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Date: Thu, 28 Apr 2011 11:41:07 +0800
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Subject: where to set framebuffer page read-only,when using differred IO?
From: april <aapril03@gmail.com>
To: linux-kernel@vger.kernel.org
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Hi all:
I'm writing a driver, and want to catch the cpu write and just flush
page that cpu write before device engine access.
may be some thing like differred IO.
I read the differred IO and fb 's code, I can't found where it set the
page table entries for framebuffer pages to read-only.

Could anyone help to show where the frame buffer page set to read-only?

Thanks in advance
Aapril