The rust null block driver plans to rely on preloading xarray nodes from
the radix_tree_node_cachep kmem_cache.
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
---
lib/radix-tree.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 976b9bd02a1b5..1cf0012b15ade 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -1598,10 +1598,16 @@ void __init radix_tree_init(void)
BUILD_BUG_ON(RADIX_TREE_MAX_TAGS + __GFP_BITS_SHIFT > 32);
BUILD_BUG_ON(ROOT_IS_IDR & ~GFP_ZONEMASK);
BUILD_BUG_ON(XA_CHUNK_SIZE > 255);
- radix_tree_node_cachep = kmem_cache_create("radix_tree_node",
- sizeof(struct radix_tree_node), 0,
- SLAB_PANIC | SLAB_RECLAIM_ACCOUNT,
- radix_tree_node_ctor);
+
+ struct kmem_cache_args args = {
+ .ctor = radix_tree_node_ctor,
+ .sheaf_capacity = 64,
+ };
+
+ radix_tree_node_cachep = kmem_cache_create(
+ "radix_tree_node", sizeof(struct radix_tree_node), &args,
+ SLAB_PANIC | SLAB_RECLAIM_ACCOUNT);
+
ret = cpuhp_setup_state_nocalls(CPUHP_RADIX_DEAD, "lib/radix:dead",
NULL, radix_tree_cpu_dead);
WARN_ON(ret < 0);
--
2.51.2