[PATCH RFC v2 2/4] mm/mempolicy: remove redundant check in get_nodes

[Yisheng Xie]

We have already checked whether maxnode is a page worth of bits, by:
    maxnode > PAGE_SIZE*BITS_PER_BYTE

So no need to check it once more.

Signed-off-by: Yisheng Xie <xieyishe...@huawei.com>
---
 mm/mempolicy.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 613e9d0..3b51bb3 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1280,8 +1280,6 @@ static int get_nodes(nodemask_t *nodes, const unsigned 
long __user *nmask,
        /* When the user specified more nodes than supported just check
           if the non supported part is all zero. */
        if (nlongs > BITS_TO_LONGS(MAX_NUMNODES)) {
-               if (nlongs > PAGE_SIZE/sizeof(long))
-                       return -EINVAL;
                for (k = BITS_TO_LONGS(MAX_NUMNODES); k < nlongs; k++) {
                        unsigned long t;
                        if (get_user(t, nmask + k))
-- 
1.7.12.4