From: "Stephen C. Tweedie" <sct@redhat.com>
To: Daniel Phillips <phillips@bonn-fries.net>
Cc: Linus Torvalds <torvalds@transmeta.com>,
Hugh Dickins <hugh@veritas.com>,
Marcelo Tosatti <marcelo@conectiva.com.br>,
linux-mm@kvack.org
Subject: Re: 0-order allocation problem
Date: Thu, 16 Aug 2001 11:26:31 +0100 [thread overview]
Message-ID: <20010816112631.N398@redhat.com> (raw)
In-Reply-To: <20010816082419Z16176-1232+379@humbolt.nl.linux.org>; from phillips@bonn-fries.net on Thu, Aug 16, 2001 at 10:30:35AM +0200
Hi,
On Thu, Aug 16, 2001 at 10:30:35AM +0200, Daniel Phillips wrote:
> because the use count is overloaded. So how about adding a PG_pinned
> flag, and users need to set it for any page they intend to pin.
It needs to be a count, not a flag (consider multiple mlock() calls
from different processes, or multiple direct IO writeouts from the
same memory to disk.)
But yes, being able to distinguish freeable from unfreeable references
to a page would be very useful, especially if we want to support very
large memory allocations dynamically for things like i86 PSE 2MB/4MB
page tables.
Cheers,
Stephen
--
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:[~2001-08-16 10:26 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.21.0108152049100.973-100000@localhost.localdomain>
2001-08-15 20:45 ` Linus Torvalds
2001-08-15 20:55 ` Marcelo Tosatti
2001-08-15 22:30 ` Linus Torvalds
2001-08-15 22:34 ` Rik van Riel
2001-08-15 23:27 ` Hugh Dickins
2001-08-15 22:15 ` Marcelo Tosatti
2001-08-15 22:00 ` Rik van Riel
2001-08-15 22:15 ` Rik van Riel
2001-08-15 23:09 ` Hugh Dickins
2001-08-15 21:54 ` Marcelo Tosatti
2001-08-15 23:38 ` Rik van Riel
2001-08-16 0:07 ` Hugh Dickins
2001-08-15 22:44 ` Marcelo Tosatti
2001-08-16 0:50 ` Linus Torvalds
2001-08-16 8:30 ` Daniel Phillips
2001-08-16 10:26 ` Stephen C. Tweedie [this message]
2001-08-16 12:18 ` Daniel Phillips
2001-08-16 15:35 ` Eric W. Biederman
2001-08-16 16:37 ` Stephen C. Tweedie
2001-08-17 3:20 ` Eric W. Biederman
2001-08-17 11:45 ` Stephen C. Tweedie
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=20010816112631.N398@redhat.com \
--to=sct@redhat.com \
--cc=hugh@veritas.com \
--cc=linux-mm@kvack.org \
--cc=marcelo@conectiva.com.br \
--cc=phillips@bonn-fries.net \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox