From: Alexander Aring <aahringo@redhat.com>
Date: Mon, 15 Aug 2022 19:43:20 +0000 (-0400)
Subject: fs: dlm: allow lockspaces have zero lvblen
X-Git-Tag: v6.1-rc1~190^2~8
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b5c9d37c7f6051b45b2da70e434e791080dcb53f;p=thirdparty%2Flinux.git

fs: dlm: allow lockspaces have zero lvblen

A dlm user may not use the DLM_LKF_VALBLK flag in the DLM API,
so a zero lvblen should be allowed as a lockspace parameter.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
---

diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index 3972f4d86c755..56c79926e7be7 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -416,7 +416,7 @@ static int new_lockspace(const char *name, const char *cluster,
 	if (namelen > DLM_LOCKSPACE_LEN || namelen == 0)
 		return -EINVAL;
 
-	if (!lvblen || (lvblen % 8))
+	if (lvblen % 8)
 		return -EINVAL;
 
 	if (!try_module_get(THIS_MODULE))