Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6

[pandora-kernel.git] / block / ioctl.c

diff --git a/block/ioctl.c b/block/ioctl.c
index e8eb679..d8052f0 100644 (file)
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -114,8 +114,10 @@ static int blkdev_reread_part(struct block_device *bdev)
 }
 
 static int blk_ioctl_discard(struct block_device *bdev, uint64_t start,
-                            uint64_t len)
+                            uint64_t len, int secure)
 {
+       unsigned long flags = BLKDEV_IFL_WAIT;
+
        if (start & 511)
                return -EINVAL;
        if (len & 511)
@@ -125,8 +127,9 @@ static int blk_ioctl_discard(struct block_device *bdev, uint64_t start,
 
        if (start + len > (bdev->bd_inode->i_size >> 9))
                return -EINVAL;
-       return blkdev_issue_discard(bdev, start, len, GFP_KERNEL,
-                                   BLKDEV_IFL_WAIT);
+       if (secure)
+               flags |= BLKDEV_IFL_SECURE;
+       return blkdev_issue_discard(bdev, start, len, GFP_KERNEL, flags);
 }
 
 static int put_ushort(unsigned long arg, unsigned short val)
@@ -163,18 +166,10 @@ int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,
                        unsigned cmd, unsigned long arg)
 {
        struct gendisk *disk = bdev->bd_disk;
-       int ret;
 
        if (disk->fops->ioctl)
                return disk->fops->ioctl(bdev, mode, cmd, arg);
 
-       if (disk->fops->locked_ioctl) {
-               lock_kernel();
-               ret = disk->fops->locked_ioctl(bdev, mode, cmd, arg);
-               unlock_kernel();
-               return ret;
-       }
-
        return -ENOTTY;
 }
 /*
@@ -185,8 +180,7 @@ int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,
 EXPORT_SYMBOL_GPL(__blkdev_driver_ioctl);
 
 /*
- * always keep this in sync with compat_blkdev_ioctl() and
- * compat_blkdev_locked_ioctl()
+ * always keep this in sync with compat_blkdev_ioctl()
  */
 int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
                        unsigned long arg)
@@ -206,10 +200,8 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
                if (ret != -EINVAL && ret != -ENOTTY)
                        return ret;
 
-               lock_kernel();
                fsync_bdev(bdev);
                invalidate_bdev(bdev);
-               unlock_kernel();
                return 0;
 
        case BLKROSET:
@@ -221,12 +213,11 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
                        return -EACCES;
                if (get_user(n, (int __user *)(arg)))
                        return -EFAULT;
-               lock_kernel();
                set_device_ro(bdev, n);
-               unlock_kernel();
                return 0;
 
-       case BLKDISCARD: {
+       case BLKDISCARD:
+       case BLKSECDISCARD: {
                uint64_t range[2];
 
                if (!(mode & FMODE_WRITE))
@@ -235,7 +226,8 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
                if (copy_from_user(range, (void __user *)arg, sizeof(range)))
                        return -EFAULT;
 
-               return blk_ioctl_discard(bdev, range[0], range[1]);
+               return blk_ioctl_discard(bdev, range[0], range[1],
+                                        cmd == BLKSECDISCARD);
        }
 
        case HDIO_GETGEO: {
@@ -309,14 +301,10 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
                        bd_release(bdev);
                return ret;
        case BLKPG:
-               lock_kernel();
                ret = blkpg_ioctl(bdev, (struct blkpg_ioctl_arg __user *) arg);
-               unlock_kernel();
                break;
        case BLKRRPART:
-               lock_kernel();
                ret = blkdev_reread_part(bdev);
-               unlock_kernel();
                break;
        case BLKGETSIZE:
                size = bdev->bd_inode->i_size;
@@ -329,9 +317,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
        case BLKTRACESTOP:
        case BLKTRACESETUP:
        case BLKTRACETEARDOWN:
-               lock_kernel();
                ret = blk_trace_ioctl(bdev, cmd, (char __user *) arg);
-               unlock_kernel();
                break;
        default:
                ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);