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dm ioctl: remove lock_kernel 

Remove lock_kernel() from the device-mapper ioctls - there should
be sufficient internal locking already where required.

Also remove some superfluous casts.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>
hifive-unleashed-5.1
Alasdair G Kergon 2008-02-08 02:09:53 +00:00
parent b9249e5568
commit 27238b2bea
1 changed files with 9 additions and 6 deletions
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15
drivers/md/dm-ioctl.c
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@ -702,7 +702,7 @@ static int dev_rename(struct dm_ioctl *param, size_t param_size)
int r;
char *new_name = (char *) param + param->data_start;
if (new_name < (char *) param->data ||
if (new_name < param->data ||
invalid_str(new_name, (void *) param + param_size)) {
DMWARN("Invalid new logical volume name supplied.");
return -EINVAL;
@ -728,7 +728,7 @@ static int dev_set_geometry(struct dm_ioctl *param, size_t param_size)
if (!md)
return -ENXIO;
if (geostr < (char *) param->data ||
if (geostr < param->data ||
invalid_str(geostr, (void *) param + param_size)) {
DMWARN("Invalid geometry supplied.");
goto out;
@ -1397,13 +1397,11 @@ static int validate_params(uint cmd, struct dm_ioctl *param)
return 0;
}
static int ctl_ioctl(struct inode *inode, struct file *file,
uint command, ulong u)
static int ctl_ioctl(uint command, struct dm_ioctl __user *user)
{
int r = 0;
unsigned int cmd;
struct dm_ioctl *param;
struct dm_ioctl __user *user = (struct dm_ioctl __user *) u;
ioctl_fn fn = NULL;
size_t param_size;
@ -1471,8 +1469,13 @@ static int ctl_ioctl(struct inode *inode, struct file *file,
return r;
}
static long dm_ctl_ioctl(struct file *file, uint command, ulong u)
{
return (long)ctl_ioctl(command, (struct dm_ioctl __user *)u);
}
static const struct file_operations _ctl_fops = {
.ioctl = ctl_ioctl,
.unlocked_ioctl = dm_ctl_ioctl,
.owner = THIS_MODULE,
};