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 9F2A6C67871 for ; Mon, 24 Oct 2022 22:20:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230502AbiJXWUo (ORCPT ); Mon, 24 Oct 2022 18:20:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50434 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231168AbiJXWUR (ORCPT ); Mon, 24 Oct 2022 18:20:17 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B74419C20 for ; Mon, 24 Oct 2022 13:37:14 -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 dfw.source.kernel.org (Postfix) with ESMTPS id DEC0E61589 for ; Mon, 24 Oct 2022 20:35:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3C7CBC433D6; Mon, 24 Oct 2022 20:35:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1666643743; bh=0+ujYuZy9FUyLDFu0seuKAMiCcA26WEPIG+l+9VQgT4=; h=Date:To:From:Subject:From; b=xTS3hAnKwK8NbuBDAd790Q1f/2l6kVwac1VHxzQQ6z412bOuWlGaAg9ojwfzbTrYW JAB7ogZaV2+S86EU9vrAMAGdotawPqh8KxKElNnpxodh94DuUJUldTR0HoDIJKvRf3 5IyYy143cilZCYcV0RBl3fPyouboPoZiKBtE/wA8= Date: Mon, 24 Oct 2022 13:35:42 -0700 To: mm-commits@vger.kernel.org, ngupta@vflare.org, minchan@kernel.org, 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: <20221024203543.3C7CBC433D6@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: Tue, 25 Oct 2022 01:12:12 +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/20221024161213.3221725-6-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Cc: Minchan Kim Cc: Nitin Gupta Signed-off-by: Andrew Morton --- mm/zsmalloc.c | 3 +++ 1 file changed, 3 insertions(+) --- a/mm/zsmalloc.c~zsmalloc-break-out-of-loop-when-found-perfect-zspage-order +++ a/mm/zsmalloc.c @@ -790,6 +790,9 @@ static int get_pages_per_zspage(struct z 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-zram-pass-zspage-order-to-zs_create_pool.patch zram-add-pool_page_order-device-attribute.patch documentation-document-zram-pool_page_order-attribute.patch zsmalloc-break-out-of-loop-when-found-perfect-zspage-order.patch zsmalloc-make-sure-we-select-best-zspage-size.patch