diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2010-05-31 22:38:40 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2010-09-26 16:25:51 +0200 |
| commit | cfdb00a77ea7d5fb922fd985e5dfbcb36873411b (patch) | |
| tree | d5b70c7edc95cad7271342214d3e4338f37e02c2 /drivers/s390/block/dcssblk.c | |
| parent | 54066a57c584ee8ce767053116fc4943ed1168b5 (diff) | |
| download | op-kernel-dev-cfdb00a77ea7d5fb922fd985e5dfbcb36873411b.zip op-kernel-dev-cfdb00a77ea7d5fb922fd985e5dfbcb36873411b.tar.gz | |
s390/block: kill the big kernel lock
The dasd and dcssblk drivers gained the big
kernel lock in the recent pushdown from the
block layer, but they don't really need it,
so remove the calls without a replacement.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Diffstat (limited to 'drivers/s390/block/dcssblk.c')
| -rw-r--r-- | drivers/s390/block/dcssblk.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 2bd72aa..9b43ae9 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -14,7 +14,6 @@ #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> @@ -776,7 +775,6 @@ 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; @@ -786,7 +784,6 @@ dcssblk_open(struct block_device *bdev, fmode_t mode) bdev->bd_block_size = 4096; rc = 0; out: - unlock_kernel(); return rc; } @@ -797,7 +794,6 @@ dcssblk_release(struct gendisk *disk, fmode_t mode) struct segment_info *entry; int rc; - lock_kernel(); if (!dev_info) { rc = -ENODEV; goto out; @@ -815,7 +811,6 @@ dcssblk_release(struct gendisk *disk, fmode_t mode) up_write(&dcssblk_devices_sem); rc = 0; out: - unlock_kernel(); return rc; } |
