From patchwork Mon May 17 14:00:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 440815 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 18017C433B4 for ; Mon, 17 May 2021 14:59:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F2FAD61019 for ; Mon, 17 May 2021 14:59:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241280AbhEQPAf (ORCPT ); Mon, 17 May 2021 11:00:35 -0400 Received: from mail.kernel.org ([198.145.29.99]:59928 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241729AbhEQO6e (ORCPT ); Mon, 17 May 2021 10:58:34 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 0C45E619B5; Mon, 17 May 2021 14:26:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621261565; bh=ytXTiaDKBX+Xnj5S+5IPA8W2ZFBxBSfHmKmSNUnLtAw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JOr3tYFvm3KI7p2IqZ17bUiyHCgaGlD+o3t32jqvMTsnP34mEFl4ZWCl7+m1LjBTQ 8TGkusHOOglvQKq37d/cOwqFlvcsEOy4XrHdmS4tpXiKkcSo+3XJNjq+oT/xfMiH1K 5tVD0p+ED+8bGG5myzy+2D43vrsoeqYvoIGT7u5o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chao Yu , Jaegeuk Kim , Sasha Levin Subject: [PATCH 5.11 129/329] f2fs: fix to cover __allocate_new_section() with curseg_lock Date: Mon, 17 May 2021 16:00:40 +0200 Message-Id: <20210517140306.475967255@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210517140302.043055203@linuxfoundation.org> References: <20210517140302.043055203@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Chao Yu [ Upstream commit 823d13e12b6cbaef2f6e5d63c648643e7bc094dd ] In order to avoid race with f2fs_do_replace_block(). Fixes: f5a53edcf01e ("f2fs: support aligned pinned file") Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin --- fs/f2fs/segment.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index ab0a2d2de9a9..73db79d958bd 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -2955,19 +2955,23 @@ static void __allocate_new_section(struct f2fs_sb_info *sbi, int type) void f2fs_allocate_new_section(struct f2fs_sb_info *sbi, int type) { + down_read(&SM_I(sbi)->curseg_lock); down_write(&SIT_I(sbi)->sentry_lock); __allocate_new_section(sbi, type); up_write(&SIT_I(sbi)->sentry_lock); + up_read(&SM_I(sbi)->curseg_lock); } void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi) { int i; + down_read(&SM_I(sbi)->curseg_lock); down_write(&SIT_I(sbi)->sentry_lock); for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) __allocate_new_segment(sbi, i, false); up_write(&SIT_I(sbi)->sentry_lock); + up_read(&SM_I(sbi)->curseg_lock); } static const struct segment_allocation default_salloc_ops = {