From: Peter Zijlstra <peterz@infradead.org>
To: David Herrmann <dh.herrmann@gmail.com>
Cc: Jan Kara <jack@suse.cz>, Minchan Kim <minchan@kernel.org>,
Hugh Dickins <hughd@google.com>,
Tony Battersby <tonyb@cybernetics.com>,
Al Viro <viro@zeniv.linux.org.uk>,
Michael Kerrisk <mtk.manpages@gmail.com>,
Ryan Lortie <desrt@desrt.ca>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm <linux-mm@kvack.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>, Tejun Heo <tj@kernel.org>,
Greg Kroah-Hartman <greg@kroah.com>,
John Stultz <john.stultz@linaro.org>,
Kristian Hogsberg <krh@bitplanet.net>,
Lennart Poettering <lennart@poettering.net>,
Daniel Mack <zonque@gmail.com>, Kay Sievers <kay@vrfy.org>
Subject: Re: [PATCH v2 0/3] File Sealing & memfd_create()
Date: Tue, 3 Jun 2014 10:31:11 +0200 [thread overview]
Message-ID: <20140603083111.GM11096@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <CANq1E4T-4dc=r0mpedY-CfDmxCO4YmDfUX4-DRP1y6darAuSWQ@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 560 bytes --]
On Mon, Jun 02, 2014 at 06:04:02PM +0200, David Herrmann wrote:
> Correct, the problem is not accounting for pinned-pages, but waiting
> for them to get released. Furthermore, Peter's patches make VM_PINNED
> an optional feature, so we'd still miss all the short-term GUP users.
> Sadly, that means we cannot even use it to test for pending GUP users.
Right, I'm not bothered about temporary pins, they'll go away quickly
and generally not bother reclaim and the like (much). The thing I
'worry' about is the persistent pins, which have unbounded life spans.
[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]
prev parent reply other threads:[~2014-06-03 8:31 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-15 18:38 [PATCH v2 0/3] File Sealing & memfd_create() David Herrmann
2014-04-15 18:38 ` [PATCH v2 1/3] shm: add sealing API David Herrmann
2014-05-20 2:16 ` Hugh Dickins
2014-05-23 16:37 ` David Herrmann
2014-06-02 10:30 ` Hugh Dickins
2014-04-15 18:38 ` [PATCH v2 2/3] shm: add memfd_create() syscall David Herrmann
2014-05-20 2:20 ` Hugh Dickins
2014-05-23 16:57 ` David Herrmann
2014-06-02 10:59 ` Hugh Dickins
2014-06-02 17:50 ` Andy Lutomirski
2014-06-13 10:42 ` David Herrmann
2014-05-21 10:50 ` Konstantin Khlebnikov
2014-04-15 18:38 ` [PATCH v2 3/3] selftests: add memfd_create() + sealing tests David Herrmann
2014-05-20 2:22 ` Hugh Dickins
2014-05-23 17:06 ` David Herrmann
2014-05-14 5:09 ` [PATCH v2 0/3] File Sealing & memfd_create() Hugh Dickins
2014-05-14 16:15 ` Tony Battersby
2014-05-14 22:35 ` Hugh Dickins
2014-05-19 11:44 ` David Herrmann
2014-05-19 16:09 ` Jan Kara
2014-05-19 22:11 ` Hugh Dickins
2014-05-26 11:44 ` David Herrmann
2014-05-31 4:44 ` Hugh Dickins
2014-06-02 4:42 ` Minchan Kim
2014-06-02 9:14 ` Jan Kara
2014-06-02 16:04 ` David Herrmann
2014-06-03 8:31 ` Peter Zijlstra [this message]
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=20140603083111.GM11096@twins.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=akpm@linux-foundation.org \
--cc=desrt@desrt.ca \
--cc=dh.herrmann@gmail.com \
--cc=greg@kroah.com \
--cc=hannes@cmpxchg.org \
--cc=hughd@google.com \
--cc=jack@suse.cz \
--cc=john.stultz@linaro.org \
--cc=kay@vrfy.org \
--cc=krh@bitplanet.net \
--cc=lennart@poettering.net \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=minchan@kernel.org \
--cc=mtk.manpages@gmail.com \
--cc=tj@kernel.org \
--cc=tonyb@cybernetics.com \
--cc=torvalds@linux-foundation.org \
--cc=viro@zeniv.linux.org.uk \
--cc=zonque@gmail.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).