xfs: make the keys and records passed to btree inorder functions const

The inorder functions are simple predicates, which means that they don't
modify the parameters.  Mark them all const.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

fs/xfs/libxfs/xfs_alloc_btree.c

@@ -377,8 +377,8 @@ const struct xfs_buf_ops xfs_cntbt_buf_ops = {
 STATIC int
 xfs_bnobt_keys_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_key	*k1,
-	union xfs_btree_key	*k2)
+	const union xfs_btree_key	*k1,
+	const union xfs_btree_key	*k2)
 {
 	return be32_to_cpu(k1->alloc.ar_startblock) <
 	       be32_to_cpu(k2->alloc.ar_startblock);
@@ -387,8 +387,8 @@ xfs_bnobt_keys_inorder(
 STATIC int
 xfs_bnobt_recs_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_rec	*r1,
-	union xfs_btree_rec	*r2)
+	const union xfs_btree_rec	*r1,
+	const union xfs_btree_rec	*r2)
 {
 	return be32_to_cpu(r1->alloc.ar_startblock) +
 		be32_to_cpu(r1->alloc.ar_blockcount) <=
@@ -398,8 +398,8 @@ xfs_bnobt_recs_inorder(
 STATIC int
 xfs_cntbt_keys_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_key	*k1,
-	union xfs_btree_key	*k2)
+	const union xfs_btree_key	*k1,
+	const union xfs_btree_key	*k2)
 {
 	return be32_to_cpu(k1->alloc.ar_blockcount) <
 		be32_to_cpu(k2->alloc.ar_blockcount) ||
@@ -411,8 +411,8 @@ xfs_cntbt_keys_inorder(
 STATIC int
 xfs_cntbt_recs_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_rec	*r1,
-	union xfs_btree_rec	*r2)
+	const union xfs_btree_rec	*r1,
+	const union xfs_btree_rec	*r2)
 {
 	return be32_to_cpu(r1->alloc.ar_blockcount) <
 		be32_to_cpu(r2->alloc.ar_blockcount) ||

fs/xfs/libxfs/xfs_bmap_btree.c

@@ -498,8 +498,8 @@ const struct xfs_buf_ops xfs_bmbt_buf_ops = {
 STATIC int
 xfs_bmbt_keys_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_key	*k1,
-	union xfs_btree_key	*k2)
+	const union xfs_btree_key	*k1,
+	const union xfs_btree_key	*k2)
 {
 	return be64_to_cpu(k1->bmbt.br_startoff) <
 		be64_to_cpu(k2->bmbt.br_startoff);
@@ -508,8 +508,8 @@ xfs_bmbt_keys_inorder(
 STATIC int
 xfs_bmbt_recs_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_rec	*r1,
-	union xfs_btree_rec	*r2)
+	const union xfs_btree_rec	*r1,
+	const union xfs_btree_rec	*r2)
 {
 	return xfs_bmbt_disk_get_startoff(&r1->bmbt) +
 		xfs_bmbt_disk_get_blockcount(&r1->bmbt) <=

fs/xfs/libxfs/xfs_btree.h

@@ -154,13 +154,13 @@ struct xfs_btree_ops {
 
 	/* check that k1 is lower than k2 */
 	int	(*keys_inorder)(struct xfs_btree_cur *cur,
-				union xfs_btree_key *k1,
-				union xfs_btree_key *k2);
+				const union xfs_btree_key *k1,
+				const union xfs_btree_key *k2);
 
 	/* check that r1 is lower than r2 */
 	int	(*recs_inorder)(struct xfs_btree_cur *cur,
-				union xfs_btree_rec *r1,
-				union xfs_btree_rec *r2);
+				const union xfs_btree_rec *r1,
+				const union xfs_btree_rec *r2);
 };
 
 /*

fs/xfs/libxfs/xfs_ialloc_btree.c

@@ -361,8 +361,8 @@ const struct xfs_buf_ops xfs_finobt_buf_ops = {
 STATIC int
 xfs_inobt_keys_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_key	*k1,
-	union xfs_btree_key	*k2)
+	const union xfs_btree_key	*k1,
+	const union xfs_btree_key	*k2)
 {
 	return be32_to_cpu(k1->inobt.ir_startino) <
 		be32_to_cpu(k2->inobt.ir_startino);
@@ -371,8 +371,8 @@ xfs_inobt_keys_inorder(
 STATIC int
 xfs_inobt_recs_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_rec	*r1,
-	union xfs_btree_rec	*r2)
+	const union xfs_btree_rec	*r1,
+	const union xfs_btree_rec	*r2)
 {
 	return be32_to_cpu(r1->inobt.ir_startino) + XFS_INODES_PER_CHUNK <=
 		be32_to_cpu(r2->inobt.ir_startino);

fs/xfs/libxfs/xfs_refcount_btree.c

@@ -270,8 +270,8 @@ const struct xfs_buf_ops xfs_refcountbt_buf_ops = {
 STATIC int
 xfs_refcountbt_keys_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_key	*k1,
-	union xfs_btree_key	*k2)
+	const union xfs_btree_key	*k1,
+	const union xfs_btree_key	*k2)
 {
 	return be32_to_cpu(k1->refc.rc_startblock) <
 	       be32_to_cpu(k2->refc.rc_startblock);
@@ -280,8 +280,8 @@ xfs_refcountbt_keys_inorder(
 STATIC int
 xfs_refcountbt_recs_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_rec	*r1,
-	union xfs_btree_rec	*r2)
+	const union xfs_btree_rec	*r1,
+	const union xfs_btree_rec	*r2)
 {
 	return  be32_to_cpu(r1->refc.rc_startblock) +
 		be32_to_cpu(r1->refc.rc_blockcount) <=

fs/xfs/libxfs/xfs_rmap_btree.c

@@ -365,8 +365,8 @@ const struct xfs_buf_ops xfs_rmapbt_buf_ops = {
 STATIC int
 xfs_rmapbt_keys_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_key	*k1,
-	union xfs_btree_key	*k2)
+	const union xfs_btree_key	*k1,
+	const union xfs_btree_key	*k2)
 {
 	uint32_t		x;
 	uint32_t		y;
@@ -395,8 +395,8 @@ xfs_rmapbt_keys_inorder(
 STATIC int
 xfs_rmapbt_recs_inorder(
 	struct xfs_btree_cur		*cur,
-	union xfs_btree_rec	*r1,
-	union xfs_btree_rec	*r2)
+	const union xfs_btree_rec	*r1,
+	const union xfs_btree_rec	*r2)
 {
 	uint32_t		x;
 	uint32_t		y;