linux-kernel - Re: [PATCH 1/2] Report the pagesize backing a VMA in /proc/pid/smaps

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Message-Id: <20080923211140.DC16.KOSAKI.MOTOHIRO@jp.fujitsu.com>
Date:	Tue, 23 Sep 2008 21:15:33 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Dave Hansen <dave@...ux.vnet.ibm.com>
Cc:	kosaki.motohiro@...fujitsu.com, Mel Gorman <mel@....ul.ie>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>
Subject: Re: [PATCH 1/2] Report the pagesize backing a VMA in /proc/pid/smaps

> > The corollary is that someone running with a 64K base page kernel may be
> > surprised that the pagesize is always 4K. However I'll check if there is
> > a simple way of checking out if the MMU size differs from PAGE_SIZE.
> 
> Sure.  If it isn't easy, the best thing to do is probably just to
> document the "interesting" behavior.

Dave, please let me know getpagesize() function return to 4k or 64k on ppc64.
I think the PageSize line of the /proc/pid/smap and getpagesize() result should be matched.

otherwise, enduser may be confused.



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