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kref: Add context-analysis annotations

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Mark functions that conditionally acquire the passed lock.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20251219154418.3592607-17-elver@google.com
This commit is contained in:
Marco Elver
2025-12-19 16:40:05 +01:00
committed by Peter Zijlstra
parent f0b7ce22d7
commit 5e256db932
1 changed files with 2 additions and 0 deletions
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2
include/linux/kref.h
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@@ -81,6 +81,7 @@ static inline int kref_put(struct kref *kref, void (*release)(struct kref *kref)
static inline int kref_put_mutex(struct kref *kref,
void (*release)(struct kref *kref),
struct mutex *mutex)
__cond_acquires(true, mutex)
{
if (refcount_dec_and_mutex_lock(&kref->refcount, mutex)) {
release(kref);
@@ -102,6 +103,7 @@ static inline int kref_put_mutex(struct kref *kref,
static inline int kref_put_lock(struct kref *kref,
void (*release)(struct kref *kref),
spinlock_t *lock)
__cond_acquires(true, lock)
{
if (refcount_dec_and_lock(&kref->refcount, lock)) {
release(kref);