diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/mdc/mdc_reint.c')
-rw-r--r-- | drivers/staging/lustre/lustre/mdc/mdc_reint.c | 421 |
1 files changed, 0 insertions, 421 deletions
diff --git a/drivers/staging/lustre/lustre/mdc/mdc_reint.c b/drivers/staging/lustre/lustre/mdc/mdc_reint.c deleted file mode 100644 index e77c00df0693..000000000000 --- a/drivers/staging/lustre/lustre/mdc/mdc_reint.c +++ /dev/null @@ -1,421 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * 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.gnu.org/licenses/gpl-2.0.html - * - * GPL HEADER END - */ -/* - * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2011, 2015, Intel Corporation. - */ -/* - * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. - */ - -#define DEBUG_SUBSYSTEM S_MDC - -# include <linux/module.h> -# include <linux/kernel.h> - -#include <obd_class.h> -#include "mdc_internal.h" -#include <lustre_fid.h> - -/* mdc_setattr does its own semaphore handling */ -static int mdc_reint(struct ptlrpc_request *request, int level) -{ - int rc; - - request->rq_send_state = level; - - mdc_get_mod_rpc_slot(request, NULL); - rc = ptlrpc_queue_wait(request); - mdc_put_mod_rpc_slot(request, NULL); - if (rc) - CDEBUG(D_INFO, "error in handling %d\n", rc); - else if (!req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY)) - rc = -EPROTO; - - return rc; -} - -/* Find and cancel locally locks matched by inode @bits & @mode in the resource - * found by @fid. Found locks are added into @cancel list. Returns the amount of - * locks added to @cancels list. - */ -int mdc_resource_get_unused(struct obd_export *exp, const struct lu_fid *fid, - struct list_head *cancels, enum ldlm_mode mode, - __u64 bits) -{ - struct ldlm_namespace *ns = exp->exp_obd->obd_namespace; - union ldlm_policy_data policy = {}; - struct ldlm_res_id res_id; - struct ldlm_resource *res; - int count; - - /* Return, i.e. cancel nothing, only if ELC is supported (flag in - * export) but disabled through procfs (flag in NS). - * - * This distinguishes from a case when ELC is not supported originally, - * when we still want to cancel locks in advance and just cancel them - * locally, without sending any RPC. - */ - if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns)) - return 0; - - fid_build_reg_res_name(fid, &res_id); - res = ldlm_resource_get(exp->exp_obd->obd_namespace, - NULL, &res_id, 0, 0); - if (IS_ERR(res)) - return 0; - LDLM_RESOURCE_ADDREF(res); - /* Initialize ibits lock policy. */ - policy.l_inodebits.bits = bits; - count = ldlm_cancel_resource_local(res, cancels, &policy, - mode, 0, 0, NULL); - LDLM_RESOURCE_DELREF(res); - ldlm_resource_putref(res); - return count; -} - -int mdc_setattr(struct obd_export *exp, struct md_op_data *op_data, - void *ea, size_t ealen, struct ptlrpc_request **request) -{ - LIST_HEAD(cancels); - struct ptlrpc_request *req; - int count = 0, rc; - __u64 bits; - - bits = MDS_INODELOCK_UPDATE; - if (op_data->op_attr.ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID)) - bits |= MDS_INODELOCK_LOOKUP; - if ((op_data->op_flags & MF_MDC_CANCEL_FID1) && - (fid_is_sane(&op_data->op_fid1))) - count = mdc_resource_get_unused(exp, &op_data->op_fid1, - &cancels, LCK_EX, bits); - req = ptlrpc_request_alloc(class_exp2cliimp(exp), - &RQF_MDS_REINT_SETATTR); - if (!req) { - ldlm_lock_list_put(&cancels, l_bl_ast, count); - return -ENOMEM; - } - req_capsule_set_size(&req->rq_pill, &RMF_MDT_EPOCH, RCL_CLIENT, 0); - req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT, ealen); - req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_CLIENT, 0); - - rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count); - if (rc) { - ptlrpc_request_free(req); - return rc; - } - - if (op_data->op_attr.ia_valid & (ATTR_MTIME | ATTR_CTIME)) - CDEBUG(D_INODE, "setting mtime %ld, ctime %ld\n", - LTIME_S(op_data->op_attr.ia_mtime), - LTIME_S(op_data->op_attr.ia_ctime)); - mdc_setattr_pack(req, op_data, ea, ealen); - - req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, - req->rq_import->imp_connect_data.ocd_max_easize); - ptlrpc_request_set_replen(req); - - rc = mdc_reint(req, LUSTRE_IMP_FULL); - - if (rc == -ERESTARTSYS) - rc = 0; - - *request = req; - - return rc; -} - -int mdc_create(struct obd_export *exp, struct md_op_data *op_data, - const void *data, size_t datalen, umode_t mode, - uid_t uid, gid_t gid, kernel_cap_t cap_effective, - __u64 rdev, struct ptlrpc_request **request) -{ - struct ptlrpc_request *req; - int level, rc; - int count, resends = 0; - struct obd_import *import = exp->exp_obd->u.cli.cl_import; - int generation = import->imp_generation; - LIST_HEAD(cancels); - - /* For case if upper layer did not alloc fid, do it now. */ - if (!fid_is_sane(&op_data->op_fid2)) { - /* - * mdc_fid_alloc() may return errno 1 in case of switch to new - * sequence, handle this. - */ - rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2, op_data); - if (rc < 0) - return rc; - } - -rebuild: - count = 0; - if ((op_data->op_flags & MF_MDC_CANCEL_FID1) && - (fid_is_sane(&op_data->op_fid1))) - count = mdc_resource_get_unused(exp, &op_data->op_fid1, - &cancels, LCK_EX, - MDS_INODELOCK_UPDATE); - - req = ptlrpc_request_alloc(class_exp2cliimp(exp), - &RQF_MDS_REINT_CREATE_ACL); - if (!req) { - ldlm_lock_list_put(&cancels, l_bl_ast, count); - return -ENOMEM; - } - req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, - op_data->op_namelen + 1); - req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT, - data && datalen ? datalen : 0); - - rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count); - if (rc) { - ptlrpc_request_free(req); - return rc; - } - - /* - * mdc_create_pack() fills msg->bufs[1] with name and msg->bufs[2] with - * tgt, for symlinks or lov MD data. - */ - mdc_create_pack(req, op_data, data, datalen, mode, uid, - gid, cap_effective, rdev); - - ptlrpc_request_set_replen(req); - - /* ask ptlrpc not to resend on EINPROGRESS since we have our own retry - * logic here - */ - req->rq_no_retry_einprogress = 1; - - if (resends) { - req->rq_generation_set = 1; - req->rq_import_generation = generation; - req->rq_sent = ktime_get_real_seconds() + resends; - } - level = LUSTRE_IMP_FULL; - resend: - rc = mdc_reint(req, level); - - /* Resend if we were told to. */ - if (rc == -ERESTARTSYS) { - level = LUSTRE_IMP_RECOVER; - goto resend; - } else if (rc == -EINPROGRESS) { - /* Retry create infinitely until succeed or get other - * error code. - */ - ptlrpc_req_finished(req); - resends++; - - CDEBUG(D_HA, "%s: resend:%d create on " DFID "/" DFID "\n", - exp->exp_obd->obd_name, resends, - PFID(&op_data->op_fid1), PFID(&op_data->op_fid2)); - - if (generation == import->imp_generation) { - goto rebuild; - } else { - CDEBUG(D_HA, "resend cross eviction\n"); - return -EIO; - } - } - - *request = req; - return rc; -} - -int mdc_unlink(struct obd_export *exp, struct md_op_data *op_data, - struct ptlrpc_request **request) -{ - LIST_HEAD(cancels); - struct obd_device *obd = class_exp2obd(exp); - struct ptlrpc_request *req = *request; - int count = 0, rc; - - LASSERT(!req); - - if ((op_data->op_flags & MF_MDC_CANCEL_FID1) && - (fid_is_sane(&op_data->op_fid1))) - count = mdc_resource_get_unused(exp, &op_data->op_fid1, - &cancels, LCK_EX, - MDS_INODELOCK_UPDATE); - if ((op_data->op_flags & MF_MDC_CANCEL_FID3) && - (fid_is_sane(&op_data->op_fid3))) - count += mdc_resource_get_unused(exp, &op_data->op_fid3, - &cancels, LCK_EX, - MDS_INODELOCK_FULL); - req = ptlrpc_request_alloc(class_exp2cliimp(exp), - &RQF_MDS_REINT_UNLINK); - if (!req) { - ldlm_lock_list_put(&cancels, l_bl_ast, count); - return -ENOMEM; - } - req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, - op_data->op_namelen + 1); - - rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count); - if (rc) { - ptlrpc_request_free(req); - return rc; - } - - mdc_unlink_pack(req, op_data); - - req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, - obd->u.cli.cl_default_mds_easize); - ptlrpc_request_set_replen(req); - - *request = req; - - rc = mdc_reint(req, LUSTRE_IMP_FULL); - if (rc == -ERESTARTSYS) - rc = 0; - return rc; -} - -int mdc_link(struct obd_export *exp, struct md_op_data *op_data, - struct ptlrpc_request **request) -{ - LIST_HEAD(cancels); - struct ptlrpc_request *req; - int count = 0, rc; - - if ((op_data->op_flags & MF_MDC_CANCEL_FID2) && - (fid_is_sane(&op_data->op_fid2))) - count = mdc_resource_get_unused(exp, &op_data->op_fid2, - &cancels, LCK_EX, - MDS_INODELOCK_UPDATE); - if ((op_data->op_flags & MF_MDC_CANCEL_FID1) && - (fid_is_sane(&op_data->op_fid1))) - count += mdc_resource_get_unused(exp, &op_data->op_fid1, - &cancels, LCK_EX, - MDS_INODELOCK_UPDATE); - - req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_REINT_LINK); - if (!req) { - ldlm_lock_list_put(&cancels, l_bl_ast, count); - return -ENOMEM; - } - req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, - op_data->op_namelen + 1); - - rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count); - if (rc) { - ptlrpc_request_free(req); - return rc; - } - - mdc_link_pack(req, op_data); - ptlrpc_request_set_replen(req); - - rc = mdc_reint(req, LUSTRE_IMP_FULL); - *request = req; - if (rc == -ERESTARTSYS) - rc = 0; - - return rc; -} - -int mdc_rename(struct obd_export *exp, struct md_op_data *op_data, - const char *old, size_t oldlen, const char *new, size_t newlen, - struct ptlrpc_request **request) -{ - LIST_HEAD(cancels); - struct obd_device *obd = exp->exp_obd; - struct ptlrpc_request *req; - int count = 0, rc; - - if ((op_data->op_flags & MF_MDC_CANCEL_FID1) && - (fid_is_sane(&op_data->op_fid1))) - count = mdc_resource_get_unused(exp, &op_data->op_fid1, - &cancels, LCK_EX, - MDS_INODELOCK_UPDATE); - if ((op_data->op_flags & MF_MDC_CANCEL_FID2) && - (fid_is_sane(&op_data->op_fid2))) - count += mdc_resource_get_unused(exp, &op_data->op_fid2, - &cancels, LCK_EX, - MDS_INODELOCK_UPDATE); - if ((op_data->op_flags & MF_MDC_CANCEL_FID3) && - (fid_is_sane(&op_data->op_fid3))) - count += mdc_resource_get_unused(exp, &op_data->op_fid3, - &cancels, LCK_EX, - MDS_INODELOCK_LOOKUP); - if ((op_data->op_flags & MF_MDC_CANCEL_FID4) && - (fid_is_sane(&op_data->op_fid4))) - count += mdc_resource_get_unused(exp, &op_data->op_fid4, - &cancels, LCK_EX, - MDS_INODELOCK_FULL); - - req = ptlrpc_request_alloc(class_exp2cliimp(exp), - op_data->op_cli_flags & CLI_MIGRATE ? - &RQF_MDS_REINT_MIGRATE : &RQF_MDS_REINT_RENAME); - if (!req) { - ldlm_lock_list_put(&cancels, l_bl_ast, count); - return -ENOMEM; - } - - req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, oldlen + 1); - req_capsule_set_size(&req->rq_pill, &RMF_SYMTGT, RCL_CLIENT, - newlen + 1); - - rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count); - if (rc) { - ptlrpc_request_free(req); - return rc; - } - - if (op_data->op_cli_flags & CLI_MIGRATE && op_data->op_data) { - struct md_open_data *mod = op_data->op_data; - - LASSERTF(mod->mod_open_req && - mod->mod_open_req->rq_type != LI_POISON, - "POISONED open %p!\n", mod->mod_open_req); - - DEBUG_REQ(D_HA, mod->mod_open_req, "matched open"); - /* - * We no longer want to preserve this open for replay even - * though the open was committed. b=3632, b=3633 - */ - spin_lock(&mod->mod_open_req->rq_lock); - mod->mod_open_req->rq_replay = 0; - spin_unlock(&mod->mod_open_req->rq_lock); - } - - if (exp_connect_cancelset(exp) && req) - ldlm_cli_cancel_list(&cancels, count, req, 0); - - mdc_rename_pack(req, op_data, old, oldlen, new, newlen); - - req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, - obd->u.cli.cl_default_mds_easize); - ptlrpc_request_set_replen(req); - - rc = mdc_reint(req, LUSTRE_IMP_FULL); - *request = req; - if (rc == -ERESTARTSYS) - rc = 0; - - return rc; -} |