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 B6CC9ECAAD3 for ; Fri, 9 Sep 2022 20:33:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232292AbiIIUdK (ORCPT ); Fri, 9 Sep 2022 16:33:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35006 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232330AbiIIUcm (ORCPT ); Fri, 9 Sep 2022 16:32:42 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22F3A459BE for ; Fri, 9 Sep 2022 13:32:31 -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 741CA61FF5 for ; Fri, 9 Sep 2022 20:32:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C72B9C433C1; Fri, 9 Sep 2022 20:32:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1662755549; bh=g26YgQyoWp8NDpT6YGR208nrZkSAy+DgVllFGYzvRBI=; h=Date:To:From:Subject:From; b=QU4pv6lFoXKpGON50jyVhjJP5312wsJtOlq4ku8JcNokf4gtkJ8aIs9HOqhb5JO/w elr3/EPCaT7iBo+fMYapV4HPugRPrVPjvd1bH8UGeQluLlEYvVEhUkfceDMwHGbfWT xnkfhftU11h84sdEDvzErJQfKK2G9EcWNf7/Qia8= Date: Fri, 09 Sep 2022 13:32:29 -0700 To: mm-commits@vger.kernel.org, wangkefeng.wang@huawei.com, vitaly.wool@konsulko.com, sjenning@redhat.com, nathan@kernel.org, konrad.wilk@oracle.com, hch@lst.de, ddstreet@ieee.org, liushixin2@huawei.com, akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] revert-mm-mark-swap_lock-and-swap_active_head-static.patch removed from -mm tree Message-Id: <20220909203229.C72B9C433C1@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: Revert "mm: mark swap_lock and swap_active_head static" has been removed from the -mm tree. Its filename was revert-mm-mark-swap_lock-and-swap_active_head-static.patch This patch was dropped because an updated version will be merged ------------------------------------------------------ From: Liu Shixin Subject: Revert "mm: mark swap_lock and swap_active_head static" Date: Mon, 29 Aug 2022 21:22:58 +0800 Patch series "Delay the initializaton of zswap", v4. In the initialization of zswap, about 18MB memory will be allocated for zswap_pool. Since not all users use zswap, the memory may be wasted. Save the memory for these users by delaying the initialization of zswap to first enablement. This patch (of 5): This reverts commit 633423a09cb5cfe61438283e1ce49c23cf4a0611. swap_lock and swap_active_head will be used in the next patch, so export them again. Link: https://lkml.kernel.org/r/20220829132302.3367054-3-liushixin2@huawei.com Signed-off-by: Liu Shixin Cc: Christoph Hellwig Cc: Dan Streetman Cc: Kefeng Wang Cc: Konrad Rzeszutek Wilk Cc: Nathan Chancellor Cc: Seth Jennings Cc: Vitaly Wool Signed-off-by: Andrew Morton --- include/linux/swapfile.h | 2 ++ mm/swapfile.c | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) --- a/include/linux/swapfile.h~revert-mm-mark-swap_lock-and-swap_active_head-static +++ a/include/linux/swapfile.h @@ -6,6 +6,8 @@ * these were static in swapfile.c but frontswap.c needs them and we don't * want to expose them to the dozens of source files that include swap.h */ +extern spinlock_t swap_lock; +extern struct plist_head swap_active_head; extern struct swap_info_struct *swap_info[]; extern unsigned long generic_max_swapfile_size(void); unsigned long arch_max_swapfile_size(void); --- a/mm/swapfile.c~revert-mm-mark-swap_lock-and-swap_active_head-static +++ a/mm/swapfile.c @@ -51,7 +51,7 @@ static bool swap_count_continued(struct unsigned char); static void free_swap_count_continuations(struct swap_info_struct *); -static DEFINE_SPINLOCK(swap_lock); +DEFINE_SPINLOCK(swap_lock); static unsigned int nr_swapfiles; atomic_long_t nr_swap_pages; /* @@ -77,7 +77,7 @@ static const char Unused_offset[] = "Unu * all active swap_info_structs * protected with swap_lock, and ordered by priority. */ -static PLIST_HEAD(swap_active_head); +PLIST_HEAD(swap_active_head); /* * all available (active, not full) swap_info_structs _ Patches currently in -mm which might be from liushixin2@huawei.com are revert-frontswap-simplify-frontswap_register_ops.patch mm-zswap-replace-zswap_init_started-failed-with-zswap_init_state.patch mm-zswap-delay-the-initializaton-of-zswap-until-the-first-enablement.patch mm-zswap-skip-confusing-print-info.patch mm-thp-simplify-has_transparent_hugepage-by-using-is_builtin.patch mm-thp-remove-redundant-config_transparent_hugepage.patch mm-kmemleak-make-create_object-return-void.patch mm-huge_memory-prevent-thp_zero_page_alloc-increased-twice.patch mm-memcontrol-use-kstrtobool-for-swapaccount-param-parsing.patch