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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2011-12-21 22:48:08 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-12-21 22:48:08 +0100 |
| commit | c0ed1c14a72ca9ebacd51fb94a8aca488b0d361e (patch) | |
| tree | e689f7fd62e7633b9b254f9a456b65a1150c6e23 /net/core | |
| parent | ipv4: reintroduce route cache garbage collector (diff) | |
| download | linux-c0ed1c14a72ca9ebacd51fb94a8aca488b0d361e.tar.xz linux-c0ed1c14a72ca9ebacd51fb94a8aca488b0d361e.zip | |
net: Add a flow_cache_flush_deferred function
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>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/flow.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/core/flow.c b/net/core/flow.c index 8ae42de9c79e..e318c7e98042 100644 --- a/net/core/flow.c +++ b/net/core/flow.c @@ -358,6 +358,18 @@ void flow_cache_flush(void) put_online_cpus(); } +static void flow_cache_flush_task(struct work_struct *work) +{ + flow_cache_flush(); +} + +static DECLARE_WORK(flow_cache_flush_work, flow_cache_flush_task); + +void flow_cache_flush_deferred(void) +{ + schedule_work(&flow_cache_flush_work); +} + static int __cpuinit flow_cache_cpu_prepare(struct flow_cache *fc, int cpu) { struct flow_cache_percpu *fcp = per_cpu_ptr(fc->percpu, cpu); |