Use helpers to obtain task pid in printks

The task_struct->pid member is going to be deprecated, so start
using the helpers (task_pid_nr/task_pid_vnr/task_pid_nr_ns) in
the kernel.

The first thing to start with is the pid, printed to dmesg - in
this case we may safely use task_pid_nr(). Besides, printks produce
more (much more) than a half of all the explicit pid usage.

[akpm@linux-foundation.org: git-drm went and changed lots of stuff]
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

47 files changed, 97 insertions, 90 deletions

diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 501edfa807a0..8025d646ab30 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -3367,7 +3367,7 @@ void submit_bio(int rw, struct bio *bio)
                 if (unlikely(block_dump)) {
                         char b[BDEVNAME_SIZE];
                         printk(KERN_DEBUG "%s(%d): %s block %Lu on %s\n",
-                                current->comm, current->pid,
+                        current->comm, task_pid_nr(current),
                                 (rw & WRITE) ? "WRITE" : "READ",
                                 (unsigned long long)bio->bi_sector,
                                 bdevname(bio->bi_bdev,b));
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index cb136a919f2a..ac4a0cb217ab 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -188,7 +188,7 @@ static int sock_xmit(struct nbd_device *lo, int send, void *buf, int size,
                 if (signal_pending(current)) {
                         siginfo_t info;
                         printk(KERN_WARNING "nbd (pid %d: %s) got signal %d\n",
-                                current->pid, current->comm,
+                                task_pid_nr(current), current->comm,
                                 dequeue_signal_lock(current, &current->blocked, &info));
                         result = -EINTR;
                         sock_shutdown(lo, !send);
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index d70745c84250..af0561053167 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -1107,7 +1107,7 @@ int open_for_data(struct cdrom_device_info * cdi)
                        is the default case! */
                     cdinfo(CD_OPEN, "bummer. wrong media type.\n"); 
                     cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
-                                        (unsigned int)current->pid); 
+                                        (unsigned int)task_pid_nr(current));
                     ret=-EMEDIUMTYPE;
                     goto clean_up_and_return;
                 }
diff --git a/drivers/char/drm/drm_bufs.c b/drivers/char/drm/drm_bufs.c
index 856774fbe025..d24a6c2c2c24 100644
--- a/drivers/char/drm/drm_bufs.c
+++ b/drivers/char/drm/drm_bufs.c
@@ -1456,7 +1456,7 @@ int drm_freebufs(struct drm_device *dev, void *data,
                 buf = dma->buflist[idx];
                 if (buf->file_priv != file_priv) {
                         DRM_ERROR("Process %d freeing buffer not owned\n",
-                                  current->pid);
+                                  task_pid_nr(current));
                         return -EINVAL;
                 }
                 drm_free_buffer(dev, buf);
diff --git a/drivers/char/drm/drm_drv.c b/drivers/char/drm/drm_drv.c
index 72668b15e5ce..44a46268b02b 100644
--- a/drivers/char/drm/drm_drv.c
+++ b/drivers/char/drm/drm_drv.c
@@ -463,7 +463,7 @@ int drm_ioctl(struct inode *inode, struct file *filp,
         ++file_priv->ioctl_count;
 
         DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
-                  current->pid, cmd, nr,
+                  task_pid_nr(current), cmd, nr,
                   (long)old_encode_dev(file_priv->head->device),
                   file_priv->authenticated);
 
diff --git a/drivers/char/drm/drm_fops.c b/drivers/char/drm/drm_fops.c
index f383fc37190c..3992f73299cc 100644
--- a/drivers/char/drm/drm_fops.c
+++ b/drivers/char/drm/drm_fops.c
@@ -234,7 +234,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
         if (!drm_cpu_valid())
                 return -EINVAL;
 
-        DRM_DEBUG("pid = %d, minor = %d\n", current->pid, minor);
+        DRM_DEBUG("pid = %d, minor = %d\n", task_pid_nr(current), minor);
 
         priv = drm_alloc(sizeof(*priv), DRM_MEM_FILES);
         if (!priv)
@@ -244,7 +244,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
         filp->private_data = priv;
         priv->filp = filp;
         priv->uid = current->euid;
-        priv->pid = current->pid;
+        priv->pid = task_pid_nr(current);
         priv->minor = minor;
         priv->head = drm_heads[minor];
         priv->ioctl_count = 0;
@@ -339,7 +339,8 @@ int drm_release(struct inode *inode, struct file *filp)
          */
 
         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
-                  current->pid, (long)old_encode_dev(file_priv->head->device),
+                  task_pid_nr(current),
+                  (long)old_encode_dev(file_priv->head->device),
                   dev->open_count);
 
         if (dev->driver->reclaim_buffers_locked && dev->lock.hw_lock) {
diff --git a/drivers/char/drm/drm_lock.c b/drivers/char/drm/drm_lock.c
index c6b73e744d67..bea2a7d5b2b2 100644
--- a/drivers/char/drm/drm_lock.c
+++ b/drivers/char/drm/drm_lock.c
@@ -58,12 +58,12 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 
         if (lock->context == DRM_KERNEL_CONTEXT) {
                 DRM_ERROR("Process %d using kernel context %d\n",
-                          current->pid, lock->context);
+                          task_pid_nr(current), lock->context);
                 return -EINVAL;