Re: [PATCH -next v3 3/5] ext4: get buffer head before read_mmp_block

[Jan Kara <jack@suse.cz>]

On Tue 19-10-21 14:49:57, Ye Bin wrote:
> There is only pass NULL 'bh' in ext4_multi_mount_protect,
> So just call sb_getblk get buffer head fisrt, and we will
> simplify read_mmp_block function.
> 
> Signed-off-by: Ye Bin <yebin10@huawei.com>

I don't think there's a need to separate this into a special patch. Just
fold this change into patch 4. With that feel free to add:

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

The combined change looks good to me.

								Honza

> ---
>  fs/ext4/mmp.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
> index 4af8b99ade84..6ac6aacd8fa5 100644
> --- a/fs/ext4/mmp.c
> +++ b/fs/ext4/mmp.c
> @@ -295,6 +295,10 @@ int ext4_multi_mount_protect(struct super_block *sb,
>  		goto failed;
>  	}
>  
> +	bh = sb_getblk(sb, mmp_block);
> +	if (bh)
> +		goto failed;
> +
>  	retval = read_mmp_block(sb, &bh, mmp_block);
>  	if (retval)
>  		goto failed;
> -- 
> 2.31.1
> 
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR