Re: [PATCH]: uClinux (MMU-less) patches against 2.5.28

David Woodhouse (dwmw2@infradead.org)
Fri, 26 Jul 2002 10:39:48 +0100

alan@lxorguk.ukuu.org.uk said:
> It doesn't work with an MMU either. Consider O_DIRECT file writing
> from such a page

Hmmm.

O_DIRECT writing of data from an XIP-mapped page to a file on the same chip
ain't ever going to work. Writing to something elsewhere should be fine --
if a page is locked when the chip driver wants to go talk to the chip, the
chip driver has to wait for that page to become unlocked. No?

--
dwmw2




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