b=20631 grouplock use from MDT for HSM

[fs/lustre-release.git] / lustre / mdd / mdd_lov.c

diff --git a/lustre/mdd/mdd_lov.c b/lustre/mdd/mdd_lov.c
index 1e16f38..2ec38a7 100644 (file)
--- a/lustre/mdd/mdd_lov.c
+++ b/lustre/mdd/mdd_lov.c
@@ -806,3 +806,167 @@ int mdd_lov_setattr_async(const struct lu_env *env, struct mdd_object *obj,
                                    lmm_size, logcookies, fid, NULL);
         RETURN(rc);
 }
+
+static int grouplock_blocking_ast(struct ldlm_lock *lock,
+                                  struct ldlm_lock_desc *desc,
+                                  void *data, int flag)
+{
+        struct md_attr *ma = data;
+        struct lustre_handle lockh;
+        int rc = 0;
+        ENTRY;
+
+        switch (flag)
+        {
+                case LDLM_CB_BLOCKING :
+                        /* lock is canceled */
+                        CDEBUG(D_DLMTRACE, "Lock %p is canceled\n", lock);
+
+                        ldlm_lock2handle(lock, &lockh);
+                        rc = ldlm_cli_cancel(&lockh);
+
+                        break;
+                case LDLM_CB_CANCELING :
+                        CDEBUG(D_DLMTRACE,
+                               "Lock %p has been canceled, do cleaning\n",
+                               lock);
+
+                        if (ma && ma->ma_som)
+                                OBD_FREE_PTR(ma->ma_som);
+                        if (ma)
+                                OBD_FREE_PTR(ma);
+                        break;
+                default:
+                        LBUG();
+        }
+        RETURN(rc);
+}
+
+static int grouplock_glimpse_ast(struct ldlm_lock *lock, void *data)
+{
+        struct ptlrpc_request *req = data;
+        struct ost_lvb *lvb;
+        int rc;
+        struct md_attr *ma;
+        ENTRY;
+
+        ma = lock->l_ast_data;
+
+        req_capsule_extend(&req->rq_pill, &RQF_LDLM_GL_CALLBACK);
+        req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
+                             sizeof(*lvb));
+        rc = req_capsule_server_pack(&req->rq_pill);
+        if (rc) {
+                CERROR("failed pack reply: %d\n", rc);
+                GOTO(out, rc);
+        }
+
+        lvb = req_capsule_server_get(&req->rq_pill, &RMF_DLM_LVB);
+
+        if ((ma) && (ma->ma_valid & MA_SOM)) {
+                lvb->lvb_size = ma->ma_som->msd_size;
+                lvb->lvb_blocks = ma->ma_som->msd_blocks;
+        } else if ((ma) && (ma->ma_valid & MA_INODE)) {
+                lvb->lvb_size = ma->ma_attr.la_size;
+                lvb->lvb_blocks = ma->ma_attr.la_blocks;
+        } else {
+                lvb->lvb_size = 0;
+                rc = -ELDLM_NO_LOCK_DATA;
+        }
+
+        EXIT;
+out:
+        if (rc == -ELDLM_NO_LOCK_DATA)
+                lustre_pack_reply(req, 1, NULL, NULL);
+
+        req->rq_status = rc;
+        return rc;
+}
+
+int mdd_file_lock(const struct lu_env *env, struct md_object *obj,
+                  struct lov_mds_md *lmm, struct ldlm_extent *extent,
+                  struct lustre_handle *lockh)
+{
+        struct ldlm_enqueue_info einfo = { 0 };
+        struct obd_info oinfo = { { { 0 } } };
+        struct obd_device *obd;
+        struct obd_export *lov_exp;
+        struct lov_stripe_md *lsm = NULL;
+        struct md_attr *ma = NULL;
+        int rc;
+        ENTRY;
+
+        obd = mdo2mdd(obj)->mdd_obd_dev;
+        lov_exp = obd->u.mds.mds_lov_exp;
+
+        obd_unpackmd(lov_exp, &lsm, lmm,
+                     lov_mds_md_size(lmm->lmm_stripe_count, lmm->lmm_magic));
+
+        OBD_ALLOC_PTR(ma);
+        if (ma == NULL)
+                GOTO(out, rc = -ENOMEM);
+
+        OBD_ALLOC_PTR(ma->ma_som);
+        if (ma->ma_som == NULL)
+                GOTO(out, rc = -ENOMEM);
+
+        ma->ma_need = MA_SOM | MA_INODE;
+        mo_attr_get(env, obj, ma);
+
+        einfo.ei_type = LDLM_EXTENT;
+        einfo.ei_mode = LCK_GROUP;
+        einfo.ei_cb_bl = grouplock_blocking_ast;
+        einfo.ei_cb_cp = ldlm_completion_ast;
+        einfo.ei_cb_gl = grouplock_glimpse_ast;
+
+        if (ma->ma_valid & (MA_SOM | MA_INODE))
+                einfo.ei_cbdata = ma;
+        else
+                einfo.ei_cbdata = NULL;
+
+        memset(&oinfo.oi_policy, 0, sizeof(oinfo.oi_policy));
+        oinfo.oi_policy.l_extent = *extent;
+        oinfo.oi_lockh = lockh;
+        oinfo.oi_md = lsm;
+        oinfo.oi_flags = 0;
+
+        rc = obd_enqueue(lov_exp, &oinfo, &einfo, NULL);
+        /* ei_cbdata is used as a free flag at exit */
+        if (rc)
+                einfo.ei_cbdata = NULL;
+
+        obd_unpackmd(lov_exp, &lsm, NULL, 0);
+
+out:
+        /* ma is freed if not used as callback data */
+        if ((einfo.ei_cbdata == NULL) && ma && ma->ma_som)
+                OBD_FREE_PTR(ma->ma_som);
+        if ((einfo.ei_cbdata == NULL) && ma)
+                OBD_FREE_PTR(ma);
+
+        RETURN(rc);
+}
+
+int mdd_file_unlock(const struct lu_env *env, struct md_object *obj,
+                    struct lov_mds_md *lmm, struct lustre_handle *lockh)
+{
+        struct obd_device *obd;
+        struct obd_export *lov_exp;
+        struct lov_stripe_md *lsm = NULL;
+        int rc;
+        ENTRY;
+
+        LASSERT(lustre_handle_is_used(lockh));
+
+        obd = mdo2mdd(obj)->mdd_obd_dev;
+        lov_exp = obd->u.mds.mds_lov_exp;
+
+        obd_unpackmd(lov_exp, &lsm, lmm,
+                     lov_mds_md_size(lmm->lmm_stripe_count, lmm->lmm_magic));
+
+        rc = obd_cancel(lov_exp, lsm, LCK_GROUP, lockh);
+
+        obd_unpackmd(lov_exp, &lsm, NULL, 0);
+
+        RETURN(rc);
+}