xfs: scrub the data fork of the realtime inodes

The realtime bitmap and summary inodes live on the metadata device, so
we can scrub their data forks with the regular scrubbers.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>

diff --git a/fs/xfs/scrub/rtbitmap.c b/fs/xfs/scrub/rtbitmap.c
index 8b048f1..0fa3ef5 100644 (file)
--- a/fs/xfs/scrub/rtbitmap.c
+++ b/fs/xfs/scrub/rtbitmap.c
@@ -82,6 +82,11 @@ xfs_scrub_rtbitmap(
 {
        int                             error;
 
+       /* Invoke the fork scrubber. */
+       error = xfs_scrub_metadata_inode_forks(sc);
+       if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
+               return error;
+
        error = xfs_rtalloc_query_all(sc->tp, xfs_scrub_rtbitmap_rec, sc);
        if (!xfs_scrub_fblock_process_error(sc, XFS_DATA_FORK, 0, &error))
                goto out;
@@ -95,8 +100,35 @@ int
 xfs_scrub_rtsummary(
        struct xfs_scrub_context        *sc)
 {
+       struct xfs_inode                *rsumip = sc->mp->m_rsumip;
+       struct xfs_inode                *old_ip = sc->ip;
+       uint                            old_ilock_flags = sc->ilock_flags;
+       int                             error = 0;
+
+       /*
+        * We ILOCK'd the rt bitmap ip in the setup routine, now lock the
+        * rt summary ip in compliance with the rt inode locking rules.
+        *
+        * Since we switch sc->ip to rsumip we have to save the old ilock
+        * flags so that we don't mix up the inode state that @sc tracks.
+        */
+       sc->ip = rsumip;
+       sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTSUM;
+       xfs_ilock(sc->ip, sc->ilock_flags);
+
+       /* Invoke the fork scrubber. */
+       error = xfs_scrub_metadata_inode_forks(sc);
+       if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
+               goto out;
+
        /* XXX: implement this some day */
-       return -ENOENT;
+       xfs_scrub_set_incomplete(sc);
+out:
+       /* Switch back to the rtbitmap inode and lock flags. */
+       xfs_iunlock(sc->ip, sc->ilock_flags);
+       sc->ilock_flags = old_ilock_flags;
+       sc->ip = old_ip;
+       return error;
 }