block: nr_phys_segments needs to be zero for REQ_OP_WRITE_ZEROES

Fix a regression introduced when removing bi_phys_segments for Write Zeroes requests, which need to have a segment count of zero, as they don't have a payload. Fixes: 14ccb66 ("block: remove the bi_phys_segments field in struct bio") Reported-by: Jens Axboe <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
adn770 · Jul 3, 2019 · d665e12 · d665e12
1 parent 970d168
commit d665e12
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/block/blk-merge.c b/block/blk-merge.c
@@ -105,7 +105,7 @@ static struct bio *blk_bio_discard_split(struct request_queue *q,
 static struct bio *blk_bio_write_zeroes_split(struct request_queue *q,
 		struct bio *bio, struct bio_set *bs, unsigned *nsegs)
 {
-	*nsegs = 1;
+	*nsegs = 0;
 
 	if (!q->limits.max_write_zeroes_sectors)
 		return NULL;