From: Benjamin LaHaise <bcrl@redhat.com>
To: Andrea Arcangeli <andrea@suse.de>
Cc: David Howells <dhowells@redhat.com>,
Linus Torvalds <torvalds@transmeta.com>,
Manfred Spraul <manfred@colorfullife.com>,
Ulrich.Weigand@de.ibm.com, linux-kernel@vger.kernel.org
Subject: Re: Deadlock on the mm->mmap_sem
Date: Wed, 19 Sep 2001 17:14:04 -0400 [thread overview]
Message-ID: <20010919171404.A5932@redhat.com> (raw)
In-Reply-To: <torvalds@transmeta.com> <5079.1000911203@warthog.cambridge.redhat.com> <20010919200357.Z720@athlon.random> <20010919141656.A5021@redhat.com> <20010919204546.K720@athlon.random>
In-Reply-To: <20010919204546.K720@athlon.random>; from andrea@suse.de on Wed, Sep 19, 2001 at 08:45:46PM +0200
On Wed, Sep 19, 2001 at 08:45:46PM +0200, Andrea Arcangeli wrote:
> To be pedantic the only idea I shared with the old code (but that's just
> the idea, not the implementation, so AFIK only a patent on such idea
> could protect it from its free usage usage) is to return the rwsem again
> from rwsem_wake and friends to avoid saving it in the asm slow path, and
> I written that:
Your patch moved a bunch of code into asm-i386/rwsem_xchgadd.h. That
code was derived from the spinlock code by me into the first rwsems,
then David reworked bits of it, as wel as you. But there is no
copyright on that file indicating this heritage. If you look at
how strict commercial copyright control can be, even copying a
single line of code mentally by retyping it can still mandate the
copyright legacy. I'm sure it's just an oversight, but it's
probably one we *all* need to be reminded of every now and again.
-ben
next prev parent reply other threads:[~2001-09-19 21:14 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-17 21:50 Deadlock on the mm->mmap_sem Manfred Spraul
2001-09-17 23:39 ` Linus Torvalds
[not found] ` <200109172339.f8HNd5W13244@penguin.transmeta.com>
2001-09-18 0:01 ` Andrea Arcangeli
2001-09-18 7:31 ` Manfred Spraul
2001-09-18 7:55 ` Andrea Arcangeli
2001-09-18 8:18 ` David Howells
2001-09-18 9:32 ` David Howells
2001-09-18 9:37 ` Manfred Spraul
2001-09-18 9:49 ` Arjan van de Ven
2001-09-18 12:53 ` Manfred Spraul
2001-09-18 14:13 ` David Howells
2001-09-18 14:49 ` Alan Cox
2001-09-18 15:26 ` David Howells
2001-09-18 15:46 ` Alan Cox
2001-09-18 15:11 ` David Howells
2001-09-18 16:49 ` Linus Torvalds
2001-09-19 9:51 ` David Howells
2001-09-19 12:49 ` Andrea Arcangeli
2001-09-19 14:08 ` Manfred Spraul
2001-09-19 14:51 ` David Howells
2001-09-19 15:18 ` Manfred Spraul
2001-09-19 14:53 ` David Howells
2001-09-19 18:03 ` Andrea Arcangeli
2001-09-19 18:16 ` Benjamin LaHaise
2001-09-19 18:27 ` David Howells
2001-09-19 18:48 ` Andrea Arcangeli
2001-09-19 18:45 ` Andrea Arcangeli
2001-09-19 21:14 ` Benjamin LaHaise [this message]
2001-09-19 22:07 ` Andrea Arcangeli
2001-09-19 18:19 ` Manfred Spraul
2001-09-20 2:07 ` Andrea Arcangeli
2001-09-20 4:37 ` Andrea Arcangeli
2001-09-20 7:05 ` David Howells
2001-09-20 7:19 ` Andrea Arcangeli
2001-09-20 8:01 ` David Howells
2001-09-20 8:09 ` Andrea Arcangeli
2001-09-19 18:26 ` David Howells
2001-09-19 18:47 ` Andrea Arcangeli
2001-09-19 23:25 ` David Howells
2001-09-19 23:34 ` Andrea Arcangeli
2001-09-19 23:46 ` Andrea Arcangeli
2001-09-19 23:24 ` [PATCH] attempt #2 (Re: Deadlock on the mm->mmap_sem) David Howells
2001-09-19 14:58 ` Deadlock on the mm->mmap_sem David Howells
[not found] <masp0008@stud.uni-sb.de>
2001-09-20 10:57 ` Studierende der Universitaet des Saarlandes
2001-09-20 12:40 ` David Howells
2001-09-20 18:24 ` Andrea Arcangeli
2001-09-20 21:43 ` Manfred Spraul
2001-09-22 21:06 ` Manfred Spraul
-- strict thread matches above, loose matches on Subject: below --
2001-09-18 13:22 Ulrich Weigand
2001-09-17 20:57 Ulrich Weigand
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