xfs: Pre-calculate per-AG agbno geometry

There is a lot of overhead in functions like xfs_verify_agbno() that
repeatedly calculate the geometry limits of an AG. These can be
pre-calculated as they are static and the verification context has
a per-ag context it can quickly reference.

In the case of xfs_verify_agbno(), we now always have a perag
context handy, so we can store the AG length and the minimum valid
block in the AG in the perag. This means we don't have to calculate
it on every call and it can be inlined in callers if we move it
to xfs_ag.h.

Move xfs_ag_block_count() to xfs_ag.c because it's really a
per-ag function and not an XFS type function. We need a little
bit of rework that is specific to xfs_initialise_perag() to allow
growfs to calculate the new perag sizes before we've updated the
primary superblock during the grow (chicken/egg situation).

Note that we leave the original xfs_verify_agbno in place in
xfs_types.c as a static function as other callers in that file do
not have per-ag contexts so still need to go the long way. It's been
renamed to xfs_verify_agno_agbno() to indicate it takes both an agno
and an agbno to differentiate it from new function.

Future commits will make similar changes for other per-ag geometry
validation functions.

Further:

$ size --totals fs/xfs/built-in.a
	   text    data     bss     dec     hex filename
before	1483006	 329588	    572	1813166	 1baaae	(TOTALS)
after	1482185	 329588	    572	1812345	 1ba779	(TOTALS)

This rework reduces the binary size by ~820 bytes, indicating
that much less work is being done to bounds check the agbno values
against on per-ag geometry information.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>

diff --git a/fs/xfs/libxfs/xfs_ag.c b/fs/xfs/libxfs/xfs_ag.c
index 1fa1725..8f3e6ee 100644 (file)
--- a/fs/xfs/libxfs/xfs_ag.c
+++ b/fs/xfs/libxfs/xfs_ag.c
@@ -201,10 +201,35 @@ xfs_free_perag(
        }
 }
 
+/* Find the size of the AG, in blocks. */
+static xfs_agblock_t
+__xfs_ag_block_count(
+       struct xfs_mount        *mp,
+       xfs_agnumber_t          agno,
+       xfs_agnumber_t          agcount,
+       xfs_rfsblock_t          dblocks)
+{
+       ASSERT(agno < agcount);
+
+       if (agno < agcount - 1)
+               return mp->m_sb.sb_agblocks;
+       return dblocks - (agno * mp->m_sb.sb_agblocks);
+}
+
+xfs_agblock_t
+xfs_ag_block_count(
+       struct xfs_mount        *mp,
+       xfs_agnumber_t          agno)
+{
+       return __xfs_ag_block_count(mp, agno, mp->m_sb.sb_agcount,
+                       mp->m_sb.sb_dblocks);
+}
+
 int
 xfs_initialize_perag(
        struct xfs_mount        *mp,
        xfs_agnumber_t          agcount,
+       xfs_rfsblock_t          dblocks,
        xfs_agnumber_t          *maxagi)
 {
        struct xfs_perag        *pag;
@@ -270,6 +295,13 @@ xfs_initialize_perag(
                /* first new pag is fully initialized */
                if (first_initialised == NULLAGNUMBER)
                        first_initialised = index;
+
+               /*
+                * Pre-calculated geometry
+                */
+               pag->block_count = __xfs_ag_block_count(mp, index, agcount,
+                               dblocks);
+               pag->min_block = XFS_AGFL_BLOCK(mp);
        }
 
        index = xfs_set_inode_alloc(mp, agcount);
@@ -927,10 +959,16 @@ xfs_ag_extend_space(
        if (error)
                return error;
 
-       return  xfs_free_extent(tp, XFS_AGB_TO_FSB(pag->pag_mount, pag->pag_agno,
+       error = xfs_free_extent(tp, XFS_AGB_TO_FSB(pag->pag_mount, pag->pag_agno,
                                        be32_to_cpu(agf->agf_length) - len),
                                len, &XFS_RMAP_OINFO_SKIP_UPDATE,
                                XFS_AG_RESV_NONE);
+       if (error)
+               return error;
+
+       /* Update perag geometry */
+       pag->block_count = be32_to_cpu(agf->agf_length);
+       return 0;
 }
 
 /* Retrieve AG geometry. */

diff --git a/fs/xfs/libxfs/xfs_ag.h b/fs/xfs/libxfs/xfs_ag.h
index 1132cda..77640f1 100644 (file)
--- a/fs/xfs/libxfs/xfs_ag.h
+++ b/fs/xfs/libxfs/xfs_ag.h
@@ -67,6 +67,10 @@ struct xfs_perag {
        /* for rcu-safe freeing */
        struct rcu_head rcu_head;
 
+       /* Precalculated geometry info */
+       xfs_agblock_t           block_count;
+       xfs_agblock_t           min_block;
+
 #ifdef __KERNEL__
        /* -- kernel only structures below this line -- */
 
@@ -107,7 +111,7 @@ struct xfs_perag {
 };
 
 int xfs_initialize_perag(struct xfs_mount *mp, xfs_agnumber_t agcount,
-                       xfs_agnumber_t *maxagi);
+                       xfs_rfsblock_t dcount, xfs_agnumber_t *maxagi);
 int xfs_initialize_perag_data(struct xfs_mount *mp, xfs_agnumber_t agno);
 void xfs_free_perag(struct xfs_mount *mp);
 
@@ -117,6 +121,21 @@ struct xfs_perag *xfs_perag_get_tag(struct xfs_mount *mp, xfs_agnumber_t agno,
 void xfs_perag_put(struct xfs_perag *pag);
 
 /*
+ * Per-ag geometry infomation and validation
+ */
+xfs_agblock_t xfs_ag_block_count(struct xfs_mount *mp, xfs_agnumber_t agno);
+
+static inline bool
+xfs_verify_agbno(struct xfs_perag *pag, xfs_agblock_t agbno)
+{
+       if (agbno >= pag->block_count)
+               return false;
+       if (agbno <= pag->min_block)
+               return false;
+       return true;
+}
+
+/*
  * Perag iteration APIs
  */
 static inline struct xfs_perag *

diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
index ea94529..41557c4 100644 (file)
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c
@@ -248,7 +248,7 @@ xfs_alloc_get_rec(
        int                     *stat)  /* output: success/failure */
 {
        struct xfs_mount        *mp = cur->bc_mp;
-       xfs_agnumber_t          agno = cur->bc_ag.pag->pag_agno;
+       struct xfs_perag        *pag = cur->bc_ag.pag;
        union xfs_btree_rec     *rec;
        int                     error;
 
@@ -263,11 +263,11 @@ xfs_alloc_get_rec(
                goto out_bad_rec;
 
        /* check for valid extent range, including overflow */
-       if (!xfs_verify_agbno(mp, agno, *bno))
+       if (!xfs_verify_agbno(pag, *bno))
                goto out_bad_rec;
        if (*bno > *bno + *len)
                goto out_bad_rec;
-       if (!xfs_verify_agbno(mp, agno, *bno + *len - 1))
+       if (!xfs_verify_agbno(pag, *bno + *len - 1))
                goto out_bad_rec;
 
        return 0;
@@ -275,7 +275,8 @@ xfs_alloc_get_rec(
 out_bad_rec:
        xfs_warn(mp,
                "%s Freespace BTree record corruption in AG %d detected!",
-               cur->bc_btnum == XFS_BTNUM_BNO ? "Block" : "Size", agno);
+               cur->bc_btnum == XFS_BTNUM_BNO ? "Block" : "Size",
+               pag->pag_agno);
        xfs_warn(mp,
                "start block 0x%x block count 0x%x", *bno, *len);
        return -EFSCORRUPTED;

diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c
index 2eecc49..06ab364 100644 (file)
--- a/fs/xfs/libxfs/xfs_btree.c
+++ b/fs/xfs/libxfs/xfs_btree.c
@@ -91,10 +91,9 @@ xfs_btree_check_lblock_siblings(
 
 static inline xfs_failaddr_t
 xfs_btree_check_sblock_siblings(
-       struct xfs_mount        *mp,
+       struct xfs_perag        *pag,
        struct xfs_btree_cur    *cur,
        int                     level,
-       xfs_agnumber_t          agno,
        xfs_agblock_t           agbno,
        __be32                  dsibling)
 {
@@ -110,7 +109,7 @@ xfs_btree_check_sblock_siblings(
                if (!xfs_btree_check_sptr(cur, sibling, level + 1))
                        return __this_address;
        } else {
-               if (!xfs_verify_agbno(mp, agno, sibling))
+               if (!xfs_verify_agbno(pag, sibling))
                        return __this_address;
        }
        return NULL;
@@ -195,11 +194,11 @@ __xfs_btree_check_sblock(
        struct xfs_buf          *bp)
 {
        struct xfs_mount        *mp = cur->bc_mp;
+       struct xfs_perag        *pag = cur->bc_ag.pag;
        xfs_btnum_t             btnum = cur->bc_btnum;
        int                     crc = xfs_has_crc(mp);
        xfs_failaddr_t          fa;
        xfs_agblock_t           agbno = NULLAGBLOCK;
-       xfs_agnumber_t          agno = NULLAGNUMBER;
 
        if (crc) {
                if (!uuid_equal(&block->bb_u.s.bb_uuid, &mp->m_sb.sb_meta_uuid))
@@ -217,16 +216,14 @@ __xfs_btree_check_sblock(
            cur->bc_ops->get_maxrecs(cur, level))
                return __this_address;
 
-       if (bp) {
+       if (bp)
                agbno = xfs_daddr_to_agbno(mp, xfs_buf_daddr(bp));
-               agno = xfs_daddr_to_agno(mp, xfs_buf_daddr(bp));
-       }
 
-       fa = xfs_btree_check_sblock_siblings(mp, cur, level, agno, agbno,
+       fa = xfs_btree_check_sblock_siblings(pag, cur, level, agbno,
                        block->bb_u.s.bb_leftsib);
        if (!fa)
-               fa = xfs_btree_check_sblock_siblings(mp, cur, level, agno,
-                                agbno, block->bb_u.s.bb_rightsib);
+               fa = xfs_btree_check_sblock_siblings(pag, cur, level, agbno,
+                               block->bb_u.s.bb_rightsib);
        return fa;
 }
 
@@ -288,7 +285,7 @@ xfs_btree_check_sptr(
 {
        if (level <= 0)
                return false;
-       return xfs_verify_agbno(cur->bc_mp, cur->bc_ag.pag->pag_agno, agbno);
+       return xfs_verify_agbno(cur->bc_ag.pag, agbno);
 }
 
 /*
@@ -4595,7 +4592,6 @@ xfs_btree_sblock_verify(
 {
        struct xfs_mount        *mp = bp->b_mount;
        struct xfs_btree_block  *block = XFS_BUF_TO_BLOCK(bp);
-       xfs_agnumber_t          agno;
        xfs_agblock_t           agbno;
        xfs_failaddr_t          fa;
 
@@ -4604,12 +4600,11 @@ xfs_btree_sblock_verify(
                return __this_address;
 
        /* sibling pointer verification */
-       agno = xfs_daddr_to_agno(mp, xfs_buf_daddr(bp));
        agbno = xfs_daddr_to_agbno(mp, xfs_buf_daddr(bp));
-       fa = xfs_btree_check_sblock_siblings(mp, NULL, -1, agno, agbno,
+       fa = xfs_btree_check_sblock_siblings(bp->b_pag, NULL, -1, agbno,
                        block->bb_u.s.bb_leftsib);
        if (!fa)
-               fa = xfs_btree_check_sblock_siblings(mp, NULL, -1, agno, agbno,
+               fa = xfs_btree_check_sblock_siblings(bp->b_pag, NULL, -1, agbno,
                                block->bb_u.s.bb_rightsib);
        return fa;
 }

diff --git a/fs/xfs/libxfs/xfs_refcount.c b/fs/xfs/libxfs/xfs_refcount.c
index 098dac8..64b910c 100644 (file)
--- a/fs/xfs/libxfs/xfs_refcount.c
+++ b/fs/xfs/libxfs/xfs_refcount.c
@@ -111,7 +111,7 @@ xfs_refcount_get_rec(
        int                             *stat)
 {
        struct xfs_mount                *mp = cur->bc_mp;
-       xfs_agnumber_t                  agno = cur->bc_ag.pag->pag_agno;
+       struct xfs_perag                *pag = cur->bc_ag.pag;
        union xfs_btree_rec             *rec;
        int                             error;
        xfs_agblock_t                   realstart;
@@ -121,8 +121,6 @@ xfs_refcount_get_rec(
                return error;
 
        xfs_refcount_btrec_to_irec(rec, irec);
-
-       agno = cur->bc_ag.pag->pag_agno;
        if (irec->rc_blockcount == 0 || irec->rc_blockcount > MAXREFCEXTLEN)
                goto out_bad_rec;
 
@@ -137,22 +135,23 @@ xfs_refcount_get_rec(
        }
 
        /* check for valid extent range, including overflow */
-       if (!xfs_verify_agbno(mp, agno, realstart))
+       if (!xfs_verify_agbno(pag, realstart))
                goto out_bad_rec;
        if (realstart > realstart + irec->rc_blockcount)
                goto out_bad_rec;
-       if (!xfs_verify_agbno(mp, agno, realstart + irec->rc_blockcount - 1))
+       if (!xfs_verify_agbno(pag, realstart + irec->rc_blockcount - 1))
                goto out_bad_rec;
 
        if (irec->rc_refcount == 0 || irec->rc_refcount > MAXREFCOUNT)
                goto out_bad_rec;
 
-       trace_xfs_refcount_get(cur->bc_mp, cur->bc_ag.pag->pag_agno, irec);
+       trace_xfs_refcount_get(cur->bc_mp, pag->pag_agno, irec);
        return 0;
 
 out_bad_rec:
        xfs_warn(mp,
-               "Refcount BTree record corruption in AG %d detected!", agno);
+               "Refcount BTree record corruption in AG %d detected!",
+               pag->pag_agno);
        xfs_warn(mp,
                "Start block 0x%x, block count 0x%x, references 0x%x",
                irec->rc_startblock, irec->rc_blockcount, irec->rc_refcount);

diff --git a/fs/xfs/libxfs/xfs_rmap.c b/fs/xfs/libxfs/xfs_rmap.c
index 2845019..094dfc8 100644 (file)
--- a/fs/xfs/libxfs/xfs_rmap.c
+++ b/fs/xfs/libxfs/xfs_rmap.c
@@ -215,7 +215,7 @@ xfs_rmap_get_rec(
        int                     *stat)
 {
        struct xfs_mount        *mp = cur->bc_mp;
-       xfs_agnumber_t          agno = cur->bc_ag.pag->pag_agno;
+       struct xfs_perag        *pag = cur->bc_ag.pag;
        union xfs_btree_rec     *rec;
        int                     error;
 
@@ -235,12 +235,12 @@ xfs_rmap_get_rec(
                        goto out_bad_rec;
        } else {
                /* check for valid extent range, including overflow */
-               if (!xfs_verify_agbno(mp, agno, irec->rm_startblock))
+               if (!xfs_verify_agbno(pag, irec->rm_startblock))
                        goto out_bad_rec;
                if (irec->rm_startblock >
                                irec->rm_startblock + irec->rm_blockcount)
                        goto out_bad_rec;
-               if (!xfs_verify_agbno(mp, agno,
+               if (!xfs_verify_agbno(pag,
                                irec->rm_startblock + irec->rm_blockcount - 1))
                        goto out_bad_rec;
        }
@@ -254,7 +254,7 @@ xfs_rmap_get_rec(
 out_bad_rec:
        xfs_warn(mp,
                "Reverse Mapping BTree record corruption in AG %d detected!",
-               agno);
+               pag->pag_agno);
        xfs_warn(mp,
                "Owner 0x%llx, flags 0x%x, start block 0x%x block count 0x%x",
                irec->rm_owner, irec->rm_flags, irec->rm_startblock,

diff --git a/fs/xfs/libxfs/xfs_types.c b/fs/xfs/libxfs/xfs_types.c
index e810d23..b3c6b02 100644 (file)
--- a/fs/xfs/libxfs/xfs_types.c
+++ b/fs/xfs/libxfs/xfs_types.c
@@ -13,25 +13,13 @@
 #include "xfs_mount.h"
 #include "xfs_ag.h"
 
-/* Find the size of the AG, in blocks. */
-inline xfs_agblock_t
-xfs_ag_block_count(
-       struct xfs_mount        *mp,
-       xfs_agnumber_t          agno)
-{
-       ASSERT(agno < mp->m_sb.sb_agcount);
-
-       if (agno < mp->m_sb.sb_agcount - 1)
-               return mp->m_sb.sb_agblocks;
-       return mp->m_sb.sb_dblocks - (agno * mp->m_sb.sb_agblocks);
-}
 
 /*
  * Verify that an AG block number pointer neither points outside the AG
  * nor points at static metadata.
  */
-inline bool
-xfs_verify_agbno(
+static inline bool
+xfs_verify_agno_agbno(
        struct xfs_mount        *mp,
        xfs_agnumber_t          agno,
        xfs_agblock_t           agbno)
@@ -59,7 +47,7 @@ xfs_verify_fsbno(
 
        if (agno >= mp->m_sb.sb_agcount)
                return false;
-       return xfs_verify_agbno(mp, agno, XFS_FSB_TO_AGBNO(mp, fsbno));
+       return xfs_verify_agno_agbno(mp, agno, XFS_FSB_TO_AGBNO(mp, fsbno));
 }
 
 /*

diff --git a/fs/xfs/libxfs/xfs_types.h b/fs/xfs/libxfs/xfs_types.h
index 373f64a..ccf61af 100644 (file)
--- a/fs/xfs/libxfs/xfs_types.h
+++ b/fs/xfs/libxfs/xfs_types.h
@@ -179,9 +179,6 @@ enum xfs_ag_resv_type {
  */
 struct xfs_mount;
 
-xfs_agblock_t xfs_ag_block_count(struct xfs_mount *mp, xfs_agnumber_t agno);
-bool xfs_verify_agbno(struct xfs_mount *mp, xfs_agnumber_t agno,
-               xfs_agblock_t agbno);
 bool xfs_verify_fsbno(struct xfs_mount *mp, xfs_fsblock_t fsbno);
 bool xfs_verify_fsbext(struct xfs_mount *mp, xfs_fsblock_t fsbno,
                xfs_fsblock_t len);

diff --git a/fs/xfs/scrub/agheader.c b/fs/xfs/scrub/agheader.c
index 90aebfe..181bba5 100644 (file)
--- a/fs/xfs/scrub/agheader.c
+++ b/fs/xfs/scrub/agheader.c
@@ -541,16 +541,16 @@ xchk_agf(
 
        /* Check the AG length */
        eoag = be32_to_cpu(agf->agf_length);
-       if (eoag != xfs_ag_block_count(mp, agno))
+       if (eoag != pag->block_count)
                xchk_block_set_corrupt(sc, sc->sa.agf_bp);
 
        /* Check the AGF btree roots and levels */
        agbno = be32_to_cpu(agf->agf_roots[XFS_BTNUM_BNO]);
-       if (!xfs_verify_agbno(mp, agno, agbno))
+       if (!xfs_verify_agbno(pag, agbno))
                xchk_block_set_corrupt(sc, sc->sa.agf_bp);
 
        agbno = be32_to_cpu(agf->agf_roots[XFS_BTNUM_CNT]);
-       if (!xfs_verify_agbno(mp, agno, agbno))
+       if (!xfs_verify_agbno(pag, agbno))
                xchk_block_set_corrupt(sc, sc->sa.agf_bp);
 
        level = be32_to_cpu(agf->agf_levels[XFS_BTNUM_BNO]);
@@ -563,7 +563,7 @@ xchk_agf(
 
        if (xfs_has_rmapbt(mp)) {
                agbno = be32_to_cpu(agf->agf_roots[XFS_BTNUM_RMAP]);
-               if (!xfs_verify_agbno(mp, agno, agbno))
+               if (!xfs_verify_agbno(pag, agbno))
                        xchk_block_set_corrupt(sc, sc->sa.agf_bp);
 
                level = be32_to_cpu(agf->agf_levels[XFS_BTNUM_RMAP]);
@@ -573,7 +573,7 @@ xchk_agf(
 
        if (xfs_has_reflink(mp)) {
                agbno = be32_to_cpu(agf->agf_refcount_root);
-               if (!xfs_verify_agbno(mp, agno, agbno))
+               if (!xfs_verify_agbno(pag, agbno))
                        xchk_block_set_corrupt(sc, sc->sa.agf_bp);
 
                level = be32_to_cpu(agf->agf_refcount_level);
@@ -639,9 +639,8 @@ xchk_agfl_block(
 {
        struct xchk_agfl_info   *sai = priv;
        struct xfs_scrub        *sc = sai->sc;
-       xfs_agnumber_t          agno = sc->sa.pag->pag_agno;
 
-       if (xfs_verify_agbno(mp, agno, agbno) &&
+       if (xfs_verify_agbno(sc->sa.pag, agbno) &&
            sai->nr_entries < sai->sz_entries)
                sai->entries[sai->nr_entries++] = agbno;
        else
@@ -871,12 +870,12 @@ xchk_agi(
 
        /* Check the AG length */
        eoag = be32_to_cpu(agi->agi_length);
-       if (eoag != xfs_ag_block_count(mp, agno))
+       if (eoag != pag->block_count)
                xchk_block_set_corrupt(sc, sc->sa.agi_bp);
 
        /* Check btree roots and levels */
        agbno = be32_to_cpu(agi->agi_root);
-       if (!xfs_verify_agbno(mp, agno, agbno))
+       if (!xfs_verify_agbno(pag, agbno))
                xchk_block_set_corrupt(sc, sc->sa.agi_bp);
 
        level = be32_to_cpu(agi->agi_level);
@@ -885,7 +884,7 @@ xchk_agi(
 
        if (xfs_has_finobt(mp)) {
                agbno = be32_to_cpu(agi->agi_free_root);
-               if (!xfs_verify_agbno(mp, agno, agbno))
+               if (!xfs_verify_agbno(pag, agbno))
                        xchk_block_set_corrupt(sc, sc->sa.agi_bp);
 
                level = be32_to_cpu(agi->agi_free_level);

diff --git a/fs/xfs/scrub/agheader_repair.c b/fs/xfs/scrub/agheader_repair.c
index 10ac111..ba012a5 100644 (file)
--- a/fs/xfs/scrub/agheader_repair.c
+++ b/fs/xfs/scrub/agheader_repair.c
@@ -106,7 +106,7 @@ xrep_agf_check_agfl_block(
 {
        struct xfs_scrub        *sc = priv;
 
-       if (!xfs_verify_agbno(mp, sc->sa.pag->pag_agno, agbno))
+       if (!xfs_verify_agbno(sc->sa.pag, agbno))
                return -EFSCORRUPTED;
        return 0;
 }
@@ -130,10 +130,7 @@ xrep_check_btree_root(
        struct xfs_scrub                *sc,
        struct xrep_find_ag_btree       *fab)
 {
-       struct xfs_mount                *mp = sc->mp;
-       xfs_agnumber_t                  agno = sc->sm->sm_agno;
-
-       return xfs_verify_agbno(mp, agno, fab->root) &&
+       return xfs_verify_agbno(sc->sa.pag, fab->root) &&
               fab->height <= fab->maxlevels;
 }
 

diff --git a/fs/xfs/scrub/alloc.c b/fs/xfs/scrub/alloc.c
index 87518e1..ab427b4 100644 (file)
--- a/fs/xfs/scrub/alloc.c
+++ b/fs/xfs/scrub/alloc.c
@@ -93,8 +93,7 @@ xchk_allocbt_rec(
        struct xchk_btree       *bs,
        const union xfs_btree_rec *rec)
 {
-       struct xfs_mount        *mp = bs->cur->bc_mp;
-       xfs_agnumber_t          agno = bs->cur->bc_ag.pag->pag_agno;
+       struct xfs_perag        *pag = bs->cur->bc_ag.pag;
        xfs_agblock_t           bno;
        xfs_extlen_t            len;
 
@@ -102,8 +101,8 @@ xchk_allocbt_rec(
        len = be32_to_cpu(rec->alloc.ar_blockcount);
 
        if (bno + len <= bno ||
-           !xfs_verify_agbno(mp, agno, bno) ||
-           !xfs_verify_agbno(mp, agno, bno + len - 1))
+           !xfs_verify_agbno(pag, bno) ||
+           !xfs_verify_agbno(pag, bno + len - 1))
                xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
 
        xchk_allocbt_xref(bs->sc, bno, len);

diff --git a/fs/xfs/scrub/ialloc.c b/fs/xfs/scrub/ialloc.c
index 00848ee..b80a54b 100644 (file)
--- a/fs/xfs/scrub/ialloc.c
+++ b/fs/xfs/scrub/ialloc.c
@@ -104,13 +104,13 @@ xchk_iallocbt_chunk(
        xfs_extlen_t                    len)
 {
        struct xfs_mount                *mp = bs->cur->bc_mp;
-       xfs_agnumber_t                  agno = bs->cur->bc_ag.pag->pag_agno;
+       struct xfs_perag                *pag = bs->cur->bc_ag.pag;
        xfs_agblock_t                   bno;
 
        bno = XFS_AGINO_TO_AGBNO(mp, agino);
        if (bno + len <= bno ||
-           !xfs_verify_agbno(mp, agno, bno) ||
-           !xfs_verify_agbno(mp, agno, bno + len - 1))
+           !xfs_verify_agbno(pag, bno) ||
+           !xfs_verify_agbno(pag, bno + len - 1))
                xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
 
        xchk_iallocbt_chunk_xref(bs->sc, irec, agino, bno, len);

diff --git a/fs/xfs/scrub/refcount.c b/fs/xfs/scrub/refcount.c
index 2744eec..3f82a1a 100644 (file)
--- a/fs/xfs/scrub/refcount.c
+++ b/fs/xfs/scrub/refcount.c
@@ -332,9 +332,8 @@ xchk_refcountbt_rec(
        struct xchk_btree       *bs,
        const union xfs_btree_rec *rec)
 {
-       struct xfs_mount        *mp = bs->cur->bc_mp;
        xfs_agblock_t           *cow_blocks = bs->private;
-       xfs_agnumber_t          agno = bs->cur->bc_ag.pag->pag_agno;
+       struct xfs_perag        *pag = bs->cur->bc_ag.pag;
        xfs_agblock_t           bno;
        xfs_extlen_t            len;
        xfs_nlink_t             refcount;
@@ -354,8 +353,8 @@ xchk_refcountbt_rec(
        /* Check the extent. */
        bno &= ~XFS_REFC_COW_START;
        if (bno + len <= bno ||
-           !xfs_verify_agbno(mp, agno, bno) ||
-           !xfs_verify_agbno(mp, agno, bno + len - 1))
+           !xfs_verify_agbno(pag, bno) ||
+           !xfs_verify_agbno(pag, bno + len - 1))
                xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
 
        if (refcount == 0)

diff --git a/fs/xfs/scrub/rmap.c b/fs/xfs/scrub/rmap.c
index 8dae034..229826b 100644 (file)
--- a/fs/xfs/scrub/rmap.c
+++ b/fs/xfs/scrub/rmap.c
@@ -92,7 +92,7 @@ xchk_rmapbt_rec(
 {
        struct xfs_mount        *mp = bs->cur->bc_mp;
        struct xfs_rmap_irec    irec;
-       xfs_agnumber_t          agno = bs->cur->bc_ag.pag->pag_agno;
+       struct xfs_perag        *pag = bs->cur->bc_ag.pag;
        bool                    non_inode;
        bool                    is_unwritten;
        bool                    is_bmbt;
@@ -121,8 +121,8 @@ xchk_rmapbt_rec(
                 * Otherwise we must point somewhere past the static metadata
                 * but before the end of the FS.  Run the regular check.
                 */
-               if (!xfs_verify_agbno(mp, agno, irec.rm_startblock) ||
-                   !xfs_verify_agbno(mp, agno, irec.rm_startblock +
+               if (!xfs_verify_agbno(pag, irec.rm_startblock) ||
+                   !xfs_verify_agbno(pag, irec.rm_startblock +
                                irec.rm_blockcount - 1))
                        xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
        }

diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 7be4d83..5fe9af2 100644 (file)
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -132,7 +132,7 @@ xfs_growfs_data_private(
        oagcount = mp->m_sb.sb_agcount;
        /* allocate the new per-ag structures */
        if (nagcount > oagcount) {
-               error = xfs_initialize_perag(mp, nagcount, &nagimax);
+               error = xfs_initialize_perag(mp, nagcount, nb, &nagimax);
                if (error)
                        return error;
        } else if (nagcount < oagcount) {

diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 38aae34..3e8c62c 100644 (file)
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -3313,7 +3313,8 @@ xlog_do_recover(
        /* re-initialise in-core superblock and geometry structures */
        mp->m_features |= xfs_sb_version_to_features(sbp);
        xfs_reinit_percpu_counters(mp);
-       error = xfs_initialize_perag(mp, sbp->sb_agcount, &mp->m_maxagi);
+       error = xfs_initialize_perag(mp, sbp->sb_agcount, sbp->sb_dblocks,
+                       &mp->m_maxagi);
        if (error) {
                xfs_warn(mp, "Failed post-recovery per-ag init: %d", error);
                return error;

diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index daa8d29..f10c88c 100644 (file)
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -778,7 +778,8 @@ xfs_mountfs(
        /*
         * Allocate and initialize the per-ag data.
         */
-       error = xfs_initialize_perag(mp, sbp->sb_agcount, &mp->m_maxagi);
+       error = xfs_initialize_perag(mp, sbp->sb_agcount, mp->m_sb.sb_dblocks,
+                       &mp->m_maxagi);
        if (error) {
                xfs_warn(mp, "Failed per-ag init: %d", error);
                goto out_free_dir;