Attachment 690282 Details for Bug 905572 – Proposed fix

[patch] Proposed fix

rcu-fix.diff (text/plain), 1.04 KB, created by Steve Whitehouse on 2013-01-30 10:52:37 UTC

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Creator: Steve Whitehouse

Created: 2013-01-30 10:52:37 UTC

Size: 1.04 KB

patch

obsolete

>diff --git a/include/linux/list_bl.h b/include/linux/list_bl.h
>index 31f9d75..2eb8855 100644
>--- a/include/linux/list_bl.h
>+++ b/include/linux/list_bl.h
>@@ -125,6 +125,11 @@ static inline void hlist_bl_unlock(struct hlist_bl_head *b)
> 	__bit_spin_unlock(0, (unsigned long *)b);
> }
> 
>+static inline bool hlist_bl_is_locked(struct hlist_bl_head *b)
>+{
>+	return bit_spin_is_locked(0, (unsigned long *)b);
>+}
>+
> /**
>  * hlist_bl_for_each_entry	- iterate over list of given type
>  * @tpos:	the type * to use as a loop cursor.
>diff --git a/include/linux/rculist_bl.h b/include/linux/rculist_bl.h
>index cf1244f..4f216c5 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);
> }
> 
> /**

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Attachments on bug 905572: 690282