Re: [PATCH 23/29] f2fs: Convert to bdev_open_by_dev/path()

[Chao Yu <chao@xxxxxxxxxx>]

On 2023/8/23 18:48, Jan Kara wrote:
> Convert f2fs to use bdev_open_by_dev/path() and pass the handle around.

Hi Jan,

Seems it will confilct w/ below commit, could you please take a look?

https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git/commit/?h=dev&id=51bf8d3c81992ae57beeaf22df78ed7c2782af9d

Thanks,

> CC: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
> CC: Chao Yu <chao@xxxxxxxxxx>
> CC: linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx
> Acked-by: Christoph Hellwig <hch@xxxxxx>
> Signed-off-by: Jan Kara <jack@xxxxxxx>
> ---
>   fs/f2fs/f2fs.h  |  1 +
>   fs/f2fs/super.c | 17 +++++++++--------
>   2 files changed, 10 insertions(+), 8 deletions(-)
>
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index e18272ae3119..2ec6c10df636 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -1234,6 +1234,7 @@ struct f2fs_bio_info {
>   #define FDEV(i)				(sbi->devs[i])
>   #define RDEV(i)				(raw_super->devs[i])
>   struct f2fs_dev_info {
> +	struct bdev_handle *bdev_handle;
>   	struct block_device *bdev;
>   	char path[MAX_PATH_LEN];
>   	unsigned int total_segments;
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index aa1f9a3a8037..885dcbd81859 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -1561,7 +1561,7 @@ static void destroy_device_list(struct f2fs_sb_info *sbi)
>   	int i;
>   
>   	for (i = 0; i < sbi->s_ndevs; i++) {
> -		blkdev_put(FDEV(i).bdev, sbi->sb);
> +		bdev_release(FDEV(i).bdev_handle);
>   #ifdef CONFIG_BLK_DEV_ZONED
>   		kvfree(FDEV(i).blkz_seq);
>   #endif
> @@ -4196,9 +4196,9 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
>   
>   		if (max_devices == 1) {
>   			/* Single zoned block device mount */
> -			FDEV(0).bdev =
> -				blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, mode,
> -						  sbi->sb, NULL);
> +			FDEV(0).bdev_handle = bdev_open_by_dev(
> +					sbi->sb->s_bdev->bd_dev, mode, sbi->sb,
> +					NULL);
>   		} else {
>   			/* Multi-device mount */
>   			memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
> @@ -4216,12 +4216,13 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
>   					(FDEV(i).total_segments <<
>   					sbi->log_blocks_per_seg) - 1;
>   			}
> -			FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, mode,
> -							  sbi->sb, NULL);
> +			FDEV(i).bdev_handle = bdev_open_by_path(FDEV(i).path,
> +					mode, sbi->sb, NULL);
>   		}
> -		if (IS_ERR(FDEV(i).bdev))
> -			return PTR_ERR(FDEV(i).bdev);
> +		if (IS_ERR(FDEV(i).bdev_handle))
> +			return PTR_ERR(FDEV(i).bdev_handle);
>   
> +		FDEV(i).bdev = FDEV(i).bdev_handle->bdev;
>   		/* to release errored devices */
>   		sbi->s_ndevs = i + 1;
>