1 files changed, 6 insertions, 7 deletions

diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index d8438494e9db..fd65d8806c0f 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)