linux-kernel - Re: [PATCH 0/10] Per-bdi writeback flusher threads v12

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]

Message-Id: <1246265017.2560.446.camel@ymzhang>
Date:	Mon, 29 Jun 2009 16:43:37 +0800
From:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	chris.mason@...cle.com, david@...morbit.com, hch@...radead.org,
	akpm@...ux-foundation.org, jack@...e.cz, richard@....demon.co.uk,
	damien.wyart@...e.fr, fweisbec@...il.com, Alan.Brunelle@...com
Subject: Re: [PATCH 0/10] Per-bdi writeback flusher threads v12

On Thu, 2009-06-25 at 12:41 +0200, Jens Axboe wrote:
> Hi,
> 
> Here's the 12th version of the writeback patches. Changes since v11:
> 
> - Fixup kthread_run() error check, it should use IS_ERR() instead of
>   checking for NULL. Thanks Andrew.
> - Fix a silly buglet that would quickly respawn otherwise idle threads
>   once they had exited. This was due to an inverted if test. Didn't cause
>   any harm except potentially too many writeback threads setting idle in
>   the system.
> - Integrate kupdate periodic writeback with the explicit writeback. Cleans
>   that part up.
> - Update to 2.6.31-rc1. With the recent patches from viro and hch, v11
>   did not apply cleanly at all to 2.6.31-rc1.
> 
> For ease of patching, I've put the full diff here:
> 
>   http://kernel.dk/writeback-v12.patch
> 
> and also stored this in a writeback-v12 branch that will not change,
> you can pull that into Linus tree from here:
> 
>   git://git.kernel.dk/linux-2.6-block.git writeback-v12
> 

> Please test and report results/interesting finds.
I tested it against 2.6.31-rc1 on a couple of machines.
1) System didn't hang;
2) Comapring with previous bdi flusher versions, I didn't find clear performance
different.

>  Thanks! The target
> for this patchset is 2.6.32 and it'll be sitting (and has been for the past


--
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/