From: Pavel Emelyanov <xemul@parallels.com>
To: Rik van Riel <riel@redhat.com>
Cc: Linux MM <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hughd@google.com>
Subject: Re: [PATCH] proc: Report PageAnon in last left bit of /proc/pid/pagemap
Date: Sat, 21 Apr 2012 00:36:58 +0400 [thread overview]
Message-ID: <4F91C8EA.9060708@parallels.com> (raw)
In-Reply-To: <4F91C7E7.8060300@redhat.com>
On 04/21/2012 12:32 AM, Rik van Riel wrote:
> On 04/20/2012 03:44 PM, Pavel Emelyanov wrote:
>
>> Andrew noticed, that the proc pagemap file solved 2 of 3 above issues -- it
>> reports whether a page is present or swapped and it doesn't report not
>> mapped page cache pages. But, it doesn't distinguish cow-ed file pages from
>> not cow-ed.
>>
>> I would like to make the last unused bit in this file to report whether the
>> page mapped into respective pte is PageAnon or not.
>>
>> Signed-off-by: Pavel Emelyanov<xemul@openvz.org>
>
> Looks reasonable to me. I see you also report "special" pages
> as file pages, but since those cannot be migrated anyway that
> should be ok.
Yes, and all the anon-shared pages happen to be PM_FILE too :) But they can be
filtered with vma flags/prot, so I hoped it's OK to do it that way for simplicity.
> Acked-by: Rik van Riel <riel@redhat.com>
>
Thanks,
Pavel
--
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/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2012-04-20 20:37 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-20 19:44 [PATCH] proc: Report PageAnon in last left bit of /proc/pid/pagemap Pavel Emelyanov
2012-04-20 20:32 ` Rik van Riel
2012-04-20 20:36 ` Pavel Emelyanov [this message]
2012-04-27 12:39 ` [PATCH 1/2] proc: report file/anon bit in /proc/pid/pagemap Konstantin Khlebnikov
2012-04-27 12:39 ` Konstantin Khlebnikov
2012-04-27 13:37 ` Pavel Emelyanov
2012-04-27 13:37 ` Pavel Emelyanov
2012-04-27 23:40 ` Andrew Morton
2012-04-27 23:40 ` Andrew Morton
2012-04-28 13:32 ` KOSAKI Motohiro
2012-04-28 13:32 ` KOSAKI Motohiro
2012-04-29 8:28 ` Konstantin Khlebnikov
2012-04-29 8:28 ` Konstantin Khlebnikov
2012-04-27 12:39 ` [PATCH 2/2] proc: report page->index instead of pfn for non-linear mappings " Konstantin Khlebnikov
2012-04-27 12:39 ` Konstantin Khlebnikov
2012-04-27 13:37 ` Pavel Emelyanov
2012-04-27 13:37 ` Pavel Emelyanov
2012-04-30 10:48 ` [PATCH v3] proc: report file/anon bit " Konstantin Khlebnikov
2012-04-30 10:48 ` Konstantin Khlebnikov
2012-04-30 20:32 ` KOSAKI Motohiro
2012-04-30 20:32 ` KOSAKI Motohiro
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=4F91C8EA.9060708@parallels.com \
--to=xemul@parallels.com \
--cc=akpm@linux-foundation.org \
--cc=hughd@google.com \
--cc=linux-mm@kvack.org \
--cc=riel@redhat.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.