From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 93698384CEF; Fri, 22 May 2026 19:42:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779478981; cv=none; b=ZsqTEQU4K73d++/zBZnixNiALL9q5afhRH3bw8nrwfzrMjqxEOJfRpDpu+HSJ0iZwF/yuUOWnCzeHRRNzEI/HdfW6eyVk5hu1sePzS3VQi9KB+UVItn/PolZt2Max//Ln3NStWv1ohaFkaeix/oIDBGVahswHOLtbekWwlx3+zg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779478981; c=relaxed/simple; bh=/nJ1xNNDJ9rJbf9EQXkdUUjwKKr61STzhNKZjVXGJbQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ETLAseYGGRQyDQRo2zHSc4Xa79szk6/wI3pBT5aWlbbZqphrnIuzGL0qyfS1LMi6fzRmqE3iM9KIM2iYZ1azHiim/xLCD7l95Fo2w2or5TyTrsLg9Z67DYEe9DtoQAYQKzp0ZocBKcJOKqtVNB0R1ZKysNdR+Q2DILhmfFKKYD0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WLn2RcYQ; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="WLn2RcYQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 83FE61F00A3D; Fri, 22 May 2026 19:42:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779478977; bh=0psYgh/U78Yx/gV/O/+YpCNlLQ0kiZOK/pcEbcuUCHM=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=WLn2RcYQ6elAS0QO4hkYfS9zg4eucCdfmOBLOSLgA9+MZNjvEnkjrBrjaLje4wngH l9rAZnvvZxL+Knx1xwIOd6jvYzg5IsKANpZTP87+wjvowvdOLRCYJdJhDRASoX/J9t PaJz+cNRnZhCMQ6zEWAc+ehmqnVdCTy0FwBdqrCqdVqeLyQIeBV6/RpbHxdL8imxjQ c3lBMy1OszmXL50+boqAjMGH4ocKWGJCD/oCtBW0nStW1ADwWgCM1ArNOCj+/mT0fu 2ynx8dw6339L0T6FaNJRAsxxbbk/84Riwsmc/QTArspQ7vJvqggaIBkUxZkMz1owMV /jhJlhgUFMnpg== From: Jeff Layton Date: Fri, 22 May 2026 15:42:19 -0400 Subject: [PATCH v5 14/21] nfsd: allow nfsd4_encode_fattr4_change() to work with no export Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260522-dir-deleg-v5-14-542cddfad576@kernel.org> References: <20260522-dir-deleg-v5-0-542cddfad576@kernel.org> In-Reply-To: <20260522-dir-deleg-v5-0-542cddfad576@kernel.org> To: Chuck Lever , NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Trond Myklebust , Anna Schumaker , Jonathan Corbet , Shuah Khan Cc: Steven Rostedt , Alexander Aring , Amir Goldstein , Jan Kara , Alexander Viro , Christian Brauner , Calum Mackay , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-nfs@vger.kernel.org, Jeff Layton X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=846; i=jlayton@kernel.org; h=from:subject:message-id; bh=/nJ1xNNDJ9rJbf9EQXkdUUjwKKr61STzhNKZjVXGJbQ=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBqELGhVRmVV1RdAbO5AF90jTEqpqzLmS5q5Ef6d YFBjQYzw7uJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCahCxoQAKCRAADmhBGVaC FYt1D/4gDF21xjGVeK2OCgNDJDwwQIAhQ+POJRW/LnUCyBsCodppfZgvOlztiRxTQY8hDln7pkA /0JBBL5d3Wm5z17lRzJer29pJX2RnxyHJNE4EW8GUhCCfgsEMpQ+8K24h+BP2GS45JqjLXuuCAQ AOxXkSg3co40fpNg5HoRTvTNMCBGZu0uO+uFPz+jEXouihz0LAAcFOt4XHYvy20xnAaxDIMvpSr X9QCRhnBITWU4+YuI7lIAymK2kYu0yOiJMrRr2k4iy7lUx0AhS7ox+64wJgEAVE5xyAnhRsRplR FEcV9sNWyh3PNNXA3gROeqkOkIyofFHUeGftyvxg4CRGcT+XQgfHnOuCvfAUxeZJ73BSLte9iy1 SjeceyT18Sx089vx2L8GaDJxBsxSRnORbFkW6rC8CyQxUFKLEgUpp7R6MAjEzCDdqn0VoDy+ThW TerSDdP2CfmfKB09+/h3NS2HfOeqo5p4VzGkexzQMYn9TRzmZ1fIRP/Rq7P4+aNMiquVk8Ak0xj yA5DeWdIMtY2YJcLfa0PuBDkHDHkvT2Fp3uC+L7tWrUo1kEynA+M9I44sSfN3fWUQhXNd8/yLea AA1i8e592Ht9S+THZ1rNKVuNsiulM00HkfKIiyULDKqIeWJaZpI7IHPCK263be5r8YkjCyyJP90 d4H9BqMYUkzuMgg== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 In the context of a CB_NOTIFY callback, we may not have easy access to a svc_export. nfsd will not currently grant a delegation on a the V4 root however, so this should be safe. Signed-off-by: Jeff Layton --- fs/nfsd/nfs4xdr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 703caa2ee7dc..1fc4ce2357c0 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -3260,7 +3260,7 @@ static __be32 nfsd4_encode_fattr4_change(struct xdr_stream *xdr, { const struct svc_export *exp = args->exp; - if (unlikely(exp->ex_flags & NFSEXP_V4ROOT)) { + if (exp && unlikely(exp->ex_flags & NFSEXP_V4ROOT)) { u32 flush_time = convert_to_wallclock(exp->cd->flush_time); if (xdr_stream_encode_u32(xdr, flush_time) != XDR_UNIT) -- 2.54.0