[PATCH v3 21/21] md/raid5: split reshape bios before bitmap accounting
Yu Kuai <[email protected]> Tue, 28 Jul 2026 16:49:21 +0800
| Newsgroups | org.kernel.vger.linux-raid,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <4444c934f36b1c902cccfef2c4a9c9a919ff1145.1785206690.git.yukuai@fygo.io> |
From: Yu Kuai <[email protected]> Use the shared mddev_bio_split_at_reshape_offset() helper so RAID5 submits only one-side bios to llbitmap during reshape. Signed-off-by: Yu Kuai <[email protected]> --- drivers/md/raid5.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index f70b2f611980..30e18ce7c0e3 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6184,6 +6184,14 @@ static bool raid5_make_request(struct mddev *mddev, struct bio * bi) return true; } + bi = mddev_bio_split_at_reshape_offset(mddev, bi, NULL, + &conf->bio_split); + if (!bi) { + if (rw == WRITE) + md_write_end(mddev); + return true; + } + logical_sector = bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); bi->bi_next = NULL; -- 2.51.0