The quilt patch titled
Subject: mm/zsmalloc: clarify class per-fullness zspage counts
has been removed from the -mm tree. Its filename was
mm-zsmalloc-fix-class-per-fullness-zspage-counts.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Chengming Zhou <chengming.zhou@xxxxxxxxx>
Subject: mm/zsmalloc: clarify class per-fullness zspage counts
Date: Thu, 27 Jun 2024 15:59:58 +0800
We always use insert_zspage() and remove_zspage() to update zspage's
fullness location, which will account correctly.
But this special async free path use "splice" instead of remove_zspage(),
so the per-fullness zspage count for ZS_INUSE_RATIO_0 won't decrease.
Clean things up by decreasing when iterate over the zspage free list.
This doesn't actually fix anything. ZS_INUSE_RATIO_0 is just a
"placeholder" which is never used anywhere.
Link: https://lkml.kernel.org/r/20240627075959.611783-1-chengming.zhou@xxxxxxxxx
Signed-off-by: Chengming Zhou <chengming.zhou@xxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/zsmalloc.c | 1 +
1 file changed, 1 insertion(+)
--- a/mm/zsmalloc.c~mm-zsmalloc-fix-class-per-fullness-zspage-counts
+++ a/mm/zsmalloc.c
@@ -1883,6 +1883,7 @@ static void async_free_zspage(struct wor
class = zspage_class(pool, zspage);
spin_lock(&class->lock);
+ class_stat_dec(class, ZS_INUSE_RATIO_0, 1);
__free_zspage(pool, class, zspage);
spin_unlock(&class->lock);
}
_
Patches currently in -mm which might be from chengming.zhou@xxxxxxxxx are
