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: Thu, 17 Aug 2006 17:13:34 +0200 [thread overview]
Message-ID: <44E4879E.2060302@suse.de> (raw)
In-Reply-To: <C10A4423.1031%Keir.Fraser@cl.cam.ac.uk>
Keir Fraser wrote:
>> I think we need either a way to get back pages with transfer grants
>> without cooperation from the backend driver, or we need some way to say
>> "pretty pretty please, give me back my rx buffers" to the netback driver.
>
> Unlike a map grant, you can reclaim a transfer grant at any time. The only
> question is whether it has been used to transfer a page, or not.
How can I do that? gnttab_end_foreign_transfer_ref() doesn't cut it, it
will not succeed unconditionally ...
cheers,
Gerd
--
Gerd Hoffmann <kraxel@suse.de>
http://www.suse.de/~kraxel/julika-dora.jpeg
next prev parent reply other threads:[~2006-08-17 15:13 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 [this message]
2006-08-17 15:54 ` Keir Fraser
2006-08-18 6:43 ` Gerd Hoffmann
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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