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Clarify a few places where the ring buffer and the "snapshot" buffer are cleared as a side effect of an operation. This will avoid users lost of tracing data because of these so far undocumented behavior. Signed-off-by: Frank A. Cancio Bello <frank@generalsoftwareinc.com> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/20191218191553.q4lwyxmquvtjzjfz@frank-laptop Signed-off-by: Jonathan Corbet <corbet@lwn.net>