Re: Trouble with NFS with -mm3, -mm4, and -mm5

[Neil Brown]

On Saturday May 22, maillist@xxxxxxxxx wrote:
> ext3. It works under the standard 2.6.6 without the mm patches

Hmmm.... I hit the exact same BUG in dcache.h in a completely
different circumstance (during readlink("/proc/self/exe") in perl).
It was on ext3 in a recent -mm, but had no connection with nfs.


I'm wondering if something in recent dcache or ext3 patches have
caused us to end up with negative d_count on a dentry.  This could
cause the line 276 BUG_ON to happen at weird places.

Could you try changing that line from

		BUG_ON(!atomic_read(&dentry->d_count));

to

		BUG_ON(atomic_read(&dentry->d_count) <= 0);

and see if that make it fall over more quickly?

NeilBrown
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