diff options
| -rw-r--r-- | drivers/md/dm.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 557f3f52edf4..44be646574b7 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1321,6 +1321,7 @@ void dm_accept_partial_bio(struct bio *bio, unsigned int n_sectors) BUG_ON(dm_tio_flagged(tio, DM_TIO_IS_DUPLICATE_BIO)); BUG_ON(bio_sectors > *tio->len_ptr); BUG_ON(n_sectors > bio_sectors); + BUG_ON(bio->bi_opf & REQ_ATOMIC); if (static_branch_unlikely(&zoned_enabled) && unlikely(bdev_is_zoned(bio->bi_bdev))) { @@ -1735,8 +1736,12 @@ static blk_status_t __split_and_process_bio(struct clone_info *ci) ci->submit_as_polled = !!(ci->bio->bi_opf & REQ_POLLED); len = min_t(sector_t, max_io_len(ti, ci->sector), ci->sector_count); - if (ci->bio->bi_opf & REQ_ATOMIC && len != ci->sector_count) - return BLK_STS_IOERR; + if (ci->bio->bi_opf & REQ_ATOMIC) { + if (unlikely(!dm_target_supports_atomic_writes(ti->type))) + return BLK_STS_IOERR; + if (unlikely(len != ci->sector_count)) + return BLK_STS_IOERR; + } setup_split_accounting(ci, len); |