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| author | Stanislav Kinsbursky <skinsbursky@parallels.com> | 2012-07-25 16:56:19 +0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2012-07-27 16:48:43 -0400 |
| commit | caa4e76b6f284bab535a98fd37b9c46856158bcb (patch) | |
| tree | 8f627e46f3dce4257dd3fe261c53e1fd2d915673 /fs/lockd | |
| parent | 3cf7fb07e077e599d8343113cf4ef81adb2ca627 (diff) | |
| download | linux-caa4e76b6f284bab535a98fd37b9c46856158bcb.tar.gz linux-caa4e76b6f284bab535a98fd37b9c46856158bcb.tar.bz2 linux-caa4e76b6f284bab535a98fd37b9c46856158bcb.zip | |
LockD: manage used host count per networks namespace
This patch introduces moves nrhosts in per-net data.
It also adds kernel warning to nlm_shutdown_hosts_net() about remaining hosts
in specified network namespace context.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/lockd')
| -rw-r--r-- | fs/lockd/host.c | 18 | ||||
| -rw-r--r-- | fs/lockd/netns.h | 1 |
2 files changed, 19 insertions, 0 deletions
diff --git a/fs/lockd/host.c b/fs/lockd/host.c index 3636734fe2ba..6c56090ca531 100644 --- a/fs/lockd/host.c +++ b/fs/lockd/host.c @@ -173,6 +173,7 @@ out: static void nlm_destroy_host_locked(struct nlm_host *host) { struct rpc_clnt *clnt; + struct lockd_net *ln = net_generic(host->net, lockd_net_id); dprintk("lockd: destroy host %s\n", host->h_name); @@ -189,6 +190,7 @@ static void nlm_destroy_host_locked(struct nlm_host *host) rpc_shutdown_client(clnt); kfree(host); + ln->nrhosts--; nrhosts--; } @@ -229,6 +231,7 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, struct hlist_node *pos; struct nlm_host *host; struct nsm_handle *nsm = NULL; + struct lockd_net *ln = net_generic(net, lockd_net_id); dprintk("lockd: %s(host='%s', vers=%u, proto=%s)\n", __func__, (hostname ? hostname : "<none>"), version, @@ -263,6 +266,7 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, goto out; hlist_add_head(&host->h_hash, chain); + ln->nrhosts++; nrhosts++; dprintk("lockd: %s created host %s (%s)\n", __func__, @@ -384,6 +388,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, memcpy(nlm_srcaddr(host), src_sap, src_len); host->h_srcaddrlen = src_len; hlist_add_head(&host->h_hash, chain); + ln->nrhosts++; nrhosts++; dprintk("lockd: %s created host %s (%s)\n", @@ -592,6 +597,19 @@ nlm_shutdown_hosts_net(struct net *net) /* Then, perform a garbage collection pass */ nlm_gc_hosts(net); mutex_unlock(&nlm_host_mutex); + + /* complain if any hosts are left */ + if (net) { + struct lockd_net *ln = net_generic(net, lockd_net_id); + + printk(KERN_WARNING "lockd: couldn't shutdown host module for net %p!\n", net); + dprintk("lockd: %lu hosts left in net %p:\n", ln->nrhosts, net); + for_each_host(host, pos, chain, nlm_server_hosts) { + dprintk(" %s (cnt %d use %d exp %ld net %p)\n", + host->h_name, atomic_read(&host->h_count), + host->h_inuse, host->h_expires, host->net); + } + } } /* diff --git a/fs/lockd/netns.h b/fs/lockd/netns.h index 97c6c771133f..44c8f0b9230a 100644 --- a/fs/lockd/netns.h +++ b/fs/lockd/netns.h @@ -6,6 +6,7 @@ struct lockd_net { unsigned int nlmsvc_users; unsigned long next_gc; + unsigned long nrhosts; }; extern int lockd_net_id; |