From: Alexander Viro <viro@math.psu.edu>
To: Benjamin LaHaise <bcrl@redhat.com>
Cc: Linus Torvalds <torvalds@transmeta.com>,
linux-mm@kvack.org, Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: weirdness with ->mm vs ->active_mm handling
Date: Thu, 29 Aug 2002 19:45:49 -0400 (EDT) [thread overview]
Message-ID: <Pine.GSO.4.21.0208291940350.15425-100000@weyl.math.psu.edu> (raw)
In-Reply-To: <20020829193413.H17288@redhat.com>
On Thu, 29 Aug 2002, Benjamin LaHaise wrote:
> Hello,
>
> In trying to track down a bug, I found routines like generic_file_read
> getting called with current->mm == NULL. This seems to be a valid state
> for lazy tlb tasks, but the code throughout the kernel doesn't seem to
> assume that.
Lazy-TLB == "promise not to use a lot of stuff in the kernel". In particular,
any page fault in that state is a bug.
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next prev parent reply other threads:[~2002-08-29 23:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-29 23:34 Benjamin LaHaise
2002-08-29 23:45 ` Alexander Viro [this message]
2002-08-29 23:52 ` Benjamin LaHaise
2002-08-30 5:10 ` Linus Torvalds
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