[PATCH] md: remove unnecessary variable x in stripe_to_pdidx()

Signed-off-by: Coywolf Qi Hunt <qiyong@freeforge.net>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 1c8ab34..46fd651 100644 (file)
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1351,10 +1351,9 @@ 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;