Added __acquires / __releases sparse locking annotations
to lock_res_and_lock() and unlock_res_and_lock() functions
in l_lock.c, to fix below sparse warnings:
l_lock.c:47:22: warning: context imbalance in 'lock_res_and_lock' - wrong count at exit
l_lock.c:61:6: warning: context imbalance in 'unlock_res_and_lock' - unexpected unlock
Signed-off-by: Nayeemahmed Badebade <itachi.opsrc@xxxxxxxxx>
---
Changes in v2:
* Corrected sparse annotations for the lock
lock->l_resource->lr_lock
drivers/staging/lustre/lustre/ldlm/l_lock.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/staging/lustre/lustre/ldlm/l_lock.c b/drivers/staging/lustre/lustre/ldlm/l_lock.c
index ea8840c..3845f38 100644
--- a/drivers/staging/lustre/lustre/ldlm/l_lock.c
+++ b/drivers/staging/lustre/lustre/ldlm/l_lock.c
@@ -45,6 +45,8 @@
* being an atomic operation.
*/
struct ldlm_resource *lock_res_and_lock(struct ldlm_lock *lock)
+ __acquires(&lock->l_lock)
+ __acquires(&lock->l_resource->lr_lock)
{
spin_lock(&lock->l_lock);
@@ -59,6 +61,8 @@ struct ldlm_resource *lock_res_and_lock(struct ldlm_lock *lock)
* Unlock a lock and its resource previously locked with lock_res_and_lock
*/
void unlock_res_and_lock(struct ldlm_lock *lock)
+ __releases(&lock->l_resource->lr_lock)
+ __releases(&lock->l_lock)
{
/* on server-side resource of lock doesn't change */
ldlm_clear_res_locked(lock);
--
1.9.1
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