[patch] fcntl: return -EFAULT if copy_to_user fails

[Dan Carpenter]

copy_to_user() returns the number of bytes remaining, but we want to
return -EFAULT.

	ret = fcntl(fd, F_SETOWN_EX, NULL);

With the original code ret would be 8 here.

Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>

diff --git a/fs/fcntl.c b/fs/fcntl.c
index f74d270..0ea7b0f 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -274,7 +274,7 @@ static int f_setown_ex(struct file *filp, unsigned long arg)
 
 	ret = copy_from_user(&owner, owner_p, sizeof(owner));
 	if (ret)
-		return ret;
+		return -EFAULT;
 
 	switch (owner.type) {
 	case F_OWNER_TID:
--
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