From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Replace the quota scrubber's open-coded data fork scrubber with a
redirected call to the bmapbtd scrubber. This strengthens the quota
scrub to include all the cross-referencing that it does.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
fs/xfs/scrub/quota.c | 95 ++++++++++++++++++++++++++++----------------------
1 file changed, 54 insertions(+), 41 deletions(-)
diff --git a/fs/xfs/scrub/quota.c b/fs/xfs/scrub/quota.c
index 1068a91..67f94c4 100644
--- a/fs/xfs/scrub/quota.c
+++ b/fs/xfs/scrub/quota.c
@@ -207,65 +207,78 @@ xfs_scrub_quota_item(
return 0;
}
-/* Scrub all of a quota type's items. */
-int
-xfs_scrub_quota(
+/* Check the quota's data fork. */
+STATIC int
+xfs_scrub_quota_data_fork(
struct xfs_scrub_context *sc)
{
struct xfs_bmbt_irec irec = { 0 };
- struct xfs_scrub_quota_info sqi;
- struct xfs_mount *mp = sc->mp;
- struct xfs_quotainfo *qi = mp->m_quotainfo;
+ struct xfs_iext_cursor icur;
+ struct xfs_scrub_metadata fake_sm;
+ struct xfs_scrub_metadata *real_sm = sc->sm;
+ struct xfs_quotainfo *qi = sc->mp->m_quotainfo;
+ struct xfs_ifork *ifp;
xfs_fileoff_t max_dqid_off;
- xfs_fileoff_t off = 0;
- uint dqtype;
- int nimaps;
int error = 0;
- dqtype = xfs_scrub_quota_to_dqtype(sc);
-
- /* Look for problem extents. */
+ /* Quotas don't live on the rt device. */
if (sc->ip->i_d.di_flags & XFS_DIFLAG_REALTIME) {
xfs_scrub_ino_set_corrupt(sc, sc->ip->i_ino);
- goto out;
+ return 0;
}
+
+ /* Invoke the data fork scrubber. */
+ memcpy(&fake_sm, real_sm, sizeof(fake_sm));
+ fake_sm.sm_type = XFS_SCRUB_TYPE_BMBTD;
+ fake_sm.sm_flags &= ~XFS_SCRUB_FLAGS_OUT;
+ sc->sm = &fake_sm;
+ error = xfs_scrub_bmap_data(sc);
+ sc->sm = real_sm;
+ if (error)
+ return error;
+ sc->sm->sm_flags |= (fake_sm.sm_flags & XFS_SCRUB_FLAGS_OUT);
+ if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
+ return error;
+
+ /* Check for data fork problems that apply only to quota files. */
max_dqid_off = ((xfs_dqid_t)-1) / qi->qi_dqperchunk;
- while (1) {
+ ifp = XFS_IFORK_PTR(sc->ip, XFS_DATA_FORK);
+ for_each_xfs_iext(ifp, &icur, &irec) {
if (xfs_scrub_should_terminate(sc, &error))
break;
-
- off = irec.br_startoff + irec.br_blockcount;
- nimaps = 1;
- error = xfs_bmapi_read(sc->ip, off, -1, &irec, &nimaps,
- XFS_BMAPI_ENTIRE);
- if (!xfs_scrub_fblock_process_error(sc, XFS_DATA_FORK, off,
- &error))
- goto out;
- if (!nimaps)
- break;
- if (irec.br_startblock == HOLESTARTBLOCK)
- continue;
-
- /* Check the extent record doesn't point to crap. */
- if (irec.br_startblock + irec.br_blockcount <=
- irec.br_startblock)
- xfs_scrub_fblock_set_corrupt(sc, XFS_DATA_FORK,
- irec.br_startoff);
- if (!xfs_verify_fsbno(mp, irec.br_startblock) ||
- !xfs_verify_fsbno(mp, irec.br_startblock +
- irec.br_blockcount - 1))
- xfs_scrub_fblock_set_corrupt(sc, XFS_DATA_FORK,
- irec.br_startoff);
-
/*
- * Unwritten extents or blocks mapped above the highest
+ * delalloc extents or blocks mapped above the highest
* quota id shouldn't happen.
*/
if (isnullstartblock(irec.br_startblock) ||
irec.br_startoff > max_dqid_off ||
- irec.br_startoff + irec.br_blockcount > max_dqid_off + 1)
- xfs_scrub_fblock_set_corrupt(sc, XFS_DATA_FORK, off);
+ irec.br_startoff + irec.br_blockcount > max_dqid_off + 1) {
+ xfs_scrub_fblock_set_corrupt(sc, XFS_DATA_FORK,
+ irec.br_startoff);
+ break;
+ }
}
+
+ return error;
+}
+
+/* Scrub all of a quota type's items. */
+int
+xfs_scrub_quota(
+ struct xfs_scrub_context *sc)
+{
+ struct xfs_scrub_quota_info sqi;
+ struct xfs_mount *mp = sc->mp;
+ struct xfs_quotainfo *qi = mp->m_quotainfo;
+ uint dqtype;
+ int error = 0;
+
+ dqtype = xfs_scrub_quota_to_dqtype(sc);
+
+ /* Look for problem extents. */
+ error = xfs_scrub_quota_data_fork(sc);
+ if (error)
+ goto out;
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
goto out;
--
To unsubscribe from this list: send the line "unsubscribe linux-xfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
