[PATCH 7/9] memcg: accounting for mnt_cache entries
From: Vasily Averin <hidden>
Date: 2021-03-09 08:04:44
Also in:
cgroups
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Objects can be created from memcg-limited tasks but its misuse may lead to host OOM. Signed-off-by: Vasily Averin <redacted> --- fs/namespace.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
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),
--
1.8.3.1