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| author | Alan Cox <alan@redhat.com> | 2008-06-11 22:07:52 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2008-07-16 23:27:03 +0200 |
| commit | 52d11025dba32bed696eaee1822b26529e764770 (patch) | |
| tree | 2f7e5094656216c7a12dbcae08ef0cc4fd270dac /kernel | |
| parent | ebb12db51f6c13b30752fcf506baad4c617b153c (diff) | |
| download | linux-52d11025dba32bed696eaee1822b26529e764770.tar.gz linux-52d11025dba32bed696eaee1822b26529e764770.tar.bz2 linux-52d11025dba32bed696eaee1822b26529e764770.zip | |
snapshot: Push BKL down into ioctl handlers
Push BKL down into ioctl handlers - snapshot device.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/power/user.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/kernel/power/user.c b/kernel/power/user.c index f5512cb3aa86..658262b15994 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -23,6 +23,7 @@ #include <linux/console.h> #include <linux/cpu.h> #include <linux/freezer.h> +#include <linux/smp_lock.h> #include <asm/uaccess.h> @@ -164,8 +165,8 @@ static ssize_t snapshot_write(struct file *filp, const char __user *buf, return res; } -static int snapshot_ioctl(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) +static long snapshot_ioctl(struct file *filp, unsigned int cmd, + unsigned long arg) { int error = 0; struct snapshot_data *data; @@ -181,6 +182,8 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, data = filp->private_data; + lock_kernel(); + switch (cmd) { case SNAPSHOT_FREEZE: @@ -389,7 +392,7 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, error = -ENOTTY; } - + unlock_kernel(); return error; } @@ -399,7 +402,7 @@ static const struct file_operations snapshot_fops = { .read = snapshot_read, .write = snapshot_write, .llseek = no_llseek, - .ioctl = snapshot_ioctl, + .unlocked_ioctl = snapshot_ioctl, }; static struct miscdevice snapshot_device = { |