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Commit 8bc763c2 authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

xfs: don't continue scrub if already corrupt 



If we've already decided that something is corrupt, we might as well
abort all the loops and exit as quickly as possible.

Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarBrian Foster <bfoster@redhat.com>
parent eac69e16

fs/xfs/scrub/attr.c

+2 −1
Original line number Diff line number Diff line
@@ -126,8 +126,9 @@ xfs_scrub_xattr_listent( 
	if (args.valuelen != valuelen)

		xfs_scrub_fblock_set_corrupt(sx->sc, XFS_ATTR_FORK,

					     args.blkno);



fail_xref:

	if (sx->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		context->seen_enough = 1;

	return;

}

fs/xfs/scrub/bmap.c

+2 −1
Original line number Diff line number Diff line
@@ -683,7 +683,8 @@ xfs_scrub_bmap( 
	info.lastoff = 0;

	ifp = XFS_IFORK_PTR(ip, whichfork);

	for_each_xfs_iext(ifp, &icur, &irec) {

		if (xfs_scrub_should_terminate(sc, &error))

		if (xfs_scrub_should_terminate(sc, &error) ||

		    (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))

			break;

		if (isnullstartblock(irec.br_startblock))

			continue;

fs/xfs/scrub/dir.c

+27 −8
Original line number Diff line number Diff line
@@ -172,7 +172,7 @@ xfs_scrub_dir_actor( 
	error = xfs_dir_lookup(sdc->sc->tp, ip, &xname, &lookup_ino, NULL);

	if (!xfs_scrub_fblock_process_error(sdc->sc, XFS_DATA_FORK, offset,

			&error))

		goto fail_xref;

		goto out;

	if (lookup_ino != ino) {

		xfs_scrub_fblock_set_corrupt(sdc->sc, XFS_DATA_FORK, offset);

		goto out;
@@ -183,8 +183,13 @@ xfs_scrub_dir_actor( 
	if (error)

		goto out;

out:

	return error;

fail_xref:

	/*

	 * A negative error code returned here is supposed to cause the

	 * dir_emit caller (xfs_readdir) to abort the directory iteration

	 * and return zero to xfs_scrub_directory.

	 */

	if (error == 0 && sdc->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		return -EFSCORRUPTED;

	return error;

}
@@ -240,6 +245,9 @@ xfs_scrub_dir_rec( 
	}

	xfs_scrub_buffer_recheck(ds->sc, bp);



	if (ds->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		goto out_relse;



	dent = (struct xfs_dir2_data_entry *)(((char *)bp->b_addr) + off);



	/* Make sure we got a real directory entry. */
@@ -357,6 +365,9 @@ xfs_scrub_directory_data_bestfree( 


	/* XXX: Check xfs_dir3_data_hdr.pad is zero once we start setting it. */



	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		goto out_buf;



	/* Do the bestfrees correspond to actual free space? */

	bf = d_ops->data_bestfree_p(bp->b_addr);

	smallest_bestfree = UINT_MAX;
@@ -413,14 +424,18 @@ xfs_scrub_directory_data_bestfree( 


		/* Spot check this free entry */

		tag = be16_to_cpu(*xfs_dir2_data_unused_tag_p(dup));

		if (tag != ((char *)dup - (char *)bp->b_addr))

		if (tag != ((char *)dup - (char *)bp->b_addr)) {

			xfs_scrub_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);

			goto out_buf;

		}



		/*

		 * Either this entry is a bestfree or it's smaller than

		 * any of the bestfrees.

		 */

		xfs_scrub_directory_check_free_entry(sc, lblk, bf, dup);

		if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

			goto out_buf;



		/* Move on. */

		newlen = be16_to_cpu(dup->length);
@@ -546,6 +561,8 @@ xfs_scrub_directory_leaf1_bestfree( 
	}

	if (leafhdr.stale != stale)

		xfs_scrub_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);

	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		goto out;



	/* Check all the bestfree entries. */

	for (i = 0; i < bestcount; i++, bestp++) {
@@ -556,9 +573,11 @@ xfs_scrub_directory_leaf1_bestfree( 
				i * args->geo->fsbcount, -1, &dbp);

		if (!xfs_scrub_fblock_process_error(sc, XFS_DATA_FORK, lblk,

				&error))

			continue;

			break;

		xfs_scrub_directory_check_freesp(sc, lblk, dbp, best);

		xfs_trans_brelse(sc->tp, dbp);

		if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

			goto out;

	}

out:

	return error;
@@ -607,7 +626,7 @@ xfs_scrub_directory_free_bestfree( 
				-1, &dbp);

		if (!xfs_scrub_fblock_process_error(sc, XFS_DATA_FORK, lblk,

				&error))

			continue;

			break;

		xfs_scrub_directory_check_freesp(sc, lblk, dbp, best);

		xfs_trans_brelse(sc->tp, dbp);

	}
@@ -656,7 +675,7 @@ xfs_scrub_directory_blocks( 


	/* Iterate all the data extents in the directory... */

	found = xfs_iext_lookup_extent(sc->ip, ifp, lblk, &icur, &got);

	while (found) {

	while (found && !(sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)) {

		/* Block directories only have a single block at offset 0. */

		if (is_block &&

		    (got.br_startoff > 0 ||
@@ -719,7 +738,7 @@ xfs_scrub_directory_blocks( 
	/* Scan for free blocks */

	lblk = free_lblk;

	found = xfs_iext_lookup_extent(sc->ip, ifp, lblk, &icur, &got);

	while (found) {

	while (found && !(sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)) {

		/*

		 * Dirs can't have blocks mapped above 2^32.

		 * Single-block dirs shouldn't even be here.

fs/xfs/scrub/parent.c

+3 −0
Original line number Diff line number Diff line
@@ -147,6 +147,9 @@ xfs_scrub_parent_validate( 


	*try_again = false;



	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		goto out;



	/* '..' must not point to ourselves. */

	if (sc->ip->i_ino == dnum) {

		xfs_scrub_fblock_set_corrupt(sc, XFS_DATA_FORK, 0);