[PATCH 21/35] staging: lustre: statahead: lock leaks if statahead file recreated

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From: Lai Siyao <lai.siyao@xxxxxxxxx>

During statahead file may be recreated, though this is rare case,
current code will leak the lock, this patch will release lock in
this case.

Signed-off-by: Lai Siyao <lai.siyao@xxxxxxxxx>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7232
Reviewed-on: http://review.whamcloud.com/16841
Reviewed-by: Fan Yong <fan.yong@xxxxxxxxx>
Reviewed-by: John L. Hammond <john.hammond@xxxxxxxxx>
Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx>
Signed-off-by: James Simmons <jsimmons@xxxxxxxxxxxxx>
---
 drivers/staging/lustre/lustre/llite/statahead.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/statahead.c b/drivers/staging/lustre/lustre/llite/statahead.c
index 0677513..b43955f 100644
--- a/drivers/staging/lustre/lustre/llite/statahead.c
+++ b/drivers/staging/lustre/lustre/llite/statahead.c
@@ -1475,6 +1475,7 @@ static int revalidate_statahead_dentry(struct inode *dir,
 
 				alias = ll_splice_alias(inode, *dentryp);
 				if (IS_ERR(alias)) {
+					ll_intent_release(&it);
 					rc = PTR_ERR(alias);
 					goto out_unplug;
 				}
@@ -1493,6 +1494,7 @@ static int revalidate_statahead_dentry(struct inode *dir,
 				       *dentryp,
 				       PFID(ll_inode2fid((*dentryp)->d_inode)),
 				       PFID(ll_inode2fid(inode)));
+				ll_intent_release(&it);
 				rc = -ESTALE;
 				goto out_unplug;
 			}
-- 
1.7.1

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