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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2012-01-20 16:15:26 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-03-20 12:52:41 +0100 |
| commit | 34ae2e47d97216d8c66a1c5dff5b530c29b746b8 (patch) | |
| tree | 0e155e534ec47258522800ab36b609fbaadf550c /drivers/block/xen-blkfront.c | |
| parent | xen/blkback: Enable blkback on HVM guests (diff) | |
| download | linux-34ae2e47d97216d8c66a1c5dff5b530c29b746b8.tar.xz linux-34ae2e47d97216d8c66a1c5dff5b530c29b746b8.zip | |
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.c | 7 |
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); } |