diff options
| -rw-r--r-- | fs/f2fs/f2fs.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 9360a03fcc9..9182b2710db 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -495,9 +495,17 @@ static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) static inline void mutex_lock_all(struct f2fs_sb_info *sbi) { - int i = 0; - for (; i < NR_GLOBAL_LOCKS; i++) - mutex_lock(&sbi->fs_lock[i]); + int i; + + for (i = 0; i < NR_GLOBAL_LOCKS; i++) { + /* + * This is the only time we take multiple fs_lock[] + * instances; the order is immaterial since we + * always hold cp_mutex, which serializes multiple + * such operations. + */ + mutex_lock_nest_lock(&sbi->fs_lock[i], &sbi->cp_mutex); + } } static inline void mutex_unlock_all(struct f2fs_sb_info *sbi) |