Merge branch 'bkl/ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing

* 'bkl/ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing:
  uml: Pushdown the bkl from harddog_kern ioctl
  sunrpc: Pushdown the bkl from sunrpc cache ioctl
  sunrpc: Pushdown the bkl from ioctl
  autofs4: Pushdown the bkl from ioctl
  uml: Convert to unlocked_ioctls to remove implicit BKL
  ncpfs: BKL ioctl pushdown
  coda: Clean-up whitespace problems in pioctl.c
  coda: BKL ioctl pushdown
  drivers: Push down BKL into various drivers
  isdn: Push down BKL into ioctl functions
  scsi: Push down BKL into ioctl functions
  dvb: Push down BKL into ioctl functions
  smbfs: Push down BKL into ioctl function
  coda/psdev: Remove BKL from ioctl function
  um/mmapper: Remove BKL usage
  sn_hwperf: Kill BKL usage
  hfsplus: Push down BKL into ioctl function

68 files changed, 669 insertions, 312 deletions

diff --git a/arch/ia64/sn/kernel/sn2/sn_hwperf.c b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
index f6c1c5fd075d..fa1eceed0d23 100644
--- a/arch/ia64/sn/kernel/sn2/sn_hwperf.c
+++ b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
@@ -30,7 +30,6 @@
 #include <linux/miscdevice.h>
 #include <linux/utsname.h>
 #include <linux/cpumask.h>
-#include <linux/smp_lock.h>
 #include <linux/nodemask.h>
 #include <linux/smp.h>
 #include <linux/mutex.h>
@@ -682,8 +681,7 @@ static int sn_hwperf_map_err(int hwperf_err)
 /*
  * ioctl for "sn_hwperf" misc device
  */
-static int
-sn_hwperf_ioctl(struct inode *in, struct file *fp, u32 op, unsigned long arg)
+static long sn_hwperf_ioctl(struct file *fp, u32 op, unsigned long arg)
 {
         struct sn_hwperf_ioctl_args a;
         struct cpuinfo_ia64 *cdata;
@@ -699,8 +697,6 @@ sn_hwperf_ioctl(struct inode *in, struct file *fp, u32 op, unsigned long arg)
         int i;
         int j;
 
-        unlock_kernel();
-
         /* only user requests are allowed here */
         if ((op & SN_HWPERF_OP_MASK) < 10) {
                 r = -EINVAL;
@@ -859,12 +855,11 @@ sn_hwperf_ioctl(struct inode *in, struct file *fp, u32 op, unsigned long arg)
 error:
         vfree(p);
 
-        lock_kernel();
         return r;
 }
 
 static const struct file_operations sn_hwperf_fops = {
-        .ioctl = sn_hwperf_ioctl,
+        .unlocked_ioctl = sn_hwperf_ioctl,
 };
 
 static struct miscdevice sn_hwperf_dev = {
diff --git a/arch/um/drivers/harddog_kern.c b/arch/um/drivers/harddog_kern.c
index d332503fa1be..cfcac1ff4cf2 100644
--- a/arch/um/drivers/harddog_kern.c
+++ b/arch/um/drivers/harddog_kern.c
@@ -124,8 +124,8 @@ static ssize_t harddog_write(struct file *file, const char __user *data, size_t
         return 0;
 }
 
-static int harddog_ioctl(struct inode *inode, struct file *file,
-                         unsigned int cmd, unsigned long arg)
+static int harddog_ioctl_unlocked(struct file *file,
+                                  unsigned int cmd, unsigned long arg)
 {
         void __user *argp= (void __user *)arg;
         static struct watchdog_info ident = {
@@ -148,10 +148,22 @@ static int harddog_ioctl(struct inode *inode, struct file *file,
         }
 }
 
+static long harddog_ioctl(struct file *file,
+                          unsigned int cmd, unsigned long arg)
+{
+        long ret;
+
+        lock_kernel();
+        ret = harddog_ioctl_unlocked(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 static const struct file_operations harddog_fops = {
         .owner          = THIS_MODULE,
         .write          = harddog_write,
-        .ioctl          = harddog_ioctl,
+        .unlocked_ioctl = harddog_ioctl,
         .open           = harddog_open,
         .release        = harddog_release,
 };
diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c
index 368219cc2366..ae42695c3597 100644
--- a/arch/um/drivers/hostaudio_kern.c
+++ b/arch/um/drivers/hostaudio_kern.c
@@ -136,7 +136,7 @@ static unsigned int hostaudio_poll(struct file *file,
         return mask;
 }
 
-static int hostaudio_ioctl(struct inode *inode, struct file *file,
+static long hostaudio_ioctl(struct file *file,
                            unsigned int cmd, unsigned long arg)
 {
         struct hostaudio_state *state = file->private_data;
@@ -223,7 +223,7 @@ static int hostaudio_release(struct inode *inode, struct file *file)
 
 /* /dev/mixer file operations */
 
-static int hostmixer_ioctl_mixdev(struct inode *inode, struct file *file,
+static long hostmixer_ioctl_mixdev(struct file *file,
                                   unsigned int cmd, unsigned long arg)
 {
         struct hostmixer_state *state = file->private_data;
@@ -289,7 +289,7 @@ static const struct file_operations hostaudio_fops = {
         .read           = hostaudio_read,
         .write          = hostaudio_write,
         .poll           = hostaudio_poll,
-        .ioctl          = hostaudio_ioctl,
+        .unlocked_ioctl = hostaudio_ioctl,
         .mmap           = NULL,
         .open           = hostaudio_open,
         .release        = hostaudio_release,
@@ -298,7 +298,7 @@ static const struct file_operations hostaudio_fops = {
 static const struct file_operations hostmixer_fops = {
         .owner          = THIS_MODULE,
         .llseek         = no_llseek,
-        .ioctl          = hostmixer_ioctl_mixdev,
+        .unlocked_ioctl = hostmixer_ioctl_mixdev,
         .open           = hostmixer_open_mixdev,
         .release        = hostmixer_release,
 };
diff --git a/arch/um/drivers/mmapper_kern.c b/arch/um/drivers/mmapper_kern.c
index d22f9e5c0eac..7158393b6793 100644
--- a/arch/um/drivers/mmapper_kern.c
+++ b/arch/um/drivers/mmapper_kern.c
@@ -46,8 +46,7 @@ static ssize_t mmapper_write(struct file *file, const char __user *buf,
         return count;
 }
 
-static int mmapper_ioctl(struct inode *inode, struct file *file,
-                         unsigned int cmd, unsigned long arg)
+static long mmapper_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
         return -ENOIOCTLCMD;
 }
@@ -90,7 +89,7 @@ static const struct file_operations mmapper_fops = {
         .owner          = THIS_MODULE,
         .read           = mmapper_read,
         .write          = mmapper_write,
-        .ioctl          = mmapper_ioctl,
+        .unlocked_ioctl = mmapper_ioctl,
         .mmap           = mmapper_mmap,
         .open           = mmapper_open,
         .release        = mmapper_release,
diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c
index 4f568cb9af3f..033e1505fca9 100644
--- a/drivers/char/apm-emulation.c
+++ b/drivers/char/apm-emulation.c
@@ -265,8 +265,8 @@ static unsigned int apm_poll(struct file *fp, poll_table * wait)
  *   Only when everyone who has opened /dev/apm_bios with write permission
  *   has acknowledge does the actual suspend happen.
  */
-static int
-apm_ioctl(struct inode * inode, struct file *filp, u_int cmd, u_long arg)
+static long
+apm_ioctl(struct file *filp, u_int cmd, u_long arg)
 {
         struct apm_user *as = filp->private_data;
         int err = -EINVAL;
@@ -274,6 +274,7 @@ apm_ioctl(struct inode * inode, struct file *filp, u_int cmd, u_long arg)
         if (!as->suser || !as->writer)
                 return -EPERM;
 
+        lock_kernel();
         switch (cmd) {
         case APM_IOC_SUSPEND:
                 mutex_lock(&state_lock);
@@ -334,6 +335,7 @@ apm_ioctl(struct inode * inode, struct file *filp, u_int cmd, u_long arg)
                 mutex_unlock(&state_lock);
                 break;
         }
+        unlock_kernel();
 
         return err;
 }
@@ -397,7 +399,7 @@ static const struct file_operations apm_bios_fops = {
         .owner          = THIS_MODULE,
         .read           = apm_read,
         .poll           = apm_poll,
-        .ioctl          = apm_ioctl,
+        .unlocked_ioctl = apm_ioctl,
         .open           = apm_open,
         .release        = apm_release,
 };
diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c
index a7424bf7eacf..63313a33ba5f 100644
--- a/drivers/char/applicom.c
+++ b/drivers/char/applicom.c
@@ -26,6 +26,7 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/errno.h>
+#include <linux/smp_lock.h>
 #include <linux/miscdevice.h>
 #include <linux/pci.h>
 #include <linux/wait.h>
@@ -106,8 +107,7 @@ static unsigned int DeviceErrorCount;	/* number of device error     */
 
 static ssize_t ac_read (struct file *, char __user *, size_t, loff_t *);
 static ssize_t ac_write (struct file *, const char __user *, size_t, loff_t *);
-static int ac_ioctl(struct inode *, struct file *, unsigned int,
-                    unsigned long);
+static long ac_ioctl(struct file *, unsigned int, unsigned long);
 static irqreturn_t ac_interrupt(int, void *);
 
 static const struct file_operations ac_fops = {
@@ -115,7 +115,7 @@ static const struct file_operations ac_fops = {
         .llseek = no_llseek,
         .read = ac_read,
         .write = ac_write,
-        .ioctl = ac_ioctl,
+        .unlocked_ioctl = ac_ioctl,
 };
 
 static struct miscdevice ac_miscdev = {
@@ -689,7 +689,7 @@ static irqreturn_t ac_interrupt(int vec, void *dev_instance)
 
 
 
-static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long ac_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
      
 {                               /* @ ADG ou ATO selon le cas */
         int i;
@@ -711,7 +711,8 @@ static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, un
                 kfree(adgl);
                 return -EFAULT;
         }
-        
+
+        lock_kernel();  
         IndexCard = adgl->num_card-1;
          
         if(cmd != 6 && ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) {
@@ -721,6 +722,7 @@ static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, un
                         warncount--;
                 }
                 kfree(adgl);
+                unlock_kernel();
                 return -EINVAL;
         }
 
@@ -838,6 +840,7 @@ static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, un
         }
         Dummy = readb(apbs[IndexCard].RamIO + VERS);
         kfree(adgl);
+        unlock_kernel();
         return 0;
 }
 
diff --git a/drivers/char/ds1620.c b/drivers/char/ds1620.c
index 61f0146e215d..dbee8688f75c 100644
--- a/drivers/char/ds1620.c
+++ b/drivers/char/ds1620.c
@@ -232,7 +232,7 @@ ds1620_read(struct file *file, char __user *buf, size_t count, loff_t *ptr)
 }
 
 static int
-ds1620_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+ds1620_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
         struct therm therm;
         union {
@@ -316,6 +316,18 @@ ds1620_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned
         return 0;
 }
 
+static long
+ds1620_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = ds1620_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 #ifdef THERM_USE_PROC
 static int
 proc_therm_ds1620_read(char *buf, char **start, off_t offset,
@@ -344,7 +356,7 @@ static const struct file_operations ds1620_fops = {
         .owner          = THIS_MODULE,
         .open           = ds1620_open,
         .read           = ds1620_read,
-        .ioctl          = ds1620_ioctl,
+        .unlocked_ioctl = ds1620_unlocked_ioctl,
 };
 
 static struct miscdevice ds1620_miscdev = {
diff --git a/drivers/char/dtlk.c b/drivers/char/dtlk.c
index 045c930e6320..e3859d4eaead 100644
--- a/drivers/char/dtlk.c
+++ b/drivers/char/dtlk.c
@@ -93,8 +93,8 @@ static ssize_t dtlk_write(struct file *, const char __user *,
 static unsigned int dtlk_poll(struct file *, poll_table *);
 static int dtlk_open(struct inode *, struct file *);
 static int dtlk_release(struct inode *, struct file *);
-static int dtlk_ioctl(struct inode *inode, struct file *file,
-                      unsigned int cmd, unsigned long arg);
+static long dtlk_ioctl(struct file *file,
+                       unsigned int cmd, unsigned long arg);
 
 static const struct file_operations dtlk_fops =
 {
@@ -102,7 +102,7 @@ static const struct file_operations dtlk_fops =
         .read           = dtlk_read,
         .write          = dtlk_write,
         .poll           = dtlk_poll,
-        .ioctl          = dtlk_ioctl,
+        .unlocked_ioctl = dtlk_ioctl,
         .open           = dtlk_open,
         .release        = dtlk_release,
 };
@@ -263,10 +263,9 @@ static void dtlk_timer_tick(unsigned long data)
         wake_up_interruptible(&dtlk_process_list);
 }
 
-static int dtlk_ioctl(struct inode *inode,
-                      struct file *file,
-                      unsigned int cmd,
-                      unsigned long arg)
+static long dtlk_ioctl(struct file *file,
+                       unsigned int cmd,
+                       unsigned long arg)
 {
         char __user *argp = (char __user *)arg;
         struct dtlk_settings *sp;
@@ -276,7 +275,9 @@ static int dtlk_ioctl(struct inode *inode,
         switch (cmd) {
 
         case DTLK_INTERROGATE:
+                lock_kernel();
                 sp = dtlk_interrogate();
+                unlock_kernel();
                 if (copy_to_user(argp, sp, sizeof(struct dtlk_settings)))
                         return -EINVAL;
                 return 0;
diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c
index fda4181b5e67..82b5a88a82d7 100644
--- a/drivers/char/generic_nvram.c
+++ b/drivers/char/generic_nvram.c
@@ -19,6 +19,7 @@
 #include <linux/miscdevice.h>
 #include <linux/fcntl.h>
 #include <linux/init.h>
+#include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 #include <asm/nvram.h>
 #ifdef CONFIG_PPC_PMAC
@@ -84,8 +85,7 @@ static ssize_t write_nvram(struct file *file, const char __user *buf,
         return p - buf;
 }
 
-static int nvram_ioctl(struct inode *inode, struct file *file,
-        unsigned int cmd, unsigned long arg)
+static int nvram_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
         switch(cmd) {
 #ifdef CONFIG_PPC_PMAC
@@ -116,12 +116,23 @@ static int nvram_ioctl(struct inode *inode, struct file *file,
         return 0;
 }
 
+static long nvram_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = nvram_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 const struct file_operations nvram_fops = {
         .owner          = THIS_MODULE,
         .llseek         = nvram_llseek,
         .read           = read_nvram,
         .write          = write_nvram,
-        .ioctl          = nvram_ioctl,
+        .unlocked_ioctl = nvram_unlocked_ioctl,
 };
 
 static struct miscdevice nvram_dev = {
diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c
index 31e7c91c2d9d..b6c2cc167c11 100644
--- a/drivers/char/genrtc.c
+++ b/drivers/char/genrtc.c
@@ -262,7 +262,7 @@ static inline int gen_set_rtc_irq_bit(unsigned char bit)
 #endif
 }
 
-static int gen_rtc_ioctl(struct inode *inode, struct file *file,
+static int gen_rtc_ioctl(struct file *file,
                          unsigned int cmd, unsigned long arg)
 {
         struct rtc_time wtime;
@@ -332,6 +332,18 @@ static int gen_rtc_ioctl(struct inode *inode, struct file *file,
         return -EINVAL;
 }
 
+static long gen_rtc_unlocked_ioctl(struct file *file, unsigned int cmd,
+                                   unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = gen_rtc_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 /*
  *      We enforce only one user at a time here with the open/close.
  *      Also clear the previous interrupt data on an open, and clean
@@ -482,7 +494,7 @@ static const struct file_operations gen_rtc_fops = {
         .read           = gen_rtc_read,
         .poll           = gen_rtc_poll,
 #endif
-        .ioctl          = gen_rtc_ioctl,
+        .unlocked_ioctl = gen_rtc_unlocked_ioctl,
         .open           = gen_rtc_open,
         .release        = gen_rtc_release,
 };
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 9ded667625ac..a0a1829d3198 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -431,14 +431,18 @@ static int hpet_release(struct inode *inode, struct file *file)
 
 static int hpet_ioctl_common(struct hpet_dev *, int, unsigned long, int);
 
-static int
-hpet_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-           unsigned long arg)
+static long hpet_ioctl(struct file *file, unsigned int cmd,
+                        unsigned long arg)
 {
         struct hpet_dev *devp;
+        int ret;
 
         devp = file->private_data;
-        return hpet_ioctl_common(devp, cmd, arg, 0);
+        lock_kernel();
+        ret = hpet_ioctl_common(devp, cmd, arg, 0);
+        unlock_kernel();
+
+        return ret;
 }
 
 static int hpet_ioctl_ieon(struct hpet_dev *devp)
@@ -654,7 +658,7 @@ static const struct file_operations hpet_fops = {
         .llseek = no_llseek,
         .read = hpet_read,
         .poll = hpet_poll,
-        .ioctl = hpet_ioctl,
+        .unlocked_ioctl = hpet_ioctl,
         .open = hpet_open,
         .release = hpet_release,
         .fasync = hpet_fasync,
diff --git a/drivers/char/ipmi/ipmi_devintf.c b/drivers/char/ipmi/ipmi_devintf.c
index 65545de3dbf4..d8ec92a38980 100644
--- a/drivers/char/ipmi/ipmi_devintf.c
+++ b/drivers/char/ipmi/ipmi_devintf.c
@@ -228,8 +228,7 @@ static int handle_send_req(ipmi_user_t     user,
         return rv;
 }
 
-static int ipmi_ioctl(struct inode  *inode,
-                      struct file   *file,
+static int ipmi_ioctl(struct file   *file,
                       unsigned int  cmd,
                       unsigned long data)
 {
@@ -630,6 +629,23 @@ static int ipmi_ioctl(struct inode  *inode,
         return rv;
 }
 
+/*
+ * Note: it doesn't make sense to take the BKL here but
+ *       not in compat_ipmi_ioctl. -arnd
+ */
+static long ipmi_unlocked_ioctl(struct file   *file,
+                                unsigned int  cmd,
+                                unsigned long data)
+{
+        int ret;
+
+        lock_kernel();
+        ret = ipmi_ioctl(file, cmd, data);
+        unlock_kernel();
+
+        return ret;
+}
+
 #ifdef CONFIG_COMPAT
 
 /*
@@ -802,7 +818,7 @@ static long compat_ipmi_ioctl(struct file *filep, unsigned int cmd,
                 if (copy_to_user(precv64, &recv64, sizeof(recv64)))
                         return -EFAULT;
 
-                rc = ipmi_ioctl(filep->f_path.dentry->d_inode, filep,
+                rc = ipmi_ioctl(filep,
                                 ((cmd == COMPAT_IPMICTL_RECEIVE_MSG)
                                  ? IPMICTL_RECEIVE_MSG
                                  : IPMICTL_RECEIVE_MSG_TRUNC),
@@ -819,14 +835,14 @@ static long compat_ipmi_ioctl(struct file *filep, unsigned int cmd,
                 return rc;
         }
         default:
-                return ipmi_ioctl(filep->f_path.dentry->d_inode, filep, cmd, arg);
+                return ipmi_ioctl(filep, cmd, arg);
         }
 }
 #endif
 
 static const struct file_operations ipmi_fops = {
         .owner          = THIS_MODULE,
-        .ioctl          = ipmi_ioctl,
+        .unlocked_ioctl = ipmi_unlocked_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl   = compat_ipmi_ioctl,
 #endif
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index a4d57e31f713..82bcdb262a3a 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -659,7 +659,7 @@ static struct watchdog_info ident = {
         .identity       = "IPMI"
 };
 
-static int ipmi_ioctl(struct inode *inode, struct file *file,
+static int ipmi_ioctl(struct file *file,
                       unsigned int cmd, unsigned long arg)
 {
         void __user *argp = (void __user *)arg;
@@ -730,6 +730,19 @@ static int ipmi_ioctl(struct inode *inode, struct file *file,
         }
 }
 
+static long ipmi_unlocked_ioctl(struct file *file,
+                                unsigned int cmd,
+                                unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = ipmi_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 static ssize_t ipmi_write(struct file *file,
                           const char  __user *buf,
                           size_t      len,
@@ -880,7 +893,7 @@ static const struct file_operations ipmi_wdog_fops = {
         .read    = ipmi_read,
         .poll    = ipmi_poll,
         .write   = ipmi_write,
-        .ioctl   = ipmi_ioctl,
+        .unlocked_ioctl = ipmi_unlocked_ioctl,
         .open    = ipmi_open,
         .release = ipmi_close,
         .fasync  = ipmi_fasync,
diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 47e8f7b0e4c1..66d2917b003f 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -296,8 +296,8 @@ checksum_err:
         return -EIO;
 }
 
-static int nvram_ioctl(struct inode *inode, struct file *file,
-                                        unsigned int cmd, unsigned long arg)
+static long nvram_ioctl(struct file *file, unsigned int cmd,
+                        unsigned long arg)
 {
         int i;
 
@@ -308,6 +308,7 @@ static int nvram_ioctl(struct inode *inode, struct file *file,
                 if (!capable(CAP_SYS_ADMIN))
                         return -EACCES;
 
+                lock_kernel();
                 spin_lock_irq(&rtc_lock);
 
                 for (i = 0; i < NVRAM_BYTES; ++i)
@@ -315,6 +316,7 @@ static int nvram_ioctl(struct inode *inode, struct file *file,
                 __nvram_set_checksum();
 
                 spin_unlock_irq(&rtc_lock);
+                unlock_kernel();
                 return 0;
 
         case NVRAM_SETCKS:
@@ -323,9 +325,11 @@ static int nvram_ioctl(struct inode *inode, struct file *file,
                 if (!capable(CAP_SYS_ADMIN))
                         return -EACCES;
 
+                lock_kernel();
                 spin_lock_irq(&rtc_lock);
                 __nvram_set_checksum();
                 spin_unlock_irq(&rtc_lock);
+                unlock_kernel();
                 return 0;
 
         default:
@@ -422,7 +426,7 @@ static const struct file_operations nvram_fops = {
         .llseek         = nvram_llseek,
         .read           = nvram_read,
         .write          = nvram_write,
-        .ioctl          = nvram_ioctl,
+        .unlocked_ioctl = nvram_ioctl,
         .open           = nvram_open,
         .release        = nvram_release,
 };
diff --git a/drivers/char/nwflash.c b/drivers/char/nwflash.c
index f80810901db6..043a1c7b86be 100644
--- a/drivers/char/nwflash.c
+++ b/drivers/char/nwflash.c
@@ -94,8 +94,9 @@ static int get_flash_id(void)
         return c2;
 }
 
-static int flash_ioctl(struct inode *inodep, struct file *filep, unsigned int cmd, unsigned long arg)
+static long flash_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 {
+        lock_kernel();
         switch (cmd) {
         case CMD_WRITE_DISABLE:
                 gbWriteBase64Enable = 0;
@@ -113,8 +114,10 @@ static int flash_ioctl(struct inode *inodep, struct file *filep, unsigned int cm
         default:
                 gbWriteBase64Enable = 0;
                 gbWriteEnable = 0;
+                unlock_kernel();
                 return -EINVAL;
         }
+        unlock_kernel();
         return 0;
 }
 
@@ -631,7 +634,7 @@ static const struct file_operations flash_fops =
         .llseek         = flash_llseek,
         .read           = flash_read,
         .write          = flash_write,
-        .ioctl          = flash_ioctl,
+        .unlocked_ioctl = flash_ioctl,
 };
 
 static struct miscdevice flash_miscdev =
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 8756ab0daa8b..b38942f6bf31 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -121,13 +121,17 @@ static int raw_release(struct inode *inode, struct file *filp)
 /*
  * Forward ioctls to the underlying block device.
  */
-static int
-raw_ioctl(struct inode *inode, struct file *filp,
-                  unsigned int command, unsigned long arg)
+static long
+raw_ioctl(struct file *filp, unsigned int command, unsigned long arg)
 {
         struct block_device *bdev = filp->private_data;
+        int ret;
+
+        lock_kernel();
+        ret = blkdev_ioctl(bdev, 0, command, arg);
+        unlock_kernel();
 
-        return blkdev_ioctl(bdev, 0, command, arg);
+        return ret;
 }
 
 static void bind_device(struct raw_config_request *rq)
@@ -141,13 +145,14 @@ static void bind_device(struct raw_config_request *rq)
  * Deal with ioctls against the raw-device control interface, to bind
  * and unbind other raw devices.
  */
-static int raw_ctl_ioctl(struct inode *inode, struct file *filp,
-                        unsigned int command, unsigned long arg)
+static long raw_ctl_ioctl(struct file *filp, unsigned int command,
+                          unsigned long arg)
 {
         struct raw_config_request rq;
         struct raw_device_data *rawdev;
         int err = 0;
 
+        lock_kernel();
         switch (command) {
         case RAW_SETBIND:
         case RAW_GETBIND:
@@ -240,25 +245,26 @@ static int raw_ctl_ioctl(struct inode *inode, struct file *filp,
                 break;
         }
 out:
+        unlock_kernel();
         return err;
 }
 
 static const struct file_operations raw_fops = {
-        .read   =       do_sync_read,
-        .aio_read =     generic_file_aio_read,
-        .write  =       do_sync_write,
-        .aio_write =    blkdev_aio_write,
-        .fsync  =       blkdev_fsync,
-        .open   =       raw_open,
-        .release=       raw_release,
-        .ioctl  =       raw_ioctl,
-        .owner  =       THIS_MODULE,
+        .read           = do_sync_read,
+        .aio_read       = generic_file_aio_read,
+        .write          = do_sync_write,
+        .aio_write      = blkdev_aio_write,
+        .fsync          = blkdev_fsync,
+        .open           = raw_open,
+        .release        = raw_release,
+        .unlocked_ioctl = raw_ioctl,
+        .owner          = THIS_MODULE,
 };
 
 static const struct file_operations raw_ctl_fops = {
-        .ioctl  =       raw_ctl_ioctl,
-        .open   =       raw_open,
-        .owner  =       THIS_MODULE,
+        .unlocked_ioctl = raw_ctl_ioctl,
+        .open           = raw_open,
+        .owner          = THIS_MODULE,
 };
 
 static struct cdev raw_cdev;
diff --git a/drivers/hwmon/fschmd.c b/drivers/hwmon/fschmd.c
index 0627f7a5b9b8..b7ca2a9676cf 100644
--- a/drivers/hwmon/fschmd.c
+++ b/drivers/hwmon/fschmd.c
@@ -38,6 +38,7 @@
 #include <linux/i2c.h>
 #include <linux/hwmon.h>
 #include <linux/hwmon-sysfs.h>
+#include <linux/smp_lock.h>
 #include <linux/err.h>
 #include <linux/mutex.h>
 #include <linux/sysfs.h>
@@ -847,8 +848,7 @@ static ssize_t watchdog_write(struct file *filp, const char __user *buf,
         return count;
 }
 
-static int watchdog_ioctl(struct inode *inode, struct file *filp,
-        unsigned int cmd, unsigned long arg)
+static long watchdog_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
         static struct watchdog_info ident = {
                 .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT |
@@ -858,6 +858,7 @@ static int watchdog_ioctl(struct inode *inode, struct file *filp,
         int i, ret = 0;
         struct fschmd_data *data = filp->private_data;
 
+        lock_kernel();
         switch (cmd) {
         case WDIOC_GETSUPPORT:
                 ident.firmware_version = data->revision;
@@ -914,7 +915,7 @@ static int watchdog_ioctl(struct inode *inode, struct file *filp,
         default:
                 ret = -ENOTTY;
         }
-
+        unlock_kernel();
         return ret;
 }
 
@@ -924,7 +925,7 @@ static const struct file_operations watchdog_fops = {
         .open = watchdog_open,
         .release = watchdog_release,
         .write = watchdog_write,
-        .ioctl = watchdog_ioctl,
+        .unlocked_ioctl = watchdog_ioctl,
 };
 
 
diff --git a/drivers/hwmon/w83793.c b/drivers/hwmon/w83793.c
index 612807d97155..697202e27891 100644
--- a/drivers/hwmon/w83793.c
+++ b/drivers/hwmon/w83793.c
@@ -35,6 +35,7 @@
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <linux/hwmon.h>
+#include <linux/smp_lock.h>
 #include <linux/hwmon-vid.h>
 #include <linux/hwmon-sysfs.h>
 #include <linux/err.h>
@@ -1319,8 +1320,8 @@ static ssize_t watchdog_write(struct file *filp, const char __user *buf,
         return count;
 }
 
-static int watchdog_ioctl(struct inode *inode, struct file *filp,
-                          unsigned int cmd, unsigned long arg)
+static long watchdog_ioctl(struct file *filp, unsigned int cmd,
+                           unsigned long arg)
 {
         static struct watchdog_info ident = {
                 .options = WDIOF_KEEPALIVEPING |
@@ -1332,6 +1333,7 @@ static int watchdog_ioctl(struct inode *inode, struct file *filp,
         int val, ret = 0;
         struct w83793_data *data = filp->private_data;
 
+        lock_kernel();
         switch (cmd) {
         case WDIOC_GETSUPPORT:
                 if (!nowayout)
@@ -1385,7 +1387,7 @@ static int watchdog_ioctl(struct inode *inode, struct file *filp,
         default:
                 ret = -ENOTTY;
         }
-
+        unlock_kernel();
         return ret;
 }
 
@@ -1395,7 +1397,7 @@ static const struct file_operations watchdog_fops = {
         .open = watchdog_open,
         .release = watchdog_close,
         .write = watchdog_write,
-        .ioctl = watchdog_ioctl,
+        .unlocked_ioctl = watchdog_ioctl,
 };
 
 /*
diff --git a/drivers/input/misc/hp_sdc_rtc.c b/drivers/input/misc/hp_sdc_rtc.c
index ad730e15afc0..e00a1cc79c0a 100644
--- a/drivers/input/misc/hp_sdc_rtc.c
+++ b/drivers/input/misc/hp_sdc_rtc.c
@@ -43,6 +43,7 @@
 #include <linux/proc_fs.h>
 #include <linux/poll.h>
 #include <linux/rtc.h>
+#include <linux/smp_lock.h>
 #include <linux/semaphore.h>
 
 MODULE_AUTHOR("Brian S. Julin <bri@calyx.com>");
@@ -64,8 +65,8 @@ static DECLARE_WAIT_QUEUE_HEAD(hp_sdc_rtc_wait);
 static ssize_t hp_sdc_rtc_read(struct file *file, char __user *buf,
                                size_t count, loff_t *ppos);
 
-static int hp_sdc_rtc_ioctl(struct inode *inode, struct file *file,
-                            unsigned int cmd, unsigned long arg);
+static long hp_sdc_rtc_unlocked_ioctl(struct file *file,
+                                      unsigned int cmd, unsigned long arg);
 
 static unsigned int hp_sdc_rtc_poll(struct file *file, poll_table *wait);
 
@@ -512,7 +513,7 @@ static int hp_sdc_rtc_read_proc(char *page, char **start, off_t off,
         return len;
 }
 
-static int hp_sdc_rtc_ioctl(struct inode *inode, struct file *file, 
+static int hp_sdc_rtc_ioctl(struct file *file, 
                             unsigned int cmd, unsigned long arg)
 {
 #if 1
@@ -659,14 +660,27 @@ static int hp_sdc_rtc_ioctl(struct inode *inode, struct file *file,
 #endif
 }
 
+static long hp_sdc_rtc_unlocked_ioctl(struct file *file,
+                                      unsigned int cmd, unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = hp_sdc_rtc_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
+
 static const struct file_operations hp_sdc_rtc_fops = {
-        .owner =        THIS_MODULE,
-        .llseek =       no_llseek,
-        .read =         hp_sdc_rtc_read,
-        .poll =         hp_sdc_rtc_poll,
-        .ioctl =        hp_sdc_rtc_ioctl,
-        .open =         hp_sdc_rtc_open,
-        .fasync =       hp_sdc_rtc_fasync,
+        .owner =                THIS_MODULE,
+        .llseek =               no_llseek,
+        .read =                 hp_sdc_rtc_read,
+        .poll =                 hp_sdc_rtc_poll,
+        .unlocked_ioctl =       hp_sdc_rtc_ioctl,
+        .open =                 hp_sdc_rtc_open,
+        .fasync =               hp_sdc_rtc_fasync,
 };
 
 static struct miscdevice hp_sdc_rtc_dev = {
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index ee5837522f5a..0cabe31f26df 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -787,8 +787,7 @@ capi_poll(struct file *file, poll_table * wait)
 }
 
 static int
-capi_ioctl(struct inode *inode, struct file *file,
-           unsigned int cmd, unsigned long arg)
+capi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
         struct capidev *cdev = file->private_data;
         capi_ioctl_struct data;
@@ -981,6 +980,18 @@ register_out:
         }
 }
 
+static long
+capi_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = capi_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 static int capi_open(struct inode *inode, struct file *file)
 {
         struct capidev *cdev;
@@ -1026,7 +1037,7 @@ static const struct file_operations capi_fops =
         .read           = capi_read,
         .write          = capi_write,
         .poll           = capi_poll,
-        .ioctl          = capi_ioctl,
+        .unlocked_ioctl = capi_unlocked_ioctl,
         .open           = capi_open,
         .release        = capi_release,
 };
diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c
index 70044ee4b228..a44cdb492ea9 100644
--- a/drivers/isdn/i4l/isdn_common.c
+++ b/drivers/isdn/i4l/isdn_common.c
@@ -1272,9 +1272,9 @@ isdn_poll(struct file *file, poll_table * wait)
 
 
 static int
-isdn_ioctl(struct inode *inode, struct file *file, uint cmd, ulong arg)
+isdn_ioctl(struct file *file, uint cmd, ulong arg)
 {
-        uint minor = iminor(inode);
+        uint minor = iminor(file->f_path.dentry->d_inode);
         isdn_ctrl c;
         int drvidx;
         int chidx;
@@ -1722,6 +1722,18 @@ isdn_ioctl(struct inode *inode, struct file *file, uint cmd, ulong arg)
 #undef cfg
 }
 
+static long
+isdn_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = isdn_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 /*
  * Open the device code.
  */
@@ -1838,7 +1850,7 @@ static const struct file_operations isdn_fops =
         .read           = isdn_read,
         .write          = isdn_write,
         .poll           = isdn_poll,
-        .ioctl          = isdn_ioctl,
+        .unlocked_ioctl = isdn_unlocked_ioctl,
         .open           = isdn_open,
         .release        = isdn_close,
 };
diff --git a/drivers/isdn/mISDN/timerdev.c b/drivers/isdn/mISDN/timerdev.c
index 8785004e85e0..c3243c913ec0 100644
--- a/drivers/isdn/mISDN/timerdev.c
+++ b/drivers/isdn/mISDN/timerdev.c
@@ -24,6 +24,7 @@
 #include <linux/miscdevice.h>
 #include <linux/module.h>
 #include <linux/mISDNif.h>
+#include <linux/smp_lock.h>
 #include "core.h"
 
 static u_int    *debug;
@@ -215,9 +216,8 @@ unlock:
         return ret;
 }
 
-static int
-mISDN_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
-    unsigned long arg)
+static long
+mISDN_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 {
         struct mISDNtimerdev    *dev = filep->private_data;
         int                     id, tout, ret = 0;
@@ -226,6 +226,7 @@ mISDN_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
         if (*debug & DEBUG_TIMER)
                 printk(KERN_DEBUG "%s(%p, %x, %lx)\n", __func__,
                     filep, cmd, arg);
+        lock_kernel();
         switch (cmd) {
         case IMADDTIMER:
                 if (get_user(tout, (int __user *)arg)) {
@@ -257,13 +258,14 @@ mISDN_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
         default:
                 ret = -EINVAL;
         }
+        unlock_kernel();
         return ret;
 }
 
 static const struct file_operations mISDN_fops = {
         .read           = mISDN_read,
         .poll           = mISDN_poll,
-        .ioctl          = mISDN_ioctl,
+        .unlocked_ioctl = mISDN_ioctl,
         .open           = mISDN_open,
         .release        = mISDN_close,
 };
diff --git a/drivers/macintosh/nvram.c b/drivers/macintosh/nvram.c
index c876349c32de..a271c8218d82 100644
--- a/drivers/macintosh/nvram.c
+++ b/drivers/macintosh/nvram.c
@@ -100,7 +100,7 @@ const struct file_operations nvram_fops = {
         .llseek         = nvram_llseek,
         .read           = read_nvram,
         .write          = write_nvram,
-        .ioctl          = nvram_ioctl,
+        .unlocked_ioctl = nvram_ioctl,
 };
 
 static struct miscdevice nvram_dev = {
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 42764849eb78..3d4fc0f7b00b 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -2273,8 +2273,7 @@ static int register_pmu_pm_ops(void)
 device_initcall(register_pmu_pm_ops);
 #endif
 
-static int
-pmu_ioctl(struct inode * inode, struct file *filp,
+static int pmu_ioctl(struct file *filp,
                      u_int cmd, u_long arg)
 {
         __u32 __user *argp = (__u32 __user *)arg;
@@ -2337,11 +2336,23 @@ pmu_ioctl(struct inode * inode, struct file *filp,
         return error;
 }
 
+static long pmu_unlocked_ioctl(struct file *filp,
+                               u_int cmd, u_long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = pmu_ioctl(filp, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 static const struct file_operations pmu_device_fops = {
         .read           = pmu_read,
         .write          = pmu_write,
         .poll           = pmu_fpoll,
-        .ioctl          = pmu_ioctl,
+        .unlocked_ioctl = pmu_unlocked_ioctl,
         .open           = pmu_open,
         .release        = pmu_release,
 };
diff --git a/drivers/media/dvb/dvb-core/dmxdev.c b/drivers/media/dvb/dvb-core/dmxdev.c
index 9ddc57909d49..425862ffb285 100644
--- a/drivers/media/dvb/dvb-core/dmxdev.c
+++ b/drivers/media/dvb/dvb-core/dmxdev.c
@@ -25,6 +25,7 @@
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
 #include <linux/module.h>
+#include <linux/smp_lock.h>
 #include <linux/poll.h>
 #include <linux/ioctl.h>
 #include <linux/wait.h>
@@ -963,7 +964,7 @@ dvb_demux_read(struct file *file, char __user *buf, size_t count,
         return ret;
 }
 
-static int dvb_demux_do_ioctl(struct inode *inode, struct file *file,
+static int dvb_demux_do_ioctl(struct file *file,
                               unsigned int cmd, void *parg)
 {
         struct dmxdev_filter *dmxdevfilter = file->private_data;
@@ -1084,10 +1085,16 @@ static int dvb_demux_do_ioctl(struct inode *inode, struct file *file,
         return ret;
 }
 
-static int dvb_demux_ioctl(struct inode *inode, struct file *file,
-                           unsigned int cmd, unsigned long arg)
+static long dvb_demux_ioctl(struct file *file, unsigned int cmd,
+                            unsigned long arg)
 {
-        return dvb_usercopy(inode, file, cmd, arg, dvb_demux_do_ioctl);
+        int ret;
+
+        lock_kernel();
+        ret = dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl);
+        unlock_kernel();
+
+        return ret;
 }
 
 static unsigned int dvb_demux_poll(struct file *file, poll_table *wait)
@@ -1139,7 +1146,7 @@ static int dvb_demux_release(struct inode *inode, struct file *file)
 static const struct file_operations dvb_demux_fops = {
         .owner = THIS_MODULE,
         .read = dvb_demux_read,
-        .ioctl = dvb_demux_ioctl,
+        .unlocked_ioctl = dvb_demux_ioctl,
         .open = dvb_demux_open,
         .release = dvb_demux_release,
         .poll = dvb_demux_poll,
@@ -1152,7 +1159,7 @@ static struct dvb_device dvbdev_demux = {
         .fops = &dvb_demux_fops
 };
 
-static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file,
+static int dvb_dvr_do_ioctl(struct file *file,
                             unsigned int cmd, void *parg)
 {
         struct dvb_device *dvbdev = file->private_data;
@@ -1176,10 +1183,16 @@ static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file,
         return ret;
 }
 
-static int dvb_dvr_ioctl(struct inode *inode, struct file *file,
+static long dvb_dvr_ioctl(struct file *file,
                          unsigned int cmd, unsigned long arg)
 {
-        return dvb_usercopy(inode, file, cmd, arg, dvb_dvr_do_ioctl);
+        int ret;
+
+        lock_kernel();
+        ret = dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl);
+        unlock_kernel();
+
+        return ret;
 }
 
 static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait)
@@ -1208,7 +1221,7 @@ static const struct file_operations dvb_dvr_fops = {
         .owner = THIS_MODULE,
         .read = dvb_dvr_read,
         .write = dvb_dvr_write,
-        .ioctl = dvb_dvr_ioctl,
+        .unlocked_ioctl = dvb_dvr_ioctl,
         .open = dvb_dvr_open,
         .release = dvb_dvr_release,
         .poll = dvb_dvr_poll,
diff --git a/drivers/media/dvb/dvb-core/dvb_ca_en50221.c b/drivers/media/dvb/dvb-core/dvb_ca_en50221.c
index cb22da53bfb0..ef259a0718ac 100644
--- a/drivers/media/dvb/dvb-core/dvb_ca_en50221.c
+++ b/drivers/media/dvb/dvb-core/dvb_ca_en50221.c
@@ -36,6 +36,7 @@
 #include <linux/delay.h>
 #include <linux/spinlock.h>
 #include <linux/sched.h>
+#include <linux/smp_lock.h>
 #include <linux/kthread.h>
 
 #include "dvb_ca_en50221.h"
@@ -1181,7 +1182,7 @@ static int dvb_ca_en50221_thread(void *data)
  *
  * @return 0 on success, <0 on error.
  */
-static int dvb_ca_en50221_io_do_ioctl(struct inode *inode, struct file *file,
+static int dvb_ca_en50221_io_do_ioctl(struct file *file,
                                       unsigned int cmd, void *parg)
 {
         struct dvb_device *dvbdev = file->private_data;
@@ -1255,10 +1256,16 @@ static int dvb_ca_en50221_io_do_ioctl(struct inode *inode, struct file *file,
  *
  * @return 0 on success, <0 on error.
  */
-static int dvb_ca_en50221_io_ioctl(struct inode *inode, struct file *file,
-                                   unsigned int cmd, unsigned long arg)
+static long dvb_ca_en50221_io_ioctl(struct file *file,
+                                    unsigned int cmd, unsigned long arg)
 {
-        return dvb_usercopy(inode, file, cmd, arg, dvb_ca_en50221_io_do_ioctl);
+        int ret;
+
+        lock_kernel();
+        ret = dvb_usercopy(file, cmd, arg, dvb_ca_en50221_io_do_ioctl);
+        unlock_kernel();
+
+        return ret;
 }
 
 
@@ -1611,7 +1618,7 @@ static const struct file_operations dvb_ca_fops = {
         .owner = THIS_MODULE,
         .read = dvb_ca_en50221_io_read,
         .write = dvb_ca_en50221_io_write,
-        .ioctl = dvb_ca_en50221_io_ioctl,
+        .unlocked_ioctl = dvb_ca_en50221_io_ioctl,
         .open = dvb_ca_en50221_io_open,
         .release = dvb_ca_en50221_io_release,
         .poll = dvb_ca_en50221_io_poll,
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index 6932def4d266..44ae89ecef94 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -36,6 +36,7 @@
 #include <linux/list.h>
 #include <linux/freezer.h>
 #include <linux/jiffies.h>
+#include <linux/smp_lock.h>
 #include <linux/kthread.h>
 #include <asm/processor.h>
 
@@ -1195,14 +1196,14 @@ static void dtv_property_cache_submit(struct dvb_frontend *fe)
         }
 }
 
-static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
+static int dvb_frontend_ioctl_legacy(struct file *file,
                         unsigned int cmd, void *parg);
-static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
+static int dvb_frontend_ioctl_properties(struct file *file,
                         unsigned int cmd, void *parg);
 
 static int dtv_property_process_get(struct dvb_frontend *fe,
                                     struct dtv_property *tvp,
-                                    struct inode *inode, struct file *file)
+                                    struct file *file)
 {
         int r = 0;
 
@@ -1335,7 +1336,6 @@ static int dtv_property_process_get(struct dvb_frontend *fe,
 
 static int dtv_property_process_set(struct dvb_frontend *fe,
                                     struct dtv_property *tvp,
-                                    struct inode *inode,
                                     struct file *file)
 {
         int r = 0;
@@ -1366,7 +1366,7 @@ static int dtv_property_process_set(struct dvb_frontend *fe,
                 dprintk("%s() Finalised property cache\n", __func__);
                 dtv_property_cache_submit(fe);
 
-                r |= dvb_frontend_ioctl_legacy(inode, file, FE_SET_FRONTEND,
+                r |= dvb_frontend_ioctl_legacy(file, FE_SET_FRONTEND,
                         &fepriv->parameters);
                 break;
         case DTV_FREQUENCY:
@@ -1398,12 +1398,12 @@ static int dtv_property_process_set(struct dvb_frontend *fe,
                 break;
         case DTV_VOLTAGE:
                 fe->dtv_property_cache.voltage = tvp->u.data;
-                r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_VOLTAGE,
+                r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
                         (void *)fe->dtv_property_cache.voltage);
                 break;
         case DTV_TONE:
                 fe->dtv_property_cache.sectone = tvp->u.data;
-                r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_TONE,
+                r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
                         (void *)fe->dtv_property_cache.sectone);
                 break;
         case DTV_CODE_RATE_HP:
@@ -1487,7 +1487,7 @@ static int dtv_property_process_set(struct dvb_frontend *fe,
         return r;
 }
 
-static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
+static int dvb_frontend_ioctl(struct file *file,
                         unsigned int cmd, void *parg)
 {
         struct dvb_device *dvbdev = file->private_data;
@@ -1509,17 +1509,17 @@ static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
                 return -ERESTARTSYS;
 
         if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
-                err = dvb_frontend_ioctl_properties(inode, file, cmd, parg);
+                err = dvb_frontend_ioctl_properties(file, cmd, parg);
         else {
                 fe->dtv_property_cache.state = DTV_UNDEFINED;
-                err = dvb_frontend_ioctl_legacy(inode, file, cmd, parg);
+                err = dvb_frontend_ioctl_legacy(file, cmd, parg);
         }
 
         up(&fepriv->sem);
         return err;
 }
 
-static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
+static int dvb_frontend_ioctl_properties(struct file *file,
                         unsigned int cmd, void *parg)
 {
         struct dvb_device *dvbdev = file->private_data;
@@ -1555,7 +1555,7 @@ static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
                 }
 
                 for (i = 0; i < tvps->num; i++) {
-                        (tvp + i)->result = dtv_property_process_set(fe, tvp + i, inode, file);
+                        (tvp + i)->result = dtv_property_process_set(fe, tvp + i, file);
                         err |= (tvp + i)->result;
                 }
 
@@ -1587,7 +1587,7 @@ static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
                 }
 
                 for (i = 0; i < tvps->num; i++) {
-                        (tvp + i)->result = dtv_property_process_get(fe, tvp + i, inode, file);
+                        (tvp + i)->result = dtv_property_process_get(fe, tvp + i, file);
                         err |= (tvp + i)->result;
                 }
 
@@ -1604,7 +1604,7 @@ out:
         return err;
 }
 
-static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
+static int dvb_frontend_ioctl_legacy(struct file *file,
                         unsigned int cmd, void *parg)
 {
         struct dvb_device *dvbdev = file->private_data;
@@ -2031,7 +2031,7 @@ static int dvb_frontend_release(struct inode *inode, struct file *file)
 
 static const struct file_operations dvb_frontend_fops = {
         .owner          = THIS_MODULE,
-        .ioctl          = dvb_generic_ioctl,
+        .unlocked_ioctl = dvb_generic_ioctl,
         .poll           = dvb_frontend_poll,
         .open           = dvb_frontend_open,
         .release        = dvb_frontend_release
diff --git a/drivers/media/dvb/dvb-core/dvb_net.c b/drivers/media/dvb/dvb-core/dvb_net.c
index cccea412088b..f6dac2bb0ac6 100644
--- a/drivers/media/dvb/dvb-core/dvb_net.c
+++ b/drivers/media/dvb/dvb-core/dvb_net.c
@@ -59,6 +59,7 @@
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/dvb/net.h>
+#include <linux/smp_lock.h>
 #include <linux/uio.h>
 #include <asm/uaccess.h>
 #include <linux/crc32.h>
@@ -1329,7 +1330,7 @@ static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned long num)
         return 0;
 }
 
-static int dvb_net_do_ioctl(struct inode *inode, struct file *file,
+static int dvb_net_do_ioctl(struct file *file,
                   unsigned int cmd, void *parg)
 {
         struct dvb_device *dvbdev = file->private_data;
@@ -1431,10 +1432,16 @@ static int dvb_net_do_ioctl(struct inode *inode, struct file *file,
         return 0;
 }
 
-static int dvb_net_ioctl(struct inode *inode, struct file *file,
+static long dvb_net_ioctl(struct file *file,
               unsigned int cmd, unsigned long arg)
 {
-        return dvb_usercopy(inode, file, cmd, arg, dvb_net_do_ioctl);
+        int ret;
+
+        lock_kernel();
+        ret = dvb_usercopy(file, cmd, arg, dvb_net_do_ioctl);
+        unlock_kernel();
+
+        return ret;
 }
 
 static int dvb_net_close(struct inode *inode, struct file *file)
@@ -1455,7 +1462,7 @@ static int dvb_net_close(struct inode *inode, struct file *file)
 
 static const struct file_operations dvb_net_fops = {
         .owner = THIS_MODULE,
-        .ioctl = dvb_net_ioctl,
+        .unlocked_ioctl = dvb_net_ioctl,
         .open = dvb_generic_open,
         .release = dvb_net_close,
 };
diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c
index 94159b90f733..b915c39d782f 100644
--- a/drivers/media/dvb/dvb-core/dvbdev.c
+++ b/drivers/media/dvb/dvb-core/dvbdev.c
@@ -154,10 +154,11 @@ int dvb_generic_release(struct inode *inode, struct file *file)
 EXPORT_SYMBOL(dvb_generic_release);
 
 
-int dvb_generic_ioctl(struct inode *inode, struct file *file,
-                      unsigned int cmd, unsigned long arg)
+long dvb_generic_ioctl(struct file *file,
+                       unsigned int cmd, unsigned long arg)
 {
         struct dvb_device *dvbdev = file->private_data;
+        int ret;
 
         if (!dvbdev)
                 return -ENODEV;
@@ -165,7 +166,11 @@ int dvb_generic_ioctl(struct inode *inode, struct file *file,
         if (!dvbdev->kernel_ioctl)
                 return -EINVAL;
 
-        return dvb_usercopy (inode, file, cmd, arg, dvbdev->kernel_ioctl);
+        lock_kernel();
+        ret = dvb_usercopy(file, cmd, arg, dvbdev->kernel_ioctl);
+        unlock_kernel();
+
+        return ret;
 }
 EXPORT_SYMBOL(dvb_generic_ioctl);
 
@@ -377,9 +382,9 @@ EXPORT_SYMBOL(dvb_unregister_adapter);
    define this as video_usercopy(). this will introduce a dependecy
    to the v4l "videodev.o" module, which is unnecessary for some
    cards (ie. the budget dvb-cards don't need the v4l module...) */
-int dvb_usercopy(struct inode *inode, struct file *file,
+int dvb_usercopy(struct file *file,
                      unsigned int cmd, unsigned long arg,
-                     int (*func)(struct inode *inode, struct file *file,
+                     int (*func)(struct file *file,
                      unsigned int cmd, void *arg))
 {
         char    sbuf[128];
@@ -416,7 +421,7 @@ int dvb_usercopy(struct inode *inode, struct file *file,
         }
 
         /* call driver */
-        if ((err = func(inode, file, cmd, parg)) == -ENOIOCTLCMD)
+        if ((err = func(file, cmd, parg)) == -ENOIOCTLCMD)
                 err = -EINVAL;
 
         if (err < 0)
diff --git a/drivers/media/dvb/dvb-core/dvbdev.h b/drivers/media/dvb/dvb-core/dvbdev.h
index f7b499d4a3c0..fcc6ae98745e 100644
--- a/drivers/media/dvb/dvb-core/dvbdev.h
+++ b/drivers/media/dvb/dvb-core/dvbdev.h
@@ -116,8 +116,7 @@ struct dvb_device {
 
         wait_queue_head_t         wait_queue;
         /* don't really need those !? -- FIXME: use video_usercopy  */
-        int (*kernel_ioctl)(struct inode *inode, struct file *file,
-                            unsigned int cmd, void *arg);
+        int (*kernel_ioctl)(struct file *file, unsigned int cmd, void *arg);
 
         void *priv;
 };
@@ -138,17 +137,15 @@ extern void dvb_unregister_device (struct dvb_device *dvbdev);
 
 extern int dvb_generic_open (struct inode *inode, struct file *file);
 extern int dvb_generic_release (struct inode *inode, struct file *file);
-extern int dvb_generic_ioctl (struct inode *inode, struct file *file,
+extern long dvb_generic_ioctl (struct file *file,
                               unsigned int cmd, unsigned long arg);
 
 /* we don't mess with video_usercopy() any more,
 we simply define out own dvb_usercopy(), which will hopefully become
 generic_usercopy()  someday... */
 
-extern int dvb_usercopy(struct inode *inode, struct file *file,
-                            unsigned int cmd, unsigned long arg,
-                            int (*func)(struct inode *inode, struct file *file,
-                            unsigned int cmd, void *arg));
+extern int dvb_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
+                            int (*func)(struct file *file, unsigned int cmd, void *arg));
 
 /** generic DVB attach function. */
 #ifdef CONFIG_MEDIA_ATTACH
diff --git a/drivers/media/dvb/firewire/firedtv-ci.c b/drivers/media/dvb/firewire/firedtv-ci.c
index 853e04b7cb36..d3c2cf60de76 100644
--- a/drivers/media/dvb/firewire/firedtv-ci.c
+++ b/drivers/media/dvb/firewire/firedtv-ci.c
@@ -175,8 +175,7 @@ static int fdtv_ca_send_msg(struct firedtv *fdtv, void *arg)
         return err;
 }
 
-static int fdtv_ca_ioctl(struct inode *inode, struct file *file,
-                            unsigned int cmd, void *arg)
+static int fdtv_ca_ioctl(struct file *file, unsigned int cmd, void *arg)
 {
         struct dvb_device *dvbdev = file->private_data;
         struct firedtv *fdtv = dvbdev->priv;
@@ -217,7 +216,7 @@ static unsigned int fdtv_ca_io_poll(struct file *file, poll_table *wait)
 
 static const struct file_operations fdtv_ca_fops = {
         .owner          = THIS_MODULE,
-        .ioctl          = dvb_generic_ioctl,
+        .unlocked_ioctl = dvb_generic_ioctl,
         .open           = dvb_generic_open,
         .release        = dvb_generic_release,
         .poll           = fdtv_ca_io_poll,
diff --git a/drivers/media/dvb/ttpci/av7110.c b/drivers/media/dvb/ttpci/av7110.c
index 38915591c6e5..a6be529eec5c 100644
--- a/drivers/media/dvb/ttpci/av7110.c
+++ b/drivers/media/dvb/ttpci/av7110.c
@@ -708,7 +708,7 @@ static void gpioirq(unsigned long cookie)
 
 
 #ifdef CONFIG_DVB_AV7110_OSD
-static int dvb_osd_ioctl(struct inode *inode, struct file *file,
+static int dvb_osd_ioctl(struct file *file,
                          unsigned int cmd, void *parg)
 {
         struct dvb_device *dvbdev = file->private_data;
@@ -727,7 +727,7 @@ static int dvb_osd_ioctl(struct inode *inode, struct file *file,
 
 static const struct file_operations dvb_osd_fops = {
         .owner          = THIS_MODULE,
-        .ioctl          = dvb_generic_ioctl,
+        .unlocked_ioctl = dvb_generic_ioctl,
         .open           = dvb_generic_open,
         .release        = dvb_generic_release,
 };
diff --git a/drivers/media/dvb/ttpci/av7110_av.c b/drivers/media/dvb/ttpci/av7110_av.c
index 53884814161c..13efba942dac 100644
--- a/drivers/media/dvb/ttpci/av7110_av.c
+++ b/drivers/media/dvb/ttpci/av7110_av.c
@@ -1089,7 +1089,7 @@ static int play_iframe(struct av7110 *av7110, char __user *buf, unsigned int len
 }
 
 
-static int dvb_video_ioctl(struct inode *inode, struct file *file,
+static int dvb_video_ioctl(struct file *file,
                            unsigned int cmd, void *parg)
 {
         struct dvb_device *dvbdev = file->private_data;
@@ -1297,7 +1297,7 @@ static int dvb_video_ioctl(struct inode *inode, struct file *file,
         return ret;
 }
 
-static int dvb_audio_ioctl(struct inode *inode, struct file *file,
+static int dvb_audio_ioctl(struct file *file,
                            unsigned int cmd, void *parg)
 {
         struct dvb_device *dvbdev = file->private_data;
@@ -1517,7 +1517,7 @@ static int dvb_audio_release(struct inode *inode, struct file *file)
 static const struct file_operations dvb_video_fops = {
         .owner          = THIS_MODULE,
         .write          = dvb_video_write,
-        .ioctl          = dvb_generic_ioctl,
+        .unlocked_ioctl = dvb_generic_ioctl,
         .open           = dvb_video_open,
         .release        = dvb_video_release,
         .poll           = dvb_video_poll,
@@ -1535,7 +1535,7 @@ static struct dvb_device dvbdev_video = {
 static const struct file_operations dvb_audio_fops = {
         .owner          = THIS_MODULE,
         .write          = dvb_audio_write,
-        .ioctl          = dvb_generic_ioctl,
+        .unlocked_ioctl = dvb_generic_ioctl,
         .open           = dvb_audio_open,
         .release        = dvb_audio_release,
         .poll           = dvb_audio_poll,
diff --git a/drivers/media/dvb/ttpci/av7110_ca.c b/drivers/media/dvb/ttpci/av7110_ca.c
index ac7779c45c5b..4eba35a018e3 100644
--- a/drivers/media/dvb/ttpci/av7110_ca.c
+++ b/drivers/media/dvb/ttpci/av7110_ca.c
@@ -248,8 +248,7 @@ static unsigned int dvb_ca_poll (struct file *file, poll_table *wait)
         return mask;
 }
 
-static int dvb_ca_ioctl(struct inode *inode, struct file *file,
-                 unsigned int cmd, void *parg)
+static int dvb_ca_ioctl(struct file *file, unsigned int cmd, void *parg)
 {
         struct dvb_device *dvbdev = file->private_data;
         struct av7110 *av7110 = dvbdev->priv;
@@ -350,7 +349,7 @@ static const struct file_operations dvb_ca_fops = {
         .owner          = THIS_MODULE,
         .read           = dvb_ca_read,
         .write          = dvb_ca_write,
-        .ioctl          = dvb_generic_ioctl,
+        .unlocked_ioctl = dvb_generic_ioctl,
         .open           = dvb_ca_open,
         .release        = dvb_generic_release,
         .poll           = dvb_ca_poll,
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 8bb5e4a66328..000d65ea55a4 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -468,8 +468,7 @@ static int mtd_do_readoob(struct mtd_info *mtd, uint64_t start,
         return ret;
 }
 
-static int mtd_ioctl(struct inode *inode, struct file *file,
-                     u_int cmd, u_long arg)
+static int mtd_ioctl(struct file *file, u_int cmd, u_long arg)
 {
         struct mtd_file_info *mfi = file->private_data;
         struct mtd_info *mtd = mfi->mtd;
@@ -840,6 +839,17 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
         return ret;
 } /* memory_ioctl */
 
+static long mtd_unlocked_ioctl(struct file *file, u_int cmd, u_long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = mtd_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 #ifdef CONFIG_COMPAT
 
 struct mtd_oob_buf32 {
@@ -854,7 +864,6 @@ struct mtd_oob_buf32 {
 static long mtd_compat_ioctl(struct file *file, unsigned int cmd,
         unsigned long arg)
 {
-        struct inode *inode = file->f_path.dentry->d_inode;
         struct mtd_file_info *mfi = file->private_data;
         struct mtd_info *mtd = mfi->mtd;
         void __user *argp = compat_ptr(arg);
@@ -892,7 +901,7 @@ static long mtd_compat_ioctl(struct file *file, unsigned int cmd,
                 break;
         }
         default:
-                ret = mtd_ioctl(inode, file, cmd, (unsigned long)argp);
+                ret = mtd_ioctl(file, cmd, (unsigned long)argp);
         }
 
         unlock_kernel();
@@ -960,7 +969,7 @@ static const struct file_operations mtd_fops = {
         .llseek         = mtd_lseek,
         .read           = mtd_read,
         .write          = mtd_write,
-        .ioctl          = mtd_ioctl,
+        .unlocked_ioctl = mtd_unlocked_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl   = mtd_compat_ioctl,
 #endif
diff --git a/drivers/pcmcia/pcmcia_ioctl.c b/drivers/pcmcia/pcmcia_ioctl.c
index ef0c5f133691..d007a2a03830 100644
--- a/drivers/pcmcia/pcmcia_ioctl.c
+++ b/drivers/pcmcia/pcmcia_ioctl.c
@@ -813,8 +813,7 @@ static u_int ds_poll(struct file *file, poll_table *wait)
 
 /*====================================================================*/
 
-static int ds_ioctl(struct inode *inode, struct file *file,
-                    u_int cmd, u_long arg)
+static int ds_ioctl(struct file *file, u_int cmd, u_long arg)
 {
     struct pcmcia_socket *s;
     void __user *uarg = (char __user *)arg;
@@ -1021,13 +1020,25 @@ free_out:
     return err;
 } /* ds_ioctl */
 
+static long ds_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = ds_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
+
 /*====================================================================*/
 
 static const struct file_operations ds_fops = {
         .owner          = THIS_MODULE,
         .open           = ds_open,
         .release        = ds_release,
-        .ioctl          = ds_ioctl,
+        .unlocked_ioctl = ds_unlocked_ioctl,
         .read           = ds_read,
         .write          = ds_write,
         .poll           = ds_poll,
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 60fe266f0f49..038095d99976 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -623,7 +623,7 @@ static ssize_t wdt_read(struct file *file, char __user *buf,
  *      according to their available features. We only actually usefully support
  *      querying capabilities and current status.
  */
-static int wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+static int wdt_ioctl(struct file *file, unsigned int cmd,
                      unsigned long arg)
 {
         int new_margin, rv;
@@ -676,6 +676,18 @@ static int wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
         return -ENOTTY;
 }
 
+static long wdt_unlocked_ioctl(struct file *file, unsigned int cmd,
+                               unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = wdt_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 /**
  *      wdt_open:
  *      @inode: inode of device
@@ -736,7 +748,7 @@ static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
 static const struct file_operations wdt_fops = {
         .owner  = THIS_MODULE,
         .read   = wdt_read,
-        .ioctl  = wdt_ioctl,
+        .unlocked_ioctl = wdt_unlocked_ioctl,
         .write  = wdt_write,
         .open   = wdt_open,
         .release = wdt_release,
diff --git a/drivers/sbus/char/openprom.c b/drivers/sbus/char/openprom.c
index fc2f676e984d..d53e62ab09da 100644
--- a/drivers/sbus/char/openprom.c
+++ b/drivers/sbus/char/openprom.c
@@ -298,9 +298,9 @@ static int opromgetbootargs(void __user *argp, struct openpromio *op, int bufsiz
 /*
  *      SunOS and Solaris /dev/openprom ioctl calls.
  */
-static int openprom_sunos_ioctl(struct inode * inode, struct file * file,
-                                unsigned int cmd, unsigned long arg,
-                                struct device_node *dp)
+static long openprom_sunos_ioctl(struct file * file,
+                                 unsigned int cmd, unsigned long arg,
+                                 struct device_node *dp)
 {
         DATA *data = file->private_data;
         struct openpromio *opp = NULL;
@@ -316,6 +316,8 @@ static int openprom_sunos_ioctl(struct inode * inode, struct file * file,
         if (bufsize < 0)
                 return bufsize;
 
+        lock_kernel();
+
         switch (cmd) {
         case OPROMGETOPT:
         case OPROMGETPROP:
@@ -365,6 +367,8 @@ static int openprom_sunos_ioctl(struct inode * inode, struct file * file,
         }
 
         kfree(opp);
+        unlock_kernel();
+
         return error;
 }
 
@@ -547,13 +551,14 @@ static int opiocgetnext(unsigned int cmd, void __user *argp)
         return 0;
 }
 
-static int openprom_bsd_ioctl(struct inode * inode, struct file * file,
+static int openprom_bsd_ioctl(struct file * file,
                               unsigned int cmd, unsigned long arg)
 {
         DATA *data = (DATA *) file->private_data;
         void __user *argp = (void __user *)arg;
         int err;
 
+        lock_kernel();
         switch (cmd) {
         case OPIOCGET:
                 err = opiocget(argp, data);
@@ -570,10 +575,10 @@ static int openprom_bsd_ioctl(struct inode * inode, struct file * file,
         case OPIOCGETOPTNODE:
                 BUILD_BUG_ON(sizeof(phandle) != sizeof(int));
 
+                err = 0;
                 if (copy_to_user(argp, &options_node->phandle, sizeof(phandle)))
-                        return -EFAULT;
-
-                return 0;
+                        err = -EFAULT;
+                break;
 
         case OPIOCGETNEXT:
         case OPIOCGETCHILD:
@@ -581,9 +586,10 @@ static int openprom_bsd_ioctl(struct inode * inode, struct file * file,
                 break;
 
         default:
-                return -EINVAL;
-
+                err = -EINVAL;
+                break;
         };
+        unlock_kernel();
 
         return err;
 }
@@ -592,8 +598,8 @@ static int openprom_bsd_ioctl(struct inode * inode, struct file * file,
 /*
  *      Handoff control to the correct ioctl handler.
  */
-static int openprom_ioctl(struct inode * inode, struct file * file,
-                          unsigned int cmd, unsigned long arg)
+static long openprom_ioctl(struct file * file,
+                           unsigned int cmd, unsigned long arg)
 {
         DATA *data = (DATA *) file->private_data;
 
@@ -602,14 +608,14 @@ static int openprom_ioctl(struct inode * inode, struct file * file,
         case OPROMNXTOPT:
                 if ((file->f_mode & FMODE_READ) == 0)
                         return -EPERM;
-                return openprom_sunos_ioctl(inode, file, cmd, arg,
+                return openprom_sunos_ioctl(file, cmd, arg,
                                             options_node);
 
         case OPROMSETOPT:
         case OPROMSETOPT2:
                 if ((file->f_mode & FMODE_WRITE) == 0)
                         return -EPERM;
-                return openprom_sunos_ioctl(inode, file, cmd, arg,
+                return openprom_sunos_ioctl(file, cmd, arg,
                                             options_node);
 
         case OPROMNEXT:
@@ -618,7 +624,7 @@ static int openprom_ioctl(struct inode * inode, struct file * file,
         case OPROMNXTPROP:
                 if ((file->f_mode & FMODE_READ) == 0)
                         return -EPERM;
-                return openprom_sunos_ioctl(inode, file, cmd, arg,
+                return openprom_sunos_ioctl(file, cmd, arg,
                                             data->current_node);
 
         case OPROMU2P:
@@ -630,7 +636,7 @@ static int openprom_ioctl(struct inode * inode, struct file * file,
         case OPROMPATH2NODE:
                 if ((file->f_mode & FMODE_READ) == 0)
                         return -EPERM;
-                return openprom_sunos_ioctl(inode, file, cmd, arg, NULL);
+                return openprom_sunos_ioctl(file, cmd, arg, NULL);
 
         case OPIOCGET:
         case OPIOCNEXTPROP:
@@ -639,12 +645,12 @@ static int openprom_ioctl(struct inode * inode, struct file * file,
         case OPIOCGETCHILD:
                 if ((file->f_mode & FMODE_READ) == 0)
                         return -EBADF;
-                return openprom_bsd_ioctl(inode,file,cmd,arg);
+                return openprom_bsd_ioctl(file,cmd,arg);
 
         case OPIOCSET:
                 if ((file->f_mode & FMODE_WRITE) == 0)
                         return -EBADF;
-                return openprom_bsd_ioctl(inode,file,cmd,arg);
+                return openprom_bsd_ioctl(file,cmd,arg);
 
         default:
                 return -EINVAL;
@@ -676,7 +682,7 @@ static long openprom_compat_ioctl(struct file *file, unsigned int cmd,
         case OPROMSETCUR:
         case OPROMPCI2NODE:
         case OPROMPATH2NODE:
-                rval = openprom_ioctl(file->f_path.dentry->d_inode, file, cmd, arg);
+                rval = openprom_ioctl(file, cmd, arg);
                 break;
         }
 
@@ -709,7 +715,7 @@ static int openprom_release(struct inode * inode, struct file * file)
 static const struct file_operations openprom_fops = {
         .owner =        THIS_MODULE,
         .llseek =       no_llseek,
-        .ioctl =        openprom_ioctl,
+        .unlocked_ioctl = openprom_ioctl,
         .compat_ioctl = openprom_compat_ioctl,
         .open =         openprom_open,
         .release =      openprom_release,
diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index 1bb774becf25..e20b7bdd4c78 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -125,7 +125,7 @@ static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_H
 static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id);
 static char *twa_aen_severity_lookup(unsigned char severity_code);
 static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id);
-static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
+static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 static int twa_chrdev_open(struct inode *inode, struct file *file);
 static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host);
 static void twa_free_request_id(TW_Device_Extension *tw_dev,int request_id);
@@ -220,7 +220,7 @@ static struct device_attribute *twa_host_attrs[] = {
 /* File operations struct for character device */
 static const struct file_operations twa_fops = {
         .owner          = THIS_MODULE,
-        .ioctl          = twa_chrdev_ioctl,
+        .unlocked_ioctl = twa_chrdev_ioctl,
         .open           = twa_chrdev_open,
         .release        = NULL
 };
@@ -637,8 +637,9 @@ out:
 } /* End twa_check_srl() */
 
 /* This function handles ioctl for the character device */
-static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
+        struct inode *inode = file->f_path.dentry->d_inode;
         long timeout;
         unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0;
         dma_addr_t dma_handle;
@@ -657,6 +658,8 @@ static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
         int retval = TW_IOCTL_ERROR_OS_EFAULT;
         void __user *argp = (void __user *)arg;
 
+        lock_kernel();
+
         /* Only let one of these through at a time */
         if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) {
                 retval = TW_IOCTL_ERROR_OS_EINTR;
@@ -876,6 +879,7 @@ out3:
 out2:
         mutex_unlock(&tw_dev->ioctl_lock);
 out:
+        unlock_kernel();
         return retval;
 } /* End twa_chrdev_ioctl() */
 
diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c
index d38000db9237..f481e734aad4 100644
--- a/drivers/scsi/3w-sas.c
+++ b/drivers/scsi/3w-sas.c
@@ -750,19 +750,22 @@ static void twl_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_comm
 
 /* This function handles ioctl for the character device
    This interface is used by smartmontools open source software */
-static int twl_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long twl_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
         long timeout;
         unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0;
         dma_addr_t dma_handle;
         int request_id = 0;
         TW_Ioctl_Driver_Command driver_command;
+        struct inode *inode = file->f_dentry->d_inode;
         TW_Ioctl_Buf_Apache *tw_ioctl;
         TW_Command_Full *full_command_packet;
         TW_Device_Extension *tw_dev = twl_device_extension_list[iminor(inode)];
         int retval = -EFAULT;
         void __user *argp = (void __user *)arg;
 
+        lock_kernel();
+
         /* Only let one of these through at a time */
         if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) {
                 retval = -EINTR;
@@ -858,6 +861,7 @@ out3:
 out2:
         mutex_unlock(&tw_dev->ioctl_lock);
 out:
+        unlock_kernel();
         return retval;
 } /* End twl_chrdev_ioctl() */
 
@@ -884,7 +888,7 @@ out:
 /* File operations struct for character device */
 static const struct file_operations twl_fops = {
         .owner          = THIS_MODULE,
-        .ioctl          = twl_chrdev_ioctl,
+        .unlocked_ioctl = twl_chrdev_ioctl,
         .open           = twl_chrdev_open,
         .release        = NULL
 };
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index d119a614bf7d..30d735ad35b5 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -881,7 +881,7 @@ static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which)
 } /* End tw_allocate_memory() */
 
 /* This function handles ioctl for the character device */
-static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long tw_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
         int request_id;
         dma_addr_t dma_handle;
@@ -889,6 +889,7 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
         unsigned long flags;
         unsigned int data_buffer_length = 0;
         unsigned long data_buffer_length_adjusted = 0;
+        struct inode *inode = file->f_dentry->d_inode;
         unsigned long *cpu_addr;
         long timeout;
         TW_New_Ioctl *tw_ioctl;
@@ -899,9 +900,12 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
 
         dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl()\n");
 
+        lock_kernel();
         /* Only let one of these through at a time */
-        if (mutex_lock_interruptible(&tw_dev->ioctl_lock))
+        if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) {
+                unlock_kernel();
                 return -EINTR;
+        }
 
         /* First copy down the buffer length */
         if (copy_from_user(&data_buffer_length, argp, sizeof(unsigned int)))
@@ -1030,6 +1034,7 @@ out2:
         dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, cpu_addr, dma_handle);
 out:
         mutex_unlock(&tw_dev->ioctl_lock);
+        unlock_kernel();
         return retval;
 } /* End tw_chrdev_ioctl() */
 
@@ -1052,7 +1057,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
 /* File operations struct for character device */
 static const struct file_operations tw_fops = {
         .owner          = THIS_MODULE,
-        .ioctl          = tw_chrdev_ioctl,
+        .unlocked_ioctl = tw_chrdev_ioctl,
         .open           = tw_chrdev_open,
         .release        = NULL
 };
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index e9373a2d14fa..33898b61fdb5 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -705,12 +705,17 @@ static int aac_cfg_open(struct inode *inode, struct file *file)
  *      Bugs: Needs to handle hot plugging
  */
 
-static int aac_cfg_ioctl(struct inode *inode, struct file *file,
+static long aac_cfg_ioctl(struct file *file,
                 unsigned int cmd, unsigned long arg)
 {
+        int ret;
         if (!capable(CAP_SYS_RAWIO))
                 return -EPERM;
-        return aac_do_ioctl(file->private_data, cmd, (void __user *)arg);
+        lock_kernel();
+        ret = aac_do_ioctl(file->private_data, cmd, (void __user *)arg);
+        unlock_kernel();
+
+        return ret;
 }
 
 #ifdef CONFIG_COMPAT
@@ -1029,7 +1034,7 @@ ssize_t aac_get_serial_number(struct device *device, char *buf)
 
 static const struct file_operations aac_cfg_fops = {
         .owner          = THIS_MODULE,
-        .ioctl          = aac_cfg_ioctl,
+        .unlocked_ioctl = aac_cfg_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl   = aac_compat_cfg_ioctl,
 #endif
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index 0435d044c9da..b0c576f84b28 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -114,12 +114,13 @@ static int hba_count = 0;
 
 static struct class *adpt_sysfs_class;
 
+static long adpt_unlocked_ioctl(struct file *, unsigned int, unsigned long);
 #ifdef CONFIG_COMPAT
 static long compat_adpt_ioctl(struct file *, unsigned int, unsigned long);
 #endif
 
 static const struct file_operations adpt_fops = {
-        .ioctl          = adpt_ioctl,
+        .unlocked_ioctl = adpt_unlocked_ioctl,
         .open           = adpt_open,
         .release        = adpt_close,
 #ifdef CONFIG_COMPAT
@@ -2069,8 +2070,7 @@ static int adpt_system_info(void __user *buffer)
         return 0;
 }
 
-static int adpt_ioctl(struct inode *inode, struct file *file, uint cmd,
-              ulong arg)
+static int adpt_ioctl(struct inode *inode, struct file *file, uint cmd, ulong arg)
 {
         int minor;
         int error = 0;
@@ -2153,6 +2153,20 @@ static int adpt_ioctl(struct inode *inode, struct file *file, uint cmd,
         return error;
 }
 
+static long adpt_unlocked_ioctl(struct file *file, uint cmd, ulong arg)
+{
+        struct inode *inode;
+        long ret;
+ 
+        inode = file->f_dentry->d_inode;
+ 
+        lock_kernel();
+        ret = adpt_ioctl(inode, file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 #ifdef CONFIG_COMPAT
 static long compat_adpt_ioctl(struct file *file,
                                 unsigned int cmd, unsigned long arg)
diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index a765fe7a55c3..f672d6213eea 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -180,8 +180,8 @@ static const char *gdth_ctr_name(gdth_ha_str *ha);
 
 static int gdth_open(struct inode *inode, struct file *filep);
 static int gdth_close(struct inode *inode, struct file *filep);
-static int gdth_ioctl(struct inode *inode, struct file *filep,
-                      unsigned int cmd, unsigned long arg);
+static long gdth_unlocked_ioctl(struct file *filep, unsigned int cmd,
+                                unsigned long arg);
 
 static void gdth_flush(gdth_ha_str *ha);
 static int gdth_queuecommand(Scsi_Cmnd *scp,void (*done)(Scsi_Cmnd *));
@@ -369,7 +369,7 @@ MODULE_LICENSE("GPL");
 
 /* ioctl interface */
 static const struct file_operations gdth_fops = {
-    .ioctl   = gdth_ioctl,
+    .unlocked_ioctl   = gdth_unlocked_ioctl,
     .open    = gdth_open,
     .release = gdth_close,
 };
@@ -4462,8 +4462,7 @@ free_fail:
     return rc;
 }
   
-static int gdth_ioctl(struct inode *inode, struct file *filep,
-                      unsigned int cmd, unsigned long arg)
+static int gdth_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 {
     gdth_ha_str *ha; 
     Scsi_Cmnd *scp;
@@ -4611,6 +4610,17 @@ static int gdth_ioctl(struct inode *inode, struct file *filep,
     return 0;
 }
 
+static long gdth_unlocked_ioctl(struct file *file, unsigned int cmd,
+                                unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = gdth_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
 
 /* flush routine */
 static void gdth_flush(gdth_ha_str *ha)
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 4bf7edca9e69..0b6e3228610a 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -91,12 +91,15 @@ static struct proc_dir_entry *mega_proc_dir_entry;
 /* For controller re-ordering */
 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
 
+static long
+megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
+
 /*
  * The File Operations structure for the serial/ioctl interface of the driver
  */
 static const struct file_operations megadev_fops = {
         .owner          = THIS_MODULE,
-        .ioctl          = megadev_ioctl,
+        .unlocked_ioctl = megadev_unlocked_ioctl,
         .open           = megadev_open,
 };
 
@@ -3302,8 +3305,7 @@ megadev_open (struct inode *inode, struct file *filep)
  * controller.
  */
 static int
-megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
-                unsigned long arg)
+megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 {
         adapter_t       *adapter;
         nitioctl_t      uioc;
@@ -3694,6 +3696,18 @@ freemem_and_return:
         return 0;
 }
 
+static long
+megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = megadev_ioctl(filep, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 /**
  * mega_m_to_n()
  * @arg - user address
diff --git a/drivers/scsi/megaraid.h b/drivers/scsi/megaraid.h
index d310f49d077e..2b4a048cadf1 100644
--- a/drivers/scsi/megaraid.h
+++ b/drivers/scsi/megaraid.h
@@ -1013,8 +1013,7 @@ static void mega_8_to_40ld (mraid_inquiry *inquiry,
                 mega_inquiry3 *enquiry3, mega_product_info *);
 
 static int megadev_open (struct inode *, struct file *);
-static int megadev_ioctl (struct inode *, struct file *, unsigned int,
-                unsigned long);
+static int megadev_ioctl (struct file *, unsigned int, unsigned long);
 static int mega_m_to_n(void __user *, nitioctl_t *);
 static int mega_n_to_m(void __user *, megacmd_t *);
 
diff --git a/drivers/scsi/megaraid/megaraid_mm.c b/drivers/scsi/megaraid/megaraid_mm.c
index 36e0b7d05c1d..41f82f76d884 100644
--- a/drivers/scsi/megaraid/megaraid_mm.c
+++ b/drivers/scsi/megaraid/megaraid_mm.c
@@ -22,7 +22,7 @@
 
 // Entry points for char node driver
 static int mraid_mm_open(struct inode *, struct file *);
-static int mraid_mm_ioctl(struct inode *, struct file *, uint, unsigned long);
+static long mraid_mm_unlocked_ioctl(struct file *, uint, unsigned long);
 
 
 // routines to convert to and from the old the format
@@ -70,7 +70,7 @@ static wait_queue_head_t wait_q;
 
 static const struct file_operations lsi_fops = {
         .open   = mraid_mm_open,
-        .ioctl  = mraid_mm_ioctl,
+        .unlocked_ioctl = mraid_mm_unlocked_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl = mraid_mm_compat_ioctl,
 #endif
@@ -110,8 +110,7 @@ mraid_mm_open(struct inode *inode, struct file *filep)
  * @arg         : user ioctl packet
  */
 static int
-mraid_mm_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
-                                                        unsigned long arg)
+mraid_mm_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 {
         uioc_t          *kioc;
         char            signature[EXT_IOCTL_SIGN_SZ]    = {0};
@@ -218,6 +217,19 @@ mraid_mm_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
         return rval;
 }
 
+static long
+mraid_mm_unlocked_ioctl(struct file *filep, unsigned int cmd,
+                        unsigned long arg)
+{
+        int err;
+
+        /* inconsistant: mraid_mm_compat_ioctl doesn't take the BKL */
+        lock_kernel();
+        err = mraid_mm_ioctl(filep, cmd, arg);
+        unlock_kernel();
+
+        return err;
+}
 
 /**
  * mraid_mm_get_adapter - Returns corresponding adapters for the mimd packet
@@ -1225,7 +1237,7 @@ mraid_mm_compat_ioctl(struct file *filep, unsigned int cmd,
 {
         int err;
 
-        err = mraid_mm_ioctl(NULL, filep, cmd, arg);
+        err = mraid_mm_ioctl(filep, cmd, arg);
 
         return err;
 }
diff --git a/drivers/scsi/osst.c b/drivers/scsi/osst.c
index b219118f8bd6..8dbf1c3afb7b 100644
--- a/drivers/scsi/osst.c
+++ b/drivers/scsi/osst.c
@@ -4932,7 +4932,7 @@ static int os_scsi_tape_close(struct inode * inode, struct file * filp)
 
 
 /* The ioctl command */
-static int osst_ioctl(struct inode * inode,struct file * file,
+static long osst_ioctl(struct file * file,
          unsigned int cmd_in, unsigned long arg)
 {
         int                   i, cmd_nr, cmd_type, blk, retval = 0;
@@ -4943,8 +4943,11 @@ static int osst_ioctl(struct inode * inode,struct file * file,
         char                * name  = tape_name(STp);
         void        __user  * p     = (void __user *)arg;
 
-        if (mutex_lock_interruptible(&STp->lock))
+        lock_kernel();
+        if (mutex_lock_interruptible(&STp->lock)) {
+                unlock_kernel();
                 return -ERESTARTSYS;
+        }
 
 #if DEBUG
         if (debugging && !STp->in_use) {
@@ -5256,12 +5259,15 @@ static int osst_ioctl(struct inode * inode,struct file * file,
 
         mutex_unlock(&STp->lock);
 
-        return scsi_ioctl(STp->device, cmd_in, p);
+        retval = scsi_ioctl(STp->device, cmd_in, p);
+        unlock_kernel();
+        return retval;
 
 out:
         if (SRpnt) osst_release_request(SRpnt);
 
         mutex_unlock(&STp->lock);
+        unlock_kernel();
 
         return retval;
 }
@@ -5613,7 +5619,7 @@ static const struct file_operations osst_fops = {
         .owner =        THIS_MODULE,
         .read =         osst_read,
         .write =        osst_write,
-        .ioctl =        osst_ioctl,
+        .unlocked_ioctl = osst_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl = osst_compat_ioctl,
 #endif
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index dee1c96288d4..ef752b248c4d 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -758,8 +758,7 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
 }
 
 static int
-sg_ioctl(struct inode *inode, struct file *filp,
-         unsigned int cmd_in, unsigned long arg)
+sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
 {
         void __user *p = (void __user *)arg;
         int __user *ip = p;
@@ -1078,6 +1077,18 @@ sg_ioctl(struct inode *inode, struct file *filp,
         }
 }
 
+static long
+sg_unlocked_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = sg_ioctl(filp, cmd_in, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 #ifdef CONFIG_COMPAT
 static long sg_compat_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
 {
@@ -1322,7 +1333,7 @@ static const struct file_operations sg_fops = {
         .read = sg_read,
         .write = sg_write,
         .poll = sg_poll,
-        .ioctl = sg_ioctl,
+        .unlocked_ioctl = sg_unlocked_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl = sg_compat_ioctl,
 #endif
diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c
index e7fa3644ba6a..61c76b13f0f1 100644
--- a/drivers/usb/mon/mon_bin.c
+++ b/drivers/usb/mon/mon_bin.c
@@ -954,8 +954,7 @@ static int mon_bin_queued(struct mon_reader_bin *rp)
 
 /*
  */
-static int mon_bin_ioctl(struct inode *inode, struct file *file,
-    unsigned int cmd, unsigned long arg)
+static int mon_bin_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
         struct mon_reader_bin *rp = file->private_data;
         // struct mon_bus* mbus = rp->r.m_bus;
@@ -1095,6 +1094,19 @@ static int mon_bin_ioctl(struct inode *inode, struct file *file,
         return ret;
 }
 
+static long mon_bin_unlocked_ioctl(struct file *file, unsigned int cmd,
+                                   unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = mon_bin_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
+
 #ifdef CONFIG_COMPAT
 static long mon_bin_compat_ioctl(struct file *file,
     unsigned int cmd, unsigned long arg)
@@ -1148,14 +1160,13 @@ static long mon_bin_compat_ioctl(struct file *file,
                 return 0;
 
         case MON_IOCG_STATS:
-                return mon_bin_ioctl(NULL, file, cmd,
-                                            (unsigned long) compat_ptr(arg));
+                return mon_bin_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
 
         case MON_IOCQ_URB_LEN:
         case MON_IOCQ_RING_SIZE:
         case MON_IOCT_RING_SIZE:
         case MON_IOCH_MFLUSH:
-                return mon_bin_ioctl(NULL, file, cmd, arg);
+                return mon_bin_ioctl(file, cmd, arg);
 
         default:
                 ;
@@ -1239,7 +1250,7 @@ static const struct file_operations mon_fops_binary = {
         .read =         mon_bin_read,
         /* .write =     mon_text_write, */
         .poll =         mon_bin_poll,
-        .ioctl =        mon_bin_ioctl,
+        .unlocked_ioctl = mon_bin_unlocked_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl = mon_bin_compat_ioctl,
 #endif
diff --git a/drivers/usb/mon/mon_stat.c b/drivers/usb/mon/mon_stat.c
index 1becdc3837e6..8ec94f15a738 100644
--- a/drivers/usb/mon/mon_stat.c
+++ b/drivers/usb/mon/mon_stat.c
@@ -11,6 +11,7 @@
 #include <linux/slab.h>
 #include <linux/usb.h>
 #include <linux/fs.h>
+#include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 
 #include "usb_mon.h"
@@ -63,6 +64,6 @@ const struct file_operations mon_fops_stat = {
         .read =         mon_stat_read,
         /* .write =     mon_stat_write, */
         /* .poll =              mon_stat_poll, */
-        /* .ioctl =     mon_stat_ioctl, */
+        /* .unlocked_ioctl =    mon_stat_ioctl, */
         .release =      mon_stat_release,
 };
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index e8e5e63ac950..db4117ed7803 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -18,13 +18,14 @@
 #include <linux/slab.h>
 #include <linux/param.h>
 #include <linux/time.h>
+#include <linux/smp_lock.h>
 #include "autofs_i.h"
 
 static int autofs4_dir_symlink(struct inode *,struct dentry *,const char *);
 static int autofs4_dir_unlink(struct inode *,struct dentry *);
 static int autofs4_dir_rmdir(struct inode *,struct dentry *);
 static int autofs4_dir_mkdir(struct inode *,struct dentry *,int);
-static int autofs4_root_ioctl(struct inode *, struct file *,unsigned int,unsigned long);
+static long autofs4_root_ioctl(struct file *,unsigned int,unsigned long);
 static int autofs4_dir_open(struct inode *inode, struct file *file);
 static struct dentry *autofs4_lookup(struct inode *,struct dentry *, struct nameidata *);
 static void *autofs4_follow_link(struct dentry *, struct nameidata *);
@@ -38,7 +39,7 @@ const struct file_operations autofs4_root_operations = {
         .read           = generic_read_dir,
         .readdir        = dcache_readdir,
         .llseek         = dcache_dir_lseek,
-        .ioctl          = autofs4_root_ioctl,
+        .unlocked_ioctl = autofs4_root_ioctl,
 };
 
 const struct file_operations autofs4_dir_operations = {
@@ -902,8 +903,8 @@ int is_autofs4_dentry(struct dentry *dentry)
  * ioctl()'s on the root directory is the chief method for the daemon to
  * generate kernel reactions
  */
-static int autofs4_root_ioctl(struct inode *inode, struct file *filp,
-                             unsigned int cmd, unsigned long arg)
+static int autofs4_root_ioctl_unlocked(struct inode *inode, struct file *filp,
+                                       unsigned int cmd, unsigned long arg)
 {
         struct autofs_sb_info *sbi = autofs4_sbi(inode->i_sb);
         void __user *p = (void __user *)arg;
@@ -947,3 +948,16 @@ static int autofs4_root_ioctl(struct inode *inode, struct file *filp,
                 return -ENOSYS;
         }
 }
+
+static long autofs4_root_ioctl(struct file *filp,
+                               unsigned int cmd, unsigned long arg)
+{
+        long ret;
+        struct inode *inode = filp->f_dentry->d_inode;
+
+        lock_kernel();
+        ret = autofs4_root_ioctl_unlocked(inode, filp, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
diff --git a/fs/coda/pioctl.c b/fs/coda/pioctl.c
index 773f2ce9aa06..ca25d96d45c9 100644
--- a/fs/coda/pioctl.c
+++ b/fs/coda/pioctl.c
@@ -1,6 +1,6 @@
 /*
  * Pioctl operations for Coda.
- * Original version: (C) 1996 Peter Braam 
+ * Original version: (C) 1996 Peter Braam
  * Rewritten for Linux 2.1: (C) 1997 Carnegie Mellon University
  *
  * Carnegie Mellon encourages users of this code to contribute improvements
@@ -23,21 +23,22 @@
 #include <linux/coda_fs_i.h>
 #include <linux/coda_psdev.h>
 
+#include <linux/smp_lock.h>
+
 /* pioctl ops */
 static int coda_ioctl_permission(struct inode *inode, int mask);
-static int coda_pioctl(struct inode * inode, struct file * filp, 
-                       unsigned int cmd, unsigned long user_data);
+static long coda_pioctl(struct file *filp, unsigned int cmd,
+                        unsigned long user_data);
 
 /* exported from this file */
-const struct inode_operations coda_ioctl_inode_operations =
-{
+const struct inode_operations coda_ioctl_inode_operations = {
         .permission     = coda_ioctl_permission,
         .setattr        = coda_setattr,
 };
 
 const struct file_operations coda_ioctl_operations = {
         .owner          = THIS_MODULE,
-        .ioctl          = coda_pioctl,
+        .unlocked_ioctl = coda_pioctl,
 };
 
 /* the coda pioctl inode ops */
@@ -46,48 +47,53 @@ static int coda_ioctl_permission(struct inode *inode, int mask)
         return (mask & MAY_EXEC) ? -EACCES : 0;
 }
 
-static int coda_pioctl(struct inode * inode, struct file * filp, 
-                       unsigned int cmd, unsigned long user_data)
+static long coda_pioctl(struct file *filp, unsigned int cmd,
+                        unsigned long user_data)
 {
         struct path path;
-        int error;
+        int error;
         struct PioctlData data;
-        struct inode *target_inode = NULL;
-        struct coda_inode_info *cnp;
+        struct inode *inode = filp->f_dentry->d_inode;
+        struct inode *target_inode = NULL;
+        struct coda_inode_info *cnp;
 
-        /* get the Pioctl data arguments from user space */
-        if (copy_from_user(&data, (void __user *)user_data, sizeof(data))) {
-            return -EINVAL;
-        }
-       
-        /* 
-         * Look up the pathname. Note that the pathname is in 
-         * user memory, and namei takes care of this
-         */
-        if (data.follow) {
-                error = user_path(data.path, &path);
-        } else {
-                error = user_lpath(data.path, &path);
+        lock_kernel();
+
+        /* get the Pioctl data arguments from user space */
+        if (copy_from_user(&data, (void __user *)user_data, sizeof(data))) {
+                error = -EINVAL;
+                goto out;
         }
-                
-        if ( error ) {
-                return error;
-        } else {
+
+        /*
+         * Look up the pathname. Note that the pathname is in
+         * user memory, and namei takes care of this
+         */
+        if (data.follow)
+                error = user_path(data.path, &path);
+        else
+                error = user_lpath(data.path, &path);
+
+        if (error)
+                goto out;
+        else
                 target_inode = path.dentry->d_inode;
-        }
-        
+
         /* return if it is not a Coda inode */
-        if ( target_inode->i_sb != inode->i_sb ) {
+        if (target_inode->i_sb != inode->i_sb) {
                 path_put(&path);
-                return  -EINVAL;
+                error = -EINVAL;
+                goto out;
         }
 
         /* now proceed to make the upcall */
-        cnp = ITOC(target_inode);
+        cnp = ITOC(target_inode);
 
         error = venus_pioctl(inode->i_sb, &(cnp->c_fid), cmd, &data);
 
         path_put(&path);
-        return error;
-}
 
+out:
+        unlock_kernel();
+        return error;
+}
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index be4392ca2098..66b9cf79c5ba 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -73,8 +73,7 @@ static unsigned int coda_psdev_poll(struct file *file, poll_table * wait)
         return mask;
 }
 
-static int coda_psdev_ioctl(struct inode * inode, struct file * filp, 
-                            unsigned int cmd, unsigned long arg)
+static long coda_psdev_ioctl(struct file * filp, unsigned int cmd, unsigned long arg)
 {
         unsigned int data;
 
@@ -344,7 +343,7 @@ static const struct file_operations coda_psdev_fops = {
         .read           = coda_psdev_read,
         .write          = coda_psdev_write,
         .poll           = coda_psdev_poll,
-        .ioctl          = coda_psdev_ioctl,
+        .unlocked_ioctl = coda_psdev_ioctl,
         .open           = coda_psdev_open,
         .release        = coda_psdev_release,
 };
diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index 5f4023678251..764fd1bdca88 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -494,7 +494,7 @@ const struct inode_operations hfsplus_dir_inode_operations = {
 const struct file_operations hfsplus_dir_operations = {
         .read           = generic_read_dir,
         .readdir        = hfsplus_readdir,
-        .ioctl          = hfsplus_ioctl,
+        .unlocked_ioctl = hfsplus_ioctl,
         .llseek         = generic_file_llseek,
         .release        = hfsplus_dir_release,
 };
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index 5c10d803d9df..6505c30ad965 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -337,8 +337,7 @@ struct inode *hfsplus_new_inode(struct super_block *, int);
 void hfsplus_delete_inode(struct inode *);
 
 /* ioctl.c */
-int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
-                  unsigned long arg);
+long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
 int hfsplus_setxattr(struct dentry *dentry, const char *name,
                      const void *value, size_t size, int flags);
 ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index 1bcf597c0562..9bbb82924a22 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -285,7 +285,7 @@ static const struct file_operations hfsplus_file_operations = {
         .fsync          = file_fsync,
         .open           = hfsplus_file_open,
         .release        = hfsplus_file_release,
-        .ioctl          = hfsplus_ioctl,
+        .unlocked_ioctl = hfsplus_ioctl,
 };
 
 struct inode *hfsplus_new_inode(struct super_block *sb, int mode)
diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c
index f457d2ca51ab..ac405f099026 100644
--- a/fs/hfsplus/ioctl.c
+++ b/fs/hfsplus/ioctl.c
@@ -17,14 +17,16 @@
 #include <linux/mount.h>
 #include <linux/sched.h>
 #include <linux/xattr.h>
+#include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 #include "hfsplus_fs.h"
 
-int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
-                  unsigned long arg)
+long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
+        struct inode *inode = filp->f_path.dentry->d_inode;
         unsigned int flags;
 
+        lock_kernel();
         switch (cmd) {
         case HFSPLUS_IOC_EXT2_GETFLAGS:
                 flags = 0;
@@ -38,8 +40,10 @@ int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
         case HFSPLUS_IOC_EXT2_SETFLAGS: {
                 int err = 0;
                 err = mnt_want_write(filp->f_path.mnt);
-                if (err)
+                if (err) {
+                        unlock_kernel();
                         return err;
+                }
 
                 if (!is_owner_or_cap(inode)) {
                         err = -EACCES;
@@ -85,9 +89,11 @@ int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
                 mark_inode_dirty(inode);
 setflags_out:
                 mnt_drop_write(filp->f_path.mnt);
+                unlock_kernel();
                 return err;
         }
         default:
+                unlock_kernel();
                 return -ENOTTY;
         }
 }
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 7edfcd4d5e52..92dde6f8d893 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -51,7 +51,7 @@ const struct file_operations ncp_dir_operations =
 {
         .read           = generic_read_dir,
         .readdir        = ncp_readdir,
-        .ioctl          = ncp_ioctl,
+        .unlocked_ioctl = ncp_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl   = ncp_compat_ioctl,
 #endif
diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c
index 1daabb90e0a5..b93870892892 100644
--- a/fs/ncpfs/file.c
+++ b/fs/ncpfs/file.c
@@ -295,7 +295,7 @@ const struct file_operations ncp_file_operations =
         .llseek         = ncp_remote_llseek,
         .read           = ncp_file_read,
         .write          = ncp_file_write,
-        .ioctl          = ncp_ioctl,
+        .unlocked_ioctl = ncp_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl   = ncp_compat_ioctl,
 #endif
diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index 60a5e2864ea8..023c03d02070 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -20,6 +20,7 @@
 #include <linux/smp_lock.h>
 #include <linux/vmalloc.h>
 #include <linux/sched.h>
+#include <linux/smp_lock.h>
 
 #include <linux/ncp_fs.h>
 
@@ -261,9 +262,9 @@ ncp_get_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg)
 }
 #endif /* CONFIG_NCPFS_NLS */
 
-static int __ncp_ioctl(struct inode *inode, struct file *filp,
-              unsigned int cmd, unsigned long arg)
+static long __ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
+        struct inode *inode = filp->f_dentry->d_inode;
         struct ncp_server *server = NCP_SERVER(inode);
         int result;
         struct ncp_ioctl_request request;
@@ -841,11 +842,11 @@ static int ncp_ioctl_need_write(unsigned int cmd)
         }
 }
 
-int ncp_ioctl(struct inode *inode, struct file *filp,
-              unsigned int cmd, unsigned long arg)
+long ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
-        int ret;
+        long ret;
 
+        lock_kernel();
         if (ncp_ioctl_need_write(cmd)) {
                 /*
                  * inside the ioctl(), any failures which
@@ -853,24 +854,28 @@ int ncp_ioctl(struct inode *inode, struct file *filp,
                  * -EACCESS, so it seems consistent to keep
                  *  that here.
                  */
-                if (mnt_want_write(filp->f_path.mnt))
-                        return -EACCES;
+                if (mnt_want_write(filp->f_path.mnt)) {
+                        ret = -EACCES;
+                        goto out;
+                }
         }
-        ret = __ncp_ioctl(inode, filp, cmd, arg);
+        ret = __ncp_ioctl(filp, cmd, arg);
         if (ncp_ioctl_need_write(cmd))
                 mnt_drop_write(filp->f_path.mnt);
+
+out:
+        unlock_kernel();
         return ret;
 }
 
 #ifdef CONFIG_COMPAT
 long ncp_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-        struct inode *inode = file->f_path.dentry->d_inode;
-        int ret;
+        long ret;
 
         lock_kernel();
         arg = (unsigned long) compat_ptr(arg);
-        ret = ncp_ioctl(inode, file, cmd, arg);
+        ret = ncp_ioctl(file, cmd, arg);
         unlock_kernel();
         return ret;
 }
diff --git a/fs/smbfs/dir.c b/fs/smbfs/dir.c
index 3e4803b4427e..6c978428892d 100644
--- a/fs/smbfs/dir.c
+++ b/fs/smbfs/dir.c
@@ -39,7 +39,7 @@ const struct file_operations smb_dir_operations =
 {
         .read           = generic_read_dir,
         .readdir        = smb_readdir,
-        .ioctl          = smb_ioctl,
+        .unlocked_ioctl = smb_ioctl,
         .open           = smb_dir_open,
 };
 
diff --git a/fs/smbfs/file.c b/fs/smbfs/file.c
index dbf6548bbf06..84ecf0e43f91 100644
--- a/fs/smbfs/file.c
+++ b/fs/smbfs/file.c
@@ -437,7 +437,7 @@ const struct file_operations smb_file_operations =
         .aio_read       = smb_file_aio_read,
         .write          = do_sync_write,
         .aio_write      = smb_file_aio_write,
-        .ioctl          = smb_ioctl,
+        .unlocked_ioctl = smb_ioctl,
         .mmap           = smb_file_mmap,
         .open           = smb_file_open,
         .release        = smb_file_release,
diff --git a/fs/smbfs/ioctl.c b/fs/smbfs/ioctl.c
index dbae1f8ea26f..07215312ad39 100644
--- a/fs/smbfs/ioctl.c
+++ b/fs/smbfs/ioctl.c
@@ -13,6 +13,7 @@
 #include <linux/time.h>
 #include <linux/mm.h>
 #include <linux/highuid.h>
+#include <linux/smp_lock.h>
 #include <linux/net.h>
 
 #include <linux/smb_fs.h>
@@ -22,14 +23,14 @@
 
 #include "proto.h"
 
-int
-smb_ioctl(struct inode *inode, struct file *filp,
-          unsigned int cmd, unsigned long arg)
+long
+smb_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
-        struct smb_sb_info *server = server_from_inode(inode);
+        struct smb_sb_info *server = server_from_inode(filp->f_path.dentry->d_inode);
         struct smb_conn_opt opt;
         int result = -EINVAL;
 
+        lock_kernel();
         switch (cmd) {
                 uid16_t uid16;
                 uid_t uid32;
@@ -62,6 +63,7 @@ smb_ioctl(struct inode *inode, struct file *filp,
         default:
                 break;
         }
+        unlock_kernel();
 
         return result;
 }
diff --git a/fs/smbfs/proto.h b/fs/smbfs/proto.h
index 03f456c1b7d4..05939a6f43e6 100644
--- a/fs/smbfs/proto.h
+++ b/fs/smbfs/proto.h
@@ -67,7 +67,7 @@ extern const struct address_space_operations smb_file_aops;
 extern const struct file_operations smb_file_operations;
 extern const struct inode_operations smb_file_inode_operations;
 /* ioctl.c */
-extern int smb_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
+extern long smb_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
 /* smbiod.c */
 extern void smbiod_wake_up(void);
 extern int smbiod_register_server(struct smb_sb_info *server);
diff --git a/include/linux/ncp_fs.h b/include/linux/ncp_fs.h
index 30b06c893944..4522aed00906 100644
--- a/include/linux/ncp_fs.h
+++ b/include/linux/ncp_fs.h
@@ -210,7 +210,7 @@ int ncp_date_dos2unix(__le16 time, __le16 date);
 void ncp_date_unix2dos(int unix_date, __le16 * time, __le16 * date);
 
 /* linux/fs/ncpfs/ioctl.c */
-int ncp_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
+long ncp_ioctl(struct file *, unsigned int, unsigned long);
 long ncp_compat_ioctl(struct file *, unsigned int, unsigned long);
 
 /* linux/fs/ncpfs/sock.c */
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index c2173ebdb33c..58de76c8540c 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -34,6 +34,7 @@
 #include <linux/sunrpc/cache.h>
 #include <linux/sunrpc/stats.h>
 #include <linux/sunrpc/rpc_pipe_fs.h>
+#include <linux/smp_lock.h>
 
 #define  RPCDBG_FACILITY RPCDBG_CACHE
 
@@ -1545,12 +1546,18 @@ static unsigned int cache_poll_pipefs(struct file *filp, poll_table *wait)
         return cache_poll(filp, wait, cd);
 }
 
-static int cache_ioctl_pipefs(struct inode *inode, struct file *filp,
+static long cache_ioctl_pipefs(struct file *filp,
                               unsigned int cmd, unsigned long arg)
 {
+        struct inode *inode = filp->f_dentry->d_inode;
         struct cache_detail *cd = RPC_I(inode)->private;
+        long ret;
 
-        return cache_ioctl(inode, filp, cmd, arg, cd);
+        lock_kernel();
+        ret = cache_ioctl(inode, filp, cmd, arg, cd);
+        unlock_kernel();
+
+        return ret;
 }
 
 static int cache_open_pipefs(struct inode *inode, struct file *filp)
@@ -1573,7 +1580,7 @@ const struct file_operations cache_file_operations_pipefs = {
         .read           = cache_read_pipefs,
         .write          = cache_write_pipefs,
         .poll           = cache_poll_pipefs,
-        .ioctl          = cache_ioctl_pipefs, /* for FIONREAD */
+        .unlocked_ioctl = cache_ioctl_pipefs, /* for FIONREAD */
         .open           = cache_open_pipefs,
         .release        = cache_release_pipefs,
 };
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 20e30c6f8355..95ccbcf45d3e 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -27,6 +27,7 @@
 #include <linux/workqueue.h>
 #include <linux/sunrpc/rpc_pipe_fs.h>
 #include <linux/sunrpc/cache.h>
+#include <linux/smp_lock.h>
 
 static struct vfsmount *rpc_mount __read_mostly;
 static int rpc_mount_count;
@@ -309,8 +310,7 @@ rpc_pipe_poll(struct file *filp, struct poll_table_struct *wait)
 }
 
 static int
-rpc_pipe_ioctl(struct inode *ino, struct file *filp,
-                unsigned int cmd, unsigned long arg)
+rpc_pipe_ioctl_unlocked(struct file *filp, unsigned int cmd, unsigned long arg)
 {
         struct rpc_inode *rpci = RPC_I(filp->f_path.dentry->d_inode);
         int len;
@@ -331,13 +331,25 @@ rpc_pipe_ioctl(struct inode *ino, struct file *filp,
         }
 }
 
+static long
+rpc_pipe_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+        long ret;
+
+        lock_kernel();
+        ret = rpc_pipe_ioctl_unlocked(filp, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 static const struct file_operations rpc_pipe_fops = {
         .owner          = THIS_MODULE,
         .llseek         = no_llseek,
         .read           = rpc_pipe_read,
         .write          = rpc_pipe_write,
         .poll           = rpc_pipe_poll,
-        .ioctl          = rpc_pipe_ioctl,
+        .unlocked_ioctl = rpc_pipe_ioctl,
         .open           = rpc_pipe_open,
         .release        = rpc_pipe_release,
 };