Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-25 13:41:51 +00:00
Code Issues Packages Projects Releases Wiki Activity

inet: Cleanup on charging memory for newly accepted sockets

Browse Source 
If there is no net-memcg associated with the sock, don't bother
calculating its memory usage for charge.

Signed-off-by: Abel Wu <wuyun.abel@bytedance.com>
Link: https://lore.kernel.org/r/20230620092712.16217-1-wuyun.abel@bytedance.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Abel Wu 2023-06-20 17:27:11 +08:00 committed by Jakub Kicinski
parent ca4fa87435
commit 53bf91641a
1 changed files with 10 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
net/ipv4/inet_connection_sock.c
View File

@ -706,20 +706,23 @@ struct sock *inet_csk_accept(struct sock *sk, int flags, int *err, bool kern)
out:
release_sock(sk);
if (newsk && mem_cgroup_sockets_enabled) {
int amt;
int amt = 0;
/* atomically get the memory usage, set and charge the
* newsk->sk_memcg.
*/
lock_sock(newsk);
/* The socket has not been accepted yet, no need to look at
* newsk->sk_wmem_queued.
*/
amt = sk_mem_pages(newsk->sk_forward_alloc +
atomic_read(&newsk->sk_rmem_alloc));
mem_cgroup_sk_alloc(newsk);
if (newsk->sk_memcg && amt)
if (newsk->sk_memcg) {
/* The socket has not been accepted yet, no need
* to look at newsk->sk_wmem_queued.
*/
amt = sk_mem_pages(newsk->sk_forward_alloc +
atomic_read(&newsk->sk_rmem_alloc));
}
if (amt)
mem_cgroup_charge_skmem(newsk->sk_memcg, amt,
GFP_KERNEL | __GFP_NOFAIL);