NFSv4: Fix a race in nfs_inode_reclaim_delegation()
If we race with a delegreturn before taking the spin lock, we currently end up dropping the delegation stateid. Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com> Tested-by: NOleg Drokin <green@linuxhacker.ru> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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