On Tue, 2006-08-15 at 17:55 +0100, David Howells wrote:
> Trond Myklebust <trond.myklebust@fys.uio.no> wrote:
> 
> > Could you try pulling afresh from the NFS git tree? I've fixed up a couple
> > of issues in which rpc_pipefs was corrupting the dcache,
> 
> Which patches hold those fixes?  I'm seeing:
> 
> 	BUG: atomic counter underflow at:
> 	 [<c01d5b05>] _atomic_dec_and_lock+0x1d/0x30
> 	 [<c0169bd3>] dput+0x22/0x145
> 	 [<c8a2f726>] rpc_destroy_client+0xd9/0xee [sunrpc]
> 	 [<c8a2f89e>] rpc_shutdown_client+0xea/0xf1 [sunrpc]
> 	 [<c8a2f89e>] rpc_shutdown_client+0xea/0xf1 [sunrpc]
> 	 [<c886d842>] nfs_free_client+0x95/0xdd [nfs]
> 	 [<c886db38>] nfs_free_server+0xa9/0xd9 [nfs]
> 	 [<c8873fae>] nfs_kill_super+0xc/0x14 [nfs]
> 	 [<c015c033>] deactivate_super+0x4a/0x5d
> 	 [<c016df3e>] sys_umount+0x1d3/0x1f1
> 	 [<c016ac98>] destroy_inode+0x36/0x45
> 	 [<c0169bd3>] dput+0x22/0x145
> 	 [<c0157889>] __fput+0x146/0x170
> 	 [<c016cf48>] mntput_no_expire+0x11/0x59
> 	 [<c016df73>] sys_oldumount+0x17/0x1a
> 	 [<c0102b3f>] syscall_call+0x7/0xb
> 	 =======================
> 
> And I'm wondering if that's due to that problem.
> 
> I've applied the patch to fix the resource counting that's at the head of your
> git tree.

See attached mail. Alex confirmed that it fixes the corruption problems
he is seeing.

Cheers,
  Trond