path: root/fs/gfs2/ops_fstype.c
diff options
authorChristoph Hellwig <>2009-10-30 08:03:27 +0100
committerSteven Whitehouse <>2009-12-03 11:55:54 +0000
commitf25934c5f88655a8d5c3c40a540daed1f0e6dedc (patch)
treea21e1ab167314292ffe2e3b319c8d5abf5faccd7 /fs/gfs2/ops_fstype.c
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 <> Signed-off-by: Steven Whitehouse <>
Diffstat (limited to 'fs/gfs2/ops_fstype.c')
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 9744ee92047..edfee24f363 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -1131,6 +1131,8 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent
if (sdp->sd_args.ar_posix_acl)
sb->s_flags |= MS_POSIXACL;
+ if (sdp->sd_args.ar_nobarrier)
+ set_bit(SDF_NOBARRIERS, &sdp->sd_flags);
sb->s_magic = GFS2_MAGIC;
sb->s_op = &gfs2_super_ops;