X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fmd%2Fraid10.c;h=5cdcc938620050b39fb30593565847859d6ad1a4;hb=2ad8b1ef11c98c5603580878aebf9f1bc74129e4;hp=a95ada1cfac4ad88e4a3d6912d90a4162fd4fb21;hpb=99e1221d1a1edac316f7f8116c781f75733b1159;p=powerpc.git diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index a95ada1cfa..5cdcc93862 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -227,7 +227,7 @@ static void raid_end_bio_io(r10bio_t *r10_bio) { struct bio *bio = r10_bio->master_bio; - bio_endio(bio, bio->bi_size, + bio_endio(bio, test_bit(R10BIO_Uptodate, &r10_bio->state) ? 0 : -EIO); free_r10bio(r10_bio); } @@ -243,15 +243,13 @@ static inline void update_head_pos(int slot, r10bio_t *r10_bio) r10_bio->devs[slot].addr + (r10_bio->sectors); } -static int raid10_end_read_request(struct bio *bio, unsigned int bytes_done, int error) +static void raid10_end_read_request(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private); int slot, dev; conf_t *conf = mddev_to_conf(r10_bio->mddev); - if (bio->bi_size) - return 1; slot = r10_bio->read_slot; dev = r10_bio->devs[slot].devnum; @@ -284,19 +282,15 @@ static int raid10_end_read_request(struct bio *bio, unsigned int bytes_done, int } rdev_dec_pending(conf->mirrors[dev].rdev, conf->mddev); - return 0; } -static int raid10_end_write_request(struct bio *bio, unsigned int bytes_done, int error) +static void raid10_end_write_request(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private); int slot, dev; conf_t *conf = mddev_to_conf(r10_bio->mddev); - if (bio->bi_size) - return 1; - for (slot = 0; slot < conf->copies; slot++) if (r10_bio->devs[slot].bio == bio) break; @@ -339,7 +333,6 @@ static int raid10_end_write_request(struct bio *bio, unsigned int bytes_done, in } rdev_dec_pending(conf->mirrors[dev].rdev, conf->mddev); - return 0; } @@ -453,7 +446,7 @@ static sector_t raid10_find_virt(conf_t *conf, sector_t sector, int dev) * If near_copies == raid_disk, there are no striping issues, * but in that case, the function isn't called at all. */ -static int raid10_mergeable_bvec(request_queue_t *q, struct bio *bio, +static int raid10_mergeable_bvec(struct request_queue *q, struct bio *bio, struct bio_vec *bio_vec) { mddev_t *mddev = q->queuedata; @@ -595,13 +588,12 @@ static void unplug_slaves(mddev_t *mddev) for (i=0; iraid_disks; i++) { mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev); if (rdev && !test_bit(Faulty, &rdev->flags) && atomic_read(&rdev->nr_pending)) { - request_queue_t *r_queue = bdev_get_queue(rdev->bdev); + struct request_queue *r_queue = bdev_get_queue(rdev->bdev); atomic_inc(&rdev->nr_pending); rcu_read_unlock(); - if (r_queue->unplug_fn) - r_queue->unplug_fn(r_queue); + blk_unplug(r_queue); rdev_dec_pending(rdev, mddev); rcu_read_lock(); @@ -610,7 +602,7 @@ static void unplug_slaves(mddev_t *mddev) rcu_read_unlock(); } -static void raid10_unplug(request_queue_t *q) +static void raid10_unplug(struct request_queue *q) { mddev_t *mddev = q->queuedata; @@ -618,36 +610,6 @@ static void raid10_unplug(request_queue_t *q) md_wakeup_thread(mddev->thread); } -static int raid10_issue_flush(request_queue_t *q, struct gendisk *disk, - sector_t *error_sector) -{ - mddev_t *mddev = q->queuedata; - conf_t *conf = mddev_to_conf(mddev); - int i, ret = 0; - - rcu_read_lock(); - for (i=0; iraid_disks && ret == 0; i++) { - mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev); - if (rdev && !test_bit(Faulty, &rdev->flags)) { - struct block_device *bdev = rdev->bdev; - request_queue_t *r_queue = bdev_get_queue(bdev); - - if (!r_queue->issue_flush_fn) - ret = -EOPNOTSUPP; - else { - atomic_inc(&rdev->nr_pending); - rcu_read_unlock(); - ret = r_queue->issue_flush_fn(r_queue, bdev->bd_disk, - error_sector); - rdev_dec_pending(rdev, mddev); - rcu_read_lock(); - } - } - } - rcu_read_unlock(); - return ret; -} - static int raid10_congested(void *data, int bits) { mddev_t *mddev = data; @@ -658,7 +620,7 @@ static int raid10_congested(void *data, int bits) for (i = 0; i < mddev->raid_disks && ret == 0; i++) { mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev); if (rdev && !test_bit(Faulty, &rdev->flags)) { - request_queue_t *q = bdev_get_queue(rdev->bdev); + struct request_queue *q = bdev_get_queue(rdev->bdev); ret |= bdi_congested(&q->backing_dev_info, bits); } @@ -772,7 +734,7 @@ static void unfreeze_array(conf_t *conf) spin_unlock_irq(&conf->resync_lock); } -static int make_request(request_queue_t *q, struct bio * bio) +static int make_request(struct request_queue *q, struct bio * bio) { mddev_t *mddev = q->queuedata; conf_t *conf = mddev_to_conf(mddev); @@ -787,7 +749,7 @@ static int make_request(request_queue_t *q, struct bio * bio) unsigned long flags; if (unlikely(bio_barrier(bio))) { - bio_endio(bio, bio->bi_size, -EOPNOTSUPP); + bio_endio(bio, -EOPNOTSUPP); return 0; } @@ -819,7 +781,7 @@ static int make_request(request_queue_t *q, struct bio * bio) " or bigger than %dk %llu %d\n", chunk_sects/2, (unsigned long long)bio->bi_sector, bio->bi_size >> 10); - bio_io_error(bio, bio->bi_size); + bio_io_error(bio); return 0; } @@ -917,6 +879,13 @@ static int make_request(request_queue_t *q, struct bio * bio) bio_list_add(&bl, mbio); } + if (unlikely(!atomic_read(&r10_bio->remaining))) { + /* the array is dead */ + md_write_end(mddev); + raid_end_bio_io(r10_bio); + return 0; + } + bitmap_startwrite(mddev->bitmap, bio->bi_sector, r10_bio->sectors, 0); spin_lock_irqsave(&conf->device_lock, flags); bio_list_merge(&conf->pending_bio_list, &bl); @@ -1148,15 +1117,12 @@ abort: } -static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error) +static void end_sync_read(struct bio *bio, int error) { r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private); conf_t *conf = mddev_to_conf(r10_bio->mddev); int i,d; - if (bio->bi_size) - return 1; - for (i=0; icopies; i++) if (r10_bio->devs[i].bio == bio) break; @@ -1185,10 +1151,9 @@ static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error) reschedule_retry(r10_bio); } rdev_dec_pending(conf->mirrors[d].rdev, conf->mddev); - return 0; } -static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) +static void end_sync_write(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private); @@ -1196,9 +1161,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) conf_t *conf = mddev_to_conf(mddev); int i,d; - if (bio->bi_size) - return 1; - for (i = 0; i < conf->copies; i++) if (r10_bio->devs[i].bio == bio) break; @@ -1221,7 +1183,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) } } rdev_dec_pending(conf->mirrors[d].rdev, mddev); - return 0; } /* @@ -1367,7 +1328,7 @@ static void recovery_request_write(mddev_t *mddev, r10bio_t *r10_bio) if (test_bit(R10BIO_Uptodate, &r10_bio->state)) generic_make_request(wbio); else - bio_endio(wbio, wbio->bi_size, -EIO); + bio_endio(wbio, -EIO); } @@ -1557,7 +1518,6 @@ static void raid10d(mddev_t *mddev) bio = r10_bio->devs[r10_bio->read_slot].bio; r10_bio->devs[r10_bio->read_slot].bio = mddev->ro ? IO_BLOCKED : NULL; - bio_put(bio); mirror = read_balance(conf, r10_bio); if (mirror == -1) { printk(KERN_ALERT "raid10: %s: unrecoverable I/O" @@ -1565,8 +1525,10 @@ static void raid10d(mddev_t *mddev) bdevname(bio->bi_bdev,b), (unsigned long long)r10_bio->sector); raid_end_bio_io(r10_bio); + bio_put(bio); } else { const int do_sync = bio_sync(r10_bio->master_bio); + bio_put(bio); rdev = conf->mirrors[mirror].rdev; if (printk_ratelimit()) printk(KERN_ERR "raid10: %s: redirecting sector %llu to" @@ -2125,7 +2087,6 @@ static int run(mddev_t *mddev) mddev->resync_max_sectors = size << conf->chunk_shift; mddev->queue->unplug_fn = raid10_unplug; - mddev->queue->issue_flush_fn = raid10_issue_flush; mddev->queue->backing_dev_info.congested_fn = raid10_congested; mddev->queue->backing_dev_info.congested_data = mddev;