srcu: Add comment explaining cookie overflow/wrap

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This commit adds to the poll_state_synchronize_srcu() header comment
describing the issues surrounding SRCU cookie overflow/wrap for the
different kernel configurations.

Link: https://lore.kernel.org/rcu/20201112201547.GF3365678@moria.home.lan/
Reported-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Paul E. McKenney 2020-11-15 20:33:38 -08:00

parent ee7f4a87a1

commit 4e7ccfae52

1 changed files with 15 additions and 0 deletions

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kernel/rcu/srcutree.c

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