[PATCH] Make XFS use BH_Unwritten and BH_Delay correctly

Don't hide buffer_unwritten behind buffer_delay() and remove the hack that
clears unexpected buffer_unwritten() states now that it can't happen.
Signed-off-by: Dave Chinner <dgc@sgi.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Timothy Shimmin <tes@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/xfs/linux-2.6/xfs_aops.c

@@ -56,8 +56,6 @@ xfs_count_page_state(
 	do {
 		if (buffer_uptodate(bh) && !buffer_mapped(bh))
 			(*unmapped) = 1;
-		else if (buffer_unwritten(bh) && !buffer_delay(bh))
-			clear_buffer_unwritten(bh);
 		else if (buffer_unwritten(bh))
 			(*unwritten) = 1;
 		else if (buffer_delay(bh))
@@ -1272,7 +1270,6 @@ __xfs_get_blocks(
 			if (direct)
 				bh_result->b_private = inode;
 			set_buffer_unwritten(bh_result);
-			set_buffer_delay(bh_result);
 		}
 	}