ext2: write superblock only once on unmount

Currently on unmount if we are mounted R/W, we first write the superblock to
the media if it is dirty, and then write it again, which is not optimal. This
patch makes ext2 write the superblock on unmount less times.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>

diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index e1025c7a437a730d9213bf689c63c68d6dcc1d76..12a7916cfa9d1c3c15b1d1d4b43e516a4f02c479 100644 (file)
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -130,9 +130,6 @@ static void ext2_put_super (struct super_block * sb)
 
        dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
 
-       if (sb->s_dirt)
-               ext2_write_super(sb);
-
        ext2_xattr_put_super(sb);
        if (!(sb->s_flags & MS_RDONLY)) {
                struct ext2_super_block *es = sbi->s_es;