dlm: Fix comment in dlm.h regarding lock_dlm() return values

[Steven Whitehouse]

The code in dlm_lock() explicitly tests for a return value of
-EAGAIN and changes it to zero in that case, so this function
can never return -EAGAIN. I'm not 100% sure that it can
return -ENOTCONN either, but the code paths are more tricky
to trace in that case, so I've left that one for now.

Signed-off-by: Steven Whitehouse <swhiteho@xxxxxxxxxx>

diff --git a/include/linux/dlm.h b/include/linux/dlm.h
index d4e02f5..3b4236c 100644
--- a/include/linux/dlm.h
+++ b/include/linux/dlm.h
@@ -112,7 +112,6 @@ int dlm_release_lockspace(dlm_lockspace_t *lockspace, int force);
  * Returns:
  * 0 if request is successfully queued for processing
  * -EINVAL if any input parameters are invalid
- * -EAGAIN if request would block and is flagged DLM_LKF_NOQUEUE
  * -ENOMEM if there is no memory to process request
  * -ENOTCONN if there is a communication error
  *


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