From: "H. Peter Anvin" <hpa@zytor.com>
To: Kay Sievers <kay@vrfy.org>, John Stultz <john.stultz@linaro.org>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
Greg KH <gregkh@linuxfoundation.org>,
Android Kernel Team <kernel-team@android.com>,
Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>, Hugh Dickins <hughd@google.com>,
Dave Hansen <dave.hansen@intel.com>,
Rik van Riel <riel@redhat.com>,
Michel Lespinasse <walken@google.com>,
Johannes Weiner <hannes@cmpxchg.org>, Neil Brown <neilb@suse.de>,
Andrea Arcangeli <aarcange@redhat.com>,
Takahiro Akashi <takahiro.akashi@linaro.org>,
Minchan Kim <minchan@kernel.org>,
Lennart Poettering <mzxreary@0pointer.de>
Subject: Re: [RFC] shmgetfd idea
Date: Tue, 28 Jan 2014 15:02:49 -0800 [thread overview]
Message-ID: <52E83719.9060709@zytor.com> (raw)
In-Reply-To: <CAPXgP13G14B3YFpaE+m_AtFfFR6NRVSi1JYAvLZSsfftSkgwBQ@mail.gmail.com>
On 01/28/2014 02:14 PM, Kay Sievers wrote:
>>
>> But yes, alternatively classic systems may be able to get around the
>> issues via tmpfs quotas and convincing applications to use O_TMPFILE
>> there. But to me this seems less ideal then the Android approach, where
>> the lifecycle of the tmpfs fds more limited and clear.
>
> Tmpfs supports no quota, it's all a huge hole and unsafe in that
> regard on every system today. But ashmem and kdbus, as they are today,
> are not better.
>
We can fix that aspect in tmpfs. Creating new file objcts outside of
filesystems really doesn't make things any better, since our toolbox
around this stuff largely revolves around filesystems.
-hpa
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2014-01-28 23:03 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-28 1:37 [RFC] shmgetfd idea John Stultz
2014-01-28 1:53 ` Kay Sievers
2014-01-28 19:47 ` John Stultz
2014-01-28 3:52 ` H. Peter Anvin
2014-01-28 19:56 ` John Stultz
2014-01-28 20:37 ` H. Peter Anvin
2014-01-28 20:58 ` John Stultz
2014-01-28 21:01 ` Kay Sievers
2014-01-28 21:05 ` John Stultz
2014-01-28 21:10 ` H. Peter Anvin
2014-01-28 21:54 ` John Stultz
2014-01-28 22:14 ` Kay Sievers
2014-01-28 23:02 ` H. Peter Anvin [this message]
2014-01-28 23:14 ` Kay Sievers
2014-01-28 23:19 ` H. Peter Anvin
2014-01-29 0:14 ` Kay Sievers
2014-01-29 0:20 ` H. Peter Anvin
2014-01-29 0:49 ` Kay Sievers
2014-01-28 23:14 ` John Stultz
2014-01-28 21:28 ` Kay Sievers
2014-01-30 8:46 ` Christoph Hellwig
2014-01-30 16:02 ` Kay Sievers
2014-01-30 21:42 ` John Stultz
2014-01-31 0:01 ` Kay Sievers
2014-02-03 15:03 ` Christoph Hellwig
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=52E83719.9060709@zytor.com \
--to=hpa@zytor.com \
--cc=aarcange@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=dave.hansen@intel.com \
--cc=gregkh@linuxfoundation.org \
--cc=hannes@cmpxchg.org \
--cc=hughd@google.com \
--cc=john.stultz@linaro.org \
--cc=kay@vrfy.org \
--cc=kernel-team@android.com \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=minchan@kernel.org \
--cc=mzxreary@0pointer.de \
--cc=neilb@suse.de \
--cc=riel@redhat.com \
--cc=takahiro.akashi@linaro.org \
--cc=walken@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.