jfs: Update jfs_error

Use a more current logging style.

Add __printf format and argument verification.

Remove embedded function names from formats.
Add %pf, __builtin_return_address(0) to jfs_error.
Add newlines to formats for kernel style consistency.
(One format already had an erroneous newline)
Coalesce formats and align arguments.

Object size reduced ~1KiB.

$ size fs/jfs/built-in.o*
   text	   data	    bss	    dec	    hex	filename
 201891	  35488	  63936	 301315	  49903	fs/jfs/built-in.o.new
 202821	  35488	  64192	 302501	  49da5	fs/jfs/built-in.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>

fs/jfs/jfs_metapage.c

@@ -646,7 +646,7 @@ struct metapage *__get_metapage(struct inode *inode, unsigned long lblock,
 	if (mp) {
 		if (mp->logical_size != size) {
 			jfs_error(inode->i_sb,
-				  "__get_metapage: mp->logical_size != size");
+				  "get_mp->logical_size != size\n");
 			jfs_err("logical_size = %d, size = %d",
 				mp->logical_size, size);
 			dump_stack();
@@ -657,8 +657,7 @@ struct metapage *__get_metapage(struct inode *inode, unsigned long lblock,
 		if (test_bit(META_discard, &mp->flag)) {
 			if (!new) {
 				jfs_error(inode->i_sb,
-					  "__get_metapage: using a "
-					  "discarded metapage");
+					  "using a discarded metapage\n");
 				discard_metapage(mp);
 				goto unlock;
 			}