linux-kernel - Re: [PATCH] fs-writeback: drop wb->list_lock during blk_finish

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Message-ID: <20150916200012.GB8624@ret.masoncoding.com>
Date:	Wed, 16 Sep 2015 16:00:12 -0400
From:	Chris Mason <clm@...com>
To:	Jan Kara <jack@...e.cz>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Dave Chinner <david@...morbit.com>,
	Josef Bacik <jbacik@...com>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	Neil Brown <neilb@...e.de>, Christoph Hellwig <hch@....de>
Subject: Re: [PATCH] fs-writeback: drop wb->list_lock during blk_finish_plug()

On Wed, Sep 16, 2015 at 09:58:06PM +0200, Jan Kara wrote:
> On Wed 16-09-15 11:16:21, Chris Mason wrote:
> > Short version, Linus' patch still gives bigger IOs and similar perf to
> > Dave's original.  I should have done the blktrace runs for 60 seconds
> > instead of 30, I suspect that would even out the average sizes between
> > the three patches.
> 
> Thanks for the data Chris. So I guess we are fine with what's currently in,
> right?

Looks like it works well to me.

-chris

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