From: Vasily Averin <vvs@xxxxxxxxxxxxx> Subject: memcg: enable accounting for file lock caches 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. Link: https://lkml.kernel.org/r/b009f4c7-f0ab-c0ec-8e83-918f47d677da@xxxxxxxxxxxxx Signed-off-by: Vasily Averin <vvs@xxxxxxxxxxxxx> Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx> Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx> Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx> Cc: Andrei Vagin <avagin@xxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxx> Cc: Christian Brauner <christian.brauner@xxxxxxxxxx> Cc: Dmitry Safonov <0x7f454c46@xxxxxxxxx> Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: "J. Bruce Fields" <bfields@xxxxxxxxxxxx> Cc: Jeff Layton <jlayton@xxxxxxxxxx> Cc: Jens Axboe <axboe@xxxxxxxxx> Cc: Jiri Slaby <jirislaby@xxxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxxxxx> Cc: Oleg Nesterov <oleg@xxxxxxxxxx> Cc: Roman Gushchin <guro@xxxxxx> Cc: Serge Hallyn <serge@xxxxxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx> Cc: Yutian Yang <nglaive@xxxxxxxxx> Cc: Zefan Li <lizefan.x@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/locks.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/fs/locks.c~memcg-enable-accounting-for-file-lock-caches +++ a/fs/locks.c @@ -3056,10 +3056,12 @@ 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); _
