linux-kernel - Re: [PATCH] f2fs: use flush command instead of FUA for zoned device

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Message-ID: <Yl+XIjiuFRN9Pzxv@infradead.org>
Date:   Tue, 19 Apr 2022 22:16:18 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Jaegeuk Kim <jaegeuk@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [PATCH] f2fs: use flush command instead of FUA for zoned device

On Tue, Apr 19, 2022 at 02:57:03PM -0700, Jaegeuk Kim wrote:
> The block layer for zoned disk can reorder the FUA'ed IOs. Let's use flush
> command to keep the write order.

The block layer can reorder all commands.  Given that FUA only affects
the command itself that should not matter.  What is this trying to fix?