From: Alexey Dobriyan <adobriyan@gmail.com>
To: mikpelinux@gmail.com
Cc: linux-kernel@vger.kernel.org, mhocko@kernel.org,
willy@infradead.org, ak@linux.intel.com, linux-mm@kvack.org
Subject: Re: [PATCH] mm: disable `vm.max_map_count' sysctl limit
Date: Mon, 27 Nov 2017 22:47:53 +0300 [thread overview]
Message-ID: <20171127194753.GB28115@avx2> (raw)
In-Reply-To: <20171127194603.GA28115@avx2>
[resent because I can't type]
> vm.max_map_count
I always thought it is some kind of algorithmic complexity limiter and
kernel memory limiter. VMAs are under SLAB_ACCOUNT nowadays but ->mmap
list stays:
$ chgrep -e 'for.*vma = vma->vm_next' | wc -l
41
In particular readdir on /proc/*/map_files .
I'm saying you can not simply remove this sysctl.
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WARNING: multiple messages have this Message-ID (diff)
From: Alexey Dobriyan <adobriyan@gmail.com>
To: mikpelinux@gmail.com
Cc: linux-kernel@vger.kernel.org, mhocko@kernel.org,
willy@infradead.org, ak@linux.intel.com, linux-mm@kvack.org
Subject: Re: [PATCH] mm: disable `vm.max_map_count' sysctl limit
Date: Mon, 27 Nov 2017 22:47:53 +0300 [thread overview]
Message-ID: <20171127194753.GB28115@avx2> (raw)
In-Reply-To: <20171127194603.GA28115@avx2>
[resent because I can't type]
> vm.max_map_count
I always thought it is some kind of algorithmic complexity limiter and
kernel memory limiter. VMAs are under SLAB_ACCOUNT nowadays but ->mmap
list stays:
$ chgrep -e 'for.*vma = vma->vm_next' | wc -l
41
In particular readdir on /proc/*/map_files .
I'm saying you can not simply remove this sysctl.
next prev parent reply other threads:[~2017-11-27 19:47 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-27 19:46 [PATCH] mm: disable `vm.max_map_count' sysctl limit Alexey Dobriyan
2017-11-27 19:46 ` Alexey Dobriyan
2017-11-27 19:47 ` Alexey Dobriyan [this message]
2017-11-27 19:47 ` Alexey Dobriyan
-- strict thread matches above, loose matches on Subject: below --
2017-11-26 16:09 Mikael Pettersson
2017-11-26 16:09 ` Mikael Pettersson
2017-11-26 16:09 ` Mikael Pettersson
2017-11-27 10:12 ` Michal Hocko
2017-11-27 10:12 ` Michal Hocko
2017-11-27 16:22 ` Matthew Wilcox
2017-11-27 16:22 ` Matthew Wilcox
[not found] ` <20171127162207.GA8265-PfSpb0PWhxZc2C7mugBRk2EX/6BAtgUQ@public.gmane.org>
2017-11-27 19:28 ` Mikael Pettersson
2017-11-27 19:28 ` Mikael Pettersson
2017-11-27 19:28 ` Mikael Pettersson
2017-11-27 17:25 ` Andi Kleen
2017-11-27 17:25 ` Andi Kleen
[not found] ` <87vahv8whv.fsf-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-11-27 18:32 ` Michal Hocko
2017-11-27 18:32 ` Michal Hocko
2017-11-27 18:32 ` Michal Hocko
2017-11-27 19:57 ` Michal Hocko
2017-11-27 19:57 ` Michal Hocko
[not found] ` <20171127195732.3hkfx57d3ytyccvp-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2017-11-27 20:21 ` Andi Kleen
2017-11-27 20:21 ` Andi Kleen
2017-11-27 20:21 ` Andi Kleen
2017-11-27 20:52 ` Michal Hocko
2017-11-27 20:52 ` Michal Hocko
2017-11-27 19:36 ` Mikael Pettersson
2017-11-27 19:36 ` Mikael Pettersson
[not found] ` <20171127101232.ykriowhatecnvjvg-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2017-11-27 19:18 ` Mikael Pettersson
2017-11-27 19:18 ` Mikael Pettersson
2017-11-27 19:18 ` Mikael Pettersson
[not found] ` <CAM43=SPVvBTPz31Uu=iz3fpS9tb75uSmL=pYP3AfsfmYr9u4Og-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-11-27 19:52 ` Michal Hocko
2017-11-27 19:52 ` Michal Hocko
2017-11-27 19:52 ` Michal Hocko
[not found] ` <20171127195207.vderbbkbgygawuhx-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2017-11-27 23:26 ` John Hubbard
2017-11-27 23:26 ` John Hubbard
2017-11-27 23:26 ` John Hubbard
2017-11-27 23:26 ` John Hubbard
2017-11-28 8:12 ` Michal Hocko
2017-11-28 8:12 ` Michal Hocko
2017-11-29 5:14 ` John Hubbard
2017-11-29 5:14 ` John Hubbard
2017-11-29 5:14 ` John Hubbard
[not found] ` <5ca7d54b-5ae4-646d-f3a0-9b85129c9ccf-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2017-11-29 8:32 ` Michal Hocko
2017-11-29 8:32 ` Michal Hocko
2017-11-29 8:32 ` Michal Hocko
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