diff options
| -rw-r--r-- | include/linux/fs.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 98b7a7a8c42e..ac8b5a9b467b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1645,9 +1645,23 @@ static inline bool __sb_start_write_trylock(struct super_block *sb, int level) #define __sb_writers_release(sb, lev) \ percpu_rwsem_release(&(sb)->s_writers.rw_sem[(lev)-1], 1, _THIS_IP_) +/** + * __sb_write_started - check if sb freeze level is held + * @sb: the super we write to + * @level: the freeze level + * + * > 0 sb freeze level is held + * 0 sb freeze level is not held + * < 0 !CONFIG_LOCKDEP/LOCK_STATE_UNKNOWN + */ +static inline int __sb_write_started(const struct super_block *sb, int level) +{ + return lockdep_is_held_type(sb->s_writers.rw_sem + level - 1, 1); +} + static inline bool sb_write_started(const struct super_block *sb) { - return lockdep_is_held_type(sb->s_writers.rw_sem + SB_FREEZE_WRITE - 1, 1); + return __sb_write_started(sb, SB_FREEZE_WRITE); } /** |