ext2: Unify log messages in ext2

make messages produced by ext2 more unified. It should be
easy to parse.

dmesg before patch:
[ 4893.684892] reservations ON
[ 4893.684896] xip option not supported
[ 4893.684961] EXT2-fs warning: mounting ext3 filesystem as ext2
[ 4893.684964] EXT2-fs warning: maximal mount count reached, running
e2fsck is recommended
[ 4893.684990] EXT II FS: 0.5b, 95/08/09, bs=1024, fs=1024, gc=2,
bpg=8192, ipg=1280, mo=80010]

dmesg after patch:
[ 4893.684892] EXT2-fs (loop0): reservations ON
[ 4893.684896] EXT2-fs (loop0): xip option not supported
[ 4893.684961] EXT2-fs (loop0): warning: mounting ext3 filesystem as
ext2
[ 4893.684964] EXT2-fs (loop0): warning: maximal mount count reached,
running e2fsck is recommended
[ 4893.684990] EXT2-fs (loop0): 0.5b, 95/08/09, bs=1024, fs=1024, gc=2,
bpg=8192, ipg=1280, mo=80010]

Signed-off-by: Alexey Fisher <bug-track@fisher-privat.net>
Reviewed-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: Jan Kara <jack@suse.cz>

fs/ext2/xip.c

@@ -69,8 +69,9 @@ void ext2_xip_verify_sb(struct super_block *sb)
 	if ((sbi->s_mount_opt & EXT2_MOUNT_XIP) &&
 	    !sb->s_bdev->bd_disk->fops->direct_access) {
 		sbi->s_mount_opt &= (~EXT2_MOUNT_XIP);
-		ext2_warning(sb, __func__,
-			     "ignoring xip option - not supported by bdev");
+		ext2_msg(sb, KERN_WARNING,
+			     "warning: ignoring xip option - "
+			     "not supported by bdev");
 	}
 }