linux-ext4 - Re: [PATCH 0/2] ext4: a couple writeback path fixes

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Message-ID: <4C817292.9070000@redhat.com>
Date:	Fri, 03 Sep 2010 17:11:30 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	ext4 development <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH 0/2] ext4: a couple writeback path fixes

Eric Sandeen wrote:
> I've found a couple small problems in the ext4_da_writepages path;
> 
> 1) ext4_num_dirty_pages() can continue looping after max_pages is reached
>    - this leads to wasted cpu cycles during writeback
> 
> 2) bumping nr_to_write can wrap if we started with LONG_MAX
>    - Not sure of all ramifications, but nr_to_write = -8 can't be good
> 
> -Eric

sigh just nak this whole thing for now, too many errors.

Will resubmit after more careful reading, patching, and testing.

Sorry for the noise.

-Eric
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