From: David Teigland <teigland@redhat.com>
To: linux-kernel@vger.kernel.org
Subject: [PATCH 6/7] dlm: ignore cancel on granted lock
Date: Tue, 24 Mar 2009 09:07:51 -0500 [thread overview]
Message-ID: <1237903672-18913-7-git-send-email-teigland@redhat.com> (raw)
Return immediately from dlm_unlock(CANCEL) if the lock is
granted and not being converted; there's nothing to cancel.
Signed-off-by: David Teigland <teigland@redhat.com>
---
fs/dlm/lock.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 8cb9204..205ec95 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -2186,6 +2186,13 @@ static int validate_unlock_args(struct dlm_lkb *lkb, struct dlm_args *args)
goto out;
}
+ /* there's nothing to cancel */
+ if (lkb->lkb_status == DLM_LKSTS_GRANTED &&
+ !lkb->lkb_wait_type) {
+ rv = -EBUSY;
+ goto out;
+ }
+
switch (lkb->lkb_wait_type) {
case DLM_MSG_LOOKUP:
case DLM_MSG_REQUEST:
--
1.5.5.6
reply other threads:[~2009-03-24 14:20 UTC|newest]
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