On Fri, Jul 02, 2010 at 01:41:14PM -0400, Chris Metcalf wrote:
quoted text
> This allows a list_head (or hlist_head, etc.) to be used from places
> that used to be impractical, in particular <asm/processor.h>, which
> used to cause include file recursion: <linux/list.h> includes
> <linux/prefetch.h>, which always includes <asm/processor.h> for the
> prefetch macros, as well as <asm/system.h>, which often includes
> <asm/processor.h> directly or indirectly.
> 
> This avoids a lot of painful workaround hackery on the tile
> architecture, where we use a list_head in the thread_struct to chain
> together tasks that are activated on a particular hardwall.
> 
> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

Reviewed-by: Matthew Wilcox <willy@linux.intel.com>

-- 
Matthew Wilcox				Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."
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