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dlm: fix missing check in validate_lock_args

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This patch adds a additional check if lkb->lkb_wait_count is non zero as
it is done in validate_unlock_args() to check if any operation is in
progress. While on it add a comment taken from validate_unlock_args() to
signal what the check is doing.

There might be no changes because if lkb->lkb_wait_type is non zero
implies that lkb->lkb_wait_count is non zero. However we should add the
check as it does validate_unlock_args().

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
Alexander Aring 2022-04-04 16:06:29 -04:00 committed by David Teigland
parent 1f4f10845e
commit 67e4d8c51d
1 changed files with 2 additions and 1 deletions
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3
fs/dlm/lock.c
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@ -2912,7 +2912,8 @@ static int validate_lock_args(struct dlm_ls *ls, struct dlm_lkb *lkb,
if (lkb->lkb_status != DLM_LKSTS_GRANTED)
goto out;
if (lkb->lkb_wait_type)
/* lock not allowed if there's any op in progress */
if (lkb->lkb_wait_type || lkb->lkb_wait_count)
goto out;
if (is_overlap(lkb))