1 files changed, 0 insertions, 275 deletions
diff --git a/drivers/staging/lustre/lustre/obdclass/cl_lock.c b/drivers/staging/lustre/lustre/obdclass/cl_lock.c
deleted file mode 100644
index 9ca29a26a38b..000000000000
--- a/drivers/staging/lustre/lustre/obdclass/cl_lock.c
+++ /dev/null
@@ -1,275 +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) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2012, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * Client Extent Lock.
- *
- *   Author: Nikita Danilov <nikita.danilov@sun.com>
- *   Author: Jinshan Xiong <jinshan.xiong@intel.com>
- */
-
-#define DEBUG_SUBSYSTEM S_CLASS
-
-#include <obd_class.h>
-#include <obd_support.h>
-#include <lustre_fid.h>
-#include <linux/list.h>
-#include <cl_object.h>
-#include "cl_internal.h"
-
-static void cl_lock_trace0(int level, const struct lu_env *env,
-			   const char *prefix, const struct cl_lock *lock,
-			   const char *func, const int line)
-{
-	struct cl_object_header *h = cl_object_header(lock->cll_descr.cld_obj);
-
-	CDEBUG(level, "%s: %p (%p/%d) at %s():%d\n",
-	       prefix, lock, env, h->coh_nesting, func, line);
-}
-#define cl_lock_trace(level, env, prefix, lock)				\
-	cl_lock_trace0(level, env, prefix, lock, __func__, __LINE__)
-
-/**
- * Adds lock slice to the compound lock.
- *
- * This is called by cl_object_operations::coo_lock_init() methods to add a
- * per-layer state to the lock. New state is added at the end of
- * cl_lock::cll_layers list, that is, it is at the bottom of the stack.
- *
- * \see cl_req_slice_add(), cl_page_slice_add(), cl_io_slice_add()
- */
-void cl_lock_slice_add(struct cl_lock *lock, struct cl_lock_slice *slice,
-		       struct cl_object *obj,
-		       const struct cl_lock_operations *ops)
-{
-	slice->cls_lock = lock;
-	list_add_tail(&slice->cls_linkage, &lock->cll_layers);
-	slice->cls_obj = obj;
-	slice->cls_ops = ops;
-}
-EXPORT_SYMBOL(cl_lock_slice_add);
-
-void cl_lock_fini(const struct lu_env *env, struct cl_lock *lock)
-{
-	struct cl_lock_slice *slice;
-	cl_lock_trace(D_DLMTRACE, env, "destroy lock", lock);
-
-	while ((slice = list_first_entry_or_null(&lock->cll_layers,
-						 struct cl_lock_slice,
-						 cls_linkage)) != NULL) {
-		list_del_init(lock->cll_layers.next);
-		slice->cls_ops->clo_fini(env, slice);
-	}
-	POISON(lock, 0x5a, sizeof(*lock));
-}
-EXPORT_SYMBOL(cl_lock_fini);
-
-int cl_lock_init(const struct lu_env *env, struct cl_lock *lock,
-		 const struct cl_io *io)
-{
-	struct cl_object *obj = lock->cll_descr.cld_obj;
-	struct cl_object *scan;
-	int result = 0;
-
-	/* Make sure cl_lock::cll_descr is initialized. */
-	LASSERT(obj);
-
-	INIT_LIST_HEAD(&lock->cll_layers);
-	list_for_each_entry(scan, &obj->co_lu.lo_header->loh_layers,
-			    co_lu.lo_linkage) {
-		result = scan->co_ops->coo_lock_init(env, scan, lock, io);
-		if (result != 0) {
-			cl_lock_fini(env, lock);
-			break;
-		}
-	}
-
-	return result;
-}
-EXPORT_SYMBOL(cl_lock_init);
-
-/**
- * Returns a slice with a lock, corresponding to the given layer in the
- * device stack.
- *
- * \see cl_page_at()
- */
-const struct cl_lock_slice *cl_lock_at(const struct cl_lock *lock,
-				       const struct lu_device_type *dtype)
-{
-	const struct cl_lock_slice *slice;
-
-	list_for_each_entry(slice, &lock->cll_layers, cls_linkage) {
-		if (slice->cls_obj->co_lu.lo_dev->ld_type == dtype)
-			return slice;
-	}
-	return NULL;
-}
-EXPORT_SYMBOL(cl_lock_at);
-
-void cl_lock_cancel(const struct lu_env *env, struct cl_lock *lock)
-{
-	const struct cl_lock_slice *slice;
-
-	cl_lock_trace(D_DLMTRACE, env, "cancel lock", lock);
-	list_for_each_entry_reverse(slice, &lock->cll_layers, cls_linkage) {
-		if (slice->cls_ops->clo_cancel)
-			slice->cls_ops->clo_cancel(env, slice);
-	}
-}
-EXPORT_SYMBOL(cl_lock_cancel);
-
-/**
- * Enqueue a lock.
- * \param anchor: if we need to wait for resources before getting the lock,
- *		  use @anchor for the purpose.
- * \retval 0  enqueue successfully
- * \retval <0 error code
- */
-int cl_lock_enqueue(const struct lu_env *env, struct cl_io *io,
-		    struct cl_lock *lock, struct cl_sync_io *anchor)
-{
-	const struct cl_lock_slice *slice;
-	int rc = -ENOSYS;
-
-	list_for_each_entry(slice, &lock->cll_layers, cls_linkage) {
-		if (!slice->cls_ops->clo_enqueue)
-			continue;
-
-		rc = slice->cls_ops->clo_enqueue(env, slice, io, anchor);
-		if (rc != 0)
-			break;
-		}
-	return rc;
-}
-EXPORT_SYMBOL(cl_lock_enqueue);
-
-/**
- * Main high-level entry point of cl_lock interface that finds existing or
- * enqueues new lock matching given description.
- */
-int cl_lock_request(const struct lu_env *env, struct cl_io *io,
-		    struct cl_lock *lock)
-{
-	struct cl_sync_io *anchor = NULL;
-	__u32 enq_flags = lock->cll_descr.cld_enq_flags;
-	int rc;
-
-	rc = cl_lock_init(env, lock, io);
-	if (rc < 0)
-		return rc;
-
-	if ((enq_flags & CEF_ASYNC) && !(enq_flags & CEF_AGL)) {
-		anchor = &cl_env_info(env)->clt_anchor;
-		cl_sync_io_init(anchor, 1, cl_sync_io_end);
-	}
-
-	rc = cl_lock_enqueue(env, io, lock, anchor);
-
-	if (anchor) {
-		int rc2;
-
-		/* drop the reference count held at initialization time */
-		cl_sync_io_note(env, anchor, 0);
-		rc2 = cl_sync_io_wait(env, anchor, 0);
-		if (rc2 < 0 && rc == 0)
-			rc = rc2;
-	}
-
-	if (rc < 0)
-		cl_lock_release(env, lock);
-
-	return rc;
-}
-EXPORT_SYMBOL(cl_lock_request);
-
-/**
- * Releases a hold and a reference on a lock, obtained by cl_lock_hold().
- */
-void cl_lock_release(const struct lu_env *env, struct cl_lock *lock)
-{
-	cl_lock_trace(D_DLMTRACE, env, "release lock", lock);
-	cl_lock_cancel(env, lock);
-	cl_lock_fini(env, lock);
-}
-EXPORT_SYMBOL(cl_lock_release);
-
-const char *cl_lock_mode_name(const enum cl_lock_mode mode)
-{
-	static const char * const names[] = {
-		[CLM_READ]    = "R",
-		[CLM_WRITE]   = "W",
-		[CLM_GROUP]   = "G"
-	};
-	if (0 <= mode && mode < ARRAY_SIZE(names))
-		return names[mode];
-	else
-		return "U";
-}
-EXPORT_SYMBOL(cl_lock_mode_name);
-
-/**
- * Prints human readable representation of a lock description.
- */
-void cl_lock_descr_print(const struct lu_env *env, void *cookie,
-			 lu_printer_t printer,
-			 const struct cl_lock_descr *descr)
-{
-	const struct lu_fid  *fid;
-
-	fid = lu_object_fid(&descr->cld_obj->co_lu);
-	(*printer)(env, cookie, DDESCR "@" DFID, PDESCR(descr), PFID(fid));
-}
-EXPORT_SYMBOL(cl_lock_descr_print);
-
-/**
- * Prints human readable representation of \a lock to the \a f.
- */
-void cl_lock_print(const struct lu_env *env, void *cookie,
-		   lu_printer_t printer, const struct cl_lock *lock)
-{
-	const struct cl_lock_slice *slice;
-
-	(*printer)(env, cookie, "lock@%p", lock);
-	cl_lock_descr_print(env, cookie, printer, &lock->cll_descr);
-	(*printer)(env, cookie, " {\n");
-
-	list_for_each_entry(slice, &lock->cll_layers, cls_linkage) {
-		(*printer)(env, cookie, "    %s@%p: ",
-			   slice->cls_obj->co_lu.lo_dev->ld_type->ldt_name,
-			   slice);
-		if (slice->cls_ops->clo_print)
-			slice->cls_ops->clo_print(env, cookie, printer, slice);
-		(*printer)(env, cookie, "\n");
-	}
-	(*printer)(env, cookie, "} lock@%p\n", lock);
-}
-EXPORT_SYMBOL(cl_lock_print);