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 Re: [PATCH block/for-next v2 07/16] bcachefs: use new helper to get inode from block_device
 
To: Yu Kuai <yukuai1@xxxxxxxxxxxxxxx>, hch@xxxxxxxxxxxxx, ming.lei@xxxxxxxxxx, axboe@xxxxxxxxx, roger.pau@xxxxxxxxxx, colyli@xxxxxxx, kent.overstreet@xxxxxxxxx, joern@xxxxxxxxxxxxxxx, miquel.raynal@xxxxxxxxxxx, richard@xxxxxx, vigneshr@xxxxxx, sth@xxxxxxxxxxxxx, hoeppner@xxxxxxxxxxxxx, hca@xxxxxxxxxxxxx, gor@xxxxxxxxxxxxx, agordeev@xxxxxxxxxxxxx, jejb@xxxxxxxxxxxxx, martin.petersen@xxxxxxxxxx, clm@xxxxxx, josef@xxxxxxxxxxxxxx, dsterba@xxxxxxxx, viro@xxxxxxxxxxxxxxxxxx, brauner@xxxxxxxxxx, nico@xxxxxxxxxxx, xiang@xxxxxxxxxx, chao@xxxxxxxxxx, tytso@xxxxxxx, adilger.kernel@xxxxxxxxx, agruenba@xxxxxxxxxx, jack@xxxxxxxx, konishi.ryusuke@xxxxxxxxx, dchinner@xxxxxxxxxx, linux@xxxxxxxxxxxxxx, min15.li@xxxxxxxxxxx, yukuai3@xxxxxxxxxx, willy@xxxxxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, hare@xxxxxxx, p.raghav@xxxxxxxxxxxFrom: Damien Le Moal <dlemoal@xxxxxxxxxx>Date: Mon, 27 Nov 2023 16:09:47 +0900Cc: linux-block@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-bcache@xxxxxxxxxxxxxxx, linux-mtd@xxxxxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, linux-bcachefs@xxxxxxxxxxxxxxx, linux-btrfs@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-erofs@xxxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, gfs2@xxxxxxxxxxxxxxx, linux-nilfs@xxxxxxxxxxxxxxx, yi.zhang@xxxxxxxxxx, yangerkun@xxxxxxxxxxDelivery-date: Mon, 27 Nov 2023 07:10:10 +0000List-id: Xen developer discussion <xen-devel.lists.xenproject.org> 
 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
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