lkml.org 
[lkml]   [2021]   [Jul]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v6 10/16] memcg: enable accounting for fasync_cache
Date
fasync_struct is used by almost all character device drivers to set up
the fasync queue, and for regular files by the file lease code.
This structure is quite small but long-living and it can be assigned
for any open file.

It makes sense to account for its allocations to restrict the host's
memory consumption from inside the memcg-limited container.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
---
fs/fcntl.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/fcntl.c b/fs/fcntl.c
index dfc72f1..7941559 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -1049,7 +1049,8 @@ static int __init fcntl_init(void)
__FMODE_EXEC | __FMODE_NONOTIFY));

fasync_cache = kmem_cache_create("fasync_cache",
- sizeof(struct fasync_struct), 0, SLAB_PANIC, NULL);
+ sizeof(struct fasync_struct), 0,
+ SLAB_PANIC | SLAB_ACCOUNT, NULL);
return 0;
}

--
1.8.3.1
\
 
 \ /
  Last update: 2021-07-26 21:02    [W:0.204 / U:1.208 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site