From: Paul Mundt <lethal@linux-sh.org>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] Sanely size hash tables when using large base pages.
Date: Thu, 28 Dec 2006 09:29:34 +0900 [thread overview]
Message-ID: <20061228002934.GA18755@linux-sh.org> (raw)
In-Reply-To: <20061226074257.GA5853@mail.ustc.edu.cn>
On Tue, Dec 26, 2006 at 03:42:57PM +0800, Fengguang Wu wrote:
> On Tue, Dec 26, 2006 at 03:16:52PM +0900, Paul Mundt wrote:
> > pidhash_shift = max(4, fls(megabytes * 4));
> > pidhash_shift = min(12, pidhash_shift);
> > pidhash_size = 1 << pidhash_shift;
> >
> > + size = pidhash_size * sizeof(struct hlist_head);
> > + if (unlikely(size < PAGE_SIZE)) {
> > + size = PAGE_SIZE;
> > + pidhash_size = size / sizeof(struct hlist_head);
> > + pidhash_shift = 0;
>
> But pidhash_shift is not the order of page ;-)
>
Ah, you're right. I'll drop the pidhash changes and resubmit. Thanks.
--
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:"dont@kvack.org"> email@kvack.org </a>
prev parent reply other threads:[~2006-12-28 0:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-26 6:16 Paul Mundt
[not found] ` <20061226074257.GA5853@mail.ustc.edu.cn>
2006-12-26 7:42 ` Fengguang Wu
2006-12-28 0:29 ` Paul Mundt [this message]
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=20061228002934.GA18755@linux-sh.org \
--to=lethal@linux-sh.org \
--cc=linux-kernel@vger.kernel.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