From: gaoqiang <834555262@qq.com>
To: linux-kernel@vger.kernel.org
Subject: dear list
Date: Thu, 02 Sep 2010 14:51:48 +0800 [thread overview]
Message-ID: <4C7F4984.1060703@qq.com> (raw)
I'm a newbie and got some question when learning the linux kernel
about a macro:
page_to_pfn(pg)
I traced its definition,and finally got that:
#define __page_to_pfn(page) ((unsigned long)((page) - mem_map) +
ARCH_PFN_OFFSET)
why hot ((unsigned long)((page)-mem_map + ARCH_PFN_OFFSET)/sizeof
(struct page)
next reply other threads:[~2010-09-02 6:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-02 6:51 gaoqiang [this message]
2010-10-14 5:18 ` dear list Américo Wang
-- strict thread matches above, loose matches on Subject: below --
2010-09-04 3:42 gaoqiang
2010-09-06 4:57 ` Peter Teoh
2010-09-07 4:26 ` Om Narasimhan
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=4C7F4984.1060703@qq.com \
--to=834555262@qq.com \
--cc=linux-kernel@vger.kernel.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 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.