]> err.no Git - linux-2.6/commit
fbdev: mm: Deferred IO support
authorJaya Kumar <jayakumar.lkml@gmail.com>
Tue, 8 May 2007 07:37:37 +0000 (00:37 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Tue, 8 May 2007 18:15:26 +0000 (11:15 -0700)
commit60b59beafba875aef6d378078bce0baf2287ae14
treebb599c0e2ad43ee8f515a9f9af009442931b6a37
parent3a2842480bbef42c3c90e14c1f378360d8c20a0c
fbdev: mm: Deferred IO support

This implements deferred IO support in fbdev.  Deferred IO is a way to delay
and repurpose IO.  This implementation is done using mm's page_mkwrite and
page_mkclean hooks in order to detect, delay and then rewrite IO.  This
functionality is used by hecubafb.

[adaplas]
This is useful for graphics hardware with no directly addressable/mappable
framebuffer. Implementing this will allow the "framebuffer" to be accesible
from user space via mmap().

Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Documentation/fb/deferred_io.txt [new file with mode: 0644]
drivers/video/Kconfig
drivers/video/Makefile
drivers/video/fb_defio.c [new file with mode: 0644]
include/linux/fb.h
mm/rmap.c