[1/6] xfs: move lru refs to the btree ops structure

Commit Message

Darrick J. Wong Dec. 31, 2023, 10:22 p.m. UTC

From: Darrick J. Wong <[e-mail]>

Move the btree buffer LRU refcount to the btree ops structure so that we
can eliminate the last bc_btnum switch in the generic btree code.  We're
about to create repair-specific btree types, and we don't want that
stuff cluttering up libxfs.

Signed-off-by: Darrick J. Wong <[e-mail]>
---
 libxfs/xfs_alloc_btree.c    |    2 ++
 libxfs/xfs_bmap_btree.c     |    1 +
 libxfs/xfs_btree.c          |   24 ++----------------------
 libxfs/xfs_btree.h          |    3 +++
 libxfs/xfs_ialloc_btree.c   |    2 ++
 libxfs/xfs_refcount_btree.c |    1 +
 libxfs/xfs_rmap_btree.c     |    2 ++
 7 files changed, 13 insertions(+), 22 deletions(-)

Patch

diff --git a/libxfs/xfs_alloc_btree.c b/libxfs/xfs_alloc_btree.c
index 97d19203550..93faa832e5b 100644
--- a/libxfs/xfs_alloc_btree.c
+++ b/libxfs/xfs_alloc_btree.c
@@ -455,6 +455,7 @@  xfs_allocbt_keys_contiguous(
 const struct xfs_btree_ops xfs_bnobt_ops = {
 	.rec_len		= sizeof(xfs_alloc_rec_t),
 	.key_len		= sizeof(xfs_alloc_key_t),
+	.lru_refs		= XFS_ALLOC_BTREE_REF,
 
 	.dup_cursor		= xfs_allocbt_dup_cursor,
 	.set_root		= xfs_allocbt_set_root,
@@ -478,6 +479,7 @@  const struct xfs_btree_ops xfs_bnobt_ops = {
 const struct xfs_btree_ops xfs_cntbt_ops = {
 	.rec_len		= sizeof(xfs_alloc_rec_t),
 	.key_len		= sizeof(xfs_alloc_key_t),
+	.lru_refs		= XFS_ALLOC_BTREE_REF,
 	.geom_flags		= XFS_BTREE_LASTREC_UPDATE,
 
 	.dup_cursor		= xfs_allocbt_dup_cursor,
diff --git a/libxfs/xfs_bmap_btree.c b/libxfs/xfs_bmap_btree.c
index 1dd85d4d41c..160f7b08ffd 100644
--- a/libxfs/xfs_bmap_btree.c
+++ b/libxfs/xfs_bmap_btree.c
@@ -514,6 +514,7 @@  xfs_bmbt_keys_contiguous(
 const struct xfs_btree_ops xfs_bmbt_ops = {
 	.rec_len		= sizeof(xfs_bmbt_rec_t),
 	.key_len		= sizeof(xfs_bmbt_key_t),
+	.lru_refs		= XFS_BMAP_BTREE_REF,
 	.geom_flags		= XFS_BTREE_LONG_PTRS | XFS_BTREE_ROOT_IN_INODE,
 
 	.dup_cursor		= xfs_bmbt_dup_cursor,
diff --git a/libxfs/xfs_btree.c b/libxfs/xfs_btree.c
index 6705a6d83f3..7cc6379a113 100644
--- a/libxfs/xfs_btree.c
+++ b/libxfs/xfs_btree.c
@@ -1347,32 +1347,12 @@  xfs_btree_buf_to_ptr(
 	}
 }
 
-STATIC void
+static inline void
 xfs_btree_set_refs(
 	struct xfs_btree_cur	*cur,
 	struct xfs_buf		*bp)
 {
-	switch (cur->bc_btnum) {
-	case XFS_BTNUM_BNO:
-	case XFS_BTNUM_CNT:
-		xfs_buf_set_ref(bp, XFS_ALLOC_BTREE_REF);
-		break;
-	case XFS_BTNUM_INO:
-	case XFS_BTNUM_FINO:
-		xfs_buf_set_ref(bp, XFS_INO_BTREE_REF);
-		break;
-	case XFS_BTNUM_BMAP:
-		xfs_buf_set_ref(bp, XFS_BMAP_BTREE_REF);
-		break;
-	case XFS_BTNUM_RMAP:
-		xfs_buf_set_ref(bp, XFS_RMAP_BTREE_REF);
-		break;
-	case XFS_BTNUM_REFC:
-		xfs_buf_set_ref(bp, XFS_REFC_BTREE_REF);
-		break;
-	default:
-		ASSERT(0);
-	}
+	xfs_buf_set_ref(bp, cur->bc_ops->lru_refs);
 }
 
 int
diff --git a/libxfs/xfs_btree.h b/libxfs/xfs_btree.h
index 41000bd6ccc..edbcd4f0e98 100644
--- a/libxfs/xfs_btree.h
+++ b/libxfs/xfs_btree.h
@@ -120,6 +120,9 @@  struct xfs_btree_ops {
 	/* XFS_BTREE_* flags that determine the geometry of the btree */
 	unsigned int	geom_flags;
 
+	/* LRU refcount to set on each btree buffer created */
+	int	lru_refs;
+
 	/* cursor operations */
 	struct xfs_btree_cur *(*dup_cursor)(struct xfs_btree_cur *);
 	void	(*update_cursor)(struct xfs_btree_cur *src,
diff --git a/libxfs/xfs_ialloc_btree.c b/libxfs/xfs_ialloc_btree.c
index 52cc00e4ff1..4275244b15c 100644
--- a/libxfs/xfs_ialloc_btree.c
+++ b/libxfs/xfs_ialloc_btree.c
@@ -400,6 +400,7 @@  xfs_inobt_keys_contiguous(
 const struct xfs_btree_ops xfs_inobt_ops = {
 	.rec_len		= sizeof(xfs_inobt_rec_t),
 	.key_len		= sizeof(xfs_inobt_key_t),
+	.lru_refs		= XFS_INO_BTREE_REF,
 
 	.dup_cursor		= xfs_inobt_dup_cursor,
 	.set_root		= xfs_inobt_set_root,
@@ -422,6 +423,7 @@  const struct xfs_btree_ops xfs_inobt_ops = {
 const struct xfs_btree_ops xfs_finobt_ops = {
 	.rec_len		= sizeof(xfs_inobt_rec_t),
 	.key_len		= sizeof(xfs_inobt_key_t),
+	.lru_refs		= XFS_INO_BTREE_REF,
 
 	.dup_cursor		= xfs_inobt_dup_cursor,
 	.set_root		= xfs_finobt_set_root,
diff --git a/libxfs/xfs_refcount_btree.c b/libxfs/xfs_refcount_btree.c
index 2f91c7b62ef..ab8925051a9 100644
--- a/libxfs/xfs_refcount_btree.c
+++ b/libxfs/xfs_refcount_btree.c
@@ -319,6 +319,7 @@  xfs_refcountbt_keys_contiguous(
 const struct xfs_btree_ops xfs_refcountbt_ops = {
 	.rec_len		= sizeof(struct xfs_refcount_rec),
 	.key_len		= sizeof(struct xfs_refcount_key),
+	.lru_refs		= XFS_REFC_BTREE_REF,
 
 	.dup_cursor		= xfs_refcountbt_dup_cursor,
 	.set_root		= xfs_refcountbt_set_root,
diff --git a/libxfs/xfs_rmap_btree.c b/libxfs/xfs_rmap_btree.c
index e36237bf750..a378bd5daf8 100644
--- a/libxfs/xfs_rmap_btree.c
+++ b/libxfs/xfs_rmap_btree.c
@@ -487,6 +487,7 @@  xfs_rmapbt_keys_contiguous(
 const struct xfs_btree_ops xfs_rmapbt_ops = {
 	.rec_len		= sizeof(struct xfs_rmap_rec),
 	.key_len		= 2 * sizeof(struct xfs_rmap_key),
+	.lru_refs		= XFS_RMAP_BTREE_REF,
 	.geom_flags		= XFS_BTREE_CRC_BLOCKS | XFS_BTREE_OVERLAPPING,
 
 	.dup_cursor		= xfs_rmapbt_dup_cursor,
@@ -611,6 +612,7 @@  static const struct xfs_buf_ops xfs_rmapbt_mem_buf_ops = {
 static const struct xfs_btree_ops xfs_rmapbt_mem_ops = {
 	.rec_len		= sizeof(struct xfs_rmap_rec),
 	.key_len		= 2 * sizeof(struct xfs_rmap_key),
+	.lru_refs		= XFS_RMAP_BTREE_REF,
 	.geom_flags		= XFS_BTREE_CRC_BLOCKS | XFS_BTREE_OVERLAPPING |
 				  XFS_BTREE_IN_XFILE,