ocfs2: Fix empty lvb check
The check for an empty lvb should check the entire buffer not just the first
byte.
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index b568bb6..8a3f017 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -1021,8 +1021,9 @@
ml->type == LKM_PRMODE) {
/* if it is already set, this had better be a PR
* and it has to match */
- if (mres->lvb[0] && (ml->type == LKM_EXMODE ||
- memcmp(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN))) {
+ if (!dlm_lvb_is_empty(mres->lvb) &&
+ (ml->type == LKM_EXMODE ||
+ memcmp(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN))) {
mlog(ML_ERROR, "mismatched lvbs!\n");
__dlm_print_one_lock_resource(lock->lockres);
BUG();
@@ -1554,7 +1555,7 @@
lksb->flags |= (ml->flags &
(DLM_LKSB_PUT_LVB|DLM_LKSB_GET_LVB));
- if (mres->lvb[0]) {
+ if (!dlm_lvb_is_empty(mres->lvb)) {
if (lksb->flags & DLM_LKSB_PUT_LVB) {
/* other node was trying to update
* lvb when node died. recreate the
@@ -1565,8 +1566,9 @@
* most recent valid lvb info */
BUG_ON(ml->type != LKM_EXMODE &&
ml->type != LKM_PRMODE);
- if (res->lvb[0] && (ml->type == LKM_EXMODE ||
- memcmp(res->lvb, mres->lvb, DLM_LVB_LEN))) {
+ if (!dlm_lvb_is_empty(res->lvb) &&
+ (ml->type == LKM_EXMODE ||
+ memcmp(res->lvb, mres->lvb, DLM_LVB_LEN))) {
mlog(ML_ERROR, "received bad lvb!\n");
__dlm_print_one_lock_resource(res);
BUG();