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xfs: add a perag to the btree cursor

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Which will eventually completely replace the agno in it.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Dave Chinner
2021-06-02 10:48:24 +10:00
committed by Dave Chinner
parent 58d43a7e32
commit be9fb17d88
21 changed files with 119 additions and 70 deletions
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17
fs/xfs/libxfs/xfs_rmap_btree.c
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@@ -52,7 +52,7 @@ xfs_rmapbt_dup_cursor(
struct xfs_btree_cur *cur)
{
return xfs_rmapbt_init_cursor(cur->bc_mp, cur->bc_tp,
cur->bc_ag.agbp, cur->bc_ag.agno);
cur->bc_ag.agbp, cur->bc_ag.agno, cur->bc_ag.pag);
}
STATIC void
@@ -449,7 +449,8 @@ static struct xfs_btree_cur *
xfs_rmapbt_init_common(
struct xfs_mount *mp,
struct xfs_trans *tp,
xfs_agnumber_t agno)
xfs_agnumber_t agno,
struct xfs_perag *pag)
{
struct xfs_btree_cur *cur;
@@ -463,6 +464,11 @@ xfs_rmapbt_init_common(
cur->bc_statoff = XFS_STATS_CALC_INDEX(xs_rmap_2);
cur->bc_ag.agno = agno;
cur->bc_ops = &xfs_rmapbt_ops;
if (pag) {
/* take a reference for the cursor */
atomic_inc(&pag->pag_ref);
}
cur->bc_ag.pag = pag;
return cur;
}
@@ -473,12 +479,13 @@ xfs_rmapbt_init_cursor(
struct xfs_mount *mp,
struct xfs_trans *tp,
struct xfs_buf *agbp,
xfs_agnumber_t agno)
xfs_agnumber_t agno,
struct xfs_perag *pag)
{
struct xfs_agf *agf = agbp->b_addr;
struct xfs_btree_cur *cur;
cur = xfs_rmapbt_init_common(mp, tp, agno);
cur = xfs_rmapbt_init_common(mp, tp, agno, pag);
cur->bc_nlevels = be32_to_cpu(agf->agf_levels[XFS_BTNUM_RMAP]);
cur->bc_ag.agbp = agbp;
return cur;
@@ -493,7 +500,7 @@ xfs_rmapbt_stage_cursor(
{
struct xfs_btree_cur *cur;
cur = xfs_rmapbt_init_common(mp, NULL, agno);
cur = xfs_rmapbt_init_common(mp, NULL, agno, NULL);
xfs_btree_stage_afakeroot(cur, afake);
return cur;
}