linux-ext4 - Re: [PATCH] ext4: Unmap metadata when zeroing blocks

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Message-ID: <20160930060358.onzfpefx7xb3fw7q@thunk.org>
Date:   Fri, 30 Sep 2016 02:03:58 -0400
From:   Theodore Ts'o <tytso@....edu>
To:     Jan Kara <jack@...e.cz>
Cc:     linux-ext4@...r.kernel.org
Subject: Re: [PATCH] ext4: Unmap metadata when zeroing blocks

On Tue, Sep 27, 2016 at 06:15:18PM +0200, Jan Kara wrote:
> When zeroing blocks for DAX allocations, we also have to unmap aliases
> in the block device mappings. Otherwise writeback can overwrite zeros
> with stale data from block device page cache.
> 
> Signed-off-by: Jan Kara <jack@...e.cz>

Thanks, applied.

					- Ted
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