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 X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25709C4708F for ; Wed, 2 Jun 2021 15:19:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0CB3E613B1 for ; Wed, 2 Jun 2021 15:19:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232327AbhFBPVX (ORCPT ); Wed, 2 Jun 2021 11:21:23 -0400 Received: from smtp-out1.suse.de ([195.135.220.28]:33770 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232250AbhFBPUR (ORCPT ); Wed, 2 Jun 2021 11:20:17 -0400 Received: from imap.suse.de (imap-alt.suse-dmz.suse.de [192.168.254.47]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 108B5336E9; Wed, 2 Jun 2021 15:18:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1622647112; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc; bh=+mrc6++6WowrRrzI0TFBvSWZxYHBvzCg6qyOdVwJT+I=; b=P/l32B3moMloUZry2OLrDmFGSICn+UwgN/YI7h2bcMtBwIbDMDU29jQpy6X8qmEeygauvY 9AXKHt6yRQcmxVIviCWMMLkOazy2yTr9KbjGXhCRGiyJg2Pq2v2nxLOuhdjOzH9J3PvNX2 ta+7UyPCGLVVdJk0y+8/1GGfzd7vWCw= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1622647112; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc; bh=+mrc6++6WowrRrzI0TFBvSWZxYHBvzCg6qyOdVwJT+I=; b=qm8lA7JhSr+Rz3HQvm3OuD2ukMyxFgu9GaE+ypLPloiJTAVQs1mPFDJeLl7jpGXjKlzCH+ +92lpVDDB3ha/9Cw== Received: by imap.suse.de (Postfix, from userid 51) id 05A2F11CD7; Wed, 2 Jun 2021 15:28:32 +0000 (UTC) Received: from imap3-int (imap-alt.suse-dmz.suse.de [192.168.254.47]) by imap.suse.de (Postfix) with ESMTP id 3092411D1C; Wed, 2 Jun 2021 09:15:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1622625308; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc; bh=+mrc6++6WowrRrzI0TFBvSWZxYHBvzCg6qyOdVwJT+I=; b=BmPshbbJFOD35THzu+13J1d+3d7G3OQ5iq82DNDZVKQn65bH9khU4Pw/kM675AlL44Lh3U lf4/3ymCXHXyG7LpExx8Elq+gv1IJvk8f3//yhlFzf4MBjqyF3IJw48yUY1BOMF2ZDqwlw q7KsZiOjokj13qmjBM5Pk3yT50QcI6A= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1622625308; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc; bh=+mrc6++6WowrRrzI0TFBvSWZxYHBvzCg6qyOdVwJT+I=; b=XWYbN4hjXRzM4bk5v7D+cpn63OB4U1TvN1dKZ5FbKWZX8URQw/6jZevcRf04uJ4MQiEaQF 8WA4CPtKx34cB5BQ== Received: from director2.suse.de ([192.168.254.72]) by imap3-int with ESMTPSA id KrtyCBxMt2A6HgAALh3uQQ (envelope-from ); Wed, 02 Jun 2021 09:15:08 +0000 From: Oscar Salvador To: Andrew Morton Cc: David Hildenbrand , Dave Hansen , Michal Hocko , Anshuman Khandual , Vlastimil Babka , Pavel Tatashin , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Oscar Salvador Subject: [PATCH v2 0/3] Memory hotplug locking cleanup Date: Wed, 2 Jun 2021 11:14:54 +0200 Message-Id: <20210602091457.17772-1-osalvador@suse.de> X-Mailer: git-send-email 2.13.7 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, I decided to go one step further and completely rip out zone's span_seqlock and all related functions, since we should be ok by using {get,put}_online_mems() on the reader side given that memory-hotplug is the only user fiddling with those values. Patch#1 and patch#2 could probably be squashed but I decided to keep them separated so the intention becomes more clear. Patch#3 only removes declarations that seem never be used. Given that this is a much bigger surgery, I decided to drop any Acked-by/ Reviewed-by. Oscar Salvador (3): mm,page_alloc: Use {get,put}_online_mems() to get stable zone's values mm,memory_hotplug: Drop unneeded locking mm,memory_hotplug: Remove unneeded declarations include/linux/memory_hotplug.h | 38 -------------------------------------- include/linux/mmzone.h | 23 +++++------------------ mm/memory_hotplug.c | 16 +--------------- mm/page_alloc.c | 15 ++++++--------- 4 files changed, 12 insertions(+), 80 deletions(-) -- 2.16.3