b=22176 Add .sync_fs super block handler

[fs/lustre-release.git] / lustre / lov / lov_obd.c

diff --git a/lustre/lov/lov_obd.c b/lustre/lov/lov_obd.c
index b82202a..1ab938a 100644 (file)
--- a/lustre/lov/lov_obd.c
+++ b/lustre/lov/lov_obd.c
@@ -1592,6 +1592,40 @@ static int lov_sync(struct obd_export *exp, struct obdo *oa,
         RETURN(rc);
 }
 
+static int lov_sync_fs(struct obd_device *obd, struct obd_info *dummy,
+                       int wait)
+{
+        struct lov_obd *lov;
+        struct obd_info oinfo = { { { 0 } } };
+        struct lov_request *req;
+        struct lov_request_set *set;
+        struct l_wait_info  lwi = { 0 };
+        cfs_list_t *pos;
+        int rc = 0;
+        ENTRY;
+
+        lov = &obd->u.lov;
+        rc  = lov_prep_sync_fs_set(obd, &oinfo, &set);
+        if (rc)
+                RETURN(rc);
+
+        cfs_list_for_each(pos, &set->set_list) {
+                struct obd_device *osc_obd;
+                req = cfs_list_entry(pos, struct lov_request, rq_link);
+
+                osc_obd = class_exp2obd(lov->lov_tgts[req->rq_idx]->ltd_exp);
+                rc = obd_sync_fs(osc_obd, &req->rq_oi, wait);
+                if (rc)
+                        break;
+        }
+        /* if wait then check if all sync_fs IO's are done */
+        if (wait)
+                l_wait_event(set->set_waitq, lov_finished_set(set), &lwi);
+
+        rc = lov_fini_sync_fs_set(set);
+        RETURN(rc);
+}
+
 static int lov_brw_check(struct lov_obd *lov, struct obd_info *lov_oinfo,
                          obd_count oa_bufs, struct brw_page *pga)
 {
@@ -2822,6 +2856,7 @@ struct obd_ops lov_obd_ops = {
         .o_pool_del            = lov_pool_del,
         .o_getref              = lov_getref,
         .o_putref              = lov_putref,
+        .o_sync_fs             = lov_sync_fs,
 };
 
 static quota_interface_t *quota_interface;