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

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From: Jules Irenge <jbi.octave@xxxxxxxxx>
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/20200403160505.2832-4-jbi.octave@xxxxxxxxx
Signed-off-by: Jules Irenge <jbi.octave@xxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Mark Fasheh <mark@xxxxxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Cc: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Cc: Joseph Qi <jiangqi903@xxxxxxxxx>
Cc: Changwei Ge <gechangwei@xxxxxxx>
Cc: Gang He <ghe@xxxxxxxx>
Cc: Jun Piao <piaojun@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

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

--- 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;
_




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