staging: lustre: delete the filesystem from the tree.

The Lustre filesystem has been in the kernel tree for over 5 years now.
While it has been an endless source of enjoyment for new kernel
developers learning how to do basic codingstyle cleanups, as well as an
semi-entertaining source of bewilderment from the vfs developers any
time they have looked into the codebase to try to figure out how to port
their latest api changes to this filesystem, it has not really moved
forward into the "this is in shape to get out of staging" despite many
half-completed attempts.

And getting code out of staging is the main goal of that portion of the
kernel tree.  Code should not stagnate and it feels like having this
code in staging is only causing the development cycle of the filesystem
to take longer than it should.  There is a whole separate out-of-tree
copy of this codebase where the developers work on it, and then random
changes are thrown over the wall at staging at some later point in time.
This dual-tree development model has never worked, and the state of this
codebase is proof of that.

So, let's just delete the whole mess.  Now the lustre developers can go
off and work in their out-of-tree codebase and not have to worry about
providing valid changelog entries and breaking their patches up into
logical pieces.  They can take the time they have spend doing those
types of housekeeping chores and get the codebase into a much better
shape, and it can be submitted for inclusion into the real part of the
kernel tree when ready.

Cc: Oleg Drokin <oleg.drokin@intel.com>
Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 246 deletions

diff --git a/drivers/staging/lustre/lustre/osc/osc_dev.c b/drivers/staging/lustre/lustre/osc/osc_dev.c
deleted file mode 100644
index 2b5f324743e2..000000000000
--- a/drivers/staging/lustre/lustre/osc/osc_dev.c
+++ /dev/null
@@ -1,246 +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) 2012, 2015, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * Implementation of cl_device, for OSC layer.
- *
- *   Author: Nikita Danilov <nikita.danilov@sun.com>
- */
-
-#define DEBUG_SUBSYSTEM S_OSC
-
-/* class_name2obd() */
-#include <obd_class.h>
-
-#include "osc_cl_internal.h"
-
-/** \addtogroup osc
- * @{
- */
-
-struct kmem_cache *osc_lock_kmem;
-struct kmem_cache *osc_object_kmem;
-struct kmem_cache *osc_thread_kmem;
-struct kmem_cache *osc_session_kmem;
-struct kmem_cache *osc_extent_kmem;
-struct kmem_cache *osc_quota_kmem;
-
-struct lu_kmem_descr osc_caches[] = {
-	{
-		.ckd_cache = &osc_lock_kmem,
-		.ckd_name  = "osc_lock_kmem",
-		.ckd_size  = sizeof(struct osc_lock)
-	},
-	{
-		.ckd_cache = &osc_object_kmem,
-		.ckd_name  = "osc_object_kmem",
-		.ckd_size  = sizeof(struct osc_object)
-	},
-	{
-		.ckd_cache = &osc_thread_kmem,
-		.ckd_name  = "osc_thread_kmem",
-		.ckd_size  = sizeof(struct osc_thread_info)
-	},
-	{
-		.ckd_cache = &osc_session_kmem,
-		.ckd_name  = "osc_session_kmem",
-		.ckd_size  = sizeof(struct osc_session)
-	},
-	{
-		.ckd_cache = &osc_extent_kmem,
-		.ckd_name  = "osc_extent_kmem",
-		.ckd_size  = sizeof(struct osc_extent)
-	},
-	{
-		.ckd_cache = &osc_quota_kmem,
-		.ckd_name  = "osc_quota_kmem",
-		.ckd_size  = sizeof(struct osc_quota_info)
-	},
-	{
-		.ckd_cache = NULL
-	}
-};
-
-/*****************************************************************************
- *
- * Type conversions.
- *
- */
-
-static struct lu_device *osc2lu_dev(struct osc_device *osc)
-{
-	return &osc->od_cl.cd_lu_dev;
-}
-
-/*****************************************************************************
- *
- * Osc device and device type functions.
- *
- */
-
-static void *osc_key_init(const struct lu_context *ctx,
-			  struct lu_context_key *key)
-{
-	struct osc_thread_info *info;
-
-	info = kmem_cache_zalloc(osc_thread_kmem, GFP_NOFS);
-	if (!info)
-		info = ERR_PTR(-ENOMEM);
-	return info;
-}
-
-static void osc_key_fini(const struct lu_context *ctx,
-			 struct lu_context_key *key, void *data)
-{
-	struct osc_thread_info *info = data;
-
-	kmem_cache_free(osc_thread_kmem, info);
-}
-
-struct lu_context_key osc_key = {
-	.lct_tags = LCT_CL_THREAD,
-	.lct_init = osc_key_init,
-	.lct_fini = osc_key_fini
-};
-
-static void *osc_session_init(const struct lu_context *ctx,
-			      struct lu_context_key *key)
-{
-	struct osc_session *info;
-
-	info = kmem_cache_zalloc(osc_session_kmem, GFP_NOFS);
-	if (!info)
-		info = ERR_PTR(-ENOMEM);
-	return info;
-}
-
-static void osc_session_fini(const struct lu_context *ctx,
-			     struct lu_context_key *key, void *data)
-{
-	struct osc_session *info = data;
-
-	kmem_cache_free(osc_session_kmem, info);
-}
-
-struct lu_context_key osc_session_key = {
-	.lct_tags = LCT_SESSION,
-	.lct_init = osc_session_init,
-	.lct_fini = osc_session_fini
-};
-
-/* type constructor/destructor: osc_type_{init,fini,start,stop}(). */
-LU_TYPE_INIT_FINI(osc, &osc_key, &osc_session_key);
-
-static int osc_cl_process_config(const struct lu_env *env,
-				 struct lu_device *d, struct lustre_cfg *cfg)
-{
-	return osc_process_config_base(d->ld_obd, cfg);
-}
-
-static const struct lu_device_operations osc_lu_ops = {
-	.ldo_object_alloc      = osc_object_alloc,
-	.ldo_process_config    = osc_cl_process_config,
-	.ldo_recovery_complete = NULL
-};
-
-static int osc_device_init(const struct lu_env *env, struct lu_device *d,
-			   const char *name, struct lu_device *next)
-{
-	return 0;
-}
-
-static struct lu_device *osc_device_fini(const struct lu_env *env,
-					 struct lu_device *d)
-{
-	return NULL;
-}
-
-static struct lu_device *osc_device_free(const struct lu_env *env,
-					 struct lu_device *d)
-{
-	struct osc_device *od = lu2osc_dev(d);
-
-	cl_device_fini(lu2cl_dev(d));
-	kfree(od);
-	return NULL;
-}
-
-static struct lu_device *osc_device_alloc(const struct lu_env *env,
-					  struct lu_device_type *t,
-					  struct lustre_cfg *cfg)
-{
-	struct lu_device *d;
-	struct osc_device *od;
-	struct obd_device *obd;
-	int rc;
-
-	od = kzalloc(sizeof(*od), GFP_NOFS);
-	if (!od)
-		return ERR_PTR(-ENOMEM);
-
-	cl_device_init(&od->od_cl, t);
-	d = osc2lu_dev(od);
-	d->ld_ops = &osc_lu_ops;
-
-	/* Setup OSC OBD */
-	obd = class_name2obd(lustre_cfg_string(cfg, 0));
-	LASSERT(obd);
-	rc = osc_setup(obd, cfg);
-	if (rc) {
-		osc_device_free(env, d);
-		return ERR_PTR(rc);
-	}
-	od->od_exp = obd->obd_self_export;
-	return d;
-}
-
-static const struct lu_device_type_operations osc_device_type_ops = {
-	.ldto_init = osc_type_init,
-	.ldto_fini = osc_type_fini,
-
-	.ldto_start = osc_type_start,
-	.ldto_stop  = osc_type_stop,
-
-	.ldto_device_alloc = osc_device_alloc,
-	.ldto_device_free  = osc_device_free,
-
-	.ldto_device_init = osc_device_init,
-	.ldto_device_fini = osc_device_fini
-};
-
-struct lu_device_type osc_device_type = {
-	.ldt_tags = LU_DEVICE_CL,
-	.ldt_name = LUSTRE_OSC_NAME,
-	.ldt_ops = &osc_device_type_ops,
-	.ldt_ctx_tags = LCT_CL_THREAD
-};
-
-/** @} osc */