fix ost additional

Branch HEAD
b=14951
i=umka

lustre/lclient/Makefile.am

-EXTRA_DIST=glimpse.c lcommon_cl.c
+EXTRA_DIST=glimpse.c lcommon_cl.c lcommon_misc.c

lustre/lclient/lcommon_misc.c

+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * cl code shared between vvp and liblustre (and other Lustre clients in the
+ * future).
+ *
+ */
+#include <obd_class.h>
+#include <obd_support.h>
+#include <obd.h>
+
+#include <lustre_lite.h>
+
+
+/* Initialize the default and maximum LOV EA and cookie sizes.  This allows
+ * us to make MDS RPCs with large enough reply buffers to hold the
+ * maximum-sized (= maximum striped) EA and cookie without having to
+ * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
+int cl_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
+{
+        struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC_V3 };
+        __u32 valsize = sizeof(struct lov_desc);
+        int rc, easize, def_easize, cookiesize;
+        struct lov_desc desc;
+        __u32 stripes;
+        ENTRY;
+
+        rc = obd_get_info(dt_exp, sizeof(KEY_LOVDESC), KEY_LOVDESC,
+                          &valsize, &desc, NULL);
+        if (rc)
+                RETURN(rc);
+
+        stripes = min(desc.ld_tgt_count, (__u32)LOV_MAX_STRIPE_COUNT);
+        lsm.lsm_stripe_count = stripes;
+        easize = obd_size_diskmd(dt_exp, &lsm);
+
+        lsm.lsm_stripe_count = desc.ld_default_stripe_count;
+        def_easize = obd_size_diskmd(dt_exp, &lsm);
+
+        cookiesize = stripes * sizeof(struct llog_cookie);
+
+        CDEBUG(D_HA, "updating max_mdsize/max_cookiesize: %d/%d\n",
+               easize, cookiesize);
+
+        rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize);
+        RETURN(rc);
+}
+
+/**
+ * This function is used as an upcall-callback hooked by liblustre and llite
+ * clients into obd_notify() listeners chain to handle notifications about
+ * change of import connect_flags. See llu_fsswop_mount() and
+ * lustre_common_fill_super().
+ */
+int cl_ocd_update(struct obd_device *host,
+                  struct obd_device *watched,
+                  enum obd_notify_event ev, void *owner)
+{
+        struct lustre_client_ocd *lco;
+        struct client_obd        *cli;
+        __u64 flags;
+        int   result;
+
+        ENTRY;
+        if (!strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) {
+                cli = &watched->u.cli;
+                lco = owner;
+                flags = cli->cl_import->imp_connect_data.ocd_connect_flags;
+                CDEBUG(D_SUPER, "Changing connect_flags: "LPX64" -> "LPX64"\n",
+                       lco->lco_flags, flags);
+                spin_lock(&lco->lco_lock);
+                lco->lco_flags &= flags;
+                /* for each osc event update ea size */
+                if (lco->lco_dt_exp)
+                        cl_init_ea_size(lco->lco_md_exp, lco->lco_dt_exp);
+
+                spin_unlock(&lco->lco_lock);
+                result = 0;
+        } else {
+                CERROR("unexpected notification from %s %s!\n",
+                       watched->obd_type->typ_name,
+                       watched->obd_name);
+                result = -EINVAL;
+        }
+        RETURN(result);
+}