Commit | Line | Data |
---|---|---|
c66ac9db NB |
1 | /******************************************************************************* |
2 | * Filename: target_core_tmr.c | |
3 | * | |
4 | * This file contains SPC-3 task management infrastructure | |
5 | * | |
4c76251e | 6 | * (c) Copyright 2009-2013 Datera, Inc. |
c66ac9db NB |
7 | * |
8 | * Nicholas A. Bellinger <nab@kernel.org> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
23 | * | |
24 | ******************************************************************************/ | |
25 | ||
c66ac9db NB |
26 | #include <linux/slab.h> |
27 | #include <linux/spinlock.h> | |
28 | #include <linux/list.h> | |
c53181af | 29 | #include <linux/export.h> |
c66ac9db NB |
30 | |
31 | #include <target/target_core_base.h> | |
c4795fb2 CH |
32 | #include <target/target_core_backend.h> |
33 | #include <target/target_core_fabric.h> | |
c66ac9db | 34 | |
e26d99ae | 35 | #include "target_core_internal.h" |
c66ac9db NB |
36 | #include "target_core_alua.h" |
37 | #include "target_core_pr.h" | |
38 | ||
c8e31f26 | 39 | int core_tmr_alloc_req( |
c66ac9db NB |
40 | struct se_cmd *se_cmd, |
41 | void *fabric_tmr_ptr, | |
dd503a5f RD |
42 | u8 function, |
43 | gfp_t gfp_flags) | |
c66ac9db NB |
44 | { |
45 | struct se_tmr_req *tmr; | |
46 | ||
c8e31f26 | 47 | tmr = kzalloc(sizeof(struct se_tmr_req), gfp_flags); |
6708bb27 AG |
48 | if (!tmr) { |
49 | pr_err("Unable to allocate struct se_tmr_req\n"); | |
c8e31f26 | 50 | return -ENOMEM; |
c66ac9db | 51 | } |
c8e31f26 AG |
52 | |
53 | se_cmd->se_cmd_flags |= SCF_SCSI_TMR_CDB; | |
54 | se_cmd->se_tmr_req = tmr; | |
c66ac9db NB |
55 | tmr->task_cmd = se_cmd; |
56 | tmr->fabric_tmr_ptr = fabric_tmr_ptr; | |
57 | tmr->function = function; | |
58 | INIT_LIST_HEAD(&tmr->tmr_list); | |
59 | ||
c8e31f26 | 60 | return 0; |
c66ac9db NB |
61 | } |
62 | EXPORT_SYMBOL(core_tmr_alloc_req); | |
63 | ||
8f832690 | 64 | void core_tmr_release_req(struct se_tmr_req *tmr) |
c66ac9db NB |
65 | { |
66 | struct se_device *dev = tmr->tmr_dev; | |
d050ffb9 | 67 | unsigned long flags; |
c66ac9db | 68 | |
8f832690 JE |
69 | if (dev) { |
70 | spin_lock_irqsave(&dev->se_tmr_lock, flags); | |
a6d9bb1c | 71 | list_del_init(&tmr->tmr_list); |
8f832690 | 72 | spin_unlock_irqrestore(&dev->se_tmr_lock, flags); |
7fd29aa9 NB |
73 | } |
74 | ||
c8e31f26 | 75 | kfree(tmr); |
c66ac9db NB |
76 | } |
77 | ||
0f4a9431 | 78 | static void core_tmr_handle_tas_abort(struct se_cmd *cmd, int tas) |
c66ac9db | 79 | { |
0f4a9431 NB |
80 | unsigned long flags; |
81 | bool remove = true, send_tas; | |
c66ac9db NB |
82 | /* |
83 | * TASK ABORTED status (TAS) bit support | |
8f832690 | 84 | */ |
0f4a9431 NB |
85 | spin_lock_irqsave(&cmd->t_state_lock, flags); |
86 | send_tas = (cmd->transport_state & CMD_T_TAS); | |
87 | spin_unlock_irqrestore(&cmd->t_state_lock, flags); | |
88 | ||
89 | if (send_tas) { | |
68259b5a | 90 | remove = false; |
c66ac9db | 91 | transport_send_task_abort(cmd); |
68259b5a | 92 | } |
c66ac9db | 93 | |
68259b5a | 94 | transport_cmd_finish_abort(cmd, remove); |
c66ac9db NB |
95 | } |
96 | ||
feae8564 JE |
97 | static int target_check_cdb_and_preempt(struct list_head *list, |
98 | struct se_cmd *cmd) | |
c165f69c | 99 | { |
feae8564 | 100 | struct t10_pr_registration *reg; |
c165f69c | 101 | |
feae8564 JE |
102 | if (!list) |
103 | return 0; | |
104 | list_for_each_entry(reg, list, pr_reg_abort_list) { | |
105 | if (reg->pr_res_key == cmd->pr_res_key) | |
c165f69c JE |
106 | return 0; |
107 | } | |
108 | ||
109 | return 1; | |
110 | } | |
111 | ||
0f4a9431 NB |
112 | static bool __target_check_io_state(struct se_cmd *se_cmd, |
113 | struct se_session *tmr_sess, int tas) | |
febe562c NB |
114 | { |
115 | struct se_session *sess = se_cmd->se_sess; | |
116 | ||
117 | assert_spin_locked(&sess->sess_cmd_lock); | |
118 | WARN_ON_ONCE(!irqs_disabled()); | |
119 | /* | |
120 | * If command already reached CMD_T_COMPLETE state within | |
0f4a9431 NB |
121 | * target_complete_cmd() or CMD_T_FABRIC_STOP due to shutdown, |
122 | * this se_cmd has been passed to fabric driver and will | |
123 | * not be aborted. | |
febe562c NB |
124 | * |
125 | * Otherwise, obtain a local se_cmd->cmd_kref now for TMR | |
126 | * ABORT_TASK + LUN_RESET for CMD_T_ABORTED processing as | |
127 | * long as se_cmd->cmd_kref is still active unless zero. | |
128 | */ | |
129 | spin_lock(&se_cmd->t_state_lock); | |
0f4a9431 NB |
130 | if (se_cmd->transport_state & (CMD_T_COMPLETE | CMD_T_FABRIC_STOP)) { |
131 | pr_debug("Attempted to abort io tag: %llu already complete or" | |
132 | " fabric stop, skipping\n", se_cmd->tag); | |
133 | spin_unlock(&se_cmd->t_state_lock); | |
134 | return false; | |
135 | } | |
136 | if (sess->sess_tearing_down || se_cmd->cmd_wait_set) { | |
137 | pr_debug("Attempted to abort io tag: %llu already shutdown," | |
febe562c NB |
138 | " skipping\n", se_cmd->tag); |
139 | spin_unlock(&se_cmd->t_state_lock); | |
140 | return false; | |
141 | } | |
142 | se_cmd->transport_state |= CMD_T_ABORTED; | |
0f4a9431 NB |
143 | |
144 | if ((tmr_sess != se_cmd->se_sess) && tas) | |
145 | se_cmd->transport_state |= CMD_T_TAS; | |
146 | ||
febe562c NB |
147 | spin_unlock(&se_cmd->t_state_lock); |
148 | ||
149 | return kref_get_unless_zero(&se_cmd->cmd_kref); | |
150 | } | |
151 | ||
3d28934a NB |
152 | void core_tmr_abort_task( |
153 | struct se_device *dev, | |
154 | struct se_tmr_req *tmr, | |
155 | struct se_session *se_sess) | |
156 | { | |
f81ccb48 | 157 | struct se_cmd *se_cmd; |
3d28934a | 158 | unsigned long flags; |
649ee054 | 159 | u64 ref_tag; |
3d28934a NB |
160 | |
161 | spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); | |
f81ccb48 | 162 | list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) { |
3d28934a NB |
163 | |
164 | if (dev != se_cmd->se_dev) | |
165 | continue; | |
47b1584c | 166 | |
dc0fafda BVA |
167 | /* skip task management functions, including tmr->task_cmd */ |
168 | if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) | |
47b1584c AL |
169 | continue; |
170 | ||
649ee054 | 171 | ref_tag = se_cmd->tag; |
3d28934a NB |
172 | if (tmr->ref_task_tag != ref_tag) |
173 | continue; | |
174 | ||
649ee054 | 175 | printk("ABORT_TASK: Found referenced %s task_tag: %llu\n", |
3d28934a NB |
176 | se_cmd->se_tfo->get_fabric_name(), ref_tag); |
177 | ||
0f4a9431 | 178 | if (!__target_check_io_state(se_cmd, se_sess, 0)) { |
3d28934a NB |
179 | spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); |
180 | goto out; | |
181 | } | |
3d28934a | 182 | list_del_init(&se_cmd->se_cmd_list); |
3d28934a NB |
183 | spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); |
184 | ||
185 | cancel_work_sync(&se_cmd->work); | |
186 | transport_wait_for_tasks(se_cmd); | |
3d28934a | 187 | |
68259b5a | 188 | transport_cmd_finish_abort(se_cmd, true); |
febe562c | 189 | target_put_sess_cmd(se_cmd); |
3d28934a NB |
190 | |
191 | printk("ABORT_TASK: Sending TMR_FUNCTION_COMPLETE for" | |
649ee054 | 192 | " ref_tag: %llu\n", ref_tag); |
3d28934a NB |
193 | tmr->response = TMR_FUNCTION_COMPLETE; |
194 | return; | |
195 | } | |
196 | spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); | |
197 | ||
198 | out: | |
649ee054 | 199 | printk("ABORT_TASK: Sending TMR_TASK_DOES_NOT_EXIST for ref_tag: %lld\n", |
3d28934a NB |
200 | tmr->ref_task_tag); |
201 | tmr->response = TMR_TASK_DOES_NOT_EXIST; | |
202 | } | |
203 | ||
d050ffb9 | 204 | static void core_tmr_drain_tmr_list( |
c66ac9db NB |
205 | struct se_device *dev, |
206 | struct se_tmr_req *tmr, | |
d050ffb9 | 207 | struct list_head *preempt_and_abort_list) |
c66ac9db | 208 | { |
d050ffb9 | 209 | LIST_HEAD(drain_tmr_list); |
a6d9bb1c | 210 | struct se_session *sess; |
c66ac9db | 211 | struct se_tmr_req *tmr_p, *tmr_pp; |
d050ffb9 | 212 | struct se_cmd *cmd; |
c66ac9db | 213 | unsigned long flags; |
a6d9bb1c | 214 | bool rc; |
c66ac9db NB |
215 | /* |
216 | * Release all pending and outgoing TMRs aside from the received | |
217 | * LUN_RESET tmr.. | |
218 | */ | |
d050ffb9 | 219 | spin_lock_irqsave(&dev->se_tmr_lock, flags); |
c66ac9db NB |
220 | list_for_each_entry_safe(tmr_p, tmr_pp, &dev->dev_tmr_list, tmr_list) { |
221 | /* | |
222 | * Allow the received TMR to return with FUNCTION_COMPLETE. | |
223 | */ | |
abc1fd4f | 224 | if (tmr_p == tmr) |
c66ac9db NB |
225 | continue; |
226 | ||
227 | cmd = tmr_p->task_cmd; | |
6708bb27 AG |
228 | if (!cmd) { |
229 | pr_err("Unable to locate struct se_cmd for TMR\n"); | |
c66ac9db NB |
230 | continue; |
231 | } | |
232 | /* | |
233 | * If this function was called with a valid pr_res_key | |
234 | * parameter (eg: for PROUT PREEMPT_AND_ABORT service action | |
ac75d8be | 235 | * skip non registration key matching TMRs. |
c66ac9db | 236 | */ |
feae8564 | 237 | if (target_check_cdb_and_preempt(preempt_and_abort_list, cmd)) |
c66ac9db | 238 | continue; |
c66ac9db | 239 | |
a6d9bb1c NB |
240 | sess = cmd->se_sess; |
241 | if (WARN_ON_ONCE(!sess)) | |
242 | continue; | |
243 | ||
244 | spin_lock(&sess->sess_cmd_lock); | |
d050ffb9 | 245 | spin_lock(&cmd->t_state_lock); |
0f4a9431 NB |
246 | if (!(cmd->transport_state & CMD_T_ACTIVE) || |
247 | (cmd->transport_state & CMD_T_FABRIC_STOP)) { | |
d050ffb9 | 248 | spin_unlock(&cmd->t_state_lock); |
a6d9bb1c | 249 | spin_unlock(&sess->sess_cmd_lock); |
c66ac9db NB |
250 | continue; |
251 | } | |
252 | if (cmd->t_state == TRANSPORT_ISTATE_PROCESSING) { | |
d050ffb9 | 253 | spin_unlock(&cmd->t_state_lock); |
a6d9bb1c | 254 | spin_unlock(&sess->sess_cmd_lock); |
c66ac9db NB |
255 | continue; |
256 | } | |
0f4a9431 NB |
257 | if (sess->sess_tearing_down || cmd->cmd_wait_set) { |
258 | spin_unlock(&cmd->t_state_lock); | |
259 | spin_unlock(&sess->sess_cmd_lock); | |
260 | continue; | |
261 | } | |
a6d9bb1c | 262 | cmd->transport_state |= CMD_T_ABORTED; |
d050ffb9 NB |
263 | spin_unlock(&cmd->t_state_lock); |
264 | ||
a6d9bb1c | 265 | rc = kref_get_unless_zero(&cmd->cmd_kref); |
a6d9bb1c NB |
266 | if (!rc) { |
267 | printk("LUN_RESET TMR: non-zero kref_get_unless_zero\n"); | |
0f4a9431 | 268 | spin_unlock(&sess->sess_cmd_lock); |
a6d9bb1c NB |
269 | continue; |
270 | } | |
0f4a9431 NB |
271 | spin_unlock(&sess->sess_cmd_lock); |
272 | ||
6eb40b2a | 273 | list_move_tail(&tmr_p->tmr_list, &drain_tmr_list); |
d050ffb9 NB |
274 | } |
275 | spin_unlock_irqrestore(&dev->se_tmr_lock, flags); | |
276 | ||
abc1fd4f | 277 | list_for_each_entry_safe(tmr_p, tmr_pp, &drain_tmr_list, tmr_list) { |
b8a11d73 | 278 | list_del_init(&tmr_p->tmr_list); |
abc1fd4f | 279 | cmd = tmr_p->task_cmd; |
d050ffb9 | 280 | |
6708bb27 | 281 | pr_debug("LUN_RESET: %s releasing TMR %p Function: 0x%02x," |
c66ac9db | 282 | " Response: 0x%02x, t_state: %d\n", |
abc1fd4f JE |
283 | (preempt_and_abort_list) ? "Preempt" : "", tmr_p, |
284 | tmr_p->function, tmr_p->response, cmd->t_state); | |
c66ac9db | 285 | |
a6d9bb1c NB |
286 | cancel_work_sync(&cmd->work); |
287 | transport_wait_for_tasks(cmd); | |
288 | ||
8dc52b54 | 289 | transport_cmd_finish_abort(cmd, 1); |
a6d9bb1c | 290 | target_put_sess_cmd(cmd); |
c66ac9db | 291 | } |
d050ffb9 NB |
292 | } |
293 | ||
cf572a96 | 294 | static void core_tmr_drain_state_list( |
d050ffb9 NB |
295 | struct se_device *dev, |
296 | struct se_cmd *prout_cmd, | |
ebde1ca5 | 297 | struct se_session *tmr_sess, |
d050ffb9 NB |
298 | int tas, |
299 | struct list_head *preempt_and_abort_list) | |
300 | { | |
301 | LIST_HEAD(drain_task_list); | |
febe562c | 302 | struct se_session *sess; |
cf572a96 | 303 | struct se_cmd *cmd, *next; |
d050ffb9 | 304 | unsigned long flags; |
febe562c | 305 | int rc; |
cf572a96 | 306 | |
c66ac9db | 307 | /* |
cf572a96 CH |
308 | * Complete outstanding commands with TASK_ABORTED SAM status. |
309 | * | |
c66ac9db NB |
310 | * This is following sam4r17, section 5.6 Aborting commands, Table 38 |
311 | * for TMR LUN_RESET: | |
312 | * | |
313 | * a) "Yes" indicates that each command that is aborted on an I_T nexus | |
314 | * other than the one that caused the SCSI device condition is | |
315 | * completed with TASK ABORTED status, if the TAS bit is set to one in | |
316 | * the Control mode page (see SPC-4). "No" indicates that no status is | |
317 | * returned for aborted commands. | |
318 | * | |
319 | * d) If the logical unit reset is caused by a particular I_T nexus | |
320 | * (e.g., by a LOGICAL UNIT RESET task management function), then "yes" | |
321 | * (TASK_ABORTED status) applies. | |
322 | * | |
323 | * Otherwise (e.g., if triggered by a hard reset), "no" | |
324 | * (no TASK_ABORTED SAM status) applies. | |
325 | * | |
326 | * Note that this seems to be independent of TAS (Task Aborted Status) | |
327 | * in the Control Mode Page. | |
328 | */ | |
329 | spin_lock_irqsave(&dev->execute_task_lock, flags); | |
cf572a96 | 330 | list_for_each_entry_safe(cmd, next, &dev->state_list, state_list) { |
c66ac9db NB |
331 | /* |
332 | * For PREEMPT_AND_ABORT usage, only process commands | |
333 | * with a matching reservation key. | |
334 | */ | |
feae8564 | 335 | if (target_check_cdb_and_preempt(preempt_and_abort_list, cmd)) |
c66ac9db | 336 | continue; |
cf572a96 | 337 | |
c66ac9db NB |
338 | /* |
339 | * Not aborting PROUT PREEMPT_AND_ABORT CDB.. | |
340 | */ | |
341 | if (prout_cmd == cmd) | |
342 | continue; | |
343 | ||
febe562c NB |
344 | sess = cmd->se_sess; |
345 | if (WARN_ON_ONCE(!sess)) | |
346 | continue; | |
347 | ||
348 | spin_lock(&sess->sess_cmd_lock); | |
0f4a9431 | 349 | rc = __target_check_io_state(cmd, tmr_sess, tas); |
febe562c NB |
350 | spin_unlock(&sess->sess_cmd_lock); |
351 | if (!rc) | |
352 | continue; | |
353 | ||
cf572a96 CH |
354 | list_move_tail(&cmd->state_list, &drain_task_list); |
355 | cmd->state_active = false; | |
d050ffb9 NB |
356 | } |
357 | spin_unlock_irqrestore(&dev->execute_task_lock, flags); | |
358 | ||
359 | while (!list_empty(&drain_task_list)) { | |
cf572a96 | 360 | cmd = list_entry(drain_task_list.next, struct se_cmd, state_list); |
febe562c | 361 | list_del_init(&cmd->state_list); |
c66ac9db | 362 | |
cf572a96 | 363 | pr_debug("LUN_RESET: %s cmd: %p" |
649ee054 | 364 | " ITT/CmdSN: 0x%08llx/0x%08x, i_state: %d, t_state: %d" |
f2da9dbd | 365 | "cdb: 0x%02x\n", |
cf572a96 | 366 | (preempt_and_abort_list) ? "Preempt" : "", cmd, |
649ee054 | 367 | cmd->tag, 0, |
e3d6f909 | 368 | cmd->se_tfo->get_cmd_state(cmd), cmd->t_state, |
f2da9dbd | 369 | cmd->t_task_cdb[0]); |
649ee054 | 370 | pr_debug("LUN_RESET: ITT[0x%08llx] - pr_res_key: 0x%016Lx" |
785fdf70 | 371 | " -- CMD_T_ACTIVE: %d" |
7d680f3b | 372 | " CMD_T_STOP: %d CMD_T_SENT: %d\n", |
649ee054 | 373 | cmd->tag, cmd->pr_res_key, |
7d680f3b CH |
374 | (cmd->transport_state & CMD_T_ACTIVE) != 0, |
375 | (cmd->transport_state & CMD_T_STOP) != 0, | |
376 | (cmd->transport_state & CMD_T_SENT) != 0); | |
c66ac9db | 377 | |
35e0e757 CH |
378 | /* |
379 | * If the command may be queued onto a workqueue cancel it now. | |
380 | * | |
381 | * This is equivalent to removal from the execute queue in the | |
382 | * loop above, but we do it down here given that | |
383 | * cancel_work_sync may block. | |
384 | */ | |
febe562c NB |
385 | cancel_work_sync(&cmd->work); |
386 | transport_wait_for_tasks(cmd); | |
c66ac9db | 387 | |
0f4a9431 | 388 | core_tmr_handle_tas_abort(cmd, tas); |
febe562c | 389 | target_put_sess_cmd(cmd); |
c66ac9db | 390 | } |
d050ffb9 NB |
391 | } |
392 | ||
d050ffb9 NB |
393 | int core_tmr_lun_reset( |
394 | struct se_device *dev, | |
395 | struct se_tmr_req *tmr, | |
396 | struct list_head *preempt_and_abort_list, | |
397 | struct se_cmd *prout_cmd) | |
398 | { | |
399 | struct se_node_acl *tmr_nacl = NULL; | |
400 | struct se_portal_group *tmr_tpg = NULL; | |
ebde1ca5 | 401 | struct se_session *tmr_sess = NULL; |
d050ffb9 NB |
402 | int tas; |
403 | /* | |
404 | * TASK_ABORTED status bit, this is configurable via ConfigFS | |
405 | * struct se_device attributes. spc4r17 section 7.4.6 Control mode page | |
406 | * | |
407 | * A task aborted status (TAS) bit set to zero specifies that aborted | |
408 | * tasks shall be terminated by the device server without any response | |
409 | * to the application client. A TAS bit set to one specifies that tasks | |
410 | * aborted by the actions of an I_T nexus other than the I_T nexus on | |
411 | * which the command was received shall be completed with TASK ABORTED | |
412 | * status (see SAM-4). | |
413 | */ | |
0fd97ccf | 414 | tas = dev->dev_attrib.emulate_tas; |
d050ffb9 NB |
415 | /* |
416 | * Determine if this se_tmr is coming from a $FABRIC_MOD | |
417 | * or struct se_device passthrough.. | |
418 | */ | |
419 | if (tmr && tmr->task_cmd && tmr->task_cmd->se_sess) { | |
ebde1ca5 NB |
420 | tmr_sess = tmr->task_cmd->se_sess; |
421 | tmr_nacl = tmr_sess->se_node_acl; | |
422 | tmr_tpg = tmr_sess->se_tpg; | |
d050ffb9 NB |
423 | if (tmr_nacl && tmr_tpg) { |
424 | pr_debug("LUN_RESET: TMR caller fabric: %s" | |
425 | " initiator port %s\n", | |
426 | tmr_tpg->se_tpg_tfo->get_fabric_name(), | |
427 | tmr_nacl->initiatorname); | |
428 | } | |
429 | } | |
430 | pr_debug("LUN_RESET: %s starting for [%s], tas: %d\n", | |
431 | (preempt_and_abort_list) ? "Preempt" : "TMR", | |
432 | dev->transport->name, tas); | |
433 | ||
434 | core_tmr_drain_tmr_list(dev, tmr, preempt_and_abort_list); | |
ebde1ca5 | 435 | core_tmr_drain_state_list(dev, prout_cmd, tmr_sess, tas, |
d050ffb9 | 436 | preempt_and_abort_list); |
af877292 | 437 | |
c66ac9db NB |
438 | /* |
439 | * Clear any legacy SPC-2 reservation when called during | |
440 | * LOGICAL UNIT RESET | |
441 | */ | |
6708bb27 | 442 | if (!preempt_and_abort_list && |
0fd97ccf | 443 | (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)) { |
c66ac9db NB |
444 | spin_lock(&dev->dev_reservation_lock); |
445 | dev->dev_reserved_node_acl = NULL; | |
0fd97ccf | 446 | dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS; |
c66ac9db | 447 | spin_unlock(&dev->dev_reservation_lock); |
6708bb27 | 448 | pr_debug("LUN_RESET: SCSI-2 Released reservation\n"); |
c66ac9db NB |
449 | } |
450 | ||
ee480683 | 451 | atomic_long_inc(&dev->num_resets); |
c66ac9db | 452 | |
6708bb27 | 453 | pr_debug("LUN_RESET: %s for [%s] Complete\n", |
c66ac9db | 454 | (preempt_and_abort_list) ? "Preempt" : "TMR", |
e3d6f909 | 455 | dev->transport->name); |
c66ac9db NB |
456 | return 0; |
457 | } | |
d050ffb9 | 458 |