From 2f7c68cb55ecb7331f2381deb497c27155f32faf Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 03 Jan 2024 09:43:39 +0000
Subject: [PATCH] update kernel to 5.10.198
---
kernel/fs/ext4/ext4.h | 675 +++++++++++++++++++++++++++++++++++++++++---------------
1 files changed, 493 insertions(+), 182 deletions(-)
diff --git a/kernel/fs/ext4/ext4.h b/kernel/fs/ext4/ext4.h
index 8268d07..6709f7a 100644
--- a/kernel/fs/ext4/ext4.h
+++ b/kernel/fs/ext4/ext4.h
@@ -27,7 +27,6 @@
#include <linux/seqlock.h>
#include <linux/mutex.h>
#include <linux/timer.h>
-#include <linux/version.h>
#include <linux/wait.h>
#include <linux/sched/signal.h>
#include <linux/blockgroup_lock.h>
@@ -36,6 +35,7 @@
#include <crypto/hash.h>
#include <linux/falloc.h>
#include <linux/percpu-rwsem.h>
+#include <linux/fiemap.h>
#ifdef __KERNEL__
#include <linux/compat.h>
#endif
@@ -44,15 +44,6 @@
#include <linux/fsverity.h>
#include <linux/compiler.h>
-
-/* Until this gets included into linux/compiler-gcc.h */
-#ifndef __nonstring
-#if defined(GCC_VERSION) && (GCC_VERSION >= 80000)
-#define __nonstring __attribute__((nonstring))
-#else
-#define __nonstring
-#endif
-#endif
/*
* The fourth extended filesystem constants/structures
@@ -89,14 +80,22 @@
#define ext4_debug(fmt, ...) no_printk(fmt, ##__VA_ARGS__)
#endif
-/*
- * Turn on EXT_DEBUG to get lots of info about extents operations.
- */
+ /*
+ * Turn on EXT_DEBUG to enable ext4_ext_show_path/leaf/move in extents.c
+ */
#define EXT_DEBUG__
-#ifdef EXT_DEBUG
-#define ext_debug(fmt, ...) printk(fmt, ##__VA_ARGS__)
+
+/*
+ * Dynamic printk for controlled extents debugging.
+ */
+#ifdef CONFIG_EXT4_DEBUG
+#define ext_debug(ino, fmt, ...) \
+ pr_debug("[%s/%d] EXT4-fs (%s): ino %lu: (%s, %d): %s:" fmt, \
+ current->comm, task_pid_nr(current), \
+ ino->i_sb->s_id, ino->i_ino, __FILE__, __LINE__, \
+ __func__, ##__VA_ARGS__)
#else
-#define ext_debug(fmt, ...) no_printk(fmt, ##__VA_ARGS__)
+#define ext_debug(ino, fmt, ...) no_printk(fmt, ##__VA_ARGS__)
#endif
/* data type for block offset of block group */
@@ -151,6 +150,8 @@
#define EXT4_MB_USE_ROOT_BLOCKS 0x1000
/* Use blocks from reserved pool */
#define EXT4_MB_USE_RESERVED 0x2000
+/* Do strict check for free blocks while retrying block allocation */
+#define EXT4_MB_STRICT_CHECK 0x4000
struct ext4_allocation_request {
/* target inode for block we're allocating */
@@ -180,10 +181,10 @@
* well as to store the information returned by ext4_map_blocks(). It
* takes less room on the stack than a struct buffer_head.
*/
-#define EXT4_MAP_NEW (1 << BH_New)
-#define EXT4_MAP_MAPPED (1 << BH_Mapped)
-#define EXT4_MAP_UNWRITTEN (1 << BH_Unwritten)
-#define EXT4_MAP_BOUNDARY (1 << BH_Boundary)
+#define EXT4_MAP_NEW BIT(BH_New)
+#define EXT4_MAP_MAPPED BIT(BH_Mapped)
+#define EXT4_MAP_UNWRITTEN BIT(BH_Unwritten)
+#define EXT4_MAP_BOUNDARY BIT(BH_Boundary)
#define EXT4_MAP_FLAGS (EXT4_MAP_NEW | EXT4_MAP_MAPPED |\
EXT4_MAP_UNWRITTEN | EXT4_MAP_BOUNDARY)
@@ -207,6 +208,12 @@
*/
#define EXT4_IO_END_UNWRITTEN 0x0001
+struct ext4_io_end_vec {
+ struct list_head list; /* list of io_end_vec */
+ loff_t offset; /* offset in the file */
+ ssize_t size; /* size of the extent */
+};
+
/*
* For converting unwritten extents on a work queue. 'handle' is used for
* buffered writeback.
@@ -220,8 +227,7 @@
* bios covering the extent */
unsigned int flag; /* unwritten or not */
atomic_t count; /* reference counter */
- loff_t offset; /* offset in the file */
- ssize_t size; /* size of the extent */
+ struct list_head list_vec; /* list of ext4_io_end_vec */
} ext4_io_end_t;
struct ext4_io_submit {
@@ -302,6 +308,9 @@
~((ext4_fsblk_t) (s)->s_cluster_ratio - 1))
#define EXT4_LBLK_CMASK(s, lblk) ((lblk) & \
~((ext4_lblk_t) (s)->s_cluster_ratio - 1))
+/* Fill in the low bits to get the last block of the cluster */
+#define EXT4_LBLK_CFILL(sbi, lblk) ((lblk) | \
+ ((ext4_lblk_t) (sbi)->s_cluster_ratio - 1))
/* Get the cluster offset */
#define EXT4_PBLK_COFF(s, pblk) ((pblk) & \
((ext4_fsblk_t) (s)->s_cluster_ratio - 1))
@@ -415,38 +424,74 @@
#define EXT4_EXTENTS_FL 0x00080000 /* Inode uses extents */
#define EXT4_VERITY_FL 0x00100000 /* Verity protected inode */
#define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
-#define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
+/* 0x00400000 was formerly EXT4_EOFBLOCKS_FL */
+
+#define EXT4_DAX_FL 0x02000000 /* Inode is DAX */
+
#define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */
#define EXT4_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
-#define EXT4_CASEFOLD_FL 0x40000000 /* Casefolded file */
+#define EXT4_CASEFOLD_FL 0x40000000 /* Casefolded directory */
#define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */
-#define EXT4_FL_USER_VISIBLE 0x705BDFFF /* User visible flags */
-#define EXT4_FL_USER_MODIFIABLE 0x604BC0FF /* User modifiable flags */
+/* User modifiable flags */
+#define EXT4_FL_USER_MODIFIABLE (EXT4_SECRM_FL | \
+ EXT4_UNRM_FL | \
+ EXT4_COMPR_FL | \
+ EXT4_SYNC_FL | \
+ EXT4_IMMUTABLE_FL | \
+ EXT4_APPEND_FL | \
+ EXT4_NODUMP_FL | \
+ EXT4_NOATIME_FL | \
+ EXT4_JOURNAL_DATA_FL | \
+ EXT4_NOTAIL_FL | \
+ EXT4_DIRSYNC_FL | \
+ EXT4_TOPDIR_FL | \
+ EXT4_EXTENTS_FL | \
+ 0x00400000 /* EXT4_EOFBLOCKS_FL */ | \
+ EXT4_DAX_FL | \
+ EXT4_PROJINHERIT_FL | \
+ EXT4_CASEFOLD_FL)
-/* Flags we can manipulate with through EXT4_IOC_FSSETXATTR */
+/* User visible flags */
+#define EXT4_FL_USER_VISIBLE (EXT4_FL_USER_MODIFIABLE | \
+ EXT4_DIRTY_FL | \
+ EXT4_COMPRBLK_FL | \
+ EXT4_NOCOMPR_FL | \
+ EXT4_ENCRYPT_FL | \
+ EXT4_INDEX_FL | \
+ EXT4_VERITY_FL | \
+ EXT4_INLINE_DATA_FL)
+
+/* Flags we can manipulate with through FS_IOC_FSSETXATTR */
#define EXT4_FL_XFLAG_VISIBLE (EXT4_SYNC_FL | \
EXT4_IMMUTABLE_FL | \
EXT4_APPEND_FL | \
EXT4_NODUMP_FL | \
EXT4_NOATIME_FL | \
- EXT4_PROJINHERIT_FL)
+ EXT4_PROJINHERIT_FL | \
+ EXT4_DAX_FL)
/* Flags that should be inherited by new inodes from their parent. */
#define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
EXT4_NOCOMPR_FL | EXT4_JOURNAL_DATA_FL |\
EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL |\
- EXT4_PROJINHERIT_FL | EXT4_CASEFOLD_FL)
+ EXT4_PROJINHERIT_FL | EXT4_CASEFOLD_FL |\
+ EXT4_DAX_FL)
/* Flags that are appropriate for regular files (all but dir-specific ones). */
-#define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL | EXT4_CASEFOLD_FL))
+#define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL | EXT4_CASEFOLD_FL |\
+ EXT4_PROJINHERIT_FL))
/* Flags that are appropriate for non-directories/regular files. */
#define EXT4_OTHER_FLMASK (EXT4_NODUMP_FL | EXT4_NOATIME_FL)
/* The only flags that should be swapped */
#define EXT4_FL_SHOULD_SWAP (EXT4_HUGE_FILE_FL | EXT4_EXTENTS_FL)
+
+/* Flags which are mutually exclusive to DAX */
+#define EXT4_DAX_MUT_EXCL (EXT4_VERITY_FL | EXT4_ENCRYPT_FL |\
+ EXT4_JOURNAL_DATA_FL | EXT4_INLINE_DATA_FL)
/* Mask out flags that are inappropriate for the given type of inode. */
static inline __u32 ext4_mask_flags(umode_t mode, __u32 flags)
@@ -487,9 +532,11 @@
EXT4_INODE_EXTENTS = 19, /* Inode uses extents */
EXT4_INODE_VERITY = 20, /* Verity protected inode */
EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */
- EXT4_INODE_EOFBLOCKS = 22, /* Blocks allocated beyond EOF */
+/* 22 was formerly EXT4_INODE_EOFBLOCKS */
+ EXT4_INODE_DAX = 25, /* Inode is DAX */
EXT4_INODE_INLINE_DATA = 28, /* Data in inode. */
EXT4_INODE_PROJINHERIT = 29, /* Create with parents projid */
+ EXT4_INODE_CASEFOLD = 30, /* Casefolded directory */
EXT4_INODE_RESERVED = 31, /* reserved for ext4 lib */
};
@@ -506,7 +553,7 @@
*
* It's not paranoia if the Murphy's Law really *is* out to get you. :-)
*/
-#define TEST_FLAG_VALUE(FLAG) (EXT4_##FLAG##_FL == (1 << EXT4_INODE_##FLAG))
+#define TEST_FLAG_VALUE(FLAG) (EXT4_##FLAG##_FL == (1U << EXT4_INODE_##FLAG))
#define CHECK_FLAG_VALUE(FLAG) BUILD_BUG_ON(!TEST_FLAG_VALUE(FLAG))
static inline void ext4_check_flag_values(void)
@@ -533,9 +580,9 @@
CHECK_FLAG_VALUE(EXTENTS);
CHECK_FLAG_VALUE(VERITY);
CHECK_FLAG_VALUE(EA_INODE);
- CHECK_FLAG_VALUE(EOFBLOCKS);
CHECK_FLAG_VALUE(INLINE_DATA);
CHECK_FLAG_VALUE(PROJINHERIT);
+ CHECK_FLAG_VALUE(CASEFOLD);
CHECK_FLAG_VALUE(RESERVED);
}
@@ -610,8 +657,6 @@
#define EXT4_GET_BLOCKS_METADATA_NOFAIL 0x0020
/* Don't normalize allocation size (used for fallocate) */
#define EXT4_GET_BLOCKS_NO_NORMALIZE 0x0040
- /* Request will not result in inode size update (user for fallocate) */
-#define EXT4_GET_BLOCKS_KEEP_SIZE 0x0080
/* Convert written extents to unwritten */
#define EXT4_GET_BLOCKS_CONVERT_UNWRITTEN 0x0100
/* Write zeros to newly created written extents */
@@ -633,6 +678,7 @@
*/
#define EXT4_EX_NOCACHE 0x40000000
#define EXT4_EX_FORCE_CACHE 0x20000000
+#define EXT4_EX_NOFAIL 0x10000000
/*
* Flags used by ext4_free_blocks
@@ -643,12 +689,11 @@
#define EXT4_FREE_BLOCKS_NO_QUOT_UPDATE 0x0008
#define EXT4_FREE_BLOCKS_NOFREE_FIRST_CLUSTER 0x0010
#define EXT4_FREE_BLOCKS_NOFREE_LAST_CLUSTER 0x0020
+#define EXT4_FREE_BLOCKS_RERESERVE_CLUSTER 0x0040
/*
* ioctl commands
*/
-#define EXT4_IOC_GETFLAGS FS_IOC_GETFLAGS
-#define EXT4_IOC_SETFLAGS FS_IOC_SETFLAGS
#define EXT4_IOC_GETVERSION _IOR('f', 3, long)
#define EXT4_IOC_SETVERSION _IOW('f', 4, long)
#define EXT4_IOC_GETVERSION_OLD FS_IOC_GETVERSION
@@ -665,12 +710,10 @@
#define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64)
#define EXT4_IOC_SWAP_BOOT _IO('f', 17)
#define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18)
-#define EXT4_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
-#define EXT4_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
-#define EXT4_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
-
-#define EXT4_IOC_FSGETXATTR FS_IOC_FSGETXATTR
-#define EXT4_IOC_FSSETXATTR FS_IOC_FSSETXATTR
+/* ioctl codes 19--39 are reserved for fscrypt */
+#define EXT4_IOC_CLEAR_ES_CACHE _IO('f', 40)
+#define EXT4_IOC_GETSTATE _IOW('f', 41, __u32)
+#define EXT4_IOC_GET_ES_CACHE _IOWR('f', 42, struct fiemap)
#define EXT4_IOC_SHUTDOWN _IOR ('X', 125, __u32)
@@ -681,13 +724,21 @@
#define EXT4_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */
#define EXT4_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */
+/*
+ * Flags returned by EXT4_IOC_GETSTATE
+ *
+ * We only expose to userspace a subset of the state flags in
+ * i_state_flags
+ */
+#define EXT4_STATE_FLAG_EXT_PRECACHED 0x00000001
+#define EXT4_STATE_FLAG_NEW 0x00000002
+#define EXT4_STATE_FLAG_NEWENTRY 0x00000004
+#define EXT4_STATE_FLAG_DA_ALLOC_CLOSE 0x00000008
#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
/*
* ioctl commands in 32 bit emulation
*/
-#define EXT4_IOC32_GETFLAGS FS_IOC32_GETFLAGS
-#define EXT4_IOC32_SETFLAGS FS_IOC32_SETFLAGS
#define EXT4_IOC32_GETVERSION _IOR('f', 3, int)
#define EXT4_IOC32_SETVERSION _IOW('f', 4, int)
#define EXT4_IOC32_GETRSVSZ _IOR('f', 5, int)
@@ -698,11 +749,17 @@
#define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION
#endif
+/*
+ * Returned by EXT4_IOC_GET_ES_CACHE as an additional possible flag.
+ * It indicates that the entry in extent status cache is for a hole.
+ */
+#define EXT4_FIEMAP_EXTENT_HOLE 0x08000000
+
/* Max physical block we can address w/o extents */
#define EXT4_MAX_BLOCK_FILE_PHYS 0xFFFFFFFF
/* Max logical block we can support */
-#define EXT4_MAX_LOGICAL_BLOCK 0xFFFFFFFF
+#define EXT4_MAX_LOGICAL_BLOCK 0xFFFFFFFE
/*
* Structure of an inode on the disk
@@ -827,31 +884,20 @@
static inline void ext4_decode_extra_time(struct timespec64 *time,
__le32 extra)
{
- if (unlikely(extra & cpu_to_le32(EXT4_EPOCH_MASK))) {
-
-#if 1
- /* Handle legacy encoding of pre-1970 dates with epoch
- * bits 1,1. (This backwards compatibility may be removed
- * at the discretion of the ext4 developers.)
- */
- u64 extra_bits = le32_to_cpu(extra) & EXT4_EPOCH_MASK;
- if (extra_bits == 3 && ((time->tv_sec) & 0x80000000) != 0)
- extra_bits = 0;
- time->tv_sec += extra_bits << 32;
-#else
+ if (unlikely(extra & cpu_to_le32(EXT4_EPOCH_MASK)))
time->tv_sec += (u64)(le32_to_cpu(extra) & EXT4_EPOCH_MASK) << 32;
-#endif
- }
time->tv_nsec = (le32_to_cpu(extra) & EXT4_NSEC_MASK) >> EXT4_EPOCH_BITS;
}
#define EXT4_INODE_SET_XTIME(xtime, inode, raw_inode) \
do { \
- (raw_inode)->xtime = cpu_to_le32((inode)->xtime.tv_sec); \
if (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime ## _extra)) {\
+ (raw_inode)->xtime = cpu_to_le32((inode)->xtime.tv_sec); \
(raw_inode)->xtime ## _extra = \
ext4_encode_extra_time(&(inode)->xtime); \
} \
+ else \
+ (raw_inode)->xtime = cpu_to_le32(clamp_t(int32_t, (inode)->xtime.tv_sec, S32_MIN, S32_MAX)); \
} while (0)
#define EXT4_EINODE_SET_XTIME(xtime, einode, raw_inode) \
@@ -917,6 +963,7 @@
#endif /* defined(__KERNEL__) || defined(__linux__) */
#include "extents_status.h"
+#include "fast_commit.h"
/*
* Lock subclasses for i_data_sem in the ext4_inode_info structure.
@@ -933,11 +980,13 @@
* where the second inode has larger inode number
* than the first
* I_DATA_SEM_QUOTA - Used for quota inodes only
+ * I_DATA_SEM_EA - Used for ea_inodes only
*/
enum {
I_DATA_SEM_NORMAL = 0,
I_DATA_SEM_OTHER,
I_DATA_SEM_QUOTA,
+ I_DATA_SEM_EA
};
@@ -973,6 +1022,28 @@
struct rw_semaphore xattr_sem;
struct list_head i_orphan; /* unlinked but open inodes */
+
+ /* Fast commit related info */
+
+ struct list_head i_fc_list; /*
+ * inodes that need fast commit
+ * protected by sbi->s_fc_lock.
+ */
+
+ /* Start of lblk range that needs to be committed in this fast commit */
+ ext4_lblk_t i_fc_lblk_start;
+
+ /* End of lblk range that needs to be committed in this fast commit */
+ ext4_lblk_t i_fc_lblk_len;
+
+ /* Number of ongoing updates on this inode */
+ atomic_t i_fc_updates;
+
+ /* Fast commit wait queue for this inode */
+ wait_queue_head_t i_fc_wait;
+
+ /* Protect concurrent accesses on i_fc_lblk_start, i_fc_lblk_len */
+ struct mutex i_fc_lock;
/*
* i_disksize keeps track of what the inode size is ON DISK, not
@@ -1023,6 +1094,7 @@
struct timespec64 i_crtime;
/* mballoc */
+ atomic_t i_prealloc_active;
struct list_head i_prealloc_list;
spinlock_t i_prealloc_lock;
@@ -1042,8 +1114,9 @@
/* allocation reservation info for delalloc */
/* In case of bigalloc, this refer to clusters rather than blocks */
unsigned int i_reserved_data_blocks;
- ext4_lblk_t i_da_metadata_calc_last_lblock;
- int i_da_metadata_calc_len;
+
+ /* pending cluster reservations for bigalloc file systems */
+ struct ext4_pending_tree i_pending_tree;
/* on-disk additional length */
__u16 i_extra_isize;
@@ -1092,6 +1165,7 @@
#define EXT4_VALID_FS 0x0001 /* Unmounted cleanly */
#define EXT4_ERROR_FS 0x0002 /* Errors detected */
#define EXT4_ORPHAN_FS 0x0004 /* Orphans being recovered */
+#define EXT4_FC_REPLAY 0x0020 /* Fast commit replay ongoing */
/*
* Misc. filesystem flags
@@ -1113,9 +1187,9 @@
#define EXT4_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */
#define EXT4_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/
#ifdef CONFIG_FS_DAX
-#define EXT4_MOUNT_DAX 0x00200 /* Direct Access */
+#define EXT4_MOUNT_DAX_ALWAYS 0x00200 /* Direct Access */
#else
-#define EXT4_MOUNT_DAX 0
+#define EXT4_MOUNT_DAX_ALWAYS 0
#endif
#define EXT4_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */
#define EXT4_MOUNT_JOURNAL_DATA 0x00400 /* Write data to journal */
@@ -1140,7 +1214,7 @@
#define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 /* Journal checksums */
#define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */
#define EXT4_MOUNT_WARN_ON_ERROR 0x2000000 /* Trigger WARN_ON on error */
-#define EXT4_MOUNT_INLINECRYPT 0x4000000 /* Inline encryption support */
+#define EXT4_MOUNT_PREFETCH_BLOCK_BITMAPS 0x4000000
#define EXT4_MOUNT_DELALLOC 0x8000000 /* Delalloc support */
#define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 /* Abort on file data write */
#define EXT4_MOUNT_BLOCK_VALIDITY 0x20000000 /* Block validity checking */
@@ -1159,9 +1233,13 @@
blocks */
#define EXT4_MOUNT2_HURD_COMPAT 0x00000004 /* Support HURD-castrated
file systems */
-
#define EXT4_MOUNT2_EXPLICIT_JOURNAL_CHECKSUM 0x00000008 /* User explicitly
specified journal checksum */
+
+#define EXT4_MOUNT2_JOURNAL_FAST_COMMIT 0x00000010 /* Journal fast commit */
+#define EXT4_MOUNT2_DAX_NEVER 0x00000020 /* Do not allow Direct Access */
+#define EXT4_MOUNT2_DAX_INODE 0x00000040 /* For printing options only */
+
#define clear_opt(sb, opt) EXT4_SB(sb)->s_mount_opt &= \
~EXT4_MOUNT_##opt
@@ -1331,7 +1409,8 @@
__u8 s_lastcheck_hi;
__u8 s_first_error_time_hi;
__u8 s_last_error_time_hi;
- __u8 s_pad[2];
+ __u8 s_first_error_errcode;
+ __u8 s_last_error_errcode;
__le16 s_encoding; /* Filename charset encoding */
__le16 s_encoding_flags; /* Filename charset encoding flags */
__le32 s_reserved[95]; /* Padding to the end of the block */
@@ -1341,18 +1420,6 @@
#define EXT4_S_ERR_LEN (EXT4_S_ERR_END - EXT4_S_ERR_START)
#ifdef __KERNEL__
-
-/*
- * run-time mount flags
- */
-#define EXT4_MF_MNTDIR_SAMPLED 0x0001
-#define EXT4_MF_FS_ABORTED 0x0002 /* Fatal error detected */
-
-#ifdef CONFIG_FS_ENCRYPTION
-#define DUMMY_ENCRYPTION_ENABLED(sbi) ((sbi)->s_dummy_enc_ctx.ctx != NULL)
-#else
-#define DUMMY_ENCRYPTION_ENABLED(sbi) (0)
-#endif
/* Number of quota types we support */
#define EXT4_MAXQUOTAS 3
@@ -1382,7 +1449,7 @@
struct buffer_head * __rcu *s_group_desc;
unsigned int s_mount_opt;
unsigned int s_mount_opt2;
- unsigned int s_mount_flags;
+ unsigned long s_mount_flags;
unsigned int s_def_mount_opt;
ext4_fsblk_t s_sb_block;
atomic64_t s_resv_clusters;
@@ -1403,11 +1470,13 @@
struct percpu_counter s_freeinodes_counter;
struct percpu_counter s_dirs_counter;
struct percpu_counter s_dirtyclusters_counter;
+ struct percpu_counter s_sra_exceeded_retry_limit;
struct blockgroup_lock *s_blockgroup_lock;
struct proc_dir_entry *s_proc;
struct kobject s_kobj;
struct completion s_kobj_unregister;
struct super_block *s_sb;
+ struct buffer_head *s_mmp_bh;
/* Journaling */
struct journal_s *s_journal;
@@ -1417,14 +1486,14 @@
unsigned long s_commit_interval;
u32 s_max_batch_time;
u32 s_min_batch_time;
- struct block_device *journal_bdev;
+ struct block_device *s_journal_bdev;
#ifdef CONFIG_QUOTA
/* Names of quota files with journalled quota */
char __rcu *s_qf_names[EXT4_MAXQUOTAS];
int s_jquota_fmt; /* Format of quota to use */
#endif
unsigned int s_want_extra_isize; /* New inodes should reserve # bytes */
- struct ext4_system_blocks __rcu *system_blks;
+ struct ext4_system_blocks __rcu *s_system_blks;
#ifdef EXTENTS_STATS
/* ext4 extents stats */
@@ -1455,22 +1524,28 @@
unsigned int s_mb_stats;
unsigned int s_mb_order2_reqs;
unsigned int s_mb_group_prealloc;
+ unsigned int s_mb_max_inode_prealloc;
unsigned int s_max_dir_size_kb;
/* where last allocation was done - for stream allocation */
unsigned long s_mb_last_group;
unsigned long s_mb_last_start;
+ unsigned int s_mb_prefetch;
+ unsigned int s_mb_prefetch_limit;
/* stats for buddy allocator */
atomic_t s_bal_reqs; /* number of reqs with len > 1 */
atomic_t s_bal_success; /* we found long enough chunks */
atomic_t s_bal_allocated; /* in blocks */
atomic_t s_bal_ex_scanned; /* total extents scanned */
+ atomic_t s_bal_groups_scanned; /* number of groups scanned */
atomic_t s_bal_goals; /* goal hits */
atomic_t s_bal_breaks; /* too long searches */
atomic_t s_bal_2orders; /* 2^order hits */
- spinlock_t s_bal_lock;
- unsigned long s_mb_buddies_generated;
- unsigned long long s_mb_generation_time;
+ atomic64_t s_bal_cX_groups_considered[4];
+ atomic64_t s_bal_cX_hits[4];
+ atomic64_t s_bal_cX_failed[4]; /* cX loop didn't find blocks */
+ atomic_t s_mb_buddies_generated; /* number of buddies generated */
+ atomic64_t s_mb_generation_time;
atomic_t s_mb_lost_chunks;
atomic_t s_mb_preallocated;
atomic_t s_mb_discarded;
@@ -1505,7 +1580,7 @@
struct task_struct *s_mmp_tsk;
/* record the last minlen when FITRIM is called. */
- atomic_t s_last_trim_minblks;
+ unsigned long s_last_trim_minblks;
/* Reference to checksum algorithm driver via cryptoapi */
struct crypto_shash *s_chksum_driver;
@@ -1526,9 +1601,11 @@
struct ratelimit_state s_err_ratelimit_state;
struct ratelimit_state s_warning_ratelimit_state;
struct ratelimit_state s_msg_ratelimit_state;
+ atomic_t s_warning_count;
+ atomic_t s_msg_count;
- /* Encryption context for '-o test_dummy_encryption' */
- struct fscrypt_dummy_context s_dummy_enc_ctx;
+ /* Encryption policy for '-o test_dummy_encryption' */
+ struct fscrypt_dummy_policy s_dummy_enc_policy;
/*
* Barrier between writepages ops and changing any inode's JOURNAL_DATA
@@ -1536,6 +1613,40 @@
*/
struct percpu_rw_semaphore s_writepages_rwsem;
struct dax_device *s_daxdev;
+#ifdef CONFIG_EXT4_DEBUG
+ unsigned long s_simulate_fail;
+#endif
+ /* Record the errseq of the backing block device */
+ errseq_t s_bdev_wb_err;
+ spinlock_t s_bdev_wb_lock;
+
+ /* Ext4 fast commit stuff */
+ atomic_t s_fc_subtid;
+ atomic_t s_fc_ineligible_updates;
+ /*
+ * After commit starts, the main queue gets locked, and the further
+ * updates get added in the staging queue.
+ */
+#define FC_Q_MAIN 0
+#define FC_Q_STAGING 1
+ struct list_head s_fc_q[2]; /* Inodes staged for fast commit
+ * that have data changes in them.
+ */
+ struct list_head s_fc_dentry_q[2]; /* directory entry updates */
+ unsigned int s_fc_bytes;
+ /*
+ * Main fast commit lock. This lock protects accesses to the
+ * following fields:
+ * ei->i_fc_list, s_fc_dentry_q, s_fc_q, s_fc_bytes, s_fc_bh.
+ */
+ spinlock_t s_fc_lock;
+ struct buffer_head *s_fc_bh;
+ struct ext4_fc_stats s_fc_stats;
+ u64 s_fc_avg_commit_time;
+#ifdef CONFIG_EXT4_DEBUG
+ int s_fc_debug_max_replay;
+#endif
+ struct ext4_fc_replay_state s_fc_replay_state;
};
static inline struct ext4_sb_info *EXT4_SB(struct super_block *sb)
@@ -1572,6 +1683,94 @@
})
/*
+ * run-time mount flags
+ */
+enum {
+ EXT4_MF_MNTDIR_SAMPLED,
+ EXT4_MF_FS_ABORTED, /* Fatal error detected */
+ EXT4_MF_FC_INELIGIBLE, /* Fast commit ineligible */
+ EXT4_MF_FC_COMMITTING /* File system underoing a fast
+ * commit.
+ */
+};
+
+static inline void ext4_set_mount_flag(struct super_block *sb, int bit)
+{
+ set_bit(bit, &EXT4_SB(sb)->s_mount_flags);
+}
+
+static inline void ext4_clear_mount_flag(struct super_block *sb, int bit)
+{
+ clear_bit(bit, &EXT4_SB(sb)->s_mount_flags);
+}
+
+static inline int ext4_test_mount_flag(struct super_block *sb, int bit)
+{
+ return test_bit(bit, &EXT4_SB(sb)->s_mount_flags);
+}
+
+
+/*
+ * Simulate_fail codes
+ */
+#define EXT4_SIM_BBITMAP_EIO 1
+#define EXT4_SIM_BBITMAP_CRC 2
+#define EXT4_SIM_IBITMAP_EIO 3
+#define EXT4_SIM_IBITMAP_CRC 4
+#define EXT4_SIM_INODE_EIO 5
+#define EXT4_SIM_INODE_CRC 6
+#define EXT4_SIM_DIRBLOCK_EIO 7
+#define EXT4_SIM_DIRBLOCK_CRC 8
+
+static inline bool ext4_simulate_fail(struct super_block *sb,
+ unsigned long code)
+{
+#ifdef CONFIG_EXT4_DEBUG
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+
+ if (unlikely(sbi->s_simulate_fail == code)) {
+ sbi->s_simulate_fail = 0;
+ return true;
+ }
+#endif
+ return false;
+}
+
+static inline void ext4_simulate_fail_bh(struct super_block *sb,
+ struct buffer_head *bh,
+ unsigned long code)
+{
+ if (!IS_ERR(bh) && ext4_simulate_fail(sb, code))
+ clear_buffer_uptodate(bh);
+}
+
+/*
+ * Error number codes for s_{first,last}_error_errno
+ *
+ * Linux errno numbers are architecture specific, so we need to translate
+ * them into something which is architecture independent. We don't define
+ * codes for all errno's; just the ones which are most likely to be the cause
+ * of an ext4_error() call.
+ */
+#define EXT4_ERR_UNKNOWN 1
+#define EXT4_ERR_EIO 2
+#define EXT4_ERR_ENOMEM 3
+#define EXT4_ERR_EFSBADCRC 4
+#define EXT4_ERR_EFSCORRUPTED 5
+#define EXT4_ERR_ENOSPC 6
+#define EXT4_ERR_ENOKEY 7
+#define EXT4_ERR_EROFS 8
+#define EXT4_ERR_EFBIG 9
+#define EXT4_ERR_EEXIST 10
+#define EXT4_ERR_ERANGE 11
+#define EXT4_ERR_EOVERFLOW 12
+#define EXT4_ERR_EBUSY 13
+#define EXT4_ERR_ENOTDIR 14
+#define EXT4_ERR_ENOTEMPTY 15
+#define EXT4_ERR_ESHUTDOWN 16
+#define EXT4_ERR_EFAULT 17
+
+/*
* Inode dynamic state flags
*/
enum {
@@ -1581,12 +1780,12 @@
EXT4_STATE_NO_EXPAND, /* No space for expansion */
EXT4_STATE_DA_ALLOC_CLOSE, /* Alloc DA blks on close */
EXT4_STATE_EXT_MIGRATE, /* Inode is migrating */
- EXT4_STATE_DIO_UNWRITTEN, /* need convert on dio done*/
EXT4_STATE_NEWENTRY, /* File just added to dir */
EXT4_STATE_MAY_INLINE_DATA, /* may have in-inode data */
EXT4_STATE_EXT_PRECACHED, /* extents have been precached */
EXT4_STATE_LUSTRE_EA_INODE, /* Lustre-style ea_inode */
EXT4_STATE_VERITY_IN_PROGRESS, /* building fs-verity Merkle tree */
+ EXT4_STATE_FC_COMMITTING, /* Fast commit ongoing */
};
#define EXT4_INODE_BIT_FNS(name, field, offset) \
@@ -1665,6 +1864,10 @@
#define EXT4_GOOD_OLD_INODE_SIZE 128
+#define EXT4_EXTRA_TIMESTAMP_MAX (((s64)1 << 34) - 1 + S32_MIN)
+#define EXT4_NON_EXTRA_TIMESTAMP_MAX S32_MAX
+#define EXT4_TIMESTAMP_MIN S32_MIN
+
/*
* Feature set definitions
*/
@@ -1676,6 +1879,14 @@
#define EXT4_FEATURE_COMPAT_RESIZE_INODE 0x0010
#define EXT4_FEATURE_COMPAT_DIR_INDEX 0x0020
#define EXT4_FEATURE_COMPAT_SPARSE_SUPER2 0x0200
+/*
+ * The reason why "FAST_COMMIT" is a compat feature is that, FS becomes
+ * incompatible only if fast commit blocks are present in the FS. Since we
+ * clear the journal (and thus the fast commit blocks), we don't mark FS as
+ * incompatible. We also have a JBD2 incompat feature, which gets set when
+ * there are fast commit blocks present in the journal.
+ */
+#define EXT4_FEATURE_COMPAT_FAST_COMMIT 0x0400
#define EXT4_FEATURE_COMPAT_STABLE_INODES 0x0800
#define EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
@@ -1778,6 +1989,7 @@
EXT4_FEATURE_COMPAT_FUNCS(resize_inode, RESIZE_INODE)
EXT4_FEATURE_COMPAT_FUNCS(dir_index, DIR_INDEX)
EXT4_FEATURE_COMPAT_FUNCS(sparse_super2, SPARSE_SUPER2)
+EXT4_FEATURE_COMPAT_FUNCS(fast_commit, FAST_COMMIT)
EXT4_FEATURE_COMPAT_FUNCS(stable_inodes, STABLE_INODES)
EXT4_FEATURE_RO_COMPAT_FUNCS(sparse_super, SPARSE_SUPER)
@@ -1892,6 +2104,7 @@
*/
#define EXT4_FLAGS_RESIZING 0
#define EXT4_FLAGS_SHUTDOWN 1
+#define EXT4_FLAGS_BDEV_IS_DAX 2
static inline int ext4_forced_shutdown(struct ext4_sb_info *sbi)
{
@@ -1945,6 +2158,10 @@
* Structure of a directory entry
*/
#define EXT4_NAME_LEN 255
+/*
+ * Base length of the ext4 directory entry excluding the name length
+ */
+#define EXT4_BASE_DIR_LEN (sizeof(struct ext4_dir_entry_2) - EXT4_NAME_LEN)
struct ext4_dir_entry {
__le32 inode; /* Inode number */
@@ -1974,7 +2191,7 @@
__le32 inode; /* Inode number */
__le16 rec_len; /* Directory entry length */
__u8 name_len; /* Name length */
- __u8 file_type;
+ __u8 file_type; /* See file type macros EXT4_FT_* below */
char name[EXT4_NAME_LEN]; /* File name */
};
@@ -2122,7 +2339,6 @@
BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver)!=sizeof(desc.ctx));
desc.shash.tfm = sbi->s_chksum_driver;
- desc.shash.flags = 0;
*(u32 *)desc.ctx = crc;
BUG_ON(crypto_shash_update(&desc.shash, address, length));
@@ -2244,9 +2460,15 @@
struct mutex li_list_mtx;
};
+enum ext4_li_mode {
+ EXT4_LI_MODE_PREFETCH_BBITMAP,
+ EXT4_LI_MODE_ITABLE,
+};
+
struct ext4_li_request {
struct super_block *lr_super;
- struct ext4_sb_info *lr_sbi;
+ enum ext4_li_mode lr_mode;
+ ext4_group_t lr_first_not_zeroed;
ext4_group_t lr_next_group;
struct list_head lr_request;
unsigned long lr_next_sched;
@@ -2374,10 +2596,13 @@
extern struct ext4_group_desc * ext4_get_group_desc(struct super_block * sb,
ext4_group_t block_group,
struct buffer_head ** bh);
+extern struct ext4_group_info *ext4_get_group_info(struct super_block *sb,
+ ext4_group_t group);
extern int ext4_should_retry_alloc(struct super_block *sb, int *retries);
extern struct buffer_head *ext4_read_block_bitmap_nowait(struct super_block *sb,
- ext4_group_t block_group);
+ ext4_group_t block_group,
+ bool ignore_locked);
extern int ext4_wait_block_bitmap(struct super_block *sb,
ext4_group_t block_group,
struct buffer_head *bh);
@@ -2551,6 +2776,7 @@
struct dx_hash_info *hinfo);
/* ialloc.c */
+extern int ext4_mark_inode_used(struct super_block *sb, int ino);
extern struct inode *__ext4_new_inode(handle_t *, struct inode *, umode_t,
const struct qstr *qstr, __u32 goal,
uid_t *owner, __u32 i_flags,
@@ -2576,18 +2802,56 @@
ext4_group_t group, int barrier);
extern void ext4_end_bitmap_read(struct buffer_head *bh, int uptodate);
+/* fast_commit.c */
+int ext4_fc_info_show(struct seq_file *seq, void *v);
+void ext4_fc_init(struct super_block *sb, journal_t *journal);
+void ext4_fc_init_inode(struct inode *inode);
+void ext4_fc_track_range(handle_t *handle, struct inode *inode, ext4_lblk_t start,
+ ext4_lblk_t end);
+void __ext4_fc_track_unlink(handle_t *handle, struct inode *inode,
+ struct dentry *dentry);
+void __ext4_fc_track_link(handle_t *handle, struct inode *inode,
+ struct dentry *dentry);
+void ext4_fc_track_unlink(handle_t *handle, struct dentry *dentry);
+void ext4_fc_track_link(handle_t *handle, struct dentry *dentry);
+void __ext4_fc_track_create(handle_t *handle, struct inode *inode,
+ struct dentry *dentry);
+void ext4_fc_track_create(handle_t *handle, struct dentry *dentry);
+void ext4_fc_track_inode(handle_t *handle, struct inode *inode);
+void ext4_fc_mark_ineligible(struct super_block *sb, int reason);
+void ext4_fc_start_ineligible(struct super_block *sb, int reason);
+void ext4_fc_stop_ineligible(struct super_block *sb);
+void ext4_fc_start_update(struct inode *inode);
+void ext4_fc_stop_update(struct inode *inode);
+void ext4_fc_del(struct inode *inode);
+bool ext4_fc_replay_check_excluded(struct super_block *sb, ext4_fsblk_t block);
+void ext4_fc_replay_cleanup(struct super_block *sb);
+int ext4_fc_commit(journal_t *journal, tid_t commit_tid);
+int __init ext4_fc_init_dentry_cache(void);
+void ext4_fc_destroy_dentry_cache(void);
+int ext4_fc_record_regions(struct super_block *sb, int ino,
+ ext4_lblk_t lblk, ext4_fsblk_t pblk,
+ int len, int replay);
+
/* mballoc.c */
extern const struct seq_operations ext4_mb_seq_groups_ops;
extern long ext4_mb_stats;
extern long ext4_mb_max_to_scan;
+extern int ext4_seq_mb_stats_show(struct seq_file *seq, void *offset);
extern int ext4_mb_init(struct super_block *);
extern int ext4_mb_release(struct super_block *);
extern ext4_fsblk_t ext4_mb_new_blocks(handle_t *,
struct ext4_allocation_request *, int *);
extern int ext4_mb_reserve_blocks(struct super_block *, int);
-extern void ext4_discard_preallocations(struct inode *);
+extern void ext4_discard_preallocations(struct inode *, unsigned int);
extern int __init ext4_init_mballoc(void);
extern void ext4_exit_mballoc(void);
+extern ext4_group_t ext4_mb_prefetch(struct super_block *sb,
+ ext4_group_t group,
+ unsigned int nr, int *cnt);
+extern void ext4_mb_prefetch_fini(struct super_block *sb, ext4_group_t group,
+ unsigned int nr);
+
extern void ext4_free_blocks(handle_t *handle, struct inode *inode,
struct buffer_head *bh, ext4_fsblk_t block,
unsigned long count, int flags);
@@ -2599,8 +2863,12 @@
ext4_fsblk_t block, unsigned long count);
extern int ext4_trim_fs(struct super_block *, struct fstrim_range *);
extern void ext4_process_freed_data(struct super_block *sb, tid_t commit_tid);
+extern void ext4_mb_mark_bb(struct super_block *sb, ext4_fsblk_t block,
+ int len, int state);
/* inode.c */
+void ext4_inode_csum_set(struct inode *inode, struct ext4_inode *raw,
+ struct ext4_inode_info *ei);
int ext4_inode_is_fast_symlink(struct inode *inode);
struct buffer_head *ext4_getblk(handle_t *, struct inode *, ext4_lblk_t, int);
struct buffer_head *ext4_bread(handle_t *, struct inode *, ext4_lblk_t, int);
@@ -2610,8 +2878,6 @@
struct buffer_head *bh_result, int create);
int ext4_get_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create);
-int ext4_dio_get_block(struct inode *inode, sector_t iblock,
- struct buffer_head *bh_result, int create);
int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
struct buffer_head *bh, int create);
int ext4_walk_page_buffers(handle_t *handle,
@@ -2629,7 +2895,9 @@
typedef enum {
EXT4_IGET_NORMAL = 0,
EXT4_IGET_SPECIAL = 0x0001, /* OK to iget a system inode */
- EXT4_IGET_HANDLE = 0x0002 /* Inode # is from a handle */
+ EXT4_IGET_HANDLE = 0x0002, /* Inode # is from a handle */
+ EXT4_IGET_BAD = 0x0004, /* Allow to iget a bad inode */
+ EXT4_IGET_EA_INODE = 0x0008 /* Inode should contain an EA value */
} ext4_iget_flags;
extern struct inode *__ext4_iget(struct super_block *sb, unsigned long ino,
@@ -2649,23 +2917,25 @@
extern void ext4_dirty_inode(struct inode *, int);
extern int ext4_change_inode_journal_flag(struct inode *, int);
extern int ext4_get_inode_loc(struct inode *, struct ext4_iloc *);
+extern int ext4_get_fc_inode_loc(struct super_block *sb, unsigned long ino,
+ struct ext4_iloc *iloc);
extern int ext4_inode_attach_jinode(struct inode *inode);
extern int ext4_can_truncate(struct inode *inode);
extern int ext4_truncate(struct inode *);
extern int ext4_break_layouts(struct inode *);
-extern int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length);
-extern int ext4_truncate_restart_trans(handle_t *, struct inode *, int nblocks);
-extern void ext4_set_inode_flags(struct inode *);
+extern int ext4_punch_hole(struct file *file, loff_t offset, loff_t length);
+extern void ext4_set_inode_flags(struct inode *, bool init);
extern int ext4_alloc_da_blocks(struct inode *inode);
extern void ext4_set_aops(struct inode *inode);
extern int ext4_writepage_trans_blocks(struct inode *);
extern int ext4_chunk_trans_blocks(struct inode *, int nrblocks);
extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode,
loff_t lstart, loff_t lend);
-extern int ext4_page_mkwrite(struct vm_fault *vmf);
-extern int ext4_filemap_fault(struct vm_fault *vmf);
+extern vm_fault_t ext4_page_mkwrite(struct vm_fault *vmf);
+extern vm_fault_t ext4_filemap_fault(struct vm_fault *vmf);
extern qsize_t *ext4_get_reserved_space(struct inode *inode);
extern int ext4_get_projid(struct inode *inode, kprojid_t *projid);
+extern void ext4_da_release_space(struct inode *inode, int to_free);
extern void ext4_da_update_reserve_space(struct inode *inode,
int used, int quota_claim);
extern int ext4_issue_zeroout(struct inode *inode, ext4_lblk_t lblk,
@@ -2674,7 +2944,6 @@
/* indirect.c */
extern int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
struct ext4_map_blocks *map, int flags);
-extern int ext4_ind_calc_metadata_amount(struct inode *inode, sector_t lblock);
extern int ext4_ind_trans_blocks(struct inode *inode, int nrblocks);
extern void ext4_ind_truncate(handle_t *, struct inode *inode);
extern int ext4_ind_remove_space(handle_t *handle, struct inode *inode,
@@ -2683,14 +2952,17 @@
/* ioctl.c */
extern long ext4_ioctl(struct file *, unsigned int, unsigned long);
extern long ext4_compat_ioctl(struct file *, unsigned int, unsigned long);
+extern void ext4_reset_inode_seed(struct inode *inode);
/* migrate.c */
extern int ext4_ext_migrate(struct inode *);
extern int ext4_ind_migrate(struct inode *inode);
/* namei.c */
-extern int ext4_dirent_csum_verify(struct inode *inode,
- struct ext4_dir_entry *dirent);
+extern int ext4_init_new_dir(handle_t *handle, struct inode *dir,
+ struct inode *inode);
+extern int ext4_dirblock_csum_verify(struct inode *inode,
+ struct buffer_head *bh);
extern int ext4_orphan_add(handle_t *, struct inode *);
extern int ext4_orphan_del(handle_t *, struct inode *);
extern int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash,
@@ -2702,8 +2974,7 @@
struct ext4_filename *fname,
ext4_lblk_t lblk, unsigned int offset,
struct ext4_dir_entry_2 **res_dir);
-extern int ext4_generic_delete_entry(handle_t *handle,
- struct inode *dir,
+extern int ext4_generic_delete_entry(struct inode *dir,
struct ext4_dir_entry_2 *de_del,
ext4_lblk_t lblk,
struct buffer_head *bh,
@@ -2724,11 +2995,17 @@
/* super.c */
extern struct buffer_head *ext4_sb_bread(struct super_block *sb,
sector_t block, int op_flags);
+extern struct buffer_head *ext4_sb_bread_unmovable(struct super_block *sb,
+ sector_t block);
+extern void ext4_read_bh_nowait(struct buffer_head *bh, int op_flags,
+ bh_end_io_t *end_io);
+extern int ext4_read_bh(struct buffer_head *bh, int op_flags,
+ bh_end_io_t *end_io);
+extern int ext4_read_bh_lock(struct buffer_head *bh, int op_flags, bool wait);
+extern void ext4_sb_breadahead_unmovable(struct super_block *sb, sector_t block);
extern int ext4_seq_options_show(struct seq_file *seq, void *offset);
extern int ext4_calculate_overhead(struct super_block *sb);
extern void ext4_superblock_csum_set(struct super_block *sb);
-extern void *ext4_kvmalloc(size_t size, gfp_t flags);
-extern void *ext4_kvzalloc(size_t size, gfp_t flags);
extern int ext4_alloc_flex_bg_array(struct super_block *sb,
ext4_group_t ngroup);
extern const char *ext4_decode_error(struct super_block *sb, int errno,
@@ -2736,20 +3013,22 @@
extern void ext4_mark_group_bitmap_corrupted(struct super_block *sb,
ext4_group_t block_group,
unsigned int flags);
+extern unsigned int ext4_num_base_meta_blocks(struct super_block *sb,
+ ext4_group_t block_group);
-extern __printf(4, 5)
-void __ext4_error(struct super_block *, const char *, unsigned int,
+extern __printf(6, 7)
+void __ext4_error(struct super_block *, const char *, unsigned int, int, __u64,
const char *, ...);
-extern __printf(5, 6)
-void __ext4_error_inode(struct inode *, const char *, unsigned int, ext4_fsblk_t,
- const char *, ...);
+extern __printf(6, 7)
+void __ext4_error_inode(struct inode *, const char *, unsigned int,
+ ext4_fsblk_t, int, const char *, ...);
extern __printf(5, 6)
void __ext4_error_file(struct file *, const char *, unsigned int, ext4_fsblk_t,
const char *, ...);
extern void __ext4_std_error(struct super_block *, const char *,
unsigned int, int);
-extern __printf(4, 5)
-void __ext4_abort(struct super_block *, const char *, unsigned int,
+extern __printf(5, 6)
+void __ext4_abort(struct super_block *, const char *, unsigned int, int,
const char *, ...);
extern __printf(4, 5)
void __ext4_warning(struct super_block *, const char *, unsigned int,
@@ -2770,8 +3049,12 @@
#define EXT4_ERROR_INODE(inode, fmt, a...) \
ext4_error_inode((inode), __func__, __LINE__, 0, (fmt), ## a)
-#define EXT4_ERROR_INODE_BLOCK(inode, block, fmt, a...) \
- ext4_error_inode((inode), __func__, __LINE__, (block), (fmt), ## a)
+#define EXT4_ERROR_INODE_ERR(inode, err, fmt, a...) \
+ __ext4_error_inode((inode), __func__, __LINE__, 0, (err), (fmt), ## a)
+
+#define ext4_error_inode_block(inode, block, err, fmt, a...) \
+ __ext4_error_inode((inode), __func__, __LINE__, (block), (err), \
+ (fmt), ## a)
#define EXT4_ERROR_FILE(file, block, fmt, a...) \
ext4_error_file((file), __func__, __LINE__, (block), (fmt), ## a)
@@ -2779,13 +3062,18 @@
#ifdef CONFIG_PRINTK
#define ext4_error_inode(inode, func, line, block, fmt, ...) \
- __ext4_error_inode(inode, func, line, block, fmt, ##__VA_ARGS__)
+ __ext4_error_inode(inode, func, line, block, 0, fmt, ##__VA_ARGS__)
+#define ext4_error_inode_err(inode, func, line, block, err, fmt, ...) \
+ __ext4_error_inode((inode), (func), (line), (block), \
+ (err), (fmt), ##__VA_ARGS__)
#define ext4_error_file(file, func, line, block, fmt, ...) \
__ext4_error_file(file, func, line, block, fmt, ##__VA_ARGS__)
#define ext4_error(sb, fmt, ...) \
- __ext4_error(sb, __func__, __LINE__, fmt, ##__VA_ARGS__)
-#define ext4_abort(sb, fmt, ...) \
- __ext4_abort(sb, __func__, __LINE__, fmt, ##__VA_ARGS__)
+ __ext4_error((sb), __func__, __LINE__, 0, 0, (fmt), ##__VA_ARGS__)
+#define ext4_error_err(sb, err, fmt, ...) \
+ __ext4_error((sb), __func__, __LINE__, (err), 0, (fmt), ##__VA_ARGS__)
+#define ext4_abort(sb, err, fmt, ...) \
+ __ext4_abort((sb), __func__, __LINE__, (err), (fmt), ##__VA_ARGS__)
#define ext4_warning(sb, fmt, ...) \
__ext4_warning(sb, __func__, __LINE__, fmt, ##__VA_ARGS__)
#define ext4_warning_inode(inode, fmt, ...) \
@@ -2803,7 +3091,12 @@
#define ext4_error_inode(inode, func, line, block, fmt, ...) \
do { \
no_printk(fmt, ##__VA_ARGS__); \
- __ext4_error_inode(inode, "", 0, block, " "); \
+ __ext4_error_inode(inode, "", 0, block, 0, " "); \
+} while (0)
+#define ext4_error_inode_err(inode, func, line, block, err, fmt, ...) \
+do { \
+ no_printk(fmt, ##__VA_ARGS__); \
+ __ext4_error_inode(inode, "", 0, block, err, " "); \
} while (0)
#define ext4_error_file(file, func, line, block, fmt, ...) \
do { \
@@ -2813,12 +3106,17 @@
#define ext4_error(sb, fmt, ...) \
do { \
no_printk(fmt, ##__VA_ARGS__); \
- __ext4_error(sb, "", 0, " "); \
+ __ext4_error(sb, "", 0, 0, 0, " "); \
} while (0)
-#define ext4_abort(sb, fmt, ...) \
+#define ext4_error_err(sb, err, fmt, ...) \
do { \
no_printk(fmt, ##__VA_ARGS__); \
- __ext4_abort(sb, "", 0, " "); \
+ __ext4_error(sb, "", 0, err, 0, " "); \
+} while (0)
+#define ext4_abort(sb, err, fmt, ...) \
+do { \
+ no_printk(fmt, ##__VA_ARGS__); \
+ __ext4_abort(sb, "", 0, err, " "); \
} while (0)
#define ext4_warning(sb, fmt, ...) \
do { \
@@ -2845,12 +3143,6 @@
#endif
-extern int ext4_update_compat_feature(handle_t *handle, struct super_block *sb,
- __u32 compat);
-extern int ext4_update_rocompat_feature(handle_t *handle,
- struct super_block *sb, __u32 rocompat);
-extern int ext4_update_incompat_feature(handle_t *handle,
- struct super_block *sb, __u32 incompat);
extern ext4_fsblk_t ext4_block_bitmap(struct super_block *sb,
struct ext4_group_desc *bg);
extern ext4_fsblk_t ext4_inode_bitmap(struct super_block *sb,
@@ -2901,22 +3193,24 @@
return ext4_has_feature_gdt_csum(sb) || ext4_has_metadata_csum(sb);
}
+#define ext4_read_incompat_64bit_val(es, name) \
+ (((es)->s_feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_64BIT) \
+ ? (ext4_fsblk_t)le32_to_cpu(es->name##_hi) << 32 : 0) | \
+ le32_to_cpu(es->name##_lo))
+
static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es)
{
- return ((ext4_fsblk_t)le32_to_cpu(es->s_blocks_count_hi) << 32) |
- le32_to_cpu(es->s_blocks_count_lo);
+ return ext4_read_incompat_64bit_val(es, s_blocks_count);
}
static inline ext4_fsblk_t ext4_r_blocks_count(struct ext4_super_block *es)
{
- return ((ext4_fsblk_t)le32_to_cpu(es->s_r_blocks_count_hi) << 32) |
- le32_to_cpu(es->s_r_blocks_count_lo);
+ return ext4_read_incompat_64bit_val(es, s_r_blocks_count);
}
static inline ext4_fsblk_t ext4_free_blocks_count(struct ext4_super_block *es)
{
- return ((ext4_fsblk_t)le32_to_cpu(es->s_free_blocks_count_hi) << 32) |
- le32_to_cpu(es->s_free_blocks_count_lo);
+ return ext4_read_incompat_64bit_val(es, s_free_blocks_count);
}
static inline void ext4_blocks_count_set(struct ext4_super_block *es,
@@ -2955,19 +3249,6 @@
{
raw_inode->i_size_lo = cpu_to_le32(i_size);
raw_inode->i_size_high = cpu_to_le32(i_size >> 32);
-}
-
-static inline
-struct ext4_group_info *ext4_get_group_info(struct super_block *sb,
- ext4_group_t group)
-{
- struct ext4_group_info **grp_info;
- long indexv, indexh;
- BUG_ON(group >= EXT4_SB(sb)->s_groups_count);
- indexv = group >> (EXT4_DESC_PER_BLOCK_BITS(sb));
- indexh = group & ((EXT4_DESC_PER_BLOCK(sb)) - 1);
- grp_info = sbi_array_rcu_deref(EXT4_SB(sb), s_group_info, indexv);
- return grp_info[indexh];
}
/*
@@ -3042,6 +3323,9 @@
struct ext4_group_info {
unsigned long bb_state;
+#ifdef AGGRESSIVE_CHECK
+ unsigned long bb_check_counter;
+#endif
struct rb_root bb_free_root;
ext4_grpblk_t bb_first_free; /* first free block */
ext4_grpblk_t bb_free; /* total free blocks */
@@ -3066,6 +3350,7 @@
(1 << EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT)
#define EXT4_GROUP_INFO_IBITMAP_CORRUPT \
(1 << EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT)
+#define EXT4_GROUP_INFO_BBITMAP_READ_BIT 4
#define EXT4_MB_GRP_NEED_INIT(grp) \
(test_bit(EXT4_GROUP_INFO_NEED_INIT_BIT, &((grp)->bb_state)))
@@ -3080,6 +3365,8 @@
(set_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state)))
#define EXT4_MB_GRP_CLEAR_TRIMMED(grp) \
(clear_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state)))
+#define EXT4_MB_GRP_TEST_AND_SET_READ(grp) \
+ (test_and_set_bit(EXT4_GROUP_INFO_BBITMAP_READ_BIT, &((grp)->bb_state)))
#define EXT4_MAX_CONTENTION 8
#define EXT4_CONTENTION_THRESHOLD 2
@@ -3145,10 +3432,6 @@
/* dir.c */
extern const struct file_operations ext4_dir_operations;
-#ifdef CONFIG_UNICODE
-extern const struct dentry_operations ext4_dentry_ops;
-#endif
-
/* file.c */
extern const struct inode_operations ext4_file_inode_operations;
extern const struct file_operations ext4_file_operations;
@@ -3193,11 +3476,11 @@
extern int ext4_read_inline_dir(struct file *filp,
struct dir_context *ctx,
int *has_inline_data);
-extern int htree_inlinedir_to_tree(struct file *dir_file,
- struct inode *dir, ext4_lblk_t block,
- struct dx_hash_info *hinfo,
- __u32 start_hash, __u32 start_minor_hash,
- int *has_inline_data);
+extern int ext4_inlinedir_to_tree(struct file *dir_file,
+ struct inode *dir, ext4_lblk_t block,
+ struct dx_hash_info *hinfo,
+ __u32 start_hash, __u32 start_minor_hash,
+ int *has_inline_data);
extern struct buffer_head *ext4_find_inline_entry(struct inode *dir,
struct ext4_filename *fname,
struct ext4_dir_entry_2 **res_dir,
@@ -3236,11 +3519,14 @@
struct ext4_dir_entry_2 *de,
int blocksize, int csum_size,
unsigned int parent_ino, int dotdot_real_len);
-extern void initialize_dirent_tail(struct ext4_dir_entry_tail *t,
- unsigned int blocksize);
-extern int ext4_handle_dirty_dirent_node(handle_t *handle,
- struct inode *inode,
- struct buffer_head *bh);
+extern void ext4_initialize_dirent_tail(struct buffer_head *bh,
+ unsigned int blocksize);
+extern int ext4_handle_dirty_dirblock(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh);
+extern int __ext4_unlink(struct inode *dir, const struct qstr *d_name,
+ struct inode *inode, struct dentry *dentry);
+extern int __ext4_link(struct inode *dir, struct inode *inode,
+ struct dentry *dentry);
#define S_SHIFT 12
static const unsigned char ext4_type_by_mode[(S_IFMT >> S_SHIFT) + 1] = {
@@ -3261,9 +3547,8 @@
}
/* readpages.c */
-extern int ext4_mpage_readpages(struct address_space *mapping,
- struct list_head *pages, struct page *page,
- unsigned nr_pages, bool is_readahead);
+extern int ext4_mpage_readpages(struct inode *inode,
+ struct readahead_control *rac, struct page *page);
extern int __init ext4_init_post_read_processing(void);
extern void ext4_exit_post_read_processing(void);
@@ -3288,6 +3573,9 @@
unsigned int count);
extern int ext4_check_blockref(const char *, unsigned int,
struct inode *, __le32 *, unsigned int);
+extern int ext4_sb_block_valid(struct super_block *sb, struct inode *inode,
+ ext4_fsblk_t start_blk, unsigned int count);
+
/* extents.c */
struct ext4_ext_path;
@@ -3299,8 +3587,7 @@
*/
#define EXT_MAX_BLOCKS 0xffffffff
-extern int ext4_ext_tree_init(handle_t *handle, struct inode *);
-extern int ext4_ext_writepage_trans_blocks(struct inode *, int);
+extern void ext4_ext_tree_init(handle_t *handle, struct inode *inode);
extern int ext4_ext_index_trans_blocks(struct inode *inode, int extents);
extern int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
struct ext4_map_blocks *map, int flags);
@@ -3313,16 +3600,13 @@
loff_t len);
extern int ext4_convert_unwritten_extents(handle_t *handle, struct inode *inode,
loff_t offset, ssize_t len);
+extern int ext4_convert_unwritten_io_end_vec(handle_t *handle,
+ ext4_io_end_t *io_end);
extern int ext4_map_blocks(handle_t *handle, struct inode *inode,
struct ext4_map_blocks *map, int flags);
-extern int ext4_ext_calc_metadata_amount(struct inode *inode,
- ext4_lblk_t lblocks);
extern int ext4_ext_calc_credits_for_single_extent(struct inode *inode,
int num,
struct ext4_ext_path *path);
-extern int ext4_can_extents_be_merged(struct inode *inode,
- struct ext4_extent *ex1,
- struct ext4_extent *ex2);
extern int ext4_ext_insert_extent(handle_t *, struct inode *,
struct ext4_ext_path **,
struct ext4_extent *, int);
@@ -3331,20 +3615,27 @@
int flags);
extern void ext4_ext_drop_refs(struct ext4_ext_path *);
extern int ext4_ext_check_inode(struct inode *inode);
-extern int ext4_find_delalloc_range(struct inode *inode,
- ext4_lblk_t lblk_start,
- ext4_lblk_t lblk_end);
-extern int ext4_find_delalloc_cluster(struct inode *inode, ext4_lblk_t lblk);
extern ext4_lblk_t ext4_ext_next_allocated_block(struct ext4_ext_path *path);
extern int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
__u64 start, __u64 len);
+extern int ext4_get_es_cache(struct inode *inode,
+ struct fiemap_extent_info *fieinfo,
+ __u64 start, __u64 len);
extern int ext4_ext_precache(struct inode *inode);
-extern int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len);
-extern int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len);
extern int ext4_swap_extents(handle_t *handle, struct inode *inode1,
struct inode *inode2, ext4_lblk_t lblk1,
ext4_lblk_t lblk2, ext4_lblk_t count,
int mark_unwritten,int *err);
+extern int ext4_clu_mapped(struct inode *inode, ext4_lblk_t lclu);
+extern int ext4_datasem_ensure_credits(handle_t *handle, struct inode *inode,
+ int check_cred, int restart_cred,
+ int revoke_cred);
+extern void ext4_ext_replay_shrink_inode(struct inode *inode, ext4_lblk_t end);
+extern int ext4_ext_replay_set_iblocks(struct inode *inode);
+extern int ext4_ext_replay_update_ex(struct inode *inode, ext4_lblk_t start,
+ int len, int unwritten, ext4_fsblk_t pblk);
+extern int ext4_ext_clear_bb(struct inode *inode);
+
/* move_extent.c */
extern void ext4_double_down_write_data_sem(struct inode *first,
@@ -3371,9 +3662,14 @@
int len,
struct writeback_control *wbc,
bool keep_towrite);
+extern struct ext4_io_end_vec *ext4_alloc_io_end_vec(ext4_io_end_t *io_end);
+extern struct ext4_io_end_vec *ext4_last_io_end_vec(ext4_io_end_t *io_end);
/* mmp.c */
extern int ext4_multi_mount_protect(struct super_block *, ext4_fsblk_t);
+
+/* mmp.c */
+extern void ext4_stop_mmpd(struct ext4_sb_info *sbi);
/* verity.c */
extern const struct fsverity_operations ext4_verityops;
@@ -3428,6 +3724,21 @@
}
extern const struct iomap_ops ext4_iomap_ops;
+extern const struct iomap_ops ext4_iomap_overwrite_ops;
+extern const struct iomap_ops ext4_iomap_report_ops;
+
+static inline int ext4_buffer_uptodate(struct buffer_head *bh)
+{
+ /*
+ * If the buffer has the write error flag, we have failed
+ * to write out data in the block. In this case, we don't
+ * have to read the block because we may read the old data
+ * successfully.
+ */
+ if (!buffer_uptodate(bh) && buffer_write_io_error(bh))
+ set_buffer_uptodate(bh);
+ return buffer_uptodate(bh);
+}
#endif /* __KERNEL__ */
--
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