documentation: Subsequent writes ordered by rcu_dereference()

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The current memory-barriers.txt does not address the possibility of
a write to a dereferenced pointer.  This should be rare, but when it
happens, we need that write -not- to be clobbered by the initialization.
This commit therefore adds an example showing a data dependency ordering
a later data-dependent write.

Reported-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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Paul E. McKenney 2016-01-14 14:17:04 -08:00

parent 0e4bd2aba3

commit 92a84dd210

1 changed files with 24 additions and 0 deletions

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Documentation/memory-barriers.txt

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