Re: [patch 5/6] ps3: BD/DVD/CD-ROM Storage Driver

On Fri, Jul 13 2007, Geert Uytterhoeven wrote:

quoted

It's probably a good idea to have the flush_kernel_dcache_page() in there
anyway, if only to serve as an example for people that copy it into
architecture-independent drivers, same as what we do for the
k{,un}map_atomic() that is also not required on ppc64.

Now my next question: why should I add it, if currently no single driver in
mainline calls flush_kernel_dcache_page()? 

`git grep' finds it in the following files only:
    Documentation/cachetlb.txt
    arch/parisc/kernel/cache.c
    arch/parisc/kernel/pacache.S
    include/asm-parisc/cacheflush.h
    include/linux/highmem.h

Not many drivers fiddle around with stuff like this, it's usually hidden
behind the dma api or in helpers.

-- 
Jens Axboe