linux-ext4 - [PATCH] ext3/ioctl.c: quite sparse warnings about different address spaces

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Date:	Fri, 10 Jun 2011 14:59:05 -0700
From:	H Hartley Sweeten <hartleys@...ionengravers.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
CC:	<linux-ext4@...r.kernel.org>, <jack@...e.cz>,
	<akpm@...ux-foundation.org>, <adilger.kernel@...ger.ca>
Subject: [PATCH] ext3/ioctl.c: quite sparse warnings about different address spaces

The 'from' argument for copy_from_user and the 'to' argument for
copy_to_user should both be tagged as __user address space.

Signed-off-by: H Hartley Sweeten <hsweeten@...ionengravers.com>
Cc: Jan Kara <jack@...e.cz>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Andreas Dilger <adilger.kernel@...ger.ca>

---

diff --git a/fs/ext3/ioctl.c b/fs/ext3/ioctl.c
index f4090bd..c7f4394 100644
--- a/fs/ext3/ioctl.c
+++ b/fs/ext3/ioctl.c
@@ -285,7 +285,7 @@ group_add_out:
 		if (!capable(CAP_SYS_ADMIN))
 			return -EPERM;
 
-		if (copy_from_user(&range, (struct fstrim_range *)arg,
+		if (copy_from_user(&range, (struct fstrim_range __user *)arg,
 				   sizeof(range)))
 			return -EFAULT;
 
@@ -293,7 +293,7 @@ group_add_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;
 
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