[PATCH 1/2] xfs: export several rmap btree key/record ops

[Eric Sandeen <sandeen@redhat.com>]

The AG rmap btree and the realtime rmap btree have several identical
btree key and record ops.

Export the AG variants of these ops so that they can be shared with the
realtime code in the next patch, to eliminate this copied code.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
---
 fs/xfs/libxfs/xfs_rmap_btree.c | 16 ++++++++--------
 fs/xfs/libxfs/xfs_rmap_btree.h | 26 ++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 8 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_rmap_btree.c b/fs/xfs/libxfs/xfs_rmap_btree.c
index 10b3272238eb..5b283a5ddd13 100644
--- a/fs/xfs/libxfs/xfs_rmap_btree.c
+++ b/fs/xfs/libxfs/xfs_rmap_btree.c
@@ -170,7 +170,7 @@ static inline __be64 ondisk_rec_offset_to_key(const union xfs_btree_rec *rec)
 	return rec->rmap.rm_offset & ~cpu_to_be64(XFS_RMAP_OFF_UNWRITTEN);
 }
 
-STATIC void
+void
 xfs_rmapbt_init_key_from_rec(
 	union xfs_btree_key		*key,
 	const union xfs_btree_rec	*rec)
@@ -187,7 +187,7 @@ xfs_rmapbt_init_key_from_rec(
  * the startblock for all records, and if the record is for a data/attr
  * fork mapping, we add blockcount-1 to the offset too.
  */
-STATIC void
+void
 xfs_rmapbt_init_high_key_from_rec(
 	union xfs_btree_key		*key,
 	const union xfs_btree_rec	*rec)
@@ -209,7 +209,7 @@ xfs_rmapbt_init_high_key_from_rec(
 	key->rmap.rm_offset = cpu_to_be64(off);
 }
 
-STATIC void
+void
 xfs_rmapbt_init_rec_from_cur(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_rec	*rec)
@@ -243,7 +243,7 @@ static inline uint64_t offset_keymask(uint64_t offset)
 	return offset & ~XFS_RMAP_OFF_UNWRITTEN;
 }
 
-STATIC int
+int
 xfs_rmapbt_cmp_key_with_cur(
 	struct xfs_btree_cur		*cur,
 	const union xfs_btree_key	*key)
@@ -257,7 +257,7 @@ xfs_rmapbt_cmp_key_with_cur(
 		       offset_keymask(xfs_rmap_irec_offset_pack(rec)));
 }
 
-STATIC int
+int
 xfs_rmapbt_cmp_two_keys(
 	struct xfs_btree_cur		*cur,
 	const union xfs_btree_key	*k1,
@@ -390,7 +390,7 @@ const struct xfs_buf_ops xfs_rmapbt_buf_ops = {
 	.verify_struct		= xfs_rmapbt_verify,
 };
 
-STATIC int
+int
 xfs_rmapbt_keys_inorder(
 	struct xfs_btree_cur		*cur,
 	const union xfs_btree_key	*k1,
@@ -420,7 +420,7 @@ xfs_rmapbt_keys_inorder(
 	return 0;
 }
 
-STATIC int
+int
 xfs_rmapbt_recs_inorder(
 	struct xfs_btree_cur		*cur,
 	const union xfs_btree_rec	*r1,
@@ -450,7 +450,7 @@ xfs_rmapbt_recs_inorder(
 	return 0;
 }
 
-STATIC enum xbtree_key_contig
+enum xbtree_key_contig
 xfs_rmapbt_keys_contiguous(
 	struct xfs_btree_cur		*cur,
 	const union xfs_btree_key	*key1,
diff --git a/fs/xfs/libxfs/xfs_rmap_btree.h b/fs/xfs/libxfs/xfs_rmap_btree.h
index 119b1567cd0e..82b1a7fd8513 100644
--- a/fs/xfs/libxfs/xfs_rmap_btree.h
+++ b/fs/xfs/libxfs/xfs_rmap_btree.h
@@ -11,6 +11,8 @@ struct xfs_btree_cur;
 struct xfs_mount;
 struct xbtree_afakeroot;
 struct xfbtree;
+union xfs_btree_key;
+union xfs_btree_rec;
 
 /* rmaps only exist on crc enabled filesystems */
 #define XFS_RMAP_BLOCK_LEN	XFS_BTREE_SBLOCK_CRC_LEN
@@ -69,4 +71,28 @@ struct xfs_btree_cur *xfs_rmapbt_mem_cursor(struct xfs_perag *pag,
 int xfs_rmapbt_mem_init(struct xfs_mount *mp, struct xfbtree *xfbtree,
 		struct xfs_buftarg *btp, xfs_agnumber_t agno);
 
+/*
+ * Key and record btree ops.  The rmap on-disk key/record format is identical
+ * for the AG rmap btree and the realtime rmap btree, so these are shared by
+ * both (see xfs_rtrmap_btree.c).
+ */
+void xfs_rmapbt_init_key_from_rec(union xfs_btree_key *key,
+		const union xfs_btree_rec *rec);
+void xfs_rmapbt_init_high_key_from_rec(union xfs_btree_key *key,
+		const union xfs_btree_rec *rec);
+void xfs_rmapbt_init_rec_from_cur(struct xfs_btree_cur *cur,
+		union xfs_btree_rec *rec);
+int xfs_rmapbt_cmp_key_with_cur(struct xfs_btree_cur *cur,
+		const union xfs_btree_key *key);
+int xfs_rmapbt_cmp_two_keys(struct xfs_btree_cur *cur,
+		const union xfs_btree_key *k1, const union xfs_btree_key *k2,
+		const union xfs_btree_key *mask);
+int xfs_rmapbt_keys_inorder(struct xfs_btree_cur *cur,
+		const union xfs_btree_key *k1, const union xfs_btree_key *k2);
+int xfs_rmapbt_recs_inorder(struct xfs_btree_cur *cur,
+		const union xfs_btree_rec *r1, const union xfs_btree_rec *r2);
+enum xbtree_key_contig xfs_rmapbt_keys_contiguous(struct xfs_btree_cur *cur,
+		const union xfs_btree_key *key1, const union xfs_btree_key *key2,
+		const union xfs_btree_key *mask);
+
 #endif /* __XFS_RMAP_BTREE_H__ */
-- 
2.55.0