2 files changed, 35 insertions, 17 deletions

diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 1e559fba7bdf..576c4fd15463 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -708,17 +708,17 @@ static int compat_blkdev_driver_ioctl(struct inode *inode, struct file *file,
                 return -ENOIOCTLCMD;
         }
 
-        if (disk->fops->unlocked_ioctl)
-                return disk->fops->unlocked_ioctl(file, cmd, arg);
+        if (disk->fops->__unlocked_ioctl)
+                return disk->fops->__unlocked_ioctl(file, cmd, arg);
 
-        if (disk->fops->ioctl) {
+        if (disk->fops->__ioctl) {
                 lock_kernel();
-                ret = disk->fops->ioctl(inode, file, cmd, arg);
+                ret = disk->fops->__ioctl(inode, file, cmd, arg);
                 unlock_kernel();
                 return ret;
         }
 
-        return -ENOTTY;
+        return __blkdev_driver_ioctl(inode->i_bdev, file->f_mode, cmd, arg);
 }
 
 static int compat_blkdev_locked_ioctl(struct inode *inode, struct file *file,
@@ -805,10 +805,11 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
 
         lock_kernel();
         ret = compat_blkdev_locked_ioctl(inode, file, bdev, cmd, arg);
-        /* FIXME: why do we assume -> compat_ioctl needs the BKL? */
-        if (ret == -ENOIOCTLCMD && disk->fops->compat_ioctl)
-                ret = disk->fops->compat_ioctl(file, cmd, arg);
+        if (ret == -ENOIOCTLCMD && disk->fops->__compat_ioctl)
+                ret = disk->fops->__compat_ioctl(file, cmd, arg);
         unlock_kernel();
+        if (ret == -ENOIOCTLCMD && disk->fops->compat_ioctl)
+                ret = disk->fops->compat_ioctl(bdev, file->f_mode, cmd, arg);
 
         if (ret != -ENOIOCTLCMD)
                 return ret;
diff --git a/block/ioctl.c b/block/ioctl.c
index 9a26ace6d042..01ff463bc801 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -269,17 +269,24 @@ int blkdev_driver_ioctl(struct inode *inode, struct file *file,
                         struct gendisk *disk, unsigned cmd, unsigned long arg)
 {
         int ret;
-        if (disk->fops->unlocked_ioctl)
-                return disk->fops->unlocked_ioctl(file, cmd, arg);
+        fmode_t mode = 0;
+        if (file) {
+                mode = file->f_mode;
+                if (file->f_flags & O_NDELAY)
+                        mode |= FMODE_NDELAY_NOW;
+        }
+
+        if (disk->fops->__unlocked_ioctl)
+                return disk->fops->__unlocked_ioctl(file, cmd, arg);
 
-        if (disk->fops->ioctl) {
+        if (disk->fops->__ioctl) {
                 lock_kernel();
-                ret = disk->fops->ioctl(inode, file, cmd, arg);
+                ret = disk->fops->__ioctl(inode, file, cmd, arg);
                 unlock_kernel();
                 return ret;
         }
 
-        return -ENOTTY;
+        return __blkdev_driver_ioctl(inode->i_bdev, mode, cmd, arg);
 }
 EXPORT_SYMBOL_GPL(blkdev_driver_ioctl);
 
@@ -295,12 +302,22 @@ int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,
         fake_file.f_path.dentry = &fake_dentry;
         fake_dentry.d_inode = bdev->bd_inode;
 
-        if (disk->fops->unlocked_ioctl)
-                return disk->fops->unlocked_ioctl(&fake_file, cmd, arg);
+        if (disk->fops->__unlocked_ioctl)
+                return disk->fops->__unlocked_ioctl(&fake_file, cmd, arg);
+
+        if (disk->fops->__ioctl) {
+                lock_kernel();
+                ret = disk->fops->__ioctl(bdev->bd_inode, &fake_file, cmd, arg);
+                unlock_kernel();
+                return ret;
+        }
+
+        if (disk->fops->ioctl)
+                return disk->fops->ioctl(bdev, mode, cmd, arg);
 
-        if (disk->fops->ioctl) {
+        if (disk->fops->locked_ioctl) {
                 lock_kernel();
-                ret = disk->fops->ioctl(bdev->bd_inode, &fake_file, cmd, arg);
+                ret = disk->fops->locked_ioctl(bdev, mode, cmd, arg);
                 unlock_kernel();
                 return ret;
         }