mm/zsmalloc: fix comment in zsmalloc

The class index and fullness group are not encoded in (first)page->mapping any more, after commit 3783689 ("zsmalloc: introduce zspage structure"). Instead, they are store in struct zspage. Just delete this unneeded comment. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Yisheng Xie <[email protected]> Suggested-by: Sergey Senozhatsky <[email protected]> Reviewed-by: Sergey Senozhatsky <[email protected]> Acked-by: Minchan Kim <[email protected]> Cc: Nitin Gupta <[email protected]> Cc: Hanjun Guo <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
wafgo · Feb 25, 2017 · b538e42 · b538e42
1 parent ad69444
commit b538e42
Showing 1 changed file with 0 additions and 4 deletions.
diff --git 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