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From: Alexey Dobriyan <adobriyan-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Michal Hocko <mhocko-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Aristeu Rozanski
	<arozansk-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Andrew Morton
	<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
	Davidlohr Bueso <dave-h16yJtLeMjHk1uMJSBkQmQ@public.gmane.org>,
	Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
	Vladimir Davydov
	<vdavydov.dev-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Stefan Schimanski <sttts-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH] IPC: account for kmem usage on mqueue and msg
Date: Tue, 18 Oct 2016 22:30:21 +0300	[thread overview]
Message-ID: <20161018193021.GA2953@p183.telecom.by> (raw)
In-Reply-To: <20161018182619.GB27792-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>

On Tue, Oct 18, 2016 at 08:26:19PM +0200, Michal Hocko wrote:
> On Tue 18-10-16 11:54:35, Aristeu Rozanski wrote:
> > When kmem accounting switched from account by default to only account if
> > flagged by __GFP_ACCOUNT, IPC mqueue and messages was left out.
> 
> I guess this was because ipv msgqueue shouldn't allow for memory
> consumption runaways. The number of message queues and messages pending
> in them is bounded and not a large amount of memory AFAIR. Anyway I do
> not see anything unreasonable about accounting the memory to the caller.

It should be accounted because receiver may not intentionally or unintentionally
consume messages.

  parent reply	other threads:[~2016-10-18 19:30 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-18 15:54 [PATCH] IPC: account for kmem usage on mqueue and msg Aristeu Rozanski
     [not found] ` <1476806075-1210-1-git-send-email-arozansk-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-10-18 18:26   ` Michal Hocko
     [not found]     ` <20161018182619.GB27792-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2016-10-18 18:44       ` Aristeu Rozanski
2016-10-18 19:30       ` Alexey Dobriyan [this message]
     [not found]         ` <CAFtQ=dr2zGqeHtw84UGP8615TaWg92_n7nZPfn2qZkxDA1zN5Q@mail.gmail.com>
     [not found]           ` <CAFtQ=dr2zGqeHtw84UGP8615TaWg92_n7nZPfn2qZkxDA1zN5Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-19  7:55             ` Michal Hocko

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