[PATCH 28/37] xfs: repair inodes that have realtime extents

Darrick J. Wong
2024-12-13T01:07:54Z

From: Darrick J. Wong <djwong@kernel.org>

Plumb into the inode core repair code the ability to search for extents
on realtime devices.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
---
fs/xfs/scrub/inode_repair.c | 58 ++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 57 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/scrub/inode_repair.c b/fs/xfs/scrub/inode_repair.c
index a94f9df0ca78f6..816e81330ffc99 100644
--- a/fs/xfs/scrub/inode_repair.c
+++ b/fs/xfs/scrub/inode_repair.c
@@ -38,6 +38,8 @@
#include "xfs_log_priv.h"
#include "xfs_health.h"
#include "xfs_symlink_remote.h"
+#include "xfs_rtgroup.h"
+#include "xfs_rtrmap_btree.h"
#include "scrub/xfs_scrub.h"
#include "scrub/scrub.h"
#include "scrub/common.h"
@@ -773,17 +775,71 @@ xrep_dinode_count_ag_rmaps(
return error;
}

+/* Count extents and blocks for an inode given an rt rmap. */
+STATIC int
+xrep_dinode_walk_rtrmap(
+ struct xfs_btree_cur *cur,
+ const struct xfs_rmap_irec *rec,
+ void *priv)
+{
+ struct xrep_inode *ri = priv;
+ int error = 0;
+
+ if (xchk_should_terminate(ri->sc, &error))
+ return error;
+
+ /* We only care about this inode. */
+ if (rec->rm_owner != ri->sc->sm->sm_ino)
+ return 0;
+
+ if (rec->rm_flags & (XFS_RMAP_ATTR_FORK | XFS_RMAP_BMBT_BLOCK))
+ return -EFSCORRUPTED;
+
+ ri->rt_blocks += rec->rm_blockcount;
+ ri->rt_extents++;
+ return 0;
+}
+
+/* Count extents and blocks for an inode from all realtime rmap data. */
+STATIC int
+xrep_dinode_count_rtgroup_rmaps(
+ struct xrep_inode *ri,
+ struct xfs_rtgroup *rtg)
+{
+ struct xfs_scrub *sc = ri->sc;
+ int error;
+
+ error = xrep_rtgroup_init(sc, rtg, &sc->sr, XFS_RTGLOCK_RMAP);
+ if (error)
+ return error;
+
+ error = xfs_rmap_query_all(sc->sr.rmap_cur, xrep_dinode_walk_rtrmap,
+ ri);
+ xchk_rtgroup_btcur_free(&sc->sr);
+ xchk_rtgroup_free(sc, &sc->sr);
+ return error;
+}
+
/* Count extents and blocks for a given inode from all rmap data. */
STATIC int
xrep_dinode_count_rmaps(
struct xrep_inode *ri)
{
struct xfs_perag *pag = NULL;
+ struct xfs_rtgroup *rtg = NULL;
int error;

- if (!xfs_has_rmapbt(ri->sc->mp) || xfs_has_realtime(ri->sc->mp))
+ if (!xfs_has_rmapbt(ri->sc->mp))
return -EOPNOTSUPP;

+ while ((rtg = xfs_rtgroup_next(ri->sc->mp, rtg))) {
+ error = xrep_dinode_count_rtgroup_rmaps(ri, rtg);
+ if (error) {
+ xfs_rtgroup_rele(rtg);
+ return error;
+ }
+ }
+
while ((pag = xfs_perag_next(ri->sc->mp, pag))) {
error = xrep_dinode_count_ag_rmaps(ri, pag);
if (error) {