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| author | Chao Yu <chao@kernel.org> | 2021-08-09 02:24:48 +0200 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2021-08-17 20:59:05 +0200 |
| commit | 324105775c1982aacbd2972b7024d8cc06474abe (patch) | |
| tree | aed4271a090d9f97d9e3f9005c375b04ea523393 /fs/f2fs/f2fs.h | |
| parent | f2fs: compress: allow write compress released file after truncate to zero (diff) | |
| download | linux-324105775c1982aacbd2972b7024d8cc06474abe.tar.xz linux-324105775c1982aacbd2972b7024d8cc06474abe.zip | |
f2fs: support fault injection for f2fs_kmem_cache_alloc()
This patch supports to inject fault into f2fs_kmem_cache_alloc().
Usage:
a) echo 32768 > /sys/fs/f2fs/<dev>/inject_type or
b) mount -o fault_type=32768 <dev> <mountpoint>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index e97b4d8c5efc..13a7cfe9b23f 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -53,6 +53,7 @@ enum { FAULT_CHECKPOINT, FAULT_DISCARD, FAULT_WRITE_IO, + FAULT_SLAB_ALLOC, FAULT_MAX, }; @@ -2618,7 +2619,7 @@ static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); } -static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, +static inline void *f2fs_kmem_cache_alloc_nofail(struct kmem_cache *cachep, gfp_t flags) { void *entry; @@ -2629,6 +2630,20 @@ static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, return entry; } +static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, + gfp_t flags, bool nofail, struct f2fs_sb_info *sbi) +{ + if (nofail) + return f2fs_kmem_cache_alloc_nofail(cachep, flags); + + if (time_to_inject(sbi, FAULT_SLAB_ALLOC)) { + f2fs_show_injection_info(sbi, FAULT_SLAB_ALLOC); + return NULL; + } + + return kmem_cache_alloc(cachep, flags); +} + static inline bool is_inflight_io(struct f2fs_sb_info *sbi, int type) { if (get_pages(sbi, F2FS_RD_DATA) || get_pages(sbi, F2FS_RD_NODE) || |