Re: nfs accesses of FAT fs folders causes deadlock on lock_super

[Fredrick Prashanth John Berchmans]

On Tue, May 4, 2010 at 3:32 AM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
> On Mon, May 03, 2010 at 10:59:42PM -0700, Fredrick Prashanth John Berchmans wrote:
>> The box was running kernel version 2.6.27.10.
>> But I think the FAT code has not changed much.
>
> But the nfsd code has and now doesn't call lookup from the filldir
> callback anymore.
>
>

Ah..I just noticed the changes in the nfsd code.

But in 2.6.27.10, can it be fixed by removing the lock_super in the
vfat_lookup.?
Because I saw some discussions long back of regressions due to
replacing lock_kernel by lock_super in FAT code.
Or should the sb mutex be unlocked before calling the callback filldir
in the __fat_readdir?

Thanks,
Fredrick
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