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/block/viodasd.c | |
parent | 613655fa39ff6957754fa8ceb8559980920eb8ee (diff) | |
download | kernel_samsung_smdk4412-2a48fc0ab24241755dc93bfd4f01d68efab47f5a.zip kernel_samsung_smdk4412-2a48fc0ab24241755dc93bfd4f01d68efab47f5a.tar.gz kernel_samsung_smdk4412-2a48fc0ab24241755dc93bfd4f01d68efab47f5a.tar.bz2 |
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/block/viodasd.c')
-rw-r--r-- | drivers/block/viodasd.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/block/viodasd.c b/drivers/block/viodasd.c index f651e51..e2ff697 100644 --- a/drivers/block/viodasd.c +++ b/drivers/block/viodasd.c @@ -41,7 +41,7 @@ #include <linux/errno.h> #include <linux/init.h> #include <linux/string.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/dma-mapping.h> #include <linux/completion.h> #include <linux/device.h> @@ -73,6 +73,7 @@ enum { MAX_DISK_NAME = FIELD_SIZEOF(struct gendisk, disk_name) }; +static DEFINE_MUTEX(viodasd_mutex); static DEFINE_SPINLOCK(viodasd_spinlock); #define VIOMAXREQ 16 @@ -180,9 +181,9 @@ static int viodasd_unlocked_open(struct block_device *bdev, fmode_t mode) { int ret; - lock_kernel(); + mutex_lock(&viodasd_mutex); ret = viodasd_open(bdev, mode); - unlock_kernel(); + mutex_unlock(&viodasd_mutex); return ret; } @@ -196,7 +197,7 @@ static int viodasd_release(struct gendisk *disk, fmode_t mode) struct viodasd_device *d = disk->private_data; HvLpEvent_Rc hvrc; - lock_kernel(); + mutex_lock(&viodasd_mutex); /* Send the event to OS/400. We DON'T expect a response */ hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp, HvLpEvent_Type_VirtualIo, @@ -210,7 +211,7 @@ static int viodasd_release(struct gendisk *disk, fmode_t mode) if (hvrc != 0) pr_warning("HV close call failed %d\n", (int)hvrc); - unlock_kernel(); + mutex_unlock(&viodasd_mutex); return 0; } |