udf: Rename udf_warning to udf_warn

Rename udf_warning to udf_warn for consistency with normal logging
uses of pr_warn.

Rename function udf_warning to _udf_warn.
Remove __func__ from uses and move __func__ to a new udf_warn
macro that calls _udf_warn.
Add \n's to uses of udf_warn, remove \n from _udf_warn.
Coalesce formats.

Reviewed-by: NamJae Jeon <linkinjeon@gmail.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/udf/partition.c b/fs/udf/partition.c
index a71090e..c72edb2 100644
--- a/fs/udf/partition.c
+++ b/fs/udf/partition.c
@@ -322,8 +322,7 @@
 	BUG_ON(!inode);
 	retblk = udf_try_read_meta(inode, block, partition, offset);
 	if (retblk == 0xFFFFFFFF) {
-		udf_warning(sb, __func__, "error reading from METADATA, "
-			"trying to read from MIRROR");
+		udf_warn(sb, "error reading from METADATA, trying to read from MIRROR\n");
 		inode = mdata->s_mirror_fe;
 		if (!inode)
 			return 0xFFFFFFFF;