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| author | Jakub Kicinski <kuba@kernel.org> | 2023-03-15 10:37:34 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-03-15 10:37:34 +0300 |
| commit | 575942a2e2d311c7f5abe17f9958abab45604cbd (patch) | |
| tree | 0611835d7b618d97f31bdc1a592542c5352b636f /net/ipv4/fib_semantics.c | |
| parent | 68a84a127bb07d2a47e95c808520f742c54781c7 (diff) | |
| parent | c486640aa710ddd06c13a7f7162126e1552e8842 (diff) | |
| download | linux-575942a2e2d311c7f5abe17f9958abab45604cbd.tar.xz | |
Merge branch 'ipv6-optimize-rt6_score_route'
Eric Dumazet says:
====================
ipv6: optimize rt6_score_route()
This patch series remove an expensive rwlock acquisition
in rt6_check_neigh()/rt6_score_route().
First patch adds missing annotations, and second patch implements
the optimization.
====================
Link: https://lore.kernel.org/r/20230313201732.887488-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv4/fib_semantics.c')
| -rw-r--r-- | net/ipv4/fib_semantics.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index 3bb890a40ed7..574ff450c4d2 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -563,7 +563,7 @@ static int fib_detect_death(struct fib_info *fi, int order, n = NULL; if (n) { - state = n->nud_state; + state = READ_ONCE(n->nud_state); neigh_release(n); } else { return 0; @@ -2202,7 +2202,7 @@ static bool fib_good_nh(const struct fib_nh *nh) else n = NULL; if (n) - state = n->nud_state; + state = READ_ONCE(n->nud_state); rcu_read_unlock_bh(); } |