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Date:	Fri, 23 Mar 2012 01:42:51 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Minchan Kim <minchan@...nel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Hugh Dickins <hughd@...gle.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Ben Herrenschmidt <benh@...nel.crashing.org>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	Christopher Li <sparse@...isli.org>
Subject: Re: [PATCH 00/16] mm: prepare for converting vm->vm_flags to 64-bit

On Thu, Mar 22, 2012 at 04:09:44PM -0700, Andrew Morton wrote:

> > Thanks. Looks like "__nocast" totally undocumented.
> > It would be nice to add something about this into Documentation/sparse.txt
> 
> Yup, Chris has added this to his todo list (thanks!).

Alternatively, we could just remove the remaining instances in the kernel -
cputime_t is the only borderline reasonable one there; xfs ones should be
__bitwise and so should zd_addr_t thing (with cpu_to_le16() moved from
uses of those suckers to macro definitions).  Hell knows - I suspect that
cputime_t also might've been turned into __bitwise u64, but I hadn't checked
if we ever do plain arithmetics on those...
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