diff options
Diffstat (limited to 'drivers/block/z2ram.c')
| -rw-r--r-- | drivers/block/z2ram.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c index d75b2bb601ad..dcd4cfcf4126 100644 --- a/drivers/block/z2ram.c +++ b/drivers/block/z2ram.c @@ -33,7 +33,7 @@ #include <linux/module.h> #include <linux/blkdev.h> #include <linux/bitops.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/slab.h> #include <asm/setup.h> @@ -57,6 +57,7 @@ extern struct mem_info m68k_memory[NUM_MEMINFO]; #define Z2RAM_CHUNK1024 ( Z2RAM_CHUNKSIZE >> 10 ) +static DEFINE_MUTEX(z2ram_mutex); static u_long *z2ram_map = NULL; static u_long z2ram_size = 0; static int z2_count = 0; @@ -154,7 +155,7 @@ static int z2_open(struct block_device *bdev, fmode_t mode) device = MINOR(bdev->bd_dev); - lock_kernel(); + mutex_lock(&z2ram_mutex); if ( current_device != -1 && current_device != device ) { rc = -EBUSY; @@ -296,25 +297,25 @@ static int z2_open(struct block_device *bdev, fmode_t mode) set_capacity(z2ram_gendisk, z2ram_size >> 9); } - unlock_kernel(); + mutex_unlock(&z2ram_mutex); return 0; err_out_kfree: kfree(z2ram_map); err_out: - unlock_kernel(); + mutex_unlock(&z2ram_mutex); return rc; } static int z2_release(struct gendisk *disk, fmode_t mode) { - lock_kernel(); + mutex_lock(&z2ram_mutex); if ( current_device == -1 ) { - unlock_kernel(); + mutex_unlock(&z2ram_mutex); return 0; } - unlock_kernel(); + mutex_unlock(&z2ram_mutex); /* * FIXME: unmap memory */ |