From dba2d70c5dc520fdb569d1fd8dbd45c0e330253e Mon Sep 17 00:00:00 2001
From: David Teigland <teigland@redhat.com>
Date: Wed, 14 Nov 2012 13:46:53 -0500
Subject: GFS2: only use lvb on glocks that need it

Save the effort of allocating, reading and writing
the lvb for most glocks that do not use it.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---
 fs/gfs2/incore.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'fs/gfs2/incore.h')

diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index a35ef5cd1480..bd577fc59e0b 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -216,6 +216,7 @@ struct gfs2_glock_operations {
 	const int go_type;
 	const unsigned long go_flags;
 #define GLOF_ASPACE 1
+#define GLOF_LVB    2
 };
 
 enum {
@@ -321,7 +322,7 @@ struct gfs2_glock {
 	ktime_t gl_dstamp;
 	struct gfs2_lkstats gl_stats;
 	struct dlm_lksb gl_lksb;
-	char gl_lvb[32];
+	char *gl_lvb;
 	unsigned long gl_tchange;
 	void *gl_object;
 
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