xfs: remove xfs_btree_reada_bufl

xfs_btree_reada_bufl just wraps xfs_btree_readahead and a fsblock
to daddr conversion.  Just open code it's two callsites in the only
caller.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>

fs/xfs/libxfs/xfs_btree.c

@@ -889,25 +889,6 @@ xfs_btree_read_bufl(
 	return 0;
 }
 
-/*
- * Read-ahead the block, don't wait for it, don't return a buffer.
- * Long-form addressing.
- */
-/* ARGSUSED */
-void
-xfs_btree_reada_bufl(
-	struct xfs_mount	*mp,		/* file system mount point */
-	xfs_fsblock_t		fsbno,		/* file system block number */
-	xfs_extlen_t		count,		/* count of filesystem blocks */
-	const struct xfs_buf_ops *ops)
-{
-	xfs_daddr_t		d;
-
-	ASSERT(fsbno != NULLFSBLOCK);
-	d = XFS_FSB_TO_DADDR(mp, fsbno);
-	xfs_buf_readahead(mp->m_ddev_targp, d, mp->m_bsize * count, ops);
-}
-
 /*
  * Read-ahead the block, don't wait for it, don't return a buffer.
  * Short-form addressing.
@@ -935,19 +916,20 @@ xfs_btree_readahead_fsblock(
 	int			lr,
 	struct xfs_btree_block	*block)
 {
-	int			rval = 0;
+	struct xfs_mount	*mp = cur->bc_mp;
 	xfs_fsblock_t		left = be64_to_cpu(block->bb_u.l.bb_leftsib);
 	xfs_fsblock_t		right = be64_to_cpu(block->bb_u.l.bb_rightsib);
+	int			rval = 0;
 
 	if ((lr & XFS_BTCUR_LEFTRA) && left != NULLFSBLOCK) {
-		xfs_btree_reada_bufl(cur->bc_mp, left, 1,
-				     cur->bc_ops->buf_ops);
+		xfs_buf_readahead(mp->m_ddev_targp, XFS_FSB_TO_DADDR(mp, left),
+				mp->m_bsize, cur->bc_ops->buf_ops);
 		rval++;
 	}
 
 	if ((lr & XFS_BTCUR_RIGHTRA) && right != NULLFSBLOCK) {
-		xfs_btree_reada_bufl(cur->bc_mp, right, 1,
-				     cur->bc_ops->buf_ops);
+		xfs_buf_readahead(mp->m_ddev_targp, XFS_FSB_TO_DADDR(mp, right),
+				mp->m_bsize, cur->bc_ops->buf_ops);
 		rval++;
 	}
 

fs/xfs/libxfs/xfs_btree.h

@@ -391,17 +391,6 @@ xfs_btree_read_bufl(
 	int			refval,	/* ref count value for buffer */
 	const struct xfs_buf_ops *ops);
 
-/*
- * Read-ahead the block, don't wait for it, don't return a buffer.
- * Long-form addressing.
- */
-void					/* error */
-xfs_btree_reada_bufl(
-	struct xfs_mount	*mp,	/* file system mount point */
-	xfs_fsblock_t		fsbno,	/* file system block number */
-	xfs_extlen_t		count,	/* count of filesystem blocks */
-	const struct xfs_buf_ops *ops);
-
 /*
  * Read-ahead the block, don't wait for it, don't return a buffer.
  * Short-form addressing.