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md/md-bitmap: factor behind write counters out from bitmap_{start/end}write()

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behind_write is only used in raid1, prepare to refactor
bitmap_{start/end}write(), there are no functional changes.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Xiao Ni <xni@redhat.com>
Link: https://lore.kernel.org/r/20250109015145.158868-2-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
This commit is contained in:
Yu Kuai
2025-01-09 09:51:41 +08:00
committed by Song Liu
parent 4fa91616c0
commit 08c50142a1
6 changed files with 56 additions and 40 deletions
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12
drivers/md/raid1.c
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@@ -420,10 +420,11 @@ static void close_write(struct r1bio *r1_bio)
r1_bio->behind_master_bio = NULL;
}
if (test_bit(R1BIO_BehindIO, &r1_bio->state))
mddev->bitmap_ops->end_behind_write(mddev);
/* clear the bitmap if all writes complete successfully */
mddev->bitmap_ops->endwrite(mddev, r1_bio->sector, r1_bio->sectors,
!test_bit(R1BIO_Degraded, &r1_bio->state),
test_bit(R1BIO_BehindIO, &r1_bio->state));
!test_bit(R1BIO_Degraded, &r1_bio->state));
md_write_end(mddev);
}
@@ -1645,9 +1646,10 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio,
stats.behind_writes < max_write_behind)
alloc_behind_master_bio(r1_bio, bio);
mddev->bitmap_ops->startwrite(
mddev, r1_bio->sector, r1_bio->sectors,
test_bit(R1BIO_BehindIO, &r1_bio->state));
if (test_bit(R1BIO_BehindIO, &r1_bio->state))
mddev->bitmap_ops->start_behind_write(mddev);
mddev->bitmap_ops->startwrite(mddev, r1_bio->sector,
r1_bio->sectors);
first_clone = 0;
}