documentation: Fix control dependency and identical stores

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The summary of the "CONTROL DEPENDENCIES" section incorrectly states that
barrier() may be used to prevent compiler reordering when more than one
leg of the control-dependent "if" statement start with identical stores.
This is incorrect at high optimization levels.  This commit therefore
updates the summary to match the detailed description.

Reported by: Jianyu Zhan <nasa4836@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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Paul E. McKenney 2015-12-29 16:23:18 -08:00

parent 92e963f50f

commit 7817b799ed

1 changed files with 7 additions and 3 deletions

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Documentation/memory-barriers.txt

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