From: Andi Kleen <ak@suse.de>
To: paulmck@linux.vnet.ibm.com
Cc: Christoph Lameter <clameter@sgi.com>,
Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
linux-mm@kvack.org, akpm@linux-foundation.org, nacc@us.ibm.com
Subject: Re: [PATCH/RFC 0/11] Shared Policy Overview
Date: Thu, 28 Jun 2007 02:14:22 +0200 [thread overview]
Message-ID: <200706280214.23054.ak@suse.de> (raw)
In-Reply-To: <20070627234634.GI8604@linux.vnet.ibm.com>
On Thursday 28 June 2007 01:46:34 Paul E. McKenney wrote:
> On Thu, Jun 28, 2007 at 12:01:16AM +0200, Andi Kleen wrote:
> >
> > > The zonelist from MPOL_BIND is passed to __alloc_pages. As a result the
> > > RCU lock must be held over the call into the page allocator with reclaim
> > > etc etc. Note that the zonelist is part of the policy structure.
> >
> > Yes I realized this at some point too. RCU doesn't work here because
> > __alloc_pages can sleep. Have to use the reference counts even though
> > it adds atomic operations.
>
> Any reason SRCU wouldn't work here? From a quick glance at the patch,
> it seems possible to me.
We have reference counts anyways that can be used so it's not needed.
-Andi
--
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>
next prev parent reply other threads:[~2007-06-28 0:14 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-25 19:52 Lee Schermerhorn
2007-06-25 19:52 ` [PATCH/RFC 1/11] Shared Policy: move shared policy to inode/mapping Lee Schermerhorn
2007-06-25 19:52 ` [PATCH/RFC 2/11] Shared Policy: allocate shared policies as needed Lee Schermerhorn
2007-06-25 19:52 ` [PATCH/RFC 3/11] Shared Policy: let vma policy ops handle sub-vma policies Lee Schermerhorn
2007-06-25 19:52 ` [PATCH/RFC 4/11] Shared Policy: fix show_numa_maps() Lee Schermerhorn
2007-06-25 19:52 ` [PATCH/RFC 5/11] Shared Policy: Add hugepage shmem policy vm_ops Lee Schermerhorn
2007-06-25 19:53 ` [PATCH/RFC 6/11] Shared Policy: Factor alloc_page_pol routine Lee Schermerhorn
2007-06-25 19:53 ` [PATCH/RFC 7/11] Shared Policy: use shared policy for page cache allocations Lee Schermerhorn
2007-06-25 19:53 ` [PATCH/RFC 8/11] Shared Policy: fix migration of private mappings Lee Schermerhorn
2007-06-25 19:53 ` [PATCH/RFC 9/11] Shared Policy: mapped file policy persistence model Lee Schermerhorn
2007-06-25 19:53 ` [PATCH/RFC 10/11] Shared Policy: per cpuset shared file policy control Lee Schermerhorn
2007-06-25 21:10 ` Paul Jackson
2007-06-27 17:33 ` Lee Schermerhorn
2007-06-27 19:52 ` Paul Jackson
2007-06-27 20:22 ` Lee Schermerhorn
2007-06-27 20:36 ` Paul Jackson
2007-06-25 19:53 ` [PATCH/RFC 11/11] Shared Policy: add generic file set/get policy vm ops Lee Schermerhorn
2007-06-26 22:17 ` [PATCH/RFC 0/11] Shared Policy Overview Christoph Lameter
2007-06-27 13:43 ` Lee Schermerhorn
2007-06-26 22:21 ` Christoph Lameter
2007-06-26 22:42 ` Andi Kleen
2007-06-27 3:25 ` Christoph Lameter
2007-06-27 20:14 ` Lee Schermerhorn
2007-06-27 18:14 ` Lee Schermerhorn
2007-06-27 21:37 ` Christoph Lameter
2007-06-27 22:01 ` Andi Kleen
2007-06-27 22:08 ` Christoph Lameter
2007-06-27 23:46 ` Paul E. McKenney
2007-06-28 0:14 ` Andi Kleen [this message]
2007-06-29 21:47 ` Lee Schermerhorn
2007-06-28 13:42 ` Lee Schermerhorn
2007-06-28 22:02 ` Andi Kleen
2007-06-29 17:14 ` Lee Schermerhorn
2007-06-29 17:42 ` Andi Kleen
2007-06-30 18:34 ` [PATCH/RFC] Fix Mempolicy Ref Counts - was " Lee Schermerhorn
2007-07-03 18:09 ` Christoph Lameter
2007-06-29 1:39 ` Christoph Lameter
2007-06-29 9:01 ` Andi Kleen
2007-06-29 14:05 ` Christoph Lameter
2007-06-29 17:41 ` Lee Schermerhorn
2007-06-29 20:15 ` Christoph Lameter
2007-06-29 13:22 ` Lee Schermerhorn
2007-06-29 14:18 ` Christoph Lameter
2007-06-27 23:36 ` Lee Schermerhorn
2007-06-29 1:41 ` Christoph Lameter
2007-06-29 13:30 ` Lee Schermerhorn
2007-06-29 14:20 ` Andi Kleen
2007-06-29 21:40 ` Lee Schermerhorn
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=200706280214.23054.ak@suse.de \
--to=ak@suse.de \
--cc=Lee.Schermerhorn@hp.com \
--cc=akpm@linux-foundation.org \
--cc=clameter@sgi.com \
--cc=linux-mm@kvack.org \
--cc=nacc@us.ibm.com \
--cc=paulmck@linux.vnet.ibm.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