From: Nick Piggin <nickpiggin@yahoo.com.au>
To: markh@compro.net
Cc: dmarkh@cfl.rr.com, linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: get_user_pages ?
Date: Fri, 21 Apr 2006 06:00:46 +1000 [thread overview]
Message-ID: <4447E86E.9000507@yahoo.com.au> (raw)
In-Reply-To: <4447E6C4.9070207@compro.net>
Mark Hounschell wrote:
> Nick Piggin wrote:
>>This area is going through some changes lately. If you want something to
>>quickly get things working, removing VM_PFNMAP from your vma flags should
>>work.
>>
>
>
> Yes, that actually does work while the task is running but as soon as I
> exit the task the machine freezes.
Hmm. Does it freeze, or oops? (ie. were you in X and missed the oops)
Can you get a sysrq backtrace?
Oh, hmm you'll need to increment the refcount of each page before
mapping it. That's probably the problem.
OK, I'd suggest either using vm_insert_page, or converting it all over
to a ->nopage handler then.
--
SUSE Labs, Novell Inc.
Send instant messages to your online friends http://au.messenger.yahoo.com
next prev parent reply other threads:[~2006-04-21 5:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-20 10:08 get_user_pages ? Mark Hounschell
2006-04-20 11:50 ` Nick Piggin
2006-04-20 19:53 ` Mark Hounschell
2006-04-20 20:00 ` Nick Piggin [this message]
2006-04-21 12:29 ` Mark Hounschell
2006-04-21 14:52 ` Mark Rustad
2006-04-22 4:09 ` Nick Piggin
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