linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
	linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
	David Rientjes <rientjes@google.com>,
	Andi Kleen <andi@firstfloor.org>,
	Wu Fengguang <fengguang.wu@intel.com>,
	KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/6] pagemap: avoid splitting thp when reading /proc/pid/pagemap
Date: Mon, 16 Jan 2012 12:18:43 -0500	[thread overview]
Message-ID: <4F145BF3.8030802@ah.jp.nec.com> (raw)
In-Reply-To: <20120115120605.GI3236@redhat.com>

On Sun, Jan 15, 2012 at 01:06:05PM +0100, Andrea Arcangeli wrote:
> On Sat, Jan 14, 2012 at 06:00:26PM +0100, Andrea Arcangeli wrote:
> > Why don't you pass the pmd and then do "if (pmd_present(pmd))
> > page_to_pfn(pmd_page(pmd)) ? What's the argument for the cast. I'm
> 
> Of course I meant pmd_pfn above... in short as a replacement of the
> pte_pfn in your patch.
> 
> About the _stable function, I was now thinking maybe _lock suffix is
> more appropriate than _stable, because that function effectively has
> the objective of taking the page_table_lock in the most efficient way,
> and not much else other than taking the lock. Adding a comment that
> it's only safe to call with the mmap_sem held in the inline version in
> the .h file (the one that then would call the __ version in the .c
> file).

OK, I will use _lock suffix and add the comment in the next post.

  reply	other threads:[~2012-01-16 17:20 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-12 19:34 [PATCH 0/6 v3] pagemap handles transparent hugepage Naoya Horiguchi
2012-01-12 19:34 ` [PATCH 1/6] pagemap: avoid splitting thp when reading /proc/pid/pagemap Naoya Horiguchi
2012-01-14 17:00   ` Andrea Arcangeli
2012-01-15 12:06     ` Andrea Arcangeli
2012-01-16 17:18       ` Naoya Horiguchi [this message]
2012-01-12 19:34 ` [PATCH 2/6] thp: optimize away unnecessary page table locking Naoya Horiguchi
2012-01-13 12:04   ` Hillf Danton
2012-01-13 15:14     ` Naoya Horiguchi
2012-01-14  3:24       ` Hillf Danton
2012-01-14 17:19   ` Andrea Arcangeli
2012-01-12 19:34 ` [PATCH 3/6] pagemap: export KPF_THP Naoya Horiguchi
2012-01-12 19:34 ` [PATCH 4/6] pagemap: document KPF_THP and make page-types aware of it Naoya Horiguchi
2012-01-12 19:34 ` [PATCH 5/6] introduce thp_ptep_get() Naoya Horiguchi
2012-01-12 19:34 ` [PATCH 6/6] pagemap: introduce data structure for pagemap entry Naoya Horiguchi
2012-01-13 21:54 ` [PATCH 0/6 v3] pagemap handles transparent hugepage Andrew Morton
2012-01-16 17:18 [PATCH 1/6] pagemap: avoid splitting thp when reading /proc/pid/pagemap Naoya Horiguchi
2012-01-27 23:02 [PATCH 0/6 v4] pagemap handles transparent hugepage Naoya Horiguchi
2012-01-27 23:02 ` [PATCH 1/6] pagemap: avoid splitting thp when reading /proc/pid/pagemap Naoya Horiguchi
2012-01-29 13:17   ` Hillf Danton
2012-01-30 19:23     ` Naoya Horiguchi
2012-02-08 15:51 [PATCH 0/6 v5] pagemap handles transparent hugepage Naoya Horiguchi
2012-02-08 15:51 ` [PATCH 1/6] pagemap: avoid splitting thp when reading /proc/pid/pagemap Naoya Horiguchi

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=4F145BF3.8030802@ah.jp.nec.com \
    --to=n-horiguchi@ah.jp.nec.com \
    --cc=aarcange@redhat.com \
    --cc=akpm@linux-foundation.org \
    --cc=andi@firstfloor.org \
    --cc=fengguang.wu@intel.com \
    --cc=kamezawa.hiroyu@jp.fujitsu.com \
    --cc=kosaki.motohiro@jp.fujitsu.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=rientjes@google.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 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).