md: raid0: remove ->sectors from the strip_zone structure.

storing ->sectors is redundant as is can be computed from the
difference  z->zone_end - (z-1)->zone_end

The one place where it is used, it is just as efficient to use
a zone_end value instead.

And removing it makes strip_zone smaller, so they array of these that
is searched on every request has a better chance to say in cache.

So discard the field and get the value from elsewhere.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/md/raid0.h b/drivers/md/raid0.h
index dbcf1da916b7..124ba34c8eed 100644
--- a/drivers/md/raid0.h
+++ b/drivers/md/raid0.h
@@ -5,7 +5,6 @@ struct strip_zone
 {
         sector_t zone_end;      /* Start of the next zone (in sectors) */
         sector_t dev_start;     /* Zone offset in real dev (in sectors) */
-        sector_t sectors;       /* Zone size in sectors */
         int nb_dev;             /* # of devices attached to the zone */
         mdk_rdev_t **dev;       /* Devices attached to the zone */
 };