The patch titled
Subject: zsmalloc: reorganize struct size_class to pack 4 bytes hole
has been added to the -mm tree. Its filename is
zsmalloc-reorganize-struct-size_class-to-pack-4-bytes-hole.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/zsmalloc-reorganize-struct-size_class-to-pack-4-bytes-hole.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/zsmalloc-reorganize-struct-size_class-to-pack-4-bytes-hole.patch
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------------------------------------------------------
From: Weijie Yang <weijie.yang@xxxxxxxxxxx>
Subject: zsmalloc: reorganize struct size_class to pack 4 bytes hole
Reoder the pages_per_zspage field in struct size_class which can eliminate
the 4 bytes hole between it and stats field.
Signed-off-by: Weijie Yang <weijie.yang@xxxxxxxxxxx>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/zsmalloc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/zsmalloc.c~zsmalloc-reorganize-struct-size_class-to-pack-4-bytes-hole mm/zsmalloc.c
--- a/mm/zsmalloc.c~zsmalloc-reorganize-struct-size_class-to-pack-4-bytes-hole
+++ a/mm/zsmalloc.c
@@ -213,10 +213,10 @@ struct size_class {
int size;
unsigned int index;
- /* Number of PAGE_SIZE sized pages to combine to form a 'zspage' */
- int pages_per_zspage;
struct zs_size_stat stats;
+ /* Number of PAGE_SIZE sized pages to combine to form a 'zspage' */
+ int pages_per_zspage;
/* huge object: pages_per_zspage == 1 && maxobj_per_zspage == 1 */
bool huge;
};
_
Patches currently in -mm which might be from weijie.yang@xxxxxxxxxxx are
zsmalloc-reorganize-struct-size_class-to-pack-4-bytes-hole.patch
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