Re: [PATCH block/for-next v2 07/16] bcachefs: use new helper to get inode from block_device

From: Damien Le Moal
Date: Mon Nov 27 2023 - 02:46:47 EST


On 11/27/23 15:21, Yu Kuai wrote:
> From: Yu Kuai <yukuai3@xxxxxxxxxx>
>
> Which is more efficiency, and also prepare to remove the field
> 'bd_inode' from block_device.
>
> Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
> ---
> fs/bcachefs/util.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/bcachefs/util.h b/fs/bcachefs/util.h
> index 2984b57b2958..fe7ccb3a3517 100644
> --- a/fs/bcachefs/util.h
> +++ b/fs/bcachefs/util.h
> @@ -518,7 +518,7 @@ int bch2_bio_alloc_pages(struct bio *, size_t, gfp_t);
>
> static inline sector_t bdev_sectors(struct block_device *bdev)
> {
> - return bdev->bd_inode->i_size >> 9;
> + return bdev_inode(bdev)->i_size >> 9;

shouldn't this use i_size_read() ?

I missed the history with this but why not use bdev_nr_sectors() and delete this
helper ?

> }
>
> #define closure_bio_submit(bio, cl) \

--
Damien Le Moal
Western Digital Research