[PATCH] ext4/ioctl.c: copy_{from,to}_user expect __user pointers

H Hartley Sweeten
2011-09-23T22:26:37Z

This quiets the sparse noise:

warning: incorrect type in argument 2 (different address spaces)
expected void const [noderef] <asn:1>*from
got struct fstrim_range *<noident>
warning: incorrect type in argument 1 (different address spaces)
expected void [noderef] <asn:1>*to
got struct fstrim_range *<noident>

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>

---

diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index f18bfe3..43759b1 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -348,7 +348,7 @@ mext_out:
if (!blk_queue_discard(q))
return -EOPNOTSUPP;

- if (copy_from_user(&range, (struct fstrim_range *)arg,
+ if (copy_from_user(&range, (struct fstrim_range __user *)arg,
sizeof(range)))
return -EFAULT;

@@ -358,7 +358,7 @@ mext_out:
if (ret < 0)
return ret;

- if (copy_to_user((struct fstrim_range *)arg, &range,
+ if (copy_to_user((struct fstrim_range __user *)arg, &range,
sizeof(range)))
return -EFAULT;