diff options
Diffstat (limited to 'fs/lockd')
| -rw-r--r-- | fs/lockd/clntlock.c | 23 | ||||
| -rw-r--r-- | fs/lockd/host.c | 10 | ||||
| -rw-r--r-- | fs/lockd/svc.c | 6 |
3 files changed, 28 insertions, 11 deletions
diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c index 8307dd6..1f3b0fc 100644 --- a/fs/lockd/clntlock.c +++ b/fs/lockd/clntlock.c @@ -14,6 +14,7 @@ #include <linux/sunrpc/svc.h> #include <linux/lockd/lockd.h> #include <linux/smp_lock.h> +#include <linux/kthread.h> #define NLMDBG_FACILITY NLMDBG_CLIENT @@ -60,7 +61,7 @@ struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init) host = nlmclnt_lookup_host(nlm_init->address, nlm_init->addrlen, nlm_init->protocol, nlm_version, - nlm_init->hostname); + nlm_init->hostname, nlm_init->noresvport); if (host == NULL) { lockd_down(); return ERR_PTR(-ENOLCK); @@ -191,11 +192,15 @@ __be32 nlmclnt_grant(const struct sockaddr *addr, const struct nlm_lock *lock) void nlmclnt_recovery(struct nlm_host *host) { + struct task_struct *task; + if (!host->h_reclaiming++) { nlm_get_host(host); - __module_get(THIS_MODULE); - if (kernel_thread(reclaimer, host, CLONE_FS | CLONE_FILES) < 0) - module_put(THIS_MODULE); + task = kthread_run(reclaimer, host, "%s-reclaim", host->h_name); + if (IS_ERR(task)) + printk(KERN_ERR "lockd: unable to spawn reclaimer " + "thread. Locks for %s won't be reclaimed! " + "(%ld)\n", host->h_name, PTR_ERR(task)); } } @@ -207,7 +212,6 @@ reclaimer(void *ptr) struct file_lock *fl, *next; u32 nsmstate; - daemonize("%s-reclaim", host->h_name); allow_signal(SIGKILL); down_write(&host->h_rwsem); @@ -233,7 +237,12 @@ restart: list_for_each_entry_safe(fl, next, &host->h_reclaim, fl_u.nfs_fl.list) { list_del_init(&fl->fl_u.nfs_fl.list); - /* Why are we leaking memory here? --okir */ + /* + * sending this thread a SIGKILL will result in any unreclaimed + * locks being removed from the h_granted list. This means that + * the kernel will not attempt to reclaim them again if a new + * reclaimer thread is spawned for this host. + */ if (signalled()) continue; if (nlmclnt_reclaim(host, fl) != 0) @@ -261,5 +270,5 @@ restart: nlm_release_host(host); lockd_down(); unlock_kernel(); - module_put_and_exit(0); + return 0; } diff --git a/fs/lockd/host.c b/fs/lockd/host.c index e05d044..abdebf7 100644 --- a/fs/lockd/host.c +++ b/fs/lockd/host.c @@ -48,6 +48,7 @@ struct nlm_lookup_host_info { const size_t hostname_len; /* it's length */ const struct sockaddr *src_sap; /* our address (optional) */ const size_t src_len; /* it's length */ + const int noresvport; /* use non-priv port */ }; /* @@ -222,6 +223,7 @@ static struct nlm_host *nlm_lookup_host(struct nlm_lookup_host_info *ni) host->h_nsmstate = 0; /* real NSM state */ host->h_nsmhandle = nsm; host->h_server = ni->server; + host->h_noresvport = ni->noresvport; hlist_add_head(&host->h_hash, chain); INIT_LIST_HEAD(&host->h_lockowners); spin_lock_init(&host->h_lock); @@ -272,6 +274,7 @@ nlm_destroy_host(struct nlm_host *host) * @protocol: transport protocol to use * @version: NLM protocol version * @hostname: '\0'-terminated hostname of server + * @noresvport: 1 if non-privileged port should be used * * Returns an nlm_host structure that matches the passed-in * [server address, transport protocol, NLM version, server hostname]. @@ -281,7 +284,9 @@ nlm_destroy_host(struct nlm_host *host) struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, const size_t salen, const unsigned short protocol, - const u32 version, const char *hostname) + const u32 version, + const char *hostname, + int noresvport) { const struct sockaddr source = { .sa_family = AF_UNSPEC, @@ -296,6 +301,7 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, .hostname_len = strlen(hostname), .src_sap = &source, .src_len = sizeof(source), + .noresvport = noresvport, }; dprintk("lockd: %s(host='%s', vers=%u, proto=%s)\n", __func__, @@ -417,6 +423,8 @@ nlm_bind_host(struct nlm_host *host) */ if (!host->h_server) args.flags |= RPC_CLNT_CREATE_HARDRTRY; + if (host->h_noresvport) + args.flags |= RPC_CLNT_CREATE_NONPRIVPORT; clnt = rpc_create(&args); if (!IS_ERR(clnt)) diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index 56b0767..252d801 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -45,7 +45,7 @@ static struct svc_program nlmsvc_program; struct nlmsvc_binding * nlmsvc_ops; -EXPORT_SYMBOL(nlmsvc_ops); +EXPORT_SYMBOL_GPL(nlmsvc_ops); static DEFINE_MUTEX(nlmsvc_mutex); static unsigned int nlmsvc_users; @@ -300,7 +300,7 @@ out: mutex_unlock(&nlmsvc_mutex); return error; } -EXPORT_SYMBOL(lockd_up); +EXPORT_SYMBOL_GPL(lockd_up); /* * Decrement the user count and bring down lockd if we're the last. @@ -329,7 +329,7 @@ lockd_down(void) out: mutex_unlock(&nlmsvc_mutex); } -EXPORT_SYMBOL(lockd_down); +EXPORT_SYMBOL_GPL(lockd_down); #ifdef CONFIG_SYSCTL |