1 files changed, 0 insertions, 517 deletions

diff --git a/drivers/staging/lustre/lustre/lmv/lmv_intent.c b/drivers/staging/lustre/lustre/lmv/lmv_intent.c
deleted file mode 100644
index 1793c9f79b24..000000000000
--- a/drivers/staging/lustre/lustre/lmv/lmv_intent.c
+++ /dev/null
@@ -1,517 +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) 2004, 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_LMV
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/pagemap.h>
-#include <asm/div64.h>
-#include <linux/seq_file.h>
-#include <linux/namei.h>
-#include <lustre_intent.h>
-#include <obd_support.h>
-#include <lustre_lib.h>
-#include <lustre_net.h>
-#include <lustre_dlm.h>
-#include <lustre_mdc.h>
-#include <obd_class.h>
-#include <lprocfs_status.h>
-#include "lmv_internal.h"
-
-static int lmv_intent_remote(struct obd_export *exp, struct lookup_intent *it,
-			     const struct lu_fid *parent_fid,
-			     struct ptlrpc_request **reqp,
-			     ldlm_blocking_callback cb_blocking,
-			     __u64 extra_lock_flags)
-{
-	struct obd_device	*obd = exp->exp_obd;
-	struct lmv_obd		*lmv = &obd->u.lmv;
-	struct ptlrpc_request	*req = NULL;
-	struct lustre_handle	plock;
-	struct md_op_data	*op_data;
-	struct lmv_tgt_desc	*tgt;
-	struct mdt_body		*body;
-	int			pmode;
-	int			rc = 0;
-
-	body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
-	if (!body)
-		return -EPROTO;
-
-	LASSERT((body->mbo_valid & OBD_MD_MDS));
-
-	/*
-	 * Unfortunately, we have to lie to MDC/MDS to retrieve
-	 * attributes llite needs and provideproper locking.
-	 */
-	if (it->it_op & IT_LOOKUP)
-		it->it_op = IT_GETATTR;
-
-	/*
-	 * We got LOOKUP lock, but we really need attrs.
-	 */
-	pmode = it->it_lock_mode;
-	if (pmode) {
-		plock.cookie = it->it_lock_handle;
-		it->it_lock_mode = 0;
-		it->it_request = NULL;
-	}
-
-	LASSERT(fid_is_sane(&body->mbo_fid1));
-
-	tgt = lmv_find_target(lmv, &body->mbo_fid1);
-	if (IS_ERR(tgt)) {
-		rc = PTR_ERR(tgt);
-		goto out;
-	}
-
-	op_data = kzalloc(sizeof(*op_data), GFP_NOFS);
-	if (!op_data) {
-		rc = -ENOMEM;
-		goto out;
-	}
-
-	op_data->op_fid1 = body->mbo_fid1;
-	/* Sent the parent FID to the remote MDT */
-	if (parent_fid) {
-		/* The parent fid is only for remote open to
-		 * check whether the open is from OBF,
-		 * see mdt_cross_open
-		 */
-		LASSERT(it->it_op & IT_OPEN);
-		op_data->op_fid2 = *parent_fid;
-	}
-
-	op_data->op_bias = MDS_CROSS_REF;
-	CDEBUG(D_INODE, "REMOTE_INTENT with fid=" DFID " -> mds #%u\n",
-	       PFID(&body->mbo_fid1), tgt->ltd_idx);
-
-	rc = md_intent_lock(tgt->ltd_exp, op_data, it, &req, cb_blocking,
-			    extra_lock_flags);
-	if (rc)
-		goto out_free_op_data;
-
-	/*
-	 * LLite needs LOOKUP lock to track dentry revocation in order to
-	 * maintain dcache consistency. Thus drop UPDATE|PERM lock here
-	 * and put LOOKUP in request.
-	 */
-	if (it->it_lock_mode != 0) {
-		it->it_remote_lock_handle =
-					it->it_lock_handle;
-		it->it_remote_lock_mode = it->it_lock_mode;
-	}
-
-	if (pmode) {
-		it->it_lock_handle = plock.cookie;
-		it->it_lock_mode = pmode;
-	}
-
-out_free_op_data:
-	kfree(op_data);
-out:
-	if (rc && pmode)
-		ldlm_lock_decref(&plock, pmode);
-
-	ptlrpc_req_finished(*reqp);
-	*reqp = req;
-	return rc;
-}
-
-int lmv_revalidate_slaves(struct obd_export *exp,
-			  const struct lmv_stripe_md *lsm,
-			  ldlm_blocking_callback cb_blocking,
-			  int extra_lock_flags)
-{
-	struct obd_device *obd = exp->exp_obd;
-	struct lmv_obd *lmv = &obd->u.lmv;
-	struct ptlrpc_request *req = NULL;
-	struct mdt_body *body;
-	struct md_op_data *op_data;
-	int rc = 0, i;
-
-	/**
-	 * revalidate slaves has some problems, temporarily return,
-	 * we may not need that
-	 */
-	op_data = kzalloc(sizeof(*op_data), GFP_NOFS);
-	if (!op_data)
-		return -ENOMEM;
-
-	/**
-	 * Loop over the stripe information, check validity and update them
-	 * from MDS if needed.
-	 */
-	for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
-		struct lookup_intent it = { .it_op = IT_GETATTR };
-		struct lustre_handle *lockh = NULL;
-		struct lmv_tgt_desc *tgt = NULL;
-		struct inode *inode;
-		struct lu_fid fid;
-
-		fid = lsm->lsm_md_oinfo[i].lmo_fid;
-		inode = lsm->lsm_md_oinfo[i].lmo_root;
-
-		/*
-		 * Prepare op_data for revalidating. Note that @fid2 shluld be
-		 * defined otherwise it will go to server and take new lock
-		 * which is not needed here.
-		 */
-		memset(op_data, 0, sizeof(*op_data));
-		op_data->op_fid1 = fid;
-		op_data->op_fid2 = fid;
-
-		tgt = lmv_locate_mds(lmv, op_data, &fid);
-		if (IS_ERR(tgt)) {
-			rc = PTR_ERR(tgt);
-			goto cleanup;
-		}
-
-		CDEBUG(D_INODE, "Revalidate slave " DFID " -> mds #%u\n",
-		       PFID(&fid), tgt->ltd_idx);
-
-		if (req) {
-			ptlrpc_req_finished(req);
-			req = NULL;
-		}
-
-		rc = md_intent_lock(tgt->ltd_exp, op_data, &it, &req,
-				    cb_blocking, extra_lock_flags);
-		if (rc < 0)
-			goto cleanup;
-
-		lockh = (struct lustre_handle *)&it.it_lock_handle;
-		if (rc > 0 && !req) {
-			/* slave inode is still valid */
-			CDEBUG(D_INODE, "slave " DFID " is still valid.\n",
-			       PFID(&fid));
-			rc = 0;
-		} else {
-			/* refresh slave from server */
-			body = req_capsule_server_get(&req->rq_pill,
-						      &RMF_MDT_BODY);
-			if (!body) {
-				if (it.it_lock_mode && lockh) {
-					ldlm_lock_decref(lockh, it.it_lock_mode);
-					it.it_lock_mode = 0;
-				}
-
-				rc = -ENOENT;
-				goto cleanup;
-			}
-
-			i_size_write(inode, body->mbo_size);
-			inode->i_blocks = body->mbo_blocks;
-			set_nlink(inode, body->mbo_nlink);
-			LTIME_S(inode->i_atime) = body->mbo_atime;
-			LTIME_S(inode->i_ctime) = body->mbo_ctime;
-			LTIME_S(inode->i_mtime) = body->mbo_mtime;
-		}
-
-		md_set_lock_data(tgt->ltd_exp, lockh, inode, NULL);
-
-		if (it.it_lock_mode && lockh) {
-			ldlm_lock_decref(lockh, it.it_lock_mode);
-			it.it_lock_mode = 0;
-		}
-	}
-
-cleanup:
-	if (req)
-		ptlrpc_req_finished(req);
-
-	kfree(op_data);
-	return rc;
-}
-
-/*
- * IT_OPEN is intended to open (and create, possible) an object. Parent (pid)
- * may be split dir.
- */
-static int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
-			   struct lookup_intent *it,
-			   struct ptlrpc_request **reqp,
-			   ldlm_blocking_callback cb_blocking,
-			   __u64 extra_lock_flags)
-{
-	struct obd_device	*obd = exp->exp_obd;
-	struct lmv_obd		*lmv = &obd->u.lmv;
-	struct lmv_tgt_desc	*tgt;
-	struct mdt_body		*body;
-	int			rc;
-
-	if (it->it_flags & MDS_OPEN_BY_FID) {
-		LASSERT(fid_is_sane(&op_data->op_fid2));
-
-		/*
-		 * for striped directory, we can't know parent stripe fid
-		 * without name, but we can set it to child fid, and MDT
-		 * will obtain it from linkea in open in such case.
-		 */
-		if (op_data->op_mea1)
-			op_data->op_fid1 = op_data->op_fid2;
-
-		tgt = lmv_find_target(lmv, &op_data->op_fid2);
-		if (IS_ERR(tgt))
-			return PTR_ERR(tgt);
-
-		op_data->op_mds = tgt->ltd_idx;
-	} else {
-		LASSERT(fid_is_sane(&op_data->op_fid1));
-		LASSERT(fid_is_zero(&op_data->op_fid2));
-		LASSERT(op_data->op_name);
-
-		tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
-		if (IS_ERR(tgt))
-			return PTR_ERR(tgt);
-	}
-
-	/* If it is ready to open the file by FID, do not need
-	 * allocate FID at all, otherwise it will confuse MDT
-	 */
-	if ((it->it_op & IT_CREAT) && !(it->it_flags & MDS_OPEN_BY_FID)) {
-		/*
-		 * For lookup(IT_CREATE) cases allocate new fid and setup FLD
-		 * for it.
-		 */
-		rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
-		if (rc != 0)
-			return rc;
-	}
-
-	CDEBUG(D_INODE, "OPEN_INTENT with fid1=" DFID ", fid2=" DFID ", name='%s' -> mds #%u\n",
-	       PFID(&op_data->op_fid1),
-	       PFID(&op_data->op_fid2), op_data->op_name, tgt->ltd_idx);
-
-	rc = md_intent_lock(tgt->ltd_exp, op_data, it, reqp, cb_blocking,
-			    extra_lock_flags);
-	if (rc != 0)
-		return rc;
-	/*
-	 * Nothing is found, do not access body->mbo_fid1 as it is zero and thus
-	 * pointless.
-	 */
-	if ((it->it_disposition & DISP_LOOKUP_NEG) &&
-	    !(it->it_disposition & DISP_OPEN_CREATE) &&
-	    !(it->it_disposition & DISP_OPEN_OPEN))
-		return rc;
-
-	body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
-	if (!body)
-		return -EPROTO;
-
-	/* Not cross-ref case, just get out of here. */
-	if (unlikely((body->mbo_valid & OBD_MD_MDS))) {
-		rc = lmv_intent_remote(exp, it, &op_data->op_fid1, reqp,
-				       cb_blocking, extra_lock_flags);
-		if (rc != 0)
-			return rc;
-
-		body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
-		if (!body)
-			return -EPROTO;
-	}
-
-	return rc;
-}
-
-/*
- * Handler for: getattr, lookup and revalidate cases.
- */
-static int lmv_intent_lookup(struct obd_export *exp,
-			     struct md_op_data *op_data,
-			     struct lookup_intent *it,
-			     struct ptlrpc_request **reqp,
-			     ldlm_blocking_callback cb_blocking,
-			     __u64 extra_lock_flags)
-{
-	struct lmv_stripe_md *lsm = op_data->op_mea1;
-	struct obd_device      *obd = exp->exp_obd;
-	struct lmv_obd	 *lmv = &obd->u.lmv;
-	struct lmv_tgt_desc    *tgt = NULL;
-	struct mdt_body	*body;
-	int		     rc = 0;
-
-	/*
-	 * If it returns ERR_PTR(-EBADFD) then it is an unknown hash type
-	 * it will try all stripes to locate the object
-	 */
-	tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
-	if (IS_ERR(tgt) && (PTR_ERR(tgt) != -EBADFD))
-		return PTR_ERR(tgt);
-
-	/*
-	 * Both migrating dir and unknown hash dir need to try
-	 * all of sub-stripes
-	 */
-	if (lsm && !lmv_is_known_hash_type(lsm->lsm_md_hash_type)) {
-		struct lmv_oinfo *oinfo = &lsm->lsm_md_oinfo[0];
-
-		op_data->op_fid1 = oinfo->lmo_fid;
-		op_data->op_mds = oinfo->lmo_mds;
-		tgt = lmv_get_target(lmv, oinfo->lmo_mds, NULL);
-		if (IS_ERR(tgt))
-			return PTR_ERR(tgt);
-	}
-
-	if (!fid_is_sane(&op_data->op_fid2))
-		fid_zero(&op_data->op_fid2);
-
-	CDEBUG(D_INODE, "LOOKUP_INTENT with fid1=" DFID ", fid2=" DFID ", name='%s' -> mds #%u lsm=%p lsm_magic=%x\n",
-	       PFID(&op_data->op_fid1), PFID(&op_data->op_fid2),
-	       op_data->op_name ? op_data->op_name : "<NULL>",
-	       tgt->ltd_idx, lsm, !lsm ? -1 : lsm->lsm_md_magic);
-
-	op_data->op_bias &= ~MDS_CROSS_REF;
-
-	rc = md_intent_lock(tgt->ltd_exp, op_data, it, reqp, cb_blocking,
-			    extra_lock_flags);
-	if (rc < 0)
-		return rc;
-
-	if (!*reqp) {
-		/*
-		 * If RPC happens, lsm information will be revalidated
-		 * during update_inode process (see ll_update_lsm_md)
-		 */
-		if (op_data->op_mea2) {
-			rc = lmv_revalidate_slaves(exp, op_data->op_mea2,
-						   cb_blocking,
-						   extra_lock_flags);
-			if (rc != 0)
-				return rc;
-		}
-		return rc;
-	} else if (it_disposition(it, DISP_LOOKUP_NEG) && lsm &&
-		   lmv_need_try_all_stripes(lsm)) {
-		/*
-		 * For migrating and unknown hash type directory, it will
-		 * try to target the entry on other stripes
-		 */
-		int stripe_index;
-
-		for (stripe_index = 1;
-		     stripe_index < lsm->lsm_md_stripe_count &&
-		     it_disposition(it, DISP_LOOKUP_NEG); stripe_index++) {
-			struct lmv_oinfo *oinfo;
-
-			/* release the previous request */
-			ptlrpc_req_finished(*reqp);
-			it->it_request = NULL;
-			*reqp = NULL;
-
-			oinfo = &lsm->lsm_md_oinfo[stripe_index];
-			tgt = lmv_find_target(lmv, &oinfo->lmo_fid);
-			if (IS_ERR(tgt))
-				return PTR_ERR(tgt);
-
-			CDEBUG(D_INODE, "Try other stripes " DFID "\n",
-			       PFID(&oinfo->lmo_fid));
-
-			op_data->op_fid1 = oinfo->lmo_fid;
-			it->it_disposition &= ~DISP_ENQ_COMPLETE;
-			rc = md_intent_lock(tgt->ltd_exp, op_data, it, reqp,
-					    cb_blocking, extra_lock_flags);
-			if (rc)
-				return rc;
-		}
-	}
-
-	/*
-	 * MDS has returned success. Probably name has been resolved in
-	 * remote inode. Let's check this.
-	 */
-	body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
-	if (!body)
-		return -EPROTO;
-
-	/* Not cross-ref case, just get out of here. */
-	if (unlikely((body->mbo_valid & OBD_MD_MDS))) {
-		rc = lmv_intent_remote(exp, it, NULL, reqp, cb_blocking,
-				       extra_lock_flags);
-		if (rc != 0)
-			return rc;
-		body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
-		if (!body)
-			return -EPROTO;
-	}
-
-	return rc;
-}
-
-int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
-		    struct lookup_intent *it, struct ptlrpc_request **reqp,
-		    ldlm_blocking_callback cb_blocking,
-		    __u64 extra_lock_flags)
-{
-	int		rc;
-
-	LASSERT(fid_is_sane(&op_data->op_fid1));
-
-	CDEBUG(D_INODE, "INTENT LOCK '%s' for " DFID " '%*s' on " DFID "\n",
-	       LL_IT2STR(it), PFID(&op_data->op_fid2),
-	       (int)op_data->op_namelen, op_data->op_name,
-	       PFID(&op_data->op_fid1));
-
-	if (it->it_op & (IT_LOOKUP | IT_GETATTR | IT_LAYOUT))
-		rc = lmv_intent_lookup(exp, op_data, it, reqp, cb_blocking,
-				       extra_lock_flags);
-	else if (it->it_op & IT_OPEN)
-		rc = lmv_intent_open(exp, op_data, it, reqp, cb_blocking,
-				     extra_lock_flags);
-	else
-		LBUG();
-
-	if (rc < 0) {
-		struct lustre_handle lock_handle;
-
-		if (it->it_lock_mode) {
-			lock_handle.cookie = it->it_lock_handle;
-			ldlm_lock_decref(&lock_handle, it->it_lock_mode);
-		}
-
-		it->it_lock_handle = 0;
-		it->it_lock_mode = 0;
-
-		if (it->it_remote_lock_mode) {
-			lock_handle.cookie = it->it_remote_lock_handle;
-			ldlm_lock_decref(&lock_handle,
-					 it->it_remote_lock_mode);
-		}
-
-		it->it_remote_lock_handle = 0;
-		it->it_remote_lock_mode = 0;
-	}
-
-	return rc;
-}