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From: David Vrabel <david.vrabel@citrix.com>
To: Jan Beulich <JBeulich@suse.com>,
	david.vrabel@citrix.com, boris.ostrovsky@oracle.com,
	Juergen Gross <JGross@suse.com>
Cc: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] xenbus: don't bail early from xenbus_dev_request_and_reply()
Date: Thu, 7 Jul 2016 12:36:48 +0100	[thread overview]
Message-ID: <577E3ED0.906__16478.7567141049$1467891510$gmane$org@citrix.com> (raw)
In-Reply-To: <577E219402000078000FBDB6@prv-mh.provo.novell.com>

On 07/07/16 08:32, Jan Beulich wrote:
> We must not skip the transaction_end() call for a failed
> XS_TRANSACTION_START. The removed code fragment got introduced by
> commit 027bd7e899 ("xen/xenbus: Avoid synchronous wait on XenBus
> stalling shutdown/restart") without its description really indicating
> why it was added (and hence I can't identify whether a more complex
> change might be needed here).

If sending the XS_TRANSACTION_END message failed, then the transaction
is still open and transaction_end() should not be called.

However, if sending an XS_TRANSACTION_START failed, then
transaction_end() should be called.

So, yes a more complex fix is needed here.


Xen-devel mailing list

  parent reply	other threads:[~2016-07-07 11:36 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-07  7:25 [PATCH 0/2] xenbus: xenbus_dev_request_and_reply() adjustments Jan Beulich
2016-07-07  7:32 ` [PATCH 1/2] xenbus: don't bail early from xenbus_dev_request_and_reply() Jan Beulich
2016-07-07  7:32 ` [PATCH 2/2] xenbus: simplify xenbus_dev_request_and_reply() Jan Beulich
     [not found] ` <577E219402000078000FBDB6@prv-mh.provo.novell.com>
2016-07-07 11:36   ` David Vrabel [this message]
     [not found]   ` <577E3ED0.906@citrix.com>
2016-07-07 12:09     ` [PATCH 1/2] xenbus: don't bail early from xenbus_dev_request_and_reply() Jan Beulich
     [not found]     ` <577E629C02000078000FC32F@prv-mh.provo.novell.com>
2016-07-07 12:17       ` David Vrabel
     [not found]       ` <577E4865.1080307@citrix.com>
2016-07-07 12:23         ` Jan Beulich
     [not found]         ` <577E65CB02000078000FC35B@prv-mh.provo.novell.com>
2016-07-07 13:13           ` David Vrabel
     [not found]           ` <577E5565.40302@citrix.com>
2016-07-07 13:22             ` David Vrabel
     [not found]             ` <577E5793.5030209@citrix.com>
2016-07-07 13:35               ` Jan Beulich
2016-07-08 10:18                 ` David Vrabel
2016-07-08 10:56 ` [PATCH 0/2] xenbus: xenbus_dev_request_and_reply() adjustments David Vrabel

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