From: Stanislaw Gruszka <sgruszka@redhat.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: David Rientjes <rientjes@google.com>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
akpm@linux-foundation.org, linux-mm@kvack.org,
hannes@cmpxchg.org
Subject: Re: [PATCH] mm,page_alloc: Split stall warning and failure warning.
Date: Wed, 19 Apr 2017 15:22:16 +0200 [thread overview]
Message-ID: <20170419132212.GA3514@redhat.com> (raw)
In-Reply-To: <20170419111342.GF29789@dhcp22.suse.cz>
On Wed, Apr 19, 2017 at 01:13:43PM +0200, Michal Hocko wrote:
> On Tue 18-04-17 14:47:32, David Rientjes wrote:
> [...]
> > I think the debug_guardpage_minorder() check makes sense for failed
> > allocations because we are essentially removing memory from the system for
> > debug, failed allocations as a result of low on memory or fragmentation
> > aren't concerning if we are removing memory from the system.
>
> I really fail to see how this is any different from booting with
> mem=$SIZE to reduce the amount of available memory.
mem= shrink upper memory limit, debug_guardpage_minorder= fragments
available physical memory (deliberately to catch unintended access).
Stanislaw
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next prev parent reply other threads:[~2017-04-19 13:22 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-10 11:58 [PATCH] mm,page_alloc: Split stall warning and failure warning Tetsuo Handa
2017-04-10 12:39 ` Michal Hocko
2017-04-10 14:23 ` Tetsuo Handa
2017-04-10 22:03 ` Andrew Morton
2017-04-11 7:15 ` Michal Hocko
2017-04-11 11:43 ` Tetsuo Handa
2017-04-11 11:54 ` Michal Hocko
2017-04-11 13:26 ` Tetsuo Handa
2017-04-17 22:48 ` David Rientjes
2017-04-18 11:49 ` Tetsuo Handa
2017-04-18 12:14 ` Michal Hocko
2017-04-18 21:47 ` David Rientjes
2017-04-19 11:13 ` Michal Hocko
2017-04-19 13:22 ` Stanislaw Gruszka [this message]
2017-04-19 13:33 ` Michal Hocko
2017-04-22 8:10 ` Stanislaw Gruszka
2017-04-24 8:42 ` Michal Hocko
2017-04-24 13:06 ` Stanislaw Gruszka
2017-04-24 15:06 ` Tetsuo Handa
2017-04-25 6:36 ` Stanislaw Gruszka
2017-04-19 22:34 ` David Rientjes
2017-04-20 11:46 ` Tetsuo Handa
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