LU-3963 obdclass: convert to linux list api

[fs/lustre-release.git] / lustre / obdclass / lustre_peer.c

diff --git a/lustre/obdclass/lustre_peer.c b/lustre/obdclass/lustre_peer.c
index 20e14dc..46581a5 100644 (file)
--- a/lustre/obdclass/lustre_peer.c
+++ b/lustre/obdclass/lustre_peer.c
@@ -27,7 +27,7 @@
  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, Whamcloud, Inc.
+ * Copyright (c) 2011, 2012, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -50,20 +50,20 @@
 #define NIDS_MAX        32
 
 struct uuid_nid_data {
-        cfs_list_t       un_list;
-        struct obd_uuid  un_uuid;
-        int              un_nid_count;
-        lnet_nid_t       un_nids[NIDS_MAX];
+       struct list_head        un_list;
+       struct obd_uuid         un_uuid;
+       int                     un_nid_count;
+       lnet_nid_t              un_nids[NIDS_MAX];
 };
 
 /* FIXME: This should probably become more elegant than a global linked list */
-static cfs_list_t           g_uuid_list;
-static cfs_spinlock_t       g_uuid_lock;
+static struct list_head        g_uuid_list;
+static spinlock_t      g_uuid_lock;
 
 void class_init_uuidlist(void)
 {
-        CFS_INIT_LIST_HEAD(&g_uuid_list);
-        cfs_spin_lock_init(&g_uuid_lock);
+       INIT_LIST_HEAD(&g_uuid_list);
+       spin_lock_init(&g_uuid_lock);
 }
 
 void class_exit_uuidlist(void)
@@ -74,24 +74,24 @@ void class_exit_uuidlist(void)
 
 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index)
 {
-        struct uuid_nid_data *data;
-        struct obd_uuid tmp;
-        int rc = -ENOENT;
-
-        obd_str2uuid(&tmp, uuid);
-        cfs_spin_lock(&g_uuid_lock);
-        cfs_list_for_each_entry(data, &g_uuid_list, un_list) {
-                if (obd_uuid_equals(&data->un_uuid, &tmp)) {
-                        if (index >= data->un_nid_count)
-                                break;
-
-                        rc = 0;
-                        *peer_nid = data->un_nids[index];
-                        break;
-                }
-        }
-        cfs_spin_unlock(&g_uuid_lock);
-        return rc;
+       struct uuid_nid_data *data;
+       struct obd_uuid tmp;
+       int rc = -ENOENT;
+
+       obd_str2uuid(&tmp, uuid);
+       spin_lock(&g_uuid_lock);
+       list_for_each_entry(data, &g_uuid_list, un_list) {
+               if (obd_uuid_equals(&data->un_uuid, &tmp)) {
+                       if (index >= data->un_nid_count)
+                               break;
+
+                       rc = 0;
+                       *peer_nid = data->un_nids[index];
+                       break;
+               }
+       }
+       spin_unlock(&g_uuid_lock);
+       return rc;
 }
 EXPORT_SYMBOL(lustre_uuid_to_peer);
 
@@ -115,8 +115,8 @@ int class_add_uuid(const char *uuid, __u64 nid)
         data->un_nids[0] = nid;
         data->un_nid_count = 1;
 
-        cfs_spin_lock(&g_uuid_lock);
-        cfs_list_for_each_entry(entry, &g_uuid_list, un_list) {
+       spin_lock(&g_uuid_lock);
+       list_for_each_entry(entry, &g_uuid_list, un_list) {
                 if (obd_uuid_equals(&entry->un_uuid, &data->un_uuid)) {
                         int i;
 
@@ -133,8 +133,8 @@ int class_add_uuid(const char *uuid, __u64 nid)
                 }
         }
         if (!found)
-                cfs_list_add(&data->un_list, &g_uuid_list);
-        cfs_spin_unlock(&g_uuid_lock);
+               list_add(&data->un_list, &g_uuid_list);
+       spin_unlock(&g_uuid_lock);
 
         if (found) {
                 CDEBUG(D_INFO, "found uuid %s %s cnt=%d\n", uuid,
@@ -145,47 +145,49 @@ int class_add_uuid(const char *uuid, __u64 nid)
         }
         return 0;
 }
+EXPORT_SYMBOL(class_add_uuid);
 
 /* Delete the nids for one uuid if specified, otherwise delete all */
 int class_del_uuid(const char *uuid)
 {
-        CFS_LIST_HEAD(deathrow);
-        struct uuid_nid_data *data;
-
-        cfs_spin_lock(&g_uuid_lock);
-        if (uuid != NULL) {
-                struct obd_uuid tmp;
-
-                obd_str2uuid(&tmp, uuid);
-                cfs_list_for_each_entry(data, &g_uuid_list, un_list) {
-                        if (obd_uuid_equals(&data->un_uuid, &tmp)) {
-                                cfs_list_move(&data->un_list, &deathrow);
-                                break;
-                        }
-                }
-        } else
-                cfs_list_splice_init(&g_uuid_list, &deathrow);
-        cfs_spin_unlock(&g_uuid_lock);
-
-        if (uuid != NULL && cfs_list_empty(&deathrow)) {
-                CDEBUG(D_INFO, "Try to delete a non-existent uuid %s\n", uuid);
-                return -EINVAL;
-        }
-
-        while (!cfs_list_empty(&deathrow)) {
-                data = cfs_list_entry(deathrow.next, struct uuid_nid_data,
-                                      un_list);
-                cfs_list_del(&data->un_list);
-
-                CDEBUG(D_INFO, "del uuid %s %s/%d\n",
-                       obd_uuid2str(&data->un_uuid),
-                       libcfs_nid2str(data->un_nids[0]),
-                       data->un_nid_count);
-
-                OBD_FREE(data, sizeof(*data));
-        }
-
-        return 0;
+       struct uuid_nid_data *data;
+       struct list_head deathrow;
+
+       INIT_LIST_HEAD(&deathrow);
+
+       spin_lock(&g_uuid_lock);
+       if (uuid != NULL) {
+               struct obd_uuid tmp;
+
+               obd_str2uuid(&tmp, uuid);
+               list_for_each_entry(data, &g_uuid_list, un_list) {
+                       if (obd_uuid_equals(&data->un_uuid, &tmp)) {
+                               list_move(&data->un_list, &deathrow);
+                               break;
+                       }
+               }
+       } else
+               list_splice_init(&g_uuid_list, &deathrow);
+       spin_unlock(&g_uuid_lock);
+
+       if (uuid != NULL && list_empty(&deathrow)) {
+               CDEBUG(D_INFO, "Try to delete a non-existent uuid %s\n", uuid);
+               return -EINVAL;
+       }
+
+       while (!list_empty(&deathrow)) {
+               data = list_entry(deathrow.next, struct uuid_nid_data,
+                                 un_list);
+               list_del(&data->un_list);
+
+               CDEBUG(D_INFO, "del uuid %s %s/%d\n",
+                      obd_uuid2str(&data->un_uuid),
+                      libcfs_nid2str(data->un_nids[0]),
+                      data->un_nid_count);
+
+               OBD_FREE(data, sizeof(*data));
+       }
+       return 0;
 }
 
 /* check if @nid exists in nid list of @uuid */
@@ -198,8 +200,8 @@ int class_check_uuid(struct obd_uuid *uuid, __u64 nid)
         CDEBUG(D_INFO, "check if uuid %s has %s.\n",
                obd_uuid2str(uuid), libcfs_nid2str(nid));
 
-        cfs_spin_lock(&g_uuid_lock);
-        cfs_list_for_each_entry(entry, &g_uuid_list, un_list) {
+       spin_lock(&g_uuid_lock);
+       list_for_each_entry(entry, &g_uuid_list, un_list) {
                 int i;
 
                 if (!obd_uuid_equals(&entry->un_uuid, uuid))
@@ -214,7 +216,7 @@ int class_check_uuid(struct obd_uuid *uuid, __u64 nid)
                 }
                 break;
         }
-        cfs_spin_unlock (&g_uuid_lock);
-        RETURN(found);
+       spin_unlock(&g_uuid_lock);
+       RETURN(found);
 }
 EXPORT_SYMBOL(class_check_uuid);