[042/110] xfs: move lru refs to the btree ops structure

Commit Message

Darrick J. Wong March 26, 2024, 3:39 a.m. UTC

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

Source kernel commit: 90cfae818dac5227e94e21d0f5250e098432723e

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]>
Reviewed-by: Christoph Hellwig <[e-mail]>
---
 libxfs/xfs_alloc_btree.c    |    4 ++++
 libxfs/xfs_bmap_btree.c     |    2 ++
 libxfs/xfs_btree.c          |   24 ++----------------------
 libxfs/xfs_btree.h          |    3 +++
 libxfs/xfs_ialloc_btree.c   |    4 ++++
 libxfs/xfs_refcount_btree.c |    2 ++
 libxfs/xfs_rmap_btree.c     |    2 ++
 7 files changed, 19 insertions(+), 22 deletions(-)

Patch

diff --git a/libxfs/xfs_alloc_btree.c b/libxfs/xfs_alloc_btree.c
index 6c9781fcf0d2..51c6703db6b1 100644
--- a/libxfs/xfs_alloc_btree.c
+++ b/libxfs/xfs_alloc_btree.c
@@ -456,6 +456,8 @@  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,
 	.alloc_block		= xfs_allocbt_alloc_block,
@@ -481,6 +483,8 @@  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,
+
 	.dup_cursor		= xfs_allocbt_dup_cursor,
 	.set_root		= xfs_allocbt_set_root,
 	.alloc_block		= xfs_allocbt_alloc_block,
diff --git a/libxfs/xfs_bmap_btree.c b/libxfs/xfs_bmap_btree.c
index 2d84118099d8..966e793b08d2 100644
--- a/libxfs/xfs_bmap_btree.c
+++ b/libxfs/xfs_bmap_btree.c
@@ -529,6 +529,8 @@  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,
+
 	.dup_cursor		= xfs_bmbt_dup_cursor,
 	.update_cursor		= xfs_bmbt_update_cursor,
 	.alloc_block		= xfs_bmbt_alloc_block,
diff --git a/libxfs/xfs_btree.c b/libxfs/xfs_btree.c
index 95041d626c4c..150f8ac23d9d 100644
--- a/libxfs/xfs_btree.c
+++ b/libxfs/xfs_btree.c
@@ -1281,32 +1281,12 @@  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 80be40ca8954..39df108a32ef 100644
--- a/libxfs/xfs_btree.h
+++ b/libxfs/xfs_btree.h
@@ -120,6 +120,9 @@  struct xfs_btree_ops {
 	size_t	key_len;
 	size_t	rec_len;
 
+	/* LRU refcount to set on each btree buffer created */
+	unsigned 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 52cc00e4ff1c..332d497eaf71 100644
--- a/libxfs/xfs_ialloc_btree.c
+++ b/libxfs/xfs_ialloc_btree.c
@@ -401,6 +401,8 @@  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,
 	.alloc_block		= xfs_inobt_alloc_block,
@@ -423,6 +425,8 @@  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,
 	.alloc_block		= xfs_finobt_alloc_block,
diff --git a/libxfs/xfs_refcount_btree.c b/libxfs/xfs_refcount_btree.c
index 2f91c7b62ef1..1774b047726f 100644
--- a/libxfs/xfs_refcount_btree.c
+++ b/libxfs/xfs_refcount_btree.c
@@ -320,6 +320,8 @@  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,
 	.alloc_block		= xfs_refcountbt_alloc_block,
diff --git a/libxfs/xfs_rmap_btree.c b/libxfs/xfs_rmap_btree.c
index c3a113c881d8..6a7a9a176c62 100644
--- a/libxfs/xfs_rmap_btree.c
+++ b/libxfs/xfs_rmap_btree.c
@@ -476,6 +476,8 @@  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,
+
 	.dup_cursor		= xfs_rmapbt_dup_cursor,
 	.set_root		= xfs_rmapbt_set_root,
 	.alloc_block		= xfs_rmapbt_alloc_block,