diff options
Diffstat (limited to 'drivers/s390/block')
| -rw-r--r-- | drivers/s390/block/dasd.c | 8 | ||||
| -rw-r--r-- | drivers/s390/block/dcssblk.c | 5 |
2 files changed, 12 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 33975e9..1a84fae 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -21,6 +21,7 @@ #include <linux/hdreg.h> #include <linux/async.h> #include <linux/mutex.h> +#include <linux/smp_lock.h> #include <asm/ccwdev.h> #include <asm/ebcdic.h> @@ -2196,7 +2197,7 @@ static void dasd_setup_queue(struct dasd_block *block) */ blk_queue_max_segment_size(block->request_queue, PAGE_SIZE); blk_queue_segment_boundary(block->request_queue, PAGE_SIZE - 1); - blk_queue_ordered(block->request_queue, QUEUE_ORDERED_DRAIN, NULL); + blk_queue_ordered(block->request_queue, QUEUE_ORDERED_DRAIN); } /* @@ -2235,6 +2236,7 @@ static int dasd_open(struct block_device *bdev, fmode_t mode) if (!block) return -ENODEV; + lock_kernel(); base = block->base; atomic_inc(&block->open_count); if (test_bit(DASD_FLAG_OFFLINE, &base->flags)) { @@ -2269,12 +2271,14 @@ static int dasd_open(struct block_device *bdev, fmode_t mode) goto out; } + unlock_kernel(); return 0; out: module_put(base->discipline->owner); unlock: atomic_dec(&block->open_count); + unlock_kernel(); return rc; } @@ -2282,8 +2286,10 @@ static int dasd_release(struct gendisk *disk, fmode_t mode) { struct dasd_block *block = disk->private_data; + lock_kernel(); atomic_dec(&block->open_count); module_put(block->base->discipline->owner); + unlock_kernel(); return 0; } diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 9b43ae9..2bd72aa 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -14,6 +14,7 @@ #include <linux/init.h> #include <linux/slab.h> #include <linux/blkdev.h> +#include <linux/smp_lock.h> #include <linux/completion.h> #include <linux/interrupt.h> #include <linux/platform_device.h> @@ -775,6 +776,7 @@ dcssblk_open(struct block_device *bdev, fmode_t mode) struct dcssblk_dev_info *dev_info; int rc; + lock_kernel(); dev_info = bdev->bd_disk->private_data; if (NULL == dev_info) { rc = -ENODEV; @@ -784,6 +786,7 @@ dcssblk_open(struct block_device *bdev, fmode_t mode) bdev->bd_block_size = 4096; rc = 0; out: + unlock_kernel(); return rc; } @@ -794,6 +797,7 @@ dcssblk_release(struct gendisk *disk, fmode_t mode) struct segment_info *entry; int rc; + lock_kernel(); if (!dev_info) { rc = -ENODEV; goto out; @@ -811,6 +815,7 @@ dcssblk_release(struct gendisk *disk, fmode_t mode) up_write(&dcssblk_devices_sem); rc = 0; out: + unlock_kernel(); return rc; } |