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doc/RCU/listRCU: Update example function name 

listRCU.rst document gives an example with 'ipc_lock()', but the
function has dropped off by commit 82061c57ce ("ipc: drop
ipc_lock()").  Because the main logic of 'ipc_lock()' has melded in
'shm_lock()' by the commit, this commit updates the document to use
'shm_lock()' instead.

Reviewed-by: Madhuparna Bhowmik <madhuparnabhowmik04@gmail.com>
Signed-off-by: SeongJae Park <sjpark@amazon.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
SeongJae Park 2020-01-06 21:07:58 +01:00 committed by Paul E. McKenney
parent c50a871409
commit 3282b04692
1 changed files with 3 additions and 3 deletions
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Documentation/RCU/listRCU.rst
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@ -286,11 +286,11 @@ time the external state changes before Linux becomes aware of the change,
additional RCU-induced staleness is generally not a problem.
However, there are many examples where stale data cannot be tolerated.
One example in the Linux kernel is the System V IPC (see the ipc_lock()
function in ipc/util.c). This code checks a *deleted* flag under a
One example in the Linux kernel is the System V IPC (see the shm_lock()
function in ipc/shm.c). This code checks a *deleted* flag under a
per-entry spinlock, and, if the *deleted* flag is set, pretends that the
entry does not exist. For this to be helpful, the search function must
return holding the per-entry lock, as ipc_lock() does in fact do.
return holding the per-entry spinlock, as shm_lock() does in fact do.
.. _quick_quiz: