staging: lustre: obdech: remove unused file
This file contains unresolved references and is not mentioned in the Makefile. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Julia Lawall
Greg Kroah-Hartman
parent
d5fdc20784
commit
973dbcbbd9
1 changed files with 0 additions and 672 deletions
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@ -1,672 +0,0 @@
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/*
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* GPL HEADER START
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 only,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License version 2 for more details (a copy is included
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* in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; If not, see
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* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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* GPL HEADER END
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*/
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/*
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* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
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* Use is subject to license terms.
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*
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* Copyright (c) 2010, 2012, Intel Corporation.
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*/
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/*
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* This file is part of Lustre, http://www.lustre.org/
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* Lustre is a trademark of Sun Microsystems, Inc.
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*
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* lustre/obdecho/echo.c
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*
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* Author: Peter Braam <braam@clusterfs.com>
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* Author: Andreas Dilger <adilger@clusterfs.com>
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*/
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#define DEBUG_SUBSYSTEM S_ECHO
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#include "../include/obd_support.h"
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#include "../include/obd_class.h"
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#include "../include/lustre_debug.h"
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#include "../include/lustre_dlm.h"
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#include "../include/lprocfs_status.h"
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#include "echo_internal.h"
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/* The echo objid needs to be below 2^32, because regular FID numbers are
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* limited to 2^32 objects in f_oid for the FID_SEQ_ECHO range. b=23335 */
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#define ECHO_INIT_OID 0x10000000ULL
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#define ECHO_HANDLE_MAGIC 0xabcd0123fedc9876ULL
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#define ECHO_PERSISTENT_PAGES (ECHO_PERSISTENT_SIZE >> PAGE_CACHE_SHIFT)
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static struct page *echo_persistent_pages[ECHO_PERSISTENT_PAGES];
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enum {
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LPROC_ECHO_READ_BYTES = 1,
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LPROC_ECHO_WRITE_BYTES = 2,
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LPROC_ECHO_LAST = LPROC_ECHO_WRITE_BYTES +1
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};
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static int echo_connect(const struct lu_env *env,
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struct obd_export **exp, struct obd_device *obd,
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struct obd_uuid *cluuid, struct obd_connect_data *data,
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void *localdata)
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{
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struct lustre_handle conn = { 0 };
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int rc;
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data->ocd_connect_flags &= ECHO_CONNECT_SUPPORTED;
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rc = class_connect(&conn, obd, cluuid);
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if (rc) {
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CERROR("can't connect %d\n", rc);
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return rc;
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}
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*exp = class_conn2export(&conn);
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return 0;
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}
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static int echo_disconnect(struct obd_export *exp)
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{
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LASSERT (exp != NULL);
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return server_disconnect_export(exp);
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}
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static int echo_init_export(struct obd_export *exp)
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{
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return ldlm_init_export(exp);
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}
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static int echo_destroy_export(struct obd_export *exp)
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{
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target_destroy_export(exp);
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ldlm_destroy_export(exp);
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return 0;
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}
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static __u64 echo_next_id(struct obd_device *obddev)
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{
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u64 id;
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spin_lock(&obddev->u.echo.eo_lock);
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id = ++obddev->u.echo.eo_lastino;
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spin_unlock(&obddev->u.echo.eo_lock);
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return id;
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}
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static int echo_create(const struct lu_env *env, struct obd_export *exp,
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struct obdo *oa, struct lov_stripe_md **ea,
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struct obd_trans_info *oti)
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{
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struct obd_device *obd = class_exp2obd(exp);
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if (!obd) {
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CERROR("invalid client cookie %#llx\n",
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exp->exp_handle.h_cookie);
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return -EINVAL;
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}
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if (!(oa->o_mode & S_IFMT)) {
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CERROR("echo obd: no type!\n");
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return -ENOENT;
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}
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if (!(oa->o_valid & OBD_MD_FLTYPE)) {
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CERROR("invalid o_valid %#llx\n", oa->o_valid);
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return -EINVAL;
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}
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ostid_set_seq_echo(&oa->o_oi);
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ostid_set_id(&oa->o_oi, echo_next_id(obd));
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oa->o_valid = OBD_MD_FLID;
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return 0;
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}
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static int echo_destroy(const struct lu_env *env, struct obd_export *exp,
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struct obdo *oa, struct lov_stripe_md *ea,
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struct obd_trans_info *oti, struct obd_export *md_exp,
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void *capa)
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{
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struct obd_device *obd = class_exp2obd(exp);
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if (!obd) {
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CERROR("invalid client cookie %#llx\n",
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exp->exp_handle.h_cookie);
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return -EINVAL;
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}
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if (!(oa->o_valid & OBD_MD_FLID)) {
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CERROR("obdo missing FLID valid flag: %#llx\n", oa->o_valid);
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return -EINVAL;
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}
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if (ostid_id(&oa->o_oi) > obd->u.echo.eo_lastino ||
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ostid_id(&oa->o_oi) < ECHO_INIT_OID) {
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CERROR("bad destroy objid: "DOSTID"\n", POSTID(&oa->o_oi));
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return -EINVAL;
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}
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return 0;
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}
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static int echo_getattr(const struct lu_env *env, struct obd_export *exp,
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struct obd_info *oinfo)
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{
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struct obd_device *obd = class_exp2obd(exp);
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u64 id = ostid_id(&oinfo->oi_oa->o_oi);
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if (!obd) {
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CERROR("invalid client cookie %#llx\n",
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exp->exp_handle.h_cookie);
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return -EINVAL;
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}
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if (!(oinfo->oi_oa->o_valid & OBD_MD_FLID)) {
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CERROR("obdo missing FLID valid flag: %#llx\n",
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oinfo->oi_oa->o_valid);
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return -EINVAL;
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}
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obdo_cpy_md(oinfo->oi_oa, &obd->u.echo.eo_oa, oinfo->oi_oa->o_valid);
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ostid_set_seq_echo(&oinfo->oi_oa->o_oi);
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ostid_set_id(&oinfo->oi_oa->o_oi, id);
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return 0;
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}
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static int echo_setattr(const struct lu_env *env, struct obd_export *exp,
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struct obd_info *oinfo, struct obd_trans_info *oti)
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{
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struct obd_device *obd = class_exp2obd(exp);
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if (!obd) {
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CERROR("invalid client cookie %#llx\n",
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exp->exp_handle.h_cookie);
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return -EINVAL;
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}
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if (!(oinfo->oi_oa->o_valid & OBD_MD_FLID)) {
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CERROR("obdo missing FLID valid flag: %#llx\n",
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oinfo->oi_oa->o_valid);
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return -EINVAL;
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}
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memcpy(&obd->u.echo.eo_oa, oinfo->oi_oa, sizeof(*oinfo->oi_oa));
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if (ostid_id(&oinfo->oi_oa->o_oi) & 4) {
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/* Save lock to force ACKed reply */
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ldlm_lock_addref (&obd->u.echo.eo_nl_lock, LCK_NL);
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oti->oti_ack_locks[0].mode = LCK_NL;
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oti->oti_ack_locks[0].lock = obd->u.echo.eo_nl_lock;
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}
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return 0;
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}
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static void
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echo_page_debug_setup(struct page *page, int rw, u64 id,
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__u64 offset, int len)
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{
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int page_offset = offset & ~CFS_PAGE_MASK;
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char *addr = ((char *)kmap(page)) + page_offset;
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if (len % OBD_ECHO_BLOCK_SIZE != 0)
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CERROR("Unexpected block size %d\n", len);
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while (len > 0) {
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if (rw & OBD_BRW_READ)
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block_debug_setup(addr, OBD_ECHO_BLOCK_SIZE,
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offset, id);
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else
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block_debug_setup(addr, OBD_ECHO_BLOCK_SIZE,
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0xecc0ecc0ecc0ecc0ULL,
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0xecc0ecc0ecc0ecc0ULL);
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addr += OBD_ECHO_BLOCK_SIZE;
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offset += OBD_ECHO_BLOCK_SIZE;
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len -= OBD_ECHO_BLOCK_SIZE;
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}
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kunmap(page);
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}
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static int
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echo_page_debug_check(struct page *page, u64 id,
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__u64 offset, int len)
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{
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int page_offset = offset & ~CFS_PAGE_MASK;
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char *addr = ((char *)kmap(page)) + page_offset;
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int rc = 0;
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int rc2;
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if (len % OBD_ECHO_BLOCK_SIZE != 0)
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CERROR("Unexpected block size %d\n", len);
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while (len > 0) {
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rc2 = block_debug_check("echo", addr, OBD_ECHO_BLOCK_SIZE,
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offset, id);
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if (rc2 != 0 && rc == 0)
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rc = rc2;
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addr += OBD_ECHO_BLOCK_SIZE;
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offset += OBD_ECHO_BLOCK_SIZE;
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len -= OBD_ECHO_BLOCK_SIZE;
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}
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kunmap(page);
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return rc;
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}
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/* This allows us to verify that desc_private is passed unmolested */
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#define DESC_PRIV 0x10293847
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static int echo_map_nb_to_lb(struct obdo *oa, struct obd_ioobj *obj,
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struct niobuf_remote *nb, int *pages,
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struct niobuf_local *lb, int cmd, int *left)
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{
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int gfp_mask = (ostid_id(&obj->ioo_oid) & 1) ?
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GFP_HIGHUSER : GFP_IOFS;
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int ispersistent = ostid_id(&obj->ioo_oid) == ECHO_PERSISTENT_OBJID;
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int debug_setup = (!ispersistent &&
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(oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
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(oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
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struct niobuf_local *res = lb;
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u64 offset = nb->offset;
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int len = nb->len;
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while (len > 0) {
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int plen = PAGE_CACHE_SIZE - (offset & (PAGE_CACHE_SIZE-1));
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if (len < plen)
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plen = len;
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/* check for local buf overflow */
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if (*left == 0)
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return -EINVAL;
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res->lnb_file_offset = offset;
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res->len = plen;
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LASSERT((res->lnb_file_offset & ~CFS_PAGE_MASK) + res->len <=
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PAGE_CACHE_SIZE);
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if (ispersistent &&
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((res->lnb_file_offset >> PAGE_CACHE_SHIFT) <
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ECHO_PERSISTENT_PAGES)) {
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res->page =
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echo_persistent_pages[res->lnb_file_offset >>
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PAGE_CACHE_SHIFT];
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/* Take extra ref so __free_pages() can be called OK */
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get_page (res->page);
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} else {
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OBD_PAGE_ALLOC(res->page, gfp_mask);
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if (res->page == NULL) {
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CERROR("can't get page for id " DOSTID"\n",
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POSTID(&obj->ioo_oid));
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return -ENOMEM;
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}
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}
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CDEBUG(D_PAGE, "$$$$ get page %p @ %llu for %d\n",
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res->page, res->lnb_file_offset, res->len);
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if (cmd & OBD_BRW_READ)
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res->rc = res->len;
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if (debug_setup)
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echo_page_debug_setup(res->page, cmd,
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ostid_id(&obj->ioo_oid),
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res->lnb_file_offset, res->len);
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offset += plen;
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len -= plen;
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res++;
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(*left)--;
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(*pages)++;
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}
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return 0;
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}
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static int echo_finalize_lb(struct obdo *oa, struct obd_ioobj *obj,
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struct niobuf_remote *rb, int *pgs,
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struct niobuf_local *lb, int verify)
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{
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struct niobuf_local *res = lb;
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u64 start = rb->offset >> PAGE_CACHE_SHIFT;
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u64 end = (rb->offset + rb->len + PAGE_CACHE_SIZE - 1) >>
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PAGE_CACHE_SHIFT;
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int count = (int)(end - start);
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int rc = 0;
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int i;
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for (i = 0; i < count; i++, (*pgs) ++, res++) {
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struct page *page = res->page;
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void *addr;
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if (page == NULL) {
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CERROR("null page objid %llu:%p, buf %d/%d\n",
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ostid_id(&obj->ioo_oid), page, i,
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obj->ioo_bufcnt);
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return -EFAULT;
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}
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addr = kmap(page);
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CDEBUG(D_PAGE, "$$$$ use page %p, addr %p@%llu\n",
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res->page, addr, res->lnb_file_offset);
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if (verify) {
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int vrc = echo_page_debug_check(page,
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ostid_id(&obj->ioo_oid),
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res->lnb_file_offset,
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res->len);
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/* check all the pages always */
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if (vrc != 0 && rc == 0)
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rc = vrc;
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}
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kunmap(page);
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/* NB see comment above regarding persistent pages */
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OBD_PAGE_FREE(page);
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}
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return rc;
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}
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static int echo_preprw(const struct lu_env *env, int cmd,
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struct obd_export *export, struct obdo *oa,
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int objcount, struct obd_ioobj *obj,
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struct niobuf_remote *nb, int *pages,
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struct niobuf_local *res, struct obd_trans_info *oti,
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struct lustre_capa *unused)
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{
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struct obd_device *obd;
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int tot_bytes = 0;
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int rc = 0;
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int i, left;
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obd = export->exp_obd;
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if (obd == NULL)
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return -EINVAL;
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/* Temp fix to stop falling foul of osc_announce_cached() */
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oa->o_valid &= ~(OBD_MD_FLBLOCKS | OBD_MD_FLGRANT);
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memset(res, 0, sizeof(*res) * *pages);
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CDEBUG(D_PAGE, "%s %d obdos with %d IOs\n",
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cmd == OBD_BRW_READ ? "reading" : "writing", objcount, *pages);
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if (oti)
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oti->oti_handle = (void *)DESC_PRIV;
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left = *pages;
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*pages = 0;
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for (i = 0; i < objcount; i++, obj++) {
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int j;
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for (j = 0 ; j < obj->ioo_bufcnt ; j++, nb++) {
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rc = echo_map_nb_to_lb(oa, obj, nb, pages,
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res + *pages, cmd, &left);
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if (rc)
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GOTO(preprw_cleanup, rc);
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tot_bytes += nb->len;
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}
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}
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atomic_add(*pages, &obd->u.echo.eo_prep);
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if (cmd & OBD_BRW_READ)
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lprocfs_counter_add(obd->obd_stats, LPROC_ECHO_READ_BYTES,
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tot_bytes);
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else
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lprocfs_counter_add(obd->obd_stats, LPROC_ECHO_WRITE_BYTES,
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tot_bytes);
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CDEBUG(D_PAGE, "%d pages allocated after prep\n",
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atomic_read(&obd->u.echo.eo_prep));
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return 0;
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preprw_cleanup:
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/* It is possible that we would rather handle errors by allow
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* any already-set-up pages to complete, rather than tearing them
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* all down again. I believe that this is what the in-kernel
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* prep/commit operations do.
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*/
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CERROR("cleaning up %u pages (%d obdos)\n", *pages, objcount);
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for (i = 0; i < *pages; i++) {
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kunmap(res[i].page);
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/* NB if this is a persistent page, __free_pages will just
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* lose the extra ref gained above */
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OBD_PAGE_FREE(res[i].page);
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res[i].page = NULL;
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atomic_dec(&obd->u.echo.eo_prep);
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}
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|
||||
return rc;
|
||||
}
|
||||
|
||||
static int echo_commitrw(const struct lu_env *env, int cmd,
|
||||
struct obd_export *export, struct obdo *oa,
|
||||
int objcount, struct obd_ioobj *obj,
|
||||
struct niobuf_remote *rb, int niocount,
|
||||
struct niobuf_local *res, struct obd_trans_info *oti,
|
||||
int rc)
|
||||
{
|
||||
struct obd_device *obd;
|
||||
int pgs = 0;
|
||||
int i;
|
||||
|
||||
obd = export->exp_obd;
|
||||
if (obd == NULL)
|
||||
return -EINVAL;
|
||||
|
||||
if (rc)
|
||||
GOTO(commitrw_cleanup, rc);
|
||||
|
||||
if ((cmd & OBD_BRW_RWMASK) == OBD_BRW_READ) {
|
||||
CDEBUG(D_PAGE, "reading %d obdos with %d IOs\n",
|
||||
objcount, niocount);
|
||||
} else {
|
||||
CDEBUG(D_PAGE, "writing %d obdos with %d IOs\n",
|
||||
objcount, niocount);
|
||||
}
|
||||
|
||||
if (niocount && res == NULL) {
|
||||
CERROR("NULL res niobuf with niocount %d\n", niocount);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
LASSERT(oti == NULL || oti->oti_handle == (void *)DESC_PRIV);
|
||||
|
||||
for (i = 0; i < objcount; i++, obj++) {
|
||||
int verify = (rc == 0 &&
|
||||
ostid_id(&obj->ioo_oid) != ECHO_PERSISTENT_OBJID &&
|
||||
(oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
|
||||
(oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
|
||||
int j;
|
||||
|
||||
for (j = 0 ; j < obj->ioo_bufcnt ; j++, rb++) {
|
||||
int vrc = echo_finalize_lb(oa, obj, rb, &pgs, &res[pgs],
|
||||
verify);
|
||||
if (vrc == 0)
|
||||
continue;
|
||||
|
||||
if (vrc == -EFAULT)
|
||||
GOTO(commitrw_cleanup, rc = vrc);
|
||||
|
||||
if (rc == 0)
|
||||
rc = vrc;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
atomic_sub(pgs, &obd->u.echo.eo_prep);
|
||||
|
||||
CDEBUG(D_PAGE, "%d pages remain after commit\n",
|
||||
atomic_read(&obd->u.echo.eo_prep));
|
||||
return rc;
|
||||
|
||||
commitrw_cleanup:
|
||||
atomic_sub(pgs, &obd->u.echo.eo_prep);
|
||||
|
||||
CERROR("cleaning up %d pages (%d obdos)\n",
|
||||
niocount - pgs - 1, objcount);
|
||||
|
||||
while (pgs < niocount) {
|
||||
struct page *page = res[pgs++].page;
|
||||
|
||||
if (page == NULL)
|
||||
continue;
|
||||
|
||||
/* NB see comment above regarding persistent pages */
|
||||
OBD_PAGE_FREE(page);
|
||||
atomic_dec(&obd->u.echo.eo_prep);
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int echo_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
|
||||
{
|
||||
struct lprocfs_static_vars lvars;
|
||||
int rc;
|
||||
__u64 lock_flags = 0;
|
||||
struct ldlm_res_id res_id = {.name = {1}};
|
||||
char ns_name[48];
|
||||
|
||||
obd->u.echo.eo_obt.obt_magic = OBT_MAGIC;
|
||||
spin_lock_init(&obd->u.echo.eo_lock);
|
||||
obd->u.echo.eo_lastino = ECHO_INIT_OID;
|
||||
|
||||
sprintf(ns_name, "echotgt-%s", obd->obd_uuid.uuid);
|
||||
obd->obd_namespace = ldlm_namespace_new(obd, ns_name,
|
||||
LDLM_NAMESPACE_SERVER,
|
||||
LDLM_NAMESPACE_MODEST,
|
||||
LDLM_NS_TYPE_OST);
|
||||
if (obd->obd_namespace == NULL) {
|
||||
LBUG();
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id, LDLM_PLAIN,
|
||||
NULL, LCK_NL, &lock_flags, NULL,
|
||||
ldlm_completion_ast, NULL, NULL, 0,
|
||||
LVB_T_NONE, NULL, &obd->u.echo.eo_nl_lock);
|
||||
LASSERT (rc == ELDLM_OK);
|
||||
|
||||
lprocfs_echo_init_vars(&lvars);
|
||||
if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
|
||||
lprocfs_alloc_obd_stats(obd, LPROC_ECHO_LAST) == 0) {
|
||||
lprocfs_counter_init(obd->obd_stats, LPROC_ECHO_READ_BYTES,
|
||||
LPROCFS_CNTR_AVGMINMAX,
|
||||
"read_bytes", "bytes");
|
||||
lprocfs_counter_init(obd->obd_stats, LPROC_ECHO_WRITE_BYTES,
|
||||
LPROCFS_CNTR_AVGMINMAX,
|
||||
"write_bytes", "bytes");
|
||||
}
|
||||
|
||||
ptlrpc_init_client (LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
|
||||
"echo_ldlm_cb_client", &obd->obd_ldlm_client);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int echo_cleanup(struct obd_device *obd)
|
||||
{
|
||||
int leaked;
|
||||
|
||||
lprocfs_obd_cleanup(obd);
|
||||
lprocfs_free_obd_stats(obd);
|
||||
|
||||
ldlm_lock_decref(&obd->u.echo.eo_nl_lock, LCK_NL);
|
||||
|
||||
/* XXX Bug 3413; wait for a bit to ensure the BL callback has
|
||||
* happened before calling ldlm_namespace_free() */
|
||||
set_current_state(TASK_UNINTERRUPTIBLE);
|
||||
schedule_timeout(cfs_time_seconds(1));
|
||||
|
||||
ldlm_namespace_free(obd->obd_namespace, NULL, obd->obd_force);
|
||||
obd->obd_namespace = NULL;
|
||||
|
||||
leaked = atomic_read(&obd->u.echo.eo_prep);
|
||||
if (leaked != 0)
|
||||
CERROR("%d prep/commitrw pages leaked\n", leaked);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
struct obd_ops echo_obd_ops = {
|
||||
.o_owner = THIS_MODULE,
|
||||
.o_connect = echo_connect,
|
||||
.o_disconnect = echo_disconnect,
|
||||
.o_init_export = echo_init_export,
|
||||
.o_destroy_export = echo_destroy_export,
|
||||
.o_create = echo_create,
|
||||
.o_destroy = echo_destroy,
|
||||
.o_getattr = echo_getattr,
|
||||
.o_setattr = echo_setattr,
|
||||
.o_preprw = echo_preprw,
|
||||
.o_commitrw = echo_commitrw,
|
||||
.o_setup = echo_setup,
|
||||
.o_cleanup = echo_cleanup
|
||||
};
|
||||
|
||||
void echo_persistent_pages_fini(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ECHO_PERSISTENT_PAGES; i++)
|
||||
if (echo_persistent_pages[i] != NULL) {
|
||||
OBD_PAGE_FREE(echo_persistent_pages[i]);
|
||||
echo_persistent_pages[i] = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
int echo_persistent_pages_init(void)
|
||||
{
|
||||
struct page *pg;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ECHO_PERSISTENT_PAGES; i++) {
|
||||
int gfp_mask = (i < ECHO_PERSISTENT_PAGES/2) ?
|
||||
GFP_IOFS : GFP_HIGHUSER;
|
||||
|
||||
OBD_PAGE_ALLOC(pg, gfp_mask);
|
||||
if (pg == NULL) {
|
||||
echo_persistent_pages_fini ();
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
memset (kmap (pg), 0, PAGE_CACHE_SIZE);
|
||||
kunmap (pg);
|
||||
|
||||
echo_persistent_pages[i] = pg;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue