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From: "Jean-Sébastien Pédron" <jean-sebastien.pedron@dumbbell.fr>
To: David Herrmann <dh.herrmann@gmail.com>
Cc: "dri-devel@lists.freedesktop.org" <dri-devel@lists.freedesktop.org>
Subject: Re: Questions about TTM buffer object maping
Date: Fri, 12 Jul 2013 00:04:57 +0200	[thread overview]
Message-ID: <51DF2C09.2010608@dumbbell.fr> (raw)
In-Reply-To: <CANq1E4Qr3aY4+jrZ-weKuFsuK-Z39uD7AxMeJ4C1CkrrkhF7dg@mail.gmail.com>

Le 11/07/2013 23:51, David Herrmann a écrit :
> ->vm_open() isn't called for the first mmap(), afaik (only called
> during fork()s or similar). So the reference in ttm_bo_mmap() is a
> replacement for the reference you take in the ->vm_open() callback.

So the reference is acquired either in ttm_bo_mmap() or in 
ttm_bo_vm_open(), and always released in ttm_bo_vm_close().

Thanks to both of you!

-- 
Jean-Sébastien Pédron

      reply	other threads:[~2013-07-11 22:04 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-11  0:27 Questions about TTM buffer object maping Jean-Sébastien Pédron
2013-07-11  1:00 ` Jerome Glisse
2013-07-11  6:24   ` Daniel Vetter
2013-07-11 14:06     ` Jerome Glisse
2013-07-11 21:43       ` Jean-Sébastien Pédron
2013-07-11 21:51         ` Jerome Glisse
2013-07-11 21:51         ` David Herrmann
2013-07-11 22:04           ` Jean-Sébastien Pédron [this message]

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