summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--net/smc/af_smc.c8
-rw-r--r--net/smc/smc_core.c20
-rw-r--r--net/smc/smc_core.h2
-rw-r--r--net/smc/smc_llc.c18
4 files changed, 24 insertions, 24 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 1c0fe9ba5358..6e93ad61d6a2 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -502,7 +502,7 @@ static int smcr_lgr_reg_sndbufs(struct smc_link *link,
return -EINVAL;
/* protect against parallel smcr_link_reg_buf() */
- mutex_lock(&lgr->llc_conf_mutex);
+ down_write(&lgr->llc_conf_mutex);
for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
if (!smc_link_active(&lgr->lnk[i]))
continue;
@@ -510,7 +510,7 @@ static int smcr_lgr_reg_sndbufs(struct smc_link *link,
if (rc)
break;
}
- mutex_unlock(&lgr->llc_conf_mutex);
+ up_write(&lgr->llc_conf_mutex);
return rc;
}
@@ -527,7 +527,7 @@ static int smcr_lgr_reg_rmbs(struct smc_link *link,
/* protect against parallel smc_llc_cli_rkey_exchange() and
* parallel smcr_link_reg_buf()
*/
- mutex_lock(&lgr->llc_conf_mutex);
+ down_write(&lgr->llc_conf_mutex);
for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
if (!smc_link_active(&lgr->lnk[i]))
continue;
@@ -544,7 +544,7 @@ static int smcr_lgr_reg_rmbs(struct smc_link *link,
}
rmb_desc->is_conf_rkey = true;
out:
- mutex_unlock(&lgr->llc_conf_mutex);
+ up_write(&lgr->llc_conf_mutex);
smc_llc_flow_stop(lgr, &lgr->llc_flow_lcl);
return rc;
}
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 7642b16c41d1..22ddce66d3ff 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -1106,10 +1106,10 @@ static void smcr_buf_unuse(struct smc_buf_desc *buf_desc, bool is_rmb,
rc = smc_llc_flow_initiate(lgr, SMC_LLC_FLOW_RKEY);
if (!rc) {
/* protect against smc_llc_cli_rkey_exchange() */
- mutex_lock(&lgr->llc_conf_mutex);
+ down_write(&lgr->llc_conf_mutex);
smc_llc_do_delete_rkey(lgr, buf_desc);
buf_desc->is_conf_rkey = false;
- mutex_unlock(&lgr->llc_conf_mutex);
+ up_write(&lgr->llc_conf_mutex);
smc_llc_flow_stop(lgr, &lgr->llc_flow_lcl);
}
}
@@ -1377,12 +1377,12 @@ static void smc_lgr_free(struct smc_link_group *lgr)
int i;
if (!lgr->is_smcd) {
- mutex_lock(&lgr->llc_conf_mutex);
+ down_write(&lgr->llc_conf_mutex);
for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
if (lgr->lnk[i].state != SMC_LNK_UNUSED)
smcr_link_clear(&lgr->lnk[i], false);
}
- mutex_unlock(&lgr->llc_conf_mutex);
+ up_write(&lgr->llc_conf_mutex);
smc_llc_lgr_clear(lgr);
}
@@ -1696,12 +1696,12 @@ static void smcr_link_down(struct smc_link *lnk)
} else {
if (lgr->llc_flow_lcl.type != SMC_LLC_FLOW_NONE) {
/* another llc task is ongoing */
- mutex_unlock(&lgr->llc_conf_mutex);
+ up_write(&lgr->llc_conf_mutex);
wait_event_timeout(lgr->llc_flow_waiter,
(list_empty(&lgr->list) ||
lgr->llc_flow_lcl.type == SMC_LLC_FLOW_NONE),
SMC_LLC_WAIT_TIME);
- mutex_lock(&lgr->llc_conf_mutex);
+ down_write(&lgr->llc_conf_mutex);
}
if (!list_empty(&lgr->list)) {
smc_llc_send_delete_link(to_lnk, del_link_id,
@@ -1761,9 +1761,9 @@ static void smc_link_down_work(struct work_struct *work)
if (list_empty(&lgr->list))
return;
wake_up_all(&lgr->llc_msg_waiter);
- mutex_lock(&lgr->llc_conf_mutex);
+ down_write(&lgr->llc_conf_mutex);
smcr_link_down(link);
- mutex_unlock(&lgr->llc_conf_mutex);
+ up_write(&lgr->llc_conf_mutex);
}
static int smc_vlan_by_tcpsk_walk(struct net_device *lower_dev,
@@ -2247,7 +2247,7 @@ static int smcr_buf_map_usable_links(struct smc_link_group *lgr,
int i, rc = 0, cnt = 0;
/* protect against parallel link reconfiguration */
- mutex_lock(&lgr->llc_conf_mutex);
+ down_write(&lgr->llc_conf_mutex);
for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
struct smc_link *lnk = &lgr->lnk[i];
@@ -2260,7 +2260,7 @@ static int smcr_buf_map_usable_links(struct smc_link_group *lgr,
cnt++;
}
out:
- mutex_unlock(&lgr->llc_conf_mutex);
+ up_write(&lgr->llc_conf_mutex);
if (!rc && !cnt)
rc = -EINVAL;
return rc;
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h
index 285f9bd8e232..bd7198b72dc1 100644
--- a/net/smc/smc_core.h
+++ b/net/smc/smc_core.h
@@ -298,7 +298,7 @@ struct smc_link_group {
/* queue for llc events */
spinlock_t llc_event_q_lock;
/* protects llc_event_q */
- struct mutex llc_conf_mutex;
+ struct rw_semaphore llc_conf_mutex;
/* protects lgr reconfig. */
struct work_struct llc_add_link_work;
struct work_struct llc_del_link_work;
diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c
index 524649d0ab65..c0e73e436e98 100644
--- a/net/smc/smc_llc.c
+++ b/net/smc/smc_llc.c
@@ -1202,12 +1202,12 @@ static void smc_llc_process_cli_add_link(struct smc_link_group *lgr)
qentry = smc_llc_flow_qentry_clr(&lgr->llc_flow_lcl);
- mutex_lock(&lgr->llc_conf_mutex);
+ down_write(&lgr->llc_conf_mutex);
if (smc_llc_is_local_add_link(&qentry->msg))
smc_llc_cli_add_link_invite(qentry->link, qentry);
else
smc_llc_cli_add_link(qentry->link, qentry);
- mutex_unlock(&lgr->llc_conf_mutex);
+ up_write(&lgr->llc_conf_mutex);
}
static int smc_llc_active_link_count(struct smc_link_group *lgr)
@@ -1509,13 +1509,13 @@ static void smc_llc_process_srv_add_link(struct smc_link_group *lgr)
qentry = smc_llc_flow_qentry_clr(&lgr->llc_flow_lcl);
- mutex_lock(&lgr->llc_conf_mutex);
+ down_write(&lgr->llc_conf_mutex);
rc = smc_llc_srv_add_link(link, qentry);
if (!rc && lgr->type == SMC_LGR_SYMMETRIC) {
/* delete any asymmetric link */
smc_llc_delete_asym_link(lgr);
}
- mutex_unlock(&lgr->llc_conf_mutex);
+ up_write(&lgr->llc_conf_mutex);
kfree(qentry);
}
@@ -1582,7 +1582,7 @@ static void smc_llc_process_cli_delete_link(struct smc_link_group *lgr)
smc_lgr_terminate_sched(lgr);
goto out;
}
- mutex_lock(&lgr->llc_conf_mutex);
+ down_write(&lgr->llc_conf_mutex);
/* delete single link */
for (lnk_idx = 0; lnk_idx < SMC_LINKS_PER_LGR_MAX; lnk_idx++) {
if (lgr->lnk[lnk_idx].link_id != del_llc->link_num)
@@ -1616,7 +1616,7 @@ static void smc_llc_process_cli_delete_link(struct smc_link_group *lgr)
smc_lgr_terminate_sched(lgr);
}
out_unlock:
- mutex_unlock(&lgr->llc_conf_mutex);
+ up_write(&lgr->llc_conf_mutex);
out:
kfree(qentry);
}
@@ -1652,7 +1652,7 @@ static void smc_llc_process_srv_delete_link(struct smc_link_group *lgr)
int active_links;
int i;
- mutex_lock(&lgr->llc_conf_mutex);
+ down_write(&lgr->llc_conf_mutex);
qentry = smc_llc_flow_qentry_clr(&lgr->llc_flow_lcl);
lnk = qentry->link;
del_llc = &qentry->msg.delete_link;
@@ -1708,7 +1708,7 @@ static void smc_llc_process_srv_delete_link(struct smc_link_group *lgr)
smc_llc_add_link_local(lnk);
}
out:
- mutex_unlock(&lgr->llc_conf_mutex);
+ up_write(&lgr->llc_conf_mutex);
kfree(qentry);
}
@@ -2126,7 +2126,7 @@ void smc_llc_lgr_init(struct smc_link_group *lgr, struct smc_sock *smc)
spin_lock_init(&lgr->llc_flow_lock);
init_waitqueue_head(&lgr->llc_flow_waiter);
init_waitqueue_head(&lgr->llc_msg_waiter);
- mutex_init(&lgr->llc_conf_mutex);
+ init_rwsem(&lgr->llc_conf_mutex);
lgr->llc_testlink_time = READ_ONCE(net->smc.sysctl_smcr_testlink_time);
}
generated by cgit (git 2.34.1) at 2025-04-04 09:09:06 +0000