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xfs: pass an on-disk extent to xfs_bmbt_validate_extent 

This prepares for getting rid of the current in-memory extent format.
At the end of the series we will change the calling convention again
to pass the xfs_bmbt_irec structure once it is available everywhere.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig 2017-11-03 10:34:42 -07:00 committed by Darrick J. Wong
parent 4263036100
commit f36bc228e1
3 changed files with 9 additions and 10 deletions
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6
fs/xfs/libxfs/xfs_bmap.c
View File

@ -1260,14 +1260,14 @@ xfs_iread_extents(
frp = XFS_BMBT_REC_ADDR(mp, block, 1);
for (j = 0; j < num_recs; j++, i++, frp++) {
xfs_bmbt_rec_host_t *trp = xfs_iext_get_ext(ifp, i);
trp->l0 = be64_to_cpu(frp->l0);
trp->l1 = be64_to_cpu(frp->l1);
if (!xfs_bmbt_validate_extent(mp, whichfork, trp)) {
if (!xfs_bmbt_validate_extent(mp, whichfork, frp)) {
XFS_ERROR_REPORT("xfs_bmap_read_extents(2)",
XFS_ERRLEVEL_LOW, mp);
error = -EFSCORRUPTED;
goto out_brelse;
}
trp->l0 = be64_to_cpu(frp->l0);
trp->l1 = be64_to_cpu(frp->l1);
trace_xfs_read_extent(ip, i, state, _THIS_IP_);
}
xfs_trans_brelse(tp, bp);

4
fs/xfs/libxfs/xfs_bmap_btree.h
View File

@ -127,9 +127,9 @@ extern struct xfs_btree_cur *xfs_bmbt_init_cursor(struct xfs_mount *,
* Check that the extent does not contain an invalid unwritten extent flag.
*/
static inline bool xfs_bmbt_validate_extent(struct xfs_mount *mp, int whichfork,
struct xfs_bmbt_rec_host *ep)
struct xfs_bmbt_rec *ep)
{
if (ep->l0 >> (64 - BMBT_EXNTFLAG_BITLEN) == 0)
if (get_unaligned_be64(&ep->l0) >> (64 - BMBT_EXNTFLAG_BITLEN) == 0)
return true;
if (whichfork == XFS_DATA_FORK &&
xfs_sb_version_hasextflgbit(&mp->m_sb))

9
fs/xfs/libxfs/xfs_inode_fork.c
View File

@ -371,13 +371,13 @@ xfs_iformat_extents(
dp = (xfs_bmbt_rec_t *) XFS_DFORK_PTR(dip, whichfork);
for (i = 0; i < nex; i++, dp++) {
xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i);
ep->l0 = get_unaligned_be64(&dp->l0);
ep->l1 = get_unaligned_be64(&dp->l1);
if (!xfs_bmbt_validate_extent(mp, whichfork, ep)) {
if (!xfs_bmbt_validate_extent(mp, whichfork, dp)) {
XFS_ERROR_REPORT("xfs_iformat_extents(2)",
XFS_ERRLEVEL_LOW, mp);
return -EFSCORRUPTED;
}
ep->l0 = get_unaligned_be64(&dp->l0);
ep->l1 = get_unaligned_be64(&dp->l1);
trace_xfs_read_extent(ip, i, state, _THIS_IP_);
}
}
@ -764,8 +764,6 @@ xfs_iextents_copy(
for (i = 0; i < nrecs; i++) {
xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i);
ASSERT(xfs_bmbt_validate_extent(ip->i_mount, whichfork, ep));
start_block = xfs_bmbt_get_startblock(ep);
if (isnullstartblock(start_block)) {
/*
@ -779,6 +777,7 @@ xfs_iextents_copy(
/* Translate to on disk format */
put_unaligned_be64(ep->l0, &dp->l0);
put_unaligned_be64(ep->l1, &dp->l1);
ASSERT(xfs_bmbt_validate_extent(ip->i_mount, whichfork, dp));
dp++;
copied++;