[PATCH v5 09/16] memcg: enable accounting for file lock caches
From: Vasily Averin <hidden>
Date: 2021-07-19 10:45:41
Also in:
linux-fsdevel, lkml
Subsystem:
file locking (flock() and fcntl()/lockf()), filesystems (vfs and infrastructure), the rest · Maintainers:
Jeff Layton, Chuck Lever, Alexander Viro, Christian Brauner, Linus Torvalds
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 <redacted> --- fs/locks.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/locks.c b/fs/locks.c
index 74b2a1d..1bc7ede 100644
--- a/fs/locks.c
+++ b/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);
--
1.8.3.1