Re: [PATCH 25/30] block: add a sb_bdev_nr_blocks helper

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To: Christoph Hellwig <hch@xxxxxx>, Jens Axboe <axboe@xxxxxxxxx>
Subject: Re: [PATCH 25/30] block: add a sb_bdev_nr_blocks helper
From: Chaitanya Kulkarni <chaitanyak@xxxxxxxxxx>
Date: Mon, 18 Oct 2021 05:48:14 +0000
Accept-language: en-US
Cc: Coly Li <colyli@xxxxxxx>, Mike Snitzer <snitzer@xxxxxxxxxx>, Song Liu <song@xxxxxxxxxx>, David Sterba <dsterba@xxxxxxxx>, Josef Bacik <josef@xxxxxxxxxxxxxx>, "Theodore Ts'o" <tytso@xxxxxxx>, OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>, Dave Kleikamp <shaggy@xxxxxxxxxx>, Ryusuke Konishi <konishi.ryusuke@xxxxxxxxx>, Anton Altaparmakov <anton@xxxxxxxxxx>, Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>, Phillip Lougher <phillip@xxxxxxxxxxxxxxx>, Jan Kara <jack@xxxxxxxx>, "linux-block@xxxxxxxxxxxxxxx" <linux-block@xxxxxxxxxxxxxxx>, "dm-devel@xxxxxxxxxx" <dm-devel@xxxxxxxxxx>, "drbd-dev@xxxxxxxxxxxxxxxx" <drbd-dev@xxxxxxxxxxxxxxxx>, "linux-bcache@xxxxxxxxxxxxxxx" <linux-bcache@xxxxxxxxxxxxxxx>, "linux-raid@xxxxxxxxxxxxxxx" <linux-raid@xxxxxxxxxxxxxxx>, "linux-nvme@xxxxxxxxxxxxxxxxxxx" <linux-nvme@xxxxxxxxxxxxxxxxxxx>, "linux-scsi@xxxxxxxxxxxxxxx" <linux-scsi@xxxxxxxxxxxxxxx>, "target-devel@xxxxxxxxxxxxxxx" <target-devel@xxxxxxxxxxxxxxx>, "linux-fsdevel@xxxxxxxxxxxxxxx" <linux-fsdevel@xxxxxxxxxxxxxxx>, "linux-btrfs@xxxxxxxxxxxxxxx" <linux-btrfs@xxxxxxxxxxxxxxx>, "linux-ext4@xxxxxxxxxxxxxxx" <linux-ext4@xxxxxxxxxxxxxxx>, "jfs-discussion@xxxxxxxxxxxxxxxxxxxxx" <jfs-discussion@xxxxxxxxxxxxxxxxxxxxx>, "linux-nfs@xxxxxxxxxxxxxxx" <linux-nfs@xxxxxxxxxxxxxxx>, "linux-nilfs@xxxxxxxxxxxxxxx" <linux-nilfs@xxxxxxxxxxxxxxx>, "linux-ntfs-dev@xxxxxxxxxxxxxxxxxxxxx" <linux-ntfs-dev@xxxxxxxxxxxxxxxxxxxxx>, "ntfs3@xxxxxxxxxxxxxxx" <ntfs3@xxxxxxxxxxxxxxx>, "reiserfs-devel@xxxxxxxxxxxxxxx" <reiserfs-devel@xxxxxxxxxxxxxxx>
In-reply-to: <20211015132643.1621913-26-hch@lst.de>
Thread-index: AQHXwcjkKdwm0t7mp0iS/ZytkYe2sKvYQ+kA
Thread-topic: [PATCH 25/30] block: add a sb_bdev_nr_blocks helper
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.1.0

On 10/15/21 06:26, Christoph Hellwig wrote:
> Add a helper to return the size of sb->s_bdev in sb->s_blocksize_bits
> based unites.  Note that SECTOR_SHIFT has to be open coded due to
> include dependency issues for now, but I have a plan to sort that out
> eventually.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Looks good.

Reviewed-by: Chiatanya Kulkarni <kch@xxxxxxxxxx>

References:
- don't use ->bd_inode to access the block device size v2
  - From: Christoph Hellwig
- [PATCH 25/30] block: add a sb_bdev_nr_blocks helper
  - From: Christoph Hellwig

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