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| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-08-19 21:43:09 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-08-20 09:00:18 -0700 |
| commit | 65e6bf484c497f02d47a0faae69ee398cd59cfda (patch) | |
| tree | 644a86b779a196da7c050cde9de593c413e0cc1e /drivers/vhost | |
| parent | rcu: apply TINY_PREEMPT_RCU read-side speedup to TREE_PREEMPT_RCU (diff) | |
| download | linux-dev-65e6bf484c497f02d47a0faae69ee398cd59cfda.tar.xz linux-dev-65e6bf484c497f02d47a0faae69ee398cd59cfda.zip | |
rcu: add comment stating that list_empty() applies to RCU-protected lists
Because list_empty() does not dereference any RCU-protected pointers, and
further does not pass such pointers to the caller (so that the caller
does not dereference them either), it is safe to use list_empty() on
RCU-protected lists. There is no need for a list_empty_rcu(). This
commit adds a comment stating this explicitly.
Requested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'drivers/vhost')
0 files changed, 0 insertions, 0 deletions