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 8DE2640DFB9; Tue, 28 Apr 2026 07:11:20 +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=1777360280; cv=none; b=Sz+NeQ8uRSsEHTl6LMTG9A9XFjOf3MPixF8iHGEs9nBLIvaJ7ABFuZmWzxWQ9ljxJqA6cWYR84z4gqIguW8tT5CSKeswydXdnKpJ7et8yazHYA+M9VHUjm5ECOUYWQb+/kNtcMS4qdFMgLOJB7h25Q67Q6djHTarwX+npMQm41A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777360280; c=relaxed/simple; bh=0uUgOvb+bJdqhTljagvaPA1ej0spqCQxXkWTbTCynIs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=m5cUqjutXZhC2fb0gVvZNtZBHyWY91HOfIcX/na1I+ZGbttIF2Bf0510xKy8/OgpGF8Wpu77b2dWO2+1b8cJeBs/6so0NwlNy+JHJOnbhOIGm61UojoK2IEN2iG9k0xkePVbEc0Ap7lTkSJLw7oIHZfpjgGNjOBImpvPougONkk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=aSd7pD8F; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="aSd7pD8F" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5A9FBC2BCAF; Tue, 28 Apr 2026 07:11:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777360280; bh=0uUgOvb+bJdqhTljagvaPA1ej0spqCQxXkWTbTCynIs=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=aSd7pD8FpHbD1tjdHK8UEgIYcZXCesp8o33dgFx5MTwv9ljWSSQv9Dzs9nB1mervB aUQFj7jcekKH5ms4SRkkNXsoviBTPZrAz4bA+WoT8zEUjliCwnIMVOOYXrSbqfu1u7 N8/bvGdoGe1f7Xvz+P2II7KCFttf+FYijaufcZhcM/OXUY9/JmWnjwZJokfqnj1809 +YTOYPeJODYJUny+KM6lbx60R+xP/qmEaRHubn5HtbSa8ob3Xx1deedXbaUmmlDkyN o72r8At4nDNzAnk04h3RoQiSEm2VY7V861zvzOksujthFohPSU3IfoeJgeUbrfsAtH +P6hq7Nb+WeYg== From: Jeff Layton Date: Tue, 28 Apr 2026 08:09:57 +0100 Subject: [PATCH v3 13/28] nfsd: make nfsd4_callback_ops->prepare operation bool return Precedence: bulk X-Mailing-List: linux-trace-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: <20260428-dir-deleg-v3-13-5a0780ba9def@kernel.org> References: <20260428-dir-deleg-v3-0-5a0780ba9def@kernel.org> In-Reply-To: <20260428-dir-deleg-v3-0-5a0780ba9def@kernel.org> To: Alexander Viro , Christian Brauner , Jan Kara , Chuck Lever , Alexander Aring , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Jonathan Corbet , Shuah Khan , NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Trond Myklebust , Anna Schumaker , Amir Goldstein Cc: Calum Mackay , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-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=3301; i=jlayton@kernel.org; h=from:subject:message-id; bh=0uUgOvb+bJdqhTljagvaPA1ej0spqCQxXkWTbTCynIs=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBp8F1QURinUO0OXQPDGJz6sv0kbqMjkacIXRj6X 6IG+jAH3L6JAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCafBdUAAKCRAADmhBGVaC Fci2EADCiUufbmqcxg6WQ+qAbSIn8769kVV1iugk5mJUlNOMWlDHGkqBPbp1yQBZdGdJCC39LKz sw44ghuPn+ZsFU/QEUHs5oG+2KH5YAkFtlnS0qoeaDDk1U7gMyB7enkP5pMObrUOVoE9luqVD3b DY1neM1+QNWWAGcpXjr0qR/28wReYfu9SxUUJWiWSyvJPDVeZnamPRWwK7zw+UjG1MelM/7waSK P7pDHFY6if0mL3tHkXmXCzUKYhFoEMMGzxmbDcclgh/FOAd9/9UuzNQZqTu4WSRV7LUx+aofxbk /qpkMAvZYV89/V4WgQITda1hXtFNLNb33LXk+05gHO8nCaxncqWiTOvHm7b7WdeJi4hoPPJrn5R rW6BmN42k7E1fV+6MyoXYPVqsL/b0yxk3R0Wqi9am1DAl/gxWAOdJwewXF2oVIATjs3RjpZUNxL tC1lJQtpZ+CTdaUlebDSs8153mRtv9l4jL05wccQFVCNXCVbBCX9K9FCIMbP4gz99wDuS3/5045 PAz3+YRssYluxUJvQRfkBpFph4jNx15NrscoujWUMT2jIEnxMo9u5V3+kAbEeQkOupulVaxg6sv tWGRahSzCxS4jj6nmtXU/nLeSzDm2KNc4emkJxEDi7AsUVsaNhSltECbcTfFuRugMO0+QSj+/W/ q26wtZA4fTXu2ng== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 For a CB_NOTIFY operation, we need to stop processing the callback if an allocation fails. Change the ->prepare callback operation to return true if processing should continue, and false otherwise. Signed-off-by: Jeff Layton --- fs/nfsd/nfs4callback.c | 5 ++++- fs/nfsd/nfs4layouts.c | 3 ++- fs/nfsd/nfs4state.c | 6 ++++-- fs/nfsd/state.h | 6 +++--- 4 files changed, 13 insertions(+), 7 deletions(-) diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 50827405468d..25bbf5b8814d 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -1715,7 +1715,10 @@ nfsd4_run_cb_work(struct work_struct *work) if (!test_and_clear_bit(NFSD4_CALLBACK_REQUEUE, &cb->cb_flags)) { if (cb->cb_ops && cb->cb_ops->prepare) - cb->cb_ops->prepare(cb); + if (!cb->cb_ops->prepare(cb)) { + nfsd41_destroy_cb(cb); + return; + } } cb->cb_msg.rpc_cred = clp->cl_cb_cred; diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c index c550b83f4432..8974e3d85d75 100644 --- a/fs/nfsd/nfs4layouts.c +++ b/fs/nfsd/nfs4layouts.c @@ -654,7 +654,7 @@ nfsd4_cb_layout_fail(struct nfs4_layout_stateid *ls, struct nfsd_file *file) } } -static void +static bool nfsd4_cb_layout_prepare(struct nfsd4_callback *cb) { struct nfs4_layout_stateid *ls = @@ -663,6 +663,7 @@ nfsd4_cb_layout_prepare(struct nfsd4_callback *cb) mutex_lock(&ls->ls_mutex); nfs4_inc_and_copy_stateid(&ls->ls_recall_sid, &ls->ls_stid); mutex_unlock(&ls->ls_mutex); + return true; } static int diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 6adce94e9fdb..c0046fc3c1b1 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -357,12 +357,13 @@ remove_blocked_locks(struct nfs4_lockowner *lo) } } -static void +static bool nfsd4_cb_notify_lock_prepare(struct nfsd4_callback *cb) { struct nfsd4_blocked_lock *nbl = container_of(cb, struct nfsd4_blocked_lock, nbl_cb); locks_delete_block(&nbl->nbl_lock); + return true; } static int @@ -5553,7 +5554,7 @@ bool nfsd_wait_for_delegreturn(struct svc_rqst *rqstp, struct inode *inode) return timeo > 0; } -static void nfsd4_cb_recall_prepare(struct nfsd4_callback *cb) +static bool nfsd4_cb_recall_prepare(struct nfsd4_callback *cb) { struct nfs4_delegation *dp = cb_to_delegation(cb); struct nfsd_net *nn = net_generic(dp->dl_stid.sc_client->net, @@ -5574,6 +5575,7 @@ static void nfsd4_cb_recall_prepare(struct nfsd4_callback *cb) list_add_tail(&dp->dl_recall_lru, &nn->del_recall_lru); } spin_unlock(&nn->deleg_lock); + return true; } static int nfsd4_cb_recall_done(struct nfsd4_callback *cb, diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index 811c148f36fc..7d2afe7dcc3e 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -98,9 +98,9 @@ struct nfsd4_callback { }; struct nfsd4_callback_ops { - void (*prepare)(struct nfsd4_callback *); - int (*done)(struct nfsd4_callback *, struct rpc_task *); - void (*release)(struct nfsd4_callback *); + bool (*prepare)(struct nfsd4_callback *cb); + int (*done)(struct nfsd4_callback *cb, struct rpc_task *task); + void (*release)(struct nfsd4_callback *cb); uint32_t opcode; }; -- 2.54.0