diff options
Diffstat (limited to 'drivers/md/raid1.c')
| -rw-r--r-- | drivers/md/raid1.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index c6a671f13bc0..b7d9651286d4 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1102,6 +1102,10 @@ static struct bio *alloc_behind_master_bio(struct r1bio *r1_bio, if (!behind_bio) goto fail; + /* discard op, we don't support writezero/writesame yet */ + if (!bio_has_data(bio)) + goto skip_copy; + while (i < vcnt && size) { struct page *page; int len = min_t(int, PAGE_SIZE, size); @@ -1118,7 +1122,7 @@ static struct bio *alloc_behind_master_bio(struct r1bio *r1_bio, bio_copy_data_partial(behind_bio, bio, offset, behind_bio->bi_iter.bi_size); - +skip_copy: r1_bio->behind_master_bio = behind_bio;; set_bit(R1BIO_BehindIO, &r1_bio->state); |