Re: [PATCH] sh: replace mutexes which are used in SH-4 user page copy/clear functions in 2.6.22.X

[Paul M. <le...@li...>]

On Tue, Aug 14, 2007 at 05:08:16PM +0900, Katsuya MATSUBARA wrote:
> sh: replace mutexes which are used in SH-4 user page copy/clear
> functions in 2.6.22.X
> 
> This patch replaces mutexes in copy_user_pages() and clear_user_pages() 
> for SH-4 in 2.6.22.X. A 2.6.22.X kernel with CONFIG_PREEMPT_VOLUNTARY=y
> shows the following error because mutexes are sleepable.
> 
This has already been fixed in current git by kmap_coherent(), including
reclaiming the beginning of P3 space for vmalloc.