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[XFS] Improve error handling for the zero-fsblock extent detection code.

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SGI-PV: 955302
SGI-Modid: xfs-linux-melb:xfs-kern:26802a

Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
This commit is contained in:
Nathan Scott
2006-09-28 11:03:20 +10:00
committed by Tim Shimmin
parent 948ecdb4c1
commit 572d95f49f
4 changed files with 50 additions and 67 deletions
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27
fs/xfs/xfs_bmap.c
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@@ -3705,7 +3705,7 @@ STATIC xfs_bmbt_rec_t * /* pointer to found extent entry */
xfs_bmap_search_extents(
xfs_inode_t *ip, /* incore inode pointer */
xfs_fileoff_t bno, /* block number searched for */
int whichfork, /* data or attr fork */
int fork, /* data or attr fork */
int *eofp, /* out: end of file found */
xfs_extnum_t *lastxp, /* out: last extent index */
xfs_bmbt_irec_t *gotp, /* out: extent entry found */
@@ -3713,25 +3713,28 @@ xfs_bmap_search_extents(
{
xfs_ifork_t *ifp; /* inode fork pointer */
xfs_bmbt_rec_t *ep; /* extent record pointer */
int rt; /* realtime flag */
XFS_STATS_INC(xs_look_exlist);
ifp = XFS_IFORK_PTR(ip, whichfork);
ifp = XFS_IFORK_PTR(ip, fork);
ep = xfs_bmap_search_multi_extents(ifp, bno, eofp, lastxp, gotp, prevp);
rt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip);
if (unlikely(!rt && !gotp->br_startblock && (*lastxp != NULLEXTNUM))) {
cmn_err(CE_PANIC,"Access to block zero: fs: <%s> inode: %lld "
"start_block : %llx start_off : %llx blkcnt : %llx "
"extent-state : %x \n",
(ip->i_mount)->m_fsname, (long long)ip->i_ino,
if (unlikely(!(gotp->br_startblock) && (*lastxp != NULLEXTNUM) &&
!(XFS_IS_REALTIME_INODE(ip) && fork == XFS_DATA_FORK))) {
xfs_cmn_err(XFS_PTAG_FSBLOCK_ZERO, CE_ALERT, ip->i_mount,
"Access to block zero in inode %llu "
"start_block: %llx start_off: %llx "
"blkcnt: %llx extent-state: %x lastx: %x\n",
(unsigned long long)ip->i_ino,
(unsigned long long)gotp->br_startblock,
(unsigned long long)gotp->br_startoff,
(unsigned long long)gotp->br_blockcount,
gotp->br_state);
}
return ep;
gotp->br_state, *lastxp);
*lastxp = NULLEXTNUM;
*eofp = 1;
return NULL;
}
return ep;
}