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]>

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/ksm.c b/mm/ksm.c
index 9f182f99ff5e..d4ee1591520b 100644
--- 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--;