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d7e09d03 PT |
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 | |
18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf | |
19 | * | |
20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 | * have any questions. | |
23 | * | |
24 | * GPL HEADER END | |
25 | */ | |
26 | /* | |
27 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
30 | * Copyright (c) 2011, 2012, Intel Corporation. | |
31 | */ | |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | * | |
36 | * lustre/llite/llite_capa.c | |
37 | * | |
38 | * Author: Lai Siyao <lsy@clusterfs.com> | |
39 | */ | |
40 | ||
41 | #define DEBUG_SUBSYSTEM S_LLITE | |
42 | ||
43 | #include <linux/fs.h> | |
576eb39a | 44 | #include <linux/uaccess.h> |
d7e09d03 PT |
45 | #include <linux/file.h> |
46 | #include <linux/kmod.h> | |
47 | ||
67a235f5 | 48 | #include "../include/lustre_lite.h" |
d7e09d03 PT |
49 | #include "llite_internal.h" |
50 | ||
51 | /* for obd_capa.c_list, client capa might stay in three places: | |
52 | * 1. ll_capa_list. | |
53 | * 2. ll_idle_capas. | |
54 | * 3. stand alone: just allocated. | |
55 | */ | |
56 | ||
57 | /* capas for oss writeback and those failed to renew */ | |
58 | static LIST_HEAD(ll_idle_capas); | |
59 | static struct ptlrpc_thread ll_capa_thread; | |
60 | static struct list_head *ll_capa_list = &capa_list[CAPA_SITE_CLIENT]; | |
61 | ||
62 | /* llite capa renewal timer */ | |
63 | struct timer_list ll_capa_timer; | |
64 | /* for debug: indicate whether capa on llite is enabled or not */ | |
65 | static atomic_t ll_capa_debug = ATOMIC_INIT(0); | |
8bcf3c23 AB |
66 | static unsigned long long ll_capa_renewed; |
67 | static unsigned long long ll_capa_renewal_noent; | |
68 | static unsigned long long ll_capa_renewal_failed; | |
69 | static unsigned long long ll_capa_renewal_retries; | |
d7e09d03 | 70 | |
2d95f10e JH |
71 | static int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa); |
72 | ||
d7e09d03 PT |
73 | static inline void update_capa_timer(struct obd_capa *ocapa, cfs_time_t expiry) |
74 | { | |
75 | if (cfs_time_before(expiry, ll_capa_timer.expires) || | |
76 | !timer_pending(&ll_capa_timer)) { | |
77 | mod_timer(&ll_capa_timer, expiry); | |
78 | DEBUG_CAPA(D_SEC, &ocapa->c_capa, | |
79 | "ll_capa_timer update: %lu/%lu by", expiry, jiffies); | |
80 | } | |
81 | } | |
82 | ||
83 | static inline cfs_time_t capa_renewal_time(struct obd_capa *ocapa) | |
84 | { | |
85 | return cfs_time_sub(ocapa->c_expiry, | |
86 | cfs_time_seconds(ocapa->c_capa.lc_timeout) / 2); | |
87 | } | |
88 | ||
89 | static inline int capa_is_to_expire(struct obd_capa *ocapa) | |
90 | { | |
91 | return cfs_time_beforeq(capa_renewal_time(ocapa), cfs_time_current()); | |
92 | } | |
93 | ||
94 | static inline int have_expired_capa(void) | |
95 | { | |
96 | struct obd_capa *ocapa = NULL; | |
97 | int expired = 0; | |
98 | ||
99 | /* if ll_capa_list has client capa to expire or ll_idle_capas has | |
100 | * expired capa, return 1. | |
101 | */ | |
102 | spin_lock(&capa_lock); | |
103 | if (!list_empty(ll_capa_list)) { | |
104 | ocapa = list_entry(ll_capa_list->next, struct obd_capa, | |
105 | c_list); | |
106 | expired = capa_is_to_expire(ocapa); | |
107 | if (!expired) | |
108 | update_capa_timer(ocapa, capa_renewal_time(ocapa)); | |
109 | } else if (!list_empty(&ll_idle_capas)) { | |
110 | ocapa = list_entry(ll_idle_capas.next, struct obd_capa, | |
111 | c_list); | |
112 | expired = capa_is_expired(ocapa); | |
113 | if (!expired) | |
114 | update_capa_timer(ocapa, ocapa->c_expiry); | |
115 | } | |
116 | spin_unlock(&capa_lock); | |
117 | ||
118 | if (expired) | |
119 | DEBUG_CAPA(D_SEC, &ocapa->c_capa, "expired"); | |
120 | return expired; | |
121 | } | |
122 | ||
123 | static void sort_add_capa(struct obd_capa *ocapa, struct list_head *head) | |
124 | { | |
125 | struct obd_capa *tmp; | |
126 | struct list_head *before = NULL; | |
127 | ||
128 | /* TODO: client capa is sorted by expiry, this could be optimized */ | |
129 | list_for_each_entry_reverse(tmp, head, c_list) { | |
130 | if (cfs_time_aftereq(ocapa->c_expiry, tmp->c_expiry)) { | |
131 | before = &tmp->c_list; | |
132 | break; | |
133 | } | |
134 | } | |
135 | ||
136 | LASSERT(&ocapa->c_list != before); | |
137 | list_add(&ocapa->c_list, before ?: head); | |
138 | } | |
139 | ||
140 | static inline int obd_capa_open_count(struct obd_capa *oc) | |
141 | { | |
142 | struct ll_inode_info *lli = ll_i2info(oc->u.cli.inode); | |
143 | return atomic_read(&lli->lli_open_count); | |
144 | } | |
145 | ||
146 | static void ll_delete_capa(struct obd_capa *ocapa) | |
147 | { | |
148 | struct ll_inode_info *lli = ll_i2info(ocapa->u.cli.inode); | |
149 | ||
150 | if (capa_for_mds(&ocapa->c_capa)) { | |
151 | LASSERT(lli->lli_mds_capa == ocapa); | |
152 | lli->lli_mds_capa = NULL; | |
153 | } else if (capa_for_oss(&ocapa->c_capa)) { | |
154 | list_del_init(&ocapa->u.cli.lli_list); | |
155 | } | |
156 | ||
157 | DEBUG_CAPA(D_SEC, &ocapa->c_capa, "free client"); | |
158 | list_del_init(&ocapa->c_list); | |
159 | capa_count[CAPA_SITE_CLIENT]--; | |
160 | /* release the ref when alloc */ | |
161 | capa_put(ocapa); | |
162 | } | |
163 | ||
164 | /* three places where client capa is deleted: | |
165 | * 1. capa_thread_main(), main place to delete expired capa. | |
166 | * 2. ll_clear_inode_capas() in ll_clear_inode(). | |
167 | * 3. ll_truncate_free_capa() delete truncate capa explicitly in ll_setattr_ost(). | |
168 | */ | |
169 | static int capa_thread_main(void *unused) | |
170 | { | |
171 | struct obd_capa *ocapa, *tmp, *next; | |
172 | struct inode *inode = NULL; | |
173 | struct l_wait_info lwi = { 0 }; | |
174 | int rc; | |
d7e09d03 PT |
175 | |
176 | thread_set_flags(&ll_capa_thread, SVC_RUNNING); | |
177 | wake_up(&ll_capa_thread.t_ctl_waitq); | |
178 | ||
179 | while (1) { | |
180 | l_wait_event(ll_capa_thread.t_ctl_waitq, | |
181 | !thread_is_running(&ll_capa_thread) || | |
182 | have_expired_capa(), | |
183 | &lwi); | |
184 | ||
185 | if (!thread_is_running(&ll_capa_thread)) | |
186 | break; | |
187 | ||
188 | next = NULL; | |
189 | ||
190 | spin_lock(&capa_lock); | |
191 | list_for_each_entry_safe(ocapa, tmp, ll_capa_list, c_list) { | |
192 | __u64 ibits; | |
193 | ||
194 | LASSERT(ocapa->c_capa.lc_opc != CAPA_OPC_OSS_TRUNC); | |
195 | ||
196 | if (!capa_is_to_expire(ocapa)) { | |
197 | next = ocapa; | |
198 | break; | |
199 | } | |
200 | ||
201 | list_del_init(&ocapa->c_list); | |
202 | ||
203 | /* for MDS capability, only renew those which belong to | |
204 | * dir, or its inode is opened, or client holds LOOKUP | |
205 | * lock. | |
206 | */ | |
207 | /* ibits may be changed by ll_have_md_lock() so we have | |
208 | * to set it each time */ | |
209 | ibits = MDS_INODELOCK_LOOKUP; | |
210 | if (capa_for_mds(&ocapa->c_capa) && | |
211 | !S_ISDIR(ocapa->u.cli.inode->i_mode) && | |
212 | obd_capa_open_count(ocapa) == 0 && | |
213 | !ll_have_md_lock(ocapa->u.cli.inode, | |
214 | &ibits, LCK_MINMODE)) { | |
215 | DEBUG_CAPA(D_SEC, &ocapa->c_capa, | |
216 | "skip renewal for"); | |
217 | sort_add_capa(ocapa, &ll_idle_capas); | |
218 | continue; | |
219 | } | |
220 | ||
221 | /* for OSS capability, only renew those whose inode is | |
222 | * opened. | |
223 | */ | |
224 | if (capa_for_oss(&ocapa->c_capa) && | |
225 | obd_capa_open_count(ocapa) == 0) { | |
226 | /* oss capa with open count == 0 won't renew, | |
227 | * move to idle list */ | |
228 | sort_add_capa(ocapa, &ll_idle_capas); | |
229 | continue; | |
230 | } | |
231 | ||
232 | /* NB iput() is in ll_update_capa() */ | |
233 | inode = igrab(ocapa->u.cli.inode); | |
234 | if (inode == NULL) { | |
235 | DEBUG_CAPA(D_ERROR, &ocapa->c_capa, | |
236 | "igrab failed for"); | |
237 | continue; | |
238 | } | |
239 | ||
240 | capa_get(ocapa); | |
241 | ll_capa_renewed++; | |
242 | spin_unlock(&capa_lock); | |
243 | rc = md_renew_capa(ll_i2mdexp(inode), ocapa, | |
244 | ll_update_capa); | |
245 | spin_lock(&capa_lock); | |
246 | if (rc) { | |
247 | DEBUG_CAPA(D_ERROR, &ocapa->c_capa, | |
248 | "renew failed: %d", rc); | |
249 | ll_capa_renewal_failed++; | |
250 | } | |
251 | } | |
252 | ||
253 | if (next) | |
254 | update_capa_timer(next, capa_renewal_time(next)); | |
255 | ||
256 | list_for_each_entry_safe(ocapa, tmp, &ll_idle_capas, | |
257 | c_list) { | |
258 | if (!capa_is_expired(ocapa)) { | |
259 | if (!next) | |
260 | update_capa_timer(ocapa, | |
261 | ocapa->c_expiry); | |
262 | break; | |
263 | } | |
264 | ||
265 | if (atomic_read(&ocapa->c_refc) > 1) { | |
266 | DEBUG_CAPA(D_SEC, &ocapa->c_capa, | |
267 | "expired(c_refc %d), don't release", | |
268 | atomic_read(&ocapa->c_refc)); | |
269 | /* don't try to renew any more */ | |
270 | list_del_init(&ocapa->c_list); | |
271 | continue; | |
272 | } | |
273 | ||
274 | /* expired capa is released. */ | |
275 | DEBUG_CAPA(D_SEC, &ocapa->c_capa, "release expired"); | |
276 | ll_delete_capa(ocapa); | |
277 | } | |
278 | ||
279 | spin_unlock(&capa_lock); | |
280 | } | |
281 | ||
282 | thread_set_flags(&ll_capa_thread, SVC_STOPPED); | |
283 | wake_up(&ll_capa_thread.t_ctl_waitq); | |
0a3bdb00 | 284 | return 0; |
d7e09d03 PT |
285 | } |
286 | ||
287 | void ll_capa_timer_callback(unsigned long unused) | |
288 | { | |
289 | wake_up(&ll_capa_thread.t_ctl_waitq); | |
290 | } | |
291 | ||
292 | int ll_capa_thread_start(void) | |
293 | { | |
68b636b6 | 294 | struct task_struct *task; |
d7e09d03 PT |
295 | |
296 | init_waitqueue_head(&ll_capa_thread.t_ctl_waitq); | |
297 | ||
298 | task = kthread_run(capa_thread_main, NULL, "ll_capa"); | |
299 | if (IS_ERR(task)) { | |
300 | CERROR("cannot start expired capa thread: rc %ld\n", | |
301 | PTR_ERR(task)); | |
0a3bdb00 | 302 | return PTR_ERR(task); |
d7e09d03 PT |
303 | } |
304 | wait_event(ll_capa_thread.t_ctl_waitq, | |
305 | thread_is_running(&ll_capa_thread)); | |
306 | ||
0a3bdb00 | 307 | return 0; |
d7e09d03 PT |
308 | } |
309 | ||
310 | void ll_capa_thread_stop(void) | |
311 | { | |
312 | thread_set_flags(&ll_capa_thread, SVC_STOPPING); | |
313 | wake_up(&ll_capa_thread.t_ctl_waitq); | |
314 | wait_event(ll_capa_thread.t_ctl_waitq, | |
315 | thread_is_stopped(&ll_capa_thread)); | |
316 | } | |
317 | ||
318 | struct obd_capa *ll_osscapa_get(struct inode *inode, __u64 opc) | |
319 | { | |
320 | struct ll_inode_info *lli = ll_i2info(inode); | |
321 | struct obd_capa *ocapa; | |
322 | int found = 0; | |
323 | ||
d7e09d03 | 324 | if ((ll_i2sbi(inode)->ll_flags & LL_SBI_OSS_CAPA) == 0) |
0a3bdb00 | 325 | return NULL; |
d7e09d03 PT |
326 | |
327 | LASSERT(opc == CAPA_OPC_OSS_WRITE || opc == CAPA_OPC_OSS_RW || | |
328 | opc == CAPA_OPC_OSS_TRUNC); | |
329 | ||
330 | spin_lock(&capa_lock); | |
331 | list_for_each_entry(ocapa, &lli->lli_oss_capas, u.cli.lli_list) { | |
332 | if (capa_is_expired(ocapa)) | |
333 | continue; | |
334 | if ((opc & CAPA_OPC_OSS_WRITE) && | |
335 | capa_opc_supported(&ocapa->c_capa, CAPA_OPC_OSS_WRITE)) { | |
336 | found = 1; | |
337 | break; | |
338 | } else if ((opc & CAPA_OPC_OSS_READ) && | |
339 | capa_opc_supported(&ocapa->c_capa, | |
340 | CAPA_OPC_OSS_READ)) { | |
341 | found = 1; | |
342 | break; | |
343 | } else if ((opc & CAPA_OPC_OSS_TRUNC) && | |
344 | capa_opc_supported(&ocapa->c_capa, opc)) { | |
345 | found = 1; | |
346 | break; | |
347 | } | |
348 | } | |
349 | ||
350 | if (found) { | |
351 | LASSERT(lu_fid_eq(capa_fid(&ocapa->c_capa), | |
352 | ll_inode2fid(inode))); | |
353 | LASSERT(ocapa->c_site == CAPA_SITE_CLIENT); | |
354 | ||
355 | capa_get(ocapa); | |
356 | ||
357 | DEBUG_CAPA(D_SEC, &ocapa->c_capa, "found client"); | |
358 | } else { | |
359 | ocapa = NULL; | |
360 | ||
361 | if (atomic_read(&ll_capa_debug)) { | |
362 | CERROR("no capability for "DFID" opc "LPX64"\n", | |
363 | PFID(&lli->lli_fid), opc); | |
364 | atomic_set(&ll_capa_debug, 0); | |
365 | } | |
366 | } | |
367 | spin_unlock(&capa_lock); | |
368 | ||
0a3bdb00 | 369 | return ocapa; |
d7e09d03 PT |
370 | } |
371 | EXPORT_SYMBOL(ll_osscapa_get); | |
372 | ||
373 | struct obd_capa *ll_mdscapa_get(struct inode *inode) | |
374 | { | |
375 | struct ll_inode_info *lli = ll_i2info(inode); | |
376 | struct obd_capa *ocapa; | |
d7e09d03 PT |
377 | |
378 | LASSERT(inode != NULL); | |
379 | ||
380 | if ((ll_i2sbi(inode)->ll_flags & LL_SBI_MDS_CAPA) == 0) | |
0a3bdb00 | 381 | return NULL; |
d7e09d03 PT |
382 | |
383 | spin_lock(&capa_lock); | |
384 | ocapa = capa_get(lli->lli_mds_capa); | |
385 | spin_unlock(&capa_lock); | |
386 | if (!ocapa && atomic_read(&ll_capa_debug)) { | |
387 | CERROR("no mds capability for "DFID"\n", PFID(&lli->lli_fid)); | |
388 | atomic_set(&ll_capa_debug, 0); | |
389 | } | |
390 | ||
0a3bdb00 | 391 | return ocapa; |
d7e09d03 PT |
392 | } |
393 | ||
394 | static struct obd_capa *do_add_mds_capa(struct inode *inode, | |
395 | struct obd_capa *ocapa) | |
396 | { | |
397 | struct ll_inode_info *lli = ll_i2info(inode); | |
398 | struct obd_capa *old = lli->lli_mds_capa; | |
399 | struct lustre_capa *capa = &ocapa->c_capa; | |
400 | ||
401 | if (!old) { | |
402 | ocapa->u.cli.inode = inode; | |
403 | lli->lli_mds_capa = ocapa; | |
404 | capa_count[CAPA_SITE_CLIENT]++; | |
405 | ||
406 | DEBUG_CAPA(D_SEC, capa, "add MDS"); | |
407 | } else { | |
408 | spin_lock(&old->c_lock); | |
409 | old->c_capa = *capa; | |
410 | spin_unlock(&old->c_lock); | |
411 | ||
412 | DEBUG_CAPA(D_SEC, capa, "update MDS"); | |
413 | ||
414 | capa_put(ocapa); | |
415 | ocapa = old; | |
416 | } | |
417 | return ocapa; | |
418 | } | |
419 | ||
420 | static struct obd_capa *do_lookup_oss_capa(struct inode *inode, int opc) | |
421 | { | |
422 | struct ll_inode_info *lli = ll_i2info(inode); | |
423 | struct obd_capa *ocapa; | |
424 | ||
425 | /* inside capa_lock */ | |
426 | list_for_each_entry(ocapa, &lli->lli_oss_capas, u.cli.lli_list) { | |
427 | if ((capa_opc(&ocapa->c_capa) & opc) != opc) | |
428 | continue; | |
429 | ||
430 | LASSERT(lu_fid_eq(capa_fid(&ocapa->c_capa), | |
431 | ll_inode2fid(inode))); | |
432 | LASSERT(ocapa->c_site == CAPA_SITE_CLIENT); | |
433 | ||
434 | DEBUG_CAPA(D_SEC, &ocapa->c_capa, "found client"); | |
435 | return ocapa; | |
436 | } | |
437 | ||
438 | return NULL; | |
439 | } | |
440 | ||
441 | static inline void inode_add_oss_capa(struct inode *inode, | |
442 | struct obd_capa *ocapa) | |
443 | { | |
444 | struct ll_inode_info *lli = ll_i2info(inode); | |
445 | struct obd_capa *tmp; | |
446 | struct list_head *next = NULL; | |
447 | ||
448 | /* capa is sorted in lli_oss_capas so lookup can always find the | |
449 | * latest one */ | |
450 | list_for_each_entry(tmp, &lli->lli_oss_capas, u.cli.lli_list) { | |
451 | if (cfs_time_after(ocapa->c_expiry, tmp->c_expiry)) { | |
452 | next = &tmp->u.cli.lli_list; | |
453 | break; | |
454 | } | |
455 | } | |
456 | LASSERT(&ocapa->u.cli.lli_list != next); | |
457 | list_move_tail(&ocapa->u.cli.lli_list, next ?: &lli->lli_oss_capas); | |
458 | } | |
459 | ||
460 | static struct obd_capa *do_add_oss_capa(struct inode *inode, | |
461 | struct obd_capa *ocapa) | |
462 | { | |
463 | struct obd_capa *old; | |
464 | struct lustre_capa *capa = &ocapa->c_capa; | |
465 | ||
466 | LASSERTF(S_ISREG(inode->i_mode), | |
467 | "inode has oss capa, but not regular file, mode: %d\n", | |
468 | inode->i_mode); | |
469 | ||
470 | /* FIXME: can't replace it so easily with fine-grained opc */ | |
471 | old = do_lookup_oss_capa(inode, capa_opc(capa) & CAPA_OPC_OSS_ONLY); | |
472 | if (!old) { | |
473 | ocapa->u.cli.inode = inode; | |
474 | INIT_LIST_HEAD(&ocapa->u.cli.lli_list); | |
475 | capa_count[CAPA_SITE_CLIENT]++; | |
476 | ||
477 | DEBUG_CAPA(D_SEC, capa, "add OSS"); | |
478 | } else { | |
479 | spin_lock(&old->c_lock); | |
480 | old->c_capa = *capa; | |
481 | spin_unlock(&old->c_lock); | |
482 | ||
483 | DEBUG_CAPA(D_SEC, capa, "update OSS"); | |
484 | ||
485 | capa_put(ocapa); | |
486 | ocapa = old; | |
487 | } | |
488 | ||
489 | inode_add_oss_capa(inode, ocapa); | |
490 | return ocapa; | |
491 | } | |
492 | ||
493 | struct obd_capa *ll_add_capa(struct inode *inode, struct obd_capa *ocapa) | |
494 | { | |
495 | spin_lock(&capa_lock); | |
496 | ocapa = capa_for_mds(&ocapa->c_capa) ? do_add_mds_capa(inode, ocapa) : | |
497 | do_add_oss_capa(inode, ocapa); | |
498 | ||
499 | /* truncate capa won't renew */ | |
500 | if (ocapa->c_capa.lc_opc != CAPA_OPC_OSS_TRUNC) { | |
501 | set_capa_expiry(ocapa); | |
502 | list_del_init(&ocapa->c_list); | |
503 | sort_add_capa(ocapa, ll_capa_list); | |
504 | ||
505 | update_capa_timer(ocapa, capa_renewal_time(ocapa)); | |
506 | } | |
507 | ||
508 | spin_unlock(&capa_lock); | |
509 | ||
510 | atomic_set(&ll_capa_debug, 1); | |
511 | return ocapa; | |
512 | } | |
513 | ||
514 | static inline void delay_capa_renew(struct obd_capa *oc, cfs_time_t delay) | |
515 | { | |
516 | /* NB: set a fake expiry for this capa to prevent it renew too soon */ | |
517 | oc->c_expiry = cfs_time_add(oc->c_expiry, cfs_time_seconds(delay)); | |
518 | } | |
519 | ||
2d95f10e | 520 | static int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa) |
d7e09d03 PT |
521 | { |
522 | struct inode *inode = ocapa->u.cli.inode; | |
523 | int rc = 0; | |
d7e09d03 PT |
524 | |
525 | LASSERT(ocapa); | |
526 | ||
527 | if (IS_ERR(capa)) { | |
528 | /* set error code */ | |
529 | rc = PTR_ERR(capa); | |
530 | spin_lock(&capa_lock); | |
531 | if (rc == -ENOENT) { | |
532 | DEBUG_CAPA(D_SEC, &ocapa->c_capa, | |
533 | "renewal canceled because object removed"); | |
534 | ll_capa_renewal_noent++; | |
535 | } else { | |
536 | ll_capa_renewal_failed++; | |
537 | ||
538 | /* failed capa won't be renewed any longer, but if -EIO, | |
539 | * client might be doing recovery, retry in 2 min. */ | |
540 | if (rc == -EIO && !capa_is_expired(ocapa)) { | |
541 | delay_capa_renew(ocapa, 120); | |
542 | DEBUG_CAPA(D_ERROR, &ocapa->c_capa, | |
543 | "renewal failed: -EIO, " | |
544 | "retry in 2 mins"); | |
545 | ll_capa_renewal_retries++; | |
546 | GOTO(retry, rc); | |
547 | } else { | |
548 | DEBUG_CAPA(D_ERROR, &ocapa->c_capa, | |
549 | "renewal failed(rc: %d) for", rc); | |
550 | } | |
551 | } | |
552 | ||
553 | list_del_init(&ocapa->c_list); | |
554 | sort_add_capa(ocapa, &ll_idle_capas); | |
555 | spin_unlock(&capa_lock); | |
556 | ||
557 | capa_put(ocapa); | |
558 | iput(inode); | |
0a3bdb00 | 559 | return rc; |
d7e09d03 PT |
560 | } |
561 | ||
562 | spin_lock(&ocapa->c_lock); | |
563 | LASSERT(!memcmp(&ocapa->c_capa, capa, | |
564 | offsetof(struct lustre_capa, lc_opc))); | |
565 | ocapa->c_capa = *capa; | |
566 | set_capa_expiry(ocapa); | |
567 | spin_unlock(&ocapa->c_lock); | |
568 | ||
569 | spin_lock(&capa_lock); | |
570 | if (capa_for_oss(capa)) | |
571 | inode_add_oss_capa(inode, ocapa); | |
572 | DEBUG_CAPA(D_SEC, capa, "renew"); | |
d7e09d03 PT |
573 | retry: |
574 | list_del_init(&ocapa->c_list); | |
575 | sort_add_capa(ocapa, ll_capa_list); | |
576 | update_capa_timer(ocapa, capa_renewal_time(ocapa)); | |
577 | spin_unlock(&capa_lock); | |
578 | ||
579 | capa_put(ocapa); | |
580 | iput(inode); | |
581 | return rc; | |
582 | } | |
583 | ||
584 | void ll_capa_open(struct inode *inode) | |
585 | { | |
586 | struct ll_inode_info *lli = ll_i2info(inode); | |
587 | ||
588 | if ((ll_i2sbi(inode)->ll_flags & (LL_SBI_MDS_CAPA | LL_SBI_OSS_CAPA)) | |
589 | == 0) | |
590 | return; | |
591 | ||
592 | if (!S_ISREG(inode->i_mode)) | |
593 | return; | |
594 | ||
595 | atomic_inc(&lli->lli_open_count); | |
596 | } | |
597 | ||
598 | void ll_capa_close(struct inode *inode) | |
599 | { | |
600 | struct ll_inode_info *lli = ll_i2info(inode); | |
601 | ||
602 | if ((ll_i2sbi(inode)->ll_flags & (LL_SBI_MDS_CAPA | LL_SBI_OSS_CAPA)) | |
603 | == 0) | |
604 | return; | |
605 | ||
606 | if (!S_ISREG(inode->i_mode)) | |
607 | return; | |
608 | ||
609 | atomic_dec(&lli->lli_open_count); | |
610 | } | |
611 | ||
612 | /* delete CAPA_OPC_OSS_TRUNC only */ | |
613 | void ll_truncate_free_capa(struct obd_capa *ocapa) | |
614 | { | |
615 | if (!ocapa) | |
616 | return; | |
617 | ||
618 | LASSERT(ocapa->c_capa.lc_opc & CAPA_OPC_OSS_TRUNC); | |
619 | DEBUG_CAPA(D_SEC, &ocapa->c_capa, "free truncate"); | |
620 | ||
621 | /* release ref when find */ | |
622 | capa_put(ocapa); | |
623 | if (likely(ocapa->c_capa.lc_opc == CAPA_OPC_OSS_TRUNC)) { | |
624 | spin_lock(&capa_lock); | |
625 | ll_delete_capa(ocapa); | |
626 | spin_unlock(&capa_lock); | |
627 | } | |
628 | } | |
629 | ||
630 | void ll_clear_inode_capas(struct inode *inode) | |
631 | { | |
632 | struct ll_inode_info *lli = ll_i2info(inode); | |
633 | struct obd_capa *ocapa, *tmp; | |
634 | ||
635 | spin_lock(&capa_lock); | |
636 | ocapa = lli->lli_mds_capa; | |
637 | if (ocapa) | |
638 | ll_delete_capa(ocapa); | |
639 | ||
640 | list_for_each_entry_safe(ocapa, tmp, &lli->lli_oss_capas, | |
641 | u.cli.lli_list) | |
642 | ll_delete_capa(ocapa); | |
643 | spin_unlock(&capa_lock); | |
644 | } | |
645 | ||
646 | void ll_print_capa_stat(struct ll_sb_info *sbi) | |
647 | { | |
648 | if (sbi->ll_flags & (LL_SBI_MDS_CAPA | LL_SBI_OSS_CAPA)) | |
649 | LCONSOLE_INFO("Fid capabilities renewed: %llu\n" | |
650 | "Fid capabilities renewal ENOENT: %llu\n" | |
651 | "Fid capabilities failed to renew: %llu\n" | |
652 | "Fid capabilities renewal retries: %llu\n", | |
653 | ll_capa_renewed, ll_capa_renewal_noent, | |
654 | ll_capa_renewal_failed, ll_capa_renewal_retries); | |
655 | } |