From: "Manfred Spraul" <manfred@colorfullife.com>
To: "Rik van Riel" <riel@conectiva.com.br>
Cc: <linux-kernel@vger.kernel.org>, <torvalds@transmeta.com>
Subject: Re: 3rd version of R/W mmap_sem patch available
Date: Tue, 20 Mar 2001 00:13:14 +0100 [thread overview]
Message-ID: <001201c0b0ca$30eb1910$5517fea9@local> (raw)
>
> Besides, the fair semaphores would potentially slow things down, while
> this potentially speeds things up. So.. It looks obvious enough.
>
Rik, did you check that {pte,pmd}_alloc are thread safe? At least in
2.4.2 they aren't (include/asm-i386/pgalloc.h), and your patch doesn't
touch pgalloc.
{pte,pmd}_alloc are called from handle_mm_fault, and that function is
now running with down_read().
--
Manfred
next reply other threads:[~2001-03-19 23:14 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-19 23:13 Manfred Spraul [this message]
2001-03-19 23:27 ` 3rd version of R/W mmap_sem patch available Linus Torvalds
2001-03-19 23:35 ` Linus Torvalds
2001-03-20 4:37 ` Rik van Riel
2001-03-20 4:35 ` Rik van Riel
2001-03-20 4:41 ` Linus Torvalds
[not found] <Pine.LNX.4.33.0103191802330.2076-100000@mikeg.weiden.de>
2001-03-20 1:56 ` Rik van Riel
2001-03-20 1:56 ` Rik van Riel
2001-03-19 22:46 ` Linus Torvalds
2001-03-19 22:46 ` Linus Torvalds
2001-03-20 2:46 ` Linus Torvalds
2001-03-20 2:46 ` Linus Torvalds
2001-03-20 4:15 ` Marcelo Tosatti
2001-03-20 4:15 ` Marcelo Tosatti
2001-03-20 6:07 ` Linus Torvalds
2001-03-20 6:07 ` Linus Torvalds
2001-03-20 4:29 ` Marcelo Tosatti
2001-03-20 4:29 ` Marcelo Tosatti
2001-03-20 6:36 ` Linus Torvalds
2001-03-20 6:36 ` Linus Torvalds
2001-03-20 7:03 ` Linus Torvalds
2001-03-20 8:19 ` Eric W. Biederman
2001-03-20 15:11 ` Andrew Morton
2001-03-20 15:15 ` Jeff Garzik
2001-03-20 15:16 ` Jeff Garzik
2001-03-20 15:31 ` Andrew Morton
2001-03-21 1:59 ` Eric W. Biederman
2001-03-20 16:08 ` Linus Torvalds
2001-03-20 16:33 ` Andi Kleen
2001-03-20 17:13 ` Linus Torvalds
2001-03-20 19:33 ` Rik van Riel
2001-03-20 22:51 ` Andrew Morton
2001-03-22 10:24 ` Andrew Morton
[not found] <3AB6C7C2.D1A49FEF@uow.edu.au>
2001-03-20 3:35 ` Linus Torvalds
2001-03-20 12:38 ` Stephen C. Tweedie
2001-03-20 14:02 ` H. Peter Anvin
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