From 6778948f9de86c3cfaf36725a7c87dcff9ba247f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 08:20:59 +0000
Subject: [PATCH] kernel_5.10 no rt
---
kernel/include/linux/shmem_fs.h | 41 +++++++++++++++++++----------------------
1 files changed, 19 insertions(+), 22 deletions(-)
diff --git a/kernel/include/linux/shmem_fs.h b/kernel/include/linux/shmem_fs.h
index f155dc6..1bf2615 100644
--- a/kernel/include/linux/shmem_fs.h
+++ b/kernel/include/linux/shmem_fs.h
@@ -8,6 +8,7 @@
#include <linux/pagemap.h>
#include <linux/percpu_counter.h>
#include <linux/xattr.h>
+#include <linux/fs_parser.h>
/* inode in-kernel data */
@@ -21,6 +22,7 @@
struct list_head swaplist; /* chain of maybes on swap */
struct shared_policy policy; /* NUMA memory alloc policy */
struct simple_xattrs xattrs; /* list of xattrs */
+ atomic_t stop_eviction; /* hold when working on inode */
struct inode vfs_inode;
};
@@ -34,6 +36,9 @@
unsigned char huge; /* Whether to try for hugepages */
kuid_t uid; /* Mount uid for root directory */
kgid_t gid; /* Mount gid for root directory */
+ bool full_inums; /* If i_ino should be uint or ino_t */
+ ino_t next_ino; /* The next per-sb inode number to use */
+ ino_t __percpu *ino_batch; /* The next per-cpu inode number to use */
struct mempolicy *mpol; /* default memory policy for mappings */
spinlock_t shrinklist_lock; /* Protects shrinklist */
struct list_head shrinklist; /* List of shinkable inodes */
@@ -48,8 +53,9 @@
/*
* Functions in mm/shmem.c called directly from elsewhere:
*/
+extern const struct fs_parameter_spec shmem_fs_parameters[];
extern int shmem_init(void);
-extern int shmem_fill_super(struct super_block *sb, void *data, int silent);
+extern int shmem_init_fs_context(struct fs_context *fc);
extern struct file *shmem_file_setup(const char *name,
loff_t size, unsigned long flags);
extern struct file *shmem_kernel_file_setup(const char *name, loff_t size,
@@ -72,11 +78,14 @@
extern struct page *shmem_read_mapping_page_gfp(struct address_space *mapping,
pgoff_t index, gfp_t gfp_mask);
extern void shmem_truncate_range(struct inode *inode, loff_t start, loff_t end);
-extern int shmem_unuse(swp_entry_t entry, struct page *page);
+extern int shmem_unuse(unsigned int type, bool frontswap,
+ unsigned long *fs_pages_to_unuse);
+extern bool shmem_huge_enabled(struct vm_area_struct *vma);
extern unsigned long shmem_swap_usage(struct vm_area_struct *vma);
extern unsigned long shmem_partial_swap_usage(struct address_space *mapping,
pgoff_t start, pgoff_t end);
+extern void shmem_mark_page_lazyfree(struct page *page, bool tail);
/* Flag allocation requirements to shmem_getpage */
enum sgp_type {
@@ -110,30 +119,18 @@
extern bool shmem_charge(struct inode *inode, long pages);
extern void shmem_uncharge(struct inode *inode, long pages);
-#ifdef CONFIG_TRANSPARENT_HUGE_PAGECACHE
-extern bool shmem_huge_enabled(struct vm_area_struct *vma);
-#else
-static inline bool shmem_huge_enabled(struct vm_area_struct *vma)
-{
- return false;
-}
-#endif
-
+#ifdef CONFIG_USERFAULTFD
#ifdef CONFIG_SHMEM
-extern int shmem_mcopy_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
+extern int shmem_mfill_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
struct vm_area_struct *dst_vma,
unsigned long dst_addr,
unsigned long src_addr,
+ bool zeropage,
struct page **pagep);
-extern int shmem_mfill_zeropage_pte(struct mm_struct *dst_mm,
- pmd_t *dst_pmd,
- struct vm_area_struct *dst_vma,
- unsigned long dst_addr);
-#else
-#define shmem_mcopy_atomic_pte(dst_mm, dst_pte, dst_vma, dst_addr, \
- src_addr, pagep) ({ BUG(); 0; })
-#define shmem_mfill_zeropage_pte(dst_mm, dst_pmd, dst_vma, \
- dst_addr) ({ BUG(); 0; })
-#endif
+#else /* !CONFIG_SHMEM */
+#define shmem_mfill_atomic_pte(dst_mm, dst_pmd, dst_vma, dst_addr, \
+ src_addr, zeropage, pagep) ({ BUG(); 0; })
+#endif /* CONFIG_SHMEM */
+#endif /* CONFIG_USERFAULTFD */
#endif
--
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