s390/block: kill the big kernel lock

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / s390 / block / dasd.c

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 8373ca0..38e6fa9 100644 (file)
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -21,7 +21,6 @@
 #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>
@@ -2236,7 +2235,6 @@ 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)) {
@@ -2271,14 +2269,12 @@ 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;
 }
 
@@ -2286,10 +2282,8 @@ 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;
 }