linux-kernel - Re: [REGRESSION] commit 66c1ca0: {fbmem: fix fb_info->lock and mm->mmap

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Date:	Fri, 10 Apr 2009 19:40:34 +0200
From:	Krzysztof Helt <krzysztof.h1@...zta.fm>
To:	Eric Miao <eric.y.miao@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrea Righi <righi.andrea@...il.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [REGRESSION] commit 66c1ca0: {fbmem: fix fb_info->lock and 
 mm->mmap_sem ...} causes Xfbdev not working

On Thu, 9 Apr 2009 19:36:24 +0800
Eric Miao <eric.y.miao@...il.com> wrote:

> This happens on my Marvell PXA310-based Littleton platform with
> Angstrom Distribution. The offending paths are many:
> 
> FBIOPUT_VSCREENINFO:
>   lock_fb_info()
>   --> fb_set_var()
>     --> fb_notifier_call_chain() [FBINFO_MISC_USEREVENT]
>       --> fbcon_event_notifier() [FB_EVENT_MODE_CHANGE]
>         --> lock_fb_info()
> 
> OK, now hang. I'd suggest a clean fix to the original assumption of
> circular locking
> issue and revert this commit first.
> 

Who should I ask to revert this commit?

Regards,
Krzysztof

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