In recent weeks, two different network projects erroneously
strayed down the rw_lock path.  Update the Documentation
based upon comments by Eric Dumazet and Paul E. McKenney in
those threads.

Merged with editorial changes by Stephen Hemminger.

Signed-off-by: William.Allen.Simpson@gmail.com
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
  Documentation/spinlocks.txt |  186 ++++++++++++++++++++-----------------------
  1 files changed, 86 insertions(+), 100 deletions(-)