Commit b934beaf authored Feb 10, 2015 by Xue jiufei Committed by Linus Torvalds Feb 10, 2015

ocfs2/dlm: add missing dlm_lock_put() when recovery master down



When the recovery master is down, the owner of $RECOVERY calls
dlm_do_local_recovery_cleanup() to prune any $RECOVERY entries for dead
nodes.  The lock is in the granted list and the refcount must be 2.  We
should put twice to remove this lock.  Otherwise, it will lead to a memory
leak.

Signed-off-by: joyce.xue <xuejiufei@huawei.com>
Reported-by: yangwenfang <vicky.yangwenfang@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 102ca660

fs/ocfs2/dlm/dlmrecovery.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -1070,6 +1070,9 @@ static void dlm_move_reco_locks_to_list(struct dlm_ctxt *dlm,
		dead_node, dlm->name);
		list_del_init(&lock->list);
		dlm_lock_put(lock);
		/* Can't schedule DLM_UNLOCK_FREE_LOCK
		* - do manually */
		dlm_lock_put(lock);
		break;
		}
		}
		@@ -2346,6 +2349,10 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node)
		dead_node, dlm->name);
		list_del_init(&lock->list);
		dlm_lock_put(lock);
		/* Can't schedule
		* DLM_UNLOCK_FREE_LOCK
		* - do manually */
		dlm_lock_put(lock);
		break;
		}
		}