diff options
| -rw-r--r-- | block/blk-barrier.c | 4 | ||||
| -rw-r--r-- | block/blk-core.c | 44 |
2 files changed, 13 insertions, 35 deletions
diff --git a/block/blk-barrier.c b/block/blk-barrier.c index 1d7adc72c95d..43d479a1e664 100644 --- a/block/blk-barrier.c +++ b/block/blk-barrier.c @@ -216,8 +216,8 @@ int blk_do_ordered(struct request_queue *q, struct request **rqp) return 1; } else { /* - * This can happen when the queue switches to - * ORDERED_NONE while this request is on it. + * Queue ordering not supported. Terminate + * with prejudice. */ elv_dequeue_request(q, rq); if (__blk_end_request(rq, -EOPNOTSUPP, diff --git a/block/blk-core.c b/block/blk-core.c index 2fdcd0cff57f..b1fd4f5f07d3 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1139,7 +1139,7 @@ void init_request_from_bio(struct request *req, struct bio *bio) static int __make_request(struct request_queue *q, struct bio *bio) { struct request *req; - int el_ret, nr_sectors, barrier, discard, err; + int el_ret, nr_sectors; const unsigned short prio = bio_prio(bio); const int sync = bio_sync(bio); int rw_flags; @@ -1153,22 +1153,9 @@ static int __make_request(struct request_queue *q, struct bio *bio) */ blk_queue_bounce(q, &bio); - barrier = bio_barrier(bio); - if (unlikely(barrier) && bio_has_data(bio) && - (q->next_ordered == QUEUE_ORDERED_NONE)) { - err = -EOPNOTSUPP; - goto end_io; - } - - discard = bio_discard(bio); - if (unlikely(discard) && !q->prepare_discard_fn) { - err = -EOPNOTSUPP; - goto end_io; - } - spin_lock_irq(q->queue_lock); - if (unlikely(barrier) || elv_queue_empty(q)) + if (unlikely(bio_barrier(bio)) || elv_queue_empty(q)) goto get_rq; el_ret = elv_merge(q, &req, bio); @@ -1262,10 +1249,6 @@ out: __generic_unplug_device(q); spin_unlock_irq(q->queue_lock); return 0; - -end_io: - bio_endio(bio, err); - return 0; } /* @@ -1418,15 +1401,13 @@ static inline void __generic_make_request(struct bio *bio) char b[BDEVNAME_SIZE]; q = bdev_get_queue(bio->bi_bdev); - if (!q) { + if (unlikely(!q)) { printk(KERN_ERR "generic_make_request: Trying to access " "nonexistent block-device %s (%Lu)\n", bdevname(bio->bi_bdev, b), (long long) bio->bi_sector); -end_io: - bio_endio(bio, err); - break; + goto end_io; } if (unlikely(nr_sectors > q->max_hw_sectors)) { @@ -1463,14 +1444,19 @@ end_io: if (bio_check_eod(bio, nr_sectors)) goto end_io; - if ((bio_empty_barrier(bio) && !q->prepare_flush_fn) || - (bio_discard(bio) && !q->prepare_discard_fn)) { + + if (bio_discard(bio) && !q->prepare_discard_fn) { err = -EOPNOTSUPP; goto end_io; } ret = q->make_request_fn(q, bio); } while (ret); + + return; + +end_io: + bio_endio(bio, err); } /* @@ -1720,14 +1706,6 @@ static int __end_that_request_first(struct request *req, int error, while ((bio = req->bio) != NULL) { int nbytes; - /* - * For an empty barrier request, the low level driver must - * store a potential error location in ->sector. We pass - * that back up in ->bi_sector. - */ - if (blk_empty_barrier(req)) - bio->bi_sector = req->sector; - if (nr_bytes >= bio->bi_size) { req->bio = bio->bi_next; nbytes = bio->bi_size; |