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/xsysace.c | |
parent | 613655fa39ff6957754fa8ceb8559980920eb8ee (diff) | |
download | op-kernel-dev-2a48fc0ab24241755dc93bfd4f01d68efab47f5a.zip op-kernel-dev-2a48fc0ab24241755dc93bfd4f01d68efab47f5a.tar.gz |
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/xsysace.c')
-rw-r--r-- | drivers/block/xsysace.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index 057413b..6e968cd 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -89,7 +89,7 @@ #include <linux/delay.h> #include <linux/slab.h> #include <linux/blkdev.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/ata.h> #include <linux/hdreg.h> #include <linux/platform_device.h> @@ -214,6 +214,7 @@ struct ace_device { u16 cf_id[ATA_ID_WORDS]; }; +static DEFINE_MUTEX(xsysace_mutex); static int ace_major; /* --------------------------------------------------------------------- @@ -903,13 +904,13 @@ static int ace_open(struct block_device *bdev, fmode_t mode) dev_dbg(ace->dev, "ace_open() users=%i\n", ace->users + 1); - lock_kernel(); + mutex_lock(&xsysace_mutex); spin_lock_irqsave(&ace->lock, flags); ace->users++; spin_unlock_irqrestore(&ace->lock, flags); check_disk_change(bdev); - unlock_kernel(); + mutex_unlock(&xsysace_mutex); return 0; } @@ -922,7 +923,7 @@ static int ace_release(struct gendisk *disk, fmode_t mode) dev_dbg(ace->dev, "ace_release() users=%i\n", ace->users - 1); - lock_kernel(); + mutex_lock(&xsysace_mutex); spin_lock_irqsave(&ace->lock, flags); ace->users--; if (ace->users == 0) { @@ -930,7 +931,7 @@ static int ace_release(struct gendisk *disk, fmode_t mode) ace_out(ace, ACE_CTRL, val & ~ACE_CTRL_LOCKREQ); } spin_unlock_irqrestore(&ace->lock, flags); - unlock_kernel(); + mutex_unlock(&xsysace_mutex); return 0; } |