ext3: make ext3 mount default to barrier=1
Christoph Hellwig [Sat, 16 Jul 2011 20:46:50 +0000 (16:46 -0400)]
This patch turns on barriers by default for ext3.  mount -o barrier=0
will turn them off.  Based on a patch from Chris Mason in the SuSE tree.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Eric Sandeen <sandeen@redhat.com>
Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Jeff Mahoney <jeffm@suse.com>
Acked-by: Ted Ts'o <tytso@mit.edu>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/ext3/super.c

index aad153e..b57ea2f 100644 (file)
@@ -1718,6 +1718,8 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
        sbi->s_resuid = le16_to_cpu(es->s_def_resuid);
        sbi->s_resgid = le16_to_cpu(es->s_def_resgid);
 
+       /* enable barriers by default */
+       set_opt(sbi->s_mount_opt, BARRIER);
        set_opt(sbi->s_mount_opt, RESERVATION);
 
        if (!parse_options ((char *) data, sb, &journal_inum, &journal_devnum,