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authorDarrick J. Wong <darrick.wong@oracle.com>2018-05-29 22:18:11 -0700
committerDarrick J. Wong <darrick.wong@oracle.com>2018-05-30 08:03:15 -0700
commit7e85bc6c873215f19a0b750febfb097d1f3c3292 (patch)
treef821a9abf0bd86d56af87ef06168a210c8be8fdb /fs
parent04a2b7b254f9c72bdcb819a99d95df8504c9b639 (diff)
downloadlinux-7e85bc6c873215f19a0b750febfb097d1f3c3292.tar.bz2
xfs: add helpers to attach quotas to inodes
Add a helper routine to attach quota information to inodes that are about to undergo repair. If that fails, we need to schedule a quotacheck for the next mount but allow the corrupted metadata repair to continue. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/scrub/repair.c61
-rw-r--r--fs/xfs/scrub/repair.h2
-rw-r--r--fs/xfs/xfs_quota.h16
3 files changed, 79 insertions, 0 deletions
diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c
index 877488ce4bc8..e3e8fba1c99c 100644
--- a/fs/xfs/scrub/repair.c
+++ b/fs/xfs/scrub/repair.c
@@ -42,6 +42,7 @@
#include "xfs_extent_busy.h"
#include "xfs_ag_resv.h"
#include "xfs_trans_space.h"
+#include "xfs_quota.h"
#include "scrub/xfs_scrub.h"
#include "scrub/scrub.h"
#include "scrub/common.h"
@@ -1026,3 +1027,63 @@ xfs_repair_find_ag_btree_roots(
return error;
}
+
+/* Force a quotacheck the next time we mount. */
+void
+xfs_repair_force_quotacheck(
+ struct xfs_scrub_context *sc,
+ uint dqtype)
+{
+ uint flag;
+
+ flag = xfs_quota_chkd_flag(dqtype);
+ if (!(flag & sc->mp->m_qflags))
+ return;
+
+ sc->mp->m_qflags &= ~flag;
+ spin_lock(&sc->mp->m_sb_lock);
+ sc->mp->m_sb.sb_qflags &= ~flag;
+ spin_unlock(&sc->mp->m_sb_lock);
+ xfs_log_sb(sc->tp);
+}
+
+/*
+ * Attach dquots to this inode, or schedule quotacheck to fix them.
+ *
+ * This function ensures that the appropriate dquots are attached to an inode.
+ * We cannot allow the dquot code to allocate an on-disk dquot block here
+ * because we're already in transaction context with the inode locked. The
+ * on-disk dquot should already exist anyway. If the quota code signals
+ * corruption or missing quota information, schedule quotacheck, which will
+ * repair corruptions in the quota metadata.
+ */
+int
+xfs_repair_ino_dqattach(
+ struct xfs_scrub_context *sc)
+{
+ int error;
+
+ error = xfs_qm_dqattach_locked(sc->ip, false);
+ switch (error) {
+ case -EFSBADCRC:
+ case -EFSCORRUPTED:
+ case -ENOENT:
+ xfs_err_ratelimited(sc->mp,
+"inode %llu repair encountered quota error %d, quotacheck forced.",
+ (unsigned long long)sc->ip->i_ino, error);
+ if (XFS_IS_UQUOTA_ON(sc->mp) && !sc->ip->i_udquot)
+ xfs_repair_force_quotacheck(sc, XFS_DQ_USER);
+ if (XFS_IS_GQUOTA_ON(sc->mp) && !sc->ip->i_gdquot)
+ xfs_repair_force_quotacheck(sc, XFS_DQ_GROUP);
+ if (XFS_IS_PQUOTA_ON(sc->mp) && !sc->ip->i_pdquot)
+ xfs_repair_force_quotacheck(sc, XFS_DQ_PROJ);
+ /* fall through */
+ case -ESRCH:
+ error = 0;
+ break;
+ default:
+ break;
+ }
+
+ return error;
+}
diff --git a/fs/xfs/scrub/repair.h b/fs/xfs/scrub/repair.h
index c922ef06b894..e9213e7d653a 100644
--- a/fs/xfs/scrub/repair.h
+++ b/fs/xfs/scrub/repair.h
@@ -96,6 +96,8 @@ int xfs_repair_find_ag_btree_roots(struct xfs_scrub_context *sc,
struct xfs_buf *agf_bp,
struct xfs_repair_find_ag_btree *btree_info,
struct xfs_buf *agfl_bp);
+void xfs_repair_force_quotacheck(struct xfs_scrub_context *sc, uint dqtype);
+int xfs_repair_ino_dqattach(struct xfs_scrub_context *sc);
/* Metadata repairers */
diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h
index 1c79ebbe5236..3edf52b14919 100644
--- a/fs/xfs/xfs_quota.h
+++ b/fs/xfs/xfs_quota.h
@@ -48,6 +48,22 @@ struct xfs_trans;
(XFS_IS_PQUOTA_ON(mp) && \
(mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0))
+static inline uint
+xfs_quota_chkd_flag(
+ uint dqtype)
+{
+ switch (dqtype) {
+ case XFS_DQ_USER:
+ return XFS_UQUOTA_CHKD;
+ case XFS_DQ_GROUP:
+ return XFS_GQUOTA_CHKD;
+ case XFS_DQ_PROJ:
+ return XFS_PQUOTA_CHKD;
+ default:
+ return 0;
+ }
+}
+
/*
* The structure kept inside the xfs_trans_t keep track of dquot changes
* within a transaction and apply them later.