Re: [PATCH] 2.5.39 list_head debugging

[Dave Jones <davej@codemonkey.org.uk>]

On Sun, Sep 29, 2002 at 01:58:52AM -0400, Zach Brown wrote:
 > +static inline struct list_head * __list_valid(struct list_head *list)
 > +{
 > +	BUG_ON(list == NULL);
 > +	BUG_ON(list->next == NULL);
 > +	BUG_ON(list->prev == NULL);
 > +	BUG_ON(list->next->prev != list);
 > +	BUG_ON(list->prev->next != list);
 > +	BUG_ON((list->next == list) && (list->prev != list));
 > +	BUG_ON((list->prev == list) && (list->next != list));
 > +
 > +	return list;
 > +}
 > +#else 
 > +
 > +#define __list_valid(args...)
 > +
 > +#endif

Two points (both related to return type).
1, why is it needed ? none of the macros seems to check it.
2, will this work for the #define __list_valid(args...) case ?


		Dave

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