summaryrefslogtreecommitdiff
path: root/drivers/block/xen-blkfront.c
diff options
context:
space:
mode:
authorAkinobu Mita <akinobu.mita@gmail.com>2012-01-21 00:15:26 +0900
committerJens Axboe <axboe@kernel.dk>2012-03-20 12:52:41 +0100
commit34ae2e47d97216d8c66a1c5dff5b530c29b746b8 (patch)
tree0e155e534ec47258522800ab36b609fbaadf550c /drivers/block/xen-blkfront.c
parentb2167ba6dd89d55ced26a867fad8f0fe388fd595 (diff)
xen-blkfront: use bitmap_set() and bitmap_clear()
Use bitmap_set and bitmap_clear rather than modifying individual bits in a memory region. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: xen-devel@lists.xensource.com Cc: virtualization@lists.linux-foundation.org Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/block/xen-blkfront.c')
-rw-r--r--drivers/block/xen-blkfront.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 2f22874c0a37..619868d91ca8 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -43,6 +43,7 @@
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/scatterlist.h>
+#include <linux/bitmap.h>
#include <xen/xen.h>
#include <xen/xenbus.h>
@@ -177,8 +178,7 @@ static int xlbd_reserve_minors(unsigned int minor, unsigned int nr)
spin_lock(&minor_lock);
if (find_next_bit(minors, end, minor) >= end) {
- for (; minor < end; ++minor)
- __set_bit(minor, minors);
+ bitmap_set(minors, minor, nr);
rc = 0;
} else
rc = -EBUSY;
@@ -193,8 +193,7 @@ static void xlbd_release_minors(unsigned int minor, unsigned int nr)
BUG_ON(end > nr_minors);
spin_lock(&minor_lock);
- for (; minor < end; ++minor)
- __clear_bit(minor, minors);
+ bitmap_clear(minors, minor, nr);
spin_unlock(&minor_lock);
}