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Re: [Xen-devel] building blktap as a module

To: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] building blktap as a module
From: Gerd Hoffmann <kraxel@xxxxxxx>
Date: 2006年10月16日 16:07:25 +0200
Cc: Andrew Warfield <Andrew.Warfield@xxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Jan Beulich <jbeulich@xxxxxxxxxx>
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Keir Fraser wrote:
>
>
> On 16/10/06 12:45, "Gerd Hoffmann" <kraxel@xxxxxxx> wrote:
>
>> The linux kernel does call the drivers release() method when the last
>> reference is gone. If you call close() with mappings still being
>> active, then ->release() is _not_ called when you close the file handle
>> but when the last mapping is unmapped. Thus there is no point in trying
>> to handle active mappings there ;)
>
> I.e., they'll have been unmapped already?
Yes.
> As you say, either way the zap is
> not needed...
Yep, I just wanted to fill in some more background info ...
cheers,
 Gerd
-- 
Gerd Hoffmann <kraxel@xxxxxxx>
http://www.suse.de/~kraxel/julika-dora.jpeg
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