ksm: use the helper method to do the hlist_empty check

This just uses the helper function to cleanup the assumption on the hlist_node internals. Signed-off-by: Andrea Arcangeli <[email protected]> Acked-by: Hugh Dickins <[email protected]> Cc: Petr Holasek <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
kyagi · Nov 6, 2015 · 98666f8 · 98666f8
1 parent f2e5ff8
commit 98666f8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mm/ksm.c b/mm/ksm.c
@@ -625,7 +625,7 @@ static void remove_rmap_item_from_tree(struct rmap_item *rmap_item)
 		unlock_page(page);
 		put_page(page);
 
-		if (stable_node->hlist.first)
+		if (!hlist_empty(&stable_node->hlist))
 			ksm_pages_sharing--;
 		else
 			ksm_pages_shared--;