linux-kernel - Re: [PATCH 07/12] writeback: remove unused nonblocking and congestion checks (xfs)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 20 Nov 2009 18:24:41 +1100
From:	Dave Chinner <david@...morbit.com>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	Christoph Hellwig <hch@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 07/12] writeback: remove unused nonblocking and
	congestion checks (xfs)

On Thu, Nov 19, 2009 at 04:05:22PM +0800, Wu Fengguang wrote:
> On Thu, Nov 19, 2009 at 05:27:55AM +0800, Dave Chinner wrote:
> > On Wed, Nov 18, 2009 at 04:26:55PM +0800, Wu Fengguang wrote:
> > > No one is calling wb_writeback and write_cache_pages with
> > > wbc.nonblocking=1 any more. And lumpy pageout will want to do
> > > nonblocking writeback without the congestion wait.
> > 
> > ....
> > 
> > > --- linux.orig/fs/xfs/linux-2.6/xfs_aops.c	2009-11-06 09:22:35.000000000 +0800
> > > +++ linux/fs/xfs/linux-2.6/xfs_aops.c	2009-11-06 09:52:21.000000000 +0800
> > > @@ -908,12 +908,8 @@ xfs_convert_page(
> > >  
> > >  			bdi = inode->i_mapping->backing_dev_info;
> > >  			wbc->nr_to_write--;
> > > -			if (bdi_write_congested(bdi)) {
> > > -				wbc->encountered_congestion = 1;
> > 
> > bdi is unused now, so can be removed as well. Otherwise looks fine.
> 
> Thanks, here is the updated patch.

Looks good.

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/