diff mbox series

[7/9] memcg: accounting for mnt_cache entries

Message ID a8495a6e-3f9a-c4ac-8692-97a4479e2faa@virtuozzo.com (mailing list archive)
State New, archived
Headers show
Series memcg accounting from OpenVZ | expand

Commit Message

Vasily Averin March 9, 2021, 8:04 a.m. UTC 
Objects can be created from memcg-limited tasks
but its misuse may lead to host OOM.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
---
 fs/namespace.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/fs/namespace.c b/fs/namespace.c
index 56bb5a5..d550c2a 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -203,7 +203,8 @@  static struct mount *alloc_vfsmnt(const char *name)
 			goto out_free_cache;
 
 		if (name) {
-			mnt->mnt_devname = kstrdup_const(name, GFP_KERNEL);
+			mnt->mnt_devname = kstrdup_const(name,
+							 GFP_KERNEL_ACCOUNT);
 			if (!mnt->mnt_devname)
 				goto out_free_id;
 		}
@@ -4213,7 +4214,7 @@  void __init mnt_init(void)
 	int err;
 
 	mnt_cache = kmem_cache_create("mnt_cache", sizeof(struct mount),
-			0, SLAB_HWCACHE_ALIGN | SLAB_PANIC, NULL);
+			0, SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT, NULL);
 
 	mount_hashtable = alloc_large_system_hash("Mount-cache",
 				sizeof(struct hlist_head),