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net: remove DST_NOCACHE flag

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DST_NOCACHE flag check has been removed from dst_release() and
dst_hold_safe() in a previous patch because all the dst are now ref
counted properly and can be released based on refcnt only.
Looking at the rest of the DST_NOCACHE use, all of them can now be
removed or replaced with other checks.
So this patch gets rid of all the DST_NOCACHE usage and remove this flag
completely.

Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wei Wang
2017-06-17 10:42:42 -07:00
committed by David S. Miller
parent b2a9c0ed75
commit a4c2fd7f78
8 changed files with 17 additions and 25 deletions
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2
include/net/ip6_fib.h
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@@ -170,7 +170,7 @@ static inline void rt6_update_expires(struct rt6_info *rt0, int timeout)
static inline u32 rt6_get_cookie(const struct rt6_info *rt)
{
if (rt->rt6i_flags & RTF_PCPU ||
(unlikely(rt->dst.flags & DST_NOCACHE) && rt->dst.from))
(unlikely(!list_empty(&rt->rt6i_uncached)) && rt->dst.from))
rt = (struct rt6_info *)(rt->dst.from);
return rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;