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net: Add a flow_cache_flush_deferred function

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flow_cach_flush() might sleep but can be called from
atomic context via the xfrm garbage collector. So add
a flow_cache_flush_deferred() function and use this if
the xfrm garbage colector is invoked from within the
packet path.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steffen Klassert 2011-12-21 16:48:08 -05:00 • committed by David S. Miller
parent 9f28a2fc0b
commit c0ed1c14a7
3 changed files with 27 additions and 4 deletions
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include/net/flow.h
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@ -207,6 +207,7 @@ extern struct flow_cache_object *flow_cache_lookup(
u8 dir, flow_resolve_t resolver, void *ctx);
extern void flow_cache_flush(void);
extern void flow_cache_flush_deferred(void);
extern atomic_t flow_cache_genid;
#endif