From: Yisheng Xie <xieyisheng1@huawei.com>
Date: Fri, 24 Feb 2017 22:59:48 +0000 (-0800)
Subject: mm/zsmalloc: fix comment in zsmalloc
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=b538e422e41fd5ec8c059bde03d5504bb62bf0d1;p=openwrt%2Fstaging%2Fblogic.git

mm/zsmalloc: fix comment in zsmalloc

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.

Just delete this unneeded comment.

Link: http://lkml.kernel.org/r/1486620822-36826-1-git-send-email-xieyisheng1@huawei.com
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Suggested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 25d0fb6443d1..b7b1fb6c8c21 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -267,10 +267,6 @@ struct zs_pool {
 #endif
 };
 
-/*
- * A zspage's class index and fullness group
- * are encoded in its (first)page->mapping
- */
 #define FULLNESS_BITS	2
 #define CLASS_BITS	8
 #define ISOLATED_BITS	3