linux-kernel - Re: [PATCH v2 5/7] xen/9pfs: send requests to the backend

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Message-ID: <02343d8b-7602-181c-b21f-ba50d79415d5@oracle.com>
Date:   Thu, 9 Mar 2017 10:46:10 -0500
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Stefano Stabellini <sstabellini@...nel.org>,
        xen-devel@...ts.xenproject.org
Cc:     linux-kernel@...r.kernel.org,
        Stefano Stabellini <stefano@...reto.com>, jgross@...e.com,
        Eric Van Hensbergen <ericvh@...il.com>,
        Ron Minnich <rminnich@...dia.gov>,
        Latchesar Ionkov <lucho@...kov.net>,
        v9fs-developer@...ts.sourceforge.net
Subject: Re: [PATCH v2 5/7] xen/9pfs: send requests to the backend

On 03/08/2017 06:58 PM, Stefano Stabellini wrote:
> Implement struct p9_trans_module create and close functions by looking
> at the available Xen 9pfs frontend-backend connections. We don't expect
> many frontend-backend connections, thus walking a list is OK.
>
> Send requests to the backend by copying each request to one of the
> available rings (each frontend-backend connection comes with multiple
> rings). Handle the ring and notifications following the 9pfs
> specification. If there are not enough free bytes on the ring for the
> request, wait on the wait_queue: the backend will send a notification
> after consuming more requests.
>
> Signed-off-by: Stefano Stabellini <stefano@...reto.com>
> CC: boris.ostrovsky@...cle.com
> CC: jgross@...e.com
> CC: Eric Van Hensbergen <ericvh@...il.com>
> CC: Ron Minnich <rminnich@...dia.gov>
> CC: Latchesar Ionkov <lucho@...kov.net>
> CC: v9fs-developer@...ts.sourceforge.net
> ---

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>