Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1 | /* |
| 2 | * GPL HEADER START |
| 3 | * |
| 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 only, |
| 8 | * as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * General Public License version 2 for more details (a copy is included |
| 14 | * in the LICENSE file that accompanied this code). |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * version 2 along with this program; If not, see |
Oleg Drokin | 6a5b99a | 2016-06-14 23:33:40 -0400 | [diff] [blame] | 18 | * http://www.gnu.org/licenses/gpl-2.0.html |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 19 | * |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 20 | * GPL HEADER END |
| 21 | */ |
| 22 | /* |
| 23 | * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
| 24 | * Use is subject to license terms. |
| 25 | * |
Andreas Dilger | 1dc563a | 2015-11-08 18:09:37 -0500 | [diff] [blame] | 26 | * Copyright (c) 2011, 2015, Intel Corporation. |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 27 | */ |
| 28 | /* |
| 29 | * This file is part of Lustre, http://www.lustre.org/ |
| 30 | * Lustre is a trademark of Sun Microsystems, Inc. |
| 31 | */ |
| 32 | |
| 33 | #define DEBUG_SUBSYSTEM S_ECHO |
Greg Kroah-Hartman | 9fdaf8c | 2014-07-11 20:51:16 -0700 | [diff] [blame] | 34 | #include "../../include/linux/libcfs/libcfs.h" |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 35 | |
Greg Kroah-Hartman | 7f2d973 | 2014-07-11 22:17:53 -0700 | [diff] [blame] | 36 | #include "../include/obd.h" |
| 37 | #include "../include/obd_support.h" |
| 38 | #include "../include/obd_class.h" |
| 39 | #include "../include/lustre_debug.h" |
| 40 | #include "../include/lprocfs_status.h" |
| 41 | #include "../include/cl_object.h" |
Greg Kroah-Hartman | 7f2d973 | 2014-07-11 22:17:53 -0700 | [diff] [blame] | 42 | #include "../include/lustre_fid.h" |
| 43 | #include "../include/lustre_acl.h" |
John L. Hammond | 8877d3b | 2016-08-16 16:18:51 -0400 | [diff] [blame] | 44 | #include "../include/lustre/lustre_ioctl.h" |
Greg Kroah-Hartman | 7f2d973 | 2014-07-11 22:17:53 -0700 | [diff] [blame] | 45 | #include "../include/lustre_net.h" |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 46 | |
| 47 | #include "echo_internal.h" |
| 48 | |
| 49 | /** \defgroup echo_client Echo Client |
| 50 | * @{ |
| 51 | */ |
| 52 | |
| 53 | struct echo_device { |
| 54 | struct cl_device ed_cl; |
| 55 | struct echo_client_obd *ed_ec; |
| 56 | |
| 57 | struct cl_site ed_site_myself; |
| 58 | struct cl_site *ed_site; |
| 59 | struct lu_device *ed_next; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 60 | }; |
| 61 | |
| 62 | struct echo_object { |
| 63 | struct cl_object eo_cl; |
| 64 | struct cl_object_header eo_hdr; |
| 65 | |
| 66 | struct echo_device *eo_dev; |
| 67 | struct list_head eo_obj_chain; |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 68 | struct lov_oinfo *eo_oinfo; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 69 | atomic_t eo_npages; |
| 70 | int eo_deleted; |
| 71 | }; |
| 72 | |
| 73 | struct echo_object_conf { |
| 74 | struct cl_object_conf eoc_cl; |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 75 | struct lov_oinfo **eoc_oinfo; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 76 | }; |
| 77 | |
| 78 | struct echo_page { |
| 79 | struct cl_page_slice ep_cl; |
| 80 | struct mutex ep_lock; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 81 | }; |
| 82 | |
| 83 | struct echo_lock { |
| 84 | struct cl_lock_slice el_cl; |
| 85 | struct list_head el_chain; |
| 86 | struct echo_object *el_object; |
| 87 | __u64 el_cookie; |
| 88 | atomic_t el_refcount; |
| 89 | }; |
| 90 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 91 | static int echo_client_setup(const struct lu_env *env, |
| 92 | struct obd_device *obddev, |
| 93 | struct lustre_cfg *lcfg); |
| 94 | static int echo_client_cleanup(struct obd_device *obddev); |
| 95 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 96 | /** \defgroup echo_helpers Helper functions |
| 97 | * @{ |
| 98 | */ |
| 99 | static inline struct echo_device *cl2echo_dev(const struct cl_device *dev) |
| 100 | { |
| 101 | return container_of0(dev, struct echo_device, ed_cl); |
| 102 | } |
| 103 | |
| 104 | static inline struct cl_device *echo_dev2cl(struct echo_device *d) |
| 105 | { |
| 106 | return &d->ed_cl; |
| 107 | } |
| 108 | |
| 109 | static inline struct echo_device *obd2echo_dev(const struct obd_device *obd) |
| 110 | { |
| 111 | return cl2echo_dev(lu2cl_dev(obd->obd_lu_dev)); |
| 112 | } |
| 113 | |
| 114 | static inline struct cl_object *echo_obj2cl(struct echo_object *eco) |
| 115 | { |
| 116 | return &eco->eo_cl; |
| 117 | } |
| 118 | |
| 119 | static inline struct echo_object *cl2echo_obj(const struct cl_object *o) |
| 120 | { |
| 121 | return container_of(o, struct echo_object, eo_cl); |
| 122 | } |
| 123 | |
| 124 | static inline struct echo_page *cl2echo_page(const struct cl_page_slice *s) |
| 125 | { |
| 126 | return container_of(s, struct echo_page, ep_cl); |
| 127 | } |
| 128 | |
| 129 | static inline struct echo_lock *cl2echo_lock(const struct cl_lock_slice *s) |
| 130 | { |
| 131 | return container_of(s, struct echo_lock, el_cl); |
| 132 | } |
| 133 | |
| 134 | static inline struct cl_lock *echo_lock2cl(const struct echo_lock *ecl) |
| 135 | { |
| 136 | return ecl->el_cl.cls_lock; |
| 137 | } |
| 138 | |
| 139 | static struct lu_context_key echo_thread_key; |
| 140 | static inline struct echo_thread_info *echo_env_info(const struct lu_env *env) |
| 141 | { |
| 142 | struct echo_thread_info *info; |
Hatice ERTÜRK | ded9f90 | 2015-02-27 21:34:25 +0200 | [diff] [blame] | 143 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 144 | info = lu_context_key_get(&env->le_ctx, &echo_thread_key); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 145 | LASSERT(info); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 146 | return info; |
| 147 | } |
| 148 | |
| 149 | static inline |
| 150 | struct echo_object_conf *cl2echo_conf(const struct cl_object_conf *c) |
| 151 | { |
| 152 | return container_of(c, struct echo_object_conf, eoc_cl); |
| 153 | } |
| 154 | |
| 155 | /** @} echo_helpers */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 156 | static int cl_echo_object_put(struct echo_object *eco); |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 157 | static int cl_echo_object_brw(struct echo_object *eco, int rw, u64 offset, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 158 | struct page **pages, int npages, int async); |
| 159 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 160 | struct echo_thread_info { |
| 161 | struct echo_object_conf eti_conf; |
| 162 | struct lustre_md eti_md; |
| 163 | |
| 164 | struct cl_2queue eti_queue; |
| 165 | struct cl_io eti_io; |
Jinshan Xiong | 06563b5 | 2016-03-30 19:48:40 -0400 | [diff] [blame] | 166 | struct cl_lock eti_lock; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 167 | struct lu_fid eti_fid; |
| 168 | struct lu_fid eti_fid2; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 169 | }; |
| 170 | |
| 171 | /* No session used right now */ |
| 172 | struct echo_session_info { |
| 173 | unsigned long dummy; |
| 174 | }; |
| 175 | |
| 176 | static struct kmem_cache *echo_lock_kmem; |
| 177 | static struct kmem_cache *echo_object_kmem; |
| 178 | static struct kmem_cache *echo_thread_kmem; |
| 179 | static struct kmem_cache *echo_session_kmem; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 180 | |
| 181 | static struct lu_kmem_descr echo_caches[] = { |
| 182 | { |
| 183 | .ckd_cache = &echo_lock_kmem, |
| 184 | .ckd_name = "echo_lock_kmem", |
Dilek Uzulmez | cb7e9f7 | 2015-02-28 00:54:17 +0200 | [diff] [blame] | 185 | .ckd_size = sizeof(struct echo_lock) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 186 | }, |
| 187 | { |
| 188 | .ckd_cache = &echo_object_kmem, |
| 189 | .ckd_name = "echo_object_kmem", |
Dilek Uzulmez | cb7e9f7 | 2015-02-28 00:54:17 +0200 | [diff] [blame] | 190 | .ckd_size = sizeof(struct echo_object) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 191 | }, |
| 192 | { |
| 193 | .ckd_cache = &echo_thread_kmem, |
| 194 | .ckd_name = "echo_thread_kmem", |
Dilek Uzulmez | cb7e9f7 | 2015-02-28 00:54:17 +0200 | [diff] [blame] | 195 | .ckd_size = sizeof(struct echo_thread_info) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 196 | }, |
| 197 | { |
| 198 | .ckd_cache = &echo_session_kmem, |
| 199 | .ckd_name = "echo_session_kmem", |
Dilek Uzulmez | cb7e9f7 | 2015-02-28 00:54:17 +0200 | [diff] [blame] | 200 | .ckd_size = sizeof(struct echo_session_info) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 201 | }, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 202 | { |
| 203 | .ckd_cache = NULL |
| 204 | } |
| 205 | }; |
| 206 | |
| 207 | /** \defgroup echo_page Page operations |
| 208 | * |
| 209 | * Echo page operations. |
| 210 | * |
| 211 | * @{ |
| 212 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 213 | static int echo_page_own(const struct lu_env *env, |
| 214 | const struct cl_page_slice *slice, |
| 215 | struct cl_io *io, int nonblock) |
| 216 | { |
| 217 | struct echo_page *ep = cl2echo_page(slice); |
| 218 | |
| 219 | if (!nonblock) |
| 220 | mutex_lock(&ep->ep_lock); |
| 221 | else if (!mutex_trylock(&ep->ep_lock)) |
| 222 | return -EAGAIN; |
| 223 | return 0; |
| 224 | } |
| 225 | |
| 226 | static void echo_page_disown(const struct lu_env *env, |
| 227 | const struct cl_page_slice *slice, |
| 228 | struct cl_io *io) |
| 229 | { |
| 230 | struct echo_page *ep = cl2echo_page(slice); |
| 231 | |
| 232 | LASSERT(mutex_is_locked(&ep->ep_lock)); |
| 233 | mutex_unlock(&ep->ep_lock); |
| 234 | } |
| 235 | |
| 236 | static void echo_page_discard(const struct lu_env *env, |
| 237 | const struct cl_page_slice *slice, |
| 238 | struct cl_io *unused) |
| 239 | { |
| 240 | cl_page_delete(env, slice->cpl_page); |
| 241 | } |
| 242 | |
| 243 | static int echo_page_is_vmlocked(const struct lu_env *env, |
| 244 | const struct cl_page_slice *slice) |
| 245 | { |
| 246 | if (mutex_is_locked(&cl2echo_page(slice)->ep_lock)) |
| 247 | return -EBUSY; |
| 248 | return -ENODATA; |
| 249 | } |
| 250 | |
| 251 | static void echo_page_completion(const struct lu_env *env, |
| 252 | const struct cl_page_slice *slice, |
| 253 | int ioret) |
| 254 | { |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 255 | LASSERT(slice->cpl_page->cp_sync_io); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 256 | } |
| 257 | |
| 258 | static void echo_page_fini(const struct lu_env *env, |
| 259 | struct cl_page_slice *slice) |
| 260 | { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 261 | struct echo_object *eco = cl2echo_obj(slice->cpl_obj); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 262 | |
| 263 | atomic_dec(&eco->eo_npages); |
Greg Kroah-Hartman | 5f47992 | 2016-04-11 09:30:50 -0700 | [diff] [blame] | 264 | put_page(slice->cpl_page->cp_vmpage); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | static int echo_page_prep(const struct lu_env *env, |
| 268 | const struct cl_page_slice *slice, |
| 269 | struct cl_io *unused) |
| 270 | { |
| 271 | return 0; |
| 272 | } |
| 273 | |
| 274 | static int echo_page_print(const struct lu_env *env, |
| 275 | const struct cl_page_slice *slice, |
| 276 | void *cookie, lu_printer_t printer) |
| 277 | { |
| 278 | struct echo_page *ep = cl2echo_page(slice); |
| 279 | |
| 280 | (*printer)(env, cookie, LUSTRE_ECHO_CLIENT_NAME"-page@%p %d vm@%p\n", |
Jinshan Xiong | 7addf40 | 2016-03-30 19:48:32 -0400 | [diff] [blame] | 281 | ep, mutex_is_locked(&ep->ep_lock), |
| 282 | slice->cpl_page->cp_vmpage); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 283 | return 0; |
| 284 | } |
| 285 | |
| 286 | static const struct cl_page_operations echo_page_ops = { |
| 287 | .cpo_own = echo_page_own, |
| 288 | .cpo_disown = echo_page_disown, |
| 289 | .cpo_discard = echo_page_discard, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 290 | .cpo_fini = echo_page_fini, |
| 291 | .cpo_print = echo_page_print, |
| 292 | .cpo_is_vmlocked = echo_page_is_vmlocked, |
| 293 | .io = { |
| 294 | [CRT_READ] = { |
| 295 | .cpo_prep = echo_page_prep, |
| 296 | .cpo_completion = echo_page_completion, |
| 297 | }, |
| 298 | [CRT_WRITE] = { |
| 299 | .cpo_prep = echo_page_prep, |
| 300 | .cpo_completion = echo_page_completion, |
| 301 | } |
| 302 | } |
| 303 | }; |
Mike Rapoport | c9f6bb9 | 2015-10-13 16:03:42 +0300 | [diff] [blame] | 304 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 305 | /** @} echo_page */ |
| 306 | |
| 307 | /** \defgroup echo_lock Locking |
| 308 | * |
| 309 | * echo lock operations |
| 310 | * |
| 311 | * @{ |
| 312 | */ |
| 313 | static void echo_lock_fini(const struct lu_env *env, |
| 314 | struct cl_lock_slice *slice) |
| 315 | { |
| 316 | struct echo_lock *ecl = cl2echo_lock(slice); |
| 317 | |
| 318 | LASSERT(list_empty(&ecl->el_chain)); |
Mike Rapoport | 50d3036 | 2015-10-20 12:39:51 +0300 | [diff] [blame] | 319 | kmem_cache_free(echo_lock_kmem, ecl); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 320 | } |
| 321 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 322 | static struct cl_lock_operations echo_lock_ops = { |
| 323 | .clo_fini = echo_lock_fini, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 324 | }; |
| 325 | |
| 326 | /** @} echo_lock */ |
| 327 | |
| 328 | /** \defgroup echo_cl_ops cl_object operations |
| 329 | * |
| 330 | * operations for cl_object |
| 331 | * |
| 332 | * @{ |
| 333 | */ |
| 334 | static int echo_page_init(const struct lu_env *env, struct cl_object *obj, |
Jinshan Xiong | 7addf40 | 2016-03-30 19:48:32 -0400 | [diff] [blame] | 335 | struct cl_page *page, pgoff_t index) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 336 | { |
| 337 | struct echo_page *ep = cl_object_page_slice(obj, page); |
| 338 | struct echo_object *eco = cl2echo_obj(obj); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 339 | |
Greg Kroah-Hartman | 5f47992 | 2016-04-11 09:30:50 -0700 | [diff] [blame] | 340 | get_page(page->cp_vmpage); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 341 | mutex_init(&ep->ep_lock); |
Jinshan Xiong | fd7444f | 2016-03-30 19:48:33 -0400 | [diff] [blame] | 342 | cl_page_slice_add(page, &ep->ep_cl, obj, index, &echo_page_ops); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 343 | atomic_inc(&eco->eo_npages); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 344 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 345 | } |
| 346 | |
| 347 | static int echo_io_init(const struct lu_env *env, struct cl_object *obj, |
| 348 | struct cl_io *io) |
| 349 | { |
| 350 | return 0; |
| 351 | } |
| 352 | |
| 353 | static int echo_lock_init(const struct lu_env *env, |
| 354 | struct cl_object *obj, struct cl_lock *lock, |
| 355 | const struct cl_io *unused) |
| 356 | { |
| 357 | struct echo_lock *el; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 358 | |
Amitoj Kaur Chawla | 38cf948 | 2016-02-26 14:24:41 +0530 | [diff] [blame] | 359 | el = kmem_cache_zalloc(echo_lock_kmem, GFP_NOFS); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 360 | if (el) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 361 | cl_lock_slice_add(lock, &el->el_cl, obj, &echo_lock_ops); |
| 362 | el->el_object = cl2echo_obj(obj); |
| 363 | INIT_LIST_HEAD(&el->el_chain); |
| 364 | atomic_set(&el->el_refcount, 0); |
| 365 | } |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 366 | return !el ? -ENOMEM : 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | static int echo_conf_set(const struct lu_env *env, struct cl_object *obj, |
| 370 | const struct cl_object_conf *conf) |
| 371 | { |
| 372 | return 0; |
| 373 | } |
| 374 | |
| 375 | static const struct cl_object_operations echo_cl_obj_ops = { |
| 376 | .coo_page_init = echo_page_init, |
| 377 | .coo_lock_init = echo_lock_init, |
| 378 | .coo_io_init = echo_io_init, |
| 379 | .coo_conf_set = echo_conf_set |
| 380 | }; |
Mike Rapoport | c9f6bb9 | 2015-10-13 16:03:42 +0300 | [diff] [blame] | 381 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 382 | /** @} echo_cl_ops */ |
| 383 | |
| 384 | /** \defgroup echo_lu_ops lu_object operations |
| 385 | * |
| 386 | * operations for echo lu object. |
| 387 | * |
| 388 | * @{ |
| 389 | */ |
| 390 | static int echo_object_init(const struct lu_env *env, struct lu_object *obj, |
| 391 | const struct lu_object_conf *conf) |
| 392 | { |
| 393 | struct echo_device *ed = cl2echo_dev(lu2cl_dev(obj->lo_dev)); |
| 394 | struct echo_client_obd *ec = ed->ed_ec; |
| 395 | struct echo_object *eco = cl2echo_obj(lu2cl(obj)); |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 396 | const struct cl_object_conf *cconf; |
| 397 | struct echo_object_conf *econf; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 398 | |
| 399 | if (ed->ed_next) { |
| 400 | struct lu_object *below; |
| 401 | struct lu_device *under; |
| 402 | |
| 403 | under = ed->ed_next; |
| 404 | below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, |
| 405 | under); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 406 | if (!below) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 407 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 408 | lu_object_add(obj, below); |
| 409 | } |
| 410 | |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 411 | cconf = lu2cl_conf(conf); |
| 412 | econf = cl2echo_conf(cconf); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 413 | |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 414 | LASSERT(econf->eoc_oinfo); |
| 415 | /* |
| 416 | * Transfer the oinfo pointer to eco that it won't be |
| 417 | * freed. |
| 418 | */ |
| 419 | eco->eo_oinfo = *econf->eoc_oinfo; |
| 420 | *econf->eoc_oinfo = NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 421 | |
| 422 | eco->eo_dev = ed; |
| 423 | atomic_set(&eco->eo_npages, 0); |
| 424 | cl_object_page_init(lu2cl(obj), sizeof(struct echo_page)); |
| 425 | |
| 426 | spin_lock(&ec->ec_lock); |
| 427 | list_add_tail(&eco->eo_obj_chain, &ec->ec_objects); |
| 428 | spin_unlock(&ec->ec_lock); |
| 429 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 430 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 431 | } |
| 432 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 433 | static void echo_object_free(const struct lu_env *env, struct lu_object *obj) |
| 434 | { |
| 435 | struct echo_object *eco = cl2echo_obj(lu2cl(obj)); |
| 436 | struct echo_client_obd *ec = eco->eo_dev->ed_ec; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 437 | |
| 438 | LASSERT(atomic_read(&eco->eo_npages) == 0); |
| 439 | |
| 440 | spin_lock(&ec->ec_lock); |
| 441 | list_del_init(&eco->eo_obj_chain); |
| 442 | spin_unlock(&ec->ec_lock); |
| 443 | |
| 444 | lu_object_fini(obj); |
| 445 | lu_object_header_fini(obj->lo_header); |
| 446 | |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 447 | kfree(eco->eo_oinfo); |
Mike Rapoport | 50d3036 | 2015-10-20 12:39:51 +0300 | [diff] [blame] | 448 | kmem_cache_free(echo_object_kmem, eco); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 449 | } |
| 450 | |
| 451 | static int echo_object_print(const struct lu_env *env, void *cookie, |
Oleg Drokin | 35d6c02 | 2016-02-26 01:50:08 -0500 | [diff] [blame] | 452 | lu_printer_t p, const struct lu_object *o) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 453 | { |
| 454 | struct echo_object *obj = cl2echo_obj(lu2cl(o)); |
| 455 | |
| 456 | return (*p)(env, cookie, "echoclient-object@%p", obj); |
| 457 | } |
| 458 | |
| 459 | static const struct lu_object_operations echo_lu_obj_ops = { |
| 460 | .loo_object_init = echo_object_init, |
| 461 | .loo_object_delete = NULL, |
| 462 | .loo_object_release = NULL, |
| 463 | .loo_object_free = echo_object_free, |
| 464 | .loo_object_print = echo_object_print, |
| 465 | .loo_object_invariant = NULL |
| 466 | }; |
Mike Rapoport | c9f6bb9 | 2015-10-13 16:03:42 +0300 | [diff] [blame] | 467 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 468 | /** @} echo_lu_ops */ |
| 469 | |
| 470 | /** \defgroup echo_lu_dev_ops lu_device operations |
| 471 | * |
| 472 | * Operations for echo lu device. |
| 473 | * |
| 474 | * @{ |
| 475 | */ |
| 476 | static struct lu_object *echo_object_alloc(const struct lu_env *env, |
| 477 | const struct lu_object_header *hdr, |
| 478 | struct lu_device *dev) |
| 479 | { |
| 480 | struct echo_object *eco; |
| 481 | struct lu_object *obj = NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 482 | |
| 483 | /* we're the top dev. */ |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 484 | LASSERT(!hdr); |
Amitoj Kaur Chawla | 38cf948 | 2016-02-26 14:24:41 +0530 | [diff] [blame] | 485 | eco = kmem_cache_zalloc(echo_object_kmem, GFP_NOFS); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 486 | if (eco) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 487 | struct cl_object_header *hdr = &eco->eo_hdr; |
| 488 | |
| 489 | obj = &echo_obj2cl(eco)->co_lu; |
| 490 | cl_object_header_init(hdr); |
Jinshan Xiong | 7addf40 | 2016-03-30 19:48:32 -0400 | [diff] [blame] | 491 | hdr->coh_page_bufsize = cfs_size_round(sizeof(struct cl_page)); |
| 492 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 493 | lu_object_init(obj, &hdr->coh_lu, dev); |
| 494 | lu_object_add_top(&hdr->coh_lu, obj); |
| 495 | |
| 496 | eco->eo_cl.co_ops = &echo_cl_obj_ops; |
| 497 | obj->lo_ops = &echo_lu_obj_ops; |
| 498 | } |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 499 | return obj; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 500 | } |
| 501 | |
Julia Lawall | 161106c | 2016-01-01 09:37:03 +0100 | [diff] [blame] | 502 | static const struct lu_device_operations echo_device_lu_ops = { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 503 | .ldo_object_alloc = echo_object_alloc, |
| 504 | }; |
| 505 | |
| 506 | /** @} echo_lu_dev_ops */ |
| 507 | |
Julia Lawall | 161106c | 2016-01-01 09:37:03 +0100 | [diff] [blame] | 508 | static const struct cl_device_operations echo_device_cl_ops = { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 509 | }; |
| 510 | |
| 511 | /** \defgroup echo_init Setup and teardown |
| 512 | * |
| 513 | * Init and fini functions for echo client. |
| 514 | * |
| 515 | * @{ |
| 516 | */ |
| 517 | static int echo_site_init(const struct lu_env *env, struct echo_device *ed) |
| 518 | { |
| 519 | struct cl_site *site = &ed->ed_site_myself; |
| 520 | int rc; |
| 521 | |
| 522 | /* initialize site */ |
| 523 | rc = cl_site_init(site, &ed->ed_cl); |
| 524 | if (rc) { |
Masanari Iida | c4f39553 | 2013-07-21 03:38:08 +0900 | [diff] [blame] | 525 | CERROR("Cannot initialize site for echo client(%d)\n", rc); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 526 | return rc; |
| 527 | } |
| 528 | |
| 529 | rc = lu_site_init_finish(&site->cs_lu); |
| 530 | if (rc) |
| 531 | return rc; |
| 532 | |
| 533 | ed->ed_site = site; |
| 534 | return 0; |
| 535 | } |
| 536 | |
| 537 | static void echo_site_fini(const struct lu_env *env, struct echo_device *ed) |
| 538 | { |
| 539 | if (ed->ed_site) { |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 540 | cl_site_fini(ed->ed_site); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 541 | ed->ed_site = NULL; |
| 542 | } |
| 543 | } |
| 544 | |
| 545 | static void *echo_thread_key_init(const struct lu_context *ctx, |
Oleg Drokin | 35d6c02 | 2016-02-26 01:50:08 -0500 | [diff] [blame] | 546 | struct lu_context_key *key) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 547 | { |
| 548 | struct echo_thread_info *info; |
| 549 | |
Amitoj Kaur Chawla | 38cf948 | 2016-02-26 14:24:41 +0530 | [diff] [blame] | 550 | info = kmem_cache_zalloc(echo_thread_kmem, GFP_NOFS); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 551 | if (!info) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 552 | info = ERR_PTR(-ENOMEM); |
| 553 | return info; |
| 554 | } |
| 555 | |
| 556 | static void echo_thread_key_fini(const struct lu_context *ctx, |
Oleg Drokin | 35d6c02 | 2016-02-26 01:50:08 -0500 | [diff] [blame] | 557 | struct lu_context_key *key, void *data) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 558 | { |
| 559 | struct echo_thread_info *info = data; |
Hatice ERTÜRK | ded9f90 | 2015-02-27 21:34:25 +0200 | [diff] [blame] | 560 | |
Mike Rapoport | 50d3036 | 2015-10-20 12:39:51 +0300 | [diff] [blame] | 561 | kmem_cache_free(echo_thread_kmem, info); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 562 | } |
| 563 | |
| 564 | static void echo_thread_key_exit(const struct lu_context *ctx, |
Oleg Drokin | 35d6c02 | 2016-02-26 01:50:08 -0500 | [diff] [blame] | 565 | struct lu_context_key *key, void *data) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 566 | { |
| 567 | } |
| 568 | |
| 569 | static struct lu_context_key echo_thread_key = { |
| 570 | .lct_tags = LCT_CL_THREAD, |
| 571 | .lct_init = echo_thread_key_init, |
| 572 | .lct_fini = echo_thread_key_fini, |
| 573 | .lct_exit = echo_thread_key_exit |
| 574 | }; |
| 575 | |
| 576 | static void *echo_session_key_init(const struct lu_context *ctx, |
Oleg Drokin | 35d6c02 | 2016-02-26 01:50:08 -0500 | [diff] [blame] | 577 | struct lu_context_key *key) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 578 | { |
| 579 | struct echo_session_info *session; |
| 580 | |
Amitoj Kaur Chawla | 38cf948 | 2016-02-26 14:24:41 +0530 | [diff] [blame] | 581 | session = kmem_cache_zalloc(echo_session_kmem, GFP_NOFS); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 582 | if (!session) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 583 | session = ERR_PTR(-ENOMEM); |
| 584 | return session; |
| 585 | } |
| 586 | |
| 587 | static void echo_session_key_fini(const struct lu_context *ctx, |
Oleg Drokin | 35d6c02 | 2016-02-26 01:50:08 -0500 | [diff] [blame] | 588 | struct lu_context_key *key, void *data) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 589 | { |
| 590 | struct echo_session_info *session = data; |
Hatice ERTÜRK | ded9f90 | 2015-02-27 21:34:25 +0200 | [diff] [blame] | 591 | |
Mike Rapoport | 50d3036 | 2015-10-20 12:39:51 +0300 | [diff] [blame] | 592 | kmem_cache_free(echo_session_kmem, session); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | static void echo_session_key_exit(const struct lu_context *ctx, |
Oleg Drokin | 35d6c02 | 2016-02-26 01:50:08 -0500 | [diff] [blame] | 596 | struct lu_context_key *key, void *data) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 597 | { |
| 598 | } |
| 599 | |
| 600 | static struct lu_context_key echo_session_key = { |
| 601 | .lct_tags = LCT_SESSION, |
| 602 | .lct_init = echo_session_key_init, |
| 603 | .lct_fini = echo_session_key_fini, |
| 604 | .lct_exit = echo_session_key_exit |
| 605 | }; |
| 606 | |
| 607 | LU_TYPE_INIT_FINI(echo, &echo_thread_key, &echo_session_key); |
| 608 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 609 | static struct lu_device *echo_device_alloc(const struct lu_env *env, |
| 610 | struct lu_device_type *t, |
| 611 | struct lustre_cfg *cfg) |
| 612 | { |
| 613 | struct lu_device *next; |
| 614 | struct echo_device *ed; |
| 615 | struct cl_device *cd; |
| 616 | struct obd_device *obd = NULL; /* to keep compiler happy */ |
| 617 | struct obd_device *tgt; |
| 618 | const char *tgt_type_name; |
Cihangir Akturk | 3726470 | 2016-04-09 21:47:44 +0300 | [diff] [blame] | 619 | int rc, err; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 620 | |
Julia Lawall | c5b8952 | 2015-05-01 17:51:14 +0200 | [diff] [blame] | 621 | ed = kzalloc(sizeof(*ed), GFP_NOFS); |
Julia Lawall | efeb257 | 2015-06-20 18:59:08 +0200 | [diff] [blame] | 622 | if (!ed) { |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 623 | rc = -ENOMEM; |
| 624 | goto out; |
| 625 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 626 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 627 | cd = &ed->ed_cl; |
| 628 | rc = cl_device_init(cd, t); |
| 629 | if (rc) |
Cihangir Akturk | 3726470 | 2016-04-09 21:47:44 +0300 | [diff] [blame] | 630 | goto out_free; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 631 | |
| 632 | cd->cd_lu_dev.ld_ops = &echo_device_lu_ops; |
| 633 | cd->cd_ops = &echo_device_cl_ops; |
| 634 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 635 | obd = class_name2obd(lustre_cfg_string(cfg, 0)); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 636 | LASSERT(obd); |
| 637 | LASSERT(env); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 638 | |
| 639 | tgt = class_name2obd(lustre_cfg_string(cfg, 1)); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 640 | if (!tgt) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 641 | CERROR("Can not find tgt device %s\n", |
Oleg Drokin | 35d6c02 | 2016-02-26 01:50:08 -0500 | [diff] [blame] | 642 | lustre_cfg_string(cfg, 1)); |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 643 | rc = -ENODEV; |
Cihangir Akturk | 3726470 | 2016-04-09 21:47:44 +0300 | [diff] [blame] | 644 | goto out_device_fini; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 645 | } |
| 646 | |
| 647 | next = tgt->obd_lu_dev; |
| 648 | if (!strcmp(tgt->obd_type->typ_name, LUSTRE_MDT_NAME)) { |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 649 | CERROR("echo MDT client must be run on server\n"); |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 650 | rc = -EOPNOTSUPP; |
Cihangir Akturk | 3726470 | 2016-04-09 21:47:44 +0300 | [diff] [blame] | 651 | goto out_device_fini; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 652 | } |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 653 | |
| 654 | rc = echo_site_init(env, ed); |
| 655 | if (rc) |
Cihangir Akturk | 3726470 | 2016-04-09 21:47:44 +0300 | [diff] [blame] | 656 | goto out_device_fini; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 657 | |
| 658 | rc = echo_client_setup(env, obd, cfg); |
| 659 | if (rc) |
Cihangir Akturk | 3726470 | 2016-04-09 21:47:44 +0300 | [diff] [blame] | 660 | goto out_site_fini; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 661 | |
| 662 | ed->ed_ec = &obd->u.echo_client; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 663 | |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 664 | /* if echo client is to be stacked upon ost device, the next is |
Oleg Drokin | 35f0d1a | 2016-02-24 22:00:36 -0500 | [diff] [blame] | 665 | * NULL since ost is not a clio device so far |
| 666 | */ |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 667 | if (next && !lu_device_is_cl(next)) |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 668 | next = NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 669 | |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 670 | tgt_type_name = tgt->obd_type->typ_name; |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 671 | if (next) { |
| 672 | if (next->ld_site) { |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 673 | rc = -EBUSY; |
Cihangir Akturk | 3726470 | 2016-04-09 21:47:44 +0300 | [diff] [blame] | 674 | goto out_cleanup; |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 675 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 676 | |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 677 | next->ld_site = &ed->ed_site->cs_lu; |
| 678 | rc = next->ld_type->ldt_ops->ldto_device_init(env, next, |
| 679 | next->ld_type->ldt_name, |
| 680 | NULL); |
| 681 | if (rc) |
Cihangir Akturk | 3726470 | 2016-04-09 21:47:44 +0300 | [diff] [blame] | 682 | goto out_cleanup; |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 683 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 684 | } else { |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 685 | LASSERT(strcmp(tgt_type_name, LUSTRE_OST_NAME) == 0); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 686 | } |
| 687 | |
| 688 | ed->ed_next = next; |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 689 | return &cd->cd_lu_dev; |
Cihangir Akturk | 3726470 | 2016-04-09 21:47:44 +0300 | [diff] [blame] | 690 | |
| 691 | out_cleanup: |
| 692 | err = echo_client_cleanup(obd); |
| 693 | if (err) |
| 694 | CERROR("Cleanup obd device %s error(%d)\n", |
| 695 | obd->obd_name, err); |
| 696 | out_site_fini: |
| 697 | echo_site_fini(env, ed); |
| 698 | out_device_fini: |
| 699 | cl_device_fini(&ed->ed_cl); |
| 700 | out_free: |
| 701 | kfree(ed); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 702 | out: |
Julia Lawall | fbe7c6c | 2014-08-26 22:00:33 +0200 | [diff] [blame] | 703 | return ERR_PTR(rc); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 704 | } |
| 705 | |
| 706 | static int echo_device_init(const struct lu_env *env, struct lu_device *d, |
Oleg Drokin | 35d6c02 | 2016-02-26 01:50:08 -0500 | [diff] [blame] | 707 | const char *name, struct lu_device *next) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 708 | { |
| 709 | LBUG(); |
| 710 | return 0; |
| 711 | } |
| 712 | |
| 713 | static struct lu_device *echo_device_fini(const struct lu_env *env, |
| 714 | struct lu_device *d) |
| 715 | { |
| 716 | struct echo_device *ed = cl2echo_dev(lu2cl_dev(d)); |
| 717 | struct lu_device *next = ed->ed_next; |
| 718 | |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 719 | while (next) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 720 | next = next->ld_type->ldt_ops->ldto_device_fini(env, next); |
| 721 | return NULL; |
| 722 | } |
| 723 | |
| 724 | static void echo_lock_release(const struct lu_env *env, |
| 725 | struct echo_lock *ecl, |
| 726 | int still_used) |
| 727 | { |
| 728 | struct cl_lock *clk = echo_lock2cl(ecl); |
| 729 | |
Jinshan Xiong | 06563b5 | 2016-03-30 19:48:40 -0400 | [diff] [blame] | 730 | cl_lock_release(env, clk); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | static struct lu_device *echo_device_free(const struct lu_env *env, |
| 734 | struct lu_device *d) |
| 735 | { |
| 736 | struct echo_device *ed = cl2echo_dev(lu2cl_dev(d)); |
| 737 | struct echo_client_obd *ec = ed->ed_ec; |
| 738 | struct echo_object *eco; |
| 739 | struct lu_device *next = ed->ed_next; |
| 740 | |
| 741 | CDEBUG(D_INFO, "echo device:%p is going to be freed, next = %p\n", |
| 742 | ed, next); |
| 743 | |
| 744 | lu_site_purge(env, &ed->ed_site->cs_lu, -1); |
| 745 | |
| 746 | /* check if there are objects still alive. |
| 747 | * It shouldn't have any object because lu_site_purge would cleanup |
| 748 | * all of cached objects. Anyway, probably the echo device is being |
| 749 | * parallelly accessed. |
| 750 | */ |
| 751 | spin_lock(&ec->ec_lock); |
| 752 | list_for_each_entry(eco, &ec->ec_objects, eo_obj_chain) |
| 753 | eco->eo_deleted = 1; |
| 754 | spin_unlock(&ec->ec_lock); |
| 755 | |
| 756 | /* purge again */ |
| 757 | lu_site_purge(env, &ed->ed_site->cs_lu, -1); |
| 758 | |
| 759 | CDEBUG(D_INFO, |
| 760 | "Waiting for the reference of echo object to be dropped\n"); |
| 761 | |
| 762 | /* Wait for the last reference to be dropped. */ |
| 763 | spin_lock(&ec->ec_lock); |
| 764 | while (!list_empty(&ec->ec_objects)) { |
| 765 | spin_unlock(&ec->ec_lock); |
Joe Perches | 2d00bd1 | 2014-11-23 11:28:50 -0800 | [diff] [blame] | 766 | CERROR("echo_client still has objects at cleanup time, wait for 1 second\n"); |
Peng Tao | 18fd5ba | 2014-03-18 21:05:55 +0800 | [diff] [blame] | 767 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 768 | schedule_timeout(cfs_time_seconds(1)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 769 | lu_site_purge(env, &ed->ed_site->cs_lu, -1); |
| 770 | spin_lock(&ec->ec_lock); |
| 771 | } |
| 772 | spin_unlock(&ec->ec_lock); |
| 773 | |
| 774 | LASSERT(list_empty(&ec->ec_locks)); |
| 775 | |
| 776 | CDEBUG(D_INFO, "No object exists, exiting...\n"); |
| 777 | |
| 778 | echo_client_cleanup(d->ld_obd); |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 779 | |
| 780 | while (next) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 781 | next = next->ld_type->ldt_ops->ldto_device_free(env, next); |
| 782 | |
| 783 | LASSERT(ed->ed_site == lu2cl_site(d->ld_site)); |
| 784 | echo_site_fini(env, ed); |
| 785 | cl_device_fini(&ed->ed_cl); |
Julia Lawall | c5b8952 | 2015-05-01 17:51:14 +0200 | [diff] [blame] | 786 | kfree(ed); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 787 | |
| 788 | return NULL; |
| 789 | } |
| 790 | |
| 791 | static const struct lu_device_type_operations echo_device_type_ops = { |
| 792 | .ldto_init = echo_type_init, |
| 793 | .ldto_fini = echo_type_fini, |
| 794 | |
| 795 | .ldto_start = echo_type_start, |
| 796 | .ldto_stop = echo_type_stop, |
| 797 | |
| 798 | .ldto_device_alloc = echo_device_alloc, |
| 799 | .ldto_device_free = echo_device_free, |
| 800 | .ldto_device_init = echo_device_init, |
| 801 | .ldto_device_fini = echo_device_fini |
| 802 | }; |
| 803 | |
| 804 | static struct lu_device_type echo_device_type = { |
| 805 | .ldt_tags = LU_DEVICE_CL, |
| 806 | .ldt_name = LUSTRE_ECHO_CLIENT_NAME, |
| 807 | .ldt_ops = &echo_device_type_ops, |
Peng Tao | 5bd07d9 | 2014-08-30 17:12:41 -0400 | [diff] [blame] | 808 | .ldt_ctx_tags = LCT_CL_THREAD, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 809 | }; |
Mike Rapoport | c9f6bb9 | 2015-10-13 16:03:42 +0300 | [diff] [blame] | 810 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 811 | /** @} echo_init */ |
| 812 | |
| 813 | /** \defgroup echo_exports Exported operations |
| 814 | * |
| 815 | * exporting functions to echo client |
| 816 | * |
| 817 | * @{ |
| 818 | */ |
| 819 | |
| 820 | /* Interfaces to echo client obd device */ |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 821 | static struct echo_object * |
| 822 | cl_echo_object_find(struct echo_device *d, const struct ost_id *oi) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 823 | { |
| 824 | struct lu_env *env; |
| 825 | struct echo_thread_info *info; |
| 826 | struct echo_object_conf *conf; |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 827 | struct lov_oinfo *oinfo = NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 828 | struct echo_object *eco; |
| 829 | struct cl_object *obj; |
| 830 | struct lu_fid *fid; |
| 831 | int refcheck; |
| 832 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 833 | |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 834 | LASSERTF(ostid_id(oi), DOSTID "\n", POSTID(oi)); |
| 835 | LASSERTF(ostid_seq(oi) == FID_SEQ_ECHO, DOSTID "\n", POSTID(oi)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 836 | |
| 837 | /* Never return an object if the obd is to be freed. */ |
| 838 | if (echo_dev2cl(d)->cd_lu_dev.ld_obd->obd_stopping) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 839 | return ERR_PTR(-ENODEV); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 840 | |
| 841 | env = cl_env_get(&refcheck); |
| 842 | if (IS_ERR(env)) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 843 | return (void *)env; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 844 | |
| 845 | info = echo_env_info(env); |
| 846 | conf = &info->eti_conf; |
| 847 | if (d->ed_next) { |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 848 | oinfo = kzalloc(sizeof(*oinfo), GFP_NOFS); |
| 849 | if (!oinfo) { |
| 850 | eco = ERR_PTR(-ENOMEM); |
| 851 | goto out; |
| 852 | } |
Hatice ERTÜRK | ded9f90 | 2015-02-27 21:34:25 +0200 | [diff] [blame] | 853 | |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 854 | oinfo->loi_oi = *oi; |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 855 | conf->eoc_cl.u.coc_oinfo = oinfo; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 856 | } |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 857 | |
| 858 | /* |
| 859 | * If echo_object_init() is successful then ownership of oinfo |
| 860 | * is transferred to the object. |
| 861 | */ |
| 862 | conf->eoc_oinfo = &oinfo; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 863 | |
| 864 | fid = &info->eti_fid; |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 865 | rc = ostid_to_fid(fid, (struct ost_id *)oi, 0); |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 866 | if (rc != 0) { |
| 867 | eco = ERR_PTR(rc); |
| 868 | goto out; |
| 869 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 870 | |
| 871 | /* In the function below, .hs_keycmp resolves to |
Oleg Drokin | 35f0d1a | 2016-02-24 22:00:36 -0500 | [diff] [blame] | 872 | * lu_obj_hop_keycmp() |
| 873 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 874 | /* coverity[overrun-buffer-val] */ |
| 875 | obj = cl_object_find(env, echo_dev2cl(d), fid, &conf->eoc_cl); |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 876 | if (IS_ERR(obj)) { |
| 877 | eco = (void *)obj; |
| 878 | goto out; |
| 879 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 880 | |
| 881 | eco = cl2echo_obj(obj); |
| 882 | if (eco->eo_deleted) { |
| 883 | cl_object_put(env, obj); |
| 884 | eco = ERR_PTR(-EAGAIN); |
| 885 | } |
| 886 | |
| 887 | out: |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 888 | kfree(oinfo); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 889 | cl_env_put(env, &refcheck); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 890 | return eco; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 891 | } |
| 892 | |
| 893 | static int cl_echo_object_put(struct echo_object *eco) |
| 894 | { |
| 895 | struct lu_env *env; |
| 896 | struct cl_object *obj = echo_obj2cl(eco); |
| 897 | int refcheck; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 898 | |
| 899 | env = cl_env_get(&refcheck); |
| 900 | if (IS_ERR(env)) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 901 | return PTR_ERR(env); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 902 | |
| 903 | /* an external function to kill an object? */ |
| 904 | if (eco->eo_deleted) { |
| 905 | struct lu_object_header *loh = obj->co_lu.lo_header; |
Hatice ERTÜRK | ded9f90 | 2015-02-27 21:34:25 +0200 | [diff] [blame] | 906 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 907 | LASSERT(&eco->eo_hdr == luh2coh(loh)); |
| 908 | set_bit(LU_OBJECT_HEARD_BANSHEE, &loh->loh_flags); |
| 909 | } |
| 910 | |
| 911 | cl_object_put(env, obj); |
| 912 | cl_env_put(env, &refcheck); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 913 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 914 | } |
| 915 | |
| 916 | static int cl_echo_enqueue0(struct lu_env *env, struct echo_object *eco, |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 917 | u64 start, u64 end, int mode, |
Yogeswaran Thulasidoss | d841438 | 2015-03-16 08:21:50 +0530 | [diff] [blame] | 918 | __u64 *cookie, __u32 enqflags) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 919 | { |
| 920 | struct cl_io *io; |
| 921 | struct cl_lock *lck; |
| 922 | struct cl_object *obj; |
| 923 | struct cl_lock_descr *descr; |
| 924 | struct echo_thread_info *info; |
| 925 | int rc = -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 926 | |
| 927 | info = echo_env_info(env); |
| 928 | io = &info->eti_io; |
Jinshan Xiong | 06563b5 | 2016-03-30 19:48:40 -0400 | [diff] [blame] | 929 | lck = &info->eti_lock; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 930 | obj = echo_obj2cl(eco); |
| 931 | |
Jinshan Xiong | 06563b5 | 2016-03-30 19:48:40 -0400 | [diff] [blame] | 932 | memset(lck, 0, sizeof(*lck)); |
| 933 | descr = &lck->cll_descr; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 934 | descr->cld_obj = obj; |
| 935 | descr->cld_start = cl_index(obj, start); |
| 936 | descr->cld_end = cl_index(obj, end); |
| 937 | descr->cld_mode = mode == LCK_PW ? CLM_WRITE : CLM_READ; |
| 938 | descr->cld_enq_flags = enqflags; |
| 939 | io->ci_obj = obj; |
| 940 | |
Jinshan Xiong | 06563b5 | 2016-03-30 19:48:40 -0400 | [diff] [blame] | 941 | rc = cl_lock_request(env, io, lck); |
| 942 | if (rc == 0) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 943 | struct echo_client_obd *ec = eco->eo_dev->ed_ec; |
| 944 | struct echo_lock *el; |
| 945 | |
Jinshan Xiong | 06563b5 | 2016-03-30 19:48:40 -0400 | [diff] [blame] | 946 | el = cl2echo_lock(cl_lock_at(lck, &echo_device_type)); |
| 947 | spin_lock(&ec->ec_lock); |
| 948 | if (list_empty(&el->el_chain)) { |
| 949 | list_add(&el->el_chain, &ec->ec_locks); |
| 950 | el->el_cookie = ++ec->ec_unique; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 951 | } |
Jinshan Xiong | 06563b5 | 2016-03-30 19:48:40 -0400 | [diff] [blame] | 952 | atomic_inc(&el->el_refcount); |
| 953 | *cookie = el->el_cookie; |
| 954 | spin_unlock(&ec->ec_lock); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 955 | } |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 956 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 957 | } |
| 958 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 959 | static int cl_echo_cancel0(struct lu_env *env, struct echo_device *ed, |
| 960 | __u64 cookie) |
| 961 | { |
| 962 | struct echo_client_obd *ec = ed->ed_ec; |
| 963 | struct echo_lock *ecl = NULL; |
| 964 | struct list_head *el; |
| 965 | int found = 0, still_used = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 966 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 967 | spin_lock(&ec->ec_lock); |
Dilek Uzulmez | cb7e9f7 | 2015-02-28 00:54:17 +0200 | [diff] [blame] | 968 | list_for_each(el, &ec->ec_locks) { |
| 969 | ecl = list_entry(el, struct echo_lock, el_chain); |
Greg Kroah-Hartman | 55f5a82 | 2014-07-12 20:26:07 -0700 | [diff] [blame] | 970 | CDEBUG(D_INFO, "ecl: %p, cookie: %#llx\n", ecl, ecl->el_cookie); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 971 | found = (ecl->el_cookie == cookie); |
| 972 | if (found) { |
| 973 | if (atomic_dec_and_test(&ecl->el_refcount)) |
| 974 | list_del_init(&ecl->el_chain); |
| 975 | else |
| 976 | still_used = 1; |
| 977 | break; |
| 978 | } |
| 979 | } |
| 980 | spin_unlock(&ec->ec_lock); |
| 981 | |
| 982 | if (!found) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 983 | return -ENOENT; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 984 | |
| 985 | echo_lock_release(env, ecl, still_used); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 986 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 987 | } |
| 988 | |
Jinshan Xiong | 77605e4 | 2016-03-30 19:48:30 -0400 | [diff] [blame] | 989 | static void echo_commit_callback(const struct lu_env *env, struct cl_io *io, |
| 990 | struct cl_page *page) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 991 | { |
Jinshan Xiong | 77605e4 | 2016-03-30 19:48:30 -0400 | [diff] [blame] | 992 | struct echo_thread_info *info; |
| 993 | struct cl_2queue *queue; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 994 | |
Jinshan Xiong | 77605e4 | 2016-03-30 19:48:30 -0400 | [diff] [blame] | 995 | info = echo_env_info(env); |
| 996 | LASSERT(io == &info->eti_io); |
Hatice ERTÜRK | ded9f90 | 2015-02-27 21:34:25 +0200 | [diff] [blame] | 997 | |
Jinshan Xiong | 77605e4 | 2016-03-30 19:48:30 -0400 | [diff] [blame] | 998 | queue = &info->eti_queue; |
| 999 | cl_page_list_add(&queue->c2_qout, page); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1000 | } |
| 1001 | |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 1002 | static int cl_echo_object_brw(struct echo_object *eco, int rw, u64 offset, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1003 | struct page **pages, int npages, int async) |
| 1004 | { |
| 1005 | struct lu_env *env; |
| 1006 | struct echo_thread_info *info; |
| 1007 | struct cl_object *obj = echo_obj2cl(eco); |
| 1008 | struct echo_device *ed = eco->eo_dev; |
| 1009 | struct cl_2queue *queue; |
| 1010 | struct cl_io *io; |
| 1011 | struct cl_page *clp; |
| 1012 | struct lustre_handle lh = { 0 }; |
Dmitry Eremin | fdeb14f | 2016-09-18 16:38:29 -0400 | [diff] [blame] | 1013 | size_t page_size = cl_page_size(obj); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1014 | int refcheck; |
| 1015 | int rc; |
| 1016 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1017 | |
Oleg Drokin | 616387e | 2016-03-30 19:48:23 -0400 | [diff] [blame] | 1018 | LASSERT((offset & ~PAGE_MASK) == 0); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 1019 | LASSERT(ed->ed_next); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1020 | env = cl_env_get(&refcheck); |
| 1021 | if (IS_ERR(env)) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1022 | return PTR_ERR(env); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1023 | |
| 1024 | info = echo_env_info(env); |
| 1025 | io = &info->eti_io; |
| 1026 | queue = &info->eti_queue; |
| 1027 | |
| 1028 | cl_2queue_init(queue); |
| 1029 | |
| 1030 | io->ci_ignore_layout = 1; |
| 1031 | rc = cl_io_init(env, io, CIT_MISC, obj); |
| 1032 | if (rc < 0) |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1033 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1034 | LASSERT(rc == 0); |
| 1035 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1036 | rc = cl_echo_enqueue0(env, eco, offset, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1037 | offset + npages * PAGE_SIZE - 1, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1038 | rw == READ ? LCK_PR : LCK_PW, &lh.cookie, |
| 1039 | CEF_NEVER); |
| 1040 | if (rc < 0) |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1041 | goto error_lock; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1042 | |
| 1043 | for (i = 0; i < npages; i++) { |
| 1044 | LASSERT(pages[i]); |
| 1045 | clp = cl_page_find(env, obj, cl_index(obj, offset), |
| 1046 | pages[i], CPT_TRANSIENT); |
| 1047 | if (IS_ERR(clp)) { |
| 1048 | rc = PTR_ERR(clp); |
| 1049 | break; |
| 1050 | } |
| 1051 | LASSERT(clp->cp_type == CPT_TRANSIENT); |
| 1052 | |
| 1053 | rc = cl_page_own(env, io, clp); |
| 1054 | if (rc) { |
| 1055 | LASSERT(clp->cp_state == CPS_FREEING); |
| 1056 | cl_page_put(env, clp); |
| 1057 | break; |
| 1058 | } |
Shivani Bhardwaj | 53f1a12 | 2015-11-11 15:43:28 +0530 | [diff] [blame] | 1059 | /* |
| 1060 | * Add a page to the incoming page list of 2-queue. |
| 1061 | */ |
| 1062 | cl_page_list_add(&queue->c2_qin, clp); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1063 | |
| 1064 | /* drop the reference count for cl_page_find, so that the page |
Oleg Drokin | 35f0d1a | 2016-02-24 22:00:36 -0500 | [diff] [blame] | 1065 | * will be freed in cl_2queue_fini. |
| 1066 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1067 | cl_page_put(env, clp); |
| 1068 | cl_page_clip(env, clp, 0, page_size); |
| 1069 | |
| 1070 | offset += page_size; |
| 1071 | } |
| 1072 | |
| 1073 | if (rc == 0) { |
| 1074 | enum cl_req_type typ = rw == READ ? CRT_READ : CRT_WRITE; |
| 1075 | |
| 1076 | async = async && (typ == CRT_WRITE); |
| 1077 | if (async) |
Jinshan Xiong | 77605e4 | 2016-03-30 19:48:30 -0400 | [diff] [blame] | 1078 | rc = cl_io_commit_async(env, io, &queue->c2_qin, |
| 1079 | 0, PAGE_SIZE, |
| 1080 | echo_commit_callback); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1081 | else |
| 1082 | rc = cl_io_submit_sync(env, io, typ, queue, 0); |
| 1083 | CDEBUG(D_INFO, "echo_client %s write returns %d\n", |
| 1084 | async ? "async" : "sync", rc); |
| 1085 | } |
| 1086 | |
| 1087 | cl_echo_cancel0(env, ed, lh.cookie); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1088 | error_lock: |
| 1089 | cl_2queue_discard(env, io, queue); |
| 1090 | cl_2queue_disown(env, io, queue); |
| 1091 | cl_2queue_fini(env, queue); |
| 1092 | cl_io_fini(env, io); |
| 1093 | out: |
| 1094 | cl_env_put(env, &refcheck); |
| 1095 | return rc; |
| 1096 | } |
Mike Rapoport | c9f6bb9 | 2015-10-13 16:03:42 +0300 | [diff] [blame] | 1097 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1098 | /** @} echo_exports */ |
| 1099 | |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 1100 | static u64 last_object_id; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1101 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1102 | static int echo_create_object(const struct lu_env *env, struct echo_device *ed, |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1103 | struct obdo *oa, struct obd_trans_info *oti) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1104 | { |
| 1105 | struct echo_object *eco; |
| 1106 | struct echo_client_obd *ec = ed->ed_ec; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1107 | int rc; |
| 1108 | int created = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1109 | |
Oleg Drokin | 01de911 | 2016-02-10 13:00:19 -0500 | [diff] [blame] | 1110 | if (!(oa->o_valid & OBD_MD_FLID) || |
| 1111 | !(oa->o_valid & OBD_MD_FLGROUP) || |
| 1112 | !fid_seq_is_echo(ostid_seq(&oa->o_oi))) { |
| 1113 | CERROR("invalid oid " DOSTID "\n", POSTID(&oa->o_oi)); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1114 | return -EINVAL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1115 | } |
| 1116 | |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 1117 | if (!ostid_id(&oa->o_oi)) |
| 1118 | ostid_set_id(&oa->o_oi, ++last_object_id); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1119 | |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 1120 | rc = obd_create(env, ec->ec_exp, oa, oti); |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1121 | if (rc != 0) { |
| 1122 | CERROR("Cannot create objects: rc = %d\n", rc); |
| 1123 | goto failed; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1124 | } |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1125 | created = 1; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1126 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1127 | oa->o_valid |= OBD_MD_FLID; |
| 1128 | |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 1129 | eco = cl_echo_object_find(ed, &oa->o_oi); |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1130 | if (IS_ERR(eco)) { |
| 1131 | rc = PTR_ERR(eco); |
| 1132 | goto failed; |
| 1133 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1134 | cl_echo_object_put(eco); |
| 1135 | |
| 1136 | CDEBUG(D_INFO, "oa oid "DOSTID"\n", POSTID(&oa->o_oi)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1137 | |
| 1138 | failed: |
| 1139 | if (created && rc) |
John L. Hammond | 3f06207 | 2016-09-18 16:38:12 -0400 | [diff] [blame] | 1140 | obd_destroy(env, ec->ec_exp, oa, oti); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1141 | if (rc) |
| 1142 | CERROR("create object failed with: rc = %d\n", rc); |
Julia Lawall | fbe7c6c | 2014-08-26 22:00:33 +0200 | [diff] [blame] | 1143 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1144 | } |
| 1145 | |
| 1146 | static int echo_get_object(struct echo_object **ecop, struct echo_device *ed, |
| 1147 | struct obdo *oa) |
| 1148 | { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1149 | struct echo_object *eco; |
| 1150 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1151 | |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 1152 | if (!(oa->o_valid & OBD_MD_FLID) || !(oa->o_valid & OBD_MD_FLGROUP) || |
| 1153 | !ostid_id(&oa->o_oi)) { |
| 1154 | CERROR("invalid oid " DOSTID "\n", POSTID(&oa->o_oi)); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1155 | return -EINVAL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1156 | } |
| 1157 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1158 | rc = 0; |
John L. Hammond | 972e54a | 2016-09-18 16:38:11 -0400 | [diff] [blame] | 1159 | eco = cl_echo_object_find(ed, &oa->o_oi); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1160 | if (!IS_ERR(eco)) |
| 1161 | *ecop = eco; |
| 1162 | else |
| 1163 | rc = PTR_ERR(eco); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1164 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1165 | } |
| 1166 | |
| 1167 | static void echo_put_object(struct echo_object *eco) |
| 1168 | { |
James Nunez | 19b2056 | 2016-03-07 18:10:21 -0500 | [diff] [blame] | 1169 | int rc; |
| 1170 | |
| 1171 | rc = cl_echo_object_put(eco); |
| 1172 | if (rc) |
| 1173 | CERROR("%s: echo client drop an object failed: rc = %d\n", |
| 1174 | eco->eo_dev->ed_ec->ec_exp->exp_obd->obd_name, rc); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1175 | } |
| 1176 | |
| 1177 | static void |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1178 | echo_client_page_debug_setup(struct page *page, int rw, u64 id, |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 1179 | u64 offset, u64 count) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1180 | { |
| 1181 | char *addr; |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 1182 | u64 stripe_off; |
| 1183 | u64 stripe_id; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1184 | int delta; |
| 1185 | |
| 1186 | /* no partial pages on the client */ |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1187 | LASSERT(count == PAGE_SIZE); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1188 | |
| 1189 | addr = kmap(page); |
| 1190 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1191 | for (delta = 0; delta < PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1192 | if (rw == OBD_BRW_WRITE) { |
| 1193 | stripe_off = offset + delta; |
| 1194 | stripe_id = id; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1195 | } else { |
| 1196 | stripe_off = 0xdeadbeef00c0ffeeULL; |
| 1197 | stripe_id = 0xdeadbeef00c0ffeeULL; |
| 1198 | } |
| 1199 | block_debug_setup(addr + delta, OBD_ECHO_BLOCK_SIZE, |
| 1200 | stripe_off, stripe_id); |
| 1201 | } |
| 1202 | |
| 1203 | kunmap(page); |
| 1204 | } |
| 1205 | |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1206 | static int echo_client_page_debug_check(struct page *page, u64 id, |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 1207 | u64 offset, u64 count) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1208 | { |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 1209 | u64 stripe_off; |
| 1210 | u64 stripe_id; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1211 | char *addr; |
| 1212 | int delta; |
| 1213 | int rc; |
| 1214 | int rc2; |
| 1215 | |
| 1216 | /* no partial pages on the client */ |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1217 | LASSERT(count == PAGE_SIZE); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1218 | |
| 1219 | addr = kmap(page); |
| 1220 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1221 | for (rc = delta = 0; delta < PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1222 | stripe_off = offset + delta; |
| 1223 | stripe_id = id; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1224 | |
| 1225 | rc2 = block_debug_check("test_brw", |
| 1226 | addr + delta, OBD_ECHO_BLOCK_SIZE, |
| 1227 | stripe_off, stripe_id); |
| 1228 | if (rc2 != 0) { |
Yogeswaran Thulasidoss | d841438 | 2015-03-16 08:21:50 +0530 | [diff] [blame] | 1229 | CERROR("Error in echo object %#llx\n", id); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1230 | rc = rc2; |
| 1231 | } |
| 1232 | } |
| 1233 | |
| 1234 | kunmap(page); |
| 1235 | return rc; |
| 1236 | } |
| 1237 | |
| 1238 | static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa, |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 1239 | struct echo_object *eco, u64 offset, |
| 1240 | u64 count, int async, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1241 | struct obd_trans_info *oti) |
| 1242 | { |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 1243 | u32 npages; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1244 | struct brw_page *pga; |
| 1245 | struct brw_page *pgp; |
| 1246 | struct page **pages; |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 1247 | u64 off; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1248 | int i; |
| 1249 | int rc; |
| 1250 | int verify; |
Vitaly Osipov | cad7aa1 | 2014-04-22 23:25:21 +1000 | [diff] [blame] | 1251 | gfp_t gfp_mask; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1252 | int brw_flags = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1253 | |
| 1254 | verify = (ostid_id(&oa->o_oi) != ECHO_PERSISTENT_OBJID && |
| 1255 | (oa->o_valid & OBD_MD_FLFLAGS) != 0 && |
| 1256 | (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0); |
| 1257 | |
Mel Gorman | 4011337 | 2015-11-06 16:28:25 -0800 | [diff] [blame] | 1258 | gfp_mask = ((ostid_id(&oa->o_oi) & 2) == 0) ? GFP_KERNEL : GFP_HIGHUSER; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1259 | |
| 1260 | LASSERT(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1261 | |
| 1262 | if (count <= 0 || |
Oleg Drokin | 616387e | 2016-03-30 19:48:23 -0400 | [diff] [blame] | 1263 | (count & (~PAGE_MASK)) != 0) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1264 | return -EINVAL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1265 | |
| 1266 | /* XXX think again with misaligned I/O */ |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1267 | npages = count >> PAGE_SHIFT; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1268 | |
| 1269 | if (rw == OBD_BRW_WRITE) |
| 1270 | brw_flags = OBD_BRW_ASYNC; |
| 1271 | |
Julia Lawall | c5b8952 | 2015-05-01 17:51:14 +0200 | [diff] [blame] | 1272 | pga = kcalloc(npages, sizeof(*pga), GFP_NOFS); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 1273 | if (!pga) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1274 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1275 | |
Julia Lawall | c5b8952 | 2015-05-01 17:51:14 +0200 | [diff] [blame] | 1276 | pages = kcalloc(npages, sizeof(*pages), GFP_NOFS); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 1277 | if (!pages) { |
Julia Lawall | c5b8952 | 2015-05-01 17:51:14 +0200 | [diff] [blame] | 1278 | kfree(pga); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1279 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1280 | } |
| 1281 | |
| 1282 | for (i = 0, pgp = pga, off = offset; |
| 1283 | i < npages; |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1284 | i++, pgp++, off += PAGE_SIZE) { |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 1285 | LASSERT(!pgp->pg); /* for cleanup */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1286 | |
| 1287 | rc = -ENOMEM; |
Mike Rapoport | 0c52e42 | 2015-10-26 10:06:29 +0200 | [diff] [blame] | 1288 | pgp->pg = alloc_page(gfp_mask); |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 1289 | if (!pgp->pg) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1290 | goto out; |
| 1291 | |
| 1292 | pages[i] = pgp->pg; |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1293 | pgp->count = PAGE_SIZE; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1294 | pgp->off = off; |
| 1295 | pgp->flag = brw_flags; |
| 1296 | |
| 1297 | if (verify) |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1298 | echo_client_page_debug_setup(pgp->pg, rw, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1299 | ostid_id(&oa->o_oi), off, |
| 1300 | pgp->count); |
| 1301 | } |
| 1302 | |
| 1303 | /* brw mode can only be used at client */ |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 1304 | LASSERT(ed->ed_next); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1305 | rc = cl_echo_object_brw(eco, rw, offset, pages, npages, async); |
| 1306 | |
| 1307 | out: |
| 1308 | if (rc != 0 || rw != OBD_BRW_READ) |
| 1309 | verify = 0; |
| 1310 | |
| 1311 | for (i = 0, pgp = pga; i < npages; i++, pgp++) { |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 1312 | if (!pgp->pg) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1313 | continue; |
| 1314 | |
| 1315 | if (verify) { |
| 1316 | int vrc; |
Hatice ERTÜRK | ded9f90 | 2015-02-27 21:34:25 +0200 | [diff] [blame] | 1317 | |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1318 | vrc = echo_client_page_debug_check(pgp->pg, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1319 | ostid_id(&oa->o_oi), |
| 1320 | pgp->off, pgp->count); |
| 1321 | if (vrc != 0 && rc == 0) |
| 1322 | rc = vrc; |
| 1323 | } |
Mike Rapoport | 0c52e42 | 2015-10-26 10:06:29 +0200 | [diff] [blame] | 1324 | __free_page(pgp->pg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1325 | } |
Julia Lawall | c5b8952 | 2015-05-01 17:51:14 +0200 | [diff] [blame] | 1326 | kfree(pga); |
| 1327 | kfree(pages); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1328 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1329 | } |
| 1330 | |
| 1331 | static int echo_client_prep_commit(const struct lu_env *env, |
| 1332 | struct obd_export *exp, int rw, |
| 1333 | struct obdo *oa, struct echo_object *eco, |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 1334 | u64 offset, u64 count, |
| 1335 | u64 batch, struct obd_trans_info *oti, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1336 | int async) |
| 1337 | { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1338 | struct obd_ioobj ioo; |
| 1339 | struct niobuf_local *lnb; |
| 1340 | struct niobuf_remote *rnb; |
Oleg Drokin | 21aef7d | 2014-08-15 12:55:56 -0400 | [diff] [blame] | 1341 | u64 off; |
| 1342 | u64 npages, tot_pages; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1343 | int i, ret = 0, brw_flags = 0; |
| 1344 | |
Oleg Drokin | 616387e | 2016-03-30 19:48:23 -0400 | [diff] [blame] | 1345 | if (count <= 0 || (count & (~PAGE_MASK)) != 0) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1346 | return -EINVAL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1347 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1348 | npages = batch >> PAGE_SHIFT; |
| 1349 | tot_pages = count >> PAGE_SHIFT; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1350 | |
Julia Lawall | c5b8952 | 2015-05-01 17:51:14 +0200 | [diff] [blame] | 1351 | lnb = kcalloc(npages, sizeof(struct niobuf_local), GFP_NOFS); |
| 1352 | rnb = kcalloc(npages, sizeof(struct niobuf_remote), GFP_NOFS); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1353 | |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 1354 | if (!lnb || !rnb) { |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1355 | ret = -ENOMEM; |
| 1356 | goto out; |
| 1357 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1358 | |
| 1359 | if (rw == OBD_BRW_WRITE && async) |
| 1360 | brw_flags |= OBD_BRW_ASYNC; |
| 1361 | |
| 1362 | obdo_to_ioobj(oa, &ioo); |
| 1363 | |
| 1364 | off = offset; |
| 1365 | |
Greg Donald | a58a38a | 2014-08-21 12:40:35 -0500 | [diff] [blame] | 1366 | for (; tot_pages; tot_pages -= npages) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1367 | int lpages; |
| 1368 | |
| 1369 | if (tot_pages < npages) |
| 1370 | npages = tot_pages; |
| 1371 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1372 | for (i = 0; i < npages; i++, off += PAGE_SIZE) { |
John L. Hammond | 638814f | 2016-09-18 16:37:07 -0400 | [diff] [blame] | 1373 | rnb[i].rnb_offset = off; |
| 1374 | rnb[i].rnb_len = PAGE_SIZE; |
| 1375 | rnb[i].rnb_flags = brw_flags; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1376 | } |
| 1377 | |
| 1378 | ioo.ioo_bufcnt = npages; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1379 | |
| 1380 | lpages = npages; |
| 1381 | ret = obd_preprw(env, rw, exp, oa, 1, &ioo, rnb, &lpages, |
Oleg Drokin | ef2e0f5 | 2015-09-27 16:45:46 -0400 | [diff] [blame] | 1382 | lnb, oti); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1383 | if (ret != 0) |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1384 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1385 | LASSERT(lpages == npages); |
| 1386 | |
| 1387 | for (i = 0; i < lpages; i++) { |
John L. Hammond | 485154d | 2016-09-18 16:37:06 -0400 | [diff] [blame] | 1388 | struct page *page = lnb[i].lnb_page; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1389 | |
| 1390 | /* read past eof? */ |
John L. Hammond | 485154d | 2016-09-18 16:37:06 -0400 | [diff] [blame] | 1391 | if (!page && lnb[i].lnb_rc == 0) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1392 | continue; |
| 1393 | |
| 1394 | if (async) |
John L. Hammond | 485154d | 2016-09-18 16:37:06 -0400 | [diff] [blame] | 1395 | lnb[i].lnb_flags |= OBD_BRW_ASYNC; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1396 | |
| 1397 | if (ostid_id(&oa->o_oi) == ECHO_PERSISTENT_OBJID || |
| 1398 | (oa->o_valid & OBD_MD_FLFLAGS) == 0 || |
| 1399 | (oa->o_flags & OBD_FL_DEBUG_CHECK) == 0) |
| 1400 | continue; |
| 1401 | |
| 1402 | if (rw == OBD_BRW_WRITE) |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1403 | echo_client_page_debug_setup(page, rw, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1404 | ostid_id(&oa->o_oi), |
John L. Hammond | 638814f | 2016-09-18 16:37:07 -0400 | [diff] [blame] | 1405 | rnb[i].rnb_offset, |
| 1406 | rnb[i].rnb_len); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1407 | else |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1408 | echo_client_page_debug_check(page, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1409 | ostid_id(&oa->o_oi), |
John L. Hammond | 638814f | 2016-09-18 16:37:07 -0400 | [diff] [blame] | 1410 | rnb[i].rnb_offset, |
| 1411 | rnb[i].rnb_len); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1412 | } |
| 1413 | |
| 1414 | ret = obd_commitrw(env, rw, exp, oa, 1, &ioo, |
| 1415 | rnb, npages, lnb, oti, ret); |
| 1416 | if (ret != 0) |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1417 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1418 | |
| 1419 | /* Reset oti otherwise it would confuse ldiskfs. */ |
| 1420 | memset(oti, 0, sizeof(*oti)); |
Jian Yu | 09b0170 | 2013-06-03 21:40:59 +0800 | [diff] [blame] | 1421 | |
| 1422 | /* Reuse env context. */ |
| 1423 | lu_context_exit((struct lu_context *)&env->le_ctx); |
| 1424 | lu_context_enter((struct lu_context *)&env->le_ctx); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1425 | } |
| 1426 | |
| 1427 | out: |
Julia Lawall | 627ef6e | 2015-05-01 21:37:51 +0200 | [diff] [blame] | 1428 | kfree(lnb); |
| 1429 | kfree(rnb); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1430 | return ret; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1431 | } |
| 1432 | |
| 1433 | static int echo_client_brw_ioctl(const struct lu_env *env, int rw, |
| 1434 | struct obd_export *exp, |
| 1435 | struct obd_ioctl_data *data, |
| 1436 | struct obd_trans_info *dummy_oti) |
| 1437 | { |
| 1438 | struct obd_device *obd = class_exp2obd(exp); |
| 1439 | struct echo_device *ed = obd2echo_dev(obd); |
| 1440 | struct echo_client_obd *ec = ed->ed_ec; |
| 1441 | struct obdo *oa = &data->ioc_obdo1; |
| 1442 | struct echo_object *eco; |
| 1443 | int rc; |
| 1444 | int async = 1; |
| 1445 | long test_mode; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1446 | |
| 1447 | LASSERT(oa->o_valid & OBD_MD_FLGROUP); |
| 1448 | |
| 1449 | rc = echo_get_object(&eco, ed, oa); |
| 1450 | if (rc) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1451 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1452 | |
| 1453 | oa->o_valid &= ~OBD_MD_FLHANDLE; |
| 1454 | |
| 1455 | /* OFD/obdfilter works only via prep/commit */ |
| 1456 | test_mode = (long)data->ioc_pbuf1; |
| 1457 | if (test_mode == 1) |
| 1458 | async = 0; |
| 1459 | |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 1460 | if (!ed->ed_next && test_mode != 3) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1461 | test_mode = 3; |
| 1462 | data->ioc_plen1 = data->ioc_count; |
| 1463 | } |
| 1464 | |
| 1465 | /* Truncate batch size to maximum */ |
| 1466 | if (data->ioc_plen1 > PTLRPC_MAX_BRW_SIZE) |
| 1467 | data->ioc_plen1 = PTLRPC_MAX_BRW_SIZE; |
| 1468 | |
| 1469 | switch (test_mode) { |
| 1470 | case 1: |
| 1471 | /* fall through */ |
| 1472 | case 2: |
| 1473 | rc = echo_client_kbrw(ed, rw, oa, |
| 1474 | eco, data->ioc_offset, |
| 1475 | data->ioc_count, async, dummy_oti); |
| 1476 | break; |
| 1477 | case 3: |
| 1478 | rc = echo_client_prep_commit(env, ec->ec_exp, rw, oa, |
| 1479 | eco, data->ioc_offset, |
| 1480 | data->ioc_count, data->ioc_plen1, |
| 1481 | dummy_oti, async); |
| 1482 | break; |
| 1483 | default: |
| 1484 | rc = -EINVAL; |
| 1485 | } |
| 1486 | echo_put_object(eco); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1487 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1488 | } |
| 1489 | |
| 1490 | static int |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1491 | echo_client_iocontrol(unsigned int cmd, struct obd_export *exp, int len, |
Oleg Drokin | e09bee3 | 2016-01-03 12:05:43 -0500 | [diff] [blame] | 1492 | void *karg, void __user *uarg) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1493 | { |
| 1494 | struct obd_device *obd = exp->exp_obd; |
| 1495 | struct echo_device *ed = obd2echo_dev(obd); |
| 1496 | struct echo_client_obd *ec = ed->ed_ec; |
| 1497 | struct echo_object *eco; |
| 1498 | struct obd_ioctl_data *data = karg; |
| 1499 | struct obd_trans_info dummy_oti; |
| 1500 | struct lu_env *env; |
| 1501 | struct oti_req_ack_lock *ack_lock; |
| 1502 | struct obdo *oa; |
| 1503 | struct lu_fid fid; |
| 1504 | int rw = OBD_BRW_READ; |
| 1505 | int rc = 0; |
| 1506 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1507 | |
| 1508 | memset(&dummy_oti, 0, sizeof(dummy_oti)); |
| 1509 | |
| 1510 | oa = &data->ioc_obdo1; |
| 1511 | if (!(oa->o_valid & OBD_MD_FLGROUP)) { |
| 1512 | oa->o_valid |= OBD_MD_FLGROUP; |
| 1513 | ostid_set_seq_echo(&oa->o_oi); |
| 1514 | } |
| 1515 | |
| 1516 | /* This FID is unpacked just for validation at this point */ |
| 1517 | rc = ostid_to_fid(&fid, &oa->o_oi, 0); |
| 1518 | if (rc < 0) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1519 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1520 | |
Julia Lawall | c5b8952 | 2015-05-01 17:51:14 +0200 | [diff] [blame] | 1521 | env = kzalloc(sizeof(*env), GFP_NOFS); |
Julia Lawall | efeb257 | 2015-06-20 18:59:08 +0200 | [diff] [blame] | 1522 | if (!env) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1523 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1524 | |
| 1525 | rc = lu_env_init(env, LCT_DT_THREAD); |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1526 | if (rc) { |
| 1527 | rc = -ENOMEM; |
| 1528 | goto out; |
| 1529 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1530 | |
| 1531 | switch (cmd) { |
| 1532 | case OBD_IOC_CREATE: /* may create echo object */ |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1533 | if (!capable(CFS_CAP_SYS_ADMIN)) { |
| 1534 | rc = -EPERM; |
| 1535 | goto out; |
| 1536 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1537 | |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1538 | rc = echo_create_object(env, ed, oa, &dummy_oti); |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1539 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1540 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1541 | case OBD_IOC_DESTROY: |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1542 | if (!capable(CFS_CAP_SYS_ADMIN)) { |
| 1543 | rc = -EPERM; |
| 1544 | goto out; |
| 1545 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1546 | |
| 1547 | rc = echo_get_object(&eco, ed, oa); |
| 1548 | if (rc == 0) { |
John L. Hammond | 3f06207 | 2016-09-18 16:38:12 -0400 | [diff] [blame] | 1549 | rc = obd_destroy(env, ec->ec_exp, oa, &dummy_oti); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1550 | if (rc == 0) |
| 1551 | eco->eo_deleted = 1; |
| 1552 | echo_put_object(eco); |
| 1553 | } |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1554 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1555 | |
| 1556 | case OBD_IOC_GETATTR: |
| 1557 | rc = echo_get_object(&eco, ed, oa); |
| 1558 | if (rc == 0) { |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1559 | struct obd_info oinfo = { |
| 1560 | .oi_oa = oa, |
| 1561 | }; |
Hatice ERTÜRK | ded9f90 | 2015-02-27 21:34:25 +0200 | [diff] [blame] | 1562 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1563 | rc = obd_getattr(env, ec->ec_exp, &oinfo); |
| 1564 | echo_put_object(eco); |
| 1565 | } |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1566 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1567 | |
| 1568 | case OBD_IOC_SETATTR: |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1569 | if (!capable(CFS_CAP_SYS_ADMIN)) { |
| 1570 | rc = -EPERM; |
| 1571 | goto out; |
| 1572 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1573 | |
| 1574 | rc = echo_get_object(&eco, ed, oa); |
| 1575 | if (rc == 0) { |
John L. Hammond | f833ea1 | 2016-01-03 12:05:36 -0500 | [diff] [blame] | 1576 | struct obd_info oinfo = { |
| 1577 | .oi_oa = oa, |
| 1578 | }; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1579 | |
| 1580 | rc = obd_setattr(env, ec->ec_exp, &oinfo, NULL); |
| 1581 | echo_put_object(eco); |
| 1582 | } |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1583 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1584 | |
| 1585 | case OBD_IOC_BRW_WRITE: |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1586 | if (!capable(CFS_CAP_SYS_ADMIN)) { |
| 1587 | rc = -EPERM; |
| 1588 | goto out; |
| 1589 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1590 | |
| 1591 | rw = OBD_BRW_WRITE; |
| 1592 | /* fall through */ |
| 1593 | case OBD_IOC_BRW_READ: |
| 1594 | rc = echo_client_brw_ioctl(env, rw, exp, data, &dummy_oti); |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1595 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1596 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1597 | default: |
Yogeswaran Thulasidoss | d841438 | 2015-03-16 08:21:50 +0530 | [diff] [blame] | 1598 | CERROR("echo_ioctl(): unrecognised ioctl %#x\n", cmd); |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1599 | rc = -ENOTTY; |
| 1600 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1601 | } |
| 1602 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1603 | out: |
| 1604 | lu_env_fini(env); |
Julia Lawall | c5b8952 | 2015-05-01 17:51:14 +0200 | [diff] [blame] | 1605 | kfree(env); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1606 | |
| 1607 | /* XXX this should be in a helper also called by target_send_reply */ |
| 1608 | for (ack_lock = dummy_oti.oti_ack_locks, i = 0; i < 4; |
| 1609 | i++, ack_lock++) { |
| 1610 | if (!ack_lock->mode) |
| 1611 | break; |
| 1612 | ldlm_lock_decref(&ack_lock->lock, ack_lock->mode); |
| 1613 | } |
| 1614 | |
| 1615 | return rc; |
| 1616 | } |
| 1617 | |
| 1618 | static int echo_client_setup(const struct lu_env *env, |
| 1619 | struct obd_device *obddev, struct lustre_cfg *lcfg) |
| 1620 | { |
| 1621 | struct echo_client_obd *ec = &obddev->u.echo_client; |
| 1622 | struct obd_device *tgt; |
| 1623 | struct obd_uuid echo_uuid = { "ECHO_UUID" }; |
| 1624 | struct obd_connect_data *ocd = NULL; |
| 1625 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1626 | |
| 1627 | if (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) { |
| 1628 | CERROR("requires a TARGET OBD name\n"); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1629 | return -EINVAL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1630 | } |
| 1631 | |
| 1632 | tgt = class_name2obd(lustre_cfg_string(lcfg, 1)); |
| 1633 | if (!tgt || !tgt->obd_attached || !tgt->obd_set_up) { |
| 1634 | CERROR("device not attached or not set up (%s)\n", |
| 1635 | lustre_cfg_string(lcfg, 1)); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1636 | return -EINVAL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1637 | } |
| 1638 | |
| 1639 | spin_lock_init(&ec->ec_lock); |
Yogeswaran Thulasidoss | d841438 | 2015-03-16 08:21:50 +0530 | [diff] [blame] | 1640 | INIT_LIST_HEAD(&ec->ec_objects); |
| 1641 | INIT_LIST_HEAD(&ec->ec_locks); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1642 | ec->ec_unique = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1643 | |
Julia Lawall | c5b8952 | 2015-05-01 17:51:14 +0200 | [diff] [blame] | 1644 | ocd = kzalloc(sizeof(*ocd), GFP_NOFS); |
Bhumika Goyal | 2f27a3e | 2016-02-29 01:14:33 +0530 | [diff] [blame] | 1645 | if (!ocd) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1646 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1647 | |
| 1648 | ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_REQPORTAL | |
| 1649 | OBD_CONNECT_BRW_SIZE | |
| 1650 | OBD_CONNECT_GRANT | OBD_CONNECT_FULL20 | |
wang di | 3b2f75f | 2013-06-03 21:40:50 +0800 | [diff] [blame] | 1651 | OBD_CONNECT_64BITHASH | OBD_CONNECT_LVB_TYPE | |
| 1652 | OBD_CONNECT_FID; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1653 | ocd->ocd_brw_size = DT_MAX_BRW_SIZE; |
| 1654 | ocd->ocd_version = LUSTRE_VERSION_CODE; |
| 1655 | ocd->ocd_group = FID_SEQ_ECHO; |
| 1656 | |
| 1657 | rc = obd_connect(env, &ec->ec_exp, tgt, &echo_uuid, ocd, NULL); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1658 | |
Julia Lawall | c5b8952 | 2015-05-01 17:51:14 +0200 | [diff] [blame] | 1659 | kfree(ocd); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1660 | |
| 1661 | if (rc != 0) { |
| 1662 | CERROR("fail to connect to device %s\n", |
| 1663 | lustre_cfg_string(lcfg, 1)); |
Julia Lawall | fbe7c6c | 2014-08-26 22:00:33 +0200 | [diff] [blame] | 1664 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1665 | } |
| 1666 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1667 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1668 | } |
| 1669 | |
| 1670 | static int echo_client_cleanup(struct obd_device *obddev) |
| 1671 | { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1672 | struct echo_client_obd *ec = &obddev->u.echo_client; |
| 1673 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1674 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1675 | if (!list_empty(&obddev->obd_exports)) { |
| 1676 | CERROR("still has clients!\n"); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1677 | return -EBUSY; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1678 | } |
| 1679 | |
| 1680 | LASSERT(atomic_read(&ec->ec_exp->exp_refcount) > 0); |
| 1681 | rc = obd_disconnect(ec->ec_exp); |
| 1682 | if (rc != 0) |
| 1683 | CERROR("fail to disconnect device: %d\n", rc); |
| 1684 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1685 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1686 | } |
| 1687 | |
| 1688 | static int echo_client_connect(const struct lu_env *env, |
| 1689 | struct obd_export **exp, |
| 1690 | struct obd_device *src, struct obd_uuid *cluuid, |
| 1691 | struct obd_connect_data *data, void *localdata) |
| 1692 | { |
| 1693 | int rc; |
| 1694 | struct lustre_handle conn = { 0 }; |
| 1695 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1696 | rc = class_connect(&conn, src, cluuid); |
| 1697 | if (rc == 0) { |
| 1698 | *exp = class_conn2export(&conn); |
| 1699 | } |
| 1700 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1701 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1702 | } |
| 1703 | |
| 1704 | static int echo_client_disconnect(struct obd_export *exp) |
| 1705 | { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1706 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1707 | |
Oleg Drokin | 7ae59ed | 2016-02-16 00:46:56 -0500 | [diff] [blame] | 1708 | if (!exp) { |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1709 | rc = -EINVAL; |
| 1710 | goto out; |
| 1711 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1712 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1713 | rc = class_disconnect(exp); |
Jiayi Ye | abb368a | 2014-10-20 19:52:03 +0800 | [diff] [blame] | 1714 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1715 | out: |
| 1716 | return rc; |
| 1717 | } |
| 1718 | |
| 1719 | static struct obd_ops echo_client_obd_ops = { |
Dan Carpenter | a13b1f3 | 2015-10-29 12:24:40 +0300 | [diff] [blame] | 1720 | .owner = THIS_MODULE, |
| 1721 | .iocontrol = echo_client_iocontrol, |
| 1722 | .connect = echo_client_connect, |
| 1723 | .disconnect = echo_client_disconnect |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1724 | }; |
| 1725 | |
Zoltán Lajos Kis | 5b34cd2 | 2015-08-02 19:22:30 +0200 | [diff] [blame] | 1726 | static int echo_client_init(void) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1727 | { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1728 | int rc; |
| 1729 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1730 | rc = lu_kmem_init(echo_caches); |
| 1731 | if (rc == 0) { |
| 1732 | rc = class_register_type(&echo_client_obd_ops, NULL, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1733 | LUSTRE_ECHO_CLIENT_NAME, |
| 1734 | &echo_device_type); |
| 1735 | if (rc) |
| 1736 | lu_kmem_fini(echo_caches); |
| 1737 | } |
| 1738 | return rc; |
| 1739 | } |
| 1740 | |
Zoltán Lajos Kis | 5b34cd2 | 2015-08-02 19:22:30 +0200 | [diff] [blame] | 1741 | static void echo_client_exit(void) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1742 | { |
| 1743 | class_unregister_type(LUSTRE_ECHO_CLIENT_NAME); |
| 1744 | lu_kmem_fini(echo_caches); |
| 1745 | } |
| 1746 | |
| 1747 | static int __init obdecho_init(void) |
| 1748 | { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1749 | LCONSOLE_INFO("Echo OBD driver; http://www.lustre.org/\n"); |
| 1750 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1751 | LASSERT(PAGE_SIZE % OBD_ECHO_BLOCK_SIZE == 0); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1752 | |
Aya Mahfouz | d9518b7 | 2015-02-27 14:56:28 +0200 | [diff] [blame] | 1753 | return echo_client_init(); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1754 | } |
| 1755 | |
| 1756 | static void /*__exit*/ obdecho_exit(void) |
| 1757 | { |
| 1758 | echo_client_exit(); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1759 | } |
| 1760 | |
James Simmons | a045547 | 2015-11-04 13:40:02 -0500 | [diff] [blame] | 1761 | MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>"); |
Andreas Dilger | 57878e1 | 2016-02-26 11:36:04 -0500 | [diff] [blame] | 1762 | MODULE_DESCRIPTION("Lustre Echo Client test driver"); |
Greg Kroah-Hartman | 6960736 | 2013-08-04 08:16:25 +0800 | [diff] [blame] | 1763 | MODULE_VERSION(LUSTRE_VERSION_STRING); |
James Simmons | 5b0e50b | 2016-02-26 11:36:03 -0500 | [diff] [blame] | 1764 | MODULE_LICENSE("GPL"); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1765 | |
Greg Kroah-Hartman | 6960736 | 2013-08-04 08:16:25 +0800 | [diff] [blame] | 1766 | module_init(obdecho_init); |
| 1767 | module_exit(obdecho_exit); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1768 | |
| 1769 | /** @} echo_client */ |