From nobody Fri Oct 17 10:11:58 2025 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 5204AC4332F for ; Wed, 19 Oct 2022 12:17:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232881AbiJSMRU (ORCPT ); Wed, 19 Oct 2022 08:17:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55464 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232859AbiJSMQ5 (ORCPT ); Wed, 19 Oct 2022 08:16:57 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A5BF192D94; Wed, 19 Oct 2022 04:52:42 -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 ams.source.kernel.org (Postfix) with ESMTPS id 867FDB822EE; Wed, 19 Oct 2022 08:43:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EB737C433D6; Wed, 19 Oct 2022 08:43:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1666169001; bh=ENqjI30oM3X1HTevosEQ8wfvgkE/7JDm0ZpMwQO+m1g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HOEu3WtBj0F6qrTwxAcQQnGb3MpUwoobjeM0TjPHuaGhPcLYbuV7DnSlPQkqPKFq5 3ArQMclZ7kvMBViBzr9KKuTXNrp0838mA5250FRgJr+NbEuNWfvPQ0C0VZlYmOSkd+ 8JpGyzHvoCSVDOsY0VrRnynM7c9sNXJlGeHfNhS8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Aran Dalton , Chao Yu , Jaegeuk Kim Subject: [PATCH 6.0 126/862] f2fs: increase the limit for reserve_root Date: Wed, 19 Oct 2022 10:23:33 +0200 Message-Id: <20221019083255.521198948@linuxfoundation.org> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20221019083249.951566199@linuxfoundation.org> References: <20221019083249.951566199@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Jaegeuk Kim commit da35fe96d12d15779f3cb74929b7ed03941cf983 upstream. This patch increases the threshold that limits the reserved root space from= 0.2% to 12.5% by using simple shift operation. Typically Android sets 128MB, but if the storage capacity is 32GB, 0.2% whi= ch is around 64MB becomes too small. Let's relax it. Cc: stable@vger.kernel.org Reported-by: Aran Dalton Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Greg Kroah-Hartman --- fs/f2fs/super.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -301,10 +301,10 @@ static void f2fs_destroy_casefold_cache( =20 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) { - block_t limit =3D min((sbi->user_block_count << 1) / 1000, + block_t limit =3D min((sbi->user_block_count >> 3), sbi->user_block_count - sbi->reserved_blocks); =20 - /* limit is 0.2% */ + /* limit is 12.5% */ if (test_opt(sbi, RESERVE_ROOT) && F2FS_OPTION(sbi).root_reserved_blocks > limit) { F2FS_OPTION(sbi).root_reserved_blocks =3D limit;