From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>,
Ingo Molnar <mingo@elte.hu>, Nick Piggin <npiggin@novell.com>,
Hugh Dickins <hugh@veritas.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
linux-mm@kvack.org
Subject: Re: [aarcange@redhat.com: [PATCH] fork vs gup(-fast) fix]
Date: Sat, 14 Mar 2009 16:07:21 +1100 [thread overview]
Message-ID: <1237007241.25062.92.camel@pasglop> (raw)
In-Reply-To: <alpine.LFD.2.00.0903111328180.32478@localhost.localdomain>
On Wed, 2009-03-11 at 13:33 -0700, Linus Torvalds wrote:
> - Just make the rule be that people who use get_user_pages() always
> have to have the read-lock on mmap_sem until they've used the
> pages.
>
That's not going to work with IB and friends who gup() whole bunches of
user memory forever...
Ben.
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next prev parent reply other threads:[~2009-03-14 5:07 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20090311170611.GA2079@elte.hu>
2009-03-11 17:33 ` [aarcange@redhat.com: [PATCH] fork vs gup(-fast) fix] Linus Torvalds
2009-03-11 17:41 ` Ingo Molnar
2009-03-11 17:58 ` Linus Torvalds
2009-03-11 18:37 ` Andrea Arcangeli
2009-03-11 18:46 ` Linus Torvalds
2009-03-11 19:01 ` Linus Torvalds
2009-03-11 19:59 ` Andrea Arcangeli
2009-03-11 20:19 ` Linus Torvalds
2009-03-11 20:33 ` Linus Torvalds
2009-03-11 20:55 ` Andrea Arcangeli
2009-03-11 21:28 ` Linus Torvalds
2009-03-11 21:57 ` Andrea Arcangeli
2009-03-11 22:06 ` Linus Torvalds
2009-03-11 22:07 ` Linus Torvalds
2009-03-11 22:22 ` Davide Libenzi
2009-03-11 22:32 ` Linus Torvalds
2009-03-14 5:07 ` Benjamin Herrenschmidt [this message]
2009-03-11 20:48 ` Andrea Arcangeli
2009-03-14 5:06 ` Benjamin Herrenschmidt
2009-03-14 5:20 ` Nick Piggin
2009-03-16 16:01 ` KOSAKI Motohiro
2009-03-16 16:23 ` Nick Piggin
2009-03-16 16:32 ` Linus Torvalds
2009-03-16 16:50 ` Nick Piggin
2009-03-16 17:02 ` Linus Torvalds
2009-03-16 17:19 ` Nick Piggin
2009-03-16 17:42 ` Linus Torvalds
2009-03-16 18:02 ` Nick Piggin
2009-03-16 18:05 ` Nick Piggin
2009-03-16 18:17 ` Linus Torvalds
2009-03-16 18:33 ` Nick Piggin
2009-03-16 19:22 ` Linus Torvalds
2009-03-17 5:44 ` Nick Piggin
2009-03-16 18:14 ` Linus Torvalds
2009-03-16 18:29 ` Nick Piggin
2009-03-16 19:17 ` Linus Torvalds
2009-03-17 5:42 ` Nick Piggin
2009-03-17 5:58 ` Nick Piggin
2009-03-16 18:37 ` Andrea Arcangeli
2009-03-16 18:28 ` Andrea Arcangeli
2009-03-16 23:59 ` KAMEZAWA Hiroyuki
2009-03-18 2:04 ` KOSAKI Motohiro
2009-03-22 12:23 ` KOSAKI Motohiro
2009-03-23 0:13 ` KOSAKI Motohiro
2009-03-23 16:29 ` Ingo Molnar
2009-03-23 16:46 ` Linus Torvalds
2009-03-24 5:08 ` KOSAKI Motohiro
2009-03-24 13:43 ` Nick Piggin
2009-03-24 17:56 ` Linus Torvalds
2009-03-30 10:52 ` KOSAKI Motohiro
[not found] ` <200904022307.12043.nickpiggin@yahoo.com.au>
2009-04-03 3:49 ` Nick Piggin
2009-03-17 0:44 ` Linus Torvalds
2009-03-17 0:56 ` KAMEZAWA Hiroyuki
2009-03-17 12:19 ` Andrea Arcangeli
2009-03-17 16:43 ` Linus Torvalds
2009-03-17 17:01 ` Linus Torvalds
2009-03-17 17:10 ` Andrea Arcangeli
2009-03-17 17:43 ` Linus Torvalds
2009-03-17 18:09 ` Linus Torvalds
2009-03-17 18:19 ` Linus Torvalds
2009-03-17 18:46 ` Andrea Arcangeli
2009-03-17 19:03 ` Linus Torvalds
2009-03-17 19:35 ` Andrea Arcangeli
2009-03-17 19:55 ` Linus Torvalds
2009-03-11 19:06 ` Andrea Arcangeli
2009-03-12 5:36 ` Nick Piggin
2009-03-12 16:23 ` Nick Piggin
2009-03-12 17:00 ` Andrea Arcangeli
2009-03-12 17:20 ` Nick Piggin
2009-03-12 17:23 ` Nick Piggin
2009-03-12 18:06 ` Andrea Arcangeli
2009-03-12 18:58 ` Andrea Arcangeli
2009-03-13 16:09 ` Nick Piggin
2009-03-13 19:34 ` Andrea Arcangeli
2009-03-14 4:59 ` Nick Piggin
2009-03-16 13:56 ` Andrea Arcangeli
2009-03-16 16:01 ` Nick Piggin
2009-03-14 4:46 ` Nick Piggin
2009-03-14 5:06 ` Nick Piggin
2009-03-11 18:53 ` Andrea Arcangeli
2009-03-11 18:22 ` Andrea Arcangeli
2009-03-11 19:06 ` Ingo Molnar
2009-03-11 19:15 ` Andrea Arcangeli
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