* where to set framebuffer page read-only,when using differred IO?
@ 2011-04-28 3:41 april
0 siblings, 0 replies; only message in thread
From: april @ 2011-04-28 3:41 UTC (permalink / raw)
To: linux-kernel
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
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