linux-ext4 - Re: [PATCH] ext4: start to support iopoll method

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Message-ID: <20200210102450.GF12923@quack2.suse.cz>
Date:   Mon, 10 Feb 2020 11:24:50 +0100
From:   Jan Kara <jack@...e.cz>
To:     Xiaoguang Wang <xiaoguang.wang@...ux.alibaba.com>
Cc:     linux-ext4@...r.kernel.org, tytso@....edu, jack@...e.cz
Subject: Re: [PATCH] ext4: start to support iopoll method

On Fri 07-02-20 20:07:58, Xiaoguang Wang wrote:
> Since commit "b1b4705d54ab ext4: introduce direct I/O read using
> iomap infrastructure", we can easily make ext4 support iopoll
> method, just use iomap_dio_iopoll().
> 
> Signed-off-by: Xiaoguang Wang <xiaoguang.wang@...ux.alibaba.com>

The patch looks good to me. You can add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  fs/ext4/file.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/fs/ext4/file.c b/fs/ext4/file.c
> index 5f225881176b..0d624250a62b 100644
> --- a/fs/ext4/file.c
> +++ b/fs/ext4/file.c
> @@ -872,6 +872,7 @@ const struct file_operations ext4_file_operations = {
>  	.llseek		= ext4_llseek,
>  	.read_iter	= ext4_file_read_iter,
>  	.write_iter	= ext4_file_write_iter,
> +	.iopoll		= iomap_dio_iopoll,
>  	.unlocked_ioctl = ext4_ioctl,
>  #ifdef CONFIG_COMPAT
>  	.compat_ioctl	= ext4_compat_ioctl,
> -- 
> 2.17.2
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR