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 ` 0-order allocation problem 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 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.