diff options
| author |   Julian Anastasov <ja@ssi.bg> | 2013-03-21 11:58:07 +0200 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2013-04-02 00:23:43 +0200 |
| commit | 363c97d7435ebba8a040f86e29bdec79ee182f0c (patch) | |
| tree | f472b8185419864ec9c1a95db2d88bbdb804fda7 /net/netfilter/ipvs/ip_vs_ftp.c | |
| parent | ipvs: optimize dst usage for real server (diff) | |
| download | linux-dev-363c97d7435ebba8a040f86e29bdec79ee182f0c.tar.xz linux-dev-363c97d7435ebba8a040f86e29bdec79ee182f0c.zip | |
ipvs: convert app locks
We use locks like tcp_app_lock, udp_app_lock,
sctp_app_lock to protect access to the protocol hash tables
from readers in packet context while the application
instances (inc) are [un]registered under global mutex.
As the hash tables are mostly read when conns are
created and bound to app, use RCU for readers and reclaim
app instance after grace period.
Simplify ip_vs_app_inc_get because we use usecnt
only for statistics and rely on module refcounting.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off by: Hans Schillstrom <hans@schillstrom.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'net/netfilter/ipvs/ip_vs_ftp.c')
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_ftp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/netfilter/ipvs/ip_vs_ftp.c b/net/netfilter/ipvs/ip_vs_ftp.c index 4f53a5f04437..7f90825ef1ce 100644 --- a/net/netfilter/ipvs/ip_vs_ftp.c +++ b/net/netfilter/ipvs/ip_vs_ftp.c @@ -480,6 +480,7 @@ static int __init ip_vs_ftp_init(void) int rv; rv = register_pernet_subsys(&ip_vs_ftp_ops); + /* rcu_barrier() is called by netns on error */ return rv; } @@ -489,6 +490,7 @@ static int __init ip_vs_ftp_init(void) static void __exit ip_vs_ftp_exit(void) { unregister_pernet_subsys(&ip_vs_ftp_ops); + /* rcu_barrier() is called by netns */ } |