From patchwork Thu Jul 27 08:04:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13329722 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 B5127C00528 for ; Thu, 27 Jul 2023 08:31:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234262AbjG0IbC (ORCPT ); Thu, 27 Jul 2023 04:31:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38168 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235030AbjG0I32 (ORCPT ); Thu, 27 Jul 2023 04:29:28 -0400 Received: from mail-pf1-x429.google.com (mail-pf1-x429.google.com [IPv6:2607:f8b0:4864:20::429]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 80FC79ECF for ; Thu, 27 Jul 2023 01:15:53 -0700 (PDT) Received: by mail-pf1-x429.google.com with SMTP id d2e1a72fcca58-686f6231bdeso114013b3a.1 for ; Thu, 27 Jul 2023 01:15:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1690445674; x=1691050474; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=G6s8y0Dka4KE4srOwy3I0FSAaIGrcYmvE6JrVZfCpDs=; b=MBKqtR+m6tRDLwGbmGnhkuL4q0cqlWsjDeU7ZVRwaOZMOF0riGkcJrkyInKFI0pYis mWaNeHtwDzmym2/d2f7OIfkckgap6Prz7ne5Q+65Q9kFa2z8w6TXtQPQCrjIFsYVVR2m PRIs97KnddHeo2KzvpuxuJU//NWKLj0FPiuARmlExd2GlY1ot6WyHoUBUu1qPjJUPpT3 ZsG43k1Oz59Ii0r86zAALutb1Gd6A6cdhWxvrkZ21MO6UtDcxtLUaksPoYyR3li5MX3H RGe7M6IrmRvaAAMZm9ToAYQ8mPB0OkHGFsJVWBGXFBUa+qGlQpcM3sB1mv4YN0cfvLiI gBbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690445674; x=1691050474; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=G6s8y0Dka4KE4srOwy3I0FSAaIGrcYmvE6JrVZfCpDs=; b=NxHC/BmcVKLR9bEpRxi5zp3YAKihn6t2mgfvA69YUj/2A0xVz50hIQBL++St4NzblF 2rHJbgDhQt8yadA/mhvBKgmWsF5VuYu9ue4iKPiX20coiqJPHaIR2/e+LdmCPexVmmOL bIZKqKkCjmKRFgi2hg7UqJ2lNPkZ2emTpVhpoRfwr/5fIv+g5enHp6kPmOu7A0u1fv5x tUykAikyqSp2BRML6oBIPR715ARM3Yu5AqwZMfLrepxbSie6hKwFFQuaGU69T5XWnV17 VwmEmxRdrqF6FkA40xB1nIHa1cZMK4WFTSf/HzqBL5aENNNCWo07ScnLTWU3D4bO7JPw cwwQ== X-Gm-Message-State: ABy/qLY8bG3GNOam1uXSAa+N8HGSP6YjKcrP5O9IuKDjHHjirS18M3DS X/hRqCdhAynnf1rMaEsXMfWabQ== X-Google-Smtp-Source: APBJJlHZc+tyEor0irWiukNNv0+VJsTfo/jEPBj29UYMUTILxfRG5SoeWB7BzCnWVmRXaEQSTc0xVA== X-Received: by 2002:a05:6a00:4a0e:b0:677:3439:874a with SMTP id do14-20020a056a004a0e00b006773439874amr5210105pfb.3.1690445673911; Thu, 27 Jul 2023 01:14:33 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.147]) by smtp.gmail.com with ESMTPSA id j8-20020aa78d08000000b006828e49c04csm885872pfe.75.2023.07.27.01.14.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jul 2023 01:14:33 -0700 (PDT) From: Qi Zheng To: akpm@linux-foundation.org, david@fromorbit.com, tkhai@ya.ru, vbabka@suse.cz, roman.gushchin@linux.dev, djwong@kernel.org, brauner@kernel.org, paulmck@kernel.org, tytso@mit.edu, steven.price@arm.com, cel@kernel.org, senozhatsky@chromium.org, yujie.liu@intel.com, gregkh@linuxfoundation.org, muchun.song@linux.dev Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org, linux-erofs@lists.ozlabs.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, linux-mtd@lists.infradead.org, rcu@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, dm-devel@redhat.com, linux-raid@vger.kernel.org, linux-bcache@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-btrfs@vger.kernel.org, Qi Zheng , Muchun Song Subject: [PATCH v3 43/49] mm: shrinker: remove old APIs Date: Thu, 27 Jul 2023 16:04:56 +0800 Message-Id: <20230727080502.77895-44-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230727080502.77895-1-zhengqi.arch@bytedance.com> References: <20230727080502.77895-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org Now no users are using the old APIs, just remove them. Signed-off-by: Qi Zheng Reviewed-by: Muchun Song --- include/linux/shrinker.h | 7 -- mm/shrinker.c | 143 --------------------------------------- 2 files changed, 150 deletions(-) diff --git a/include/linux/shrinker.h b/include/linux/shrinker.h index cc23ff0aee20..c55c07c3f0cb 100644 --- a/include/linux/shrinker.h +++ b/include/linux/shrinker.h @@ -103,13 +103,6 @@ struct shrinker *shrinker_alloc(unsigned int flags, const char *fmt, ...); void shrinker_register(struct shrinker *shrinker); void shrinker_free(struct shrinker *shrinker); -extern int __printf(2, 3) prealloc_shrinker(struct shrinker *shrinker, - const char *fmt, ...); -extern void register_shrinker_prepared(struct shrinker *shrinker); -extern int __printf(2, 3) register_shrinker(struct shrinker *shrinker, - const char *fmt, ...); -extern void unregister_shrinker(struct shrinker *shrinker); -extern void free_prealloced_shrinker(struct shrinker *shrinker); extern void synchronize_shrinkers(void); #ifdef CONFIG_SHRINKER_DEBUG diff --git a/mm/shrinker.c b/mm/shrinker.c index 43a375f954f3..3ab301ff122d 100644 --- a/mm/shrinker.c +++ b/mm/shrinker.c @@ -651,149 +651,6 @@ void shrinker_free(struct shrinker *shrinker) } EXPORT_SYMBOL_GPL(shrinker_free); -/* - * Add a shrinker callback to be called from the vm. - */ -static int __prealloc_shrinker(struct shrinker *shrinker) -{ - unsigned int size; - int err; - - if (shrinker->flags & SHRINKER_MEMCG_AWARE) { - err = prealloc_memcg_shrinker(shrinker); - if (err != -ENOSYS) - return err; - - shrinker->flags &= ~SHRINKER_MEMCG_AWARE; - } - - size = sizeof(*shrinker->nr_deferred); - if (shrinker->flags & SHRINKER_NUMA_AWARE) - size *= nr_node_ids; - - shrinker->nr_deferred = kzalloc(size, GFP_KERNEL); - if (!shrinker->nr_deferred) - return -ENOMEM; - - return 0; -} - -#ifdef CONFIG_SHRINKER_DEBUG -int prealloc_shrinker(struct shrinker *shrinker, const char *fmt, ...) -{ - va_list ap; - int err; - - va_start(ap, fmt); - shrinker->name = kvasprintf_const(GFP_KERNEL, fmt, ap); - va_end(ap); - if (!shrinker->name) - return -ENOMEM; - - err = __prealloc_shrinker(shrinker); - if (err) { - kfree_const(shrinker->name); - shrinker->name = NULL; - } - - return err; -} -#else -int prealloc_shrinker(struct shrinker *shrinker, const char *fmt, ...) -{ - return __prealloc_shrinker(shrinker); -} -#endif - -void free_prealloced_shrinker(struct shrinker *shrinker) -{ -#ifdef CONFIG_SHRINKER_DEBUG - kfree_const(shrinker->name); - shrinker->name = NULL; -#endif - if (shrinker->flags & SHRINKER_MEMCG_AWARE) { - down_write(&shrinker_rwsem); - unregister_memcg_shrinker(shrinker); - up_write(&shrinker_rwsem); - return; - } - - kfree(shrinker->nr_deferred); - shrinker->nr_deferred = NULL; -} - -void register_shrinker_prepared(struct shrinker *shrinker) -{ - down_write(&shrinker_rwsem); - list_add_tail(&shrinker->list, &shrinker_list); - shrinker->flags |= SHRINKER_REGISTERED; - shrinker_debugfs_add(shrinker); - up_write(&shrinker_rwsem); -} - -static int __register_shrinker(struct shrinker *shrinker) -{ - int err = __prealloc_shrinker(shrinker); - - if (err) - return err; - register_shrinker_prepared(shrinker); - return 0; -} - -#ifdef CONFIG_SHRINKER_DEBUG -int register_shrinker(struct shrinker *shrinker, const char *fmt, ...) -{ - va_list ap; - int err; - - va_start(ap, fmt); - shrinker->name = kvasprintf_const(GFP_KERNEL, fmt, ap); - va_end(ap); - if (!shrinker->name) - return -ENOMEM; - - err = __register_shrinker(shrinker); - if (err) { - kfree_const(shrinker->name); - shrinker->name = NULL; - } - return err; -} -#else -int register_shrinker(struct shrinker *shrinker, const char *fmt, ...) -{ - return __register_shrinker(shrinker); -} -#endif -EXPORT_SYMBOL(register_shrinker); - -/* - * Remove one - */ -void unregister_shrinker(struct shrinker *shrinker) -{ - struct dentry *debugfs_entry; - int debugfs_id; - - if (!(shrinker->flags & SHRINKER_REGISTERED)) - return; - - down_write(&shrinker_rwsem); - list_del(&shrinker->list); - shrinker->flags &= ~SHRINKER_REGISTERED; - if (shrinker->flags & SHRINKER_MEMCG_AWARE) - unregister_memcg_shrinker(shrinker); - debugfs_entry = shrinker_debugfs_detach(shrinker, &debugfs_id); - up_write(&shrinker_rwsem); - - shrinker_debugfs_remove(debugfs_entry, debugfs_id); - - kfree(shrinker->nr_deferred); - shrinker->nr_deferred = NULL; -} -EXPORT_SYMBOL(unregister_shrinker); - /** * synchronize_shrinkers - Wait for all running shrinkers to complete. *