Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git

1 files changed, 150 insertions, 94 deletions

diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 3e76def..e415a46 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -1,68 +1,53 @@
 /*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation.
  *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like.  Any license provided herein, whether implied or
- * otherwise, applies only to this software file.  Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA  94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
-
 #include "xfs.h"
-
-#include "xfs_macros.h"
+#include "xfs_fs.h"
 #include "xfs_types.h"
-#include "xfs_inum.h"
+#include "xfs_bit.h"
 #include "xfs_log.h"
+#include "xfs_inum.h"
 #include "xfs_trans.h"
 #include "xfs_sb.h"
 #include "xfs_ag.h"
 #include "xfs_dir.h"
 #include "xfs_dir2.h"
-#include "xfs_dmapi.h"
-#include "xfs_mount.h"
-#include "xfs_alloc_btree.h"
+#include "xfs_da_btree.h"
 #include "xfs_bmap_btree.h"
+#include "xfs_alloc_btree.h"
 #include "xfs_ialloc_btree.h"
-#include "xfs_btree.h"
-#include "xfs_ialloc.h"
-#include "xfs_attr_sf.h"
 #include "xfs_dir_sf.h"
 #include "xfs_dir2_sf.h"
+#include "xfs_attr_sf.h"
 #include "xfs_dinode.h"
-#include "xfs_inode_item.h"
 #include "xfs_inode.h"
+#include "xfs_btree.h"
+#include "xfs_dmapi.h"
+#include "xfs_mount.h"
+#include "xfs_ialloc.h"
 #include "xfs_itable.h"
+#include "xfs_inode_item.h"
 #include "xfs_extfree_item.h"
 #include "xfs_alloc.h"
 #include "xfs_bmap.h"
 #include "xfs_rtalloc.h"
 #include "xfs_error.h"
-#include "xfs_da_btree.h"
 #include "xfs_dir_leaf.h"
-#include "xfs_bit.h"
+#include "xfs_attr_leaf.h"
 #include "xfs_rw.h"
 #include "xfs_quota.h"
 #include "xfs_trans_space.h"
@@ -438,6 +423,12 @@ xfs_bmap_count_leaves(
 	int			numrecs,
 	int			*count);
 
+STATIC int
+xfs_bmap_disk_count_leaves(
+	xfs_bmbt_rec_t		*frp,
+	int			numrecs,
+	int			*count);
+
 /*
  * Bmap internal routines.
  */
@@ -2772,8 +2763,8 @@ xfs_bmap_btree_to_extents(
 	ASSERT(ifp->if_flags & XFS_IFEXTENTS);
 	ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE);
 	rblock = ifp->if_broot;
-	ASSERT(INT_GET(rblock->bb_level, ARCH_CONVERT) == 1);
-	ASSERT(INT_GET(rblock->bb_numrecs, ARCH_CONVERT) == 1);
+	ASSERT(be16_to_cpu(rblock->bb_level) == 1);
+	ASSERT(be16_to_cpu(rblock->bb_numrecs) == 1);
 	ASSERT(XFS_BMAP_BROOT_MAXRECS(ifp->if_broot_bytes) == 1);
 	mp = ip->i_mount;
 	pp = XFS_BMAP_BROOT_PTR_ADDR(rblock, 1, ifp->if_broot_bytes);
@@ -3216,11 +3207,11 @@ xfs_bmap_extents_to_btree(
 	 * Fill in the root.
 	 */
 	block = ifp->if_broot;
-	INT_SET(block->bb_magic, ARCH_CONVERT, XFS_BMAP_MAGIC);
-	INT_SET(block->bb_level, ARCH_CONVERT, 1);
-	INT_SET(block->bb_numrecs, ARCH_CONVERT, 1);
-	INT_SET(block->bb_leftsib, ARCH_CONVERT, NULLDFSBNO);
-	INT_SET(block->bb_rightsib, ARCH_CONVERT, NULLDFSBNO);
+	block->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
+	block->bb_level = cpu_to_be16(1);
+	block->bb_numrecs = cpu_to_be16(1);
+	block->bb_leftsib = cpu_to_be64(NULLDFSBNO);
+	block->bb_rightsib = cpu_to_be64(NULLDFSBNO);
 	/*
 	 * Need a cursor.  Can't allocate until bb_level is filled in.
 	 */
@@ -3273,10 +3264,10 @@ xfs_bmap_extents_to_btree(
 	 * Fill in the child block.
 	 */
 	ablock = XFS_BUF_TO_BMBT_BLOCK(abp);
-	INT_SET(ablock->bb_magic, ARCH_CONVERT, XFS_BMAP_MAGIC);
+	ablock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
 	ablock->bb_level = 0;
-	INT_SET(ablock->bb_leftsib, ARCH_CONVERT, NULLDFSBNO);
-	INT_SET(ablock->bb_rightsib, ARCH_CONVERT, NULLDFSBNO);
+	ablock->bb_leftsib = cpu_to_be64(NULLDFSBNO);
+	ablock->bb_rightsib = cpu_to_be64(NULLDFSBNO);
 	arp = XFS_BMAP_REC_IADDR(ablock, 1, cur);
 	nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
 	for (ep = ifp->if_u1.if_extents, cnt = i = 0; i < nextents; i++, ep++) {
@@ -3286,8 +3277,8 @@ xfs_bmap_extents_to_btree(
 			arp++; cnt++;
 		}
 	}
-	INT_SET(ablock->bb_numrecs, ARCH_CONVERT, cnt);
-	ASSERT(INT_GET(ablock->bb_numrecs, ARCH_CONVERT) == XFS_IFORK_NEXTENTS(ip, whichfork));
+	ASSERT(cnt == XFS_IFORK_NEXTENTS(ip, whichfork));
+	ablock->bb_numrecs = cpu_to_be16(cnt);
 	/*
 	 * Fill in the root key and pointer.
 	 */
@@ -3301,7 +3292,7 @@ xfs_bmap_extents_to_btree(
 	 * the root is at the right level.
 	 */
 	xfs_bmbt_log_block(cur, abp, XFS_BB_ALL_BITS);
-	xfs_bmbt_log_recs(cur, abp, 1, INT_GET(ablock->bb_numrecs, ARCH_CONVERT));
+	xfs_bmbt_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs));
 	ASSERT(*curp == NULL);
 	*curp = cur;
 	*logflagsp = XFS_ILOG_CORE | XFS_ILOG_FBROOT(whichfork);
@@ -3337,6 +3328,29 @@ xfs_bmap_insert_exlist(
 }
 
 /*
+ * Helper routine to reset inode di_forkoff field when switching
+ * attribute fork from local to extent format - we reset it where
+ * possible to make space available for inline data fork extents.
+ */
+STATIC void
+xfs_bmap_forkoff_reset(
+	xfs_mount_t	*mp,
+	xfs_inode_t	*ip,
+	int		whichfork)
+{
+	if (whichfork == XFS_ATTR_FORK &&
+	    (ip->i_d.di_format != XFS_DINODE_FMT_DEV) &&
+	    (ip->i_d.di_format != XFS_DINODE_FMT_UUID) &&
+	    ((mp->m_attroffset >> 3) > ip->i_d.di_forkoff)) {
+		ip->i_d.di_forkoff = mp->m_attroffset >> 3;
+		ip->i_df.if_ext_max = XFS_IFORK_DSIZE(ip) /
+					(uint)sizeof(xfs_bmbt_rec_t);
+		ip->i_afp->if_ext_max = XFS_IFORK_ASIZE(ip) /
+					(uint)sizeof(xfs_bmbt_rec_t);
+	}
+}
+
+/*
  * Convert a local file to an extents file.
  * This code is out of bounds for data forks of regular files,
  * since the file data needs to get logged so things will stay consistent.
@@ -3403,6 +3417,7 @@ xfs_bmap_local_to_extents(
 		memcpy((char *)XFS_BUF_PTR(bp), ifp->if_u1.if_data,
 			ifp->if_bytes);
 		xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
+		xfs_bmap_forkoff_reset(args.mp, ip, whichfork);
 		xfs_idata_realloc(ip, -ifp->if_bytes, whichfork);
 		xfs_iext_realloc(ip, 1, whichfork);
 		ep = ifp->if_u1.if_extents;
@@ -3413,8 +3428,10 @@ xfs_bmap_local_to_extents(
 		XFS_TRANS_MOD_DQUOT_BYINO(args.mp, tp, ip,
 			XFS_TRANS_DQ_BCOUNT, 1L);
 		flags |= XFS_ILOG_FEXT(whichfork);
-	} else
+	} else {
 		ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) == 0);
+		xfs_bmap_forkoff_reset(ip->i_mount, ip, whichfork);
+	}
 	ifp->if_flags &= ~XFS_IFINLINE;
 	ifp->if_flags |= XFS_IFEXTENTS;
 	XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS);
@@ -3796,22 +3813,24 @@ xfs_bunmap_trace(
 int						/* error code */
 xfs_bmap_add_attrfork(
 	xfs_inode_t		*ip,		/* incore inode pointer */
-	int			rsvd)		/* OK to allocated reserved blocks in trans */
+	int			size,		/* space new attribute needs */
+	int			rsvd)		/* xact may use reserved blks */
 {
-	int			blks;		/* space reservation */
-	int			committed;	/* xaction was committed */
-	int			error;		/* error return value */
 	xfs_fsblock_t		firstblock;	/* 1st block/ag allocated */
 	xfs_bmap_free_t		flist;		/* freed extent list */
-	int			logflags;	/* logging flags */
 	xfs_mount_t		*mp;		/* mount structure */
-	unsigned long		s;		/* spinlock spl value */
 	xfs_trans_t		*tp;		/* transaction pointer */
+	unsigned long		s;		/* spinlock spl value */
+	int			blks;		/* space reservation */
+	int			version = 1;	/* superblock attr version */
+	int			committed;	/* xaction was committed */
+	int			logflags;	/* logging flags */
+	int			error;		/* error return value */
 
+	ASSERT(XFS_IFORK_Q(ip) == 0);
 	ASSERT(ip->i_df.if_ext_max ==
 	       XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
-	if (XFS_IFORK_Q(ip))
-		return 0;
+
 	mp = ip->i_mount;
 	ASSERT(!XFS_NOT_DQATTACHED(mp, ip));
 	tp = xfs_trans_alloc(mp, XFS_TRANS_ADDAFORK);
@@ -3853,7 +3872,11 @@ xfs_bmap_add_attrfork(
 	case XFS_DINODE_FMT_LOCAL:
 	case XFS_DINODE_FMT_EXTENTS:
 	case XFS_DINODE_FMT_BTREE:
-		ip->i_d.di_forkoff = mp->m_attroffset >> 3;
+		ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size);
+		if (!ip->i_d.di_forkoff)
+			ip->i_d.di_forkoff = mp->m_attroffset >> 3;
+		else if (!(mp->m_flags & XFS_MOUNT_COMPAT_ATTR))
+			version = 2;
 		break;
 	default:
 		ASSERT(0);
@@ -3890,12 +3913,22 @@ xfs_bmap_add_attrfork(
 		xfs_trans_log_inode(tp, ip, logflags);
 	if (error)
 		goto error2;
-	if (!XFS_SB_VERSION_HASATTR(&mp->m_sb)) {
+	if (!XFS_SB_VERSION_HASATTR(&mp->m_sb) ||
+	   (!XFS_SB_VERSION_HASATTR2(&mp->m_sb) && version == 2)) {
+		__int64_t sbfields = 0;
+
 		s = XFS_SB_LOCK(mp);
 		if (!XFS_SB_VERSION_HASATTR(&mp->m_sb)) {
 			XFS_SB_VERSION_ADDATTR(&mp->m_sb);
+			sbfields |= XFS_SB_VERSIONNUM;
+		}
+		if (!XFS_SB_VERSION_HASATTR2(&mp->m_sb) && version == 2) {
+			XFS_SB_VERSION_ADDATTR2(&mp->m_sb);
+			sbfields |= (XFS_SB_VERSIONNUM | XFS_SB_FEATURES2);
+		}
+		if (sbfields) {
 			XFS_SB_UNLOCK(mp, s);
-			xfs_mod_sb(tp, XFS_SB_VERSIONNUM);
+			xfs_mod_sb(tp, sbfields);
 		} else
 			XFS_SB_UNLOCK(mp, s);
 	}
@@ -3988,13 +4021,19 @@ xfs_bmap_compute_maxlevels(
 	 * (a signed 32-bit number, xfs_extnum_t), or by di_anextents
 	 * (a signed 16-bit number, xfs_aextnum_t).
 	 */
-	maxleafents = (whichfork == XFS_DATA_FORK) ? MAXEXTNUM : MAXAEXTNUM;
+	if (whichfork == XFS_DATA_FORK) {
+		maxleafents = MAXEXTNUM;
+		sz = (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) ?
+			mp->m_attroffset : XFS_BMDR_SPACE_CALC(MINDBTPTRS);
+	} else {
+		maxleafents = MAXAEXTNUM;
+		sz = (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) ?
+			mp->m_sb.sb_inodesize - mp->m_attroffset :
+			XFS_BMDR_SPACE_CALC(MINABTPTRS);
+	}
+	maxrootrecs = (int)XFS_BTREE_BLOCK_MAXRECS(sz, xfs_bmdr, 0);
 	minleafrecs = mp->m_bmap_dmnr[0];
 	minnoderecs = mp->m_bmap_dmnr[1];
-	sz = (whichfork == XFS_DATA_FORK) ?
-		mp->m_attroffset :
-		mp->m_sb.sb_inodesize - mp->m_attroffset;
-	maxrootrecs = (int)XFS_BTREE_BLOCK_MAXRECS(sz, xfs_bmdr, 0);
 	maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs;
 	for (level = 1; maxblocks > 1; level++) {
 		if (maxblocks <= maxrootrecs)
@@ -4332,8 +4371,8 @@ xfs_bmap_read_extents(
 	/*
 	 * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out.
 	 */
-	ASSERT(INT_GET(block->bb_level, ARCH_CONVERT) > 0);
-	level = INT_GET(block->bb_level, ARCH_CONVERT);
+	level = be16_to_cpu(block->bb_level);
+	ASSERT(level > 0);
 	pp = XFS_BMAP_BROOT_PTR_ADDR(block, 1, ifp->if_broot_bytes);
 	ASSERT(INT_GET(*pp, ARCH_CONVERT) != NULLDFSBNO);
 	ASSERT(XFS_FSB_TO_AGNO(mp, INT_GET(*pp, ARCH_CONVERT)) < mp->m_sb.sb_agcount);
@@ -4376,7 +4415,7 @@ xfs_bmap_read_extents(
 		xfs_extnum_t	num_recs;
 
 
-		num_recs = INT_GET(block->bb_numrecs, ARCH_CONVERT);
+		num_recs = be16_to_cpu(block->bb_numrecs);
 		if (unlikely(i + num_recs > room)) {
 			ASSERT(i + num_recs <= room);
 			xfs_fs_cmn_err(CE_WARN, ip->i_mount,
@@ -4393,7 +4432,7 @@ xfs_bmap_read_extents(
 		/*
 		 * Read-ahead the next leaf block, if any.
 		 */
-		nextbno = INT_GET(block->bb_rightsib, ARCH_CONVERT);
+		nextbno = be64_to_cpu(block->bb_rightsib);
 		if (nextbno != NULLFSBLOCK)
 			xfs_btree_reada_bufl(mp, nextbno, 1);
 		/*
@@ -4650,7 +4689,7 @@ xfs_bmapi(
 	}
 	if (wr && *firstblock == NULLFSBLOCK) {
 		if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE)
-			minleft = INT_GET(ifp->if_broot->bb_level, ARCH_CONVERT) + 1;
+			minleft = be16_to_cpu(ifp->if_broot->bb_level) + 1;
 		else
 			minleft = 1;
 	} else
@@ -5692,12 +5731,13 @@ xfs_getbmap(
 			out.bmv_offset = XFS_FSB_TO_BB(mp, map[i].br_startoff);
 			out.bmv_length = XFS_FSB_TO_BB(mp, map[i].br_blockcount);
 			ASSERT(map[i].br_startblock != DELAYSTARTBLOCK);
-			if (prealloced &&
-			    map[i].br_startblock == HOLESTARTBLOCK &&
-			    out.bmv_offset + out.bmv_length == bmvend) {
-				/*
-				 * came to hole at end of file
-				 */
+                        if (map[i].br_startblock == HOLESTARTBLOCK &&
+                           ((prealloced && out.bmv_offset + out.bmv_length == bmvend) ||
+                             whichfork == XFS_ATTR_FORK )) {
+                                /*
+                                 * came to hole at end of file or the end of
+                                   attribute fork
+                                 */
 				goto unlock_and_return;
 			} else {
 				out.bmv_block =
@@ -5927,10 +5967,10 @@ xfs_check_block(
 	xfs_bmbt_ptr_t		*pp, *thispa;	/* pointer to block address */
 	xfs_bmbt_key_t		*prevp, *keyp;
 
-	ASSERT(INT_GET(block->bb_level, ARCH_CONVERT) > 0);
+	ASSERT(be16_to_cpu(block->bb_level) > 0);
 
 	prevp = NULL;
-	for( i = 1; i <= INT_GET(block->bb_numrecs, ARCH_CONVERT);i++) {
+	for( i = 1; i <= be16_to_cpu(block->bb_numrecs); i++) {
 		dmxr = mp->m_bmap_dmxr[0];
 
 		if (root) {
@@ -5955,7 +5995,7 @@ xfs_check_block(
 			pp = XFS_BTREE_PTR_ADDR(mp->m_sb.sb_blocksize,
 				xfs_bmbt, block, i, dmxr);
 		}
-		for (j = i+1; j <= INT_GET(block->bb_numrecs, ARCH_CONVERT); j++) {
+		for (j = i+1; j <= be16_to_cpu(block->bb_numrecs); j++) {
 			if (root) {
 				thispa = XFS_BMAP_BROOT_PTR_ADDR(block, j, sz);
 			} else {
@@ -6008,8 +6048,8 @@ xfs_bmap_check_leaf_extents(
 	/*
 	 * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out.
 	 */
-	ASSERT(INT_GET(block->bb_level, ARCH_CONVERT) > 0);
-	level = INT_GET(block->bb_level, ARCH_CONVERT);
+	level = be16_to_cpu(block->bb_level);
+	ASSERT(level > 0);
 	xfs_check_block(block, mp, 1, ifp->if_broot_bytes);
 	pp = XFS_BMAP_BROOT_PTR_ADDR(block, 1, ifp->if_broot_bytes);
 	ASSERT(INT_GET(*pp, ARCH_CONVERT) != NULLDFSBNO);
@@ -6069,13 +6109,13 @@ xfs_bmap_check_leaf_extents(
 		xfs_extnum_t	num_recs;
 
 
-		num_recs = INT_GET(block->bb_numrecs, ARCH_CONVERT);
+		num_recs = be16_to_cpu(block->bb_numrecs);
 
 		/*
 		 * Read-ahead the next leaf block, if any.
 		 */
 
-		nextbno = INT_GET(block->bb_rightsib, ARCH_CONVERT);
+		nextbno = be64_to_cpu(block->bb_rightsib);
 
 		/*
 		 * Check all the extents to make sure they are OK.
@@ -6131,7 +6171,7 @@ error0:
 		xfs_trans_brelse(NULL, bp);
 error_norelse:
 	cmn_err(CE_WARN, "%s: BAD after btree leaves for %d extents",
-		i, __FUNCTION__);
+		__FUNCTION__, i);
 	panic("%s: CORRUPTED BTREE OR SOMETHING", __FUNCTION__);
 	return;
 }
@@ -6172,8 +6212,8 @@ xfs_bmap_count_blocks(
 	 * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out.
 	 */
 	block = ifp->if_broot;
-	ASSERT(INT_GET(block->bb_level, ARCH_CONVERT) > 0);
-	level = INT_GET(block->bb_level, ARCH_CONVERT);
+	level = be16_to_cpu(block->bb_level);
+	ASSERT(level > 0);
 	pp = XFS_BMAP_BROOT_PTR_ADDR(block, 1, ifp->if_broot_bytes);
 	ASSERT(INT_GET(*pp, ARCH_CONVERT) != NULLDFSBNO);
 	ASSERT(XFS_FSB_TO_AGNO(mp, INT_GET(*pp, ARCH_CONVERT)) < mp->m_sb.sb_agcount);
@@ -6218,14 +6258,14 @@ xfs_bmap_count_tree(
 
 	if (--level) {
 		/* Not at node above leafs, count this level of nodes */
-		nextbno = INT_GET(block->bb_rightsib, ARCH_CONVERT);
+		nextbno = be64_to_cpu(block->bb_rightsib);
 		while (nextbno != NULLFSBLOCK) {
 			if ((error = xfs_btree_read_bufl(mp, tp, nextbno,
 				0, &nbp, XFS_BMAP_BTREE_REF)))
 				return error;
 			*count += 1;
 			nextblock = XFS_BUF_TO_BMBT_BLOCK(nbp);
-			nextbno = INT_GET(nextblock->bb_rightsib, ARCH_CONVERT);
+			nextbno = be64_to_cpu(nextblock->bb_rightsib);
 			xfs_trans_brelse(tp, nbp);
 		}
 
@@ -6244,11 +6284,11 @@ xfs_bmap_count_tree(
 	} else {
 		/* count all level 1 nodes and their leaves */
 		for (;;) {
-			nextbno = INT_GET(block->bb_rightsib, ARCH_CONVERT);
-			numrecs = INT_GET(block->bb_numrecs, ARCH_CONVERT);
+			nextbno = be64_to_cpu(block->bb_rightsib);
+			numrecs = be16_to_cpu(block->bb_numrecs);
 			frp = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize,
 				xfs_bmbt, block, 1, mp->m_bmap_dmxr[0]);
-			if (unlikely(xfs_bmap_count_leaves(frp, numrecs, count) < 0)) {
+			if (unlikely(xfs_bmap_disk_count_leaves(frp, numrecs, count) < 0)) {
 				xfs_trans_brelse(tp, bp);
 				XFS_ERROR_REPORT("xfs_bmap_count_tree(2)",
 						 XFS_ERRLEVEL_LOW, mp);
@@ -6280,6 +6320,22 @@ xfs_bmap_count_leaves(
 	int		b;
 
 	for ( b = 1; b <= numrecs; b++, frp++)
+		*count += xfs_bmbt_get_blockcount(frp);
+	return 0;
+}
+
+/*
+ * Count leaf blocks given a pointer to an extent list originally in btree format.
+ */
+int
+xfs_bmap_disk_count_leaves(
+	xfs_bmbt_rec_t		*frp,
+	int			numrecs,
+	int			*count)
+{
+	int		b;
+
+	for ( b = 1; b <= numrecs; b++, frp++)
 		*count += xfs_bmbt_disk_get_blockcount(frp);
 	return 0;
 }