[PATCH 004 of 4] md: Remove unnecessary variable x in stripe_to_pdidx().

[NeilBrown]

>From : Coywolf Qi Hunt <qiyong@xxxxxxxxxxxxx>

Signed-off-by: Coywolf Qi Hunt <qiyong@xxxxxxxxxxxxx>


Signed-off-by: Neil Brown <neilb@xxxxxxx>

### Diffstat output
 ./drivers/md/raid5.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff .prev/drivers/md/raid5.c ./drivers/md/raid5.c
--- .prev/drivers/md/raid5.c	2006-08-24 17:09:42.000000000 +1000
+++ ./drivers/md/raid5.c	2006-08-24 17:24:17.000000000 +1000
@@ -1350,10 +1350,9 @@ static int page_is_zero(struct page *p)
 static int stripe_to_pdidx(sector_t stripe, raid5_conf_t *conf, int disks)
 {
 	int sectors_per_chunk = conf->chunk_size >> 9;
-	sector_t x = stripe;
 	int pd_idx, dd_idx;
-	int chunk_offset = sector_div(x, sectors_per_chunk);
-	stripe = x;
+	int chunk_offset = sector_div(stripe, sectors_per_chunk);
+
 	raid5_compute_sector(stripe*(disks-1)*sectors_per_chunk
 			     + chunk_offset, disks, disks-1, &dd_idx, &pd_idx, conf);
 	return pd_idx;
-
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