Re: [PATCH] Silence compiler warning

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On Mon, 2011-10-31 at 22:42 -0400, Jim Rees wrote: 
> Trond Myklebust wrote:
> 
>   On Mon, 2011-10-31 at 21:37 -0400, Jim Rees wrote: 
>   > I think this is still needed, isn't it?  I haven't tried compiling
>   > nfs-for-next but I don't see a fix for it in there.
>   
>   AFAICS, this is a bogus warning: if lo is uninitialised, we will
>   automatically exit with a return value of NFS4ERR_NOMATCHING_LAYOUT.
> 
> Yes, the warning is bogus.  I just want the damn compiler to shut up so I
> can see if there are any real warnings.

How about cleaning up the whole unnecessary "bool found" crap that has
it confused? You can easily replace that with a test for 'ino != NULL'.
We don't usually "fix" compiler bugs by changing valid kernel code, but
cleanups are acceptable if they help to clarify what is going on.

Oh, another thing: that code will currently race very nicely against
'umount', and looks capable of triggering the 'VFS: Busy inodes after
unmount of foo. Self-destruct in 5 seconds.  Have a nice day..." since
it doesn't do anything to pin the super block while holding a reference
to the inode.

-- 
Trond Myklebust
Linux NFS client maintainer

NetApp
Trond.Myklebust@xxxxxxxxxx
www.netapp.com

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