+ zsmalloc-set-default-zspage-chain-size-to-8.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: zsmalloc: set default zspage chain size to 8
has been added to the -mm mm-unstable branch.  Its filename is
     zsmalloc-set-default-zspage-chain-size-to-8.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zsmalloc-set-default-zspage-chain-size-to-8.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Sergey Senozhatsky <senozhatsky@chromium.org>
Subject: zsmalloc: set default zspage chain size to 8
Date: Wed, 18 Jan 2023 09:52:10 +0900

This changes key characteristics (pages per-zspage and objects per-zspage)
of a number of size classes which in results in different pool
configuration.  With zspage chain size of 8 we have more size clases
clusters (123) and higher huge size class watermark (3632 bytes).

Please read zsmalloc documentation for more details.

Link: https://lkml.kernel.org/r/20230118005210.2814763-5-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- a/mm/Kconfig~zsmalloc-set-default-zspage-chain-size-to-8
+++ a/mm/Kconfig
@@ -193,7 +193,7 @@ config ZSMALLOC_STAT
 
 config ZSMALLOC_CHAIN_SIZE
 	int "Maximum number of physical pages per-zspage"
-	default 4
+	default 8
 	range 4 16
 	depends on ZSMALLOC
 	help
_

Patches currently in -mm which might be from senozhatsky@chromium.org are

zram-correctly-handle-all-next_arg-cases.patch
zsmalloc-rework-zspage-chain-size-selection.patch
zsmalloc-skip-chain-size-calculation-for-pow_of_2-classes.patch
zsmalloc-make-zspage-chain-size-configurable.patch
zsmalloc-set-default-zspage-chain-size-to-8.patch