xfs: remove duplicate buffer flags

Currently we define aliases for the buffer flags in various
namespaces, which only adds confusion.  Remove all but the XBF_
flags to clean this up a bit.

Note that we still abuse XFS_B_ASYNC/XBF_ASYNC for some non-buffer
uses, but I'll clean that up later.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index f38855d..6194fb5 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -785,7 +785,7 @@
 
 	mp = ip->i_mount;
 	bp = xfs_incore(mp->m_ddev_targp, iip->ili_format.ilf_blkno,
-		    iip->ili_format.ilf_len, XFS_INCORE_TRYLOCK);
+		    iip->ili_format.ilf_len, XBF_TRYLOCK);
 
 	if (bp != NULL) {
 		if (XFS_BUF_ISDELAYWRITE(bp)) {