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From: David Sterba <dsterba@suse.cz>
To: Naohiro Aota <naohiro.aota@wdc.com>
Cc: linux-btrfs@vger.kernel.org, linux-block@vger.kernel.org,
	Jens Axboe <axboe@kernel.dk>, David Sterba <dsterba@suse.com>,
	Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Subject: Re: [PATCH 1/3] block: fix arg type of bio_trim()
Date: Thu, 8 Jul 2021 16:57:22 +0200	[thread overview]
Message-ID: <20210708145722.GD2610@twin.jikos.cz> (raw)
In-Reply-To: <20210708131057.259327-2-naohiro.aota@wdc.com>

On Thu, Jul 08, 2021 at 10:10:55PM +0900, Naohiro Aota wrote:
> From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
> 
> The function bio_trim has offset and size arguments that are declared
> as int.
> 
> The callers of this function uses sector_t type when passing the offset
> and size e,g. drivers/md/raid1.c:narrow_write_error() and
> drivers/md/raid1.c:narrow_write_error().
> 
> Change offset & size arguments to sector_t type for bio_trim().
> 
> Tested-by: Naohiro Aota <naohiro.aota@wdc.com>
> Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
> ---
>  block/bio.c         | 2 +-
>  include/linux/bio.h | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/block/bio.c b/block/bio.c
> index 44205dfb6b60..d342ce84f6cf 100644
> --- a/block/bio.c
> +++ b/block/bio.c
> @@ -1465,7 +1465,7 @@ EXPORT_SYMBOL(bio_split);
>   * @offset:	number of sectors to trim from the front of @bio
>   * @size:	size we want to trim @bio to, in sectors
>   */
> -void bio_trim(struct bio *bio, int offset, int size)
> +void bio_trim(struct bio *bio, sector_t offset, sector_t size)

sectort_t seems to be the right one, there are << 9 in the function so
that could lead to some bugs if the offset and size are at the boundary.

>  {
>  	/* 'bio' is a cloned bio which we need to trim to match
>  	 * the given offset and size.
> diff --git a/include/linux/bio.h b/include/linux/bio.h
> index a0b4cfdf62a4..fb663152521e 100644
> --- a/include/linux/bio.h
> +++ b/include/linux/bio.h
> @@ -379,7 +379,7 @@ static inline void bip_set_seed(struct bio_integrity_payload *bip,
>  
>  #endif /* CONFIG_BLK_DEV_INTEGRITY */
>  
> -extern void bio_trim(struct bio *bio, int offset, int size);
> +void bio_trim(struct bio *bio, sector_t offset, sector_t size);

You may want to keep the extern for consistency in that file, though
it's not necessary for the prototype.

The patch is simple I can take it through the btrfs tree with the other
fixes unless there are objections.

  reply	other threads:[~2021-07-08 15:00 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-08 13:10 [PATCH 0/3] fix argument type of bio_trim() Naohiro Aota
2021-07-08 13:10 ` [PATCH 1/3] block: fix arg " Naohiro Aota
2021-07-08 14:57   ` David Sterba [this message]
2021-07-09  0:42     ` Damien Le Moal
2021-07-09  4:53       ` Naohiro Aota
2021-07-09  4:39     ` Naohiro Aota
2021-07-09  4:55       ` Naohiro Aota
2021-07-08 13:10 ` [PATCH 2/3] btrfs: fix argument type of btrfs_bio_clone_partial() Naohiro Aota
2021-07-08 15:00   ` David Sterba
2021-07-09  5:01     ` Naohiro Aota
2021-07-08 13:10 ` [PATCH 3/3] btrfs: drop unnecessary ASSERT from btrfs_submit_direct() Naohiro Aota
2021-07-08 13:54   ` David Sterba
2021-07-08 15:03   ` David Sterba

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