b=20433 decrease the usage of memory on clients.

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

diff --git a/lustre/lov/lov_obd.c b/lustre/lov/lov_obd.c
index 0d096fd..c1f91bc 100644 (file)
--- a/lustre/lov/lov_obd.c
+++ b/lustre/lov/lov_obd.c
@@ -1747,6 +1747,46 @@ static int lov_change_cbdata(struct obd_export *exp,
         RETURN(rc);
 }
 
+/* find any ldlm lock of the inode in lov
+ * return 0    not find
+ *        1    find one
+ *      < 0    error */
+static int lov_find_cbdata(struct obd_export *exp,
+                           struct lov_stripe_md *lsm, ldlm_iterator_t it,
+                           void *data)
+{
+        struct lov_obd *lov;
+        int rc = 0, i;
+        ENTRY;
+
+        ASSERT_LSM_MAGIC(lsm);
+
+        if (!exp || !exp->exp_obd)
+                RETURN(-ENODEV);
+
+        LASSERT_MDS_GROUP(lsm->lsm_object_gr);
+
+        lov = &exp->exp_obd->u.lov;
+        for (i = 0; i < lsm->lsm_stripe_count; i++) {
+                struct lov_stripe_md submd;
+                struct lov_oinfo *loi = lsm->lsm_oinfo[i];
+
+                if (!lov->lov_tgts[loi->loi_ost_idx]) {
+                        CDEBUG(D_HA, "lov idx %d NULL \n", loi->loi_ost_idx);
+                        continue;
+                }
+
+                submd.lsm_object_id = loi->loi_id;
+                submd.lsm_object_gr = loi->loi_gr;
+                submd.lsm_stripe_count = 0;
+                rc = obd_find_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
+                                     &submd, it, data);
+                if (rc != 0)
+                        RETURN(rc);
+        }
+        RETURN(rc);
+}
+
 static int lov_cancel(struct obd_export *exp, struct lov_stripe_md *lsm,
                       __u32 mode, struct lustre_handle *lockh)
 {
@@ -2739,6 +2779,7 @@ struct obd_ops lov_obd_ops = {
         .o_sync                = lov_sync,
         .o_enqueue             = lov_enqueue,
         .o_change_cbdata       = lov_change_cbdata,
+        .o_find_cbdata         = lov_find_cbdata,
         .o_cancel              = lov_cancel,
         .o_cancel_unused       = lov_cancel_unused,
         .o_iocontrol           = lov_iocontrol,