linux-ext4 - Re: [PATCH 10/12] ext4: use fs_holder

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Date:   Thu, 3 Aug 2023 15:26:12 +0200
From:   Jan Kara <jack@...e.cz>
To:     Christoph Hellwig <hch@....de>
Cc:     Al Viro <viro@...iv.linux.org.uk>,
        Christian Brauner <brauner@...nel.org>,
        Jan Kara <jack@...e.cz>, Chris Mason <clm@...com>,
        Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>, Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <chao@...nel.org>,
        Ryusuke Konishi <konishi.ryusuke@...il.com>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Jens Axboe <axboe@...nel.dk>, linux-btrfs@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        linux-nilfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-xfs@...r.kernel.org, linux-block@...r.kernel.org
Subject: Re: [PATCH 10/12] ext4: use fs_holder_ops for the log device

On Wed 02-08-23 17:41:29, Christoph Hellwig wrote:
> Use the generic fs_holder_ops to shut down the file system when the
> log device goes away instead of duplicating the logic.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>

Looks good. Feel free to add:

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

								Honza

> ---
>  fs/ext4/super.c | 11 +----------
>  1 file changed, 1 insertion(+), 10 deletions(-)
> 
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index 2ccb19d345c6dd..063832e2d12a8e 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -1096,15 +1096,6 @@ void ext4_update_dynamic_rev(struct super_block *sb)
>  	 */
>  }
>  
> -static void ext4_bdev_mark_dead(struct block_device *bdev)
> -{
> -	ext4_force_shutdown(bdev->bd_holder, EXT4_GOING_FLAGS_NOLOGFLUSH);
> -}
> -
> -static const struct blk_holder_ops ext4_holder_ops = {
> -	.mark_dead		= ext4_bdev_mark_dead,
> -};
> -
>  /*
>   * Open the external journal device
>   */
> @@ -1113,7 +1104,7 @@ static struct block_device *ext4_blkdev_get(dev_t dev, struct super_block *sb)
>  	struct block_device *bdev;
>  
>  	bdev = blkdev_get_by_dev(dev, BLK_OPEN_READ | BLK_OPEN_WRITE, sb,
> -				 &ext4_holder_ops);
> +				 &fs_holder_ops);
>  	if (IS_ERR(bdev))
>  		goto fail;
>  	return bdev;
> -- 
> 2.39.2
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR