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-rw-r--r--fs/xfs/xfs_bmap.c244
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;
}
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