diff options
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/raid10.c | 38 |
1 files changed, 20 insertions, 18 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index a9401c017e3..82249a69014 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -429,7 +429,7 @@ static sector_t raid10_find_virt(conf_t *conf, sector_t sector, int dev) if (dev < 0) dev += conf->raid_disks; } else { - while (sector > conf->stride) { + while (sector >= conf->stride) { sector -= conf->stride; if (dev < conf->near_copies) dev += conf->raid_disks - conf->near_copies; @@ -1801,6 +1801,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i for (k=0; k<conf->copies; k++) if (r10_bio->devs[k].devnum == i) break; + BUG_ON(k == conf->copies); bio = r10_bio->devs[1].bio; bio->bi_next = biolist; biolist = bio; @@ -2021,19 +2022,30 @@ static int run(mddev_t *mddev) if (!conf->tmppage) goto out_free_conf; + conf->mddev = mddev; + conf->raid_disks = mddev->raid_disks; conf->near_copies = nc; conf->far_copies = fc; conf->copies = nc*fc; conf->far_offset = fo; conf->chunk_mask = (sector_t)(mddev->chunk_size>>9)-1; conf->chunk_shift = ffz(~mddev->chunk_size) - 9; + size = mddev->size >> (conf->chunk_shift-1); + sector_div(size, fc); + size = size * conf->raid_disks; + sector_div(size, nc); + /* 'size' is now the number of chunks in the array */ + /* calculate "used chunks per device" in 'stride' */ + stride = size * conf->copies; + sector_div(stride, conf->raid_disks); + mddev->size = stride << (conf->chunk_shift-1); + if (fo) - conf->stride = 1 << conf->chunk_shift; - else { - stride = mddev->size >> (conf->chunk_shift-1); + stride = 1; + else sector_div(stride, fc); - conf->stride = stride << conf->chunk_shift; - } + conf->stride = stride << conf->chunk_shift; + conf->r10bio_pool = mempool_create(NR_RAID10_BIOS, r10bio_pool_alloc, r10bio_pool_free, conf); if (!conf->r10bio_pool) { @@ -2063,8 +2075,6 @@ static int run(mddev_t *mddev) disk->head_position = 0; } - conf->raid_disks = mddev->raid_disks; - conf->mddev = mddev; spin_lock_init(&conf->device_lock); INIT_LIST_HEAD(&conf->retry_list); @@ -2106,16 +2116,8 @@ static int run(mddev_t *mddev) /* * Ok, everything is just fine now */ - if (conf->far_offset) { - size = mddev->size >> (conf->chunk_shift-1); - size *= conf->raid_disks; - size <<= conf->chunk_shift; - sector_div(size, conf->far_copies); - } else - size = conf->stride * conf->raid_disks; - sector_div(size, conf->near_copies); - mddev->array_size = size/2; - mddev->resync_max_sectors = size; + mddev->array_size = size << (conf->chunk_shift-1); + mddev->resync_max_sectors = size << conf->chunk_shift; mddev->queue->unplug_fn = raid10_unplug; mddev->queue->issue_flush_fn = raid10_issue_flush; |