diff options
| author |   Christian Brauner <brauner@kernel.org> | 2025-01-15 11:50:29 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-01-16 11:48:12 +0100 |
| commit | c859df526b203497227b2b16c9bebcede67221e4 (patch) | |
| tree | b3263043b3e9b19a1d1c26d1b7de991c2fb80585 /include/linux | |
| parent | fs: Fix return type of do_mount() from long to int (diff) | |
| parent | gfs2: use lockref_init for qd_lockref (diff) | |
| download | wireguard-linux-c859df526b203497227b2b16c9bebcede67221e4.tar.xz wireguard-linux-c859df526b203497227b2b16c9bebcede67221e4.zip | |
Merge patch series "lockref cleanups"
Christoph Hellwig <hch@lst.de> says:
This series has a bunch of cosmetic cleanups for the lockref code I came up
with when reading the code in preparation of adding a new user of it.
* patches from https://lore.kernel.org/r/20250115094702.504610-1-hch@lst.de:
gfs2: use lockref_init for qd_lockref
erofs: use lockref_init for pcl->lockref
dcache: use lockref_init for d_lockref
lockref: add a lockref_init helper
lockref: drop superfluous externs
lockref: use bool for false/true returns
lockref: improve the lockref_get_not_zero description
lockref: remove lockref_put_not_zero
Link: https://lore.kernel.org/r/20250115094702.504610-1-hch@lst.de
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/lockref.h | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/include/linux/lockref.h b/include/linux/lockref.h index c3a1f78bc884..c39f119659ba 100644 --- a/include/linux/lockref.h +++ b/include/linux/lockref.h @@ -34,14 +34,24 @@ struct lockref { }; }; -extern void lockref_get(struct lockref *); -extern int lockref_put_return(struct lockref *); -extern int lockref_get_not_zero(struct lockref *); -extern int lockref_put_not_zero(struct lockref *); -extern int lockref_put_or_lock(struct lockref *); - -extern void lockref_mark_dead(struct lockref *); -extern int lockref_get_not_dead(struct lockref *); +/** + * lockref_init - Initialize a lockref + * @lockref: pointer to lockref structure + * @count: initial count + */ +static inline void lockref_init(struct lockref *lockref, unsigned int count) +{ + spin_lock_init(&lockref->lock); + lockref->count = count; +} + +void lockref_get(struct lockref *lockref); +int lockref_put_return(struct lockref *lockref); +bool lockref_get_not_zero(struct lockref *lockref); +bool lockref_put_or_lock(struct lockref *lockref); + +void lockref_mark_dead(struct lockref *lockref); +bool lockref_get_not_dead(struct lockref *lockref); /* Must be called under spinlock for reliable results */ static inline bool __lockref_is_dead(const struct lockref *l) |