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-rw-r--r--fs/dlm/Kconfig1
-rw-r--r--fs/dlm/config.c5
-rw-r--r--fs/dlm/config.h2
-rw-r--r--fs/dlm/lock.c50
-rw-r--r--fs/dlm/lockspace.c2
-rw-r--r--fs/dlm/lowcomms.c14
6 files changed, 48 insertions, 26 deletions
diff --git a/fs/dlm/Kconfig b/fs/dlm/Kconfig
index f82a4952769d..b46165df5a91 100644
--- a/fs/dlm/Kconfig
+++ b/fs/dlm/Kconfig
@@ -3,7 +3,6 @@ menuconfig DLM
tristate "Distributed Lock Manager (DLM)"
depends on INET
depends on SYSFS && CONFIGFS_FS && (IPV6 || IPV6=n)
- select IP_SCTP
help
A general purpose distributed lock manager for kernel or userspace
applications.
diff --git a/fs/dlm/config.c b/fs/dlm/config.c
index b2f21aa00719..a23fd524a6ee 100644
--- a/fs/dlm/config.c
+++ b/fs/dlm/config.c
@@ -197,6 +197,9 @@ static int dlm_check_protocol_and_dlm_running(unsigned int x)
break;
case 1:
/* SCTP */
+ if (!IS_ENABLED(CONFIG_IP_SCTP))
+ return -EOPNOTSUPP;
+
break;
default:
return -EINVAL;
@@ -935,7 +938,7 @@ int dlm_comm_seq(int nodeid, uint32_t *seq, bool locked)
mutex_unlock(&clusters_root.subsys.su_mutex);
}
if (!cm)
- return -EEXIST;
+ return -ENOENT;
*seq = cm->seq;
put_comm(cm);
diff --git a/fs/dlm/config.h b/fs/dlm/config.h
index e48c4f9686d3..13a3d0b26194 100644
--- a/fs/dlm/config.h
+++ b/fs/dlm/config.h
@@ -23,7 +23,7 @@ struct dlm_config_node {
extern const struct rhashtable_params dlm_rhash_rsb_params;
-#define DLM_MAX_ADDR_COUNT 3
+#define DLM_MAX_ADDR_COUNT 8
#define DLM_PROTO_TCP 0
#define DLM_PROTO_SCTP 1
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index fc1d710166e9..6dd3a524cd35 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -509,7 +509,7 @@ static void add_scan(struct dlm_ls *ls, struct dlm_rsb *r)
void dlm_rsb_scan(struct timer_list *timer)
{
- struct dlm_ls *ls = from_timer(ls, timer, ls_scan_timer);
+ struct dlm_ls *ls = timer_container_of(ls, timer, ls_scan_timer);
int our_nodeid = dlm_our_nodeid();
struct dlm_rsb *r;
int rv;
@@ -741,6 +741,7 @@ static int find_rsb_dir(struct dlm_ls *ls, const void *name, int len,
read_lock_bh(&ls->ls_rsbtbl_lock);
if (!rsb_flag(r, RSB_HASHED)) {
read_unlock_bh(&ls->ls_rsbtbl_lock);
+ error = -EBADR;
goto do_new;
}
@@ -784,6 +785,7 @@ static int find_rsb_dir(struct dlm_ls *ls, const void *name, int len,
}
} else {
write_unlock_bh(&ls->ls_rsbtbl_lock);
+ error = -EBADR;
goto do_new;
}
@@ -824,9 +826,12 @@ static int find_rsb_dir(struct dlm_ls *ls, const void *name, int len,
r->res_first_lkid = 0;
}
- /* A dir record will not be on the scan list. */
- if (r->res_dir_nodeid != our_nodeid)
- del_scan(ls, r);
+ /* we always deactivate scan timer for the rsb, when
+ * we move it out of the inactive state as rsb state
+ * can be changed and scan timers are only for inactive
+ * rsbs.
+ */
+ del_scan(ls, r);
list_move(&r->res_slow_list, &ls->ls_slow_active);
rsb_clear_flag(r, RSB_INACTIVE);
kref_init(&r->res_ref); /* ref is now used in active state */
@@ -989,10 +994,10 @@ static int find_rsb_nodir(struct dlm_ls *ls, const void *name, int len,
r->res_nodeid = 0;
}
+ del_scan(ls, r);
list_move(&r->res_slow_list, &ls->ls_slow_active);
rsb_clear_flag(r, RSB_INACTIVE);
kref_init(&r->res_ref);
- del_scan(ls, r);
write_unlock_bh(&ls->ls_rsbtbl_lock);
goto out;
@@ -1337,9 +1342,13 @@ static int _dlm_master_lookup(struct dlm_ls *ls, int from_nodeid, const char *na
__dlm_master_lookup(ls, r, our_nodeid, from_nodeid, true, flags,
r_nodeid, result);
- /* A dir record rsb should never be on scan list. */
- /* Try to fix this with del_scan? */
- WARN_ON(!list_empty(&r->res_scan_list));
+ /* A dir record rsb should never be on scan list.
+ * Except when we are the dir and master node.
+ * This function should only be called by the dir
+ * node.
+ */
+ WARN_ON(!list_empty(&r->res_scan_list) &&
+ r->res_master_nodeid != our_nodeid);
write_unlock_bh(&ls->ls_rsbtbl_lock);
@@ -1430,16 +1439,23 @@ static void deactivate_rsb(struct kref *kref)
list_move(&r->res_slow_list, &ls->ls_slow_inactive);
/*
- * When the rsb becomes unused:
- * - If it's not a dir record for a remote master rsb,
- * then it is put on the scan list to be freed.
- * - If it's a dir record for a remote master rsb,
- * then it is kept in the inactive state until
- * receive_remove() from the master node.
+ * When the rsb becomes unused, there are two possibilities:
+ * 1. Leave the inactive rsb in place (don't remove it).
+ * 2. Add it to the scan list to be removed.
+ *
+ * 1 is done when the rsb is acting as the dir record
+ * for a remotely mastered rsb. The rsb must be left
+ * in place as an inactive rsb to act as the dir record.
+ *
+ * 2 is done when a) the rsb is not the master and not the
+ * dir record, b) when the rsb is both the master and the
+ * dir record, c) when the rsb is master but not dir record.
+ *
+ * (If no directory is used, the rsb can always be removed.)
*/
- if (!dlm_no_directory(ls) &&
- (r->res_master_nodeid != our_nodeid) &&
- (dlm_dir_nodeid(r) != our_nodeid))
+ if (dlm_no_directory(ls) ||
+ (r->res_master_nodeid == our_nodeid ||
+ dlm_dir_nodeid(r) != our_nodeid))
add_scan(ls, r);
if (r->res_lvbptr) {
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index 8afac6e2dff0..1929327ffbe1 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -576,7 +576,7 @@ static int new_lockspace(const char *name, const char *cluster,
lockspace to start running (via sysfs) in dlm_ls_start(). */
error = do_uevent(ls, 1);
- if (error)
+ if (error < 0)
goto out_recoverd;
/* wait until recovery is successful or failed */
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index df40c3fd1070..e4373bce1bc2 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -160,6 +160,7 @@ struct dlm_proto_ops {
bool try_new_addr;
const char *name;
int proto;
+ int how;
void (*sockopts)(struct socket *sock);
int (*bind)(struct socket *sock);
@@ -462,7 +463,8 @@ static bool dlm_lowcomms_con_has_addr(const struct connection *con,
int dlm_lowcomms_addr(int nodeid, struct sockaddr_storage *addr)
{
struct connection *con;
- bool ret, idx;
+ bool ret;
+ int idx;
idx = srcu_read_lock(&connections_srcu);
con = nodeid2con(nodeid, GFP_NOFS);
@@ -532,7 +534,7 @@ static void lowcomms_state_change(struct sock *sk)
/* SCTP layer is not calling sk_data_ready when the connection
* is done, so we catch the signal through here.
*/
- if (sk->sk_shutdown == RCV_SHUTDOWN)
+ if (sk->sk_shutdown & RCV_SHUTDOWN)
lowcomms_data_ready(sk);
}
@@ -809,7 +811,7 @@ static void shutdown_connection(struct connection *con, bool and_other)
return;
}
- ret = kernel_sock_shutdown(con->sock, SHUT_WR);
+ ret = kernel_sock_shutdown(con->sock, dlm_proto_ops->how);
up_read(&con->sock_lock);
if (ret) {
log_print("Connection %p failed to shutdown: %d will force close",
@@ -1825,8 +1827,8 @@ static int dlm_tcp_listen_validate(void)
{
/* We don't support multi-homed hosts */
if (dlm_local_count > 1) {
- log_print("TCP protocol can't handle multi-homed hosts, try SCTP");
- return -EINVAL;
+ log_print("Detect multi-homed hosts but use only the first IP address.");
+ log_print("Try SCTP, if you want to enable multi-link.");
}
return 0;
@@ -1857,6 +1859,7 @@ static int dlm_tcp_listen_bind(struct socket *sock)
static const struct dlm_proto_ops dlm_tcp_ops = {
.name = "TCP",
.proto = IPPROTO_TCP,
+ .how = SHUT_WR,
.sockopts = dlm_tcp_sockopts,
.bind = dlm_tcp_bind,
.listen_validate = dlm_tcp_listen_validate,
@@ -1895,6 +1898,7 @@ static void dlm_sctp_sockopts(struct socket *sock)
static const struct dlm_proto_ops dlm_sctp_ops = {
.name = "SCTP",
.proto = IPPROTO_SCTP,
+ .how = SHUT_RDWR,
.try_new_addr = true,
.sockopts = dlm_sctp_sockopts,
.bind = dlm_sctp_bind,
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-25 20:45:17 +0300