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| author | Steven Whitehouse <swhiteho@redhat.com> | 2013-02-14 16:42:34 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-03-12 14:07:41 -0700 |
| commit | 49d0de082c31de34cc896c14eec5f1c2ade0415a (patch) | |
| tree | 29a1b907aa45ef5c158fbba3a820067a9b8e568e /include/linux/rculist_bl.h | |
| parent | 6f0a6ad2b55053879eee89f812f3527950c380d6 (diff) | |
| download | linux-49d0de082c31de34cc896c14eec5f1c2ade0415a.tar.gz linux-49d0de082c31de34cc896c14eec5f1c2ade0415a.tar.bz2 linux-49d0de082c31de34cc896c14eec5f1c2ade0415a.zip | |
rcu: Fix hlist_bl_set_first_rcu() annotation
Abhi noticed that we were getting a complaint from the RCU subsystem
about access of an RCU protected list under the write side bit lock.
This commit adds additional annotation to check both the RCU read
lock and the write side bit lock before printing a message.
Reported by: Abhijith Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Tested-by: Abhijith Das <adas@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'include/linux/rculist_bl.h')
| -rw-r--r-- | include/linux/rculist_bl.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/rculist_bl.h b/include/linux/rculist_bl.h index cf1244fbf3b6..4f216c59e7db 100644 --- a/include/linux/rculist_bl.h +++ b/include/linux/rculist_bl.h @@ -20,7 +20,7 @@ static inline void hlist_bl_set_first_rcu(struct hlist_bl_head *h, static inline struct hlist_bl_node *hlist_bl_first_rcu(struct hlist_bl_head *h) { return (struct hlist_bl_node *) - ((unsigned long)rcu_dereference(h->first) & ~LIST_BL_LOCKMASK); + ((unsigned long)rcu_dereference_check(h->first, hlist_bl_is_locked(h)) & ~LIST_BL_LOCKMASK); } /** |