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authorTrond Myklebust <Trond.Myklebust@netapp.com>2008-12-30 16:51:43 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2008-12-30 16:51:43 -0500
commit08cc36cbd1ee7d86422713bb21551eed1326b894 (patch)
tree52cc683387f903b34a7f6f798dcdbae385b58db8 /fs/lockd
parent3c92ec8ae91ecf59d88c798301833d7cf83f2179 (diff)
parent46f72f57d279688c4524df78edb5738db730eeef (diff)
Merge branch 'devel' into next
Diffstat (limited to 'fs/lockd')
-rw-r--r--fs/lockd/clntlock.c23
-rw-r--r--fs/lockd/host.c10
-rw-r--r--fs/lockd/svc.c6
3 files changed, 28 insertions, 11 deletions
diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c
index 8307dd64bf46..1f3b0fc0d351 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 e05d04416037..abdebf76b820 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 56b076736b56..252d80163d02 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