reiserfs: rework reiserfs_warning

ReiserFS warnings 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/tail_conversion.c b/fs/reiserfs/tail_conversion.c
index f8121a1..256285d 100644
--- a/fs/reiserfs/tail_conversion.c
+++ b/fs/reiserfs/tail_conversion.c
@@ -48,9 +48,9 @@
 
 	// FIXME: we could avoid this 
 	if (search_for_position_by_key(sb, &end_key, path) == POSITION_FOUND) {
-		reiserfs_warning(sb, "PAP-14030: direct2indirect: "
-				 "pasted or inserted byte exists in the tree %K. "
-				 "Use fsck to repair.", &end_key);
+		reiserfs_warning(sb, "PAP-14030",
+				 "pasted or inserted byte exists in "
+				 "the tree %K. Use fsck to repair.", &end_key);
 		pathrelse(path);
 		return -EIO;
 	}