linux-ext4 - Re: [f2fs-dev] [PATCH 16/17] block: use iomap for writes to block devices

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Message-ID: <20230426130033.ps363bz472jwlgl6@localhost>
Date:   Wed, 26 Apr 2023 15:00:33 +0200
From:   Pankaj Raghav <p.raghav@...sung.com>
To:     Christoph Hellwig <hch@....de>
CC:     Jens Axboe <axboe@...nel.dk>, <linux-block@...r.kernel.org>,
        <linux-nfs@...r.kernel.org>, <cluster-devel@...hat.com>,
        <linux-xfs@...r.kernel.org>, Miklos Szeredi <miklos@...redi.hu>,
        "Darrick J. Wong" <djwong@...nel.org>,
        <linux-kernel@...r.kernel.org>,
        Matthew Wilcox <willy@...radead.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>,
        David Howells <dhowells@...hat.com>, <linux-mm@...ck.org>,
        <linux-fsdevel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        <linux-ext4@...r.kernel.org>, <ceph-devel@...r.kernel.org>,
        <p.raghav@...sung.com>
Subject: Re: [f2fs-dev] [PATCH 16/17] block: use iomap for writes to block
 devices

On Mon, Apr 24, 2023 at 07:49:25AM +0200, Christoph Hellwig wrote:
> Use iomap in buffer_head compat mode to write to block devices.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  block/Kconfig |  1 +
>  block/fops.c  | 33 +++++++++++++++++++++++++++++----
>  2 files changed, 30 insertions(+), 4 deletions(-)
> 
> diff --git a/block/Kconfig b/block/Kconfig
> index 941b2dca70db73..672b08f0096ab4 100644
> --- a/block/Kconfig
> +++ b/block/Kconfig
> @@ -5,6 +5,7 @@
>  menuconfig BLOCK
>         bool "Enable the block layer" if EXPERT
>         default y
> +       select IOMAP

This needs to be FS_IOMAP.

>         select SBITMAP
>         help
>  	 Provide block layer support for the kernel.