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 574C04C957F; Thu, 11 Jun 2026 17:50:57 +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=1781200261; cv=none; b=orPaTLAcQZgvpd4LhbOi0hlDb0sUSbcDgKaOtGwXw4vLLDox2v5X5PwFd5/eM2vudmVYS4xw47UzEMHhibQo0cWJACAzOkhmCS94kz/gKN+4kViMGP8W0ylAxI6cmUBBzQRW45Mxv0q5ebe9u9mG0ThAUVbYJJy8rk1MPs6+FP0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781200261; c=relaxed/simple; bh=SeZUHcpxYlvG88yAy9B42bUe1TCQHy1VujzGUXl1RxQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GyhGO0cpxcbEa1PJ095YBlfwjR7lS2zofX98CVvg7QqO9vav+gP4Kp8WaIsWkW3BEQF6LR43w0OI3Skf2mmCU92eT+pD8K9K6GYt2QNJfWV6JLpYs9UfVcpx3NxAtjNtDD8t3X7l3pZH2IzOihBwtFb+SNO8DSFyUR2UgZDF/uk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mP/C6hjg; 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="mP/C6hjg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1EF951F0089A; Thu, 11 Jun 2026 17:50:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781200256; bh=dmd0f6pbCz4d5WUptOFm0ECwKoGxHEd52JM8lI1jNZ8=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=mP/C6hjgRsLe/7m4DiopSQa/UmIq+nSvRbwcLAdCwsr1ruOw7Eo7Rfpg/6YWwc2DY qBsjF/vX6YsfSbK3HvyPiJ5lyQOYXgYvYUNV0lZpPn2e/t24kbmyZYA9ajLlnerGVx sGGG1YYGKkxsXl3Hpi7mp55FoHDnoFfFYtIanOVYL16pMAGeF2mRSykI02RbSn2E1f s2+119KeywAnGRNtfcxAZb7mTFV3KKFedpAGLgNRkyGWOi0iLIMzLTkCVZ5AajoA3f XndOavrb1YAa+Zjz+A8dIs5T7y/CR3N2eQbd1laSioqkc6bIARYfL87eKSwPyNvbqh 70EGo/KTvBhTA== From: Jeff Layton Date: Thu, 11 Jun 2026 13:50:19 -0400 Subject: [PATCH v6 13/20] nfsd: allow nfsd4_encode_fattr4_change() to work with no export Precedence: bulk X-Mailing-List: linux-kernel@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: <20260611-dir-deleg-v6-13-4c45080e5f3f@kernel.org> References: <20260611-dir-deleg-v6-0-4c45080e5f3f@kernel.org> In-Reply-To: <20260611-dir-deleg-v6-0-4c45080e5f3f@kernel.org> To: NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Trond Myklebust , Anna Schumaker , Jonathan Corbet , Shuah Khan , Chuck Lever 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=SeZUHcpxYlvG88yAy9B42bUe1TCQHy1VujzGUXl1RxQ=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBqKvViloBuCoWXKJAgwh5cjzQvC5hw5bEcN9rRM CEJat0HYS+JAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCair1YgAKCRAADmhBGVaC FcdrEACDmx4r+qzIF8nMXEnogkt5PnwCsrUgUash/2mQZ2LFdoECpmj3B4iNC68R8L+nn5bLzCS Rax9muOfzwTWNx8J7OGz4jlUbI3gZDwdhCYqMFLGINmW4m2mnmeFtQNV5J4POK0XqiHzqKpTHFy n3ApKUNgZ9H2B6vsrLy11lsHvs/SrJqtpp2AcWlXwIVuYY7RYz8201Q9ZFBLd/+cRxXOH2LeZ00 CkHhf+YY9v2KeVHc9nGX+sCaWOCKIXj8azHqacnIs34+NC1Vf8XuQspi8TE8vntR4vCRHZXfHUI 0sLZ7CGTAr29FIR4ha/Q3kz8v8SrGPxJHppDeVauInwKEpVDXJK44OdDa6cVbJ0T5ZBXH807VAU EH77GFU4h33fXfwyHpAariUxefYFndfqQTNsNgWGxxLYzdYZpGiUMHkbClyzXd9A8b1wAoOk2+L uvGggdRaF9MwdjRa+NypmNU1eajvEeEKGTerkxuyFDNwjFPXVNSpjNYh3O5lRkeBfIZ6lg6lRPv E2rt2lWRTmBPA7NvU4fbhBNz9MZUBCKc9418G/uBG+1zgmpcWvbtDguwRNo8YL5cJVBReIReYYA pkUufxkhjSv/GLlmDt6yBv2Ywby3xlaT/Z7zxF7Zm+TWl98GKfP+SRfvKyGQip5fVO+bXGQcSp9 YwH4bCTdfe1/gng== 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 7d162e5fb6ec..18adab1d7ca2 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -3273,7 +3273,7 @@ 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