linux-kernel - Re: [PATCH] filp->f_pos not correctly updated in proc_task

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Message-ID: <20090317181114.GW28946@ZenIV.linux.org.uk>
Date:	Tue, 17 Mar 2009 18:11:14 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Zhang Le <r0bertz@...too.org>
Cc:	Alexey Dobriyan <adobriyan@...il.com>,
	linux-kernel@...r.kernel.org, torvalds@...l.org, alan@...hat.com
Subject: Re: [PATCH] filp->f_pos not correctly updated in proc_task_readdir

On Tue, Mar 17, 2009 at 08:53:47PM +0800, Zhang Le wrote:
> > > way to go.
> > 
> > Except this bit:
> > 
> > fs/built-in.o: In function `proc_task_readdir':
> > compr_zlib.c:(.text+0x434b8): undefined reference to `__cmpdi2'
> > compr_zlib.c:(.text+0x434d4): undefined reference to `__cmpdi2'
> 
> Hi, I am sorry but I can't reproduce this.
> Are you sure this only happens after applying my patch?
> Would you please provide your fs/jffs2/compr_zlib.o and fs/proc/base.o?
> And what is your gcc version? I am using gcc 4.4 snapshot rev. 144705

The critical part is target architecture, not version...  switch on
long long ends up spewing library calls.  It's switch (pos) that
became switch (file->f_pos).  
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