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authorChristoph Hellwig <hch@lst.de>2009-10-30 08:03:27 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2009-12-03 11:55:54 +0000
commitf25934c5f88655a8d5c3c40a540daed1f0e6dedc (patch)
treea21e1ab167314292ffe2e3b319c8d5abf5faccd7 /fs/gfs2/incore.h
parentc14f5735e724cb5338ca8298d42b1658008a10d7 (diff)
GFS2: add barrier/nobarrier mount options
Currently gfs2 issues barrier unconditionally. There are various reasons to disable them, be that just for testing or for stupid devices flushing large battert backed caches. Add a nobarrier option that matches xfs and btrfs for this. Also add a symmetric barrier option to turn it back on at remount time. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/incore.h')
-rw-r--r--fs/gfs2/incore.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index c239b0f969c8..4792200978c8 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -429,6 +429,7 @@ struct gfs2_args {
unsigned int ar_meta:1; /* mount metafs */
unsigned int ar_discard:1; /* discard requests */
unsigned int ar_errors:2; /* errors=withdraw | panic */
+ unsigned int ar_nobarrier:1; /* do not send barriers */
int ar_commit; /* Commit interval */
int ar_statfs_quantum; /* The fast statfs interval */
int ar_quota_quantum; /* The quota interval */