LU-641 obdclass: use rwlock for obd_dev_lock

[fs/lustre-release.git] / lustre / obdclass / linux / linux-module.c

diff --git a/lustre/obdclass/linux/linux-module.c b/lustre/obdclass/linux/linux-module.c
index d893f16..f8b7195 100644 (file)
--- a/lustre/obdclass/linux/linux-module.c
+++ b/lustre/obdclass/linux/linux-module.c
@@ -290,7 +290,7 @@ static int obd_proc_read_health(char *page, char **start, off_t off,
         if (libcfs_catastrophe)
                 rc += snprintf(page + rc, count - rc, "LBUG\n");
 
-        cfs_spin_lock(&obd_dev_lock);
+        cfs_read_lock(&obd_dev_lock);
         for (i = 0; i < class_devno_max(); i++) {
                 struct obd_device *obd;
 
@@ -303,7 +303,7 @@ static int obd_proc_read_health(char *page, char **start, off_t off,
                         continue;
 
                 class_incref(obd, __FUNCTION__, cfs_current());
-                cfs_spin_unlock(&obd_dev_lock);
+                cfs_read_unlock(&obd_dev_lock);
 
                 if (obd_health_check(obd)) {
                         rc += snprintf(page + rc, count - rc,
@@ -311,9 +311,9 @@ static int obd_proc_read_health(char *page, char **start, off_t off,
                                        obd->obd_name);
                 }
                 class_decref(obd, __FUNCTION__, cfs_current());
-                cfs_spin_lock(&obd_dev_lock);
+                cfs_read_lock(&obd_dev_lock);
         }
-        cfs_spin_unlock(&obd_dev_lock);
+        cfs_read_unlock(&obd_dev_lock);
 
         if (rc == 0)
                 return snprintf(page, count, "healthy\n");