diff options
Diffstat (limited to 'drivers/block/xen-blkfront.c')
| -rw-r--r-- | drivers/block/xen-blkfront.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index ab735a605cf..3ff06f475ee 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -41,7 +41,7 @@ #include <linux/cdrom.h> #include <linux/module.h> #include <linux/slab.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/scatterlist.h> #include <xen/xen.h> @@ -69,6 +69,7 @@ struct blk_shadow { unsigned long frame[BLKIF_MAX_SEGMENTS_PER_REQUEST]; }; +static DEFINE_MUTEX(blkfront_mutex); static const struct block_device_operations xlvbd_block_fops; #define BLK_RING_SIZE __RING_SIZE((struct blkif_sring *)0, PAGE_SIZE) @@ -1201,7 +1202,7 @@ static int blkif_open(struct block_device *bdev, fmode_t mode) struct blkfront_info *info; int err = 0; - lock_kernel(); + mutex_lock(&blkfront_mutex); info = disk->private_data; if (!info) { @@ -1219,7 +1220,7 @@ static int blkif_open(struct block_device *bdev, fmode_t mode) mutex_unlock(&info->mutex); out: - unlock_kernel(); + mutex_unlock(&blkfront_mutex); return err; } @@ -1229,7 +1230,7 @@ static int blkif_release(struct gendisk *disk, fmode_t mode) struct block_device *bdev; struct xenbus_device *xbdev; - lock_kernel(); + mutex_lock(&blkfront_mutex); bdev = bdget_disk(disk, 0); bdput(bdev); @@ -1263,7 +1264,7 @@ static int blkif_release(struct gendisk *disk, fmode_t mode) } out: - unlock_kernel(); + mutex_unlock(&blkfront_mutex); return 0; } |