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 738B73DB9A for ; Mon, 4 Mar 2024 13:35:40 +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=1709559340; cv=none; b=ZOpMERj/XDRqSt27EufZ2E9Tevhht7Su9NV15ZRHhV+S/lq5vxCAHAZfgVzHrNr5MFWDIICJICKzSMAvINoCzCJESz1UxfHR8ZMoRP4ZzIid5J7UcgU8aIR05Dm2X6zmqe2e+Bi45kv0nbqKQZlrSGregGLHqqwIQ3qW2JYrUeE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709559340; c=relaxed/simple; bh=vGMOA4athdT2Fcv4prWw9EPjvYdFEaYpw4WiFPZ5WgQ=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=HcHiQ21K9oihF1icZ6V6+22TwB3Av4peaVg9HDDODyDjxStbgkXee7IemwEFokwECSue256KlXpIIlE8EhE8KcXBKywWyViEU6IRNatCW2Rq8H1HW0jE3pV+lhouV5BTU2Im9u6MbUHXvEkCLvELhm3FwE2l1waprZCwXhA44QY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=q6A1GT2M; 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="q6A1GT2M" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7ACABC433C7; Mon, 4 Mar 2024 13:35:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1709559340; bh=vGMOA4athdT2Fcv4prWw9EPjvYdFEaYpw4WiFPZ5WgQ=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=q6A1GT2Mej/0XOl1YNiMQoCDaactDh+KoUnyBXrXsvsuxIflolxMZ+mzec2Bu/coT Now/OVdtUS1xQxc8655pYIuagq0hGTMv7gu6cXUiaQtH/JaHwRi2LJ5k9drScWmp6u LSIM2DexIs1dlZLI0jRCuh4xZkHabBxHY3IdAIvf45EZT1RlJxWU+8vuoBShXOrYmQ bFZaaMMtpHzSxP4k8IFfU251ISpgMY3Wj/d3FgZpT6yA7uvBC763aExgtTNlRF8CkT C2WK5xrRD6/+dUGIIfdg/5YqZwdYHVIPsYAQ3sTqv62UeFSTewP0WoCnb3eTxbwN03 41bPhFHUnivtQ== Message-ID: Subject: Re: [PATCH] NFS: Restore -EIO as error to return when "umount -f" aborts request. From: Jeff Layton To: NeilBrown , Trond Myklebust , Anna Schumaker Cc: linux-nfs@vger.kernel.org, Zhitao Li Date: Mon, 04 Mar 2024 08:35:38 -0500 In-Reply-To: <170909199843.24797.6320949640369986924@noble.neil.brown.name> References: <170909199843.24797.6320949640369986924@noble.neil.brown.name> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; 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QiErRVPpB7VzA/pYV5Mdy7GMbPjmO0IpoL0tVZ8JvUzUZXB3ErS/dJflvboAAQeLpLCkQjqZiQ/DCmgJCrBJst9Xc7YsKKS379Tc3GU33HNSpaOxs2NwfzoesyjKU+P35czvXWTtj7KVVSj3SgzzFk+gLx8y2Nvt9iESdZ1Ustv8tipDsGcvIZ43MQwqU9YbLg8k4V9ch+Mo8SE+C0jyZYDCE2ZGf3OztvtSYMsTnF6/luzVyej1AFVYjKHORzNoTwdHUeC+9/07GO0bMYTPXYvJ/vxBFm3oniXyhgb5FtABEBAAGJAh8EGAECAAkFAk6V0TwCGwwACgkQAA5oQRlWghXhZRAAyycZ2DDyXh2bMYvI8uHgCbeXfL3QCvcw2XoZTH2l2umPiTzrCsDJhgwZfG9BDyOHaYhPasd5qgrUBtjjUiNKjVM+Cx1DnieR0dZWafnqGv682avPblfi70XXr2juRE/fSZoZkyZhm+nsLuIcXTnzY4D572JGrpRMTpNpGmitBdh1l/9O7Fb64uLOtA5Qj5jcHHOjL0DZpjmFWYKlSAHmURHrE8M0qRryQXvlhoQxlJR4nvQrjOPMsqWD5F9mcRyowOzr8amasLv43w92rD2nHoBK6rbFE/qC7AAjABEsZq8+TQmueN0maIXUQu7TBzejsEbV0i29z+kkrjU2NmK5pcxgAtehVxpZJ14LqmN6E0suTtzjNT1eMoqOPrMSx+6vOCIuvJ/MVYnQgHhjtPPnU86mebTY5Loy9YfJAC2EVpxtcCbx2KiwErTndEyWL+GL53LuScUD7tW8vYbGIp4RlnUgPLbqpgssq2gwYO9m75FGuKuB2+2bCGajqalid5nzeq9v7cYLLRgArJfOIBWZrHy2m0C+pFu9DSuV6SNr2dvMQUv1V58h0FaSOxHVQnJdnoHn13g/CKKvyg2EMrMt/EfcXgvDwQbnG9we4xJiWOIOcsvrWcB6C6lWBDA+In7w7SXnnok kZWuOsJdJQdmwlWC5L5ln9xgfr/4mOY38B0U= Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.4 (3.50.4-1.fc39) Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Wed, 2024-02-28 at 14:46 +1100, NeilBrown wrote: > When "umount -f" is used to abort all outstanding requests on an NFS > mount, some pending systemcalls can be expected to return an error. > Currently this error is ERESTARTSYS which should never be exposed to > applications (it should only be returned due to a signal). >=20 > Prior to Linux v5.2 EIO would be returned in these cases, which it is > more likely that applications will handle. >=20 > This patch restores that behaviour so EIO is returned. >=20 > Reported-and-tested-by: Zhitao Li > Closes: https://lore.kernel.org/linux-nfs/CAPKjjnrYvzH8hEk9boaBt-fETX3VD2= cjjN-Z6iNgwZpHqYUjWw@mail.gmail.com/ > Fixes: ae67bd3821bb ("SUNRPC: Fix up task signalling") > Signed-off-by: NeilBrown > --- > include/linux/sunrpc/sched.h | 2 +- > net/sunrpc/clnt.c | 2 +- > net/sunrpc/sched.c | 6 +++--- > 3 files changed, 5 insertions(+), 5 deletions(-) >=20 > diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h > index 2d61987b3545..ed3a116efd5d 100644 > --- a/include/linux/sunrpc/sched.h > +++ b/include/linux/sunrpc/sched.h > @@ -222,7 +222,7 @@ void rpc_put_task(struct rpc_task *); > void rpc_put_task_async(struct rpc_task *); > bool rpc_task_set_rpc_status(struct rpc_task *task, int rpc_status); > void rpc_task_try_cancel(struct rpc_task *task, int error); > -void rpc_signal_task(struct rpc_task *); > +void rpc_signal_task(struct rpc_task *, int); > void rpc_exit_task(struct rpc_task *); > void rpc_exit(struct rpc_task *, int); > void rpc_release_calldata(const struct rpc_call_ops *, void *); > diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c > index cda0935a68c9..cdbdfae13030 100644 > --- a/net/sunrpc/clnt.c > +++ b/net/sunrpc/clnt.c > @@ -895,7 +895,7 @@ void rpc_killall_tasks(struct rpc_clnt *clnt) > trace_rpc_clnt_killall(clnt); > spin_lock(&clnt->cl_lock); > list_for_each_entry(rovr, &clnt->cl_tasks, tk_task) > - rpc_signal_task(rovr); > + rpc_signal_task(rovr, -EIO); > spin_unlock(&clnt->cl_lock); > } > EXPORT_SYMBOL_GPL(rpc_killall_tasks); > diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c > index 6debf4fd42d4..e4f36fe16808 100644 > --- a/net/sunrpc/sched.c > +++ b/net/sunrpc/sched.c > @@ -852,14 +852,14 @@ void rpc_exit_task(struct rpc_task *task) > } > } > =20 > -void rpc_signal_task(struct rpc_task *task) > +void rpc_signal_task(struct rpc_task *task, int err) > { > struct rpc_wait_queue *queue; > =20 > if (!RPC_IS_ACTIVATED(task)) > return; > =20 > - if (!rpc_task_set_rpc_status(task, -ERESTARTSYS)) > + if (!rpc_task_set_rpc_status(task, err)) > return; > trace_rpc_task_signalled(task, task->tk_action); > set_bit(RPC_TASK_SIGNALLED, &task->tk_runstate); > @@ -992,7 +992,7 @@ static void __rpc_execute(struct rpc_task *task) > * clean up after sleeping on some queue, we don't > * break the loop here, but go around once more. > */ > - rpc_signal_task(task); > + rpc_signal_task(task, -ERESTARTSYS); > } > trace_rpc_task_sync_wake(task, task->tk_action); > } This seems like the right thing to do. Reviewed-by: Jeff Layton