linux-kernel - Re: [PATCH] mm: memcg: keep root group unchanged if fail to create new

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 12 Dec 2011 21:49:18 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	Hugh Dickins <hughd@...gle.com>,
	Balbir Singh <bsingharora@...il.com>,
	David Rientjes <rientjes@...gle.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: memcg: keep root group unchanged if fail to create new

On Mon, Dec 12, 2011 at 9:11 PM, Michal Hocko <mhocko@...e.cz> wrote:
>
> Hillf could you update the patch please?
>
Hi Michal,

Please review again, thanks.
Hillf

===CUT HERE===
From: Hillf Danton <dhillf@...il.com>
Subject: [PATCH] mm: memcg: keep root group unchanged if fail to create new

If the request is to create non-root group and we fail to meet it, we should
leave the root unchanged.

Signed-off-by: Hillf Danton <dhillf@...il.com>
Acked-by: Hugh Dickins <hughd@...gle.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
---

--- a/mm/memcontrol.c	Fri Dec  9 21:57:40 2011
+++ b/mm/memcontrol.c	Mon Dec 12 21:47:14 2011
@@ -4848,9 +4848,9 @@ mem_cgroup_create(struct cgroup_subsys *
 		int cpu;
 		enable_swap_cgroup();
 		parent = NULL;
-		root_mem_cgroup = memcg;
 		if (mem_cgroup_soft_limit_tree_init())
 			goto free_out;
+		root_mem_cgroup = memcg;
 		for_each_possible_cpu(cpu) {
 			struct memcg_stock_pcp *stock =
 						&per_cpu(memcg_stock, cpu);
@@ -4888,7 +4888,6 @@ mem_cgroup_create(struct cgroup_subsys *
 	return &memcg->css;
 free_out:
 	__mem_cgroup_free(memcg);
-	root_mem_cgroup = NULL;
 	return ERR_PTR(error);
 }
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/