linux-kernel - Re: [PATCH -V4 05/10] hugetlb: add charge/uncharge calls for HugeTLB alloc/free

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]

Message-ID: <20120329081003.GC30465@tiehlicka.suse.cz>
Date:	Thu, 29 Mar 2012 10:10:03 +0200
From:	Michal Hocko <mhocko@...e.cz>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Cc:	linux-mm@...ck.org, mgorman@...e.de,
	kamezawa.hiroyu@...fujitsu.com, dhillf@...il.com,
	aarcange@...hat.com, akpm@...ux-foundation.org, hannes@...xchg.org,
	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org
Subject: Re: [PATCH -V4 05/10] hugetlb: add charge/uncharge calls for HugeTLB
 alloc/free

On Wed 28-03-12 23:09:34, Aneesh Kumar K.V wrote:
> Michal Hocko <mhocko@...e.cz> writes:
> 
> > On Fri 16-03-12 23:09:25, Aneesh Kumar K.V wrote:
> >> From: "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
> >> 
> >> This adds necessary charge/uncharge calls in the HugeTLB code
> >
> > This begs for more description...
> > Other than that it looks correct.
> >
> 
> Updated as below
> 
>     hugetlb: add charge/uncharge calls for HugeTLB alloc/free
>     
>     This adds necessary charge/uncharge calls in the HugeTLB code. We do
>     memcg charge in page alloc and uncharge in compound page destructor.
>     We also need to ignore HugeTLB pages in __mem_cgroup_uncharge_common
>     because that get called from delete_from_page_cache

and from mem_cgroup_end_migration used during soft_offline_page.

Btw., while looking at mem_cgroup_end_migration, I have noticed that you
need to take care of mem_cgroup_prepare_migration as well otherwise the
page would get charged as a normal (shmem) page.

>     
> -aneesh
> 
> --
> To unsubscribe from this list: send the line "unsubscribe cgroups" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

-- 
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9    
Czech Republic
--
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/