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 80F2A23535B; Mon, 10 Mar 2025 17:31:27 +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=1741627887; cv=none; b=O+mhyNKwyqnpyboSY5ea/8MLoHa/9expN4s6ApvY+3BRmSnVJhFsyGMlx1HvXhv7FoVhZUpKws1RzKs3qsSK8IIGGec822dGLg1au908eH7pux0gibfCEcPrminhDTforjXUyIpNbCA2AzmFjLZYqkiYb3bFpgOHHehQdyLvQdo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741627887; c=relaxed/simple; bh=/Z8UVRcukBjLcV7CDp+vMFN3Dfcj5hDCWqfDime4alw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ex9ECR3cE3tu50qKEi1l6x+NV0HJuwLqWKNmLkx64H4Kq+KhuuekAdsNfLKENQlFZ/va9gHXrtIROn2zE6dc7iflPsABlGZO8UJFMXEhI5IT2QuPB6Eu5SvXgQn5v6QckRKBTQmlGKiQLlcdSRtYbkvuxLOLIdRWzwAaHj+7ChM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=1ixFoMe4; 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="1ixFoMe4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2D7FC4CEED; Mon, 10 Mar 2025 17:31:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1741627887; bh=/Z8UVRcukBjLcV7CDp+vMFN3Dfcj5hDCWqfDime4alw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1ixFoMe4ubSQKgZ+sw6WgxBReiTUdAsnCc9Vfks/F4OZMCCt8CEtgucs9wQcGZajJ /fcSeH6IBX7eQV97y5Lwo/PQ76OiibSH6Npf/660//mIF0IkDYG8aUYkxD5aiRTWUu 94fo9rYpvy9hMeiyPi/h98Mpv+OPyiKjVrdopEXY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Chuck Lever , Trond Myklebust , Anna Schumaker , Sasha Levin Subject: [PATCH 6.6 015/145] NFS: O_DIRECT writes must check and adjust the file length Date: Mon, 10 Mar 2025 18:05:09 +0100 Message-ID: <20250310170435.361092917@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250310170434.733307314@linuxfoundation.org> References: <20250310170434.733307314@linuxfoundation.org> User-Agent: quilt/0.68 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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Trond Myklebust [ Upstream commit fcf857ee1958e9247298251f7615d0c76f1e9b38 ] While it is uncommon for delegations to be held while O_DIRECT writes are in progress, it is possible. The xfstests generic/647 and generic/729 both end up triggering that state, and end up failing due to the fact that the file size is not adjusted. Reported-by: Chuck Lever Link: https://bugzilla.kernel.org/show_bug.cgi?id=219738 Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker Signed-off-by: Sasha Levin --- fs/nfs/direct.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 258521d5125ed..a1ff4a4f5380e 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -130,6 +130,20 @@ static void nfs_direct_truncate_request(struct nfs_direct_req *dreq, dreq->count = req_start; } +static void nfs_direct_file_adjust_size_locked(struct inode *inode, + loff_t offset, size_t count) +{ + loff_t newsize = offset + (loff_t)count; + loff_t oldsize = i_size_read(inode); + + if (newsize > oldsize) { + i_size_write(inode, newsize); + NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_SIZE; + trace_nfs_size_grow(inode, newsize); + nfs_inc_stats(inode, NFSIOS_EXTENDWRITE); + } +} + /** * nfs_swap_rw - NFS address space operation for swap I/O * @iocb: target I/O control block @@ -728,6 +742,7 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr) struct nfs_direct_req *dreq = hdr->dreq; struct nfs_commit_info cinfo; struct nfs_page *req = nfs_list_entry(hdr->pages.next); + struct inode *inode = dreq->inode; int flags = NFS_ODIRECT_DONE; trace_nfs_direct_write_completion(dreq); @@ -749,6 +764,10 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr) } spin_unlock(&dreq->lock); + spin_lock(&inode->i_lock); + nfs_direct_file_adjust_size_locked(inode, dreq->io_start, dreq->count); + spin_unlock(&inode->i_lock); + while (!list_empty(&hdr->pages)) { req = nfs_list_entry(hdr->pages.next); -- 2.39.5