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| author | Florian Westphal <fw@strlen.de> | 2016-08-09 12:16:05 +0200 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2016-08-10 11:23:23 +0200 |
| commit | 02efdff7e209859c2755ebe93b3bd0e3d40123ab (patch) | |
| tree | d7008910ee8bc52787e18eda78733c31ea44ba39 /tools/perf/scripts/python | |
| parent | xfrm: state: use hlist_for_each_entry_rcu helper (diff) | |
| download | linux-02efdff7e209859c2755ebe93b3bd0e3d40123ab.tar.gz linux-02efdff7e209859c2755ebe93b3bd0e3d40123ab.zip | |
xfrm: state: use atomic_inc_not_zero to increment refcount
Once xfrm_state_lookup_byaddr no longer acquires the state lock another
cpu might be freeing the state entry at the same time.
To detect this we use atomic_inc_not_zero, we then signal -EAGAIN to
caller in case our result was stale.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions