The class index and fullness group are not encoded in
(first)page->mapping any more, after commit 3783689a1aa8 ("zsmalloc:
introduce zspage structure"). Instead, they are store in struct zspage.
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Cc: Nitin Gupta <ngupta@xxxxxxxxxx>
Cc: Hanjun Guo <guohanjun@xxxxxxxxxx>
Signed-off-by: Yisheng Xie <xieyisheng1@xxxxxxxxxx>
---
mm/zsmalloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 9cc3c0b..4b87225 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -270,7 +270,7 @@ struct zs_pool {
/*
* A zspage's class index and fullness group
- * are encoded in its (first)page->mapping
+ * are stored in struct zspage.
*/
#define FULLNESS_BITS 2
#define CLASS_BITS 8
--
1.7.12.4
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