xfs: plumb in needed functions for range querying of various btrees
Plumb in the pieces (init_high_key, diff_two_keys) necessary to call
query_range on the inode space and block mapping btrees and to extract
raw btree records. This will eventually be used by the inobt and bmbt
scrubbers.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
diff --git a/fs/xfs/libxfs/xfs_bmap_btree.c b/fs/xfs/libxfs/xfs_bmap_btree.c
index e23495e..85de225 100644
--- a/fs/xfs/libxfs/xfs_bmap_btree.c
+++ b/fs/xfs/libxfs/xfs_bmap_btree.c
@@ -573,6 +573,16 @@ xfs_bmbt_init_key_from_rec(
}
STATIC void
+xfs_bmbt_init_high_key_from_rec(
+ union xfs_btree_key *key,
+ union xfs_btree_rec *rec)
+{
+ key->bmbt.br_startoff = cpu_to_be64(
+ xfs_bmbt_disk_get_startoff(&rec->bmbt) +
+ xfs_bmbt_disk_get_blockcount(&rec->bmbt) - 1);
+}
+
+STATIC void
xfs_bmbt_init_rec_from_cur(
struct xfs_btree_cur *cur,
union xfs_btree_rec *rec)
@@ -597,6 +607,16 @@ xfs_bmbt_key_diff(
cur->bc_rec.b.br_startoff;
}
+STATIC int64_t
+xfs_bmbt_diff_two_keys(
+ struct xfs_btree_cur *cur,
+ union xfs_btree_key *k1,
+ union xfs_btree_key *k2)
+{
+ return (int64_t)be64_to_cpu(k1->bmbt.br_startoff) -
+ be64_to_cpu(k2->bmbt.br_startoff);
+}
+
static bool
xfs_bmbt_verify(
struct xfs_buf *bp)
@@ -720,9 +740,11 @@ static const struct xfs_btree_ops xfs_bmbt_ops = {
.get_minrecs = xfs_bmbt_get_minrecs,
.get_dmaxrecs = xfs_bmbt_get_dmaxrecs,
.init_key_from_rec = xfs_bmbt_init_key_from_rec,
+ .init_high_key_from_rec = xfs_bmbt_init_high_key_from_rec,
.init_rec_from_cur = xfs_bmbt_init_rec_from_cur,
.init_ptr_from_cur = xfs_bmbt_init_ptr_from_cur,
.key_diff = xfs_bmbt_key_diff,
+ .diff_two_keys = xfs_bmbt_diff_two_keys,
.buf_ops = &xfs_bmbt_buf_ops,
.keys_inorder = xfs_bmbt_keys_inorder,
.recs_inorder = xfs_bmbt_recs_inorder,