linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: allow direct read for zoned device

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Message-ID: <40bf2957-8134-a30a-fa2b-8f6593692c24@kernel.org>
Date:   Wed, 5 Oct 2022 22:05:50 +0800
From:   Chao Yu <chao@...nel.org>
To:     Jaegeuk Kim <jaegeuk@...nel.org>, linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Cc:     stable@...r.kernel.org
Subject: Re: [f2fs-dev] [PATCH] f2fs: allow direct read for zoned device

On 2022/10/1 6:53, Jaegeuk Kim wrote:
> This reverts dbf8e63f48af ("f2fs: remove device type check for direct IO"),
> and apply the below first version, since it contributed out-of-order DIO writes.
> 
> For zoned devices, f2fs forbids direct IO and forces buffered IO
> to serialize write IOs. However, the constraint does not apply to
> read IOs.
> 
> Cc: stable@...r.kernel.org
> Fixes: dbf8e63f48af ("f2fs: remove device type check for direct IO")
> Signed-off-by: Eunhee Rho <eunhee83.rho@...sung.com>
> Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>

Reviewed-by: Chao Yu <chao@...nel.org>

Thanks,