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xfs: pass struct xfs_bmbt_irec to xfs_bmbt_validate_extent

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This removed an unaligned load per extent, as well as the manual poking
into the on-disk extent format.

Signed-off-by: Christoph Hellwig <hch@lst.de>
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 10:34:47 -07:00 committed by Darrick J. Wong
parent c38ccf5990
commit dac9c9b137
3 changed files with 7 additions and 7 deletions
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4
fs/xfs/libxfs/xfs_bmap.c
View File

@ -1261,13 +1261,13 @@ xfs_iread_extents(
*/
frp = XFS_BMBT_REC_ADDR(mp, block, 1);
for (j = 0; j < num_recs; j++, frp++, i++) {
if (!xfs_bmbt_validate_extent(mp, whichfork, frp)) {
xfs_bmbt_disk_get_all(frp, &new);
if (!xfs_bmbt_validate_extent(mp, whichfork, &new)) {
XFS_ERROR_REPORT("xfs_bmap_read_extents(2)",
XFS_ERRLEVEL_LOW, mp);
error = -EFSCORRUPTED;
goto out_brelse;
}
xfs_bmbt_disk_get_all(frp, &new);
xfs_iext_insert(ip, &icur, &new, state);
trace_xfs_read_extent(ip, &icur, state, _THIS_IP_);
xfs_iext_next(ifp, &icur);

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

@ -122,9 +122,9 @@ 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 *ep)
struct xfs_bmbt_irec *irec)
{
if (get_unaligned_be64(&ep->l0) >> (64 - BMBT_EXNTFLAG_BITLEN) == 0)
if (irec->br_state == XFS_EXT_NORM)
return true;
if (whichfork == XFS_DATA_FORK &&
xfs_sb_version_hasextflgbit(&mp->m_sb))

6
fs/xfs/libxfs/xfs_inode_fork.c
View File

@ -355,13 +355,13 @@ xfs_iformat_extents(
xfs_iext_first(ifp, &icur);
for (i = 0; i < nex; i++, dp++) {
if (!xfs_bmbt_validate_extent(mp, whichfork, dp)) {
xfs_bmbt_disk_get_all(dp, &new);
if (!xfs_bmbt_validate_extent(mp, whichfork, &new)) {
XFS_ERROR_REPORT("xfs_iformat_extents(2)",
XFS_ERRLEVEL_LOW, mp);
return -EFSCORRUPTED;
}
xfs_bmbt_disk_get_all(dp, &new);
xfs_iext_insert(ip, &icur, &new, state);
trace_xfs_read_extent(ip, &icur, state, _THIS_IP_);
xfs_iext_next(ifp, &icur);
@ -704,9 +704,9 @@ xfs_iextents_copy(
for_each_xfs_iext(ifp, &icur, &rec) {
if (isnullstartblock(rec.br_startblock))
continue;
ASSERT(xfs_bmbt_validate_extent(ip->i_mount, whichfork, &rec));
xfs_bmbt_disk_set_all(dp, &rec);
trace_xfs_write_extent(ip, &icur, state, _RET_IP_);
ASSERT(xfs_bmbt_validate_extent(ip->i_mount, whichfork, dp));
copied += sizeof(struct xfs_bmbt_rec);
dp++;
}