linux-kernel - [PATCH v5 08/14] mm, vma: use percpu sheaves for vm_area

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250723-slub-percpu-caches-v5-8-b792cd830f5d@suse.cz>
Date: Wed, 23 Jul 2025 15:34:41 +0200
From: Vlastimil Babka <vbabka@...e.cz>
To: Suren Baghdasaryan <surenb@...gle.com>, 
 "Liam R. Howlett" <Liam.Howlett@...cle.com>, 
 Christoph Lameter <cl@...two.org>, David Rientjes <rientjes@...gle.com>
Cc: Roman Gushchin <roman.gushchin@...ux.dev>, 
 Harry Yoo <harry.yoo@...cle.com>, Uladzislau Rezki <urezki@...il.com>, 
 linux-mm@...ck.org, linux-kernel@...r.kernel.org, rcu@...r.kernel.org, 
 maple-tree@...ts.infradead.org, vbabka@...e.cz
Subject: [PATCH v5 08/14] mm, vma: use percpu sheaves for vm_area_struct
 cache

Create the vm_area_struct cache with percpu sheaves of size 32 to
improve its performance.

Reviewed-by: Suren Baghdasaryan <surenb@...gle.com>
Signed-off-by: Vlastimil Babka <vbabka@...e.cz>
---
 mm/vma_init.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/vma_init.c b/mm/vma_init.c
index 8e53c7943561e7324e7992946b4065dec1149b82..52c6b55fac4519e0da39ca75ad018e14449d1d95 100644
--- a/mm/vma_init.c
+++ b/mm/vma_init.c
@@ -16,6 +16,7 @@ void __init vma_state_init(void)
 	struct kmem_cache_args args = {
 		.use_freeptr_offset = true,
 		.freeptr_offset = offsetof(struct vm_area_struct, vm_freeptr),
+		.sheaf_capacity = 32,
 	};

 	vm_area_cachep = kmem_cache_create("vm_area_struct",

-- 
2.50.1