From: Andrea Arcangeli <andrea@suse.de>
To: Ben LaHaise <bcrl@redhat.com>
Cc: torvalds@transmeta.com, alan@redhat.com, linux-mm@kvack.org,
Chris Blizzard <blizzard@redhat.com>
Subject: Re: resend Re: [PATCH] final merging patch -- significant mozilla speedup.
Date: Sun, 19 Aug 2001 03:02:38 +0200 [thread overview]
Message-ID: <20010819030238.U1719@athlon.random> (raw)
In-Reply-To: <20010819025314.R1719@athlon.random>; from andrea@suse.de on Sun, Aug 19, 2001 at 02:53:14AM +0200
On Sun, Aug 19, 2001 at 02:53:14AM +0200, Andrea Arcangeli wrote:
> I don't think it's a bug so I don't feel the need to change it. The
> expand_stack can only run with the semaphore acquired at worse in read
> mode so it cannot race.
Actually the locking is a bit subtle so I think it needs a further
explanation, everybody but expand_stack is playing with the vm_pgoff
with the write semaphore acquired.
The only ones playing with vm_pgoff with only the read semaphore
acquired is expand_stack and it serialize against itself with the
spinlock.
Andrea
--
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/
next prev parent reply other threads:[~2001-08-19 1:02 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-16 21:02 [PATCH] final merging patch -- significant mozilla speedup Ben LaHaise
2001-08-18 18:22 ` resend " Ben LaHaise
2001-08-18 23:27 ` Andrea Arcangeli
2001-08-19 0:10 ` Ben LaHaise
2001-08-19 0:35 ` Andrea Arcangeli
2001-08-19 0:50 ` Rik van Riel
2001-08-19 0:55 ` Andrea Arcangeli
2001-08-19 1:17 ` Andrea Arcangeli
2001-08-19 0:53 ` Andrea Arcangeli
2001-08-19 1:02 ` Andrea Arcangeli [this message]
2001-08-19 1:25 ` Andrea Arcangeli
2001-08-19 1:40 ` Andrea Arcangeli
2001-08-19 2:59 ` Andrea Arcangeli
2001-08-19 3:53 ` Andrea Arcangeli
2001-08-19 3:53 ` Andrea Arcangeli
2001-08-19 5:11 ` Andrea Arcangeli
2001-08-19 5:11 ` Andrea Arcangeli
2001-08-19 0:54 ` Rik van Riel
2001-08-19 1:00 ` Andrea Arcangeli
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=20010819030238.U1719@athlon.random \
--to=andrea@suse.de \
--cc=alan@redhat.com \
--cc=bcrl@redhat.com \
--cc=blizzard@redhat.com \
--cc=linux-mm@kvack.org \
--cc=torvalds@transmeta.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.