[Cluster-devel] [PATCH dlm/next 2/3] fs: dlm: call dlm_lsop_recover_prep once

[Alexander Aring <aahringo@redhat.com>]

This patch changes the behaviour of "dlm_lsop_recover_prep" callback. It
will be called once when locking was stopped if it was previously
running not if dlm_ls_stop() is called multiple times when locking was
already stopped. Now it will be called only if a dlm_ls_start() was before.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
---
 fs/dlm/member.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index 5f5b07bdbcc3..446e1635229d 100644
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -685,7 +685,16 @@ int dlm_ls_stop(struct dlm_ls *ls)
 	if (!ls->ls_recover_begin)
 		ls->ls_recover_begin = jiffies;
 
-	dlm_lsop_recover_prep(ls);
+	/* call recover_prep ops only once and not multiple times
+	 * for each possible dlm_ls_stop() when recovery is already
+	 * stopped.
+	 *
+	 * If we successful was able to clear LSFL_RUNNING bit and
+	 * it was set we know it is the first dlm_ls_stop() call.
+	 */
+	if (new)
+		dlm_lsop_recover_prep(ls);
+
 	return 0;
 }
 
-- 
2.27.0