On Tue, Jan 26, 2021 at 7:12 AM Christoph Hellwig <hch@xxxxxx> wrote:
>
> bio_alloc_mddev is never called with a NULL mddev, and ->bio_set is
> initialized in md_run, so it always must be initialized as well. Just
> open code the remaining call to bio_alloc_bioset.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Acked-by: Song Liu <song@xxxxxxxxxx>
> ---
> drivers/md/md.c | 12 +-----------
> drivers/md/md.h | 2 --
> drivers/md/raid1.c | 2 +-
> drivers/md/raid10.c | 2 +-
> 4 files changed, 3 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/md/md.c b/drivers/md/md.c
> index 7d1bb24add3107..e2b9dbb6e888f6 100644
> --- a/drivers/md/md.c
> +++ b/drivers/md/md.c
> @@ -340,16 +340,6 @@ static int start_readonly;
> */
> static bool create_on_open = true;
>
> -struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs,
> - struct mddev *mddev)
> -{
> - if (!mddev || !bioset_initialized(&mddev->bio_set))
> - return bio_alloc(gfp_mask, nr_iovecs);
> -
> - return bio_alloc_bioset(gfp_mask, nr_iovecs, &mddev->bio_set);
> -}
> -EXPORT_SYMBOL_GPL(bio_alloc_mddev);
> -
> static struct bio *md_bio_alloc_sync(struct mddev *mddev)
> {
> if (!mddev || !bioset_initialized(&mddev->sync_set))
> @@ -613,7 +603,7 @@ static void submit_flushes(struct work_struct *ws)
> atomic_inc(&rdev->nr_pending);
> atomic_inc(&rdev->nr_pending);
> rcu_read_unlock();
> - bi = bio_alloc_mddev(GFP_NOIO, 0, mddev);
> + bi = bio_alloc_bioset(GFP_NOIO, 0, &mddev->bio_set);
> bi->bi_end_io = md_end_flush;
> bi->bi_private = rdev;
> bio_set_dev(bi, rdev->bdev);
> diff --git a/drivers/md/md.h b/drivers/md/md.h
> index f13290ccc1c248..bcbba1b5ec4a71 100644
> --- a/drivers/md/md.h
> +++ b/drivers/md/md.h
> @@ -742,8 +742,6 @@ extern void md_rdev_clear(struct md_rdev *rdev);
> extern void md_handle_request(struct mddev *mddev, struct bio *bio);
> extern void mddev_suspend(struct mddev *mddev);
> extern void mddev_resume(struct mddev *mddev);
> -extern struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs,
> - struct mddev *mddev);
>
> extern void md_reload_sb(struct mddev *mddev, int raid_disk);
> extern void md_update_sb(struct mddev *mddev, int force);
> diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
> index 3b19141cdb4bc2..d2378765dc154f 100644
> --- a/drivers/md/raid1.c
> +++ b/drivers/md/raid1.c
> @@ -1104,7 +1104,7 @@ static void alloc_behind_master_bio(struct r1bio *r1_bio,
> int i = 0;
> struct bio *behind_bio = NULL;
>
> - behind_bio = bio_alloc_mddev(GFP_NOIO, vcnt, r1_bio->mddev);
> + behind_bio = bio_alloc_bioset(GFP_NOIO, vcnt, &r1_bio->mddev->bio_set);
> if (!behind_bio)
> return;
>
> diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
> index be8f14afb6d143..e1eefbec15d444 100644
> --- a/drivers/md/raid10.c
> +++ b/drivers/md/raid10.c
> @@ -4531,7 +4531,7 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr,
> return sectors_done;
> }
>
> - read_bio = bio_alloc_mddev(GFP_KERNEL, RESYNC_PAGES, mddev);
> + read_bio = bio_alloc_bioset(GFP_KERNEL, RESYNC_PAGES, &mddev->bio_set);
>
> bio_set_dev(read_bio, rdev->bdev);
> read_bio->bi_iter.bi_sector = (r10_bio->devs[r10_bio->read_slot].addr
> --
> 2.29.2
>
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