From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B2A5ECAAA1 for ; Thu, 27 Oct 2022 20:04:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236862AbiJ0UES (ORCPT ); Thu, 27 Oct 2022 16:04:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45752 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237015AbiJ0UEG (ORCPT ); Thu, 27 Oct 2022 16:04:06 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFCAF8769F for ; Thu, 27 Oct 2022 13:04:04 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id A3366B82638 for ; Thu, 27 Oct 2022 20:04:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4016EC433C1; Thu, 27 Oct 2022 20:04:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1666901042; bh=sReLN21pLcN6LVh3UmyUhcPnWyAJiPeQyXVjwYxGBP4=; h=Date:To:From:Subject:From; b=vDlg74w6DTHYCdcnA6aYH1Aj7mfROmrsU2B8m+mbTIKGOoEP7STpGIb1GOHuuYEYS K/qR3rhEfvsCbD1RSOBMqmvGdIBand0509Gyd7Pq4O+aQTxtI7KpIQ1h2lYTGyc8E+ 4V9lGMfHlDtPH7h3THrLEWGgIzTUtANsMkDto3vo= Date: Thu, 27 Oct 2022 13:04:01 -0700 To: mm-commits@vger.kernel.org, ngupta@vflare.org, minchan@kernel.org, avromanov@sberdevices.ru, senozhatsky@chromium.org, akpm@linux-foundation.org From: Andrew Morton Subject: + zsmalloc-break-out-of-loop-when-found-perfect-zspage-order.patch added to mm-unstable branch Message-Id: <20221027200402.4016EC433C1@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: zsmalloc: break out of loop when found perfect zspage order has been added to the -mm mm-unstable branch. Its filename is zsmalloc-break-out-of-loop-when-found-perfect-zspage-order.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zsmalloc-break-out-of-loop-when-found-perfect-zspage-order.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Sergey Senozhatsky Subject: zsmalloc: break out of loop when found perfect zspage order Date: Thu, 27 Oct 2022 13:26:51 +0900 If we found zspage configuration that gives us perfect 100% used percentage (zero wasted space) then there is no point it trying any other configuration Link: https://lkml.kernel.org/r/20221027042651.234524-10-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Cc: Alexey Romanov Cc: Minchan Kim Cc: Nitin Gupta Signed-off-by: Andrew Morton --- --- a/mm/zsmalloc.c~zsmalloc-break-out-of-loop-when-found-perfect-zspage-order +++ a/mm/zsmalloc.c @@ -787,6 +787,9 @@ static int get_pages_per_zspage(u32 clas max_usedpc = usedpc; max_usedpc_order = i; } + + if (usedpc == 100) + break; } return max_usedpc_order; _ Patches currently in -mm which might be from senozhatsky@chromium.org are zram-preparation-for-multi-zcomp-support.patch zram-add-recompression-algorithm-sysfs-knob.patch zram-factor-out-wb-and-non-wb-zram-read-functions.patch zram-introduce-recompress-sysfs-knob.patch documentation-add-recompression-documentation.patch zram-add-recompression-algorithm-choice-to-kconfig.patch zram-add-recompress-flag-to-read_block_state.patch zram-clarify-writeback_store-comment.patch zram-use-is_err_value-to-check-for-zs_malloc-errors.patch zsmalloc-turn-zspage-order-into-runtime-variable.patch zsmalloc-move-away-from-page-order-defines.patch zsmalloc-make-huge-class-watermark-zs_pool-member.patch zram-huge-size-watermark-cannot-be-global.patch zsmalloc-pass-limit-on-pages-per-zspage-to-zs_create_pool.patch zram-add-pages_per_pool_page-device-attribute.patch documentation-document-zram-pages_per_pool_page-attribute.patch zsmalloc-break-out-of-loop-when-found-perfect-zspage-order.patch