From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 05C96261B70; Tue, 17 Feb 2026 20:54:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771361674; cv=none; b=HQQJztT2roLKAXAloCP+bHfH6iUrsESzP3kQ7Q2dOYp9Y++bqho2rAi/J60LzulLQMrp5bsEi+Qs1tnvTys7HedukuOMAcrLjcL9crDz69CpYWlo9RVlIczU3RSvGRyZ1U0mcdNgwbFjq02ESbrQwNvYkiMwjDIfBs+eo9Bx4U8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771361674; c=relaxed/simple; bh=LJN3HPXtqsyBv36x7dYBbUOw1K8FMecHv2BpoCvfwaI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NEh5+1aurDUS+dZwMbutv5+N2c+gBxZrL90MLfhhwBN7lb+sSygeQFvGou5/IeGvis4IvrXm2OKFd9GuNy6L1OY0bGLXGHJsfAllUcElIcxBT0nO5ohY7nUWYOmXVpKgAoDn67k4fIsRVidi9ERGEv/ObsJXC35EMdNjHGtTsKU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=hjgcTo4B; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="hjgcTo4B" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7E896C4CEF7; Tue, 17 Feb 2026 20:54:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1771361673; bh=LJN3HPXtqsyBv36x7dYBbUOw1K8FMecHv2BpoCvfwaI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hjgcTo4BtirHzlwiREkg7zum7Z1fDog+IWIugad+7p50dZdwjZanehATFEKNbSlzy MLNKE3f2f96OT+1324HhzTz+zD/BM8cfYcR+Xv7aCL3M1EiJnMKThNiZX4cm0ds/W6 Ue+HXrXsYGdtRPG5IxEPelzbKVQXtxFICG5u4HpU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable@kernel.org, Sheng Yong , Jinbao Liu , Yongpeng Yang , Chao Yu , Jaegeuk Kim , Sasha Levin Subject: [PATCH 6.12 41/42] f2fs: fix IS_CHECKPOINTED flag inconsistency issue caused by concurrent atomic commit and checkpoint writes Date: Tue, 17 Feb 2026 21:32:32 +0100 Message-ID: <20260217200007.571209351@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260217200005.998240758@linuxfoundation.org> References: <20260217200005.998240758@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yongpeng Yang [ Upstream commit 7633a7387eb4d0259d6bea945e1d3469cd135bbc ] During SPO tests, when mounting F2FS, an -EINVAL error was returned from f2fs_recover_inode_page. The issue occurred under the following scenario Thread A Thread B f2fs_ioc_commit_atomic_write - f2fs_do_sync_file // atomic = true - f2fs_fsync_node_pages : last_folio = inode folio : schedule before folio_lock(last_folio) f2fs_write_checkpoint - block_operations// writeback last_folio - schedule before f2fs_flush_nat_entries : set_fsync_mark(last_folio, 1) : set_dentry_mark(last_folio, 1) : folio_mark_dirty(last_folio) - __write_node_folio(last_folio) : f2fs_down_read(&sbi->node_write)//block - f2fs_flush_nat_entries : {struct nat_entry}->flag |= BIT(IS_CHECKPOINTED) - unblock_operations : f2fs_up_write(&sbi->node_write) f2fs_write_checkpoint//return : f2fs_do_write_node_page() f2fs_ioc_commit_atomic_write//return SPO Thread A calls f2fs_need_dentry_mark(sbi, ino), and the last_folio has already been written once. However, the {struct nat_entry}->flag did not have the IS_CHECKPOINTED set, causing set_dentry_mark(last_folio, 1) and write last_folio again after Thread B finishes f2fs_write_checkpoint. After SPO and reboot, it was detected that {struct node_info}->blk_addr was not NULL_ADDR because Thread B successfully write the checkpoint. This issue only occurs in atomic write scenarios. For regular file fsync operations, the folio must be dirty. If block_operations->f2fs_sync_node_pages successfully submit the folio write, this path will not be executed. Otherwise, the f2fs_write_checkpoint will need to wait for the folio write submission to complete, as sbi->nr_pages[F2FS_DIRTY_NODES] > 0. Therefore, the situation where f2fs_need_dentry_mark checks that the {struct nat_entry}->flag /wo the IS_CHECKPOINTED flag, but the folio write has already been submitted, will not occur. Therefore, for atomic file fsync, sbi->node_write should be acquired through __write_node_folio to ensure that the IS_CHECKPOINTED flag correctly indicates that the checkpoint write has been completed. Fixes: 608514deba38 ("f2fs: set fsync mark only for the last dnode") Cc: stable@kernel.org Signed-off-by: Sheng Yong Signed-off-by: Jinbao Liu Signed-off-by: Yongpeng Yang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim [ folio => page ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- fs/f2fs/node.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1713,8 +1713,13 @@ static int __write_node_page(struct page goto redirty_out; } - if (atomic && !test_opt(sbi, NOBARRIER)) - fio.op_flags |= REQ_PREFLUSH | REQ_FUA; + if (atomic) { + if (!test_opt(sbi, NOBARRIER)) + fio.op_flags |= REQ_PREFLUSH | REQ_FUA; + if (IS_INODE(page)) + set_dentry_mark(page, + f2fs_need_dentry_mark(sbi, ino_of_node(page))); + } /* should add to global list before clearing PAGECACHE status */ if (f2fs_in_warm_node_list(sbi, page)) { @@ -1869,8 +1874,9 @@ continue_unlock: if (is_inode_flag_set(inode, FI_DIRTY_INODE)) f2fs_update_inode(inode, page); - set_dentry_mark(page, - f2fs_need_dentry_mark(sbi, ino)); + if (!atomic) + set_dentry_mark(page, + f2fs_need_dentry_mark(sbi, ino)); } /* may be written by other thread */ if (!PageDirty(page))