From: Linus Torvalds <torvalds@linux-foundation.org>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Armin Rigo <arigo@tunes.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCHv2 0/2] remap_file_pages() decommission
Date: Fri, 9 May 2014 08:14:08 -0700 [thread overview]
Message-ID: <CA+55aFz9Yo7OC03tKt2wsdd8cDi00yxvMwszrsOsx0ZVEh6zqQ@mail.gmail.com> (raw)
In-Reply-To: <20140509140536.F06BFE009B@blue.fi.intel.com>
On Fri, May 9, 2014 at 7:05 AM, Kirill A. Shutemov
<kirill.shutemov@linux.intel.com> wrote:
>
> Hm. I'm confused here. Do we have any limit forced per-user?
Sure we do. See "struct user_struct". We limit max number of
processes, open files, signals etc.
> I only see things like rlimits which are copied from parrent.
> Is it what you want?
No, rlimits are per process (although in some cases what they limit
are counted per user despite the _limits_ of those resources then
being settable per thread).
So I was just thinking that if we raise the per-mm default limits,
maybe we should add a global per-user limit to make it harder for a
user to use tons and toms of vma's.
Linus
next prev parent reply other threads:[~2014-05-09 15:14 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-08 12:41 [PATCHv2 0/2] remap_file_pages() decommission Kirill A. Shutemov
2014-05-08 12:41 ` [PATCH 1/2] mm: mark remap_file_pages() syscall as deprecated Kirill A. Shutemov
2014-06-12 5:48 ` Michael Kerrisk
2014-06-12 9:40 ` Kirill A. Shutemov
2014-06-12 9:44 ` Michael Kerrisk (man-pages)
2014-05-08 12:41 ` [PATCH 2/2] mm: replace remap_file_pages() syscall with emulation Kirill A. Shutemov
2014-05-08 21:57 ` Andrew Morton
2014-05-12 15:11 ` Sasha Levin
2014-05-12 17:05 ` Kirill A. Shutemov
2014-05-14 20:52 ` Sasha Levin
2014-05-14 21:17 ` Kirill A. Shutemov
2014-05-14 21:40 ` Andrew Morton
2014-05-13 7:32 ` Armin Rigo
2014-05-13 12:57 ` Sasha Levin
2014-05-08 15:35 ` [PATCHv2 0/2] remap_file_pages() decommission Linus Torvalds
2014-05-08 15:44 ` Armin Rigo
2014-05-08 16:02 ` Kirill A. Shutemov
2014-05-08 16:08 ` Linus Torvalds
2014-05-09 14:05 ` Kirill A. Shutemov
2014-05-09 15:14 ` Linus Torvalds [this message]
2014-05-09 18:19 ` Kirill A. Shutemov
2014-05-12 12:43 ` Kirill A. Shutemov
2014-05-12 14:59 ` Konstantin Khlebnikov
2014-05-12 3:36 ` Andi Kleen
2014-05-12 5:16 ` Konstantin Khlebnikov
2014-05-12 7:50 ` Armin Rigo
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