diff options
| author | Andre Noll <maan@systemlinux.org> | 2009-01-09 08:31:06 +1100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2009-01-09 08:31:06 +1100 |
| commit | 1b7fdf8ff7c0e3fba9c679def4e98d5701d2949e (patch) | |
| tree | c24c3a5f0c5f36a2af9b2a860074995b18537d06 /drivers/md/raid0.c | |
| parent | 0c3573f19d135d718264e38c46597295bd6154b7 (diff) | |
| download | blackbird-op-linux-1b7fdf8ff7c0e3fba9c679def4e98d5701d2949e.tar.gz blackbird-op-linux-1b7fdf8ff7c0e3fba9c679def4e98d5701d2949e.zip | |
md: raid0_make_request(): Replace chunksize_bits by chunksect_bits.
As ffz(~(2 * x)) = ffz(~x) + 1, we have
chunksect_bits = chunksize_bits + 1.
Fixup all users accordingly.
Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid0.c')
| -rw-r--r-- | drivers/md/raid0.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 8ac6488ad0dc..62a193c2a25e 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -387,7 +387,7 @@ static int raid0_stop (mddev_t *mddev) static int raid0_make_request (struct request_queue *q, struct bio *bio) { mddev_t *mddev = q->queuedata; - unsigned int sect_in_chunk, chunksize_bits, chunk_size, chunk_sects; + unsigned int sect_in_chunk, chunksect_bits, chunk_size, chunk_sects; raid0_conf_t *conf = mddev_to_conf(mddev); struct strip_zone *zone; mdk_rdev_t *tmp_dev; @@ -409,7 +409,7 @@ static int raid0_make_request (struct request_queue *q, struct bio *bio) chunk_size = mddev->chunk_size >> 10; chunk_sects = mddev->chunk_size >> 9; - chunksize_bits = ffz(~chunk_size); + chunksect_bits = ffz(~chunk_sects); block = bio->bi_sector >> 1; @@ -446,15 +446,15 @@ static int raid0_make_request (struct request_queue *q, struct bio *bio) { - sector_t x = (block - zone->zone_offset) >> chunksize_bits; + sector_t x = (block - zone->zone_offset) >> (chunksect_bits - 1); sector_div(x, zone->nb_dev); chunk = x; - x = block >> chunksize_bits; + x = block >> (chunksect_bits - 1); tmp_dev = zone->dev[sector_div(x, zone->nb_dev)]; } - rsect = (((chunk << chunksize_bits) + zone->dev_offset)<<1) + rsect = (((chunk << (chunksect_bits - 1)) + zone->dev_offset)<<1) + sect_in_chunk; bio->bi_bdev = tmp_dev->bdev; |
