[PATCH] Exterminate PAGE_BUG

Remove PAGE_BUG - repalce it with BUG and BUG_ON.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/buffer.c b/fs/buffer.c
index 188365c..792cbac 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2078,8 +2078,7 @@
 	int nr, i;
 	int fully_mapped = 1;
 
-	if (!PageLocked(page))
-		PAGE_BUG(page);
+	BUG_ON(!PageLocked(page));
 	blocksize = 1 << inode->i_blkbits;
 	if (!page_has_buffers(page))
 		create_empty_buffers(page, blocksize, 0);