From: Vasily Averin <vvs@virtuozzo.com>
To: cgroups@vger.kernel.org, Michal Hocko <mhocko@kernel.org>,
Shakeel Butt <shakeelb@google.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Roman Gushchin <guro@fb.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
linux-kernel@vger.kernel.org
Subject: [PATCH v4 09/16] memcg: enable accounting for mnt_cache entries
Date: Wed, 28 Apr 2021 09:53:06 +0300 [thread overview]
Message-ID: <11cfc0f7-f79b-6bc5-dd75-ce7e5c56df35@virtuozzo.com> (raw)
In-Reply-To: <8664122a-99d3-7199-869a-781b21b7e712@virtuozzo.com>
The kernel allocates ~400 bytes of 'strcut mount' for any new mount.
Creating a new mount namespace clones most of the parent mounts,
and this can be repeated many times. Additionally, each mount allocates
up to PATH_MAX=4096 bytes for mnt->mnt_devname.
It makes sense to account for these allocations to restrict the host's
memory consumption from inside the memcg-limited container.
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
---
fs/namespace.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/namespace.c b/fs/namespace.c
index 5ecfa349..fc1b50d 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
next prev parent reply other threads:[~2021-04-28 6:53 UTC|newest]
Thread overview: 101+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <8664122a-99d3-7199-869a-781b21b7e712@virtuozzo.com>
2021-04-28 6:51 ` [PATCH v4 00/16] memcg accounting from OpenVZ Vasily Averin
2021-07-15 17:11 ` Shakeel Butt
2021-07-16 4:11 ` Vasily Averin
2021-07-16 12:55 ` Shakeel Butt
2021-07-19 10:44 ` [PATCH v5 " Vasily Averin
2021-07-26 18:59 ` [PATCH v6 00/16] memcg accounting from Vasily Averin
2021-07-26 21:59 ` David Miller
2021-07-27 4:44 ` [PATCH v6 00/16] memcg accounting from OpenVZ Vasily Averin
2021-07-27 5:33 ` [PATCH v7 00/10] " Vasily Averin
[not found] ` <cover.1627362057.git.vvs@virtuozzo.com>
2021-07-27 5:33 ` [PATCH v7 01/10] memcg: enable accounting for mnt_cache entries Vasily Averin
2021-07-27 6:44 ` Shakeel Butt
2021-07-27 7:21 ` Christian Brauner
2021-07-27 5:33 ` [PATCH v7 02/10] memcg: enable accounting for pollfd and select bits arrays Vasily Averin
2021-07-27 21:39 ` Shakeel Butt
2021-07-27 5:33 ` [PATCH v7 03/10] memcg: enable accounting for file lock caches Vasily Averin
2021-07-27 21:41 ` Shakeel Butt
2021-07-27 5:33 ` [PATCH v7 04/10] memcg: enable accounting for fasync_cache Vasily Averin
2021-07-27 21:50 ` Shakeel Butt
2021-07-27 5:33 ` [PATCH v7 05/10] memcg: enable accounting for new namesapces and struct nsproxy Vasily Averin
2021-07-27 21:51 ` Shakeel Butt
2021-07-27 5:33 ` [PATCH v7 06/10] memcg: enable accounting of ipc resources Vasily Averin
2021-07-27 22:33 ` Shakeel Butt
2021-07-27 5:34 ` [PATCH v7 07/10] memcg: enable accounting for signals Vasily Averin
2021-07-27 5:34 ` [PATCH v7 08/10] memcg: enable accounting for posix_timers_cache slab Vasily Averin
2021-07-27 22:33 ` Shakeel Butt
2021-07-27 5:34 ` [PATCH v7 09/10] memcg: enable accounting for tty-related objects Vasily Averin
2021-07-27 6:09 ` Greg Kroah-Hartman
2021-07-27 6:54 ` Jiri Slaby
2021-07-27 8:02 ` Vasily Averin
2021-07-27 9:26 ` [PATCH TTY] memcg: drop GFP_KERNEL_ACCOUNT use in tty_save_termios() Vasily Averin
2021-07-27 9:32 ` Greg Kroah-Hartman
2022-02-28 9:13 ` [PATCH v2] memcg: enable accounting for tty-related objects Vasily Averin
2021-07-27 9:30 ` [PATCH v7 09/10] " Greg Kroah-Hartman
2021-07-27 5:34 ` [PATCH v7 10/10] memcg: enable accounting for ldt_struct objects Vasily Averin
2021-07-27 22:36 ` Shakeel Butt
[not found] ` <cover.1627321321.git.vvs@virtuozzo.com>
2021-07-26 18:59 ` [PATCH v6 01/16] memcg: enable accounting for net_device and Tx/Rx queues Vasily Averin
2021-07-26 19:00 ` [PATCH v6 02/16] memcg: enable accounting for IP address and routing-related objects Vasily Averin
2021-07-26 19:00 ` [PATCH v6 03/16] memcg: enable accounting for inet_bin_bucket cache Vasily Averin
2021-07-26 19:00 ` [PATCH v6 04/16] memcg: enable accounting for VLAN group array Vasily Averin
2021-07-26 19:00 ` [PATCH v6 05/16] memcg: ipv6/sit: account and don't WARN on ip_tunnel_prl structs allocation Vasily Averin
2021-07-26 19:00 ` [PATCH v6 06/16] memcg: enable accounting for scm_fp_list objects Vasily Averin
2021-07-26 19:00 ` [PATCH v6 07/16] memcg: enable accounting for mnt_cache entries Vasily Averin
2021-07-26 19:00 ` [PATCH v6 08/16] memcg: enable accounting for pollfd and select bits arrays Vasily Averin
2021-07-26 19:01 ` [PATCH v6 09/16] memcg: enable accounting for file lock caches Vasily Averin
2021-07-26 19:01 ` [PATCH v6 10/16] memcg: enable accounting for fasync_cache Vasily Averin
2021-07-26 19:01 ` [PATCH v6 11/16] memcg: enable accounting for new namesapces and struct nsproxy Vasily Averin
2021-07-26 19:58 ` Kirill Tkhai
2021-07-26 19:01 ` [PATCH v6 12/16] memcg: enable accounting of ipc resources Vasily Averin
2021-07-26 19:01 ` [PATCH v6 13/16] memcg: enable accounting for signals Vasily Averin
2021-07-26 19:01 ` [PATCH v6 14/16] memcg: enable accounting for posix_timers_cache slab Vasily Averin
2021-07-26 19:01 ` [PATCH v6 15/16] memcg: enable accounting for tty-related objects Vasily Averin
2021-07-26 19:01 ` [PATCH v6 16/16] memcg: enable accounting for ldt_struct objects Vasily Averin
[not found] ` <cover.1626688654.git.vvs@virtuozzo.com>
2021-07-19 10:44 ` [PATCH v5 01/16] memcg: enable accounting for net_device and Tx/Rx queues Vasily Averin
2021-07-19 10:44 ` [PATCH v5 02/16] memcg: enable accounting for IP address and routing-related objects Vasily Averin
2021-07-19 14:00 ` Dmitry Safonov
2021-07-19 14:22 ` Shakeel Butt
2021-07-19 14:24 ` Dmitry Safonov
2021-07-20 19:26 ` Shakeel Butt
2021-07-26 10:23 ` Vasily Averin
2021-07-26 13:48 ` Shakeel Butt
2021-07-26 16:53 ` [PATCH] memcg: replace in_interrupt() by !in_task() in active_memcg() Vasily Averin
2021-07-26 16:57 ` Shakeel Butt
2021-07-19 10:44 ` [PATCH v5 03/16] memcg: enable accounting for inet_bin_bucket cache Vasily Averin
2021-07-19 10:44 ` [PATCH v5 04/16] memcg: enable accounting for VLAN group array Vasily Averin
2021-07-19 10:44 ` [PATCH v5 05/16] memcg: ipv6/sit: account and don't WARN on ip_tunnel_prl structs allocation Vasily Averin
2021-07-19 10:44 ` [PATCH v5 06/16] memcg: enable accounting for scm_fp_list objects Vasily Averin
2021-07-19 10:45 ` [PATCH v5 07/16] memcg: enable accounting for mnt_cache entries Vasily Averin
2021-07-19 10:45 ` [PATCH v5 08/16] memcg: enable accounting for pollfd and select bits arrays Vasily Averin
2021-07-19 10:45 ` [PATCH v5 09/16] memcg: enable accounting for file lock caches Vasily Averin
2021-07-19 10:45 ` [PATCH v5 10/16] memcg: enable accounting for fasync_cache Vasily Averin
2021-07-19 10:45 ` [PATCH v5 11/16] memcg: enable accounting for new namesapces and struct nsproxy Vasily Averin
2021-07-19 10:45 ` [PATCH v5 12/16] memcg: enable accounting of ipc resources Vasily Averin
2021-07-19 10:45 ` [PATCH v5 13/16] memcg: enable accounting for signals Vasily Averin
2021-07-19 17:32 ` Eric W. Biederman
2021-07-20 8:35 ` Vasily Averin
2021-07-20 14:37 ` Shakeel Butt
2021-07-20 16:42 ` Eric W. Biederman
2021-07-20 19:15 ` Shakeel Butt
2021-07-19 10:45 ` [PATCH v5 14/16] memcg: enable accounting for posix_timers_cache slab Vasily Averin
2021-07-19 10:45 ` [PATCH v5 15/16] memcg: enable accounting for tty-related objects Vasily Averin
2021-07-19 10:46 ` [PATCH v5 16/16] memcg: enable accounting for ldt_struct objects Vasily Averin
2021-04-28 6:51 ` [PATCH v4 01/16] memcg: enable accounting for net_device and Tx/Rx queues Vasily Averin
2021-04-28 6:51 ` [PATCH v4 02/16] memcg: enable accounting for IP address and routing-related objects Vasily Averin
2021-04-28 6:51 ` [PATCH v4 03/16] memcg: enable accounting for inet_bin_bucket cache Vasily Averin
2021-04-28 6:52 ` [PATCH v4 04/16] memcg: enable accounting for VLAN group array Vasily Averin
2021-04-28 6:52 ` [PATCH v4 05/16] memcg: ipv6/sit: account and don't WARN on ip_tunnel_prl structs allocation Vasily Averin
2021-04-28 6:52 ` [PATCH v4 06/16] memcg: enable accounting for scm_fp_list objects Vasily Averin
2021-04-28 6:52 ` [PATCH v4 07/16] memcg: enable accounting for new namesapces and struct nsproxy Vasily Averin
2021-05-07 13:45 ` Serge E. Hallyn
2021-05-07 15:03 ` Christian Brauner
2021-04-28 6:52 ` [PATCH v4 08/16] memcg: enable accounting of ipc resources Vasily Averin
2021-04-28 6:53 ` Vasily Averin [this message]
2021-04-28 6:53 ` [PATCH v4 10/16] memcg: enable accounting for pollfd and select bits arrays Vasily Averin
2021-04-28 6:53 ` [PATCH v4 11/16] memcg: enable accounting for signals Vasily Averin
2021-04-28 6:53 ` [PATCH v4 12/16] memcg: enable accounting for posix_timers_cache slab Vasily Averin
2021-05-07 15:48 ` Thomas Gleixner
2021-04-28 6:53 ` [PATCH v4 13/16] memcg: enable accounting for file lock caches Vasily Averin
2021-04-28 6:54 ` [PATCH v4 14/16] memcg: enable accounting for fasync_cache Vasily Averin
2021-04-28 6:54 ` [PATCH v4 15/16] memcg: enable accounting for tty-related objects Vasily Averin
2021-04-28 7:38 ` Greg Kroah-Hartman
2021-04-28 6:54 ` [PATCH v4 16/16] memcg: enable accounting for ldt_struct objects Vasily Averin
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