linux-kernel - Re: [PATCHv4 17/17] writeback: lessen sync

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Message-ID: <1275628414.25847.2.camel@localhost>
Date:	Fri, 04 Jun 2010 08:13:34 +0300
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCHv4 17/17] writeback: lessen sync_supers wakeup count

On Fri, 2010-06-04 at 05:26 +0100, Al Viro wrote:
> I suspect that most of those used to rely on lock_super() way back.
> In case of ext2_sync_super() we probably want just to move ->s_dirt = 0
> into the very beginning; no serialization is really needed beyond (_maybe_)
> some barriers.  No idea about affs, needs to be checked.

Yeah, moving s_dirt to the beginning should work. I think the same
should be done for affs. I'll look at other FS-es WRT this as well.

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)

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