From: Gerd Hoffmann <kraxel@suse.de>
To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: Xen devel list <xen-devel@lists.xensource.com>
Subject: Re: [patch 6/6] netif_release_rx_bufs
Date: Fri, 18 Aug 2006 08:43:06 +0200 [thread overview]
Message-ID: <44E5617A.20003@suse.de> (raw)
In-Reply-To: <C10A4FDF.103B%Keir.Fraser@cl.cam.ac.uk>
Keir Fraser wrote:
>
>> How can I do that? gnttab_end_foreign_transfer_ref() doesn't cut it, it
>> will not succeed unconditionally ...
>
> The function will not spin unboundedly and, when it returns, the grant is
> definitely no longer active. If any page was transferred via the grant, it
> is returned to the caller (else zero is returned). It does just what you
> need.
Oh, ok. I assumed zero return means it failed. Guess I just have to
keep track of the original mfns so I can map them back into the address
space in case no page was transfered, right?
cheers,
Gerd
--
Gerd Hoffmann <kraxel@suse.de>
http://www.suse.de/~kraxel/julika-dora.jpeg
next prev parent reply other threads:[~2006-08-18 6:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-17 14:13 [patch 6/6] netif_release_rx_bufs Gerd Hoffmann
2006-08-17 15:04 ` Keir Fraser
2006-08-17 15:13 ` Gerd Hoffmann
2006-08-17 15:54 ` Keir Fraser
2006-08-18 6:43 ` Gerd Hoffmann [this message]
2006-08-18 8:54 ` Keir Fraser
2006-08-18 11:34 ` Gerd Hoffmann
2006-08-18 12:25 ` Keir Fraser
2006-08-18 12:41 ` Gerd Hoffmann
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