Suggested-by: Minchan Kim <[email protected]>
Signed-off-by: Yinghao Xie <[email protected]>
---
mm/zsmalloc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 461243e..3e613cc 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -760,7 +760,8 @@ out:
* to form a zspage for each size class. This is important
* to reduce wastage due to unusable space left at end of
* each zspage which is given as:
- * wastage = Zp - Zp % size_class
+ * wastage = Zp % class_size
+ * usage = Zp - wastage
* where Zp = zspage size = k * PAGE_SIZE where k = 1, 2, ...
*
* For example, for size class of 3/8 * PAGE_SIZE, we should
--
1.7.9.5
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