[002/128] ocfs2: add missing annotation for dlm_empty_lockres()

Commit Message

Andrew Morton June 2, 2020, 8:09 p.m. UTC

From: Jules Irenge <[e-mail]>
Subject: ocfs2: add missing annotation for dlm_empty_lockres()

Sparse reports a warning at dlm_empty_lockres()

warning: context imbalance in dlm_purge_lockres() - unexpected unlock

The root cause is the missing annotation at dlm_purge_lockres()

Add the missing __must_hold(&dlm->spinlock)

Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Jules Irenge <[e-mail]>
Reviewed-by: Andrew Morton <[e-mail]>
Cc: Mark Fasheh <[e-mail]>
Cc: Joel Becker <[e-mail]>
Cc: Junxiao Bi <[e-mail]>
Cc: Joseph Qi <[e-mail]>
Cc: Changwei Ge <[e-mail]>
Cc: Gang He <[e-mail]>
Cc: Jun Piao <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 fs/ocfs2/dlm/dlmmaster.c |    1 +
 1 file changed, 1 insertion(+)

Patch

--- a/fs/ocfs2/dlm/dlmmaster.c~ocfs2-add-missing-annotation-for-dlm_empty_lockres
+++ a/fs/ocfs2/dlm/dlmmaster.c
@@ -2760,6 +2760,7 @@  leave:
  * Returns: 1 if dlm->spinlock was dropped/retaken, 0 if never dropped
  */
 int dlm_empty_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
+	__must_hold(&dlm->spinlock)
 {
 	int ret;
 	int lock_dropped = 0;