From: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>
To: Peter Zijlstra <a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>
Cc: "J. Bruce Fields"
<bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>,
Herbert Xu
<herbert-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Trond Myklebust <trond-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org>,
Nick Piggin <npiggin-l3A5Bk7waGM@public.gmane.org>
Subject: Re: nfs client lockdep warning
Date: Mon, 12 Jan 2009 13:10:39 +0100 [thread overview]
Message-ID: <20090112121039.GA27332@elte.hu> (raw)
In-Reply-To: <1231761731.4371.7.camel@laptop>
* Peter Zijlstra <a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org> wrote:
> Subject: lockdep,mm: fix might_fault() annotation
>
> Some code (nfs/sunrpc) uses socket ops on kernel memory while holding
> the mmap_sem, this is safe because kernel memory doesn't get paged out,
> therefore we'll never actually fault, and the might_fault() annotations
> will generate false positives.
>
> Signed-off-by: Peter Zijlstra <a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>
applied to tip/core/urgent, thanks guys!
I also added a:
Reported-by: "J. Bruce Fields" <bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
line as we always want to preserve the chain of bug reports and attribute
them.
Ingo
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prev parent reply other threads:[~2009-01-12 12:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20090108203658.GE19312@fieldses.org>
[not found] ` <1231447707.7179.10.camel@heimdal.trondhjem.org>
[not found] ` <1231447707.7179.10.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-08 21:20 ` nfs client lockdep warning J. Bruce Fields
[not found] ` <20090108212056.GF19312-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2009-01-09 4:33 ` Herbert Xu
2009-01-09 5:58 ` Peter Zijlstra
2009-01-09 6:23 ` Herbert Xu
2009-01-09 6:51 ` Peter Zijlstra
2009-01-09 20:29 ` J. Bruce Fields
2009-01-12 12:02 ` Peter Zijlstra
2009-01-12 12:10 ` Ingo Molnar [this message]
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