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The RPC_TASK_KILLED flag should really not be set from another context because it can clobber data in the struct task when task->tk_flags is changed non-atomically. Let's therefore swap out RPC_TASK_KILLED with an atomic flag, and add a function to set that flag and safely wake up the task. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>