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

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Message-ID: <4C7D0A00.40601@redhat.com>
Date:	Tue, 31 Aug 2010 08:56:16 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	ext4 development <linux-ext4@...r.kernel.org>
Subject: [PATCH 0/2] ext4: a couple writeback path fixes

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
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