reiserfs: rework reiserfs_panic

ReiserFS panics can be somewhat inconsistent.
In some cases:
 * a unique identifier may be associated with it
 * the function name may be included
 * the device may be printed separately

This patch aims to make warnings more consistent. reiserfs_warning() prints
the device name, so printing it a second time is not required. The function
name for a warning is always helpful in debugging, so it is now automatically
inserted into the output. Hans has stated that every warning should have
a unique identifier. Some cases lack them, others really shouldn't have them.
reiserfs_warning() now expects an id associated with each message. In the
rare case where one isn't needed, "" will suffice.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 95157762..7ee0097 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -1300,8 +1300,7 @@
 	ih = PATH_PITEM_HEAD(path);
 
 	if (!is_statdata_le_ih(ih))
-		reiserfs_panic(inode->i_sb,
-			       "vs-13065: update_stat_data: key %k, found item %h",
+		reiserfs_panic(inode->i_sb, "vs-13065", "key %k, found item %h",
 			       INODE_PKEY(inode), ih);
 
 	if (stat_data_v1(ih)) {