X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=drivers%2Fmd%2Fraid1.c;h=16775a0df7f6dbedb1648fc45793521557be3b5b;hb=cf7a44168d743ca97863b7f34ed42a45fd7b5ab0;hp=00c78b77b13d8a002831fb9cb9b2543af4d4462e;hpb=6dfce901a450534d046b7950682243d5fb665783;p=linux-2.6-omap-h63xx.git diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 00c78b77b13..16775a0df7f 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -238,7 +238,7 @@ static void raid_end_bio_io(r1bio_t *r1_bio) (unsigned long long) bio->bi_sector + (bio->bi_size >> 9) - 1); - bio_endio(bio, bio->bi_size, + bio_endio(bio, test_bit(R1BIO_Uptodate, &r1_bio->state) ? 0 : -EIO); } free_r1bio(r1_bio); @@ -255,16 +255,13 @@ static inline void update_head_pos(int disk, r1bio_t *r1_bio) r1_bio->sector + (r1_bio->sectors); } -static int raid1_end_read_request(struct bio *bio, unsigned int bytes_done, int error) +static void raid1_end_read_request(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private); int mirror; conf_t *conf = mddev_to_conf(r1_bio->mddev); - if (bio->bi_size) - return 1; - mirror = r1_bio->read_disk; /* * this branch is our 'one mirror IO has finished' event handler: @@ -301,10 +298,9 @@ static int raid1_end_read_request(struct bio *bio, unsigned int bytes_done, int } rdev_dec_pending(conf->mirrors[mirror].rdev, conf->mddev); - return 0; } -static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int error) +static void raid1_end_write_request(struct bio *bio, int error) { int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private); @@ -312,8 +308,6 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int conf_t *conf = mddev_to_conf(r1_bio->mddev); struct bio *to_put = NULL; - if (bio->bi_size) - return 1; for (mirror = 0; mirror < conf->raid_disks; mirror++) if (r1_bio->bios[mirror] == bio) @@ -366,7 +360,7 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int (unsigned long long) mbio->bi_sector, (unsigned long long) mbio->bi_sector + (mbio->bi_size >> 9) - 1); - bio_endio(mbio, mbio->bi_size, 0); + bio_endio(mbio, 0); } } } @@ -400,8 +394,6 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int if (to_put) bio_put(to_put); - - return 0; } @@ -552,7 +544,7 @@ 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(); @@ -567,7 +559,7 @@ static void unplug_slaves(mddev_t *mddev) rcu_read_unlock(); } -static void raid1_unplug(request_queue_t *q) +static void raid1_unplug(struct request_queue *q) { mddev_t *mddev = q->queuedata; @@ -575,36 +567,6 @@ static void raid1_unplug(request_queue_t *q) md_wakeup_thread(mddev->thread); } -static int raid1_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 raid1_congested(void *data, int bits) { mddev_t *mddev = data; @@ -615,7 +577,7 @@ static int raid1_congested(void *data, int bits) for (i = 0; i < mddev->raid_disks; 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); /* Note the '|| 1' - when read_balance prefers * non-congested targets, it can be removed @@ -765,7 +727,7 @@ do_sync_io: return NULL; } -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); @@ -796,7 +758,7 @@ static int make_request(request_queue_t *q, struct bio * bio) if (unlikely(!mddev->barriers_work && bio_barrier(bio))) { if (rw == WRITE) md_write_end(mddev); - bio_endio(bio, bio->bi_size, -EOPNOTSUPP); + bio_endio(bio, -EOPNOTSUPP); return 0; } @@ -1137,14 +1099,11 @@ 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) { r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private); int i; - if (bio->bi_size) - return 1; - for (i=r1_bio->mddev->raid_disks; i--; ) if (r1_bio->bios[i] == bio) break; @@ -1160,10 +1119,9 @@ static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error) if (atomic_dec_and_test(&r1_bio->remaining)) reschedule_retry(r1_bio); - 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); r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private); @@ -1172,9 +1130,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) int i; int mirror=0; - if (bio->bi_size) - return 1; - for (i = 0; i < conf->raid_disks; i++) if (r1_bio->bios[i] == bio) { mirror = i; @@ -1200,7 +1155,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) md_done_sync(mddev, r1_bio->sectors, uptodate); put_buf(r1_bio); } - return 0; } static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio) @@ -1260,7 +1214,8 @@ static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio) j = 0; if (j >= 0) mddev->resync_mismatches += r1_bio->sectors; - if (j < 0 || test_bit(MD_RECOVERY_CHECK, &mddev->recovery)) { + if (j < 0 || (test_bit(MD_RECOVERY_CHECK, &mddev->recovery) + && test_bit(BIO_UPTODATE, &sbio->bi_flags))) { sbio->bi_end_io = NULL; rdev_dec_pending(conf->mirrors[i].rdev, mddev); } else { @@ -1972,7 +1927,8 @@ static int run(mddev_t *mddev) !test_bit(In_sync, &disk->rdev->flags)) { disk->head_position = 0; mddev->degraded++; - conf->fullsync = 1; + if (disk->rdev) + conf->fullsync = 1; } } if (mddev->degraded == conf->raid_disks) { @@ -2012,7 +1968,6 @@ static int run(mddev_t *mddev) mddev->array_size = mddev->size; mddev->queue->unplug_fn = raid1_unplug; - mddev->queue->issue_flush_fn = raid1_issue_flush; mddev->queue->backing_dev_info.congested_fn = raid1_congested; mddev->queue->backing_dev_info.congested_data = mddev; @@ -2153,11 +2108,25 @@ static int raid1_reshape(mddev_t *mddev) oldpool = conf->r1bio_pool; conf->r1bio_pool = newpool; - for (d=d2=0; d < conf->raid_disks; d++) - if (conf->mirrors[d].rdev) { - conf->mirrors[d].rdev->raid_disk = d2; - newmirrors[d2++].rdev = conf->mirrors[d].rdev; + for (d = d2 = 0; d < conf->raid_disks; d++) { + mdk_rdev_t *rdev = conf->mirrors[d].rdev; + if (rdev && rdev->raid_disk != d2) { + char nm[20]; + sprintf(nm, "rd%d", rdev->raid_disk); + sysfs_remove_link(&mddev->kobj, nm); + rdev->raid_disk = d2; + sprintf(nm, "rd%d", rdev->raid_disk); + sysfs_remove_link(&mddev->kobj, nm); + if (sysfs_create_link(&mddev->kobj, + &rdev->kobj, nm)) + printk(KERN_WARNING + "md/raid1: cannot register " + "%s for %s\n", + nm, mdname(mddev)); } + if (rdev) + newmirrors[d2++].rdev = rdev; + } kfree(conf->mirrors); conf->mirrors = newmirrors; kfree(conf->poolinfo);