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-rw-r--r--mm/zsmalloc.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 27b9661..615b9b9 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -643,13 +643,22 @@ static void insert_zspage(struct page *page, struct size_class *class,
if (fullness >= _ZS_NR_FULLNESS_GROUPS)
return;
- head = &class->fullness_list[fullness];
- if (*head)
- list_add_tail(&page->lru, &(*head)->lru);
-
- *head = page;
zs_stat_inc(class, fullness == ZS_ALMOST_EMPTY ?
CLASS_ALMOST_EMPTY : CLASS_ALMOST_FULL, 1);
+
+ head = &class->fullness_list[fullness];
+ if (!*head) {
+ *head = page;
+ return;
+ }
+
+ /*
+ * We want to see more ZS_FULL pages and less almost
+ * empty/full. Put pages with higher ->inuse first.
+ */
+ list_add_tail(&page->lru, &(*head)->lru);
+ if (page->inuse >= (*head)->inuse)
+ *head = page;
}
/*
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