[PATCH slab/for-next 02/14] lib/maple_tree: specify SLAB_MAY_ACCOUNT for maple_node cache

[Harry Yoo (Meta)]

Maple tree users can pass accounted gfp flags down to node allocations
(e.g. arm64 KVM's smccc_filter uses GFP_KERNEL_ACCOUNT). Specify
SLAB_MAY_ACCOUNT when the object may be charged to a memcg.
__GFP_ACCOUNT without SLAB_MAY_ACCOUNT will not be allowed.

Path: mtree_insert_range(GFP_KERNEL_ACCOUNT) -> mas_nomem()
  -> mas_alloc_nodes() -> kmem_cache_alloc(maple_node_cache)

Assisted-by: LLM
Cc: "Liam R. Howlett" <liam@xxxxxxxxxxxxx>
Cc: Alice Ryhl <aliceryhl@xxxxxxxxxx>
Cc: Andrew Ballance <andrewjballance@xxxxxxxxx>
Cc: maple-tree@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Harry Yoo (Meta) <harry@xxxxxxxxxx>
---
 lib/maple_tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 1aba6cced713..e4794b31e5bf 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -5790,7 +5790,7 @@ void __init maple_tree_init(void)
 
 	maple_node_cache = kmem_cache_create("maple_node",
 			sizeof(struct maple_node), &args,
-			SLAB_PANIC);
+			SLAB_PANIC | SLAB_MAY_ACCOUNT);
 }
 
 /**

-- 
2.54.0