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-rw-r--r--net/ceph/messenger.c32
1 files changed, 18 insertions, 14 deletions
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index e1e53bb2d0cf..44d8c77cabdd 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -80,8 +80,8 @@ const char *ceph_pr_addr(const struct sockaddr_storage *ss)
break;
default:
- snprintf(s, MAX_ADDR_STR_LEN, "(unknown sockaddr family %d)",
- (int)ss->ss_family);
+ snprintf(s, MAX_ADDR_STR_LEN, "(unknown sockaddr family %hu)",
+ ss->ss_family);
}
return s;
@@ -101,8 +101,10 @@ static struct workqueue_struct *ceph_msgr_wq;
void _ceph_msgr_exit(void)
{
- if (ceph_msgr_wq)
+ if (ceph_msgr_wq) {
destroy_workqueue(ceph_msgr_wq);
+ ceph_msgr_wq = NULL;
+ }
BUG_ON(zero_page_address == NULL);
zero_page_address = NULL;
@@ -167,8 +169,7 @@ static void ceph_data_ready(struct sock *sk, int count_unused)
/* socket has buffer space for writing */
static void ceph_write_space(struct sock *sk)
{
- struct ceph_connection *con =
- (struct ceph_connection *)sk->sk_user_data;
+ struct ceph_connection *con = sk->sk_user_data;
/* only queue to workqueue if there is data we want to write,
* and there is sufficient space in the socket buffer to accept
@@ -216,6 +217,8 @@ static void ceph_state_change(struct sock *sk)
dout("ceph_state_change TCP_ESTABLISHED\n");
queue_con(con);
break;
+ default: /* Everything else is uninteresting */
+ break;
}
}
@@ -420,22 +423,23 @@ bool ceph_con_opened(struct ceph_connection *con)
*/
struct ceph_connection *ceph_con_get(struct ceph_connection *con)
{
- dout("con_get %p nref = %d -> %d\n", con,
- atomic_read(&con->nref), atomic_read(&con->nref) + 1);
- if (atomic_inc_not_zero(&con->nref))
- return con;
- return NULL;
+ int nref = __atomic_add_unless(&con->nref, 1, 0);
+
+ dout("con_get %p nref = %d -> %d\n", con, nref, nref + 1);
+
+ return nref ? con : NULL;
}
void ceph_con_put(struct ceph_connection *con)
{
- dout("con_put %p nref = %d -> %d\n", con,
- atomic_read(&con->nref), atomic_read(&con->nref) - 1);
- BUG_ON(atomic_read(&con->nref) == 0);
- if (atomic_dec_and_test(&con->nref)) {
+ int nref = atomic_dec_return(&con->nref);
+
+ BUG_ON(nref < 0);
+ if (nref == 0) {
BUG_ON(con->sock);
kfree(con);
}
+ dout("con_put %p nref = %d -> %d\n", con, nref + 1, nref);
}
/*