linux-kernel - Re: [PATCH] btrfs: Implement lazytime

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Message-Id: <20200115134536820.LBFZ.46476.ppp.dion.ne.jp@dmta0009.auone-net.jp>
Date:   Wed, 15 Jan 2020 22:45:36 +0900
From:   Kusanagi Kouichi <slash@...auone-net.jp>
To:     dsterba@...e.cz
Cc:     linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] btrfs: Implement lazytime

On 2020-01-14 22:21:07 +0100, David Sterba wrote:
> On Tue, Jan 14, 2020 at 05:53:24PM +0900, Kusanagi Kouichi wrote:
> > I tested with xfstests and lazytime didn't cause any new failures.
> 
> The changelog should describe what the patch does (the 'why' part too,
> but this is obvious from the subject in this case). That fstests pass
> without new failures is nice but there should be a specific test for
> that or instructions in the changelog how to test.

To test lazytime, I set the following variables:
TEST_FS_MOUNT_OPTS="-o lazytime,space_cache=v2"
MOUNT_OPTIONS="-o lazytime,space_cache=v2"