[XFS] remove some dead code from pagebuf

SGI-PV: 934766
SGI-Modid: xfs-linux:xfs-kern:197783a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>

fs/xfs/linux-2.6/xfs_buf.c

@@ -699,25 +699,6 @@ xfs_buf_read_flags(
 	return NULL;
 }
 
-/*
- * Create a skeletal pagebuf (no pages associated with it).
- */
-xfs_buf_t *
-pagebuf_lookup(
-	xfs_buftarg_t		*target,
-	loff_t			ioff,
-	size_t			isize,
-	page_buf_flags_t	flags)
-{
-	xfs_buf_t		*pb;
-
-	pb = pagebuf_allocate(flags);
-	if (pb) {
-		_pagebuf_initialize(pb, target, ioff, isize, flags);
-	}
-	return pb;
-}
-
 /*
  * If we are not low on memory then do the readahead in a deadlock
  * safe manner.
@@ -891,17 +872,6 @@ pagebuf_rele(
 
 	PB_TRACE(pb, "rele", pb->pb_relse);
 
-	/*
-	 * pagebuf_lookup buffers are not hashed, not delayed write,
-	 * and don't have their own release routines.  Special case.
-	 */
-	if (unlikely(!hash)) {
-		ASSERT(!pb->pb_relse);
-		if (atomic_dec_and_test(&pb->pb_hold))
-			xfs_buf_free(pb);
-		return;
-	}
-
 	if (atomic_dec_and_lock(&pb->pb_hold, &hash->bh_lock)) {
 		int		do_free = 1;
 

fs/xfs/linux-2.6/xfs_buf.h

@@ -206,13 +206,6 @@ extern xfs_buf_t *xfs_buf_read_flags(	/* allocate and read a buffer	*/
 #define xfs_buf_read(target, blkno, len, flags) \
 	xfs_buf_read_flags((target), (blkno), (len), PBF_LOCK | PBF_MAPPED)
 
-extern xfs_buf_t *pagebuf_lookup(
-		xfs_buftarg_t *,
-		loff_t,			/* starting offset of range	*/
-		size_t,			/* length of range		*/
-		page_buf_flags_t);	/* PBF_READ, PBF_WRITE,		*/
-					/* PBF_FORCEIO, 		*/
-
 extern xfs_buf_t *pagebuf_get_empty(	/* allocate pagebuf struct with	*/
 					/*  no memory or disk address	*/
 		size_t len,