diff options
author | Arnd Bergmann <arnd@arndb.de> | 2010-06-02 14:28:52 +0200 |
---|---|---|
committer | Arnd Bergmann <arnd@arndb.de> | 2010-10-05 15:01:10 +0200 |
commit | 2a48fc0ab24241755dc93bfd4f01d68efab47f5a (patch) | |
tree | fa9ae10ce89b26b7d8ae9ce24bdfda5e3007b763 /drivers/cdrom | |
parent | 613655fa39ff6957754fa8ceb8559980920eb8ee (diff) | |
download | lwn-2a48fc0ab24241755dc93bfd4f01d68efab47f5a.tar.gz lwn-2a48fc0ab24241755dc93bfd4f01d68efab47f5a.zip |
block: autoconvert trivial BKL users to private mutex
The block device drivers have all gained new lock_kernel
calls from a recent pushdown, and some of the drivers
were already using the BKL before.
This turns the BKL into a set of per-driver mutexes.
Still need to check whether this is safe to do.
file=$1
name=$2
if grep -q lock_kernel ${file} ; then
if grep -q 'include.*linux.mutex.h' ${file} ; then
sed -i '/include.*<linux\/smp_lock.h>/d' ${file}
else
sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file}
fi
sed -i ${file} \
-e "/^#include.*linux.mutex.h/,$ {
1,/^\(static\|int\|long\)/ {
/^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex);
} }" \
-e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \
-e '/[ ]*cycle_kernel_lock();/d'
else
sed -i -e '/include.*\<smp_lock.h\>/d' ${file} \
-e '/cycle_kernel_lock()/d'
fi
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/cdrom')
-rw-r--r-- | drivers/cdrom/gdrom.c | 15 | ||||
-rw-r--r-- | drivers/cdrom/viocd.c | 15 |
2 files changed, 16 insertions, 14 deletions
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c index 261107d1457c..3af6516919b7 100644 --- a/drivers/cdrom/gdrom.c +++ b/drivers/cdrom/gdrom.c @@ -34,7 +34,7 @@ #include <linux/blkdev.h> #include <linux/interrupt.h> #include <linux/device.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/wait.h> #include <linux/workqueue.h> #include <linux/platform_device.h> @@ -81,6 +81,7 @@ #define GDROM_DEFAULT_TIMEOUT (HZ * 7) +static DEFINE_MUTEX(gdrom_mutex); static const struct { int sense_key; const char * const text; @@ -494,17 +495,17 @@ static struct cdrom_device_ops gdrom_ops = { static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode) { int ret; - lock_kernel(); + mutex_lock(&gdrom_mutex); ret = cdrom_open(gd.cd_info, bdev, mode); - unlock_kernel(); + mutex_unlock(&gdrom_mutex); return ret; } static int gdrom_bdops_release(struct gendisk *disk, fmode_t mode) { - lock_kernel(); + mutex_lock(&gdrom_mutex); cdrom_release(gd.cd_info, mode); - unlock_kernel(); + mutex_unlock(&gdrom_mutex); return 0; } @@ -518,9 +519,9 @@ static int gdrom_bdops_ioctl(struct block_device *bdev, fmode_t mode, { int ret; - lock_kernel(); + mutex_lock(&gdrom_mutex); ret = cdrom_ioctl(gd.cd_info, bdev, mode, cmd, arg); - unlock_kernel(); + mutex_unlock(&gdrom_mutex); return ret; } diff --git a/drivers/cdrom/viocd.c b/drivers/cdrom/viocd.c index 56bf9f44700c..be73a9b493a6 100644 --- a/drivers/cdrom/viocd.c +++ b/drivers/cdrom/viocd.c @@ -42,7 +42,7 @@ #include <linux/module.h> #include <linux/completion.h> #include <linux/proc_fs.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/seq_file.h> #include <linux/scatterlist.h> @@ -61,6 +61,7 @@ */ #define VIOCD_MAX_CD HVMAXARCHITECTEDVIRTUALCDROMS +static DEFINE_MUTEX(viocd_mutex); static const struct vio_error_entry viocd_err_table[] = { {0x0201, EINVAL, "Invalid Range"}, {0x0202, EINVAL, "Invalid Token"}, @@ -156,9 +157,9 @@ static int viocd_blk_open(struct block_device *bdev, fmode_t mode) struct disk_info *di = bdev->bd_disk->private_data; int ret; - lock_kernel(); + mutex_lock(&viocd_mutex); ret = cdrom_open(&di->viocd_info, bdev, mode); - unlock_kernel(); + mutex_unlock(&viocd_mutex); return ret; } @@ -166,9 +167,9 @@ static int viocd_blk_open(struct block_device *bdev, fmode_t mode) static int viocd_blk_release(struct gendisk *disk, fmode_t mode) { struct disk_info *di = disk->private_data; - lock_kernel(); + mutex_lock(&viocd_mutex); cdrom_release(&di->viocd_info, mode); - unlock_kernel(); + mutex_unlock(&viocd_mutex); return 0; } @@ -178,9 +179,9 @@ static int viocd_blk_ioctl(struct block_device *bdev, fmode_t mode, struct disk_info *di = bdev->bd_disk->private_data; int ret; - lock_kernel(); + mutex_lock(&viocd_mutex); ret = cdrom_ioctl(&di->viocd_info, bdev, mode, cmd, arg); - unlock_kernel(); + mutex_unlock(&viocd_mutex); return ret; } |