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Date:   Thu, 24 Mar 2022 22:48:10 -0700
From:   Christoph Hellwig <hch@infradead.org>
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Subject: Re: [PATCH] exfat: reduce block requests when zeroing a cluster
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On Fri, Mar 25, 2022 at 03:00:55AM +0000, Yuezhang.Mo@sony.com wrote:
> +#include <linux/blk_types.h>

blk_types.h is not a header for public use.  What do you want it for?