linux-kernel - Re: [PATCH] Ensure that walk_page_range()'s start and end are page-aligned

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Message-ID: <87k43cx7u8.fsf@danplanet.com>
Date:	Fri, 24 Feb 2012 13:03:11 -0800
From:	Dan Smith <danms@...ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	David Rientjes <rientjes@...gle.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, dave@...ux.vnet.ibm.com
Subject: Re: [PATCH] Ensure that walk_page_range()'s start and end are page-aligned

AM> Well...  why should we apply the patch?  Is there some buggy code
AM> which is triggering the problem?  Do you intend to write some buggy
AM> code to trigger the problem?  ;)

Well, I already did and it took me longer to figure out than it should
have :)

AM> Also, as it's a developer-only thing we should arrange for the
AM> overhead to vanish when CONFIG_DEBUG_VM=n?

Heh, if you like that flavor, see the previous version of the patch at
the top of this thread :)

-- 
Dan Smith
IBM Linux Technology Center
email: danms@...ibm.com
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