// SPDX-License-Identifier: GPL-2.0
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/*
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* fs/f2fs/super.c
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*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/fs.h>
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#include <linux/statfs.h>
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#include <linux/buffer_head.h>
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#include <linux/backing-dev.h>
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#include <linux/kthread.h>
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#include <linux/parser.h>
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#include <linux/mount.h>
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#include <linux/seq_file.h>
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#include <linux/proc_fs.h>
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#include <linux/random.h>
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#include <linux/exportfs.h>
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#include <linux/blkdev.h>
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#include <linux/quotaops.h>
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#include <linux/f2fs_fs.h>
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#include <linux/sysfs.h>
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#include <linux/quota.h>
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#include <linux/unicode.h>
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#include <linux/part_stat.h>
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#include <linux/zstd.h>
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#include <linux/lz4.h>
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#include "f2fs.h"
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#include "node.h"
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#include "segment.h"
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#include "xattr.h"
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#include "gc.h"
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#define CREATE_TRACE_POINTS
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#include <trace/events/f2fs.h>
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static struct kmem_cache *f2fs_inode_cachep;
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#ifdef CONFIG_F2FS_FAULT_INJECTION
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const char *f2fs_fault_name[FAULT_MAX] = {
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[FAULT_KMALLOC] = "kmalloc",
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[FAULT_KVMALLOC] = "kvmalloc",
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[FAULT_PAGE_ALLOC] = "page alloc",
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[FAULT_PAGE_GET] = "page get",
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[FAULT_ALLOC_NID] = "alloc nid",
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[FAULT_ORPHAN] = "orphan",
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[FAULT_BLOCK] = "no more block",
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[FAULT_DIR_DEPTH] = "too big dir depth",
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[FAULT_EVICT_INODE] = "evict_inode fail",
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[FAULT_TRUNCATE] = "truncate fail",
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[FAULT_READ_IO] = "read IO error",
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[FAULT_CHECKPOINT] = "checkpoint error",
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[FAULT_DISCARD] = "discard error",
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[FAULT_WRITE_IO] = "write IO error",
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};
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void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
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unsigned int type)
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{
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struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
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if (rate) {
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atomic_set(&ffi->inject_ops, 0);
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ffi->inject_rate = rate;
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}
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if (type)
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ffi->inject_type = type;
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if (!rate && !type)
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memset(ffi, 0, sizeof(struct f2fs_fault_info));
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}
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#endif
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/* f2fs-wide shrinker description */
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static struct shrinker f2fs_shrinker_info = {
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.scan_objects = f2fs_shrink_scan,
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.count_objects = f2fs_shrink_count,
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.seeks = DEFAULT_SEEKS,
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};
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enum {
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Opt_gc_background,
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Opt_disable_roll_forward,
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Opt_norecovery,
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Opt_discard,
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Opt_nodiscard,
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Opt_noheap,
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Opt_heap,
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Opt_user_xattr,
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Opt_nouser_xattr,
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Opt_acl,
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Opt_noacl,
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Opt_active_logs,
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Opt_disable_ext_identify,
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Opt_inline_xattr,
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Opt_noinline_xattr,
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Opt_inline_xattr_size,
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Opt_inline_data,
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Opt_inline_dentry,
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Opt_noinline_dentry,
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Opt_flush_merge,
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Opt_noflush_merge,
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Opt_nobarrier,
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Opt_fastboot,
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Opt_extent_cache,
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Opt_noextent_cache,
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Opt_noinline_data,
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Opt_data_flush,
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Opt_reserve_root,
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Opt_resgid,
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Opt_resuid,
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Opt_mode,
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Opt_io_size_bits,
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Opt_fault_injection,
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Opt_fault_type,
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Opt_lazytime,
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Opt_nolazytime,
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Opt_quota,
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Opt_noquota,
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Opt_usrquota,
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Opt_grpquota,
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Opt_prjquota,
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Opt_usrjquota,
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Opt_grpjquota,
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Opt_prjjquota,
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Opt_offusrjquota,
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Opt_offgrpjquota,
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Opt_offprjjquota,
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Opt_jqfmt_vfsold,
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Opt_jqfmt_vfsv0,
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Opt_jqfmt_vfsv1,
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Opt_whint,
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Opt_alloc,
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Opt_fsync,
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Opt_test_dummy_encryption,
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Opt_inlinecrypt,
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Opt_checkpoint_disable,
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Opt_checkpoint_disable_cap,
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Opt_checkpoint_disable_cap_perc,
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Opt_checkpoint_enable,
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Opt_checkpoint_merge,
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Opt_nocheckpoint_merge,
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Opt_compress_algorithm,
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Opt_compress_log_size,
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Opt_compress_extension,
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Opt_compress_chksum,
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Opt_compress_mode,
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Opt_compress_cache,
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Opt_atgc,
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Opt_gc_merge,
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Opt_nogc_merge,
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Opt_memory_mode,
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Opt_age_extent_cache,
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Opt_err,
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};
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static match_table_t f2fs_tokens = {
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{Opt_gc_background, "background_gc=%s"},
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{Opt_disable_roll_forward, "disable_roll_forward"},
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{Opt_norecovery, "norecovery"},
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{Opt_discard, "discard"},
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{Opt_nodiscard, "nodiscard"},
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{Opt_noheap, "no_heap"},
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{Opt_heap, "heap"},
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{Opt_user_xattr, "user_xattr"},
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{Opt_nouser_xattr, "nouser_xattr"},
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{Opt_acl, "acl"},
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{Opt_noacl, "noacl"},
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{Opt_active_logs, "active_logs=%u"},
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{Opt_disable_ext_identify, "disable_ext_identify"},
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{Opt_inline_xattr, "inline_xattr"},
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{Opt_noinline_xattr, "noinline_xattr"},
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{Opt_inline_xattr_size, "inline_xattr_size=%u"},
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{Opt_inline_data, "inline_data"},
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{Opt_inline_dentry, "inline_dentry"},
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{Opt_noinline_dentry, "noinline_dentry"},
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{Opt_flush_merge, "flush_merge"},
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{Opt_noflush_merge, "noflush_merge"},
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{Opt_nobarrier, "nobarrier"},
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{Opt_fastboot, "fastboot"},
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{Opt_extent_cache, "extent_cache"},
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{Opt_noextent_cache, "noextent_cache"},
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{Opt_noinline_data, "noinline_data"},
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{Opt_data_flush, "data_flush"},
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{Opt_reserve_root, "reserve_root=%u"},
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{Opt_resgid, "resgid=%u"},
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{Opt_resuid, "resuid=%u"},
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{Opt_mode, "mode=%s"},
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{Opt_io_size_bits, "io_bits=%u"},
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{Opt_fault_injection, "fault_injection=%u"},
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{Opt_fault_type, "fault_type=%u"},
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{Opt_lazytime, "lazytime"},
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{Opt_nolazytime, "nolazytime"},
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{Opt_quota, "quota"},
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{Opt_noquota, "noquota"},
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{Opt_usrquota, "usrquota"},
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{Opt_grpquota, "grpquota"},
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{Opt_prjquota, "prjquota"},
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{Opt_usrjquota, "usrjquota=%s"},
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{Opt_grpjquota, "grpjquota=%s"},
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{Opt_prjjquota, "prjjquota=%s"},
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{Opt_offusrjquota, "usrjquota="},
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{Opt_offgrpjquota, "grpjquota="},
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{Opt_offprjjquota, "prjjquota="},
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{Opt_jqfmt_vfsold, "jqfmt=vfsold"},
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{Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
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{Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
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{Opt_whint, "whint_mode=%s"},
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{Opt_alloc, "alloc_mode=%s"},
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{Opt_fsync, "fsync_mode=%s"},
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{Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
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{Opt_test_dummy_encryption, "test_dummy_encryption"},
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{Opt_inlinecrypt, "inlinecrypt"},
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{Opt_checkpoint_disable, "checkpoint=disable"},
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{Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
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{Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
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{Opt_checkpoint_enable, "checkpoint=enable"},
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{Opt_checkpoint_merge, "checkpoint_merge"},
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{Opt_nocheckpoint_merge, "nocheckpoint_merge"},
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{Opt_compress_algorithm, "compress_algorithm=%s"},
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{Opt_compress_log_size, "compress_log_size=%u"},
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{Opt_compress_extension, "compress_extension=%s"},
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{Opt_compress_chksum, "compress_chksum"},
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{Opt_compress_mode, "compress_mode=%s"},
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{Opt_compress_cache, "compress_cache"},
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{Opt_atgc, "atgc"},
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{Opt_gc_merge, "gc_merge"},
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{Opt_nogc_merge, "nogc_merge"},
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{Opt_memory_mode, "memory=%s"},
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{Opt_age_extent_cache, "age_extent_cache"},
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{Opt_err, NULL},
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};
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void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
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{
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struct va_format vaf;
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va_list args;
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int level;
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va_start(args, fmt);
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level = printk_get_level(fmt);
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vaf.fmt = printk_skip_level(fmt);
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vaf.va = &args;
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printk("%c%cF2FS-fs (%s): %pV\n",
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KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
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va_end(args);
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}
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#ifdef CONFIG_UNICODE
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static const struct f2fs_sb_encodings {
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__u16 magic;
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char *name;
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char *version;
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} f2fs_sb_encoding_map[] = {
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{F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
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};
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static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
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const struct f2fs_sb_encodings **encoding,
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__u16 *flags)
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{
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__u16 magic = le16_to_cpu(sb->s_encoding);
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int i;
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for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
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if (magic == f2fs_sb_encoding_map[i].magic)
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break;
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if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
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return -EINVAL;
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*encoding = &f2fs_sb_encoding_map[i];
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*flags = le16_to_cpu(sb->s_encoding_flags);
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return 0;
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}
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struct kmem_cache *f2fs_cf_name_slab;
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static int __init f2fs_create_casefold_cache(void)
|
{
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f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name",
|
F2FS_NAME_LEN);
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if (!f2fs_cf_name_slab)
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return -ENOMEM;
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return 0;
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}
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static void f2fs_destroy_casefold_cache(void)
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{
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kmem_cache_destroy(f2fs_cf_name_slab);
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}
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#else
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static int __init f2fs_create_casefold_cache(void) { return 0; }
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static void f2fs_destroy_casefold_cache(void) { }
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#endif
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static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
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{
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block_t limit = min((sbi->user_block_count >> 3),
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sbi->user_block_count - sbi->reserved_blocks);
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/* limit is 12.5% */
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if (test_opt(sbi, RESERVE_ROOT) &&
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F2FS_OPTION(sbi).root_reserved_blocks > limit &&
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F2FS_OPTION(sbi).root_reserved_blocks > MIN_ROOT_RESERVED_BLOCKS) {
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F2FS_OPTION(sbi).root_reserved_blocks = limit;
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f2fs_info(sbi, "Reduce reserved blocks for root = %u",
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F2FS_OPTION(sbi).root_reserved_blocks);
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}
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if (!test_opt(sbi, RESERVE_ROOT) &&
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(!uid_eq(F2FS_OPTION(sbi).s_resuid,
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make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
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!gid_eq(F2FS_OPTION(sbi).s_resgid,
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make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
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f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
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from_kuid_munged(&init_user_ns,
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F2FS_OPTION(sbi).s_resuid),
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from_kgid_munged(&init_user_ns,
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F2FS_OPTION(sbi).s_resgid));
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}
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static inline int adjust_reserved_segment(struct f2fs_sb_info *sbi)
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{
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unsigned int sec_blks = sbi->blocks_per_seg * sbi->segs_per_sec;
|
unsigned int avg_vblocks;
|
unsigned int wanted_reserved_segments;
|
block_t avail_user_block_count;
|
|
if (!F2FS_IO_ALIGNED(sbi))
|
return 0;
|
|
/* average valid block count in section in worst case */
|
avg_vblocks = sec_blks / F2FS_IO_SIZE(sbi);
|
|
/*
|
* we need enough free space when migrating one section in worst case
|
*/
|
wanted_reserved_segments = (F2FS_IO_SIZE(sbi) / avg_vblocks) *
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reserved_segments(sbi);
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wanted_reserved_segments -= reserved_segments(sbi);
|
|
avail_user_block_count = sbi->user_block_count -
|
sbi->current_reserved_blocks -
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F2FS_OPTION(sbi).root_reserved_blocks;
|
|
if (wanted_reserved_segments * sbi->blocks_per_seg >
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avail_user_block_count) {
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f2fs_err(sbi, "IO align feature can't grab additional reserved segment: %u, available segments: %u",
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wanted_reserved_segments,
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avail_user_block_count >> sbi->log_blocks_per_seg);
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return -ENOSPC;
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}
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SM_I(sbi)->additional_reserved_segments = wanted_reserved_segments;
|
|
f2fs_info(sbi, "IO align feature needs additional reserved segment: %u",
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wanted_reserved_segments);
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return 0;
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}
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static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
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{
|
if (!F2FS_OPTION(sbi).unusable_cap_perc)
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return;
|
|
if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
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F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
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else
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F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
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F2FS_OPTION(sbi).unusable_cap_perc;
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f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
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F2FS_OPTION(sbi).unusable_cap,
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F2FS_OPTION(sbi).unusable_cap_perc);
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}
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static void init_once(void *foo)
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{
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struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
|
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inode_init_once(&fi->vfs_inode);
|
}
|
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#ifdef CONFIG_QUOTA
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static const char * const quotatypes[] = INITQFNAMES;
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#define QTYPE2NAME(t) (quotatypes[t])
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static int f2fs_set_qf_name(struct super_block *sb, int qtype,
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substring_t *args)
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{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
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char *qname;
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int ret = -EINVAL;
|
|
if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
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f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
|
return -EINVAL;
|
}
|
if (f2fs_sb_has_quota_ino(sbi)) {
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f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
|
return 0;
|
}
|
|
qname = match_strdup(args);
|
if (!qname) {
|
f2fs_err(sbi, "Not enough memory for storing quotafile name");
|
return -ENOMEM;
|
}
|
if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
|
if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
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ret = 0;
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else
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f2fs_err(sbi, "%s quota file already specified",
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QTYPE2NAME(qtype));
|
goto errout;
|
}
|
if (strchr(qname, '/')) {
|
f2fs_err(sbi, "quotafile must be on filesystem root");
|
goto errout;
|
}
|
F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
|
set_opt(sbi, QUOTA);
|
return 0;
|
errout:
|
kfree(qname);
|
return ret;
|
}
|
|
static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
|
if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
|
f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
|
return -EINVAL;
|
}
|
kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
|
F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
|
return 0;
|
}
|
|
static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
|
{
|
/*
|
* We do the test below only for project quotas. 'usrquota' and
|
* 'grpquota' mount options are allowed even without quota feature
|
* to support legacy quotas in quota files.
|
*/
|
if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
|
f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
|
return -1;
|
}
|
if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
|
F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
|
F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
|
if (test_opt(sbi, USRQUOTA) &&
|
F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
|
clear_opt(sbi, USRQUOTA);
|
|
if (test_opt(sbi, GRPQUOTA) &&
|
F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
|
clear_opt(sbi, GRPQUOTA);
|
|
if (test_opt(sbi, PRJQUOTA) &&
|
F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
|
clear_opt(sbi, PRJQUOTA);
|
|
if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
|
test_opt(sbi, PRJQUOTA)) {
|
f2fs_err(sbi, "old and new quota format mixing");
|
return -1;
|
}
|
|
if (!F2FS_OPTION(sbi).s_jquota_fmt) {
|
f2fs_err(sbi, "journaled quota format not specified");
|
return -1;
|
}
|
}
|
|
if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
|
f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
|
F2FS_OPTION(sbi).s_jquota_fmt = 0;
|
}
|
return 0;
|
}
|
#endif
|
|
static int f2fs_set_test_dummy_encryption(struct super_block *sb,
|
const char *opt,
|
const substring_t *arg,
|
bool is_remount)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
#ifdef CONFIG_FS_ENCRYPTION
|
int err;
|
|
if (!f2fs_sb_has_encrypt(sbi)) {
|
f2fs_err(sbi, "Encrypt feature is off");
|
return -EINVAL;
|
}
|
|
/*
|
* This mount option is just for testing, and it's not worthwhile to
|
* implement the extra complexity (e.g. RCU protection) that would be
|
* needed to allow it to be set or changed during remount. We do allow
|
* it to be specified during remount, but only if there is no change.
|
*/
|
if (is_remount && !F2FS_OPTION(sbi).dummy_enc_policy.policy) {
|
f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
|
return -EINVAL;
|
}
|
err = fscrypt_set_test_dummy_encryption(
|
sb, arg->from, &F2FS_OPTION(sbi).dummy_enc_policy);
|
if (err) {
|
if (err == -EEXIST)
|
f2fs_warn(sbi,
|
"Can't change test_dummy_encryption on remount");
|
else if (err == -EINVAL)
|
f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
|
opt);
|
else
|
f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
|
opt, err);
|
return -EINVAL;
|
}
|
f2fs_warn(sbi, "Test dummy encryption mode enabled");
|
#else
|
f2fs_warn(sbi, "Test dummy encryption mount option ignored");
|
#endif
|
return 0;
|
}
|
|
#ifdef CONFIG_F2FS_FS_COMPRESSION
|
#ifdef CONFIG_F2FS_FS_LZ4
|
static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str)
|
{
|
#ifdef CONFIG_F2FS_FS_LZ4HC
|
unsigned int level;
|
#endif
|
|
if (strlen(str) == 3) {
|
F2FS_OPTION(sbi).compress_level = 0;
|
return 0;
|
}
|
|
#ifdef CONFIG_F2FS_FS_LZ4HC
|
str += 3;
|
|
if (str[0] != ':') {
|
f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
|
return -EINVAL;
|
}
|
if (kstrtouint(str + 1, 10, &level))
|
return -EINVAL;
|
|
if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) {
|
f2fs_info(sbi, "invalid lz4hc compress level: %d", level);
|
return -EINVAL;
|
}
|
|
F2FS_OPTION(sbi).compress_level = level;
|
return 0;
|
#else
|
f2fs_info(sbi, "kernel doesn't support lz4hc compression");
|
return -EINVAL;
|
#endif
|
}
|
#endif
|
|
#ifdef CONFIG_F2FS_FS_ZSTD
|
static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
|
{
|
unsigned int level;
|
int len = 4;
|
|
if (strlen(str) == len) {
|
F2FS_OPTION(sbi).compress_level = 0;
|
return 0;
|
}
|
|
str += len;
|
|
if (str[0] != ':') {
|
f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
|
return -EINVAL;
|
}
|
if (kstrtouint(str + 1, 10, &level))
|
return -EINVAL;
|
|
if (!level || level > ZSTD_maxCLevel()) {
|
f2fs_info(sbi, "invalid zstd compress level: %d", level);
|
return -EINVAL;
|
}
|
|
F2FS_OPTION(sbi).compress_level = level;
|
return 0;
|
}
|
#endif
|
#endif
|
|
static int parse_options(struct super_block *sb, char *options, bool is_remount)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
substring_t args[MAX_OPT_ARGS];
|
#ifdef CONFIG_F2FS_FS_COMPRESSION
|
unsigned char (*ext)[F2FS_EXTENSION_LEN];
|
int ext_cnt;
|
#endif
|
char *p, *name;
|
int arg = 0;
|
kuid_t uid;
|
kgid_t gid;
|
int ret;
|
|
if (!options)
|
goto default_check;
|
|
while ((p = strsep(&options, ",")) != NULL) {
|
int token;
|
|
if (!*p)
|
continue;
|
/*
|
* Initialize args struct so we know whether arg was
|
* found; some options take optional arguments.
|
*/
|
args[0].to = args[0].from = NULL;
|
token = match_token(p, f2fs_tokens, args);
|
|
switch (token) {
|
case Opt_gc_background:
|
name = match_strdup(&args[0]);
|
|
if (!name)
|
return -ENOMEM;
|
if (!strcmp(name, "on")) {
|
F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
|
} else if (!strcmp(name, "off")) {
|
F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
|
} else if (!strcmp(name, "sync")) {
|
F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
|
} else {
|
kfree(name);
|
return -EINVAL;
|
}
|
kfree(name);
|
break;
|
case Opt_disable_roll_forward:
|
set_opt(sbi, DISABLE_ROLL_FORWARD);
|
break;
|
case Opt_norecovery:
|
/* this option mounts f2fs with ro */
|
set_opt(sbi, NORECOVERY);
|
if (!f2fs_readonly(sb))
|
return -EINVAL;
|
break;
|
case Opt_discard:
|
set_opt(sbi, DISCARD);
|
break;
|
case Opt_nodiscard:
|
if (f2fs_sb_has_blkzoned(sbi)) {
|
f2fs_warn(sbi, "discard is required for zoned block devices");
|
return -EINVAL;
|
}
|
clear_opt(sbi, DISCARD);
|
break;
|
case Opt_noheap:
|
set_opt(sbi, NOHEAP);
|
break;
|
case Opt_heap:
|
clear_opt(sbi, NOHEAP);
|
break;
|
#ifdef CONFIG_F2FS_FS_XATTR
|
case Opt_user_xattr:
|
set_opt(sbi, XATTR_USER);
|
break;
|
case Opt_nouser_xattr:
|
clear_opt(sbi, XATTR_USER);
|
break;
|
case Opt_inline_xattr:
|
set_opt(sbi, INLINE_XATTR);
|
break;
|
case Opt_noinline_xattr:
|
clear_opt(sbi, INLINE_XATTR);
|
break;
|
case Opt_inline_xattr_size:
|
if (args->from && match_int(args, &arg))
|
return -EINVAL;
|
set_opt(sbi, INLINE_XATTR_SIZE);
|
F2FS_OPTION(sbi).inline_xattr_size = arg;
|
break;
|
#else
|
case Opt_user_xattr:
|
f2fs_info(sbi, "user_xattr options not supported");
|
break;
|
case Opt_nouser_xattr:
|
f2fs_info(sbi, "nouser_xattr options not supported");
|
break;
|
case Opt_inline_xattr:
|
f2fs_info(sbi, "inline_xattr options not supported");
|
break;
|
case Opt_noinline_xattr:
|
f2fs_info(sbi, "noinline_xattr options not supported");
|
break;
|
#endif
|
#ifdef CONFIG_F2FS_FS_POSIX_ACL
|
case Opt_acl:
|
set_opt(sbi, POSIX_ACL);
|
break;
|
case Opt_noacl:
|
clear_opt(sbi, POSIX_ACL);
|
break;
|
#else
|
case Opt_acl:
|
f2fs_info(sbi, "acl options not supported");
|
break;
|
case Opt_noacl:
|
f2fs_info(sbi, "noacl options not supported");
|
break;
|
#endif
|
case Opt_active_logs:
|
if (args->from && match_int(args, &arg))
|
return -EINVAL;
|
if (arg != 2 && arg != 4 &&
|
arg != NR_CURSEG_PERSIST_TYPE)
|
return -EINVAL;
|
F2FS_OPTION(sbi).active_logs = arg;
|
break;
|
case Opt_disable_ext_identify:
|
set_opt(sbi, DISABLE_EXT_IDENTIFY);
|
break;
|
case Opt_inline_data:
|
set_opt(sbi, INLINE_DATA);
|
break;
|
case Opt_inline_dentry:
|
set_opt(sbi, INLINE_DENTRY);
|
break;
|
case Opt_noinline_dentry:
|
clear_opt(sbi, INLINE_DENTRY);
|
break;
|
case Opt_flush_merge:
|
set_opt(sbi, FLUSH_MERGE);
|
break;
|
case Opt_noflush_merge:
|
clear_opt(sbi, FLUSH_MERGE);
|
break;
|
case Opt_nobarrier:
|
set_opt(sbi, NOBARRIER);
|
break;
|
case Opt_fastboot:
|
set_opt(sbi, FASTBOOT);
|
break;
|
case Opt_extent_cache:
|
set_opt(sbi, READ_EXTENT_CACHE);
|
break;
|
case Opt_noextent_cache:
|
clear_opt(sbi, READ_EXTENT_CACHE);
|
break;
|
case Opt_noinline_data:
|
clear_opt(sbi, INLINE_DATA);
|
break;
|
case Opt_data_flush:
|
set_opt(sbi, DATA_FLUSH);
|
break;
|
case Opt_reserve_root:
|
if (args->from && match_int(args, &arg))
|
return -EINVAL;
|
if (test_opt(sbi, RESERVE_ROOT)) {
|
f2fs_info(sbi, "Preserve previous reserve_root=%u",
|
F2FS_OPTION(sbi).root_reserved_blocks);
|
} else {
|
F2FS_OPTION(sbi).root_reserved_blocks = arg;
|
set_opt(sbi, RESERVE_ROOT);
|
}
|
break;
|
case Opt_resuid:
|
if (args->from && match_int(args, &arg))
|
return -EINVAL;
|
uid = make_kuid(current_user_ns(), arg);
|
if (!uid_valid(uid)) {
|
f2fs_err(sbi, "Invalid uid value %d", arg);
|
return -EINVAL;
|
}
|
F2FS_OPTION(sbi).s_resuid = uid;
|
break;
|
case Opt_resgid:
|
if (args->from && match_int(args, &arg))
|
return -EINVAL;
|
gid = make_kgid(current_user_ns(), arg);
|
if (!gid_valid(gid)) {
|
f2fs_err(sbi, "Invalid gid value %d", arg);
|
return -EINVAL;
|
}
|
F2FS_OPTION(sbi).s_resgid = gid;
|
break;
|
case Opt_mode:
|
name = match_strdup(&args[0]);
|
|
if (!name)
|
return -ENOMEM;
|
if (!strcmp(name, "adaptive")) {
|
if (f2fs_sb_has_blkzoned(sbi)) {
|
f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
|
kfree(name);
|
return -EINVAL;
|
}
|
F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
|
} else if (!strcmp(name, "lfs")) {
|
F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
|
} else {
|
kfree(name);
|
return -EINVAL;
|
}
|
kfree(name);
|
break;
|
case Opt_io_size_bits:
|
if (args->from && match_int(args, &arg))
|
return -EINVAL;
|
if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
|
f2fs_warn(sbi, "Not support %d, larger than %d",
|
1 << arg, BIO_MAX_PAGES);
|
return -EINVAL;
|
}
|
F2FS_OPTION(sbi).write_io_size_bits = arg;
|
break;
|
#ifdef CONFIG_F2FS_FAULT_INJECTION
|
case Opt_fault_injection:
|
if (args->from && match_int(args, &arg))
|
return -EINVAL;
|
f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
|
set_opt(sbi, FAULT_INJECTION);
|
break;
|
|
case Opt_fault_type:
|
if (args->from && match_int(args, &arg))
|
return -EINVAL;
|
f2fs_build_fault_attr(sbi, 0, arg);
|
set_opt(sbi, FAULT_INJECTION);
|
break;
|
#else
|
case Opt_fault_injection:
|
f2fs_info(sbi, "fault_injection options not supported");
|
break;
|
|
case Opt_fault_type:
|
f2fs_info(sbi, "fault_type options not supported");
|
break;
|
#endif
|
case Opt_lazytime:
|
sb->s_flags |= SB_LAZYTIME;
|
break;
|
case Opt_nolazytime:
|
sb->s_flags &= ~SB_LAZYTIME;
|
break;
|
#ifdef CONFIG_QUOTA
|
case Opt_quota:
|
case Opt_usrquota:
|
set_opt(sbi, USRQUOTA);
|
break;
|
case Opt_grpquota:
|
set_opt(sbi, GRPQUOTA);
|
break;
|
case Opt_prjquota:
|
set_opt(sbi, PRJQUOTA);
|
break;
|
case Opt_usrjquota:
|
ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
|
if (ret)
|
return ret;
|
break;
|
case Opt_grpjquota:
|
ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
|
if (ret)
|
return ret;
|
break;
|
case Opt_prjjquota:
|
ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
|
if (ret)
|
return ret;
|
break;
|
case Opt_offusrjquota:
|
ret = f2fs_clear_qf_name(sb, USRQUOTA);
|
if (ret)
|
return ret;
|
break;
|
case Opt_offgrpjquota:
|
ret = f2fs_clear_qf_name(sb, GRPQUOTA);
|
if (ret)
|
return ret;
|
break;
|
case Opt_offprjjquota:
|
ret = f2fs_clear_qf_name(sb, PRJQUOTA);
|
if (ret)
|
return ret;
|
break;
|
case Opt_jqfmt_vfsold:
|
F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
|
break;
|
case Opt_jqfmt_vfsv0:
|
F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
|
break;
|
case Opt_jqfmt_vfsv1:
|
F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
|
break;
|
case Opt_noquota:
|
clear_opt(sbi, QUOTA);
|
clear_opt(sbi, USRQUOTA);
|
clear_opt(sbi, GRPQUOTA);
|
clear_opt(sbi, PRJQUOTA);
|
break;
|
#else
|
case Opt_quota:
|
case Opt_usrquota:
|
case Opt_grpquota:
|
case Opt_prjquota:
|
case Opt_usrjquota:
|
case Opt_grpjquota:
|
case Opt_prjjquota:
|
case Opt_offusrjquota:
|
case Opt_offgrpjquota:
|
case Opt_offprjjquota:
|
case Opt_jqfmt_vfsold:
|
case Opt_jqfmt_vfsv0:
|
case Opt_jqfmt_vfsv1:
|
case Opt_noquota:
|
f2fs_info(sbi, "quota operations not supported");
|
break;
|
#endif
|
case Opt_whint:
|
name = match_strdup(&args[0]);
|
if (!name)
|
return -ENOMEM;
|
if (!strcmp(name, "user-based")) {
|
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
|
} else if (!strcmp(name, "off")) {
|
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
|
} else if (!strcmp(name, "fs-based")) {
|
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
|
} else {
|
kfree(name);
|
return -EINVAL;
|
}
|
kfree(name);
|
break;
|
case Opt_alloc:
|
name = match_strdup(&args[0]);
|
if (!name)
|
return -ENOMEM;
|
|
if (!strcmp(name, "default")) {
|
F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
|
} else if (!strcmp(name, "reuse")) {
|
F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
|
} else {
|
kfree(name);
|
return -EINVAL;
|
}
|
kfree(name);
|
break;
|
case Opt_fsync:
|
name = match_strdup(&args[0]);
|
if (!name)
|
return -ENOMEM;
|
if (!strcmp(name, "posix")) {
|
F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
|
} else if (!strcmp(name, "strict")) {
|
F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
|
} else if (!strcmp(name, "nobarrier")) {
|
F2FS_OPTION(sbi).fsync_mode =
|
FSYNC_MODE_NOBARRIER;
|
} else {
|
kfree(name);
|
return -EINVAL;
|
}
|
kfree(name);
|
break;
|
case Opt_test_dummy_encryption:
|
ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
|
is_remount);
|
if (ret)
|
return ret;
|
break;
|
case Opt_inlinecrypt:
|
#ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
|
sb->s_flags |= SB_INLINECRYPT;
|
#else
|
f2fs_info(sbi, "inline encryption not supported");
|
#endif
|
break;
|
case Opt_checkpoint_disable_cap_perc:
|
if (args->from && match_int(args, &arg))
|
return -EINVAL;
|
if (arg < 0 || arg > 100)
|
return -EINVAL;
|
F2FS_OPTION(sbi).unusable_cap_perc = arg;
|
set_opt(sbi, DISABLE_CHECKPOINT);
|
break;
|
case Opt_checkpoint_disable_cap:
|
if (args->from && match_int(args, &arg))
|
return -EINVAL;
|
F2FS_OPTION(sbi).unusable_cap = arg;
|
set_opt(sbi, DISABLE_CHECKPOINT);
|
break;
|
case Opt_checkpoint_disable:
|
set_opt(sbi, DISABLE_CHECKPOINT);
|
break;
|
case Opt_checkpoint_enable:
|
clear_opt(sbi, DISABLE_CHECKPOINT);
|
break;
|
case Opt_checkpoint_merge:
|
set_opt(sbi, MERGE_CHECKPOINT);
|
break;
|
case Opt_nocheckpoint_merge:
|
clear_opt(sbi, MERGE_CHECKPOINT);
|
break;
|
#ifdef CONFIG_F2FS_FS_COMPRESSION
|
case Opt_compress_algorithm:
|
if (!f2fs_sb_has_compression(sbi)) {
|
f2fs_info(sbi, "Image doesn't support compression");
|
break;
|
}
|
name = match_strdup(&args[0]);
|
if (!name)
|
return -ENOMEM;
|
if (!strcmp(name, "lzo")) {
|
#ifdef CONFIG_F2FS_FS_LZO
|
F2FS_OPTION(sbi).compress_level = 0;
|
F2FS_OPTION(sbi).compress_algorithm =
|
COMPRESS_LZO;
|
#else
|
f2fs_info(sbi, "kernel doesn't support lzo compression");
|
#endif
|
} else if (!strncmp(name, "lz4", 3)) {
|
#ifdef CONFIG_F2FS_FS_LZ4
|
ret = f2fs_set_lz4hc_level(sbi, name);
|
if (ret) {
|
kfree(name);
|
return -EINVAL;
|
}
|
F2FS_OPTION(sbi).compress_algorithm =
|
COMPRESS_LZ4;
|
#else
|
f2fs_info(sbi, "kernel doesn't support lz4 compression");
|
#endif
|
} else if (!strncmp(name, "zstd", 4)) {
|
#ifdef CONFIG_F2FS_FS_ZSTD
|
ret = f2fs_set_zstd_level(sbi, name);
|
if (ret) {
|
kfree(name);
|
return -EINVAL;
|
}
|
F2FS_OPTION(sbi).compress_algorithm =
|
COMPRESS_ZSTD;
|
#else
|
f2fs_info(sbi, "kernel doesn't support zstd compression");
|
#endif
|
} else if (!strcmp(name, "lzo-rle")) {
|
#ifdef CONFIG_F2FS_FS_LZORLE
|
F2FS_OPTION(sbi).compress_level = 0;
|
F2FS_OPTION(sbi).compress_algorithm =
|
COMPRESS_LZORLE;
|
#else
|
f2fs_info(sbi, "kernel doesn't support lzorle compression");
|
#endif
|
} else {
|
kfree(name);
|
return -EINVAL;
|
}
|
kfree(name);
|
break;
|
case Opt_compress_log_size:
|
if (!f2fs_sb_has_compression(sbi)) {
|
f2fs_info(sbi, "Image doesn't support compression");
|
break;
|
}
|
if (args->from && match_int(args, &arg))
|
return -EINVAL;
|
if (arg < MIN_COMPRESS_LOG_SIZE ||
|
arg > MAX_COMPRESS_LOG_SIZE) {
|
f2fs_err(sbi,
|
"Compress cluster log size is out of range");
|
return -EINVAL;
|
}
|
F2FS_OPTION(sbi).compress_log_size = arg;
|
break;
|
case Opt_compress_extension:
|
if (!f2fs_sb_has_compression(sbi)) {
|
f2fs_info(sbi, "Image doesn't support compression");
|
break;
|
}
|
name = match_strdup(&args[0]);
|
if (!name)
|
return -ENOMEM;
|
|
ext = F2FS_OPTION(sbi).extensions;
|
ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
|
|
if (strlen(name) >= F2FS_EXTENSION_LEN ||
|
ext_cnt >= COMPRESS_EXT_NUM) {
|
f2fs_err(sbi,
|
"invalid extension length/number");
|
kfree(name);
|
return -EINVAL;
|
}
|
|
strcpy(ext[ext_cnt], name);
|
F2FS_OPTION(sbi).compress_ext_cnt++;
|
kfree(name);
|
break;
|
case Opt_compress_chksum:
|
F2FS_OPTION(sbi).compress_chksum = true;
|
break;
|
case Opt_compress_mode:
|
name = match_strdup(&args[0]);
|
if (!name)
|
return -ENOMEM;
|
if (!strcmp(name, "fs")) {
|
F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
|
} else if (!strcmp(name, "user")) {
|
F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER;
|
} else {
|
kfree(name);
|
return -EINVAL;
|
}
|
kfree(name);
|
break;
|
case Opt_compress_cache:
|
set_opt(sbi, COMPRESS_CACHE);
|
break;
|
#else
|
case Opt_compress_algorithm:
|
case Opt_compress_log_size:
|
case Opt_compress_extension:
|
case Opt_compress_chksum:
|
case Opt_compress_mode:
|
case Opt_compress_cache:
|
f2fs_info(sbi, "compression options not supported");
|
break;
|
#endif
|
case Opt_atgc:
|
set_opt(sbi, ATGC);
|
break;
|
case Opt_gc_merge:
|
set_opt(sbi, GC_MERGE);
|
break;
|
case Opt_nogc_merge:
|
clear_opt(sbi, GC_MERGE);
|
break;
|
case Opt_age_extent_cache:
|
set_opt(sbi, AGE_EXTENT_CACHE);
|
break;
|
case Opt_memory_mode:
|
name = match_strdup(&args[0]);
|
if (!name)
|
return -ENOMEM;
|
if (!strcmp(name, "normal")) {
|
F2FS_OPTION(sbi).memory_mode =
|
MEMORY_MODE_NORMAL;
|
} else if (!strcmp(name, "low")) {
|
F2FS_OPTION(sbi).memory_mode =
|
MEMORY_MODE_LOW;
|
} else {
|
kfree(name);
|
return -EINVAL;
|
}
|
kfree(name);
|
break;
|
default:
|
f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
|
p);
|
return -EINVAL;
|
}
|
}
|
default_check:
|
#ifdef CONFIG_QUOTA
|
if (f2fs_check_quota_options(sbi))
|
return -EINVAL;
|
#else
|
if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
|
f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
|
return -EINVAL;
|
}
|
if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
|
f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
|
return -EINVAL;
|
}
|
#endif
|
#ifndef CONFIG_UNICODE
|
if (f2fs_sb_has_casefold(sbi)) {
|
f2fs_err(sbi,
|
"Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
|
return -EINVAL;
|
}
|
#endif
|
/*
|
* The BLKZONED feature indicates that the drive was formatted with
|
* zone alignment optimization. This is optional for host-aware
|
* devices, but mandatory for host-managed zoned block devices.
|
*/
|
#ifndef CONFIG_BLK_DEV_ZONED
|
if (f2fs_sb_has_blkzoned(sbi)) {
|
f2fs_err(sbi, "Zoned block device support is not enabled");
|
return -EINVAL;
|
}
|
#endif
|
|
if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
|
f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
|
F2FS_IO_SIZE_KB(sbi));
|
return -EINVAL;
|
}
|
|
if (test_opt(sbi, INLINE_XATTR_SIZE)) {
|
int min_size, max_size;
|
|
if (!f2fs_sb_has_extra_attr(sbi) ||
|
!f2fs_sb_has_flexible_inline_xattr(sbi)) {
|
f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
|
return -EINVAL;
|
}
|
if (!test_opt(sbi, INLINE_XATTR)) {
|
f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
|
return -EINVAL;
|
}
|
|
min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
|
max_size = MAX_INLINE_XATTR_SIZE;
|
|
if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
|
F2FS_OPTION(sbi).inline_xattr_size > max_size) {
|
f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
|
min_size, max_size);
|
return -EINVAL;
|
}
|
}
|
|
if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
|
f2fs_err(sbi, "LFS not compatible with checkpoint=disable");
|
return -EINVAL;
|
}
|
|
/* Not pass down write hints if the number of active logs is lesser
|
* than NR_CURSEG_PERSIST_TYPE.
|
*/
|
if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_PERSIST_TYPE)
|
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
|
|
if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) {
|
f2fs_err(sbi, "Allow to mount readonly mode only");
|
return -EROFS;
|
}
|
return 0;
|
}
|
|
static struct inode *f2fs_alloc_inode(struct super_block *sb)
|
{
|
struct f2fs_inode_info *fi;
|
|
fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
|
if (!fi)
|
return NULL;
|
|
init_once((void *) fi);
|
|
/* Initialize f2fs-specific inode info */
|
atomic_set(&fi->dirty_pages, 0);
|
atomic_set(&fi->i_compr_blocks, 0);
|
init_f2fs_rwsem(&fi->i_sem);
|
spin_lock_init(&fi->i_size_lock);
|
INIT_LIST_HEAD(&fi->dirty_list);
|
INIT_LIST_HEAD(&fi->gdirty_list);
|
INIT_LIST_HEAD(&fi->inmem_ilist);
|
INIT_LIST_HEAD(&fi->inmem_pages);
|
mutex_init(&fi->inmem_lock);
|
init_f2fs_rwsem(&fi->i_gc_rwsem[READ]);
|
init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]);
|
init_f2fs_rwsem(&fi->i_mmap_sem);
|
init_f2fs_rwsem(&fi->i_xattr_sem);
|
|
/* Will be used by directory only */
|
fi->i_dir_level = F2FS_SB(sb)->dir_level;
|
|
return &fi->vfs_inode;
|
}
|
|
static int f2fs_drop_inode(struct inode *inode)
|
{
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
int ret;
|
|
/*
|
* during filesystem shutdown, if checkpoint is disabled,
|
* drop useless meta/node dirty pages.
|
*/
|
if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
|
if (inode->i_ino == F2FS_NODE_INO(sbi) ||
|
inode->i_ino == F2FS_META_INO(sbi)) {
|
trace_f2fs_drop_inode(inode, 1);
|
return 1;
|
}
|
}
|
|
/*
|
* This is to avoid a deadlock condition like below.
|
* writeback_single_inode(inode)
|
* - f2fs_write_data_page
|
* - f2fs_gc -> iput -> evict
|
* - inode_wait_for_writeback(inode)
|
*/
|
if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
|
if (!inode->i_nlink && !is_bad_inode(inode)) {
|
/* to avoid evict_inode call simultaneously */
|
atomic_inc(&inode->i_count);
|
spin_unlock(&inode->i_lock);
|
|
/* some remained atomic pages should discarded */
|
if (f2fs_is_atomic_file(inode))
|
f2fs_drop_inmem_pages(inode);
|
|
/* should remain fi->extent_tree for writepage */
|
f2fs_destroy_extent_node(inode);
|
|
sb_start_intwrite(inode->i_sb);
|
f2fs_i_size_write(inode, 0);
|
|
f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
|
inode, NULL, 0, DATA);
|
truncate_inode_pages_final(inode->i_mapping);
|
|
if (F2FS_HAS_BLOCKS(inode))
|
f2fs_truncate(inode);
|
|
sb_end_intwrite(inode->i_sb);
|
|
spin_lock(&inode->i_lock);
|
atomic_dec(&inode->i_count);
|
}
|
trace_f2fs_drop_inode(inode, 0);
|
return 0;
|
}
|
ret = generic_drop_inode(inode);
|
if (!ret)
|
ret = fscrypt_drop_inode(inode);
|
trace_f2fs_drop_inode(inode, ret);
|
return ret;
|
}
|
|
int f2fs_inode_dirtied(struct inode *inode, bool sync)
|
{
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
int ret = 0;
|
|
spin_lock(&sbi->inode_lock[DIRTY_META]);
|
if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
|
ret = 1;
|
} else {
|
set_inode_flag(inode, FI_DIRTY_INODE);
|
stat_inc_dirty_inode(sbi, DIRTY_META);
|
}
|
if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
|
list_add_tail(&F2FS_I(inode)->gdirty_list,
|
&sbi->inode_list[DIRTY_META]);
|
inc_page_count(sbi, F2FS_DIRTY_IMETA);
|
}
|
spin_unlock(&sbi->inode_lock[DIRTY_META]);
|
return ret;
|
}
|
|
void f2fs_inode_synced(struct inode *inode)
|
{
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
spin_lock(&sbi->inode_lock[DIRTY_META]);
|
if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
|
spin_unlock(&sbi->inode_lock[DIRTY_META]);
|
return;
|
}
|
if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
|
list_del_init(&F2FS_I(inode)->gdirty_list);
|
dec_page_count(sbi, F2FS_DIRTY_IMETA);
|
}
|
clear_inode_flag(inode, FI_DIRTY_INODE);
|
clear_inode_flag(inode, FI_AUTO_RECOVER);
|
stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
|
spin_unlock(&sbi->inode_lock[DIRTY_META]);
|
}
|
|
/*
|
* f2fs_dirty_inode() is called from __mark_inode_dirty()
|
*
|
* We should call set_dirty_inode to write the dirty inode through write_inode.
|
*/
|
static void f2fs_dirty_inode(struct inode *inode, int flags)
|
{
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
if (inode->i_ino == F2FS_NODE_INO(sbi) ||
|
inode->i_ino == F2FS_META_INO(sbi))
|
return;
|
|
if (flags == I_DIRTY_TIME)
|
return;
|
|
if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
|
clear_inode_flag(inode, FI_AUTO_RECOVER);
|
|
f2fs_inode_dirtied(inode, false);
|
}
|
|
static void f2fs_free_inode(struct inode *inode)
|
{
|
fscrypt_free_inode(inode);
|
kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
|
}
|
|
static void destroy_percpu_info(struct f2fs_sb_info *sbi)
|
{
|
percpu_counter_destroy(&sbi->alloc_valid_block_count);
|
percpu_counter_destroy(&sbi->total_valid_inode_count);
|
}
|
|
static void destroy_device_list(struct f2fs_sb_info *sbi)
|
{
|
int i;
|
|
for (i = 0; i < sbi->s_ndevs; i++) {
|
blkdev_put(FDEV(i).bdev, FMODE_EXCL);
|
#ifdef CONFIG_BLK_DEV_ZONED
|
kvfree(FDEV(i).blkz_seq);
|
#endif
|
}
|
kvfree(sbi->devs);
|
}
|
|
static void f2fs_put_super(struct super_block *sb)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
int i;
|
bool dropped;
|
|
/* unregister procfs/sysfs entries in advance to avoid race case */
|
f2fs_unregister_sysfs(sbi);
|
|
f2fs_quota_off_umount(sb);
|
|
/* prevent remaining shrinker jobs */
|
mutex_lock(&sbi->umount_mutex);
|
|
/*
|
* flush all issued checkpoints and stop checkpoint issue thread.
|
* after then, all checkpoints should be done by each process context.
|
*/
|
f2fs_stop_ckpt_thread(sbi);
|
|
/*
|
* We don't need to do checkpoint when superblock is clean.
|
* But, the previous checkpoint was not done by umount, it needs to do
|
* clean checkpoint again.
|
*/
|
if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
|
!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
|
struct cp_control cpc = {
|
.reason = CP_UMOUNT,
|
};
|
f2fs_write_checkpoint(sbi, &cpc);
|
}
|
|
/* be sure to wait for any on-going discard commands */
|
dropped = f2fs_issue_discard_timeout(sbi);
|
|
if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
|
!sbi->discard_blks && !dropped) {
|
struct cp_control cpc = {
|
.reason = CP_UMOUNT | CP_TRIMMED,
|
};
|
f2fs_write_checkpoint(sbi, &cpc);
|
}
|
|
/*
|
* normally superblock is clean, so we need to release this.
|
* In addition, EIO will skip do checkpoint, we need this as well.
|
*/
|
f2fs_release_ino_entry(sbi, true);
|
|
f2fs_leave_shrinker(sbi);
|
mutex_unlock(&sbi->umount_mutex);
|
|
/* our cp_error case, we can wait for any writeback page */
|
f2fs_flush_merged_writes(sbi);
|
|
f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
|
|
f2fs_bug_on(sbi, sbi->fsync_node_num);
|
|
f2fs_destroy_compress_inode(sbi);
|
|
iput(sbi->node_inode);
|
sbi->node_inode = NULL;
|
|
iput(sbi->meta_inode);
|
sbi->meta_inode = NULL;
|
|
/*
|
* iput() can update stat information, if f2fs_write_checkpoint()
|
* above failed with error.
|
*/
|
f2fs_destroy_stats(sbi);
|
|
/* destroy f2fs internal modules */
|
f2fs_destroy_node_manager(sbi);
|
f2fs_destroy_segment_manager(sbi);
|
|
f2fs_destroy_post_read_wq(sbi);
|
|
kvfree(sbi->ckpt);
|
|
sb->s_fs_info = NULL;
|
if (sbi->s_chksum_driver)
|
crypto_free_shash(sbi->s_chksum_driver);
|
kfree(sbi->raw_super);
|
|
destroy_device_list(sbi);
|
f2fs_destroy_page_array_cache(sbi);
|
f2fs_destroy_xattr_caches(sbi);
|
mempool_destroy(sbi->write_io_dummy);
|
#ifdef CONFIG_QUOTA
|
for (i = 0; i < MAXQUOTAS; i++)
|
kfree(F2FS_OPTION(sbi).s_qf_names[i]);
|
#endif
|
fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
|
destroy_percpu_info(sbi);
|
for (i = 0; i < NR_PAGE_TYPE; i++)
|
kvfree(sbi->write_io[i]);
|
#ifdef CONFIG_UNICODE
|
utf8_unload(sb->s_encoding);
|
#endif
|
kfree(sbi);
|
}
|
|
int f2fs_sync_fs(struct super_block *sb, int sync)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
int err = 0;
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
return 0;
|
if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
|
return 0;
|
|
trace_f2fs_sync_fs(sb, sync);
|
|
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
|
return -EAGAIN;
|
|
if (sync) {
|
err = f2fs_issue_checkpoint(sbi);
|
atomic_set(&sbi->no_cp_fsync_pages, 0);
|
}
|
|
return err;
|
}
|
|
static int f2fs_freeze(struct super_block *sb)
|
{
|
if (f2fs_readonly(sb))
|
return 0;
|
|
/* IO error happened before */
|
if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
|
return -EIO;
|
|
/* must be clean, since sync_filesystem() was already called */
|
if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
|
return -EINVAL;
|
|
/* Let's flush checkpoints and stop the thread. */
|
f2fs_flush_ckpt_thread(F2FS_SB(sb));
|
|
/* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */
|
set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING);
|
return 0;
|
}
|
|
static int f2fs_unfreeze(struct super_block *sb)
|
{
|
clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING);
|
return 0;
|
}
|
|
#ifdef CONFIG_QUOTA
|
static int f2fs_statfs_project(struct super_block *sb,
|
kprojid_t projid, struct kstatfs *buf)
|
{
|
struct kqid qid;
|
struct dquot *dquot;
|
u64 limit;
|
u64 curblock;
|
|
qid = make_kqid_projid(projid);
|
dquot = dqget(sb, qid);
|
if (IS_ERR(dquot))
|
return PTR_ERR(dquot);
|
spin_lock(&dquot->dq_dqb_lock);
|
|
limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
|
dquot->dq_dqb.dqb_bhardlimit);
|
if (limit)
|
limit >>= sb->s_blocksize_bits;
|
|
if (limit && buf->f_blocks > limit) {
|
curblock = (dquot->dq_dqb.dqb_curspace +
|
dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
|
buf->f_blocks = limit;
|
buf->f_bfree = buf->f_bavail =
|
(buf->f_blocks > curblock) ?
|
(buf->f_blocks - curblock) : 0;
|
}
|
|
limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
|
dquot->dq_dqb.dqb_ihardlimit);
|
|
if (limit && buf->f_files > limit) {
|
buf->f_files = limit;
|
buf->f_ffree =
|
(buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
|
(buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
|
}
|
|
spin_unlock(&dquot->dq_dqb_lock);
|
dqput(dquot);
|
return 0;
|
}
|
#endif
|
|
static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
|
{
|
struct super_block *sb = dentry->d_sb;
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
|
block_t total_count, user_block_count, start_count;
|
u64 avail_node_count;
|
|
total_count = le64_to_cpu(sbi->raw_super->block_count);
|
user_block_count = sbi->user_block_count;
|
start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
|
buf->f_type = F2FS_SUPER_MAGIC;
|
buf->f_bsize = sbi->blocksize;
|
|
/* f_blocks should not include overhead of filesystem */
|
buf->f_blocks = user_block_count;
|
buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
|
sbi->current_reserved_blocks;
|
|
spin_lock(&sbi->stat_lock);
|
if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
|
buf->f_bfree = 0;
|
else
|
buf->f_bfree -= sbi->unusable_block_count;
|
spin_unlock(&sbi->stat_lock);
|
|
if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
|
buf->f_bavail = buf->f_bfree -
|
F2FS_OPTION(sbi).root_reserved_blocks;
|
else
|
buf->f_bavail = 0;
|
|
avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
|
|
if (avail_node_count > user_block_count) {
|
buf->f_files = user_block_count;
|
buf->f_ffree = buf->f_bavail;
|
} else {
|
buf->f_files = avail_node_count;
|
buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
|
buf->f_bavail);
|
}
|
|
buf->f_namelen = F2FS_NAME_LEN;
|
buf->f_fsid = u64_to_fsid(id);
|
|
#ifdef CONFIG_QUOTA
|
if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
|
sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
|
f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
|
}
|
#endif
|
return 0;
|
}
|
|
static inline void f2fs_show_quota_options(struct seq_file *seq,
|
struct super_block *sb)
|
{
|
#ifdef CONFIG_QUOTA
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
|
if (F2FS_OPTION(sbi).s_jquota_fmt) {
|
char *fmtname = "";
|
|
switch (F2FS_OPTION(sbi).s_jquota_fmt) {
|
case QFMT_VFS_OLD:
|
fmtname = "vfsold";
|
break;
|
case QFMT_VFS_V0:
|
fmtname = "vfsv0";
|
break;
|
case QFMT_VFS_V1:
|
fmtname = "vfsv1";
|
break;
|
}
|
seq_printf(seq, ",jqfmt=%s", fmtname);
|
}
|
|
if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
|
seq_show_option(seq, "usrjquota",
|
F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
|
|
if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
|
seq_show_option(seq, "grpjquota",
|
F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
|
|
if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
|
seq_show_option(seq, "prjjquota",
|
F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
|
#endif
|
}
|
|
#ifdef CONFIG_F2FS_FS_COMPRESSION
|
static inline void f2fs_show_compress_options(struct seq_file *seq,
|
struct super_block *sb)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
char *algtype = "";
|
int i;
|
|
if (!f2fs_sb_has_compression(sbi))
|
return;
|
|
switch (F2FS_OPTION(sbi).compress_algorithm) {
|
case COMPRESS_LZO:
|
algtype = "lzo";
|
break;
|
case COMPRESS_LZ4:
|
algtype = "lz4";
|
break;
|
case COMPRESS_ZSTD:
|
algtype = "zstd";
|
break;
|
case COMPRESS_LZORLE:
|
algtype = "lzo-rle";
|
break;
|
}
|
seq_printf(seq, ",compress_algorithm=%s", algtype);
|
|
if (F2FS_OPTION(sbi).compress_level)
|
seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level);
|
|
seq_printf(seq, ",compress_log_size=%u",
|
F2FS_OPTION(sbi).compress_log_size);
|
|
for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
|
seq_printf(seq, ",compress_extension=%s",
|
F2FS_OPTION(sbi).extensions[i]);
|
}
|
|
if (F2FS_OPTION(sbi).compress_chksum)
|
seq_puts(seq, ",compress_chksum");
|
|
if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS)
|
seq_printf(seq, ",compress_mode=%s", "fs");
|
else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER)
|
seq_printf(seq, ",compress_mode=%s", "user");
|
|
if (test_opt(sbi, COMPRESS_CACHE))
|
seq_puts(seq, ",compress_cache");
|
}
|
#endif
|
|
static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
|
|
if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
|
seq_printf(seq, ",background_gc=%s", "sync");
|
else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
|
seq_printf(seq, ",background_gc=%s", "on");
|
else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
|
seq_printf(seq, ",background_gc=%s", "off");
|
|
if (test_opt(sbi, GC_MERGE))
|
seq_puts(seq, ",gc_merge");
|
|
if (test_opt(sbi, DISABLE_ROLL_FORWARD))
|
seq_puts(seq, ",disable_roll_forward");
|
if (test_opt(sbi, NORECOVERY))
|
seq_puts(seq, ",norecovery");
|
if (test_opt(sbi, DISCARD))
|
seq_puts(seq, ",discard");
|
else
|
seq_puts(seq, ",nodiscard");
|
if (test_opt(sbi, NOHEAP))
|
seq_puts(seq, ",no_heap");
|
else
|
seq_puts(seq, ",heap");
|
#ifdef CONFIG_F2FS_FS_XATTR
|
if (test_opt(sbi, XATTR_USER))
|
seq_puts(seq, ",user_xattr");
|
else
|
seq_puts(seq, ",nouser_xattr");
|
if (test_opt(sbi, INLINE_XATTR))
|
seq_puts(seq, ",inline_xattr");
|
else
|
seq_puts(seq, ",noinline_xattr");
|
if (test_opt(sbi, INLINE_XATTR_SIZE))
|
seq_printf(seq, ",inline_xattr_size=%u",
|
F2FS_OPTION(sbi).inline_xattr_size);
|
#endif
|
#ifdef CONFIG_F2FS_FS_POSIX_ACL
|
if (test_opt(sbi, POSIX_ACL))
|
seq_puts(seq, ",acl");
|
else
|
seq_puts(seq, ",noacl");
|
#endif
|
if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
|
seq_puts(seq, ",disable_ext_identify");
|
if (test_opt(sbi, INLINE_DATA))
|
seq_puts(seq, ",inline_data");
|
else
|
seq_puts(seq, ",noinline_data");
|
if (test_opt(sbi, INLINE_DENTRY))
|
seq_puts(seq, ",inline_dentry");
|
else
|
seq_puts(seq, ",noinline_dentry");
|
if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
|
seq_puts(seq, ",flush_merge");
|
if (test_opt(sbi, NOBARRIER))
|
seq_puts(seq, ",nobarrier");
|
if (test_opt(sbi, FASTBOOT))
|
seq_puts(seq, ",fastboot");
|
if (test_opt(sbi, READ_EXTENT_CACHE))
|
seq_puts(seq, ",extent_cache");
|
else
|
seq_puts(seq, ",noextent_cache");
|
if (test_opt(sbi, AGE_EXTENT_CACHE))
|
seq_puts(seq, ",age_extent_cache");
|
if (test_opt(sbi, DATA_FLUSH))
|
seq_puts(seq, ",data_flush");
|
|
seq_puts(seq, ",mode=");
|
if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
|
seq_puts(seq, "adaptive");
|
else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
|
seq_puts(seq, "lfs");
|
seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
|
if (test_opt(sbi, RESERVE_ROOT))
|
seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
|
F2FS_OPTION(sbi).root_reserved_blocks,
|
from_kuid_munged(&init_user_ns,
|
F2FS_OPTION(sbi).s_resuid),
|
from_kgid_munged(&init_user_ns,
|
F2FS_OPTION(sbi).s_resgid));
|
if (F2FS_IO_SIZE_BITS(sbi))
|
seq_printf(seq, ",io_bits=%u",
|
F2FS_OPTION(sbi).write_io_size_bits);
|
#ifdef CONFIG_F2FS_FAULT_INJECTION
|
if (test_opt(sbi, FAULT_INJECTION)) {
|
seq_printf(seq, ",fault_injection=%u",
|
F2FS_OPTION(sbi).fault_info.inject_rate);
|
seq_printf(seq, ",fault_type=%u",
|
F2FS_OPTION(sbi).fault_info.inject_type);
|
}
|
#endif
|
#ifdef CONFIG_QUOTA
|
if (test_opt(sbi, QUOTA))
|
seq_puts(seq, ",quota");
|
if (test_opt(sbi, USRQUOTA))
|
seq_puts(seq, ",usrquota");
|
if (test_opt(sbi, GRPQUOTA))
|
seq_puts(seq, ",grpquota");
|
if (test_opt(sbi, PRJQUOTA))
|
seq_puts(seq, ",prjquota");
|
#endif
|
f2fs_show_quota_options(seq, sbi->sb);
|
if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
|
seq_printf(seq, ",whint_mode=%s", "user-based");
|
else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
|
seq_printf(seq, ",whint_mode=%s", "fs-based");
|
|
fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
|
|
if (sbi->sb->s_flags & SB_INLINECRYPT)
|
seq_puts(seq, ",inlinecrypt");
|
|
if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
|
seq_printf(seq, ",alloc_mode=%s", "default");
|
else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
|
seq_printf(seq, ",alloc_mode=%s", "reuse");
|
|
if (test_opt(sbi, DISABLE_CHECKPOINT))
|
seq_printf(seq, ",checkpoint=disable:%u",
|
F2FS_OPTION(sbi).unusable_cap);
|
if (test_opt(sbi, MERGE_CHECKPOINT))
|
seq_puts(seq, ",checkpoint_merge");
|
else
|
seq_puts(seq, ",nocheckpoint_merge");
|
if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
|
seq_printf(seq, ",fsync_mode=%s", "posix");
|
else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
|
seq_printf(seq, ",fsync_mode=%s", "strict");
|
else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
|
seq_printf(seq, ",fsync_mode=%s", "nobarrier");
|
|
#ifdef CONFIG_F2FS_FS_COMPRESSION
|
f2fs_show_compress_options(seq, sbi->sb);
|
#endif
|
|
if (test_opt(sbi, ATGC))
|
seq_puts(seq, ",atgc");
|
|
if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL)
|
seq_printf(seq, ",memory=%s", "normal");
|
else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW)
|
seq_printf(seq, ",memory=%s", "low");
|
|
return 0;
|
}
|
|
static void default_options(struct f2fs_sb_info *sbi, bool remount)
|
{
|
/* init some FS parameters */
|
if (!remount) {
|
set_opt(sbi, READ_EXTENT_CACHE);
|
clear_opt(sbi, DISABLE_CHECKPOINT);
|
|
if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi))
|
set_opt(sbi, DISCARD);
|
}
|
|
if (f2fs_sb_has_readonly(sbi))
|
F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE;
|
else
|
F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
|
|
F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
|
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
|
F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
|
F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
|
F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
|
F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
|
F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
|
F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
|
F2FS_OPTION(sbi).compress_ext_cnt = 0;
|
F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
|
F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
|
F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL;
|
|
sbi->sb->s_flags &= ~SB_INLINECRYPT;
|
|
set_opt(sbi, INLINE_XATTR);
|
set_opt(sbi, INLINE_DATA);
|
set_opt(sbi, INLINE_DENTRY);
|
set_opt(sbi, NOHEAP);
|
set_opt(sbi, MERGE_CHECKPOINT);
|
F2FS_OPTION(sbi).unusable_cap = 0;
|
sbi->sb->s_flags |= SB_LAZYTIME;
|
set_opt(sbi, FLUSH_MERGE);
|
if (f2fs_sb_has_blkzoned(sbi))
|
F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
|
else
|
F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
|
|
#ifdef CONFIG_F2FS_FS_XATTR
|
set_opt(sbi, XATTR_USER);
|
#endif
|
#ifdef CONFIG_F2FS_FS_POSIX_ACL
|
set_opt(sbi, POSIX_ACL);
|
#endif
|
|
f2fs_build_fault_attr(sbi, 0, 0);
|
}
|
|
#ifdef CONFIG_QUOTA
|
static int f2fs_enable_quotas(struct super_block *sb);
|
#endif
|
|
static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
|
{
|
unsigned int s_flags = sbi->sb->s_flags;
|
struct cp_control cpc;
|
int err = 0;
|
int ret;
|
block_t unusable;
|
|
if (s_flags & SB_RDONLY) {
|
f2fs_err(sbi, "checkpoint=disable on readonly fs");
|
return -EINVAL;
|
}
|
sbi->sb->s_flags |= SB_ACTIVE;
|
|
/* check if we need more GC first */
|
unusable = f2fs_get_unusable_blocks(sbi);
|
if (!f2fs_disable_cp_again(sbi, unusable))
|
goto skip_gc;
|
|
f2fs_update_time(sbi, DISABLE_TIME);
|
|
while (!f2fs_time_over(sbi, DISABLE_TIME)) {
|
f2fs_down_write(&sbi->gc_lock);
|
err = f2fs_gc(sbi, true, false, false, NULL_SEGNO);
|
if (err == -ENODATA) {
|
err = 0;
|
break;
|
}
|
if (err && err != -EAGAIN)
|
break;
|
}
|
|
ret = sync_filesystem(sbi->sb);
|
if (ret || err) {
|
err = ret ? ret : err;
|
goto restore_flag;
|
}
|
|
unusable = f2fs_get_unusable_blocks(sbi);
|
if (f2fs_disable_cp_again(sbi, unusable)) {
|
err = -EAGAIN;
|
goto restore_flag;
|
}
|
|
skip_gc:
|
f2fs_down_write(&sbi->gc_lock);
|
cpc.reason = CP_PAUSE;
|
set_sbi_flag(sbi, SBI_CP_DISABLED);
|
err = f2fs_write_checkpoint(sbi, &cpc);
|
if (err)
|
goto out_unlock;
|
|
spin_lock(&sbi->stat_lock);
|
sbi->unusable_block_count = unusable;
|
spin_unlock(&sbi->stat_lock);
|
|
out_unlock:
|
f2fs_up_write(&sbi->gc_lock);
|
restore_flag:
|
sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
|
return err;
|
}
|
|
static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
|
{
|
int retry = DEFAULT_RETRY_IO_COUNT;
|
|
/* we should flush all the data to keep data consistency */
|
do {
|
sync_inodes_sb(sbi->sb);
|
cond_resched();
|
congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
|
} while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--);
|
|
if (unlikely(retry < 0))
|
f2fs_warn(sbi, "checkpoint=enable has some unwritten data.");
|
|
f2fs_down_write(&sbi->gc_lock);
|
f2fs_dirty_to_prefree(sbi);
|
|
clear_sbi_flag(sbi, SBI_CP_DISABLED);
|
set_sbi_flag(sbi, SBI_IS_DIRTY);
|
f2fs_up_write(&sbi->gc_lock);
|
|
f2fs_sync_fs(sbi->sb, 1);
|
|
/* Let's ensure there's no pending checkpoint anymore */
|
f2fs_flush_ckpt_thread(sbi);
|
}
|
|
static int f2fs_remount(struct super_block *sb, int *flags, char *data)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
struct f2fs_mount_info org_mount_opt;
|
unsigned long old_sb_flags;
|
int err;
|
bool need_restart_gc = false, need_stop_gc = false;
|
bool need_restart_ckpt = false, need_stop_ckpt = false;
|
bool need_restart_flush = false, need_stop_flush = false;
|
bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE);
|
bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE);
|
bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
|
bool no_io_align = !F2FS_IO_ALIGNED(sbi);
|
bool no_atgc = !test_opt(sbi, ATGC);
|
bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE);
|
bool checkpoint_changed;
|
#ifdef CONFIG_QUOTA
|
int i, j;
|
#endif
|
|
/*
|
* Save the old mount options in case we
|
* need to restore them.
|
*/
|
org_mount_opt = sbi->mount_opt;
|
old_sb_flags = sb->s_flags;
|
|
#ifdef CONFIG_QUOTA
|
org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
|
for (i = 0; i < MAXQUOTAS; i++) {
|
if (F2FS_OPTION(sbi).s_qf_names[i]) {
|
org_mount_opt.s_qf_names[i] =
|
kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
|
GFP_KERNEL);
|
if (!org_mount_opt.s_qf_names[i]) {
|
for (j = 0; j < i; j++)
|
kfree(org_mount_opt.s_qf_names[j]);
|
return -ENOMEM;
|
}
|
} else {
|
org_mount_opt.s_qf_names[i] = NULL;
|
}
|
}
|
#endif
|
|
/* recover superblocks we couldn't write due to previous RO mount */
|
if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
|
err = f2fs_commit_super(sbi, false);
|
f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
|
err);
|
if (!err)
|
clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
|
}
|
|
default_options(sbi, true);
|
|
/* parse mount options */
|
err = parse_options(sb, data, true);
|
if (err)
|
goto restore_opts;
|
checkpoint_changed =
|
disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
|
|
/*
|
* Previous and new state of filesystem is RO,
|
* so skip checking GC and FLUSH_MERGE conditions.
|
*/
|
if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
|
goto skip;
|
|
if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) {
|
err = -EROFS;
|
goto restore_opts;
|
}
|
|
#ifdef CONFIG_QUOTA
|
if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
|
err = dquot_suspend(sb, -1);
|
if (err < 0)
|
goto restore_opts;
|
} else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
|
/* dquot_resume needs RW */
|
sb->s_flags &= ~SB_RDONLY;
|
if (sb_any_quota_suspended(sb)) {
|
dquot_resume(sb, -1);
|
} else if (f2fs_sb_has_quota_ino(sbi)) {
|
err = f2fs_enable_quotas(sb);
|
if (err)
|
goto restore_opts;
|
}
|
}
|
#endif
|
/* disallow enable atgc dynamically */
|
if (no_atgc == !!test_opt(sbi, ATGC)) {
|
err = -EINVAL;
|
f2fs_warn(sbi, "switch atgc option is not allowed");
|
goto restore_opts;
|
}
|
|
/* disallow enable/disable extent_cache dynamically */
|
if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) {
|
err = -EINVAL;
|
f2fs_warn(sbi, "switch extent_cache option is not allowed");
|
goto restore_opts;
|
}
|
/* disallow enable/disable age extent_cache dynamically */
|
if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) {
|
err = -EINVAL;
|
f2fs_warn(sbi, "switch age_extent_cache option is not allowed");
|
goto restore_opts;
|
}
|
|
if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
|
err = -EINVAL;
|
f2fs_warn(sbi, "switch io_bits option is not allowed");
|
goto restore_opts;
|
}
|
|
if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) {
|
err = -EINVAL;
|
f2fs_warn(sbi, "switch compress_cache option is not allowed");
|
goto restore_opts;
|
}
|
|
if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
|
err = -EINVAL;
|
f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
|
goto restore_opts;
|
}
|
|
/*
|
* We stop the GC thread if FS is mounted as RO
|
* or if background_gc = off is passed in mount
|
* option. Also sync the filesystem.
|
*/
|
if ((*flags & SB_RDONLY) ||
|
(F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF &&
|
!test_opt(sbi, GC_MERGE))) {
|
if (sbi->gc_thread) {
|
f2fs_stop_gc_thread(sbi);
|
need_restart_gc = true;
|
}
|
} else if (!sbi->gc_thread) {
|
err = f2fs_start_gc_thread(sbi);
|
if (err)
|
goto restore_opts;
|
need_stop_gc = true;
|
}
|
|
if (*flags & SB_RDONLY ||
|
F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
|
sync_inodes_sb(sb);
|
|
set_sbi_flag(sbi, SBI_IS_DIRTY);
|
set_sbi_flag(sbi, SBI_IS_CLOSE);
|
f2fs_sync_fs(sb, 1);
|
clear_sbi_flag(sbi, SBI_IS_CLOSE);
|
}
|
|
if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
|
!test_opt(sbi, MERGE_CHECKPOINT)) {
|
f2fs_stop_ckpt_thread(sbi);
|
need_restart_ckpt = true;
|
} else {
|
/* Flush if the prevous checkpoint, if exists. */
|
f2fs_flush_ckpt_thread(sbi);
|
|
err = f2fs_start_ckpt_thread(sbi);
|
if (err) {
|
f2fs_err(sbi,
|
"Failed to start F2FS issue_checkpoint_thread (%d)",
|
err);
|
goto restore_gc;
|
}
|
need_stop_ckpt = true;
|
}
|
|
/*
|
* We stop issue flush thread if FS is mounted as RO
|
* or if flush_merge is not passed in mount option.
|
*/
|
if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
|
clear_opt(sbi, FLUSH_MERGE);
|
f2fs_destroy_flush_cmd_control(sbi, false);
|
need_restart_flush = true;
|
} else {
|
err = f2fs_create_flush_cmd_control(sbi);
|
if (err)
|
goto restore_ckpt;
|
need_stop_flush = true;
|
}
|
|
if (checkpoint_changed) {
|
if (test_opt(sbi, DISABLE_CHECKPOINT)) {
|
err = f2fs_disable_checkpoint(sbi);
|
if (err)
|
goto restore_flush;
|
} else {
|
f2fs_enable_checkpoint(sbi);
|
}
|
}
|
|
skip:
|
#ifdef CONFIG_QUOTA
|
/* Release old quota file names */
|
for (i = 0; i < MAXQUOTAS; i++)
|
kfree(org_mount_opt.s_qf_names[i]);
|
#endif
|
/* Update the POSIXACL Flag */
|
sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
|
(test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
|
|
limit_reserve_root(sbi);
|
adjust_unusable_cap_perc(sbi);
|
*flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
|
return 0;
|
restore_flush:
|
if (need_restart_flush) {
|
if (f2fs_create_flush_cmd_control(sbi))
|
f2fs_warn(sbi, "background flush thread has stopped");
|
} else if (need_stop_flush) {
|
clear_opt(sbi, FLUSH_MERGE);
|
f2fs_destroy_flush_cmd_control(sbi, false);
|
}
|
restore_ckpt:
|
if (need_restart_ckpt) {
|
if (f2fs_start_ckpt_thread(sbi))
|
f2fs_warn(sbi, "background ckpt thread has stopped");
|
} else if (need_stop_ckpt) {
|
f2fs_stop_ckpt_thread(sbi);
|
}
|
restore_gc:
|
if (need_restart_gc) {
|
if (f2fs_start_gc_thread(sbi))
|
f2fs_warn(sbi, "background gc thread has stopped");
|
} else if (need_stop_gc) {
|
f2fs_stop_gc_thread(sbi);
|
}
|
restore_opts:
|
#ifdef CONFIG_QUOTA
|
F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
|
for (i = 0; i < MAXQUOTAS; i++) {
|
kfree(F2FS_OPTION(sbi).s_qf_names[i]);
|
F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
|
}
|
#endif
|
sbi->mount_opt = org_mount_opt;
|
sb->s_flags = old_sb_flags;
|
return err;
|
}
|
|
#ifdef CONFIG_QUOTA
|
/* Read data from quotafile */
|
static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
|
size_t len, loff_t off)
|
{
|
struct inode *inode = sb_dqopt(sb)->files[type];
|
struct address_space *mapping = inode->i_mapping;
|
block_t blkidx = F2FS_BYTES_TO_BLK(off);
|
int offset = off & (sb->s_blocksize - 1);
|
int tocopy;
|
size_t toread;
|
loff_t i_size = i_size_read(inode);
|
struct page *page;
|
|
if (off > i_size)
|
return 0;
|
|
if (off + len > i_size)
|
len = i_size - off;
|
toread = len;
|
while (toread > 0) {
|
tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
|
repeat:
|
page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
|
if (IS_ERR(page)) {
|
if (PTR_ERR(page) == -ENOMEM) {
|
congestion_wait(BLK_RW_ASYNC,
|
DEFAULT_IO_TIMEOUT);
|
goto repeat;
|
}
|
set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
|
return PTR_ERR(page);
|
}
|
|
lock_page(page);
|
|
if (unlikely(page->mapping != mapping)) {
|
f2fs_put_page(page, 1);
|
goto repeat;
|
}
|
if (unlikely(!PageUptodate(page))) {
|
f2fs_put_page(page, 1);
|
set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
|
return -EIO;
|
}
|
|
memcpy_from_page(data, page, offset, tocopy);
|
f2fs_put_page(page, 1);
|
|
offset = 0;
|
toread -= tocopy;
|
data += tocopy;
|
blkidx++;
|
}
|
return len;
|
}
|
|
/* Write to quotafile */
|
static ssize_t f2fs_quota_write(struct super_block *sb, int type,
|
const char *data, size_t len, loff_t off)
|
{
|
struct inode *inode = sb_dqopt(sb)->files[type];
|
struct address_space *mapping = inode->i_mapping;
|
const struct address_space_operations *a_ops = mapping->a_ops;
|
int offset = off & (sb->s_blocksize - 1);
|
size_t towrite = len;
|
struct page *page;
|
void *fsdata = NULL;
|
int err = 0;
|
int tocopy;
|
|
while (towrite > 0) {
|
tocopy = min_t(unsigned long, sb->s_blocksize - offset,
|
towrite);
|
retry:
|
err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
|
&page, &fsdata);
|
if (unlikely(err)) {
|
if (err == -ENOMEM) {
|
congestion_wait(BLK_RW_ASYNC,
|
DEFAULT_IO_TIMEOUT);
|
goto retry;
|
}
|
set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
|
break;
|
}
|
|
memcpy_to_page(page, offset, data, tocopy);
|
|
a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
|
page, fsdata);
|
offset = 0;
|
towrite -= tocopy;
|
off += tocopy;
|
data += tocopy;
|
cond_resched();
|
}
|
|
if (len == towrite)
|
return err;
|
inode->i_mtime = inode->i_ctime = current_time(inode);
|
f2fs_mark_inode_dirty_sync(inode, false);
|
return len - towrite;
|
}
|
|
static struct dquot **f2fs_get_dquots(struct inode *inode)
|
{
|
return F2FS_I(inode)->i_dquot;
|
}
|
|
static qsize_t *f2fs_get_reserved_space(struct inode *inode)
|
{
|
return &F2FS_I(inode)->i_reserved_quota;
|
}
|
|
static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
|
{
|
if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
|
f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
|
return 0;
|
}
|
|
return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
|
F2FS_OPTION(sbi).s_jquota_fmt, type);
|
}
|
|
int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
|
{
|
int enabled = 0;
|
int i, err;
|
|
if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
|
err = f2fs_enable_quotas(sbi->sb);
|
if (err) {
|
f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
|
return 0;
|
}
|
return 1;
|
}
|
|
for (i = 0; i < MAXQUOTAS; i++) {
|
if (F2FS_OPTION(sbi).s_qf_names[i]) {
|
err = f2fs_quota_on_mount(sbi, i);
|
if (!err) {
|
enabled = 1;
|
continue;
|
}
|
f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
|
err, i);
|
}
|
}
|
return enabled;
|
}
|
|
static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
|
unsigned int flags)
|
{
|
struct inode *qf_inode;
|
unsigned long qf_inum;
|
int err;
|
|
BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
|
|
qf_inum = f2fs_qf_ino(sb, type);
|
if (!qf_inum)
|
return -EPERM;
|
|
qf_inode = f2fs_iget(sb, qf_inum);
|
if (IS_ERR(qf_inode)) {
|
f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
|
return PTR_ERR(qf_inode);
|
}
|
|
/* Don't account quota for quota files to avoid recursion */
|
qf_inode->i_flags |= S_NOQUOTA;
|
err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
|
iput(qf_inode);
|
return err;
|
}
|
|
static int f2fs_enable_quotas(struct super_block *sb)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
int type, err = 0;
|
unsigned long qf_inum;
|
bool quota_mopt[MAXQUOTAS] = {
|
test_opt(sbi, USRQUOTA),
|
test_opt(sbi, GRPQUOTA),
|
test_opt(sbi, PRJQUOTA),
|
};
|
|
if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
|
f2fs_err(sbi, "quota file may be corrupted, skip loading it");
|
return 0;
|
}
|
|
sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
|
|
for (type = 0; type < MAXQUOTAS; type++) {
|
qf_inum = f2fs_qf_ino(sb, type);
|
if (qf_inum) {
|
err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
|
DQUOT_USAGE_ENABLED |
|
(quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
|
if (err) {
|
f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
|
type, err);
|
for (type--; type >= 0; type--)
|
dquot_quota_off(sb, type);
|
set_sbi_flag(F2FS_SB(sb),
|
SBI_QUOTA_NEED_REPAIR);
|
return err;
|
}
|
}
|
}
|
return 0;
|
}
|
|
static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type)
|
{
|
struct quota_info *dqopt = sb_dqopt(sbi->sb);
|
struct address_space *mapping = dqopt->files[type]->i_mapping;
|
int ret = 0;
|
|
ret = dquot_writeback_dquots(sbi->sb, type);
|
if (ret)
|
goto out;
|
|
ret = filemap_fdatawrite(mapping);
|
if (ret)
|
goto out;
|
|
/* if we are using journalled quota */
|
if (is_journalled_quota(sbi))
|
goto out;
|
|
ret = filemap_fdatawait(mapping);
|
|
truncate_inode_pages(&dqopt->files[type]->i_data, 0);
|
out:
|
if (ret)
|
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
|
return ret;
|
}
|
|
int f2fs_quota_sync(struct super_block *sb, int type)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
struct quota_info *dqopt = sb_dqopt(sb);
|
int cnt;
|
int ret = 0;
|
|
/*
|
* Now when everything is written we can discard the pagecache so
|
* that userspace sees the changes.
|
*/
|
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
|
|
if (type != -1 && cnt != type)
|
continue;
|
|
if (!sb_has_quota_active(sb, cnt))
|
continue;
|
|
if (!f2fs_sb_has_quota_ino(sbi))
|
inode_lock(dqopt->files[cnt]);
|
|
/*
|
* do_quotactl
|
* f2fs_quota_sync
|
* f2fs_down_read(quota_sem)
|
* dquot_writeback_dquots()
|
* f2fs_dquot_commit
|
* block_operation
|
* f2fs_down_read(quota_sem)
|
*/
|
f2fs_lock_op(sbi);
|
f2fs_down_read(&sbi->quota_sem);
|
|
ret = f2fs_quota_sync_file(sbi, cnt);
|
|
f2fs_up_read(&sbi->quota_sem);
|
f2fs_unlock_op(sbi);
|
|
if (!f2fs_sb_has_quota_ino(sbi))
|
inode_unlock(dqopt->files[cnt]);
|
|
if (ret)
|
break;
|
}
|
return ret;
|
}
|
|
static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
|
const struct path *path)
|
{
|
struct inode *inode;
|
int err;
|
|
/* if quota sysfile exists, deny enabling quota with specific file */
|
if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
|
f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
|
return -EBUSY;
|
}
|
|
err = f2fs_quota_sync(sb, type);
|
if (err)
|
return err;
|
|
err = dquot_quota_on(sb, type, format_id, path);
|
if (err)
|
return err;
|
|
inode = d_inode(path->dentry);
|
|
inode_lock(inode);
|
F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
|
f2fs_set_inode_flags(inode);
|
inode_unlock(inode);
|
f2fs_mark_inode_dirty_sync(inode, false);
|
|
return 0;
|
}
|
|
static int __f2fs_quota_off(struct super_block *sb, int type)
|
{
|
struct inode *inode = sb_dqopt(sb)->files[type];
|
int err;
|
|
if (!inode || !igrab(inode))
|
return dquot_quota_off(sb, type);
|
|
err = f2fs_quota_sync(sb, type);
|
if (err)
|
goto out_put;
|
|
err = dquot_quota_off(sb, type);
|
if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
|
goto out_put;
|
|
inode_lock(inode);
|
F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
|
f2fs_set_inode_flags(inode);
|
inode_unlock(inode);
|
f2fs_mark_inode_dirty_sync(inode, false);
|
out_put:
|
iput(inode);
|
return err;
|
}
|
|
static int f2fs_quota_off(struct super_block *sb, int type)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
int err;
|
|
err = __f2fs_quota_off(sb, type);
|
|
/*
|
* quotactl can shutdown journalled quota, result in inconsistence
|
* between quota record and fs data by following updates, tag the
|
* flag to let fsck be aware of it.
|
*/
|
if (is_journalled_quota(sbi))
|
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
|
return err;
|
}
|
|
void f2fs_quota_off_umount(struct super_block *sb)
|
{
|
int type;
|
int err;
|
|
for (type = 0; type < MAXQUOTAS; type++) {
|
err = __f2fs_quota_off(sb, type);
|
if (err) {
|
int ret = dquot_quota_off(sb, type);
|
|
f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
|
type, err, ret);
|
set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
|
}
|
}
|
/*
|
* In case of checkpoint=disable, we must flush quota blocks.
|
* This can cause NULL exception for node_inode in end_io, since
|
* put_super already dropped it.
|
*/
|
sync_filesystem(sb);
|
}
|
|
static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
|
{
|
struct quota_info *dqopt = sb_dqopt(sb);
|
int type;
|
|
for (type = 0; type < MAXQUOTAS; type++) {
|
if (!dqopt->files[type])
|
continue;
|
f2fs_inode_synced(dqopt->files[type]);
|
}
|
}
|
|
static int f2fs_dquot_commit(struct dquot *dquot)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
|
int ret;
|
|
f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
|
ret = dquot_commit(dquot);
|
if (ret < 0)
|
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
|
f2fs_up_read(&sbi->quota_sem);
|
return ret;
|
}
|
|
static int f2fs_dquot_acquire(struct dquot *dquot)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
|
int ret;
|
|
f2fs_down_read(&sbi->quota_sem);
|
ret = dquot_acquire(dquot);
|
if (ret < 0)
|
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
|
f2fs_up_read(&sbi->quota_sem);
|
return ret;
|
}
|
|
static int f2fs_dquot_release(struct dquot *dquot)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
|
int ret = dquot_release(dquot);
|
|
if (ret < 0)
|
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
|
return ret;
|
}
|
|
static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
|
{
|
struct super_block *sb = dquot->dq_sb;
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
int ret = dquot_mark_dquot_dirty(dquot);
|
|
/* if we are using journalled quota */
|
if (is_journalled_quota(sbi))
|
set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
|
|
return ret;
|
}
|
|
static int f2fs_dquot_commit_info(struct super_block *sb, int type)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
int ret = dquot_commit_info(sb, type);
|
|
if (ret < 0)
|
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
|
return ret;
|
}
|
|
static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
|
{
|
*projid = F2FS_I(inode)->i_projid;
|
return 0;
|
}
|
|
static const struct dquot_operations f2fs_quota_operations = {
|
.get_reserved_space = f2fs_get_reserved_space,
|
.write_dquot = f2fs_dquot_commit,
|
.acquire_dquot = f2fs_dquot_acquire,
|
.release_dquot = f2fs_dquot_release,
|
.mark_dirty = f2fs_dquot_mark_dquot_dirty,
|
.write_info = f2fs_dquot_commit_info,
|
.alloc_dquot = dquot_alloc,
|
.destroy_dquot = dquot_destroy,
|
.get_projid = f2fs_get_projid,
|
.get_next_id = dquot_get_next_id,
|
};
|
|
static const struct quotactl_ops f2fs_quotactl_ops = {
|
.quota_on = f2fs_quota_on,
|
.quota_off = f2fs_quota_off,
|
.quota_sync = f2fs_quota_sync,
|
.get_state = dquot_get_state,
|
.set_info = dquot_set_dqinfo,
|
.get_dqblk = dquot_get_dqblk,
|
.set_dqblk = dquot_set_dqblk,
|
.get_nextdqblk = dquot_get_next_dqblk,
|
};
|
#else
|
int f2fs_quota_sync(struct super_block *sb, int type)
|
{
|
return 0;
|
}
|
|
void f2fs_quota_off_umount(struct super_block *sb)
|
{
|
}
|
#endif
|
|
static const struct super_operations f2fs_sops = {
|
.alloc_inode = f2fs_alloc_inode,
|
.free_inode = f2fs_free_inode,
|
.drop_inode = f2fs_drop_inode,
|
.write_inode = f2fs_write_inode,
|
.dirty_inode = f2fs_dirty_inode,
|
.show_options = f2fs_show_options,
|
#ifdef CONFIG_QUOTA
|
.quota_read = f2fs_quota_read,
|
.quota_write = f2fs_quota_write,
|
.get_dquots = f2fs_get_dquots,
|
#endif
|
.evict_inode = f2fs_evict_inode,
|
.put_super = f2fs_put_super,
|
.sync_fs = f2fs_sync_fs,
|
.freeze_fs = f2fs_freeze,
|
.unfreeze_fs = f2fs_unfreeze,
|
.statfs = f2fs_statfs,
|
.remount_fs = f2fs_remount,
|
};
|
|
#ifdef CONFIG_FS_ENCRYPTION
|
static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
|
{
|
return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
|
F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
|
ctx, len, NULL);
|
}
|
|
static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
|
void *fs_data)
|
{
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
/*
|
* Encrypting the root directory is not allowed because fsck
|
* expects lost+found directory to exist and remain unencrypted
|
* if LOST_FOUND feature is enabled.
|
*
|
*/
|
if (f2fs_sb_has_lost_found(sbi) &&
|
inode->i_ino == F2FS_ROOT_INO(sbi))
|
return -EPERM;
|
|
return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
|
F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
|
ctx, len, fs_data, XATTR_CREATE);
|
}
|
|
static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb)
|
{
|
return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy;
|
}
|
|
static bool f2fs_has_stable_inodes(struct super_block *sb)
|
{
|
return true;
|
}
|
|
static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
|
int *ino_bits_ret, int *lblk_bits_ret)
|
{
|
*ino_bits_ret = 8 * sizeof(nid_t);
|
*lblk_bits_ret = 8 * sizeof(block_t);
|
}
|
|
static int f2fs_get_num_devices(struct super_block *sb)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
|
if (f2fs_is_multi_device(sbi))
|
return sbi->s_ndevs;
|
return 1;
|
}
|
|
static void f2fs_get_devices(struct super_block *sb,
|
struct request_queue **devs)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
int i;
|
|
for (i = 0; i < sbi->s_ndevs; i++)
|
devs[i] = bdev_get_queue(FDEV(i).bdev);
|
}
|
|
static const struct fscrypt_operations f2fs_cryptops = {
|
.key_prefix = "f2fs:",
|
.get_context = f2fs_get_context,
|
.set_context = f2fs_set_context,
|
.get_dummy_policy = f2fs_get_dummy_policy,
|
.empty_dir = f2fs_empty_dir,
|
.max_namelen = F2FS_NAME_LEN,
|
.has_stable_inodes = f2fs_has_stable_inodes,
|
.get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
|
.get_num_devices = f2fs_get_num_devices,
|
.get_devices = f2fs_get_devices,
|
};
|
#endif
|
|
static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
|
u64 ino, u32 generation)
|
{
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
struct inode *inode;
|
|
if (f2fs_check_nid_range(sbi, ino))
|
return ERR_PTR(-ESTALE);
|
|
/*
|
* f2fs_iget isn't quite right if the inode is currently unallocated!
|
* However f2fs_iget currently does appropriate checks to handle stale
|
* inodes so everything is OK.
|
*/
|
inode = f2fs_iget(sb, ino);
|
if (IS_ERR(inode))
|
return ERR_CAST(inode);
|
if (unlikely(generation && inode->i_generation != generation)) {
|
/* we didn't find the right inode.. */
|
iput(inode);
|
return ERR_PTR(-ESTALE);
|
}
|
return inode;
|
}
|
|
static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
|
int fh_len, int fh_type)
|
{
|
return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
|
f2fs_nfs_get_inode);
|
}
|
|
static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
|
int fh_len, int fh_type)
|
{
|
return generic_fh_to_parent(sb, fid, fh_len, fh_type,
|
f2fs_nfs_get_inode);
|
}
|
|
static const struct export_operations f2fs_export_ops = {
|
.fh_to_dentry = f2fs_fh_to_dentry,
|
.fh_to_parent = f2fs_fh_to_parent,
|
.get_parent = f2fs_get_parent,
|
};
|
|
loff_t max_file_blocks(struct inode *inode)
|
{
|
loff_t result = 0;
|
loff_t leaf_count;
|
|
/*
|
* note: previously, result is equal to (DEF_ADDRS_PER_INODE -
|
* DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
|
* space in inode.i_addr, it will be more safe to reassign
|
* result as zero.
|
*/
|
|
if (inode && f2fs_compressed_file(inode))
|
leaf_count = ADDRS_PER_BLOCK(inode);
|
else
|
leaf_count = DEF_ADDRS_PER_BLOCK;
|
|
/* two direct node blocks */
|
result += (leaf_count * 2);
|
|
/* two indirect node blocks */
|
leaf_count *= NIDS_PER_BLOCK;
|
result += (leaf_count * 2);
|
|
/* one double indirect node block */
|
leaf_count *= NIDS_PER_BLOCK;
|
result += leaf_count;
|
|
return result;
|
}
|
|
static int __f2fs_commit_super(struct buffer_head *bh,
|
struct f2fs_super_block *super)
|
{
|
lock_buffer(bh);
|
if (super)
|
memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
|
set_buffer_dirty(bh);
|
unlock_buffer(bh);
|
|
/* it's rare case, we can do fua all the time */
|
return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
|
}
|
|
static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
|
struct buffer_head *bh)
|
{
|
struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
|
(bh->b_data + F2FS_SUPER_OFFSET);
|
struct super_block *sb = sbi->sb;
|
u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
|
u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
|
u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
|
u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
|
u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
|
u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
|
u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
|
u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
|
u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
|
u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
|
u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
|
u32 segment_count = le32_to_cpu(raw_super->segment_count);
|
u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
|
u64 main_end_blkaddr = main_blkaddr +
|
(segment_count_main << log_blocks_per_seg);
|
u64 seg_end_blkaddr = segment0_blkaddr +
|
(segment_count << log_blocks_per_seg);
|
|
if (segment0_blkaddr != cp_blkaddr) {
|
f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
|
segment0_blkaddr, cp_blkaddr);
|
return true;
|
}
|
|
if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
|
sit_blkaddr) {
|
f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
|
cp_blkaddr, sit_blkaddr,
|
segment_count_ckpt << log_blocks_per_seg);
|
return true;
|
}
|
|
if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
|
nat_blkaddr) {
|
f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
|
sit_blkaddr, nat_blkaddr,
|
segment_count_sit << log_blocks_per_seg);
|
return true;
|
}
|
|
if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
|
ssa_blkaddr) {
|
f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
|
nat_blkaddr, ssa_blkaddr,
|
segment_count_nat << log_blocks_per_seg);
|
return true;
|
}
|
|
if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
|
main_blkaddr) {
|
f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
|
ssa_blkaddr, main_blkaddr,
|
segment_count_ssa << log_blocks_per_seg);
|
return true;
|
}
|
|
if (main_end_blkaddr > seg_end_blkaddr) {
|
f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)",
|
main_blkaddr, seg_end_blkaddr,
|
segment_count_main << log_blocks_per_seg);
|
return true;
|
} else if (main_end_blkaddr < seg_end_blkaddr) {
|
int err = 0;
|
char *res;
|
|
/* fix in-memory information all the time */
|
raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
|
segment0_blkaddr) >> log_blocks_per_seg);
|
|
if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
|
set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
|
res = "internally";
|
} else {
|
err = __f2fs_commit_super(bh, NULL);
|
res = err ? "failed" : "done";
|
}
|
f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)",
|
res, main_blkaddr, seg_end_blkaddr,
|
segment_count_main << log_blocks_per_seg);
|
if (err)
|
return true;
|
}
|
return false;
|
}
|
|
static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
|
struct buffer_head *bh)
|
{
|
block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main;
|
block_t total_sections, blocks_per_seg;
|
struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
|
(bh->b_data + F2FS_SUPER_OFFSET);
|
size_t crc_offset = 0;
|
__u32 crc = 0;
|
|
if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
|
f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
|
F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
|
return -EINVAL;
|
}
|
|
/* Check checksum_offset and crc in superblock */
|
if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
|
crc_offset = le32_to_cpu(raw_super->checksum_offset);
|
if (crc_offset !=
|
offsetof(struct f2fs_super_block, crc)) {
|
f2fs_info(sbi, "Invalid SB checksum offset: %zu",
|
crc_offset);
|
return -EFSCORRUPTED;
|
}
|
crc = le32_to_cpu(raw_super->crc);
|
if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
|
f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
|
return -EFSCORRUPTED;
|
}
|
}
|
|
/* Currently, support only 4KB block size */
|
if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) {
|
f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u",
|
le32_to_cpu(raw_super->log_blocksize),
|
F2FS_BLKSIZE_BITS);
|
return -EFSCORRUPTED;
|
}
|
|
/* check log blocks per segment */
|
if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
|
f2fs_info(sbi, "Invalid log blocks per segment (%u)",
|
le32_to_cpu(raw_super->log_blocks_per_seg));
|
return -EFSCORRUPTED;
|
}
|
|
/* Currently, support 512/1024/2048/4096 bytes sector size */
|
if (le32_to_cpu(raw_super->log_sectorsize) >
|
F2FS_MAX_LOG_SECTOR_SIZE ||
|
le32_to_cpu(raw_super->log_sectorsize) <
|
F2FS_MIN_LOG_SECTOR_SIZE) {
|
f2fs_info(sbi, "Invalid log sectorsize (%u)",
|
le32_to_cpu(raw_super->log_sectorsize));
|
return -EFSCORRUPTED;
|
}
|
if (le32_to_cpu(raw_super->log_sectors_per_block) +
|
le32_to_cpu(raw_super->log_sectorsize) !=
|
F2FS_MAX_LOG_SECTOR_SIZE) {
|
f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
|
le32_to_cpu(raw_super->log_sectors_per_block),
|
le32_to_cpu(raw_super->log_sectorsize));
|
return -EFSCORRUPTED;
|
}
|
|
segment_count = le32_to_cpu(raw_super->segment_count);
|
segment_count_main = le32_to_cpu(raw_super->segment_count_main);
|
segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
|
secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
|
total_sections = le32_to_cpu(raw_super->section_count);
|
|
/* blocks_per_seg should be 512, given the above check */
|
blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
|
|
if (segment_count > F2FS_MAX_SEGMENT ||
|
segment_count < F2FS_MIN_SEGMENTS) {
|
f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
|
return -EFSCORRUPTED;
|
}
|
|
if (total_sections > segment_count_main || total_sections < 1 ||
|
segs_per_sec > segment_count || !segs_per_sec) {
|
f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
|
segment_count, total_sections, segs_per_sec);
|
return -EFSCORRUPTED;
|
}
|
|
if (segment_count_main != total_sections * segs_per_sec) {
|
f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)",
|
segment_count_main, total_sections, segs_per_sec);
|
return -EFSCORRUPTED;
|
}
|
|
if ((segment_count / segs_per_sec) < total_sections) {
|
f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
|
segment_count, segs_per_sec, total_sections);
|
return -EFSCORRUPTED;
|
}
|
|
if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
|
f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
|
segment_count, le64_to_cpu(raw_super->block_count));
|
return -EFSCORRUPTED;
|
}
|
|
if (RDEV(0).path[0]) {
|
block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
|
int i = 1;
|
|
while (i < MAX_DEVICES && RDEV(i).path[0]) {
|
dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
|
i++;
|
}
|
if (segment_count != dev_seg_count) {
|
f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
|
segment_count, dev_seg_count);
|
return -EFSCORRUPTED;
|
}
|
} else {
|
if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) &&
|
!bdev_is_zoned(sbi->sb->s_bdev)) {
|
f2fs_info(sbi, "Zoned block device path is missing");
|
return -EFSCORRUPTED;
|
}
|
}
|
|
if (secs_per_zone > total_sections || !secs_per_zone) {
|
f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
|
secs_per_zone, total_sections);
|
return -EFSCORRUPTED;
|
}
|
if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
|
raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
|
(le32_to_cpu(raw_super->extension_count) +
|
raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
|
f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
|
le32_to_cpu(raw_super->extension_count),
|
raw_super->hot_ext_count,
|
F2FS_MAX_EXTENSION);
|
return -EFSCORRUPTED;
|
}
|
|
if (le32_to_cpu(raw_super->cp_payload) >=
|
(blocks_per_seg - F2FS_CP_PACKS -
|
NR_CURSEG_PERSIST_TYPE)) {
|
f2fs_info(sbi, "Insane cp_payload (%u >= %u)",
|
le32_to_cpu(raw_super->cp_payload),
|
blocks_per_seg - F2FS_CP_PACKS -
|
NR_CURSEG_PERSIST_TYPE);
|
return -EFSCORRUPTED;
|
}
|
|
/* check reserved ino info */
|
if (le32_to_cpu(raw_super->node_ino) != 1 ||
|
le32_to_cpu(raw_super->meta_ino) != 2 ||
|
le32_to_cpu(raw_super->root_ino) != 3) {
|
f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
|
le32_to_cpu(raw_super->node_ino),
|
le32_to_cpu(raw_super->meta_ino),
|
le32_to_cpu(raw_super->root_ino));
|
return -EFSCORRUPTED;
|
}
|
|
/* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
|
if (sanity_check_area_boundary(sbi, bh))
|
return -EFSCORRUPTED;
|
|
return 0;
|
}
|
|
int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
|
{
|
unsigned int total, fsmeta;
|
struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
|
unsigned int ovp_segments, reserved_segments;
|
unsigned int main_segs, blocks_per_seg;
|
unsigned int sit_segs, nat_segs;
|
unsigned int sit_bitmap_size, nat_bitmap_size;
|
unsigned int log_blocks_per_seg;
|
unsigned int segment_count_main;
|
unsigned int cp_pack_start_sum, cp_payload;
|
block_t user_block_count, valid_user_blocks;
|
block_t avail_node_count, valid_node_count;
|
unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks;
|
int i, j;
|
|
total = le32_to_cpu(raw_super->segment_count);
|
fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
|
sit_segs = le32_to_cpu(raw_super->segment_count_sit);
|
fsmeta += sit_segs;
|
nat_segs = le32_to_cpu(raw_super->segment_count_nat);
|
fsmeta += nat_segs;
|
fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
|
fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
|
|
if (unlikely(fsmeta >= total))
|
return 1;
|
|
ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
|
reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
|
|
if (!f2fs_sb_has_readonly(sbi) &&
|
unlikely(fsmeta < F2FS_MIN_META_SEGMENTS ||
|
ovp_segments == 0 || reserved_segments == 0)) {
|
f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
|
return 1;
|
}
|
user_block_count = le64_to_cpu(ckpt->user_block_count);
|
segment_count_main = le32_to_cpu(raw_super->segment_count_main) +
|
(f2fs_sb_has_readonly(sbi) ? 1 : 0);
|
log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
|
if (!user_block_count || user_block_count >=
|
segment_count_main << log_blocks_per_seg) {
|
f2fs_err(sbi, "Wrong user_block_count: %u",
|
user_block_count);
|
return 1;
|
}
|
|
valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
|
if (valid_user_blocks > user_block_count) {
|
f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
|
valid_user_blocks, user_block_count);
|
return 1;
|
}
|
|
valid_node_count = le32_to_cpu(ckpt->valid_node_count);
|
avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
|
if (valid_node_count > avail_node_count) {
|
f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
|
valid_node_count, avail_node_count);
|
return 1;
|
}
|
|
main_segs = le32_to_cpu(raw_super->segment_count_main);
|
blocks_per_seg = sbi->blocks_per_seg;
|
|
for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
|
if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
|
le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
|
return 1;
|
|
if (f2fs_sb_has_readonly(sbi))
|
goto check_data;
|
|
for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
|
if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
|
le32_to_cpu(ckpt->cur_node_segno[j])) {
|
f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
|
i, j,
|
le32_to_cpu(ckpt->cur_node_segno[i]));
|
return 1;
|
}
|
}
|
}
|
check_data:
|
for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
|
if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
|
le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
|
return 1;
|
|
if (f2fs_sb_has_readonly(sbi))
|
goto skip_cross;
|
|
for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
|
if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
|
le32_to_cpu(ckpt->cur_data_segno[j])) {
|
f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
|
i, j,
|
le32_to_cpu(ckpt->cur_data_segno[i]));
|
return 1;
|
}
|
}
|
}
|
for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
|
for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
|
if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
|
le32_to_cpu(ckpt->cur_data_segno[j])) {
|
f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
|
i, j,
|
le32_to_cpu(ckpt->cur_node_segno[i]));
|
return 1;
|
}
|
}
|
}
|
skip_cross:
|
sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
|
nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
|
|
if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
|
nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
|
f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
|
sit_bitmap_size, nat_bitmap_size);
|
return 1;
|
}
|
|
cp_pack_start_sum = __start_sum_addr(sbi);
|
cp_payload = __cp_payload(sbi);
|
if (cp_pack_start_sum < cp_payload + 1 ||
|
cp_pack_start_sum > blocks_per_seg - 1 -
|
NR_CURSEG_PERSIST_TYPE) {
|
f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
|
cp_pack_start_sum);
|
return 1;
|
}
|
|
if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
|
le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
|
f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
|
"please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
|
"fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
|
le32_to_cpu(ckpt->checksum_offset));
|
return 1;
|
}
|
|
nat_blocks = nat_segs << log_blocks_per_seg;
|
nat_bits_bytes = nat_blocks / BITS_PER_BYTE;
|
nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
|
if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) &&
|
(cp_payload + F2FS_CP_PACKS +
|
NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) {
|
f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)",
|
cp_payload, nat_bits_blocks);
|
return 1;
|
}
|
|
if (unlikely(f2fs_cp_error(sbi))) {
|
f2fs_err(sbi, "A bug case: need to run fsck");
|
return 1;
|
}
|
return 0;
|
}
|
|
static void init_sb_info(struct f2fs_sb_info *sbi)
|
{
|
struct f2fs_super_block *raw_super = sbi->raw_super;
|
int i;
|
|
sbi->log_sectors_per_block =
|
le32_to_cpu(raw_super->log_sectors_per_block);
|
sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
|
sbi->blocksize = 1 << sbi->log_blocksize;
|
sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
|
sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
|
sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
|
sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
|
sbi->total_sections = le32_to_cpu(raw_super->section_count);
|
sbi->total_node_count =
|
(le32_to_cpu(raw_super->segment_count_nat) / 2)
|
* sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
|
F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino);
|
F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino);
|
F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino);
|
sbi->cur_victim_sec = NULL_SECNO;
|
sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
|
sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
|
sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
|
sbi->migration_granularity = sbi->segs_per_sec;
|
|
sbi->dir_level = DEF_DIR_LEVEL;
|
sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
|
sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
|
sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
|
sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
|
sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
|
sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
|
DEF_UMOUNT_DISCARD_TIMEOUT;
|
clear_sbi_flag(sbi, SBI_NEED_FSCK);
|
|
for (i = 0; i < NR_COUNT_TYPE; i++)
|
atomic_set(&sbi->nr_pages[i], 0);
|
|
for (i = 0; i < META; i++)
|
atomic_set(&sbi->wb_sync_req[i], 0);
|
|
INIT_LIST_HEAD(&sbi->s_list);
|
mutex_init(&sbi->umount_mutex);
|
init_f2fs_rwsem(&sbi->io_order_lock);
|
spin_lock_init(&sbi->cp_lock);
|
|
sbi->dirty_device = 0;
|
spin_lock_init(&sbi->dev_lock);
|
|
init_f2fs_rwsem(&sbi->sb_lock);
|
init_f2fs_rwsem(&sbi->pin_sem);
|
}
|
|
static int init_percpu_info(struct f2fs_sb_info *sbi)
|
{
|
int err;
|
|
err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
|
if (err)
|
return err;
|
|
err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
|
GFP_KERNEL);
|
if (err)
|
percpu_counter_destroy(&sbi->alloc_valid_block_count);
|
|
return err;
|
}
|
|
#ifdef CONFIG_BLK_DEV_ZONED
|
|
struct f2fs_report_zones_args {
|
struct f2fs_sb_info *sbi;
|
struct f2fs_dev_info *dev;
|
};
|
|
static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
|
void *data)
|
{
|
struct f2fs_report_zones_args *rz_args = data;
|
block_t unusable_blocks = (zone->len - zone->capacity) >>
|
F2FS_LOG_SECTORS_PER_BLOCK;
|
|
if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
|
return 0;
|
|
set_bit(idx, rz_args->dev->blkz_seq);
|
if (!rz_args->sbi->unusable_blocks_per_sec) {
|
rz_args->sbi->unusable_blocks_per_sec = unusable_blocks;
|
return 0;
|
}
|
if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) {
|
f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n");
|
return -EINVAL;
|
}
|
return 0;
|
}
|
|
static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
|
{
|
struct block_device *bdev = FDEV(devi).bdev;
|
sector_t nr_sectors = bdev->bd_part->nr_sects;
|
struct f2fs_report_zones_args rep_zone_arg;
|
int ret;
|
|
if (!f2fs_sb_has_blkzoned(sbi))
|
return 0;
|
|
if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
|
SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
|
return -EINVAL;
|
sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
|
if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
|
__ilog2_u32(sbi->blocks_per_blkz))
|
return -EINVAL;
|
sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
|
FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
|
sbi->log_blocks_per_blkz;
|
if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
|
FDEV(devi).nr_blkz++;
|
|
FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi,
|
BITS_TO_LONGS(FDEV(devi).nr_blkz)
|
* sizeof(unsigned long),
|
GFP_KERNEL);
|
if (!FDEV(devi).blkz_seq)
|
return -ENOMEM;
|
|
rep_zone_arg.sbi = sbi;
|
rep_zone_arg.dev = &FDEV(devi);
|
|
ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
|
&rep_zone_arg);
|
if (ret < 0)
|
return ret;
|
return 0;
|
}
|
#endif
|
|
/*
|
* Read f2fs raw super block.
|
* Because we have two copies of super block, so read both of them
|
* to get the first valid one. If any one of them is broken, we pass
|
* them recovery flag back to the caller.
|
*/
|
static int read_raw_super_block(struct f2fs_sb_info *sbi,
|
struct f2fs_super_block **raw_super,
|
int *valid_super_block, int *recovery)
|
{
|
struct super_block *sb = sbi->sb;
|
int block;
|
struct buffer_head *bh;
|
struct f2fs_super_block *super;
|
int err = 0;
|
|
super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
|
if (!super)
|
return -ENOMEM;
|
|
for (block = 0; block < 2; block++) {
|
bh = sb_bread(sb, block);
|
if (!bh) {
|
f2fs_err(sbi, "Unable to read %dth superblock",
|
block + 1);
|
err = -EIO;
|
*recovery = 1;
|
continue;
|
}
|
|
/* sanity checking of raw super */
|
err = sanity_check_raw_super(sbi, bh);
|
if (err) {
|
f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
|
block + 1);
|
brelse(bh);
|
*recovery = 1;
|
continue;
|
}
|
|
if (!*raw_super) {
|
memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
|
sizeof(*super));
|
*valid_super_block = block;
|
*raw_super = super;
|
}
|
brelse(bh);
|
}
|
|
/* No valid superblock */
|
if (!*raw_super)
|
kfree(super);
|
else
|
err = 0;
|
|
return err;
|
}
|
|
int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
|
{
|
struct buffer_head *bh;
|
__u32 crc = 0;
|
int err;
|
|
if ((recover && f2fs_readonly(sbi->sb)) ||
|
bdev_read_only(sbi->sb->s_bdev)) {
|
set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
|
return -EROFS;
|
}
|
|
/* we should update superblock crc here */
|
if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
|
crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
|
offsetof(struct f2fs_super_block, crc));
|
F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
|
}
|
|
/* write back-up superblock first */
|
bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
|
if (!bh)
|
return -EIO;
|
err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
|
brelse(bh);
|
|
/* if we are in recovery path, skip writing valid superblock */
|
if (recover || err)
|
return err;
|
|
/* write current valid superblock */
|
bh = sb_bread(sbi->sb, sbi->valid_super_block);
|
if (!bh)
|
return -EIO;
|
err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
|
brelse(bh);
|
return err;
|
}
|
|
void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason)
|
{
|
struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
|
int err;
|
|
f2fs_bug_on(sbi, reason >= MAX_STOP_REASON);
|
|
f2fs_down_write(&sbi->sb_lock);
|
|
if (raw_super->s_stop_reason[reason] < ((1 << BITS_PER_BYTE) - 1))
|
raw_super->s_stop_reason[reason]++;
|
|
err = f2fs_commit_super(sbi, false);
|
if (err)
|
f2fs_err(sbi, "f2fs_commit_super fails to record reason:%u err:%d",
|
reason, err);
|
|
f2fs_up_write(&sbi->sb_lock);
|
}
|
|
static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
|
{
|
struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
|
unsigned int max_devices = MAX_DEVICES;
|
int i;
|
|
/* Initialize single device information */
|
if (!RDEV(0).path[0]) {
|
if (!bdev_is_zoned(sbi->sb->s_bdev))
|
return 0;
|
max_devices = 1;
|
}
|
|
/*
|
* Initialize multiple devices information, or single
|
* zoned block device information.
|
*/
|
sbi->devs = f2fs_kzalloc(sbi,
|
array_size(max_devices,
|
sizeof(struct f2fs_dev_info)),
|
GFP_KERNEL);
|
if (!sbi->devs)
|
return -ENOMEM;
|
|
for (i = 0; i < max_devices; i++) {
|
|
if (i > 0 && !RDEV(i).path[0])
|
break;
|
|
if (max_devices == 1) {
|
/* Single zoned block device mount */
|
FDEV(0).bdev =
|
blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
|
sbi->sb->s_mode, sbi->sb->s_type);
|
} else {
|
/* Multi-device mount */
|
memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
|
FDEV(i).total_segments =
|
le32_to_cpu(RDEV(i).total_segments);
|
if (i == 0) {
|
FDEV(i).start_blk = 0;
|
FDEV(i).end_blk = FDEV(i).start_blk +
|
(FDEV(i).total_segments <<
|
sbi->log_blocks_per_seg) - 1 +
|
le32_to_cpu(raw_super->segment0_blkaddr);
|
} else {
|
FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
|
FDEV(i).end_blk = FDEV(i).start_blk +
|
(FDEV(i).total_segments <<
|
sbi->log_blocks_per_seg) - 1;
|
}
|
FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
|
sbi->sb->s_mode, sbi->sb->s_type);
|
}
|
if (IS_ERR(FDEV(i).bdev))
|
return PTR_ERR(FDEV(i).bdev);
|
|
/* to release errored devices */
|
sbi->s_ndevs = i + 1;
|
|
#ifdef CONFIG_BLK_DEV_ZONED
|
if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
|
!f2fs_sb_has_blkzoned(sbi)) {
|
f2fs_err(sbi, "Zoned block device feature not enabled");
|
return -EINVAL;
|
}
|
if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
|
if (init_blkz_info(sbi, i)) {
|
f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
|
return -EINVAL;
|
}
|
if (max_devices == 1)
|
break;
|
f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
|
i, FDEV(i).path,
|
FDEV(i).total_segments,
|
FDEV(i).start_blk, FDEV(i).end_blk,
|
bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
|
"Host-aware" : "Host-managed");
|
continue;
|
}
|
#endif
|
f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
|
i, FDEV(i).path,
|
FDEV(i).total_segments,
|
FDEV(i).start_blk, FDEV(i).end_blk);
|
}
|
f2fs_info(sbi,
|
"IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
|
return 0;
|
}
|
|
static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
|
{
|
#ifdef CONFIG_UNICODE
|
if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) {
|
const struct f2fs_sb_encodings *encoding_info;
|
struct unicode_map *encoding;
|
__u16 encoding_flags;
|
|
if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
|
&encoding_flags)) {
|
f2fs_err(sbi,
|
"Encoding requested by superblock is unknown");
|
return -EINVAL;
|
}
|
|
encoding = utf8_load(encoding_info->version);
|
if (IS_ERR(encoding)) {
|
f2fs_err(sbi,
|
"can't mount with superblock charset: %s-%s "
|
"not supported by the kernel. flags: 0x%x.",
|
encoding_info->name, encoding_info->version,
|
encoding_flags);
|
return PTR_ERR(encoding);
|
}
|
f2fs_info(sbi, "Using encoding defined by superblock: "
|
"%s-%s with flags 0x%hx", encoding_info->name,
|
encoding_info->version?:"\b", encoding_flags);
|
|
sbi->sb->s_encoding = encoding;
|
sbi->sb->s_encoding_flags = encoding_flags;
|
}
|
#else
|
if (f2fs_sb_has_casefold(sbi)) {
|
f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
|
return -EINVAL;
|
}
|
#endif
|
return 0;
|
}
|
|
static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
|
{
|
struct f2fs_sm_info *sm_i = SM_I(sbi);
|
|
/* adjust parameters according to the volume size */
|
if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
|
F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
|
sm_i->dcc_info->discard_granularity = 1;
|
sm_i->ipu_policy = 1 << F2FS_IPU_FORCE |
|
1 << F2FS_IPU_HONOR_OPU_WRITE;
|
}
|
|
sbi->readdir_ra = 1;
|
}
|
|
static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
|
{
|
struct f2fs_sb_info *sbi;
|
struct f2fs_super_block *raw_super;
|
struct inode *root;
|
int err;
|
bool skip_recovery = false, need_fsck = false;
|
char *options = NULL;
|
int recovery, i, valid_super_block;
|
struct curseg_info *seg_i;
|
int retry_cnt = 1;
|
|
try_onemore:
|
err = -EINVAL;
|
raw_super = NULL;
|
valid_super_block = -1;
|
recovery = 0;
|
|
/* allocate memory for f2fs-specific super block info */
|
sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
|
if (!sbi)
|
return -ENOMEM;
|
|
sbi->sb = sb;
|
|
/* Load the checksum driver */
|
sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
|
if (IS_ERR(sbi->s_chksum_driver)) {
|
f2fs_err(sbi, "Cannot load crc32 driver.");
|
err = PTR_ERR(sbi->s_chksum_driver);
|
sbi->s_chksum_driver = NULL;
|
goto free_sbi;
|
}
|
|
/* set a block size */
|
if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
|
f2fs_err(sbi, "unable to set blocksize");
|
goto free_sbi;
|
}
|
|
err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
|
&recovery);
|
if (err)
|
goto free_sbi;
|
|
sb->s_fs_info = sbi;
|
sbi->raw_super = raw_super;
|
|
/* precompute checksum seed for metadata */
|
if (f2fs_sb_has_inode_chksum(sbi))
|
sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
|
sizeof(raw_super->uuid));
|
|
default_options(sbi, false);
|
/* parse mount options */
|
options = kstrdup((const char *)data, GFP_KERNEL);
|
if (data && !options) {
|
err = -ENOMEM;
|
goto free_sb_buf;
|
}
|
|
err = parse_options(sb, options, false);
|
if (err)
|
goto free_options;
|
|
sb->s_maxbytes = max_file_blocks(NULL) <<
|
le32_to_cpu(raw_super->log_blocksize);
|
sb->s_max_links = F2FS_LINK_MAX;
|
|
err = f2fs_setup_casefold(sbi);
|
if (err)
|
goto free_options;
|
|
#ifdef CONFIG_QUOTA
|
sb->dq_op = &f2fs_quota_operations;
|
sb->s_qcop = &f2fs_quotactl_ops;
|
sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
|
|
if (f2fs_sb_has_quota_ino(sbi)) {
|
for (i = 0; i < MAXQUOTAS; i++) {
|
if (f2fs_qf_ino(sbi->sb, i))
|
sbi->nquota_files++;
|
}
|
}
|
#endif
|
|
sb->s_op = &f2fs_sops;
|
#ifdef CONFIG_FS_ENCRYPTION
|
sb->s_cop = &f2fs_cryptops;
|
#endif
|
#ifdef CONFIG_FS_VERITY
|
sb->s_vop = &f2fs_verityops;
|
#endif
|
sb->s_xattr = f2fs_xattr_handlers;
|
sb->s_export_op = &f2fs_export_ops;
|
sb->s_magic = F2FS_SUPER_MAGIC;
|
sb->s_time_gran = 1;
|
sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
|
(test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
|
memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
|
sb->s_iflags |= SB_I_CGROUPWB;
|
|
/* init f2fs-specific super block info */
|
sbi->valid_super_block = valid_super_block;
|
init_f2fs_rwsem(&sbi->gc_lock);
|
mutex_init(&sbi->writepages);
|
init_f2fs_rwsem(&sbi->cp_global_sem);
|
init_f2fs_rwsem(&sbi->node_write);
|
init_f2fs_rwsem(&sbi->node_change);
|
|
/* disallow all the data/node/meta page writes */
|
set_sbi_flag(sbi, SBI_POR_DOING);
|
spin_lock_init(&sbi->stat_lock);
|
|
/* init iostat info */
|
spin_lock_init(&sbi->iostat_lock);
|
sbi->iostat_enable = false;
|
sbi->iostat_period_ms = DEFAULT_IOSTAT_PERIOD_MS;
|
|
for (i = 0; i < NR_PAGE_TYPE; i++) {
|
int n = (i == META) ? 1 : NR_TEMP_TYPE;
|
int j;
|
|
sbi->write_io[i] =
|
f2fs_kmalloc(sbi,
|
array_size(n,
|
sizeof(struct f2fs_bio_info)),
|
GFP_KERNEL);
|
if (!sbi->write_io[i]) {
|
err = -ENOMEM;
|
goto free_bio_info;
|
}
|
|
for (j = HOT; j < n; j++) {
|
init_f2fs_rwsem(&sbi->write_io[i][j].io_rwsem);
|
sbi->write_io[i][j].sbi = sbi;
|
sbi->write_io[i][j].bio = NULL;
|
spin_lock_init(&sbi->write_io[i][j].io_lock);
|
INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
|
INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
|
init_f2fs_rwsem(&sbi->write_io[i][j].bio_list_lock);
|
}
|
}
|
|
init_f2fs_rwsem(&sbi->cp_rwsem);
|
init_f2fs_rwsem(&sbi->quota_sem);
|
init_waitqueue_head(&sbi->cp_wait);
|
init_sb_info(sbi);
|
|
err = init_percpu_info(sbi);
|
if (err)
|
goto free_bio_info;
|
|
if (F2FS_IO_ALIGNED(sbi)) {
|
sbi->write_io_dummy =
|
mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
|
if (!sbi->write_io_dummy) {
|
err = -ENOMEM;
|
goto free_percpu;
|
}
|
}
|
|
/* init per sbi slab cache */
|
err = f2fs_init_xattr_caches(sbi);
|
if (err)
|
goto free_io_dummy;
|
err = f2fs_init_page_array_cache(sbi);
|
if (err)
|
goto free_xattr_cache;
|
|
/* get an inode for meta space */
|
sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
|
if (IS_ERR(sbi->meta_inode)) {
|
f2fs_err(sbi, "Failed to read F2FS meta data inode");
|
err = PTR_ERR(sbi->meta_inode);
|
goto free_page_array_cache;
|
}
|
|
err = f2fs_get_valid_checkpoint(sbi);
|
if (err) {
|
f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
|
goto free_meta_inode;
|
}
|
|
if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
|
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
|
if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
|
set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
|
sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
|
}
|
|
if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
|
set_sbi_flag(sbi, SBI_NEED_FSCK);
|
|
/* Initialize device list */
|
err = f2fs_scan_devices(sbi);
|
if (err) {
|
f2fs_err(sbi, "Failed to find devices");
|
goto free_devices;
|
}
|
|
err = f2fs_init_post_read_wq(sbi);
|
if (err) {
|
f2fs_err(sbi, "Failed to initialize post read workqueue");
|
goto free_devices;
|
}
|
|
sbi->total_valid_node_count =
|
le32_to_cpu(sbi->ckpt->valid_node_count);
|
percpu_counter_set(&sbi->total_valid_inode_count,
|
le32_to_cpu(sbi->ckpt->valid_inode_count));
|
sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
|
sbi->total_valid_block_count =
|
le64_to_cpu(sbi->ckpt->valid_block_count);
|
sbi->last_valid_block_count = sbi->total_valid_block_count;
|
sbi->reserved_blocks = 0;
|
sbi->current_reserved_blocks = 0;
|
limit_reserve_root(sbi);
|
adjust_unusable_cap_perc(sbi);
|
|
for (i = 0; i < NR_INODE_TYPE; i++) {
|
INIT_LIST_HEAD(&sbi->inode_list[i]);
|
spin_lock_init(&sbi->inode_lock[i]);
|
}
|
mutex_init(&sbi->flush_lock);
|
|
f2fs_init_extent_cache_info(sbi);
|
|
f2fs_init_ino_entry_info(sbi);
|
|
f2fs_init_fsync_node_info(sbi);
|
|
/* setup checkpoint request control and start checkpoint issue thread */
|
f2fs_init_ckpt_req_control(sbi);
|
if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) &&
|
test_opt(sbi, MERGE_CHECKPOINT)) {
|
err = f2fs_start_ckpt_thread(sbi);
|
if (err) {
|
f2fs_err(sbi,
|
"Failed to start F2FS issue_checkpoint_thread (%d)",
|
err);
|
goto stop_ckpt_thread;
|
}
|
}
|
|
/* setup f2fs internal modules */
|
err = f2fs_build_segment_manager(sbi);
|
if (err) {
|
f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
|
err);
|
goto free_sm;
|
}
|
err = f2fs_build_node_manager(sbi);
|
if (err) {
|
f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
|
err);
|
goto free_nm;
|
}
|
|
err = adjust_reserved_segment(sbi);
|
if (err)
|
goto free_nm;
|
|
/* For write statistics */
|
sbi->sectors_written_start = f2fs_get_sectors_written(sbi);
|
|
/* Read accumulated write IO statistics if exists */
|
seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
|
if (__exist_node_summaries(sbi))
|
sbi->kbytes_written =
|
le64_to_cpu(seg_i->journal->info.kbytes_written);
|
|
f2fs_build_gc_manager(sbi);
|
|
atomic_set(&sbi->no_cp_fsync_pages, 0);
|
|
err = f2fs_build_stats(sbi);
|
if (err)
|
goto free_nm;
|
|
/* get an inode for node space */
|
sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
|
if (IS_ERR(sbi->node_inode)) {
|
f2fs_err(sbi, "Failed to read node inode");
|
err = PTR_ERR(sbi->node_inode);
|
goto free_stats;
|
}
|
|
/* read root inode and dentry */
|
root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
|
if (IS_ERR(root)) {
|
f2fs_err(sbi, "Failed to read root inode");
|
err = PTR_ERR(root);
|
goto free_node_inode;
|
}
|
if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
|
!root->i_size || !root->i_nlink) {
|
iput(root);
|
err = -EINVAL;
|
goto free_node_inode;
|
}
|
|
sb->s_root = d_make_root(root); /* allocate root dentry */
|
if (!sb->s_root) {
|
err = -ENOMEM;
|
goto free_node_inode;
|
}
|
|
err = f2fs_init_compress_inode(sbi);
|
if (err)
|
goto free_root_inode;
|
|
err = f2fs_register_sysfs(sbi);
|
if (err)
|
goto free_compress_inode;
|
|
#ifdef CONFIG_QUOTA
|
/* Enable quota usage during mount */
|
if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
|
err = f2fs_enable_quotas(sb);
|
if (err)
|
f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
|
}
|
#endif
|
/* if there are any orphan inodes, free them */
|
err = f2fs_recover_orphan_inodes(sbi);
|
if (err)
|
goto free_meta;
|
|
if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
|
goto reset_checkpoint;
|
|
/* recover fsynced data */
|
if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
|
!test_opt(sbi, NORECOVERY)) {
|
/*
|
* mount should be failed, when device has readonly mode, and
|
* previous checkpoint was not done by clean system shutdown.
|
*/
|
if (f2fs_hw_is_readonly(sbi)) {
|
if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
|
err = f2fs_recover_fsync_data(sbi, true);
|
if (err > 0) {
|
err = -EROFS;
|
f2fs_err(sbi, "Need to recover fsync data, but "
|
"write access unavailable, please try "
|
"mount w/ disable_roll_forward or norecovery");
|
}
|
if (err < 0)
|
goto free_meta;
|
}
|
f2fs_info(sbi, "write access unavailable, skipping recovery");
|
goto reset_checkpoint;
|
}
|
|
if (need_fsck)
|
set_sbi_flag(sbi, SBI_NEED_FSCK);
|
|
if (skip_recovery)
|
goto reset_checkpoint;
|
|
err = f2fs_recover_fsync_data(sbi, false);
|
if (err < 0) {
|
if (err != -ENOMEM)
|
skip_recovery = true;
|
need_fsck = true;
|
f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
|
err);
|
goto free_meta;
|
}
|
} else {
|
err = f2fs_recover_fsync_data(sbi, true);
|
|
if (!f2fs_readonly(sb) && err > 0) {
|
err = -EINVAL;
|
f2fs_err(sbi, "Need to recover fsync data");
|
goto free_meta;
|
}
|
}
|
|
/*
|
* If the f2fs is not readonly and fsync data recovery succeeds,
|
* check zoned block devices' write pointer consistency.
|
*/
|
if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
|
err = f2fs_check_write_pointer(sbi);
|
if (err)
|
goto free_meta;
|
}
|
|
reset_checkpoint:
|
f2fs_init_inmem_curseg(sbi);
|
|
/* f2fs_recover_fsync_data() cleared this already */
|
clear_sbi_flag(sbi, SBI_POR_DOING);
|
|
if (test_opt(sbi, DISABLE_CHECKPOINT)) {
|
err = f2fs_disable_checkpoint(sbi);
|
if (err)
|
goto sync_free_meta;
|
} else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
|
f2fs_enable_checkpoint(sbi);
|
}
|
|
/*
|
* If filesystem is not mounted as read-only then
|
* do start the gc_thread.
|
*/
|
if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF ||
|
test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) {
|
/* After POR, we can run background GC thread.*/
|
err = f2fs_start_gc_thread(sbi);
|
if (err)
|
goto sync_free_meta;
|
}
|
kvfree(options);
|
|
/* recover broken superblock */
|
if (recovery) {
|
err = f2fs_commit_super(sbi, true);
|
f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
|
sbi->valid_super_block ? 1 : 2, err);
|
}
|
|
f2fs_join_shrinker(sbi);
|
|
f2fs_tuning_parameters(sbi);
|
|
f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
|
cur_cp_version(F2FS_CKPT(sbi)));
|
f2fs_update_time(sbi, CP_TIME);
|
f2fs_update_time(sbi, REQ_TIME);
|
clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
|
return 0;
|
|
sync_free_meta:
|
/* safe to flush all the data */
|
sync_filesystem(sbi->sb);
|
retry_cnt = 0;
|
|
free_meta:
|
#ifdef CONFIG_QUOTA
|
f2fs_truncate_quota_inode_pages(sb);
|
if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
|
f2fs_quota_off_umount(sbi->sb);
|
#endif
|
/*
|
* Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
|
* failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
|
* followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
|
* falls into an infinite loop in f2fs_sync_meta_pages().
|
*/
|
truncate_inode_pages_final(META_MAPPING(sbi));
|
/* evict some inodes being cached by GC */
|
evict_inodes(sb);
|
f2fs_unregister_sysfs(sbi);
|
free_compress_inode:
|
f2fs_destroy_compress_inode(sbi);
|
free_root_inode:
|
dput(sb->s_root);
|
sb->s_root = NULL;
|
free_node_inode:
|
f2fs_release_ino_entry(sbi, true);
|
truncate_inode_pages_final(NODE_MAPPING(sbi));
|
iput(sbi->node_inode);
|
sbi->node_inode = NULL;
|
free_stats:
|
f2fs_destroy_stats(sbi);
|
free_nm:
|
/* stop discard thread before destroying node manager */
|
f2fs_stop_discard_thread(sbi);
|
f2fs_destroy_node_manager(sbi);
|
free_sm:
|
f2fs_destroy_segment_manager(sbi);
|
f2fs_destroy_post_read_wq(sbi);
|
stop_ckpt_thread:
|
f2fs_stop_ckpt_thread(sbi);
|
free_devices:
|
destroy_device_list(sbi);
|
kvfree(sbi->ckpt);
|
free_meta_inode:
|
make_bad_inode(sbi->meta_inode);
|
iput(sbi->meta_inode);
|
sbi->meta_inode = NULL;
|
free_page_array_cache:
|
f2fs_destroy_page_array_cache(sbi);
|
free_xattr_cache:
|
f2fs_destroy_xattr_caches(sbi);
|
free_io_dummy:
|
mempool_destroy(sbi->write_io_dummy);
|
free_percpu:
|
destroy_percpu_info(sbi);
|
free_bio_info:
|
for (i = 0; i < NR_PAGE_TYPE; i++)
|
kvfree(sbi->write_io[i]);
|
|
#ifdef CONFIG_UNICODE
|
utf8_unload(sb->s_encoding);
|
sb->s_encoding = NULL;
|
#endif
|
free_options:
|
#ifdef CONFIG_QUOTA
|
for (i = 0; i < MAXQUOTAS; i++)
|
kfree(F2FS_OPTION(sbi).s_qf_names[i]);
|
#endif
|
fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
|
kvfree(options);
|
free_sb_buf:
|
kfree(raw_super);
|
free_sbi:
|
if (sbi->s_chksum_driver)
|
crypto_free_shash(sbi->s_chksum_driver);
|
kfree(sbi);
|
|
/* give only one another chance */
|
if (retry_cnt > 0 && skip_recovery) {
|
retry_cnt--;
|
shrink_dcache_sb(sb);
|
goto try_onemore;
|
}
|
return err;
|
}
|
|
static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
|
const char *dev_name, void *data)
|
{
|
return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
|
}
|
|
static void kill_f2fs_super(struct super_block *sb)
|
{
|
if (sb->s_root) {
|
struct f2fs_sb_info *sbi = F2FS_SB(sb);
|
|
set_sbi_flag(sbi, SBI_IS_CLOSE);
|
f2fs_stop_gc_thread(sbi);
|
f2fs_stop_discard_thread(sbi);
|
|
#ifdef CONFIG_F2FS_FS_COMPRESSION
|
/*
|
* latter evict_inode() can bypass checking and invalidating
|
* compress inode cache.
|
*/
|
if (test_opt(sbi, COMPRESS_CACHE))
|
truncate_inode_pages_final(COMPRESS_MAPPING(sbi));
|
#endif
|
|
if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
|
!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
|
struct cp_control cpc = {
|
.reason = CP_UMOUNT,
|
};
|
f2fs_write_checkpoint(sbi, &cpc);
|
}
|
|
if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
|
sb->s_flags &= ~SB_RDONLY;
|
}
|
kill_block_super(sb);
|
}
|
|
static struct file_system_type f2fs_fs_type = {
|
.owner = THIS_MODULE,
|
.name = "f2fs",
|
.mount = f2fs_mount,
|
.kill_sb = kill_f2fs_super,
|
.fs_flags = FS_REQUIRES_DEV,
|
};
|
MODULE_ALIAS_FS("f2fs");
|
|
static int __init init_inodecache(void)
|
{
|
f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
|
sizeof(struct f2fs_inode_info), 0,
|
SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
|
if (!f2fs_inode_cachep)
|
return -ENOMEM;
|
return 0;
|
}
|
|
static void destroy_inodecache(void)
|
{
|
/*
|
* Make sure all delayed rcu free inodes are flushed before we
|
* destroy cache.
|
*/
|
rcu_barrier();
|
kmem_cache_destroy(f2fs_inode_cachep);
|
}
|
|
static int __init init_f2fs_fs(void)
|
{
|
int err;
|
|
if (PAGE_SIZE != F2FS_BLKSIZE) {
|
printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
|
PAGE_SIZE, F2FS_BLKSIZE);
|
return -EINVAL;
|
}
|
|
err = init_inodecache();
|
if (err)
|
goto fail;
|
err = f2fs_create_node_manager_caches();
|
if (err)
|
goto free_inodecache;
|
err = f2fs_create_segment_manager_caches();
|
if (err)
|
goto free_node_manager_caches;
|
err = f2fs_create_checkpoint_caches();
|
if (err)
|
goto free_segment_manager_caches;
|
err = f2fs_create_recovery_cache();
|
if (err)
|
goto free_checkpoint_caches;
|
err = f2fs_create_extent_cache();
|
if (err)
|
goto free_recovery_cache;
|
err = f2fs_create_garbage_collection_cache();
|
if (err)
|
goto free_extent_cache;
|
err = f2fs_init_sysfs();
|
if (err)
|
goto free_garbage_collection_cache;
|
err = register_shrinker(&f2fs_shrinker_info);
|
if (err)
|
goto free_sysfs;
|
err = register_filesystem(&f2fs_fs_type);
|
if (err)
|
goto free_shrinker;
|
f2fs_create_root_stats();
|
err = f2fs_init_post_read_processing();
|
if (err)
|
goto free_root_stats;
|
err = f2fs_init_bio_entry_cache();
|
if (err)
|
goto free_post_read;
|
err = f2fs_init_bioset();
|
if (err)
|
goto free_bio_enrty_cache;
|
err = f2fs_init_compress_mempool();
|
if (err)
|
goto free_bioset;
|
err = f2fs_init_compress_cache();
|
if (err)
|
goto free_compress_mempool;
|
err = f2fs_create_casefold_cache();
|
if (err)
|
goto free_compress_cache;
|
return 0;
|
free_compress_cache:
|
f2fs_destroy_compress_cache();
|
free_compress_mempool:
|
f2fs_destroy_compress_mempool();
|
free_bioset:
|
f2fs_destroy_bioset();
|
free_bio_enrty_cache:
|
f2fs_destroy_bio_entry_cache();
|
free_post_read:
|
f2fs_destroy_post_read_processing();
|
free_root_stats:
|
f2fs_destroy_root_stats();
|
unregister_filesystem(&f2fs_fs_type);
|
free_shrinker:
|
unregister_shrinker(&f2fs_shrinker_info);
|
free_sysfs:
|
f2fs_exit_sysfs();
|
free_garbage_collection_cache:
|
f2fs_destroy_garbage_collection_cache();
|
free_extent_cache:
|
f2fs_destroy_extent_cache();
|
free_recovery_cache:
|
f2fs_destroy_recovery_cache();
|
free_checkpoint_caches:
|
f2fs_destroy_checkpoint_caches();
|
free_segment_manager_caches:
|
f2fs_destroy_segment_manager_caches();
|
free_node_manager_caches:
|
f2fs_destroy_node_manager_caches();
|
free_inodecache:
|
destroy_inodecache();
|
fail:
|
return err;
|
}
|
|
static void __exit exit_f2fs_fs(void)
|
{
|
f2fs_destroy_casefold_cache();
|
f2fs_destroy_compress_cache();
|
f2fs_destroy_compress_mempool();
|
f2fs_destroy_bioset();
|
f2fs_destroy_bio_entry_cache();
|
f2fs_destroy_post_read_processing();
|
f2fs_destroy_root_stats();
|
unregister_filesystem(&f2fs_fs_type);
|
unregister_shrinker(&f2fs_shrinker_info);
|
f2fs_exit_sysfs();
|
f2fs_destroy_garbage_collection_cache();
|
f2fs_destroy_extent_cache();
|
f2fs_destroy_recovery_cache();
|
f2fs_destroy_checkpoint_caches();
|
f2fs_destroy_segment_manager_caches();
|
f2fs_destroy_node_manager_caches();
|
destroy_inodecache();
|
}
|
|
module_init(init_f2fs_fs)
|
module_exit(exit_f2fs_fs)
|
|
MODULE_AUTHOR("Samsung Electronics's Praesto Team");
|
MODULE_DESCRIPTION("Flash Friendly File System");
|
MODULE_LICENSE("GPL");
|
MODULE_IMPORT_NS(ANDROID_GKI_VFS_EXPORT_ONLY);
|
MODULE_SOFTDEP("pre: crc32");
|
