mm/mempolicy: remove redundant check in get_nodes

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. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Yisheng Xie <[email protected]> Acked-by: Vlastimil Babka <[email protected]> Acked-by: David Rientjes <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: David Rientjes <[email protected]> Cc: Naoya Horiguchi <[email protected]> Cc: Chris Salls <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Christopher Lameter <[email protected]> Cc: Tan Xiaojun <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
mrcsosa · Feb 1, 2018 · 66f308e · 66f308e
1 parent 2e3ca40
commit 66f308e
Showing 1 changed file with 0 additions and 2 deletions.
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
@@ -1282,8 +1282,6 @@ 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))