From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-mm mailing list <linux-mm@kvack.org>,
Guillaume Morin <guillaume@morinfr.org>
Subject: [PATCH] Clear dirty bits etc on compound frees
Date: Wed, 26 Nov 2003 12:13:45 -0800 [thread overview]
Message-ID: <22420000.1069877625@[10.10.2.4]> (raw)
Guillaume noticed this on s390 whilst writing a driver that used
compound pages. Seems correct to me, I've tested it on i386 as
well. The patch just makes us call free_pages_check for each element
of a compound page.
diff -purN -X /home/mbligh/.diff.exclude virgin/mm/page_alloc.c clear_dirty/mm/page_alloc.c
--- virgin/mm/page_alloc.c 2003-10-14 15:50:36.000000000 -0700
+++ clear_dirty/mm/page_alloc.c 2003-11-26 10:36:04.000000000 -0800
@@ -267,8 +267,11 @@ free_pages_bulk(struct zone *zone, int c
void __free_pages_ok(struct page *page, unsigned int order)
{
LIST_HEAD(list);
+ int i;
mod_page_state(pgfree, 1 << order);
+ for (i = 0 ; i < (1 << order) ; ++i)
+ free_pages_check(__FUNCTION__, page + i);
free_pages_check(__FUNCTION__, page);
list_add(&page->list, &list);
kernel_map_pages(page, 1<<order, 0);
--
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/ .
Don't email: <a href=mailto:"aart@kvack.org"> aart@kvack.org </a>
next reply other threads:[~2003-11-26 20:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-26 20:13 Martin J. Bligh [this message]
2003-11-26 20:20 ` Andrew Morton
2003-12-01 3:02 ` Guillaume Morin
2003-12-01 19:40 ` Martin J. Bligh
2003-12-02 9:55 ` Arjan van de Ven
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='22420000.1069877625@[10.10.2.4]' \
--to=mbligh@aracnet.com \
--cc=akpm@osdl.org \
--cc=guillaume@morinfr.org \
--cc=linux-mm@kvack.org \
/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