[PATCH 12/21] xfs: repair the AGF and AGFL

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From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>

Regenerate the AGF and AGFL from the rmap data.

Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
 fs/xfs/scrub/agheader_repair.c |  491 ++++++++++++++++++++++++++++++++++++++++
 fs/xfs/scrub/repair.h          |    4 
 fs/xfs/scrub/scrub.c           |    2 
 3 files changed, 497 insertions(+)


diff --git a/fs/xfs/scrub/agheader_repair.c b/fs/xfs/scrub/agheader_repair.c
index 4bd0d79..a73ce69 100644
--- a/fs/xfs/scrub/agheader_repair.c
+++ b/fs/xfs/scrub/agheader_repair.c
@@ -31,12 +31,18 @@
 #include "xfs_sb.h"
 #include "xfs_inode.h"
 #include "xfs_alloc.h"
+#include "xfs_alloc_btree.h"
 #include "xfs_ialloc.h"
+#include "xfs_ialloc_btree.h"
 #include "xfs_rmap.h"
+#include "xfs_rmap_btree.h"
+#include "xfs_refcount.h"
+#include "xfs_refcount_btree.h"
 #include "scrub/xfs_scrub.h"
 #include "scrub/scrub.h"
 #include "scrub/common.h"
 #include "scrub/trace.h"
+#include "scrub/repair.h"
 
 /* Superblock */
 
@@ -74,3 +80,488 @@ xfs_repair_superblock(
 	xfs_trans_log_buf(sc->tp, bp, 0, mp->m_sb.sb_sectsize - 1);
 	return error;
 }
+
+/* AGF */
+
+struct xfs_repair_agf_allocbt {
+	struct xfs_scrub_context	*sc;
+	xfs_agblock_t			freeblks;
+	xfs_agblock_t			longest;
+};
+
+/* Record free space shape information. */
+STATIC int
+xfs_repair_agf_walk_allocbt(
+	struct xfs_btree_cur		*cur,
+	struct xfs_alloc_rec_incore	*rec,
+	void				*priv)
+{
+	struct xfs_repair_agf_allocbt	*raa = priv;
+	int				error = 0;
+
+	if (xfs_scrub_should_terminate(raa->sc, &error))
+		return error;
+
+	raa->freeblks += rec->ar_blockcount;
+	if (rec->ar_blockcount > raa->longest)
+		raa->longest = rec->ar_blockcount;
+	return error;
+}
+
+/* Does this AGFL look sane? */
+STATIC int
+xfs_repair_agf_check_agfl(
+	struct xfs_scrub_context	*sc,
+	struct xfs_agf			*agf,
+	__be32				*agfl_bno)
+{
+	struct xfs_mount		*mp = sc->mp;
+	xfs_agblock_t			bno;
+	unsigned int			flfirst;
+	unsigned int			fllast;
+	int				i;
+
+	if (agf->agf_flcount == cpu_to_be32(0))
+		return 0;
+
+	flfirst = be32_to_cpu(agf->agf_flfirst);
+	fllast = be32_to_cpu(agf->agf_fllast);
+
+	/* first to last is a consecutive list. */
+	if (fllast >= flfirst) {
+		for (i = flfirst; i <= fllast; i++) {
+			bno = be32_to_cpu(agfl_bno[i]);
+			if (!xfs_verify_agbno(mp, sc->sa.agno, bno))
+				return -EFSCORRUPTED;
+		}
+
+		return 0;
+	}
+
+	/* first to the end */
+	for (i = flfirst; i < xfs_agfl_size(mp); i++) {
+		bno = be32_to_cpu(agfl_bno[i]);
+		if (!xfs_verify_agbno(mp, sc->sa.agno, bno))
+			return -EFSCORRUPTED;
+	}
+
+	/* the start to last. */
+	for (i = 0; i <= fllast; i++) {
+		bno = be32_to_cpu(agfl_bno[i]);
+		if (!xfs_verify_agbno(mp, sc->sa.agno, bno))
+			return -EFSCORRUPTED;
+	}
+	return 0;
+}
+
+/* Repair the AGF. */
+int
+xfs_repair_agf(
+	struct xfs_scrub_context	*sc)
+{
+	struct xfs_repair_find_ag_btree	fab[] = {
+		{
+			.rmap_owner = XFS_RMAP_OWN_AG,
+			.buf_ops = &xfs_allocbt_buf_ops,
+			.magic = XFS_ABTB_CRC_MAGIC,
+		},
+		{
+			.rmap_owner = XFS_RMAP_OWN_AG,
+			.buf_ops = &xfs_allocbt_buf_ops,
+			.magic = XFS_ABTC_CRC_MAGIC,
+		},
+		{
+			.rmap_owner = XFS_RMAP_OWN_AG,
+			.buf_ops = &xfs_rmapbt_buf_ops,
+			.magic = XFS_RMAP_CRC_MAGIC,
+		},
+		{
+			.rmap_owner = XFS_RMAP_OWN_REFC,
+			.buf_ops = &xfs_refcountbt_buf_ops,
+			.magic = XFS_REFC_CRC_MAGIC,
+		},
+		{
+			.buf_ops = NULL,
+		},
+	};
+	struct xfs_repair_agf_allocbt	raa;
+	struct xfs_agf			old_agf;
+	struct xfs_mount		*mp = sc->mp;
+	struct xfs_buf			*agf_bp;
+	struct xfs_buf			*agfl_bp;
+	struct xfs_agf			*agf;
+	struct xfs_btree_cur		*cur = NULL;
+	struct xfs_perag		*pag;
+	xfs_agblock_t			blocks;
+	xfs_agblock_t			freesp_blocks;
+	int				error;
+
+	/* We require the rmapbt to rebuild anything. */
+	if (!xfs_sb_version_hasrmapbt(&mp->m_sb))
+		return -EOPNOTSUPP;
+
+	memset(&raa, 0, sizeof(raa));
+	error = xfs_trans_read_buf(mp, sc->tp, mp->m_ddev_targp,
+			XFS_AG_DADDR(mp, sc->sa.agno, XFS_AGF_DADDR(mp)),
+			XFS_FSS_TO_BB(mp, 1), 0, &agf_bp, NULL);
+	if (error)
+		return error;
+	agf_bp->b_ops = &xfs_agf_buf_ops;
+
+	/*
+	 * Load the AGFL so that we can screen out OWN_AG blocks that
+	 * are on the AGFL now; these blocks might have once been part
+	 * of the bno/cnt/rmap btrees but are not now.
+	 */
+	error = xfs_alloc_read_agfl(mp, sc->tp, sc->sa.agno, &agfl_bp);
+	if (error)
+		return error;
+	error = xfs_repair_agf_check_agfl(sc, XFS_BUF_TO_AGF(agf_bp),
+			XFS_BUF_TO_AGFL_BNO(mp, agfl_bp));
+	if (error)
+		return error;
+
+	/* Find the btree roots. */
+	error = xfs_repair_find_ag_btree_roots(sc, agf_bp, fab, agfl_bp);
+	if (error)
+		return error;
+	if (fab[0].root == NULLAGBLOCK || fab[0].level > XFS_BTREE_MAXLEVELS ||
+	    fab[1].root == NULLAGBLOCK || fab[1].level > XFS_BTREE_MAXLEVELS ||
+	    fab[2].root == NULLAGBLOCK || fab[2].level > XFS_BTREE_MAXLEVELS)
+		return -EFSCORRUPTED;
+	if (xfs_sb_version_hasreflink(&mp->m_sb) &&
+	    (fab[3].root == NULLAGBLOCK || fab[3].level > XFS_BTREE_MAXLEVELS))
+		return -EFSCORRUPTED;
+
+	/* Start rewriting the header. */
+	agf = XFS_BUF_TO_AGF(agf_bp);
+	old_agf = *agf;
+	/*
+	 * We relied on the rmapbt to reconstruct the AGF.  If we get a
+	 * different root then something's seriously wrong.
+	 */
+	if (be32_to_cpu(old_agf.agf_roots[XFS_BTNUM_RMAPi]) != fab[2].root)
+		return -EFSCORRUPTED;
+	memset(agf, 0, mp->m_sb.sb_sectsize);
+	agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC);
+	agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION);
+	agf->agf_seqno = cpu_to_be32(sc->sa.agno);
+	agf->agf_length = cpu_to_be32(xfs_ag_block_count(mp, sc->sa.agno));
+	agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(fab[0].root);
+	agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(fab[1].root);
+	agf->agf_roots[XFS_BTNUM_RMAPi] = cpu_to_be32(fab[2].root);
+	agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(fab[0].level);
+	agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(fab[1].level);
+	agf->agf_levels[XFS_BTNUM_RMAPi] = cpu_to_be32(fab[2].level);
+	agf->agf_flfirst = old_agf.agf_flfirst;
+	agf->agf_fllast = old_agf.agf_fllast;
+	agf->agf_flcount = old_agf.agf_flcount;
+	if (xfs_sb_version_hascrc(&mp->m_sb))
+		uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid);
+	if (xfs_sb_version_hasreflink(&mp->m_sb)) {
+		agf->agf_refcount_root = cpu_to_be32(fab[3].root);
+		agf->agf_refcount_level = cpu_to_be32(fab[3].level);
+	}
+
+	/* Update the AGF counters from the bnobt. */
+	cur = xfs_allocbt_init_cursor(mp, sc->tp, agf_bp, sc->sa.agno,
+			XFS_BTNUM_BNO);
+	raa.sc = sc;
+	error = xfs_alloc_query_all(cur, xfs_repair_agf_walk_allocbt, &raa);
+	if (error)
+		goto err;
+	error = xfs_btree_count_blocks(cur, &blocks);
+	if (error)
+		goto err;
+	xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
+	freesp_blocks = blocks - 1;
+	agf->agf_freeblks = cpu_to_be32(raa.freeblks);
+	agf->agf_longest = cpu_to_be32(raa.longest);
+
+	/* Update the AGF counters from the cntbt. */
+	cur = xfs_allocbt_init_cursor(mp, sc->tp, agf_bp, sc->sa.agno,
+			XFS_BTNUM_CNT);
+	error = xfs_btree_count_blocks(cur, &blocks);
+	if (error)
+		goto err;
+	xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
+	freesp_blocks += blocks - 1;
+
+	/* Update the AGF counters from the rmapbt. */
+	cur = xfs_rmapbt_init_cursor(mp, sc->tp, agf_bp, sc->sa.agno);
+	error = xfs_btree_count_blocks(cur, &blocks);
+	if (error)
+		goto err;
+	xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
+	agf->agf_rmap_blocks = cpu_to_be32(blocks);
+	freesp_blocks += blocks - 1;
+
+	/* Update the AGF counters from the refcountbt. */
+	if (xfs_sb_version_hasreflink(&mp->m_sb)) {
+		cur = xfs_refcountbt_init_cursor(mp, sc->tp, agf_bp,
+				sc->sa.agno, NULL);
+		error = xfs_btree_count_blocks(cur, &blocks);
+		if (error)
+			goto err;
+		xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
+		agf->agf_refcount_blocks = cpu_to_be32(blocks);
+	}
+	agf->agf_btreeblks = cpu_to_be32(freesp_blocks);
+	cur = NULL;
+
+	/* Trigger reinitialization of the in-core data. */
+	if (raa.freeblks != be32_to_cpu(old_agf.agf_freeblks) ||
+	    freesp_blocks != be32_to_cpu(old_agf.agf_btreeblks) ||
+	    raa.longest != be32_to_cpu(old_agf.agf_longest) ||
+	    fab[0].level != be32_to_cpu(old_agf.agf_levels[XFS_BTNUM_BNOi]) ||
+	    fab[1].level != be32_to_cpu(old_agf.agf_levels[XFS_BTNUM_CNTi]) ||
+	    fab[2].level != be32_to_cpu(old_agf.agf_levels[XFS_BTNUM_RMAPi]) ||
+	    fab[3].level != be32_to_cpu(old_agf.agf_refcount_level)) {
+		pag = xfs_perag_get(mp, sc->sa.agno);
+		if (pag->pagf_init) {
+			pag->pagf_freeblks = be32_to_cpu(agf->agf_freeblks);
+			pag->pagf_btreeblks = be32_to_cpu(agf->agf_btreeblks);
+			pag->pagf_flcount = be32_to_cpu(agf->agf_flcount);
+			pag->pagf_longest = be32_to_cpu(agf->agf_longest);
+			pag->pagf_levels[XFS_BTNUM_BNOi] =
+				be32_to_cpu(agf->agf_levels[XFS_BTNUM_BNOi]);
+			pag->pagf_levels[XFS_BTNUM_CNTi] =
+				be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNTi]);
+			pag->pagf_levels[XFS_BTNUM_RMAPi] =
+				be32_to_cpu(agf->agf_levels[XFS_BTNUM_RMAPi]);
+			pag->pagf_refcount_level =
+				be32_to_cpu(agf->agf_refcount_level);
+		}
+		xfs_perag_put(pag);
+		sc->reset_counters = true;
+	}
+
+	/* Write this to disk. */
+	xfs_trans_buf_set_type(sc->tp, agf_bp, XFS_BLFT_AGF_BUF);
+	xfs_trans_log_buf(sc->tp, agf_bp, 0, mp->m_sb.sb_sectsize - 1);
+	return error;
+
+err:
+	if (cur)
+		xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR :
+				XFS_BTREE_NOERROR);
+	*agf = old_agf;
+	return error;
+}
+
+/* AGFL */
+
+struct xfs_repair_agfl {
+	struct xfs_repair_extent_list	freesp_list;
+	struct xfs_repair_extent_list	agmeta_list;
+	struct xfs_scrub_context	*sc;
+};
+
+/* Record all freespace information. */
+STATIC int
+xfs_repair_agfl_rmap_fn(
+	struct xfs_btree_cur		*cur,
+	struct xfs_rmap_irec		*rec,
+	void				*priv)
+{
+	struct xfs_repair_agfl		*ra = priv;
+	struct xfs_buf			*bp;
+	xfs_fsblock_t			fsb;
+	int				i;
+	int				error = 0;
+
+	if (xfs_scrub_should_terminate(ra->sc, &error))
+		return error;
+
+	/* Record all the OWN_AG blocks... */
+	if (rec->rm_owner == XFS_RMAP_OWN_AG) {
+		fsb = XFS_AGB_TO_FSB(cur->bc_mp, cur->bc_private.a.agno,
+				rec->rm_startblock);
+		error = xfs_repair_collect_btree_extent(ra->sc,
+				&ra->freesp_list, fsb, rec->rm_blockcount);
+		if (error)
+			return error;
+	}
+
+	/* ...and all the rmapbt blocks... */
+	for (i = 0; i < cur->bc_nlevels && cur->bc_ptrs[i] == 1; i++) {
+		xfs_btree_get_block(cur, i, &bp);
+		if (!bp)
+			continue;
+		fsb = XFS_DADDR_TO_FSB(cur->bc_mp, bp->b_bn);
+		error = xfs_repair_collect_btree_extent(ra->sc,
+				&ra->agmeta_list, fsb, 1);
+		if (error)
+			return error;
+	}
+
+	return 0;
+}
+
+/* Add a btree block to the agmeta list. */
+STATIC int
+xfs_repair_agfl_visit_btblock(
+	struct xfs_btree_cur		*cur,
+	int				level,
+	void				*priv)
+{
+	struct xfs_repair_agfl		*ra = priv;
+	struct xfs_buf			*bp;
+	xfs_fsblock_t			fsb;
+	int				error = 0;
+
+	if (xfs_scrub_should_terminate(ra->sc, &error))
+		return error;
+
+	xfs_btree_get_block(cur, level, &bp);
+	if (!bp)
+		return 0;
+
+	fsb = XFS_DADDR_TO_FSB(cur->bc_mp, bp->b_bn);
+	return xfs_repair_collect_btree_extent(ra->sc, &ra->agmeta_list,
+			fsb, 1);
+}
+
+/* Repair the AGFL. */
+int
+xfs_repair_agfl(
+	struct xfs_scrub_context	*sc)
+{
+	struct xfs_repair_agfl		ra;
+	struct xfs_owner_info		oinfo;
+	struct xfs_mount		*mp = sc->mp;
+	struct xfs_buf			*agf_bp;
+	struct xfs_buf			*agfl_bp;
+	struct xfs_agf			*agf;
+	struct xfs_agfl			*agfl;
+	struct xfs_btree_cur		*cur = NULL;
+	struct xfs_perag		*pag;
+	__be32				*agfl_bno;
+	struct xfs_repair_extent	*rae;
+	struct xfs_repair_extent	*n;
+	xfs_agblock_t			flcount;
+	xfs_agblock_t			agbno;
+	xfs_agblock_t			bno;
+	xfs_agblock_t			old_flcount;
+	int				error;
+
+	/* We require the rmapbt to rebuild anything. */
+	if (!xfs_sb_version_hasrmapbt(&mp->m_sb))
+		return -EOPNOTSUPP;
+
+	xfs_repair_init_extent_list(&ra.freesp_list);
+	xfs_repair_init_extent_list(&ra.agmeta_list);
+	ra.sc = sc;
+
+	error = xfs_alloc_read_agf(mp, sc->tp, sc->sa.agno, 0, &agf_bp);
+	if (error)
+		return error;
+	if (!agf_bp)
+		return -ENOMEM;
+
+	error = xfs_trans_read_buf(mp, sc->tp, mp->m_ddev_targp,
+			XFS_AG_DADDR(mp, sc->sa.agno, XFS_AGFL_DADDR(mp)),
+			XFS_FSS_TO_BB(mp, 1), 0, &agfl_bp, NULL);
+	if (error)
+		return error;
+	agfl_bp->b_ops = &xfs_agfl_buf_ops;
+
+	/* Find all space used by the free space btrees & rmapbt. */
+	cur = xfs_rmapbt_init_cursor(mp, sc->tp, agf_bp, sc->sa.agno);
+	error = xfs_rmap_query_all(cur, xfs_repair_agfl_rmap_fn, &ra);
+	if (error)
+		goto err;
+	xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
+
+	/* Find all space used by bnobt. */
+	cur = xfs_allocbt_init_cursor(mp, sc->tp, agf_bp, sc->sa.agno,
+			XFS_BTNUM_BNO);
+	error = xfs_btree_visit_blocks(cur, xfs_repair_agfl_visit_btblock,
+			&ra);
+	if (error)
+		goto err;
+	xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
+
+	/* Find all space used by cntbt. */
+	cur = xfs_allocbt_init_cursor(mp, sc->tp, agf_bp, sc->sa.agno,
+			XFS_BTNUM_CNT);
+	error = xfs_btree_visit_blocks(cur, xfs_repair_agfl_visit_btblock,
+			&ra);
+	if (error)
+		goto err;
+	xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
+	cur = NULL;
+
+	/*
+	 * Drop the freesp meta blocks that are in use by btrees.
+	 * The remaining blocks /should/ be AGFL blocks.
+	 */
+	error = xfs_repair_subtract_extents(sc, &ra.freesp_list,
+			&ra.agmeta_list);
+	if (error)
+		goto err;
+	xfs_repair_cancel_btree_extents(sc, &ra.agmeta_list);
+
+	/* Start rewriting the header. */
+	agfl = XFS_BUF_TO_AGFL(agfl_bp);
+	memset(agfl, 0xFF, mp->m_sb.sb_sectsize);
+	agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC);
+	agfl->agfl_seqno = cpu_to_be32(sc->sa.agno);
+	uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_meta_uuid);
+
+	/* Fill the AGFL with the remaining blocks. */
+	flcount = 0;
+	agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, agfl_bp);
+	for_each_xfs_repair_extent_safe(rae, n, &ra.freesp_list) {
+		agbno = XFS_FSB_TO_AGBNO(mp, rae->fsbno);
+
+		trace_xfs_repair_agfl_insert(mp, sc->sa.agno, agbno, rae->len);
+
+		for (bno = 0; bno < rae->len; bno++) {
+			if (flcount >= xfs_agfl_size(mp) - 1)
+				break;
+			agfl_bno[flcount + 1] = cpu_to_be32(agbno + bno);
+			flcount++;
+		}
+		rae->fsbno += bno;
+		rae->len -= bno;
+		if (rae->len)
+			break;
+		list_del(&rae->list);
+		kmem_free(rae);
+	}
+
+	/* Update the AGF counters. */
+	agf = XFS_BUF_TO_AGF(agf_bp);
+	old_flcount = be32_to_cpu(agf->agf_flcount);
+	agf->agf_flfirst = cpu_to_be32(1);
+	agf->agf_flcount = cpu_to_be32(flcount);
+	agf->agf_fllast = cpu_to_be32(flcount);
+
+	/* Trigger reinitialization of the in-core data. */
+	if (flcount != old_flcount) {
+		pag = xfs_perag_get(mp, sc->sa.agno);
+		if (pag->pagf_init)
+			pag->pagf_flcount = flcount;
+		xfs_perag_put(pag);
+		sc->reset_counters = true;
+	}
+
+	/* Write AGF and AGFL to disk. */
+	xfs_alloc_log_agf(sc->tp, agf_bp,
+			XFS_AGF_FLFIRST | XFS_AGF_FLLAST | XFS_AGF_FLCOUNT);
+	xfs_trans_buf_set_type(sc->tp, agfl_bp, XFS_BLFT_AGFL_BUF);
+	xfs_trans_log_buf(sc->tp, agfl_bp, 0, mp->m_sb.sb_sectsize - 1);
+
+	/* Dump any AGFL overflow. */
+	xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_AG);
+	return xfs_repair_reap_btree_extents(sc, &ra.freesp_list, &oinfo,
+			XFS_AG_RESV_AGFL);
+err:
+	xfs_repair_cancel_btree_extents(sc, &ra.agmeta_list);
+	xfs_repair_cancel_btree_extents(sc, &ra.freesp_list);
+	if (cur)
+		xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR :
+				XFS_BTREE_NOERROR);
+	return error;
+}
diff --git a/fs/xfs/scrub/repair.h b/fs/xfs/scrub/repair.h
index b474e9a..ad6f9c5 100644
--- a/fs/xfs/scrub/repair.h
+++ b/fs/xfs/scrub/repair.h
@@ -88,6 +88,8 @@ int xfs_repair_setup_btree_extent_collection(struct xfs_scrub_context *sc);
 
 /* Metadata repairers */
 int xfs_repair_superblock(struct xfs_scrub_context *sc);
+int xfs_repair_agf(struct xfs_scrub_context *sc);
+int xfs_repair_agfl(struct xfs_scrub_context *sc);
 
 #else
 
@@ -108,6 +110,8 @@ xfs_repair_calc_ag_resblks(
 }
 
 #define xfs_repair_superblock		(NULL)
+#define xfs_repair_agf			(NULL)
+#define xfs_repair_agfl			(NULL)
 
 #endif /* CONFIG_XFS_ONLINE_REPAIR */
 
diff --git a/fs/xfs/scrub/scrub.c b/fs/xfs/scrub/scrub.c
index 8695ef9..08a132e 100644
--- a/fs/xfs/scrub/scrub.c
+++ b/fs/xfs/scrub/scrub.c
@@ -220,11 +220,13 @@ static const struct xfs_scrub_meta_ops meta_scrub_ops[] = {
 		.type	= ST_PERAG,
 		.setup	= xfs_scrub_setup_fs,
 		.scrub	= xfs_scrub_agf,
+		.repair	= xfs_repair_agf,
 	},
 	[XFS_SCRUB_TYPE_AGFL]= {	/* agfl */
 		.type	= ST_PERAG,
 		.setup	= xfs_scrub_setup_fs,
 		.scrub	= xfs_scrub_agfl,
+		.repair	= xfs_repair_agfl,
 	},
 	[XFS_SCRUB_TYPE_AGI] = {	/* agi */
 		.type	= ST_PERAG,

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