linux-kernel - Re: Linux 2.6.25-rc7 sparc64 loops forever on cat /proc/<pid>/pagemap

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Message-Id: <200803261302.46313.m.kozlowski@tuxland.pl>
Date:	Wed, 26 Mar 2008 13:02:45 +0100
From:	Mariusz Kozlowski <m.kozlowski@...land.pl>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>, sparclinux@...r.kernel.org
Subject: Re: Linux 2.6.25-rc7 sparc64 loops forever on cat /proc/<pid>/pagemap

Hello,

cat /proc/<pid>/pagemap 

and 

cat /proc/<pid>/task/<pid>/pagemap

eats up to 100% of CPU while looping forever somewhere. On the other
hand on my old x86 the same commands take well below 1s so I
guess that is the expected behaviour.

PS. I'll be offline till tommorow just in case I was sent some patches to test.

	Mariusz

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