From 973dbcbbd9b88976187d72cd6887a93d006871ba Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Thu, 28 Aug 2014 19:42:45 +0200 Subject: [PATCH] staging: lustre: obdech: remove unused file This file contains unresolved references and is not mentioned in the Makefile. Signed-off-by: Julia Lawall Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lustre/obdecho/echo.c | 672 ------------------- 1 file changed, 672 deletions(-) delete mode 100644 drivers/staging/lustre/lustre/obdecho/echo.c diff --git a/drivers/staging/lustre/lustre/obdecho/echo.c b/drivers/staging/lustre/lustre/obdecho/echo.c deleted file mode 100644 index 3d0686d8d25a..000000000000 --- a/drivers/staging/lustre/lustre/obdecho/echo.c +++ /dev/null @@ -1,672 +0,0 @@ -/* - * 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 (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2010, 2012, Intel Corporation. - */ -/* - * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. - * - * lustre/obdecho/echo.c - * - * Author: Peter Braam - * Author: Andreas Dilger - */ - -#define DEBUG_SUBSYSTEM S_ECHO - -#include "../include/obd_support.h" -#include "../include/obd_class.h" -#include "../include/lustre_debug.h" -#include "../include/lustre_dlm.h" -#include "../include/lprocfs_status.h" - -#include "echo_internal.h" - -/* The echo objid needs to be below 2^32, because regular FID numbers are - * limited to 2^32 objects in f_oid for the FID_SEQ_ECHO range. b=23335 */ -#define ECHO_INIT_OID 0x10000000ULL -#define ECHO_HANDLE_MAGIC 0xabcd0123fedc9876ULL - -#define ECHO_PERSISTENT_PAGES (ECHO_PERSISTENT_SIZE >> PAGE_CACHE_SHIFT) -static struct page *echo_persistent_pages[ECHO_PERSISTENT_PAGES]; - -enum { - LPROC_ECHO_READ_BYTES = 1, - LPROC_ECHO_WRITE_BYTES = 2, - LPROC_ECHO_LAST = LPROC_ECHO_WRITE_BYTES +1 -}; - -static int echo_connect(const struct lu_env *env, - struct obd_export **exp, struct obd_device *obd, - struct obd_uuid *cluuid, struct obd_connect_data *data, - void *localdata) -{ - struct lustre_handle conn = { 0 }; - int rc; - - data->ocd_connect_flags &= ECHO_CONNECT_SUPPORTED; - rc = class_connect(&conn, obd, cluuid); - if (rc) { - CERROR("can't connect %d\n", rc); - return rc; - } - *exp = class_conn2export(&conn); - - return 0; -} - -static int echo_disconnect(struct obd_export *exp) -{ - LASSERT (exp != NULL); - - return server_disconnect_export(exp); -} - -static int echo_init_export(struct obd_export *exp) -{ - return ldlm_init_export(exp); -} - -static int echo_destroy_export(struct obd_export *exp) -{ - target_destroy_export(exp); - ldlm_destroy_export(exp); - - return 0; -} - - static __u64 echo_next_id(struct obd_device *obddev) -{ - u64 id; - - spin_lock(&obddev->u.echo.eo_lock); - id = ++obddev->u.echo.eo_lastino; - spin_unlock(&obddev->u.echo.eo_lock); - - return id; -} - -static int echo_create(const struct lu_env *env, struct obd_export *exp, - struct obdo *oa, struct lov_stripe_md **ea, - struct obd_trans_info *oti) -{ - struct obd_device *obd = class_exp2obd(exp); - - if (!obd) { - CERROR("invalid client cookie %#llx\n", - exp->exp_handle.h_cookie); - return -EINVAL; - } - - if (!(oa->o_mode & S_IFMT)) { - CERROR("echo obd: no type!\n"); - return -ENOENT; - } - - if (!(oa->o_valid & OBD_MD_FLTYPE)) { - CERROR("invalid o_valid %#llx\n", oa->o_valid); - return -EINVAL; - } - - ostid_set_seq_echo(&oa->o_oi); - ostid_set_id(&oa->o_oi, echo_next_id(obd)); - oa->o_valid = OBD_MD_FLID; - - return 0; -} - -static int echo_destroy(const struct lu_env *env, struct obd_export *exp, - struct obdo *oa, struct lov_stripe_md *ea, - struct obd_trans_info *oti, struct obd_export *md_exp, - void *capa) -{ - struct obd_device *obd = class_exp2obd(exp); - - if (!obd) { - CERROR("invalid client cookie %#llx\n", - exp->exp_handle.h_cookie); - return -EINVAL; - } - - if (!(oa->o_valid & OBD_MD_FLID)) { - CERROR("obdo missing FLID valid flag: %#llx\n", oa->o_valid); - return -EINVAL; - } - - if (ostid_id(&oa->o_oi) > obd->u.echo.eo_lastino || - ostid_id(&oa->o_oi) < ECHO_INIT_OID) { - CERROR("bad destroy objid: "DOSTID"\n", POSTID(&oa->o_oi)); - return -EINVAL; - } - - return 0; -} - -static int echo_getattr(const struct lu_env *env, struct obd_export *exp, - struct obd_info *oinfo) -{ - struct obd_device *obd = class_exp2obd(exp); - u64 id = ostid_id(&oinfo->oi_oa->o_oi); - - if (!obd) { - CERROR("invalid client cookie %#llx\n", - exp->exp_handle.h_cookie); - return -EINVAL; - } - - if (!(oinfo->oi_oa->o_valid & OBD_MD_FLID)) { - CERROR("obdo missing FLID valid flag: %#llx\n", - oinfo->oi_oa->o_valid); - return -EINVAL; - } - - obdo_cpy_md(oinfo->oi_oa, &obd->u.echo.eo_oa, oinfo->oi_oa->o_valid); - ostid_set_seq_echo(&oinfo->oi_oa->o_oi); - ostid_set_id(&oinfo->oi_oa->o_oi, id); - - return 0; -} - -static int echo_setattr(const struct lu_env *env, struct obd_export *exp, - struct obd_info *oinfo, struct obd_trans_info *oti) -{ - struct obd_device *obd = class_exp2obd(exp); - - if (!obd) { - CERROR("invalid client cookie %#llx\n", - exp->exp_handle.h_cookie); - return -EINVAL; - } - - if (!(oinfo->oi_oa->o_valid & OBD_MD_FLID)) { - CERROR("obdo missing FLID valid flag: %#llx\n", - oinfo->oi_oa->o_valid); - return -EINVAL; - } - - memcpy(&obd->u.echo.eo_oa, oinfo->oi_oa, sizeof(*oinfo->oi_oa)); - - if (ostid_id(&oinfo->oi_oa->o_oi) & 4) { - /* Save lock to force ACKed reply */ - ldlm_lock_addref (&obd->u.echo.eo_nl_lock, LCK_NL); - oti->oti_ack_locks[0].mode = LCK_NL; - oti->oti_ack_locks[0].lock = obd->u.echo.eo_nl_lock; - } - - return 0; -} - -static void -echo_page_debug_setup(struct page *page, int rw, u64 id, - __u64 offset, int len) -{ - int page_offset = offset & ~CFS_PAGE_MASK; - char *addr = ((char *)kmap(page)) + page_offset; - - if (len % OBD_ECHO_BLOCK_SIZE != 0) - CERROR("Unexpected block size %d\n", len); - - while (len > 0) { - if (rw & OBD_BRW_READ) - block_debug_setup(addr, OBD_ECHO_BLOCK_SIZE, - offset, id); - else - block_debug_setup(addr, OBD_ECHO_BLOCK_SIZE, - 0xecc0ecc0ecc0ecc0ULL, - 0xecc0ecc0ecc0ecc0ULL); - - addr += OBD_ECHO_BLOCK_SIZE; - offset += OBD_ECHO_BLOCK_SIZE; - len -= OBD_ECHO_BLOCK_SIZE; - } - - kunmap(page); -} - -static int -echo_page_debug_check(struct page *page, u64 id, - __u64 offset, int len) -{ - int page_offset = offset & ~CFS_PAGE_MASK; - char *addr = ((char *)kmap(page)) + page_offset; - int rc = 0; - int rc2; - - if (len % OBD_ECHO_BLOCK_SIZE != 0) - CERROR("Unexpected block size %d\n", len); - - while (len > 0) { - rc2 = block_debug_check("echo", addr, OBD_ECHO_BLOCK_SIZE, - offset, id); - - if (rc2 != 0 && rc == 0) - rc = rc2; - - addr += OBD_ECHO_BLOCK_SIZE; - offset += OBD_ECHO_BLOCK_SIZE; - len -= OBD_ECHO_BLOCK_SIZE; - } - - kunmap(page); - - return rc; -} - -/* This allows us to verify that desc_private is passed unmolested */ -#define DESC_PRIV 0x10293847 - -static int echo_map_nb_to_lb(struct obdo *oa, struct obd_ioobj *obj, - struct niobuf_remote *nb, int *pages, - struct niobuf_local *lb, int cmd, int *left) -{ - int gfp_mask = (ostid_id(&obj->ioo_oid) & 1) ? - GFP_HIGHUSER : GFP_IOFS; - int ispersistent = ostid_id(&obj->ioo_oid) == ECHO_PERSISTENT_OBJID; - int debug_setup = (!ispersistent && - (oa->o_valid & OBD_MD_FLFLAGS) != 0 && - (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0); - struct niobuf_local *res = lb; - u64 offset = nb->offset; - int len = nb->len; - - while (len > 0) { - int plen = PAGE_CACHE_SIZE - (offset & (PAGE_CACHE_SIZE-1)); - if (len < plen) - plen = len; - - /* check for local buf overflow */ - if (*left == 0) - return -EINVAL; - - res->lnb_file_offset = offset; - res->len = plen; - LASSERT((res->lnb_file_offset & ~CFS_PAGE_MASK) + res->len <= - PAGE_CACHE_SIZE); - - if (ispersistent && - ((res->lnb_file_offset >> PAGE_CACHE_SHIFT) < - ECHO_PERSISTENT_PAGES)) { - res->page = - echo_persistent_pages[res->lnb_file_offset >> - PAGE_CACHE_SHIFT]; - /* Take extra ref so __free_pages() can be called OK */ - get_page (res->page); - } else { - OBD_PAGE_ALLOC(res->page, gfp_mask); - if (res->page == NULL) { - CERROR("can't get page for id " DOSTID"\n", - POSTID(&obj->ioo_oid)); - return -ENOMEM; - } - } - - CDEBUG(D_PAGE, "$$$$ get page %p @ %llu for %d\n", - res->page, res->lnb_file_offset, res->len); - - if (cmd & OBD_BRW_READ) - res->rc = res->len; - - if (debug_setup) - echo_page_debug_setup(res->page, cmd, - ostid_id(&obj->ioo_oid), - res->lnb_file_offset, res->len); - - offset += plen; - len -= plen; - res++; - - (*left)--; - (*pages)++; - } - - return 0; -} - -static int echo_finalize_lb(struct obdo *oa, struct obd_ioobj *obj, - struct niobuf_remote *rb, int *pgs, - struct niobuf_local *lb, int verify) -{ - struct niobuf_local *res = lb; - u64 start = rb->offset >> PAGE_CACHE_SHIFT; - u64 end = (rb->offset + rb->len + PAGE_CACHE_SIZE - 1) >> - PAGE_CACHE_SHIFT; - int count = (int)(end - start); - int rc = 0; - int i; - - for (i = 0; i < count; i++, (*pgs) ++, res++) { - struct page *page = res->page; - void *addr; - - if (page == NULL) { - CERROR("null page objid %llu:%p, buf %d/%d\n", - ostid_id(&obj->ioo_oid), page, i, - obj->ioo_bufcnt); - return -EFAULT; - } - - addr = kmap(page); - - CDEBUG(D_PAGE, "$$$$ use page %p, addr %p@%llu\n", - res->page, addr, res->lnb_file_offset); - - if (verify) { - int vrc = echo_page_debug_check(page, - ostid_id(&obj->ioo_oid), - res->lnb_file_offset, - res->len); - /* check all the pages always */ - if (vrc != 0 && rc == 0) - rc = vrc; - } - - kunmap(page); - /* NB see comment above regarding persistent pages */ - OBD_PAGE_FREE(page); - } - - return rc; -} - -static int echo_preprw(const struct lu_env *env, int cmd, - struct obd_export *export, struct obdo *oa, - int objcount, struct obd_ioobj *obj, - struct niobuf_remote *nb, int *pages, - struct niobuf_local *res, struct obd_trans_info *oti, - struct lustre_capa *unused) -{ - struct obd_device *obd; - int tot_bytes = 0; - int rc = 0; - int i, left; - - obd = export->exp_obd; - if (obd == NULL) - return -EINVAL; - - /* Temp fix to stop falling foul of osc_announce_cached() */ - oa->o_valid &= ~(OBD_MD_FLBLOCKS | OBD_MD_FLGRANT); - - memset(res, 0, sizeof(*res) * *pages); - - CDEBUG(D_PAGE, "%s %d obdos with %d IOs\n", - cmd == OBD_BRW_READ ? "reading" : "writing", objcount, *pages); - - if (oti) - oti->oti_handle = (void *)DESC_PRIV; - - left = *pages; - *pages = 0; - - for (i = 0; i < objcount; i++, obj++) { - int j; - - for (j = 0 ; j < obj->ioo_bufcnt ; j++, nb++) { - - rc = echo_map_nb_to_lb(oa, obj, nb, pages, - res + *pages, cmd, &left); - if (rc) - GOTO(preprw_cleanup, rc); - - tot_bytes += nb->len; - } - } - - atomic_add(*pages, &obd->u.echo.eo_prep); - - if (cmd & OBD_BRW_READ) - lprocfs_counter_add(obd->obd_stats, LPROC_ECHO_READ_BYTES, - tot_bytes); - else - lprocfs_counter_add(obd->obd_stats, LPROC_ECHO_WRITE_BYTES, - tot_bytes); - - CDEBUG(D_PAGE, "%d pages allocated after prep\n", - atomic_read(&obd->u.echo.eo_prep)); - - return 0; - -preprw_cleanup: - /* It is possible that we would rather handle errors by allow - * any already-set-up pages to complete, rather than tearing them - * all down again. I believe that this is what the in-kernel - * prep/commit operations do. - */ - CERROR("cleaning up %u pages (%d obdos)\n", *pages, objcount); - for (i = 0; i < *pages; i++) { - kunmap(res[i].page); - /* NB if this is a persistent page, __free_pages will just - * lose the extra ref gained above */ - OBD_PAGE_FREE(res[i].page); - res[i].page = NULL; - atomic_dec(&obd->u.echo.eo_prep); - } - - 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; -} -- 2.39.5