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 4CF05C433EF for ; Wed, 15 Dec 2021 11:19:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242006AbhLOLTC (ORCPT ); Wed, 15 Dec 2021 06:19:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237026AbhLOLS6 (ORCPT ); Wed, 15 Dec 2021 06:18:58 -0500 Received: from mail-lj1-x22c.google.com (mail-lj1-x22c.google.com [IPv6:2a00:1450:4864:20::22c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4F4D4C06173E; Wed, 15 Dec 2021 03:18:58 -0800 (PST) Received: by mail-lj1-x22c.google.com with SMTP id m12so32790649ljj.6; Wed, 15 Dec 2021 03:18:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Do+igy+24OpCO8ayQtrvopM+UKDBXHu8XcWDcF2aT8A=; b=gtea3RiShrHzm8K2NJN9kLT0Tk3BzL4XLXaiyJ8GsRdnG96DSfC/fD+bR6ixZFSUkN feEZjnAR22tXPQSjRK/vYhizXd0p/GbIn3n8ixnaBw2fdatq5yqIxnRwcj8PPKWUHRro afFIL1zBsSx1PJSL5Lt3+TSfkLfnDPZt/JuWeUuUFSLOsok499cR2e5yYD77hhcXihmF /qBJGE/xBl2C8rn9OndUgSaUW50zg+Zhv7kr/aJv8TsMkFCemKxSMcNR42jOilLuhPTt 0G73W/rS3Jux/oxGd2GBxC9uzlPYIelwV/N6I7jzy+hFq+0FDG8AOeHhvvDALngFDuKF Y25g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Do+igy+24OpCO8ayQtrvopM+UKDBXHu8XcWDcF2aT8A=; b=Cc+HaaPcxm3m3JHM+lW2cGRCEAaQHEUxEGOIJIUmmhU6pEG/q1TDgMvJOIM8N6aP3O makWdaBawkdDNJn3PyhmpTI7QqBds1vQPoBbOKT09C2KGMqyH54S0tCcXqbafz6G2ku1 BiPBjaO9AGS2Xf5TEhLVPZ7bfVJInbqjmCaKdRndYiBfUJHkuyCZSXa9IHFeoXogkwzl YUvhiM4a2MYEh3TozyrkheGZuRUcDb2DX7YLBa61F7ikuPIDXx7x7/DuoslItpANit4D 5WrXAZz04Uod6b4oGDKlLIH09s/IySurqwVYeNNImBE/s5/F3V/DWTTAXJRayNvOhlze ynHA== X-Gm-Message-State: AOAM530keDXnp5/gIVsdonFOwu1lZsm9/W5jzTEANcF/43LFBa9y0qrb 5iiJ/eaoboOu0aY+Fxek4Yia8X3E5tpIlgux X-Google-Smtp-Source: ABdhPJwFOszL8X0098U2pAArbk7tuSgkGkfS74rjH//U2QP8U89diYehibh4lSdLUziYcOh7tlp7Fg== X-Received: by 2002:a2e:2a46:: with SMTP id q67mr9683196ljq.398.1639567136643; Wed, 15 Dec 2021 03:18:56 -0800 (PST) Received: from pc638.lan (h5ef52e3d.seluork.dyn.perspektivbredband.net. [94.245.46.61]) by smtp.gmail.com with ESMTPSA id n17sm383906ljg.128.2021.12.15.03.18.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Dec 2021 03:18:56 -0800 (PST) From: "Uladzislau Rezki (Sony)" To: LKML , RCU , "Paul E . McKenney" Cc: Michal Hocko , Andrew Morton , Daniel Axtens , Frederic Weisbecker , Neeraj Upadhyay , Joel Fernandes , Peter Zijlstra , Thomas Gleixner , "Theodore Y . Ts'o" , Sebastian Andrzej Siewior , Uladzislau Rezki , Oleksiy Avramchenko , Uladzislau Rezki Subject: [PATCH RESEND] ext4: Switch to kvfree_rcu() API Date: Wed, 15 Dec 2021 12:18:39 +0100 Message-Id: <20211215111845.2514-3-urezki@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211215111845.2514-1-urezki@gmail.com> References: <20211215111845.2514-1-urezki@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Uladzislau Rezki Instead of invoking a synchronize_rcu() to free a pointer after a grace period we can directly make use of new API that does the same but in more efficient way. TO: "Theodore Ts'o" TO: linux-ext4@vger.kernel.org Signed-off-by: Uladzislau Rezki --- fs/ext4/super.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 4e33b5eca694..111b0498a232 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1886,8 +1886,7 @@ static int clear_qf_name(struct super_block *sb, int qtype) return -1; } rcu_assign_pointer(sbi->s_qf_names[qtype], NULL); - synchronize_rcu(); - kfree(old_qname); + kvfree_rcu(old_qname); return 1; } #endif -- 2.30.2