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md/raid10: split reshape bios before bitmap accounting

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Use the shared mddev_bio_split_at_reshape_offset() helper so RAID10
submits only one-side bios to llbitmap during reshape.

Tested-by: Mykola Marzhan <mykola@meshstor.io>
Link: https://patch.msgid.link/20260802195038.164272-26-yukuai@kernel.org
Signed-off-by: Yu Kuai <yukuai@fygo.io>
This commit is contained in:
Yu Kuai
2026-08-03 03:50:34 +08:00
parent b109d437db
commit aa648f26a9
1 changed files with 10 additions and 0 deletions
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10
drivers/md/raid10.c
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@@ -1848,6 +1848,7 @@ static bool raid10_make_request(struct mddev *mddev, struct bio *bio)
{
struct r10conf *conf = mddev->private;
sector_t chunk_mask = (conf->geo.chunk_mask & conf->prev.chunk_mask);
const int rw = bio_data_dir(bio);
int chunk_sects = chunk_mask + 1;
int sectors = bio_sectors(bio);
@@ -1873,6 +1874,15 @@ static bool raid10_make_request(struct mddev *mddev, struct bio *bio)
sectors = chunk_sects -
(bio->bi_iter.bi_sector &
(chunk_sects - 1));
bio = mddev_bio_split_at_reshape_offset(mddev, bio, &sectors,
&conf->bio_split);
if (!bio) {
if (rw == WRITE)
md_write_end(mddev);
return true;
}
if (!__make_request(mddev, bio, sectors))
md_write_end(mddev);