dlm: convert connections_lock in a mutex
The semaphore connections_lock is used as a mutex. Convert it to the mutex
API.
Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Cc: Christine Caulfield <ccaulfie@redhat.com>
Cc: David Teigland <teigland@redhat.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Teigland <teigland@redhat.com>
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 7c1e5e5..c7d232a 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -50,6 +50,7 @@
#include <linux/pagemap.h>
#include <linux/idr.h>
#include <linux/file.h>
+#include <linux/mutex.h>
#include <linux/sctp.h>
#include <net/sctp/user.h>
@@ -138,7 +139,7 @@
static struct workqueue_struct *send_workqueue;
static DEFINE_IDR(connections_idr);
-static DECLARE_MUTEX(connections_lock);
+static DEFINE_MUTEX(connections_lock);
static int max_nodeid;
static struct kmem_cache *con_cache;
@@ -205,9 +206,9 @@
{
struct connection *con;
- down(&connections_lock);
+ mutex_lock(&connections_lock);
con = __nodeid2con(nodeid, allocation);
- up(&connections_lock);
+ mutex_unlock(&connections_lock);
return con;
}
@@ -218,15 +219,15 @@
int i;
struct connection *con;
- down(&connections_lock);
+ mutex_lock(&connections_lock);
for (i=0; i<=max_nodeid; i++) {
con = __nodeid2con(i, 0);
if (con && con->sctp_assoc == assoc_id) {
- up(&connections_lock);
+ mutex_unlock(&connections_lock);
return con;
}
}
- up(&connections_lock);
+ mutex_unlock(&connections_lock);
return NULL;
}
@@ -381,7 +382,7 @@
int i;
struct connection *con;
- down(&connections_lock);
+ mutex_lock(&connections_lock);
for (i=1; i<=max_nodeid; i++) {
con = __nodeid2con(i, 0);
if (!con)
@@ -393,7 +394,7 @@
}
}
}
- up(&connections_lock);
+ mutex_unlock(&connections_lock);
}
/* Something happened to an association */
@@ -1417,7 +1418,7 @@
/* Set all the flags to prevent any
socket activity.
*/
- down(&connections_lock);
+ mutex_lock(&connections_lock);
for (i = 0; i <= max_nodeid; i++) {
con = __nodeid2con(i, 0);
if (con) {
@@ -1426,11 +1427,11 @@
con->sock->sk->sk_user_data = NULL;
}
}
- up(&connections_lock);
+ mutex_unlock(&connections_lock);
work_stop();
- down(&connections_lock);
+ mutex_lock(&connections_lock);
clean_writequeues();
for (i = 0; i <= max_nodeid; i++) {
@@ -1443,7 +1444,7 @@
}
}
max_nodeid = 0;
- up(&connections_lock);
+ mutex_unlock(&connections_lock);
kmem_cache_destroy(con_cache);
idr_init(&connections_idr);
}