diff options
Diffstat (limited to 'drivers/md/dm-stripe.c')
| -rw-r--r-- | drivers/md/dm-stripe.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index 1f6316e..6931bd1 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -26,7 +26,6 @@ struct stripe { struct stripe_c { uint32_t stripes; int stripes_shift; - sector_t stripes_mask; /* The size of this target / num. stripes */ sector_t stripe_width; @@ -163,10 +162,8 @@ static int stripe_ctr(struct dm_target *ti, unsigned int argc, char **argv) if (stripes & (stripes - 1)) sc->stripes_shift = -1; - else { - sc->stripes_shift = ffs(stripes) - 1; - sc->stripes_mask = ((sector_t) stripes) - 1; - } + else + sc->stripes_shift = __ffs(stripes); ti->split_io = chunk_size; ti->num_flush_requests = stripes; @@ -218,7 +215,7 @@ static void stripe_map_sector(struct stripe_c *sc, sector_t sector, if (sc->stripes_shift < 0) *stripe = sector_div(chunk, sc->stripes); else { - *stripe = chunk & sc->stripes_mask; + *stripe = chunk & (sc->stripes - 1); chunk >>= sc->stripes_shift; } |
