diff options
| -rw-r--r-- | drivers/md/raid0.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index d8438494e9d..fd65d8806c0 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -392,7 +392,7 @@ static int raid0_make_request (struct request_queue *q, struct bio *bio) struct strip_zone *zone; mdk_rdev_t *tmp_dev; sector_t chunk; - sector_t block, rsect; + sector_t sector, rsect; const int rw = bio_data_dir(bio); int cpu; @@ -409,8 +409,7 @@ static int raid0_make_request (struct request_queue *q, struct bio *bio) chunk_sects = mddev->chunk_size >> 9; chunksect_bits = ffz(~chunk_sects); - block = bio->bi_sector >> 1; - + sector = bio->bi_sector; if (unlikely(chunk_sects < (bio->bi_sector & (chunk_sects - 1)) + (bio->bi_size >> 9))) { struct bio_pair *bp; @@ -433,24 +432,24 @@ static int raid0_make_request (struct request_queue *q, struct bio *bio) { - sector_t x = block >> conf->preshift; + sector_t x = sector >> (conf->preshift + 1); sector_div(x, (u32)conf->hash_spacing); zone = conf->hash_table[x]; } - while (block >= (zone->zone_offset + zone->size)) + while (sector / 2 >= (zone->zone_offset + zone->size)) zone++; sect_in_chunk = bio->bi_sector & (chunk_sects - 1); { - sector_t x = (block - zone->zone_offset) >> (chunksect_bits - 1); + sector_t x = (sector - zone->zone_offset * 2) >> chunksect_bits; sector_div(x, zone->nb_dev); chunk = x; - x = block >> (chunksect_bits - 1); + x = sector >> chunksect_bits; tmp_dev = zone->dev[sector_div(x, zone->nb_dev)]; } rsect = (((chunk << (chunksect_bits - 1)) + zone->dev_offset)<<1) |