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-rw-r--r--fs/nilfs2/ioctl.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index 85a291c..7fbd9fe 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -41,6 +41,7 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
void *, size_t, size_t))
{
void *buf;
+ void __user *base = (void __user *)(unsigned long)argv->v_base;
size_t maxmembs, total, n;
ssize_t nr;
int ret, i;
@@ -64,9 +65,8 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
n = (argv->v_nmembs - i < maxmembs) ?
argv->v_nmembs - i : maxmembs;
if ((dir & _IOC_WRITE) &&
- copy_from_user(buf,
- (void __user *)argv->v_base + argv->v_size * i,
- argv->v_size * n)) {
+ copy_from_user(buf, base + argv->v_size * i,
+ argv->v_size * n)) {
ret = -EFAULT;
break;
}
@@ -78,9 +78,8 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
break;
}
if ((dir & _IOC_READ) &&
- copy_to_user(
- (void __user *)argv->v_base + argv->v_size * i,
- buf, argv->v_size * nr)) {
+ copy_to_user(base + argv->v_size * i, buf,
+ argv->v_size * nr)) {
ret = -EFAULT;
break;
}
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