From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vasily Averin Subject: [PATCH v4 13/16] memcg: enable accounting for file lock caches Date: Wed, 28 Apr 2021 09:53:57 +0300 Message-ID: References: <8664122a-99d3-7199-869a-781b21b7e712@virtuozzo.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=virtuozzo.com; s=relay; h=Content-Type:MIME-Version:Date:Message-ID:Subject :From; bh=eADjA01K+TnHHtyYlBexLquKc6awC9QEfz0Y5YJanY8=; b=c7lGiwLJahOa7skwa+A 4pEUvtkYVVy47AszeRrmITfHSoNZWUS+EpjqTU7FCA145mtUxdRjHlTZ0j4CclhjsrPbXpTUb0oqZ LuLvqq8GdR//Aq4aLh4CYkVFnByuq0SpgQWAJvu89tr558idsHE/2zqX9pQESJSVNWlLTwiUW/4= In-Reply-To: <8664122a-99d3-7199-869a-781b21b7e712-5HdwGun5lf+gSpxsJD1C4w@public.gmane.org> Content-Language: en-US List-ID: Content-Type: text/plain; charset="us-ascii" To: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Michal Hocko , Shakeel Butt , Johannes Weiner , Vladimir Davydov Cc: Roman Gushchin , Jeff Layton , "J. Bruce Fields" , Alexander Viro , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org User can create file locks for each open file and force kernel to allocate small but long-living objects per each open file. It makes sense to account for these objects to limit the host's memory consumption from inside the memcg-limited container. Signed-off-by: Vasily Averin --- fs/locks.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/locks.c b/fs/locks.c index 6125d2d..fb751f3 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -3007,10 +3007,12 @@ static int __init filelock_init(void) int i; flctx_cache = kmem_cache_create("file_lock_ctx", - sizeof(struct file_lock_context), 0, SLAB_PANIC, NULL); + sizeof(struct file_lock_context), 0, + SLAB_PANIC | SLAB_ACCOUNT, NULL); filelock_cache = kmem_cache_create("file_lock_cache", - sizeof(struct file_lock), 0, SLAB_PANIC, NULL); + sizeof(struct file_lock), 0, + SLAB_PANIC | SLAB_ACCOUNT, NULL); for_each_possible_cpu(i) { struct file_lock_list_struct *fll = per_cpu_ptr(&file_lock_list, i); -- 1.8.3.1