diff options
author | Arnd Bergmann <arnd@arndb.de> | 2010-06-02 16:28:52 +0400 |
---|---|---|
committer | Arnd Bergmann <arnd@arndb.de> | 2010-10-05 17:01:10 +0400 |
commit | 2a48fc0ab24241755dc93bfd4f01d68efab47f5a (patch) | |
tree | fa9ae10ce89b26b7d8ae9ce24bdfda5e3007b763 /drivers/message | |
parent | 613655fa39ff6957754fa8ceb8559980920eb8ee (diff) | |
download | linux-2a48fc0ab24241755dc93bfd4f01d68efab47f5a.tar.xz |
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/message')
-rw-r--r-- | drivers/message/i2o/i2o_block.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c index f0f1e667000f..f87a9d405a5e 100644 --- a/drivers/message/i2o/i2o_block.c +++ b/drivers/message/i2o/i2o_block.c @@ -53,7 +53,7 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/i2o.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/mempool.h> @@ -69,6 +69,7 @@ #define OSM_VERSION "1.325" #define OSM_DESCRIPTION "I2O Block Device OSM" +static DEFINE_MUTEX(i2o_block_mutex); static struct i2o_driver i2o_block_driver; /* global Block OSM request mempool */ @@ -578,7 +579,7 @@ static int i2o_block_open(struct block_device *bdev, fmode_t mode) if (!dev->i2o_dev) return -ENODEV; - lock_kernel(); + mutex_lock(&i2o_block_mutex); if (dev->power > 0x1f) i2o_block_device_power(dev, 0x02); @@ -587,7 +588,7 @@ static int i2o_block_open(struct block_device *bdev, fmode_t mode) i2o_block_device_lock(dev->i2o_dev, -1); osm_debug("Ready.\n"); - unlock_kernel(); + mutex_unlock(&i2o_block_mutex); return 0; }; @@ -618,7 +619,7 @@ static int i2o_block_release(struct gendisk *disk, fmode_t mode) if (!dev->i2o_dev) return 0; - lock_kernel(); + mutex_lock(&i2o_block_mutex); i2o_block_device_flush(dev->i2o_dev); i2o_block_device_unlock(dev->i2o_dev, -1); @@ -629,7 +630,7 @@ static int i2o_block_release(struct gendisk *disk, fmode_t mode) operation = 0x24; i2o_block_device_power(dev, operation); - unlock_kernel(); + mutex_unlock(&i2o_block_mutex); return 0; } @@ -664,7 +665,7 @@ static int i2o_block_ioctl(struct block_device *bdev, fmode_t mode, if (!capable(CAP_SYS_ADMIN)) return -EPERM; - lock_kernel(); + mutex_lock(&i2o_block_mutex); switch (cmd) { case BLKI2OGRSTRAT: ret = put_user(dev->rcache, (int __user *)arg); @@ -688,7 +689,7 @@ static int i2o_block_ioctl(struct block_device *bdev, fmode_t mode, ret = 0; break; } - unlock_kernel(); + mutex_unlock(&i2o_block_mutex); return ret; }; |