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| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-02-12 12:51:09 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-02-17 15:02:21 -0800 |
| commit | add1f0995454374d90c9d6b2c420d2fba3d0a4e3 (patch) | |
| tree | 8659ba52925b00f7843bb806f29c5cf4bae76348 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | rcu: Move SRCU grace period work to power efficient workqueue (diff) | |
| download | linux-dev-add1f0995454374d90c9d6b2c420d2fba3d0a4e3.tar.xz linux-dev-add1f0995454374d90c9d6b2c420d2fba3d0a4e3.zip | |
fs: Substitute rcu_access_pointer() for rcu_dereference_raw()
(Trivial patch.)
If the code is looking at the RCU-protected pointer itself, but not
dereferencing it, the rcu_dereference() functions can be downgraded to
rcu_access_pointer(). This commit makes this downgrade in __alloc_fd(),
which simply compares the RCU-protected pointer against NULL with no
dereferencing.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions