Commit 561f648a authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

xfs: cross-reference the block mappings when possible 



Use an inode's block mappings to cross-reference inode block counters.

Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarDave Chinner <dchinner@redhat.com>
parent 46d9bfb5

fs/xfs/scrub/inode.c

+34 −0
Original line number Diff line number Diff line
@@ -37,6 +37,8 @@ 
#include "xfs_da_format.h"

#include "xfs_reflink.h"

#include "xfs_rmap.h"

#include "xfs_bmap.h"

#include "xfs_bmap_util.h"

#include "scrub/xfs_scrub.h"

#include "scrub/scrub.h"

#include "scrub/common.h"
@@ -626,6 +628,37 @@ xfs_scrub_inode_xref_finobt( 
		xfs_scrub_btree_xref_set_corrupt(sc, sc->sa.fino_cur, 0);

}



/* Cross reference the inode fields with the forks. */

STATIC void

xfs_scrub_inode_xref_bmap(

	struct xfs_scrub_context	*sc,

	struct xfs_dinode		*dip)

{

	xfs_extnum_t			nextents;

	xfs_filblks_t			count;

	xfs_filblks_t			acount;

	int				error;



	/* Walk all the extents to check nextents/naextents/nblocks. */

	error = xfs_bmap_count_blocks(sc->tp, sc->ip, XFS_DATA_FORK,

			&nextents, &count);

	if (!xfs_scrub_should_check_xref(sc, &error, NULL))

		return;

	if (nextents < be32_to_cpu(dip->di_nextents))

		xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino, NULL);



	error = xfs_bmap_count_blocks(sc->tp, sc->ip, XFS_ATTR_FORK,

			&nextents, &acount);

	if (!xfs_scrub_should_check_xref(sc, &error, NULL))

		return;

	if (nextents != be16_to_cpu(dip->di_anextents))

		xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino, NULL);



	/* Check nblocks against the inode. */

	if (count + acount != be64_to_cpu(dip->di_nblocks))

		xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino, NULL);

}



/* Cross-reference with the other btrees. */

STATIC void

xfs_scrub_inode_xref(
@@ -653,6 +686,7 @@ xfs_scrub_inode_xref( 
	xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_INODES);

	xfs_scrub_xref_is_owned_by(sc, agbno, 1, &oinfo);

	xfs_scrub_xref_is_not_shared(sc, agbno, 1);

	xfs_scrub_inode_xref_bmap(sc, dip);



	xfs_scrub_ag_free(sc, &sc->sa);

}