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Date:   Fri, 3 Jan 2020 15:42:48 +0100
From:   David Sterba <dsterba@suse.cz>
To:     Dennis Zhou <dennis@kernel.org>
Cc:     David Sterba <dsterba@suse.com>, Chris Mason <clm@fb.com>,
        Josef Bacik <josef@toxicpanda.com>,
        Omar Sandoval <osandov@osandov.com>, kernel-team@fb.com,
        linux-btrfs@vger.kernel.org
Subject: Re: [PATCH 12/12] btrfs: add correction to handle -1 edge case in
 async discard
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References: <cover.1577999991.git.dennis@kernel.org>
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On Thu, Jan 02, 2020 at 04:26:46PM -0500, Dennis Zhou wrote:
> >From Dave's testing, it's possible to drive a file system to have -1
> discardable_extents and a corresponding negative discardable_bytes. As
> btrfs_discard_calc_delay() is the only user of discardable_extents, we
> can correct here for any negative discardable_extents/discardable_bytes.

Changelog updated with the rough description of the workload.