From 34ae2e47d97216d8c66a1c5dff5b530c29b746b8 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Sat, 21 Jan 2012 00:15:26 +0900 Subject: [PATCH] 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 Cc: Jeremy Fitzhardinge Cc: Konrad Rzeszutek Wilk Cc: xen-devel@lists.xensource.com Cc: virtualization@lists.linux-foundation.org Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkfront.c | 7 +++---- 1 file 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 #include #include +#include #include #include @@ -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); } -- 2.39.5