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-rw-r--r--fs/lockd/clnt4xdr.c8
-rw-r--r--fs/lockd/clntproc.c17
-rw-r--r--fs/lockd/clntxdr.c10
-rw-r--r--fs/lockd/grace.c16
-rw-r--r--fs/lockd/host.c107
-rw-r--r--fs/lockd/mon.c94
-rw-r--r--fs/lockd/netns.h11
-rw-r--r--fs/lockd/svc.c61
-rw-r--r--fs/lockd/svc4proc.c14
-rw-r--r--fs/lockd/svclock.c20
-rw-r--r--fs/lockd/svcproc.c19
-rw-r--r--fs/lockd/svcsubs.c19
12 files changed, 243 insertions, 153 deletions
diff --git a/fs/lockd/clnt4xdr.c b/fs/lockd/clnt4xdr.c
index 13ad1539fbf..00ec0b9c94d 100644
--- a/fs/lockd/clnt4xdr.c
+++ b/fs/lockd/clnt4xdr.c
@@ -64,10 +64,6 @@ static void nlm4_compute_offsets(const struct nlm_lock *lock,
{
const struct file_lock *fl = &lock->fl;
- BUG_ON(fl->fl_start > NLM4_OFFSET_MAX);
- BUG_ON(fl->fl_end > NLM4_OFFSET_MAX &&
- fl->fl_end != OFFSET_MAX);
-
*l_offset = loff_t_to_s64(fl->fl_start);
if (fl->fl_end == OFFSET_MAX)
*l_len = 0;
@@ -122,7 +118,6 @@ static void encode_netobj(struct xdr_stream *xdr,
{
__be32 *p;
- BUG_ON(length > XDR_MAX_NETOBJ);
p = xdr_reserve_space(xdr, 4 + length);
xdr_encode_opaque(p, data, length);
}
@@ -156,7 +151,6 @@ out_overflow:
static void encode_cookie(struct xdr_stream *xdr,
const struct nlm_cookie *cookie)
{
- BUG_ON(cookie->len > NLM_MAXCOOKIELEN);
encode_netobj(xdr, (u8 *)&cookie->data, cookie->len);
}
@@ -198,7 +192,6 @@ out_overflow:
*/
static void encode_fh(struct xdr_stream *xdr, const struct nfs_fh *fh)
{
- BUG_ON(fh->size > NFS3_FHSIZE);
encode_netobj(xdr, (u8 *)&fh->data, fh->size);
}
@@ -336,7 +329,6 @@ static void encode_caller_name(struct xdr_stream *xdr, const char *name)
u32 length = strlen(name);
__be32 *p;
- BUG_ON(length > NLM_MAXSTRLEN);
p = xdr_reserve_space(xdr, 4 + length);
xdr_encode_opaque(p, name, length);
}
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index 8392cb85bd5..54f9e6ce043 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -141,7 +141,7 @@ static void nlmclnt_setlockargs(struct nlm_rqst *req, struct file_lock *fl)
static void nlmclnt_release_lockargs(struct nlm_rqst *req)
{
- BUG_ON(req->a_args.lock.fl.fl_ops != NULL);
+ WARN_ON_ONCE(req->a_args.lock.fl.fl_ops != NULL);
}
/**
@@ -156,12 +156,16 @@ int nlmclnt_proc(struct nlm_host *host, int cmd, struct file_lock *fl)
struct nlm_rqst *call;
int status;
- nlm_get_host(host);
call = nlm_alloc_call(host);
if (call == NULL)
return -ENOMEM;
nlmclnt_locks_init_private(fl, host);
+ if (!fl->fl_u.nfs_fl.owner) {
+ /* lockowner allocation has failed */
+ nlmclnt_release_call(call);
+ return -ENOMEM;
+ }
/* Set up the argument struct */
nlmclnt_setlockargs(call, fl);
@@ -185,9 +189,6 @@ EXPORT_SYMBOL_GPL(nlmclnt_proc);
/*
* Allocate an NLM RPC call struct
- *
- * Note: the caller must hold a reference to host. In case of failure,
- * this reference will be released.
*/
struct nlm_rqst *nlm_alloc_call(struct nlm_host *host)
{
@@ -199,7 +200,7 @@ struct nlm_rqst *nlm_alloc_call(struct nlm_host *host)
atomic_set(&call->a_count, 1);
locks_init_lock(&call->a_args.lock.fl);
locks_init_lock(&call->a_res.lock.fl);
- call->a_host = host;
+ call->a_host = nlm_get_host(host);
return call;
}
if (signalled())
@@ -207,7 +208,6 @@ struct nlm_rqst *nlm_alloc_call(struct nlm_host *host)
printk("nlm_alloc_call: failed, waiting for memory\n");
schedule_timeout_interruptible(5*HZ);
}
- nlmclnt_release_host(host);
return NULL;
}
@@ -465,7 +465,6 @@ static const struct file_lock_operations nlmclnt_lock_ops = {
static void nlmclnt_locks_init_private(struct file_lock *fl, struct nlm_host *host)
{
- BUG_ON(fl->fl_ops != NULL);
fl->fl_u.nfs_fl.state = 0;
fl->fl_u.nfs_fl.owner = nlm_find_lockowner(host, fl->fl_owner);
INIT_LIST_HEAD(&fl->fl_u.nfs_fl.list);
@@ -750,7 +749,7 @@ static int nlmclnt_cancel(struct nlm_host *host, int block, struct file_lock *fl
dprintk("lockd: blocking lock attempt was interrupted by a signal.\n"
" Attempting to cancel lock.\n");
- req = nlm_alloc_call(nlm_get_host(host));
+ req = nlm_alloc_call(host);
if (!req)
return -ENOMEM;
req->a_flags = RPC_TASK_ASYNC;
diff --git a/fs/lockd/clntxdr.c b/fs/lockd/clntxdr.c
index d269ada7670..9a55797a1cd 100644
--- a/fs/lockd/clntxdr.c
+++ b/fs/lockd/clntxdr.c
@@ -60,10 +60,6 @@ static void nlm_compute_offsets(const struct nlm_lock *lock,
{
const struct file_lock *fl = &lock->fl;
- BUG_ON(fl->fl_start > NLM_OFFSET_MAX);
- BUG_ON(fl->fl_end > NLM_OFFSET_MAX &&
- fl->fl_end != OFFSET_MAX);
-
*l_offset = loff_t_to_s32(fl->fl_start);
if (fl->fl_end == OFFSET_MAX)
*l_len = 0;
@@ -119,7 +115,6 @@ static void encode_netobj(struct xdr_stream *xdr,
{
__be32 *p;
- BUG_ON(length > XDR_MAX_NETOBJ);
p = xdr_reserve_space(xdr, 4 + length);
xdr_encode_opaque(p, data, length);
}
@@ -153,7 +148,6 @@ out_overflow:
static void encode_cookie(struct xdr_stream *xdr,
const struct nlm_cookie *cookie)
{
- BUG_ON(cookie->len > NLM_MAXCOOKIELEN);
encode_netobj(xdr, (u8 *)&cookie->data, cookie->len);
}
@@ -195,7 +189,6 @@ out_overflow:
*/
static void encode_fh(struct xdr_stream *xdr, const struct nfs_fh *fh)
{
- BUG_ON(fh->size != NFS2_FHSIZE);
encode_netobj(xdr, (u8 *)&fh->data, NFS2_FHSIZE);
}
@@ -223,7 +216,7 @@ static void encode_nlm_stat(struct xdr_stream *xdr,
{
__be32 *p;
- BUG_ON(be32_to_cpu(stat) > NLM_LCK_DENIED_GRACE_PERIOD);
+ WARN_ON_ONCE(be32_to_cpu(stat) > NLM_LCK_DENIED_GRACE_PERIOD);
p = xdr_reserve_space(xdr, 4);
*p = stat;
}
@@ -330,7 +323,6 @@ static void encode_caller_name(struct xdr_stream *xdr, const char *name)
u32 length = strlen(name);
__be32 *p;
- BUG_ON(length > NLM_MAXSTRLEN);
p = xdr_reserve_space(xdr, 4 + length);
xdr_encode_opaque(p, name, length);
}
diff --git a/fs/lockd/grace.c b/fs/lockd/grace.c
index 183cc1f0af1..6d1ee7204c8 100644
--- a/fs/lockd/grace.c
+++ b/fs/lockd/grace.c
@@ -4,8 +4,10 @@
#include <linux/module.h>
#include <linux/lockd/bind.h>
+#include <net/net_namespace.h>
+
+#include "netns.h"
-static LIST_HEAD(grace_list);
static DEFINE_SPINLOCK(grace_lock);
/**
@@ -19,10 +21,12 @@ static DEFINE_SPINLOCK(grace_lock);
*
* This function is called to start a grace period.
*/
-void locks_start_grace(struct lock_manager *lm)
+void locks_start_grace(struct net *net, struct lock_manager *lm)
{
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
spin_lock(&grace_lock);
- list_add(&lm->list, &grace_list);
+ list_add(&lm->list, &ln->grace_list);
spin_unlock(&grace_lock);
}
EXPORT_SYMBOL_GPL(locks_start_grace);
@@ -52,8 +56,10 @@ EXPORT_SYMBOL_GPL(locks_end_grace);
* to answer ordinary lock requests, and when they should accept only
* lock reclaims.
*/
-int locks_in_grace(void)
+int locks_in_grace(struct net *net)
{
- return !list_empty(&grace_list);
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ return !list_empty(&ln->grace_list);
}
EXPORT_SYMBOL_GPL(locks_in_grace);
diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index eb75ca7c2d6..0e17090c310 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -21,6 +21,8 @@
#include <net/ipv6.h>
+#include "netns.h"
+
#define NLMDBG_FACILITY NLMDBG_HOSTCACHE
#define NLM_HOST_NRHASH 32
#define NLM_HOST_REBIND (60 * HZ)
@@ -41,11 +43,10 @@ static struct hlist_head nlm_client_hosts[NLM_HOST_NRHASH];
hlist_for_each_entry_safe((host), (pos), (next), \
(chain), h_hash)
-static unsigned long next_gc;
static unsigned long nrhosts;
static DEFINE_MUTEX(nlm_host_mutex);
-static void nlm_gc_hosts(void);
+static void nlm_gc_hosts(struct net *net);
struct nlm_lookup_host_info {
const int server; /* search for server|client */
@@ -172,12 +173,10 @@ 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);
- BUG_ON(!list_empty(&host->h_lockowners));
- BUG_ON(atomic_read(&host->h_count));
-
hlist_del_init(&host->h_hash);
nsm_unmonitor(host);
@@ -188,6 +187,7 @@ static void nlm_destroy_host_locked(struct nlm_host *host)
rpc_shutdown_client(clnt);
kfree(host);
+ ln->nrhosts--;
nrhosts--;
}
@@ -228,6 +228,7 @@ 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,
@@ -262,6 +263,7 @@ 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__,
@@ -284,13 +286,12 @@ void nlmclnt_release_host(struct nlm_host *host)
dprintk("lockd: release client host %s\n", host->h_name);
- BUG_ON(atomic_read(&host->h_count) < 0);
- BUG_ON(host->h_server);
+ WARN_ON_ONCE(host->h_server);
if (atomic_dec_and_test(&host->h_count)) {
- BUG_ON(!list_empty(&host->h_lockowners));
- BUG_ON(!list_empty(&host->h_granted));
- BUG_ON(!list_empty(&host->h_reclaim));
+ WARN_ON_ONCE(!list_empty(&host->h_lockowners));
+ WARN_ON_ONCE(!list_empty(&host->h_granted));
+ WARN_ON_ONCE(!list_empty(&host->h_reclaim));
mutex_lock(&nlm_host_mutex);
nlm_destroy_host_locked(host);
@@ -326,7 +327,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
struct nsm_handle *nsm = NULL;
struct sockaddr *src_sap = svc_daddr(rqstp);
size_t src_len = rqstp->rq_daddrlen;
- struct net *net = rqstp->rq_xprt->xpt_net;
+ struct net *net = SVC_NET(rqstp);
struct nlm_lookup_host_info ni = {
.server = 1,
.sap = svc_addr(rqstp),
@@ -337,6 +338,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
.hostname_len = hostname_len,
.net = net,
};
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
dprintk("lockd: %s(host='%*s', vers=%u, proto=%s)\n", __func__,
(int)hostname_len, hostname, rqstp->rq_vers,
@@ -344,8 +346,8 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
mutex_lock(&nlm_host_mutex);
- if (time_after_eq(jiffies, next_gc))
- nlm_gc_hosts();
+ if (time_after_eq(jiffies, ln->next_gc))
+ nlm_gc_hosts(net);
chain = &nlm_server_hosts[nlm_hash_address(ni.sap)];
hlist_for_each_entry(host, pos, chain, h_hash) {
@@ -382,6 +384,7 @@ 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",
@@ -405,8 +408,7 @@ void nlmsvc_release_host(struct nlm_host *host)
dprintk("lockd: release server host %s\n", host->h_name);
- BUG_ON(atomic_read(&host->h_count) < 0);
- BUG_ON(!host->h_server);
+ WARN_ON_ONCE(!host->h_server);
atomic_dec(&host->h_count);
}
@@ -565,6 +567,35 @@ void nlm_host_rebooted(const struct nlm_reboot *info)
nsm_release(nsm);
}
+static void nlm_complain_hosts(struct net *net)
+{
+ struct hlist_head *chain;
+ struct hlist_node *pos;
+ struct nlm_host *host;
+
+ if (net) {
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ if (ln->nrhosts == 0)
+ return;
+ 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);
+ } else {
+ if (nrhosts == 0)
+ return;
+ printk(KERN_WARNING "lockd: couldn't shutdown host module!\n");
+ dprintk("lockd: %lu hosts left:\n", nrhosts);
+ }
+
+ for_each_host(host, pos, chain, nlm_server_hosts) {
+ if (net && host->net != net)
+ continue;
+ 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);
+ }
+}
+
void
nlm_shutdown_hosts_net(struct net *net)
{
@@ -572,11 +603,10 @@ nlm_shutdown_hosts_net(struct net *net)
struct hlist_node *pos;
struct nlm_host *host;
- dprintk("lockd: shutting down host module\n");
mutex_lock(&nlm_host_mutex);
/* First, make all hosts eligible for gc */
- dprintk("lockd: nuking all hosts...\n");
+ dprintk("lockd: nuking all hosts in net %p...\n", net);
for_each_host(host, pos, chain, nlm_server_hosts) {
if (net && host->net != net)
continue;
@@ -588,8 +618,10 @@ nlm_shutdown_hosts_net(struct net *net)
}
/* Then, perform a garbage collection pass */
- nlm_gc_hosts();
+ nlm_gc_hosts(net);
mutex_unlock(&nlm_host_mutex);
+
+ nlm_complain_hosts(net);
}
/*
@@ -599,22 +631,8 @@ nlm_shutdown_hosts_net(struct net *net)
void
nlm_shutdown_hosts(void)
{
- struct hlist_head *chain;
- struct hlist_node *pos;
- struct nlm_host *host;
-
+ dprintk("lockd: shutting down host module\n");
nlm_shutdown_hosts_net(NULL);
-
- /* complain if any hosts are left */
- if (nrhosts != 0) {
- printk(KERN_WARNING "lockd: couldn't shutdown host module!\n");
- dprintk("lockd: %lu hosts left:\n", nrhosts);
- 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);
- }
- }
}
/*
@@ -623,30 +641,39 @@ nlm_shutdown_hosts(void)
* mark & sweep for resources held by remote clients.
*/
static void
-nlm_gc_hosts(void)
+nlm_gc_hosts(struct net *net)
{
struct hlist_head *chain;
struct hlist_node *pos, *next;
struct nlm_host *host;
- dprintk("lockd: host garbage collection\n");
- for_each_host(host, pos, chain, nlm_server_hosts)
+ dprintk("lockd: host garbage collection for net %p\n", net);
+ for_each_host(host, pos, chain, nlm_server_hosts) {
+ if (net && host->net != net)
+ continue;
host->h_inuse = 0;
+ }
/* Mark all hosts that hold locks, blocks or shares */
- nlmsvc_mark_resources();
+ nlmsvc_mark_resources(net);
for_each_host_safe(host, pos, next, chain, nlm_server_hosts) {
+ if (net && host->net != net)
+ continue;
if (atomic_read(&host->h_count) || host->h_inuse
|| time_before(jiffies, host->h_expires)) {
dprintk("nlm_gc_hosts skipping %s "
- "(cnt %d use %d exp %ld)\n",
+ "(cnt %d use %d exp %ld net %p)\n",
host->h_name, atomic_read(&host->h_count),
- host->h_inuse, host->h_expires);
+ host->h_inuse, host->h_expires, host->net);
continue;
}
nlm_destroy_host_locked(host);
}
- next_gc = jiffies + NLM_HOST_COLLECT;
+ if (net) {
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ ln->next_gc = jiffies + NLM_HOST_COLLECT;
+ }
}
diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
index 7ef14b3c5be..3c2cfc68363 100644
--- a/fs/lockd/mon.c
+++ b/fs/lockd/mon.c
@@ -7,7 +7,6 @@
*/
#include <linux/types.h>
-#include <linux/utsname.h>
#include <linux/kernel.h>
#include <linux/ktime.h>
#include <linux/slab.h>
@@ -19,6 +18,8 @@
#include <asm/unaligned.h>
+#include "netns.h"
+
#define NLMDBG_FACILITY NLMDBG_MONITOR
#define NSM_PROGRAM 100024
#define NSM_VERSION 1
@@ -40,6 +41,7 @@ struct nsm_args {
u32 proc;
char *mon_name;
+ char *nodename;
};
struct nsm_res {
@@ -70,7 +72,7 @@ static struct rpc_clnt *nsm_create(struct net *net)
};
struct rpc_create_args args = {
.net = net,
- .protocol = XPRT_TRANSPORT_UDP,
+ .protocol = XPRT_TRANSPORT_TCP,
.address = (struct sockaddr *)&sin,
.addrsize = sizeof(sin),
.servername = "rpc.statd",
@@ -83,10 +85,61 @@ static struct rpc_clnt *nsm_create(struct net *net)
return rpc_create(&args);
}
+static struct rpc_clnt *nsm_client_set(struct lockd_net *ln,
+ struct rpc_clnt *clnt)
+{
+ spin_lock(&ln->nsm_clnt_lock);
+ if (ln->nsm_users == 0) {
+ if (clnt == NULL)
+ goto out;
+ ln->nsm_clnt = clnt;
+ }
+ clnt = ln->nsm_clnt;
+ ln->nsm_users++;
+out:
+ spin_unlock(&ln->nsm_clnt_lock);
+ return clnt;
+}
+
+static struct rpc_clnt *nsm_client_get(struct net *net)
+{
+ struct rpc_clnt *clnt, *new;
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ clnt = nsm_client_set(ln, NULL);
+ if (clnt != NULL)
+ goto out;
+
+ clnt = new = nsm_create(net);
+ if (IS_ERR(clnt))
+ goto out;
+
+ clnt = nsm_client_set(ln, new);
+ if (clnt != new)
+ rpc_shutdown_client(new);
+out:
+ return clnt;
+}
+
+static void nsm_client_put(struct net *net)
+{
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+ struct rpc_clnt *clnt = NULL;
+
+ spin_lock(&ln->nsm_clnt_lock);
+ ln->nsm_users--;
+ if (ln->nsm_users == 0) {
+ clnt = ln->nsm_clnt;
+ ln->nsm_clnt = NULL;
+ }
+ spin_unlock(&ln->nsm_clnt_lock);
+ if (clnt != NULL)
+ rpc_shutdown_client(clnt);
+}
+
static int nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res,
- struct net *net)
+ struct rpc_clnt *clnt)
{
- struct rpc_clnt *clnt;
int status;
struct nsm_args args = {
.priv = &nsm->sm_priv,
@@ -94,31 +147,22 @@ static int nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res,
.vers = 3,
.proc = NLMPROC_NSM_NOTIFY,
.mon_name = nsm->sm_mon_name,
+ .nodename = clnt->cl_nodename,
};
struct rpc_message msg = {
.rpc_argp = &args,
.rpc_resp = res,
};
- clnt = nsm_create(net);
- if (IS_ERR(clnt)) {
- status = PTR_ERR(clnt);
- dprintk("lockd: failed to create NSM upcall transport, "
- "status=%d\n", status);
- goto out;
- }
-
memset(res, 0, sizeof(*res));
msg.rpc_proc = &clnt->cl_procinfo[proc];
- status = rpc_call_sync(clnt, &msg, 0);
+ status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFTCONN);
if (status < 0)
dprintk("lockd: NSM upcall RPC failed, status=%d\n",
status);
else
status = 0;
- rpc_shutdown_client(clnt);
- out:
return status;
}
@@ -138,6 +182,7 @@ int nsm_monitor(const struct nlm_host *host)
struct nsm_handle *nsm = host->h_nsmhandle;
struct nsm_res res;
int status;
+ struct rpc_clnt *clnt;
dprintk("lockd: nsm_monitor(%s)\n", nsm->sm_name);
@@ -150,7 +195,15 @@ int nsm_monitor(const struct nlm_host *host)
*/
nsm->sm_mon_name = nsm_use_hostnames ? nsm->sm_name : nsm->sm_addrbuf;
- status = nsm_mon_unmon(nsm, NSMPROC_MON, &res, host->net);
+ clnt = nsm_client_get(host->net);
+ if (IS_ERR(clnt)) {
+ status = PTR_ERR(clnt);
+ dprintk("lockd: failed to create NSM upcall transport, "
+ "status=%d, net=%p\n", status, host->net);
+ return status;
+ }
+
+ status = nsm_mon_unmon(nsm, NSMPROC_MON, &res, clnt);
if (unlikely(res.status != 0))
status = -EIO;
if (unlikely(status < 0)) {
@@ -182,9 +235,11 @@ void nsm_unmonitor(const struct nlm_host *host)
if (atomic_read(&nsm->sm_count) == 1
&& nsm->sm_monitored && !nsm->sm_sticky) {
+ struct lockd_net *ln = net_generic(host->net, lockd_net_id);
+
dprintk("lockd: nsm_unmonitor(%s)\n", nsm->sm_name);
- status = nsm_mon_unmon(nsm, NSMPROC_UNMON, &res, host->net);
+ status = nsm_mon_unmon(nsm, NSMPROC_UNMON, &res, ln->nsm_clnt);
if (res.status != 0)
status = -EIO;
if (status < 0)
@@ -192,6 +247,8 @@ void nsm_unmonitor(const struct nlm_host *host)
nsm->sm_name);
else
nsm->sm_monitored = 0;
+
+ nsm_client_put(host->net);
}
}
@@ -407,7 +464,6 @@ static void encode_nsm_string(struct xdr_stream *xdr, const char *string)
const u32 len = strlen(string);
__be32 *p;
- BUG_ON(len > SM_MAXSTRLEN);
p = xdr_reserve_space(xdr, 4 + len);
xdr_encode_opaque(p, string, len);
}
@@ -430,7 +486,7 @@ static void encode_my_id(struct xdr_stream *xdr, const struct nsm_args *argp)
{
__be32 *p;
- encode_nsm_string(xdr, utsname()->nodename);
+ encode_nsm_string(xdr, argp->nodename);
p = xdr_reserve_space(xdr, 4 + 4 + 4);
*p++ = cpu_to_be32(argp->prog);
*p++ = cpu_to_be32(argp->vers);
diff --git a/fs/lockd/netns.h b/fs/lockd/netns.h
index ce227e0fbc5..5010b55628b 100644
--- a/fs/lockd/netns.h
+++ b/fs/lockd/netns.h
@@ -1,10 +1,21 @@
#ifndef __LOCKD_NETNS_H__
#define __LOCKD_NETNS_H__
+#include <linux/fs.h>
#include <net/netns/generic.h>
struct lockd_net {
unsigned int nlmsvc_users;
+ unsigned long next_gc;
+ unsigned long nrhosts;
+
+ struct delayed_work grace_period_end;
+ struct lock_manager lockd_manager;
+ struct list_head grace_list;
+
+ spinlock_t nsm_clnt_lock;
+ unsigned int nsm_users;
+ struct rpc_clnt *nsm_clnt;
};
extern int lockd_net_id;
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 80938fda67e..a2aa97d4567 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -87,32 +87,36 @@ static unsigned long get_lockd_grace_period(void)
return nlm_timeout * 5 * HZ;
}
-static struct lock_manager lockd_manager = {
-};
-
-static void grace_ender(struct work_struct *not_used)
+static void grace_ender(struct work_struct *grace)
{
- locks_end_grace(&lockd_manager);
-}
+ struct delayed_work *dwork = container_of(grace, struct delayed_work,
+ work);
+ struct lockd_net *ln = container_of(dwork, struct lockd_net,
+ grace_period_end);
-static DECLARE_DELAYED_WORK(grace_period_end, grace_ender);
+ locks_end_grace(&ln->lockd_manager);
+}
-static void set_grace_period(void)
+static void set_grace_period(struct net *net)
{
unsigned long grace_period = get_lockd_grace_period();
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
- locks_start_grace(&lockd_manager);
- cancel_delayed_work_sync(&grace_period_end);
- schedule_delayed_work(&grace_period_end, grace_period);
+ locks_start_grace(net, &ln->lockd_manager);
+ cancel_delayed_work_sync(&ln->grace_period_end);
+ schedule_delayed_work(&ln->grace_period_end, grace_period);
}
static void restart_grace(void)
{
if (nlmsvc_ops) {
- cancel_delayed_work_sync(&grace_period_end);
- locks_end_grace(&lockd_manager);
+ struct net *net = &init_net;
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ cancel_delayed_work_sync(&ln->grace_period_end);
+ locks_end_grace(&ln->lockd_manager);
nlmsvc_invalidate_all();
- set_grace_period();
+ set_grace_period(net);
}
}
@@ -122,7 +126,7 @@ static void restart_grace(void)
static int
lockd(void *vrqstp)
{
- int err = 0, preverr = 0;
+ int err = 0;
struct svc_rqst *rqstp = vrqstp;
/* try_to_freeze() is called from svc_recv() */
@@ -137,8 +141,6 @@ lockd(void *vrqstp)
nlm_timeout = LOCKD_DFLT_TIMEO;
nlmsvc_timeout = nlm_timeout * HZ;
- set_grace_period();
-
/*
* The main request loop. We don't terminate until the last
* NFS mount or NFS daemon has gone away.
@@ -163,29 +165,14 @@ lockd(void *vrqstp)
* recvfrom routine.
*/
err = svc_recv(rqstp, timeout);
- if (err == -EAGAIN || err == -EINTR) {
- preverr = err;
+ if (err == -EAGAIN || err == -EINTR)
continue;
- }
- if (err < 0) {
- if (err != preverr) {
- printk(KERN_WARNING "%s: unexpected error "
- "from svc_recv (%d)\n", __func__, err);
- preverr = err;
- }
- schedule_timeout_interruptible(HZ);
- continue;
- }
- preverr = err;
-
dprintk("lockd: request from %s\n",
svc_print_addr(rqstp, buf, sizeof(buf)));
svc_process(rqstp);
}
flush_signals(current);
- cancel_delayed_work_sync(&grace_period_end);
- locks_end_grace(&lockd_manager);
if (nlmsvc_ops)
nlmsvc_invalidate_all();
nlm_shutdown_hosts();
@@ -266,6 +253,7 @@ static int lockd_up_net(struct svc_serv *serv, struct net *net)
error = make_socks(serv, net);
if (error < 0)
goto err_socks;
+ set_grace_period(net);
dprintk("lockd_up_net: per-net data created; net=%p\n", net);
return 0;
@@ -283,6 +271,8 @@ static void lockd_down_net(struct svc_serv *serv, struct net *net)
if (ln->nlmsvc_users) {
if (--ln->nlmsvc_users == 0) {
nlm_shutdown_hosts_net(net);
+ cancel_delayed_work_sync(&ln->grace_period_end);
+ locks_end_grace(&ln->lockd_manager);
svc_shutdown_net(serv, net);
dprintk("lockd_down_net: per-net data destroyed; net=%p\n", net);
}
@@ -589,6 +579,11 @@ module_param(nlm_max_connections, uint, 0644);
static int lockd_init_net(struct net *net)
{
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ INIT_DELAYED_WORK(&ln->grace_period_end, grace_ender);
+ INIT_LIST_HEAD(&ln->grace_list);
+ spin_lock_init(&ln->nsm_clnt_lock);
return 0;
}
diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index 9a41fdc1951..b147d1ae71f 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -11,6 +11,7 @@
#include <linux/time.h>
#include <linux/lockd/lockd.h>
#include <linux/lockd/share.h>
+#include <linux/sunrpc/svc_xprt.h>
#define NLMDBG_FACILITY NLMDBG_CLIENT
@@ -151,7 +152,7 @@ nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
resp->cookie = argp->cookie;
/* Don't accept requests during grace period */
- if (locks_in_grace()) {
+ if (locks_in_grace(SVC_NET(rqstp))) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
@@ -161,7 +162,7 @@ nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
/* Try to cancel request. */
- resp->status = nlmsvc_cancel_blocked(file, &argp->lock);
+ resp->status = nlmsvc_cancel_blocked(SVC_NET(rqstp), file, &argp->lock);
dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
nlmsvc_release_host(host);
@@ -184,7 +185,7 @@ nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
resp->cookie = argp->cookie;
/* Don't accept new lock requests during grace period */
- if (locks_in_grace()) {
+ if (locks_in_grace(SVC_NET(rqstp))) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
@@ -194,7 +195,7 @@ nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
/* Now try to remove the lock */
- resp->status = nlmsvc_unlock(file, &argp->lock);
+ resp->status = nlmsvc_unlock(SVC_NET(rqstp), file, &argp->lock);
dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
nlmsvc_release_host(host);
@@ -256,6 +257,7 @@ static __be32 nlm4svc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args
return rpc_system_err;
call = nlm_alloc_call(host);
+ nlmsvc_release_host(host);
if (call == NULL)
return rpc_system_err;
@@ -321,7 +323,7 @@ nlm4svc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
resp->cookie = argp->cookie;
/* Don't accept new lock requests during grace period */
- if (locks_in_grace() && !argp->reclaim) {
+ if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
@@ -354,7 +356,7 @@ nlm4svc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
resp->cookie = argp->cookie;
/* Don't accept requests during grace period */
- if (locks_in_grace()) {
+ if (locks_in_grace(SVC_NET(rqstp))) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index e46353f41a4..8d80c990dff 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -26,7 +26,7 @@
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/sunrpc/clnt.h>
-#include <linux/sunrpc/svc.h>
+#include <linux/sunrpc/svc_xprt.h>
#include <linux/lockd/nlm.h>
#include <linux/lockd/lockd.h>
#include <linux/kthread.h>
@@ -219,7 +219,6 @@ nlmsvc_create_block(struct svc_rqst *rqstp, struct nlm_host *host,
struct nlm_block *block;
struct nlm_rqst *call = NULL;
- nlm_get_host(host);
call = nlm_alloc_call(host);
if (call == NULL)
return NULL;
@@ -290,7 +289,6 @@ static void nlmsvc_free_block(struct kref *kref)
dprintk("lockd: freeing block %p...\n", block);
/* Remove block from file's list of blocks */
- mutex_lock(&file->f_mutex);
list_del_init(&block->b_flist);
mutex_unlock(&file->f_mutex);
@@ -304,7 +302,7 @@ static void nlmsvc_free_block(struct kref *kref)
static void nlmsvc_release_block(struct nlm_block *block)
{
if (block != NULL)
- kref_put(&block->b_count, nlmsvc_free_block);
+ kref_put_mutex(&block->b_count, nlmsvc_free_block, &block->b_file->f_mutex);
}
/*
@@ -447,11 +445,11 @@ nlmsvc_lock(struct svc_rqst *rqstp, struct nlm_file *file,
goto out;
}
- if (locks_in_grace() && !reclaim) {
+ if (locks_in_grace(SVC_NET(rqstp)) && !reclaim) {
ret = nlm_lck_denied_grace_period;
goto out;
}
- if (reclaim && !locks_in_grace()) {
+ if (reclaim && !locks_in_grace(SVC_NET(rqstp))) {
ret = nlm_lck_denied_grace_period;
goto out;
}
@@ -559,7 +557,7 @@ nlmsvc_testlock(struct svc_rqst *rqstp, struct nlm_file *file,
goto out;
}
- if (locks_in_grace()) {
+ if (locks_in_grace(SVC_NET(rqstp))) {
ret = nlm_lck_denied_grace_period;
goto out;
}
@@ -603,7 +601,7 @@ out:
* must be removed.
*/
__be32
-nlmsvc_unlock(struct nlm_file *file, struct nlm_lock *lock)
+nlmsvc_unlock(struct net *net, struct nlm_file *file, struct nlm_lock *lock)
{
int error;
@@ -615,7 +613,7 @@ nlmsvc_unlock(struct nlm_file *file, struct nlm_lock *lock)
(long long)lock->fl.fl_end);
/* First, cancel any lock that might be there */
- nlmsvc_cancel_blocked(file, lock);
+ nlmsvc_cancel_blocked(net, file, lock);
lock->fl.fl_type = F_UNLCK;
error = vfs_lock_file(file->f_file, F_SETLK, &lock->fl, NULL);
@@ -631,7 +629,7 @@ nlmsvc_unlock(struct nlm_file *file, struct nlm_lock *lock)
* The calling procedure must check whether the file can be closed.
*/
__be32
-nlmsvc_cancel_blocked(struct nlm_file *file, struct nlm_lock *lock)
+nlmsvc_cancel_blocked(struct net *net, struct nlm_file *file, struct nlm_lock *lock)
{
struct nlm_block *block;
int status = 0;
@@ -643,7 +641,7 @@ nlmsvc_cancel_blocked(struct nlm_file *file, struct nlm_lock *lock)
(long long)lock->fl.fl_start,
(long long)lock->fl.fl_end);
- if (locks_in_grace())
+ if (locks_in_grace(net))
return nlm_lck_denied_grace_period;
mutex_lock(&file->f_mutex);
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index d27aab11f32..21171f0c647 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -11,6 +11,7 @@
#include <linux/time.h>
#include <linux/lockd/lockd.h>
#include <linux/lockd/share.h>
+#include <linux/sunrpc/svc_xprt.h>
#define NLMDBG_FACILITY NLMDBG_CLIENT
@@ -67,7 +68,8 @@ nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
/* Obtain file pointer. Not used by FREE_ALL call. */
if (filp != NULL) {
- if ((error = nlm_lookup_file(rqstp, &file, &lock->fh)) != 0)
+ error = cast_status(nlm_lookup_file(rqstp, &file, &lock->fh));
+ if (error != 0)
goto no_locks;
*filp = file;
@@ -175,13 +177,14 @@ nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
{
struct nlm_host *host;
struct nlm_file *file;
+ struct net *net = SVC_NET(rqstp);
dprintk("lockd: CANCEL called\n");
resp->cookie = argp->cookie;
/* Don't accept requests during grace period */
- if (locks_in_grace()) {
+ if (locks_in_grace(net)) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
@@ -191,7 +194,7 @@ nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
/* Try to cancel request. */
- resp->status = cast_status(nlmsvc_cancel_blocked(file, &argp->lock));
+ resp->status = cast_status(nlmsvc_cancel_blocked(net, file, &argp->lock));
dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
nlmsvc_release_host(host);
@@ -208,13 +211,14 @@ nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
{
struct nlm_host *host;
struct nlm_file *file;
+ struct net *net = SVC_NET(rqstp);
dprintk("lockd: UNLOCK called\n");
resp->cookie = argp->cookie;
/* Don't accept new lock requests during grace period */
- if (locks_in_grace()) {
+ if (locks_in_grace(net)) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
@@ -224,7 +228,7 @@ nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
/* Now try to remove the lock */
- resp->status = cast_status(nlmsvc_unlock(file, &argp->lock));
+ resp->status = cast_status(nlmsvc_unlock(net, file, &argp->lock));
dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
nlmsvc_release_host(host);
@@ -294,6 +298,7 @@ static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args
return rpc_system_err;
call = nlm_alloc_call(host);
+ nlmsvc_release_host(host);
if (call == NULL)
return rpc_system_err;
@@ -361,7 +366,7 @@ nlmsvc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
resp->cookie = argp->cookie;
/* Don't accept new lock requests during grace period */
- if (locks_in_grace() && !argp->reclaim) {
+ if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
@@ -394,7 +399,7 @@ nlmsvc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
resp->cookie = argp->cookie;
/* Don't accept requests during grace period */
- if (locks_in_grace()) {
+ if (locks_in_grace(SVC_NET(rqstp))) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index 2240d384d78..0deb5f6c9dd 100644
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c
@@ -309,7 +309,8 @@ nlm_release_file(struct nlm_file *file)
* Helpers function for resource traversal
*
* nlmsvc_mark_host:
- * used by the garbage collector; simply sets h_inuse.
+ * used by the garbage collector; simply sets h_inuse only for those
+ * hosts, which passed network check.
* Always returns 0.
*
* nlmsvc_same_host:
@@ -320,12 +321,15 @@ nlm_release_file(struct nlm_file *file)
* returns 1 iff the host is a client.
* Used by nlmsvc_invalidate_all
*/
+
static int
-nlmsvc_mark_host(void *data, struct nlm_host *dummy)
+nlmsvc_mark_host(void *data, struct nlm_host *hint)
{
struct nlm_host *host = data;
- host->h_inuse = 1;
+ if ((hint->net == NULL) ||
+ (host->net == hint->net))
+ host->h_inuse = 1;
return 0;
}
@@ -358,10 +362,13 @@ nlmsvc_is_client(void *data, struct nlm_host *dummy)
* Mark all hosts that still hold resources
*/
void
-nlmsvc_mark_resources(void)
+nlmsvc_mark_resources(struct net *net)
{
- dprintk("lockd: nlmsvc_mark_resources\n");
- nlm_traverse_files(NULL, nlmsvc_mark_host, NULL);
+ struct nlm_host hint;
+
+ dprintk("lockd: nlmsvc_mark_resources for net %p\n", net);
+ hint.net = net;
+ nlm_traverse_files(&hint, nlmsvc_mark_host, NULL);
}
/*