xfs: add a perag to the btree cursor
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>
diff --git a/fs/xfs/libxfs/xfs_refcount_btree.c b/fs/xfs/libxfs/xfs_refcount_btree.c
index c4ddf9d..74f8ac0 100644
--- a/fs/xfs/libxfs/xfs_refcount_btree.c
+++ b/fs/xfs/libxfs/xfs_refcount_btree.c
@@ -26,7 +26,7 @@ xfs_refcountbt_dup_cursor(
struct xfs_btree_cur *cur)
{
return xfs_refcountbt_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
@@ -316,7 +316,8 @@ static struct xfs_btree_cur *
xfs_refcountbt_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;
@@ -332,6 +333,11 @@ xfs_refcountbt_init_common(
cur->bc_ag.agno = agno;
cur->bc_flags |= XFS_BTREE_CRC_BLOCKS;
+ if (pag) {
+ /* take a reference for the cursor */
+ atomic_inc(&pag->pag_ref);
+ }
+ cur->bc_ag.pag = pag;
cur->bc_ag.refc.nr_ops = 0;
cur->bc_ag.refc.shape_changes = 0;
@@ -345,12 +351,13 @@ xfs_refcountbt_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_refcountbt_init_common(mp, tp, agno);
+ cur = xfs_refcountbt_init_common(mp, tp, agno, pag);
cur->bc_nlevels = be32_to_cpu(agf->agf_refcount_level);
cur->bc_ag.agbp = agbp;
return cur;
@@ -365,7 +372,7 @@ xfs_refcountbt_stage_cursor(
{
struct xfs_btree_cur *cur;
- cur = xfs_refcountbt_init_common(mp, NULL, agno);
+ cur = xfs_refcountbt_init_common(mp, NULL, agno, NULL);
xfs_btree_stage_afakeroot(cur, afake);
return cur;
}
