From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, Hugh Dickins <hughd@google.com>,
William Kucharski <william.kucharski@oracle.com>
Subject: Re: [PATCH v2] page cache: Store only head pages in i_pages
Date: Fri, 15 Feb 2019 01:08:10 +0300 [thread overview]
Message-ID: <20190214220810.cs2ecomtrqc6m2ap@kshutemo-mobl1> (raw)
In-Reply-To: <20190214211757.GE12668@bombadil.infradead.org>
On Thu, Feb 14, 2019 at 01:17:57PM -0800, Matthew Wilcox wrote:
> On Thu, Feb 14, 2019 at 04:30:04PM +0300, Kirill A. Shutemov wrote:
> > - migrate_page_move_mapping() has to be converted too.
>
> I think that's as simple as:
>
> +++ b/mm/migrate.c
> @@ -465,7 +465,7 @@ int migrate_page_move_mapping(struct address_space *mapping,
>
> for (i = 1; i < HPAGE_PMD_NR; i++) {
> xas_next(&xas);
> - xas_store(&xas, newpage + i);
> + xas_store(&xas, newpage);
> }
> }
>
>
> or do you see something else I missed?
Looks right to me.
BTW, maybe some add syntax sugar from XArray side?
Replace the loop and xas_store() before it with:
xas_fill(&xas, newpage, 1UL << compound_order(newpage));
or something similar?
--
Kirill A. Shutemov
next prev parent reply other threads:[~2019-02-14 22:08 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-12 18:34 [PATCH v2] page cache: Store only head pages in i_pages Matthew Wilcox
2019-02-13 14:41 ` Jan Kara
2019-02-13 20:17 ` Matthew Wilcox
2019-02-14 16:27 ` Jan Kara
2019-02-14 13:30 ` Kirill A. Shutemov
2019-02-14 20:53 ` Matthew Wilcox
2019-02-14 22:03 ` Kirill A. Shutemov
2019-02-14 22:25 ` Matthew Wilcox
2019-02-14 21:17 ` Matthew Wilcox
2019-02-14 22:08 ` Kirill A. Shutemov [this message]
2019-02-14 22:11 ` Matthew Wilcox
2019-02-14 22:29 ` Kirill A. Shutemov
2019-02-14 22:29 ` Kirill A. Shutemov
2019-02-15 20:28 ` Matthew Wilcox
2019-02-14 22:41 ` Kirill A. Shutemov
2019-02-15 20:20 ` Matthew Wilcox
2019-02-15 21:17 ` Kirill A. Shutemov
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=20190214220810.cs2ecomtrqc6m2ap@kshutemo-mobl1 \
--to=kirill@shutemov.name \
--cc=hughd@google.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=william.kucharski@oracle.com \
--cc=willy@infradead.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;
as well as URLs for NNTP newsgroup(s).