On 8/31/25 8:32 PM, Yu Kuai wrote:
> From: Yu Kuai <yukuai3@huawei.com>
> 
> Unify bio split code, prepare to fix disordered split IO.
> 
> Signed-off-by: Yu Kuai <yukuai3@huawei.com>
> ---
>   drivers/md/md-linear.c | 12 ++----------
>   1 file changed, 2 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/md/md-linear.c b/drivers/md/md-linear.c
> index 59d7963c7843..701e3aac0a21 100644
> --- a/drivers/md/md-linear.c
> +++ b/drivers/md/md-linear.c
> @@ -256,19 +256,11 @@ static bool linear_make_request(struct mddev *mddev, struct bio *bio)
> 
>   	if (unlikely(bio_end_sector(bio) > end_sector)) {
>   		/* This bio crosses a device boundary, so we have to split it */
> -		struct bio *split = bio_split(bio, end_sector - bio_sector,
> +		bio = bio_submit_split_bioset(bio, end_sector - bio_sector,
>   					      GFP_NOIO, &mddev->bio_set);

This patch cannot have been tested because it triggers the following
build error:

drivers/md/md-linear.c: In function ‘linear_make_request’:
./include/linux/gfp_types.h:381:25: error: passing argument 3 of 
‘bio_submit_split_bioset’ makes pointer from integer without a cast 
[-Wint-conversion]
   381 | #define GFP_NOIO        (__GFP_RECLAIM)
       |                         ^~~~~~~~~~~~~~~
       |                         |
       |                         unsigned int

Bart.