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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2010-02-23 04:04:48 +0300
committerIngo Molnar <mingo@elte.hu>2010-02-25 11:41:02 +0300
commit3120438ad68601f341e61e7cb1323b0e1a6ca367 (patch)
treeca8f9285ee2069cd2d3a49eda3f1150021e926b4 /include/linux/rculist_nulls.h
parent0632eb3d7563d6a76d49a3860b6352d800c92854 (diff)
downloadlinux-3120438ad68601f341e61e7cb1323b0e1a6ca367.tar.xz
rcu: Disable lockdep checking in RCU list-traversal primitives
The theory is that use of bare rcu_dereference() is more prone to error than use of the RCU list-traversal primitives. Therefore, disable lockdep RCU read-side critical-section checking in these primitives for the time being. Once all of the rcu_dereference() uses have been dealt with, it may be time to re-enable lockdep checking for the RCU list-traversal primitives. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: laijs@cn.fujitsu.com Cc: dipankar@in.ibm.com Cc: mathieu.desnoyers@polymtl.ca Cc: josh@joshtriplett.org Cc: dvhltc@us.ibm.com Cc: niv@us.ibm.com Cc: peterz@infradead.org Cc: rostedt@goodmis.org Cc: Valdis.Kletnieks@vt.edu Cc: dhowells@redhat.com LKML-Reference: <1266887105-1528-4-git-send-email-paulmck@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/rculist_nulls.h')
-rw-r--r--include/linux/rculist_nulls.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/rculist_nulls.h b/include/linux/rculist_nulls.h
index 589a40919f01..b70ffe53cb9f 100644
--- a/include/linux/rculist_nulls.h
+++ b/include/linux/rculist_nulls.h
@@ -101,10 +101,10 @@ static inline void hlist_nulls_add_head_rcu(struct hlist_nulls_node *n,
*
*/
#define hlist_nulls_for_each_entry_rcu(tpos, pos, head, member) \
- for (pos = rcu_dereference((head)->first); \
+ for (pos = rcu_dereference_raw((head)->first); \
(!is_a_nulls(pos)) && \
({ tpos = hlist_nulls_entry(pos, typeof(*tpos), member); 1; }); \
- pos = rcu_dereference(pos->next))
+ pos = rcu_dereference_raw(pos->next))
#endif
#endif