4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/llite/llite_lib.c
33 * Lustre Light Super operations
36 #define DEBUG_SUBSYSTEM S_LLITE
38 #include <linux/cpu.h>
39 #include <linux/module.h>
40 #include <linux/random.h>
41 #include <linux/statfs.h>
42 #include <linux/time.h>
43 #include <linux/file.h>
44 #include <linux/types.h>
45 #include <libcfs/linux/linux-uuid.h>
46 #include <linux/version.h>
48 #include <linux/user_namespace.h>
49 #include <linux/delay.h>
50 #include <linux/uidgid.h>
51 #include <linux/fs_struct.h>
53 #ifndef HAVE_CPUS_READ_LOCK
54 #include <libcfs/linux/linux-cpu.h>
56 #include <libcfs/linux/linux-misc.h>
57 #include <uapi/linux/lustre/lustre_ioctl.h>
58 #ifdef HAVE_UAPI_LINUX_MOUNT_H
59 #include <uapi/linux/mount.h>
62 #include <lustre_ha.h>
63 #include <lustre_dlm.h>
64 #include <lprocfs_status.h>
65 #include <lustre_disk.h>
66 #include <uapi/linux/lustre/lustre_param.h>
67 #include <lustre_log.h>
68 #include <cl_object.h>
69 #include <obd_cksum.h>
70 #include "llite_internal.h"
72 struct kmem_cache *ll_file_data_slab;
75 #define log2(n) ffz(~(n))
79 * If there is only one number of core visible to Lustre,
80 * async readahead will be disabled, to avoid massive over
81 * subscription, we use 1/2 of active cores as default max
82 * async readahead requests.
84 static inline unsigned int ll_get_ra_async_max_active(void)
86 return cfs_cpt_weight(cfs_cpt_tab, CFS_CPT_ANY) >> 1;
89 static struct ll_sb_info *ll_init_sbi(void)
91 struct ll_sb_info *sbi = NULL;
93 unsigned long lru_page_max;
101 RETURN(ERR_PTR(-ENOMEM));
103 rc = pcc_super_init(&sbi->ll_pcc_super);
107 spin_lock_init(&sbi->ll_lock);
108 mutex_init(&sbi->ll_lco.lco_lock);
109 spin_lock_init(&sbi->ll_pp_extent_lock);
110 spin_lock_init(&sbi->ll_process_lock);
111 sbi->ll_rw_stats_on = 0;
112 sbi->ll_statfs_max_age = OBD_STATFS_CACHE_SECONDS;
115 pages = si.totalram - si.totalhigh;
116 lru_page_max = pages / 2;
118 sbi->ll_ra_info.ra_async_max_active = ll_get_ra_async_max_active();
119 sbi->ll_ra_info.ll_readahead_wq =
120 cfs_cpt_bind_workqueue("ll-readahead-wq", cfs_cpt_tab,
122 sbi->ll_ra_info.ra_async_max_active);
123 if (IS_ERR(sbi->ll_ra_info.ll_readahead_wq))
124 GOTO(out_pcc, rc = PTR_ERR(sbi->ll_ra_info.ll_readahead_wq));
126 /* initialize ll_cache data */
127 sbi->ll_cache = cl_cache_init(lru_page_max);
128 if (sbi->ll_cache == NULL)
129 GOTO(out_destroy_ra, rc = -ENOMEM);
131 /* initialize foreign symlink prefix path */
132 OBD_ALLOC(sbi->ll_foreign_symlink_prefix, sizeof("/mnt/"));
133 if (sbi->ll_foreign_symlink_prefix == NULL)
134 GOTO(out_destroy_ra, rc = -ENOMEM);
135 memcpy(sbi->ll_foreign_symlink_prefix, "/mnt/", sizeof("/mnt/"));
136 sbi->ll_foreign_symlink_prefix_size = sizeof("/mnt/");
138 /* initialize foreign symlink upcall path, none by default */
139 OBD_ALLOC(sbi->ll_foreign_symlink_upcall, sizeof("none"));
140 if (sbi->ll_foreign_symlink_upcall == NULL)
141 GOTO(out_destroy_ra, rc = -ENOMEM);
142 memcpy(sbi->ll_foreign_symlink_upcall, "none", sizeof("none"));
143 sbi->ll_foreign_symlink_upcall_items = NULL;
144 sbi->ll_foreign_symlink_upcall_nb_items = 0;
145 init_rwsem(&sbi->ll_foreign_symlink_sem);
146 /* foreign symlink support (LL_SBI_FOREIGN_SYMLINK in ll_flags)
147 * not enabled by default
150 sbi->ll_ra_info.ra_max_pages =
151 min(pages / 32, SBI_DEFAULT_READ_AHEAD_MAX);
152 sbi->ll_ra_info.ra_max_pages_per_file =
153 min(sbi->ll_ra_info.ra_max_pages / 4,
154 SBI_DEFAULT_READ_AHEAD_PER_FILE_MAX);
155 sbi->ll_ra_info.ra_async_pages_per_file_threshold =
156 sbi->ll_ra_info.ra_max_pages_per_file;
157 sbi->ll_ra_info.ra_range_pages = SBI_DEFAULT_RA_RANGE_PAGES;
158 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = -1;
159 atomic_set(&sbi->ll_ra_info.ra_async_inflight, 0);
161 set_bit(LL_SBI_VERBOSE, sbi->ll_flags);
162 #ifdef ENABLE_CHECKSUM
163 set_bit(LL_SBI_CHECKSUM, sbi->ll_flags);
166 set_bit(LL_SBI_FLOCK, sbi->ll_flags);
169 #ifdef HAVE_LRU_RESIZE_SUPPORT
170 set_bit(LL_SBI_LRU_RESIZE, sbi->ll_flags);
172 set_bit(LL_SBI_LAZYSTATFS, sbi->ll_flags);
174 /* metadata statahead is enabled by default */
175 sbi->ll_sa_running_max = LL_SA_RUNNING_DEF;
176 sbi->ll_sa_max = LL_SA_RPC_DEF;
177 atomic_set(&sbi->ll_sa_total, 0);
178 atomic_set(&sbi->ll_sa_wrong, 0);
179 atomic_set(&sbi->ll_sa_running, 0);
180 atomic_set(&sbi->ll_agl_total, 0);
181 set_bit(LL_SBI_AGL_ENABLED, sbi->ll_flags);
182 set_bit(LL_SBI_FAST_READ, sbi->ll_flags);
183 set_bit(LL_SBI_TINY_WRITE, sbi->ll_flags);
184 set_bit(LL_SBI_PARALLEL_DIO, sbi->ll_flags);
185 ll_sbi_set_encrypt(sbi, true);
186 ll_sbi_set_name_encrypt(sbi, true);
189 sbi->ll_squash.rsi_uid = 0;
190 sbi->ll_squash.rsi_gid = 0;
191 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
192 spin_lock_init(&sbi->ll_squash.rsi_lock);
194 /* Per-filesystem file heat */
195 sbi->ll_heat_decay_weight = SBI_DEFAULT_HEAT_DECAY_WEIGHT;
196 sbi->ll_heat_period_second = SBI_DEFAULT_HEAT_PERIOD_SECOND;
198 /* Per-fs open heat level before requesting open lock */
199 sbi->ll_oc_thrsh_count = SBI_DEFAULT_OPENCACHE_THRESHOLD_COUNT;
200 sbi->ll_oc_max_ms = SBI_DEFAULT_OPENCACHE_THRESHOLD_MAX_MS;
201 sbi->ll_oc_thrsh_ms = SBI_DEFAULT_OPENCACHE_THRESHOLD_MS;
204 if (sbi->ll_foreign_symlink_prefix)
205 OBD_FREE(sbi->ll_foreign_symlink_prefix, sizeof("/mnt/"));
207 cl_cache_decref(sbi->ll_cache);
208 sbi->ll_cache = NULL;
210 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
212 pcc_super_fini(&sbi->ll_pcc_super);
218 static void ll_free_sbi(struct super_block *sb)
220 struct ll_sb_info *sbi = ll_s2sbi(sb);
224 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
225 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
226 if (sbi->ll_ra_info.ll_readahead_wq)
227 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
228 if (sbi->ll_cache != NULL) {
229 cl_cache_decref(sbi->ll_cache);
230 sbi->ll_cache = NULL;
232 if (sbi->ll_foreign_symlink_prefix) {
233 OBD_FREE(sbi->ll_foreign_symlink_prefix,
234 sbi->ll_foreign_symlink_prefix_size);
235 sbi->ll_foreign_symlink_prefix = NULL;
237 if (sbi->ll_foreign_symlink_upcall) {
238 OBD_FREE(sbi->ll_foreign_symlink_upcall,
239 strlen(sbi->ll_foreign_symlink_upcall) +
241 sbi->ll_foreign_symlink_upcall = NULL;
243 if (sbi->ll_foreign_symlink_upcall_items) {
245 int nb_items = sbi->ll_foreign_symlink_upcall_nb_items;
246 struct ll_foreign_symlink_upcall_item *items =
247 sbi->ll_foreign_symlink_upcall_items;
249 for (i = 0 ; i < nb_items; i++)
250 if (items[i].type == STRING_TYPE)
251 OBD_FREE(items[i].string,
254 OBD_FREE_LARGE(items, nb_items *
255 sizeof(struct ll_foreign_symlink_upcall_item));
256 sbi->ll_foreign_symlink_upcall_items = NULL;
258 ll_free_rw_stats_info(sbi);
259 pcc_super_fini(&sbi->ll_pcc_super);
260 OBD_FREE(sbi, sizeof(*sbi));
265 static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
267 struct inode *root = NULL;
268 struct ll_sb_info *sbi = ll_s2sbi(sb);
269 struct obd_statfs *osfs = NULL;
270 struct ptlrpc_request *request = NULL;
271 struct obd_connect_data *data = NULL;
272 struct obd_uuid *uuid;
273 struct md_op_data *op_data;
274 struct lustre_md lmd;
276 int size, err, checksum;
282 sbi->ll_md_obd = class_name2obd(md);
283 if (!sbi->ll_md_obd) {
284 CERROR("MD %s: not setup or attached\n", md);
298 /* pass client page size via ocd_grant_blkbits, the server should report
299 * back its backend blocksize for grant calculation purpose */
300 data->ocd_grant_blkbits = PAGE_SHIFT;
302 /* indicate MDT features supported by this client */
303 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
304 OBD_CONNECT_ATTRFID | OBD_CONNECT_GRANT |
305 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
306 OBD_CONNECT_SRVLOCK |
307 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
308 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
309 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
310 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
311 OBD_CONNECT_64BITHASH |
312 OBD_CONNECT_EINPROGRESS |
313 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
314 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
315 OBD_CONNECT_MAX_EASIZE |
316 OBD_CONNECT_FLOCK_DEAD |
317 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
318 OBD_CONNECT_OPEN_BY_FID |
319 OBD_CONNECT_DIR_STRIPE |
320 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_CKSUM |
321 OBD_CONNECT_SUBTREE |
322 OBD_CONNECT_MULTIMODRPCS |
323 OBD_CONNECT_GRANT_PARAM |
324 OBD_CONNECT_GRANT_SHRINK |
325 OBD_CONNECT_SHORTIO | OBD_CONNECT_FLAGS2;
327 data->ocd_connect_flags2 = OBD_CONNECT2_DIR_MIGRATE |
328 OBD_CONNECT2_SUM_STATFS |
329 OBD_CONNECT2_OVERSTRIPING |
331 OBD_CONNECT2_LOCK_CONVERT |
332 OBD_CONNECT2_ARCHIVE_ID_ARRAY |
333 OBD_CONNECT2_INC_XID |
335 OBD_CONNECT2_ASYNC_DISCARD |
337 OBD_CONNECT2_CRUSH | OBD_CONNECT2_LSEEK |
338 OBD_CONNECT2_GETATTR_PFID |
339 OBD_CONNECT2_DOM_LVB |
340 OBD_CONNECT2_REP_MBITS |
341 OBD_CONNECT2_ATOMIC_OPEN_LOCK;
343 #ifdef HAVE_LRU_RESIZE_SUPPORT
344 if (test_bit(LL_SBI_LRU_RESIZE, sbi->ll_flags))
345 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
347 data->ocd_connect_flags |= OBD_CONNECT_ACL_FLAGS;
349 data->ocd_cksum_types = obd_cksum_types_supported_client();
351 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
352 /* flag mdc connection as lightweight, only used for test
353 * purpose, use with care */
354 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
356 data->ocd_ibits_known = MDS_INODELOCK_FULL;
357 data->ocd_version = LUSTRE_VERSION_CODE;
359 if (sb->s_flags & SB_RDONLY)
360 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
361 if (test_bit(LL_SBI_USER_XATTR, sbi->ll_flags))
362 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
365 /* Setting this indicates we correctly support S_NOSEC (See kernel
366 * commit 9e1f1de02c2275d7172e18dc4e7c2065777611bf)
368 sb->s_flags |= SB_NOSEC;
370 sbi->ll_fop = ll_select_file_operations(sbi);
372 /* always ping even if server suppress_pings */
373 if (test_bit(LL_SBI_ALWAYS_PING, sbi->ll_flags))
374 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
376 obd_connect_set_secctx(data);
377 if (ll_sbi_has_encrypt(sbi)) {
378 obd_connect_set_name_enc(data);
379 obd_connect_set_enc(data);
382 #if defined(CONFIG_SECURITY)
383 data->ocd_connect_flags2 |= OBD_CONNECT2_SELINUX_POLICY;
386 data->ocd_brw_size = MD_MAX_BRW_SIZE;
388 err = obd_connect(NULL, &sbi->ll_md_exp, sbi->ll_md_obd,
389 &sbi->ll_sb_uuid, data, sbi->ll_cache);
391 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
392 "recovery, of which this client is not a "
393 "part. Please wait for recovery to complete,"
394 " abort, or time out.\n", md);
397 CERROR("cannot connect to %s: rc = %d\n", md, err);
401 sbi->ll_md_exp->exp_connect_data = *data;
403 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
404 LUSTRE_SEQ_METADATA);
406 CERROR("%s: Can't init metadata layer FID infrastructure, "
407 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
411 /* For mount, we only need fs info from MDT0, and also in DNE, it
412 * can make sure the client can be mounted as long as MDT0 is
414 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
415 ktime_get_seconds() - sbi->ll_statfs_max_age,
416 OBD_STATFS_FOR_MDT0);
418 GOTO(out_md_fid, err);
420 /* This needs to be after statfs to ensure connect has finished.
421 * Note that "data" does NOT contain the valid connect reply.
422 * If connecting to a 1.8 server there will be no LMV device, so
423 * we can access the MDC export directly and exp_connect_flags will
424 * be non-zero, but if accessing an upgraded 2.1 server it will
425 * have the correct flags filled in.
426 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
427 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
428 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
429 valid != CLIENT_CONNECT_MDT_REQD) {
432 OBD_ALLOC_WAIT(buf, PAGE_SIZE);
433 obd_connect_flags2str(buf, PAGE_SIZE,
434 valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
435 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
436 "feature(s) needed for correct operation "
437 "of this client (%s). Please upgrade "
438 "server or downgrade client.\n",
439 sbi->ll_md_exp->exp_obd->obd_name, buf);
440 OBD_FREE(buf, PAGE_SIZE);
441 GOTO(out_md_fid, err = -EPROTO);
444 size = sizeof(*data);
445 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
446 KEY_CONN_DATA, &size, data);
448 CERROR("%s: Get connect data failed: rc = %d\n",
449 sbi->ll_md_exp->exp_obd->obd_name, err);
450 GOTO(out_md_fid, err);
453 LASSERT(osfs->os_bsize);
454 sb->s_blocksize = osfs->os_bsize;
455 sb->s_blocksize_bits = log2(osfs->os_bsize);
456 sb->s_magic = LL_SUPER_MAGIC;
457 sb->s_maxbytes = MAX_LFS_FILESIZE;
458 sbi->ll_namelen = osfs->os_namelen;
459 sbi->ll_mnt.mnt = current->fs->root.mnt;
460 sbi->ll_mnt_ns = current->nsproxy->mnt_ns;
462 if (test_bit(LL_SBI_USER_XATTR, sbi->ll_flags) &&
463 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
464 LCONSOLE_INFO("Disabling user_xattr feature because "
465 "it is not supported on the server\n");
466 clear_bit(LL_SBI_USER_XATTR, sbi->ll_flags);
469 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
471 sb->s_flags |= SB_POSIXACL;
473 set_bit(LL_SBI_ACL, sbi->ll_flags);
475 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
477 sb->s_flags &= ~SB_POSIXACL;
479 clear_bit(LL_SBI_ACL, sbi->ll_flags);
482 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
483 set_bit(LL_SBI_64BIT_HASH, sbi->ll_flags);
485 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
486 set_bit(LL_SBI_LAYOUT_LOCK, sbi->ll_flags);
488 if (obd_connect_has_secctx(data))
489 set_bit(LL_SBI_FILE_SECCTX, sbi->ll_flags);
491 if (ll_sbi_has_encrypt(sbi) && !obd_connect_has_enc(data)) {
492 if (ll_sb_has_test_dummy_encryption(sb))
493 LCONSOLE_WARN("%s: server %s does not support encryption feature, encryption deactivated.\n",
495 sbi->ll_md_exp->exp_obd->obd_name);
496 ll_sbi_set_encrypt(sbi, false);
499 if (ll_sbi_has_name_encrypt(sbi) && !obd_connect_has_name_enc(data)) {
500 struct lustre_sb_info *lsi = s2lsi(sb);
502 if (ll_sb_has_test_dummy_encryption(sb))
503 LCONSOLE_WARN("%s: server %s does not support name encryption, not using it.\n",
505 sbi->ll_md_exp->exp_obd->obd_name);
506 lsi->lsi_flags &= ~LSI_FILENAME_ENC;
507 ll_sbi_set_name_encrypt(sbi, false);
510 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
511 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
512 LCONSOLE_INFO("%s: disabling xattr cache due to "
513 "unknown maximum xattr size.\n", dt);
514 } else if (!sbi->ll_xattr_cache_set) {
515 /* If xattr_cache is already set (no matter 0 or 1)
516 * during processing llog, it won't be enabled here. */
517 set_bit(LL_SBI_XATTR_CACHE, sbi->ll_flags);
518 sbi->ll_xattr_cache_enabled = 1;
522 sbi->ll_dt_obd = class_name2obd(dt);
523 if (!sbi->ll_dt_obd) {
524 CERROR("DT %s: not setup or attached\n", dt);
525 GOTO(out_md_fid, err = -ENODEV);
528 /* pass client page size via ocd_grant_blkbits, the server should report
529 * back its backend blocksize for grant calculation purpose */
530 data->ocd_grant_blkbits = PAGE_SHIFT;
532 /* indicate OST features supported by this client */
533 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
534 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
535 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
536 OBD_CONNECT_SRVLOCK |
537 OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
538 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
539 OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
540 OBD_CONNECT_EINPROGRESS |
541 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
542 OBD_CONNECT_LAYOUTLOCK |
543 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
544 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_SHORTIO |
545 OBD_CONNECT_FLAGS2 | OBD_CONNECT_GRANT_SHRINK;
546 data->ocd_connect_flags2 = OBD_CONNECT2_LOCKAHEAD |
547 OBD_CONNECT2_INC_XID | OBD_CONNECT2_LSEEK |
548 OBD_CONNECT2_REP_MBITS;
550 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
551 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
553 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
554 * disabled by default, because it can still be enabled on the
555 * fly via /sys. As a consequence, we still need to come to an
556 * agreement on the supported algorithms at connect time
558 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
560 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
561 data->ocd_cksum_types = OBD_CKSUM_ADLER;
563 data->ocd_cksum_types = obd_cksum_types_supported_client();
565 #ifdef HAVE_LRU_RESIZE_SUPPORT
566 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
568 /* always ping even if server suppress_pings */
569 if (test_bit(LL_SBI_ALWAYS_PING, sbi->ll_flags))
570 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
572 if (ll_sbi_has_encrypt(sbi))
573 obd_connect_set_enc(data);
575 CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d "
576 "ocd_grant: %d\n", data->ocd_connect_flags,
577 data->ocd_version, data->ocd_grant);
579 sbi->ll_dt_obd->obd_upcall.onu_owner = &sbi->ll_lco;
580 sbi->ll_dt_obd->obd_upcall.onu_upcall = cl_ocd_update;
582 data->ocd_brw_size = DT_MAX_BRW_SIZE;
584 err = obd_connect(NULL, &sbi->ll_dt_exp, sbi->ll_dt_obd,
585 &sbi->ll_sb_uuid, data, sbi->ll_cache);
587 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
588 "recovery, of which this client is not a "
589 "part. Please wait for recovery to "
590 "complete, abort, or time out.\n", dt);
593 CERROR("%s: Cannot connect to %s: rc = %d\n",
594 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
598 if (ll_sbi_has_encrypt(sbi) &&
599 !obd_connect_has_enc(&sbi->ll_dt_obd->u.lov.lov_ocd)) {
600 if (ll_sb_has_test_dummy_encryption(sb))
601 LCONSOLE_WARN("%s: server %s does not support encryption feature, encryption deactivated.\n",
603 ll_sbi_set_encrypt(sbi, false);
604 } else if (ll_sb_has_test_dummy_encryption(sb)) {
605 LCONSOLE_WARN("Test dummy encryption mode enabled\n");
608 sbi->ll_dt_exp->exp_connect_data = *data;
610 /* Don't change value if it was specified in the config log */
611 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages == -1) {
612 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
613 max_t(unsigned long, SBI_DEFAULT_READ_AHEAD_WHOLE_MAX,
614 (data->ocd_brw_size >> PAGE_SHIFT));
615 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages >
616 sbi->ll_ra_info.ra_max_pages_per_file)
617 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
618 sbi->ll_ra_info.ra_max_pages_per_file;
621 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
622 LUSTRE_SEQ_METADATA);
624 CERROR("%s: Can't init data layer FID infrastructure, "
625 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
629 mutex_lock(&sbi->ll_lco.lco_lock);
630 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
631 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
632 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
633 mutex_unlock(&sbi->ll_lco.lco_lock);
635 fid_zero(&sbi->ll_root_fid);
636 err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
639 CERROR("cannot mds_connect: rc = %d\n", err);
640 GOTO(out_lock_cn_cb, err);
642 if (!fid_is_sane(&sbi->ll_root_fid)) {
643 CERROR("%s: Invalid root fid "DFID" during mount\n",
644 sbi->ll_md_exp->exp_obd->obd_name,
645 PFID(&sbi->ll_root_fid));
646 GOTO(out_lock_cn_cb, err = -EINVAL);
648 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
650 sb->s_op = &lustre_super_operations;
651 sb->s_xattr = ll_xattr_handlers;
652 #if THREAD_SIZE >= 8192 /*b=17630*/
653 sb->s_export_op = &lustre_export_operations;
655 #ifdef HAVE_LUSTRE_CRYPTO
656 llcrypt_set_ops(sb, &lustre_cryptops);
660 * XXX: move this to after cbd setup? */
661 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE |
663 if (test_bit(LL_SBI_ACL, sbi->ll_flags))
664 valid |= OBD_MD_FLACL;
666 OBD_ALLOC_PTR(op_data);
668 GOTO(out_lock_cn_cb, err = -ENOMEM);
670 op_data->op_fid1 = sbi->ll_root_fid;
671 op_data->op_mode = 0;
672 op_data->op_valid = valid;
674 err = md_getattr(sbi->ll_md_exp, op_data, &request);
676 /* We need enc ctx info, so reset it in op_data to
677 * prevent it from being freed.
679 encctx = op_data->op_file_encctx;
680 encctxlen = op_data->op_file_encctx_size;
681 op_data->op_file_encctx = NULL;
682 op_data->op_file_encctx_size = 0;
683 OBD_FREE_PTR(op_data);
685 CERROR("%s: md_getattr failed for root: rc = %d\n",
686 sbi->ll_md_exp->exp_obd->obd_name, err);
687 GOTO(out_lock_cn_cb, err);
690 err = md_get_lustre_md(sbi->ll_md_exp, &request->rq_pill,
691 sbi->ll_dt_exp, sbi->ll_md_exp, &lmd);
693 CERROR("failed to understand root inode md: rc = %d\n", err);
694 ptlrpc_req_finished(request);
695 GOTO(out_lock_cn_cb, err);
698 LASSERT(fid_is_sane(&sbi->ll_root_fid));
699 api32 = test_bit(LL_SBI_32BIT_API, sbi->ll_flags);
700 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid, api32), &lmd);
701 md_free_lustre_md(sbi->ll_md_exp, &lmd);
705 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
707 CERROR("%s: bad ll_iget() for root: rc = %d\n",
708 sbi->ll_fsname, err);
709 ptlrpc_req_finished(request);
715 "server returned encryption ctx for root inode "DFID"\n",
716 PFID(&sbi->ll_root_fid));
717 err = ll_set_encflags(root, encctx, encctxlen, true);
719 CWARN("%s: cannot set enc ctx for "DFID": rc = %d\n",
721 PFID(&sbi->ll_root_fid), err);
723 ptlrpc_req_finished(request);
725 checksum = test_bit(LL_SBI_CHECKSUM, sbi->ll_flags);
726 if (sbi->ll_checksum_set) {
727 err = obd_set_info_async(NULL, sbi->ll_dt_exp,
728 sizeof(KEY_CHECKSUM), KEY_CHECKSUM,
729 sizeof(checksum), &checksum, NULL);
731 CERROR("%s: Set checksum failed: rc = %d\n",
732 sbi->ll_dt_exp->exp_obd->obd_name, err);
738 sb->s_root = d_make_root(root);
739 if (sb->s_root == NULL) {
741 CERROR("%s: can't make root dentry: rc = %d\n",
742 sbi->ll_fsname, err);
746 sbi->ll_sdev_orig = sb->s_dev;
748 /* We set sb->s_dev equal on all lustre clients in order to support
749 * NFS export clustering. NFSD requires that the FSID be the same
751 /* s_dev is also used in lt_compare() to compare two fs, but that is
752 * only a node-local comparison. */
753 uuid = obd_get_uuid(sbi->ll_md_exp);
755 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
762 if (sbi->ll_dt_obd) {
763 err = sysfs_create_link(&sbi->ll_kset.kobj,
764 &sbi->ll_dt_obd->obd_kset.kobj,
765 sbi->ll_dt_obd->obd_type->typ_name);
767 CERROR("%s: could not register %s in llite: rc = %d\n",
768 dt, sbi->ll_fsname, err);
773 if (sbi->ll_md_obd) {
774 err = sysfs_create_link(&sbi->ll_kset.kobj,
775 &sbi->ll_md_obd->obd_kset.kobj,
776 sbi->ll_md_obd->obd_type->typ_name);
778 CERROR("%s: could not register %s in llite: rc = %d\n",
779 md, sbi->ll_fsname, err);
788 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
790 obd_disconnect(sbi->ll_dt_exp);
791 sbi->ll_dt_exp = NULL;
792 sbi->ll_dt_obd = NULL;
794 obd_fid_fini(sbi->ll_md_exp->exp_obd);
796 obd_disconnect(sbi->ll_md_exp);
797 sbi->ll_md_exp = NULL;
798 sbi->ll_md_obd = NULL;
807 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
811 size = sizeof(*lmmsize);
812 rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
813 KEY_MAX_EASIZE, &size, lmmsize);
815 CERROR("%s: cannot get max LOV EA size: rc = %d\n",
816 sbi->ll_dt_exp->exp_obd->obd_name, rc);
820 CDEBUG(D_INFO, "max LOV ea size: %d\n", *lmmsize);
823 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
824 KEY_MAX_EASIZE, &size, lmmsize);
826 CERROR("Get max mdsize error rc %d\n", rc);
828 CDEBUG(D_INFO, "max LMV ea size: %d\n", *lmmsize);
834 * Get the value of the default_easize parameter.
836 * \see client_obd::cl_default_mds_easize
838 * \param[in] sbi superblock info for this filesystem
839 * \param[out] lmmsize pointer to storage location for value
841 * \retval 0 on success
842 * \retval negative negated errno on failure
844 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
849 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
850 KEY_DEFAULT_EASIZE, &size, lmmsize);
852 CERROR("Get default mdsize error rc %d\n", rc);
858 * Set the default_easize parameter to the given value.
860 * \see client_obd::cl_default_mds_easize
862 * \param[in] sbi superblock info for this filesystem
863 * \param[in] lmmsize the size to set
865 * \retval 0 on success
866 * \retval negative negated errno on failure
868 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
872 if (lmmsize < sizeof(struct lov_mds_md) ||
873 lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
876 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
877 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
878 sizeof(int), &lmmsize, NULL);
883 static void client_common_put_super(struct super_block *sb)
885 struct ll_sb_info *sbi = ll_s2sbi(sb);
890 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
891 obd_disconnect(sbi->ll_dt_exp);
892 sbi->ll_dt_exp = NULL;
894 ll_debugfs_unregister_super(sb);
896 obd_fid_fini(sbi->ll_md_exp->exp_obd);
897 obd_disconnect(sbi->ll_md_exp);
898 sbi->ll_md_exp = NULL;
903 void ll_kill_super(struct super_block *sb)
905 struct ll_sb_info *sbi;
909 if (!(sb->s_flags & SB_ACTIVE))
913 /* we need restore s_dev from changed for clustred NFS before put_super
914 * because new kernels have cached s_dev and change sb->s_dev in
915 * put_super not affected real removing devices */
917 sb->s_dev = sbi->ll_sdev_orig;
919 /* wait running statahead threads to quit */
920 while (atomic_read(&sbi->ll_sa_running) > 0)
921 schedule_timeout_uninterruptible(
922 cfs_time_seconds(1) >> 3);
928 /* Since we use this table for ll_sbi_flags_seq_show make
929 * sure what you want displayed for a specific token that
930 * is listed more than once below be listed first. For
931 * example we want "checksum" displayed, not "nochecksum"
934 static const match_table_t ll_sbi_flags_name = {
935 {LL_SBI_NOLCK, "nolock"},
936 {LL_SBI_CHECKSUM, "checksum"},
937 {LL_SBI_CHECKSUM, "nochecksum"},
938 {LL_SBI_LOCALFLOCK, "localflock"},
939 {LL_SBI_FLOCK, "flock"},
940 {LL_SBI_FLOCK, "noflock"},
941 {LL_SBI_USER_XATTR, "user_xattr"},
942 {LL_SBI_USER_XATTR, "nouser_xattr"},
943 {LL_SBI_LRU_RESIZE, "lruresize"},
944 {LL_SBI_LRU_RESIZE, "nolruresize"},
945 {LL_SBI_LAZYSTATFS, "lazystatfs"},
946 {LL_SBI_LAZYSTATFS, "nolazystatfs"},
947 {LL_SBI_32BIT_API, "32bitapi"},
948 {LL_SBI_USER_FID2PATH, "user_fid2path"},
949 {LL_SBI_USER_FID2PATH, "nouser_fid2path"},
950 {LL_SBI_VERBOSE, "verbose"},
951 {LL_SBI_VERBOSE, "noverbose"},
952 {LL_SBI_ALWAYS_PING, "always_ping"},
953 {LL_SBI_TEST_DUMMY_ENCRYPTION, "test_dummy_encryption=%s"},
954 {LL_SBI_TEST_DUMMY_ENCRYPTION, "test_dummy_encryption"},
955 {LL_SBI_ENCRYPT, "encrypt"},
956 {LL_SBI_ENCRYPT, "noencrypt"},
957 {LL_SBI_FOREIGN_SYMLINK, "foreign_symlink=%s"},
958 {LL_SBI_NUM_MOUNT_OPT, NULL},
961 {LL_SBI_AGL_ENABLED, "agl"},
962 {LL_SBI_64BIT_HASH, "64bit_hash"},
963 {LL_SBI_LAYOUT_LOCK, "layout"},
964 {LL_SBI_XATTR_CACHE, "xattr_cache"},
965 {LL_SBI_NOROOTSQUASH, "norootsquash"},
966 {LL_SBI_FAST_READ, "fast_read"},
967 {LL_SBI_FILE_SECCTX, "file_secctx"},
968 {LL_SBI_TINY_WRITE, "tiny_write"},
969 {LL_SBI_FILE_HEAT, "file_heat"},
970 {LL_SBI_PARALLEL_DIO, "parallel_dio"},
971 {LL_SBI_ENCRYPT_NAME, "name_encrypt"},
974 int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
976 struct super_block *sb = m->private;
979 for (i = 0; i < LL_SBI_NUM_FLAGS; i++) {
982 if (!test_bit(i, ll_s2sbi(sb)->ll_flags))
985 for (j = 0; j < ARRAY_SIZE(ll_sbi_flags_name); j++) {
986 if (ll_sbi_flags_name[j].token == i &&
987 ll_sbi_flags_name[j].pattern) {
989 ll_sbi_flags_name[j].pattern);
998 /* non-client-specific mount options are parsed in lmd_parse */
999 static int ll_options(char *options, struct super_block *sb)
1001 struct ll_sb_info *sbi = ll_s2sbi(sb);
1002 char *s2, *s1, *opts;
1009 /* Don't stomp on lmd_opts */
1010 opts = kstrdup(options, GFP_KERNEL);
1016 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
1018 while ((s1 = strsep(&opts, ",")) != NULL) {
1019 substring_t args[MAX_OPT_ARGS];
1020 bool turn_off = false;
1026 CDEBUG(D_SUPER, "next opt=%s\n", s1);
1028 if (strncmp(s1, "no", 2) == 0)
1032 * Initialize args struct so we know whether arg was
1033 * found; some options take optional arguments.
1036 args[0].from = NULL;
1037 token = match_token(s1, ll_sbi_flags_name, args);
1038 if (token == LL_SBI_NUM_MOUNT_OPT) {
1039 if (match_wildcard("context", s1) ||
1040 match_wildcard("fscontext", s1) ||
1041 match_wildcard("defcontext", s1) ||
1042 match_wildcard("rootcontext",s1))
1045 LCONSOLE_ERROR_MSG(0x152,
1046 "Unknown option '%s', won't mount.\n",
1053 case LL_SBI_32BIT_API:
1054 case LL_SBI_64BIT_HASH:
1055 case LL_SBI_ALWAYS_PING:
1056 set_bit(token, sbi->ll_flags);
1060 clear_bit(LL_SBI_LOCALFLOCK, sbi->ll_flags);
1062 clear_bit(LL_SBI_FLOCK, sbi->ll_flags);
1064 set_bit(token, sbi->ll_flags);
1067 case LL_SBI_LOCALFLOCK:
1068 clear_bit(LL_SBI_FLOCK, sbi->ll_flags);
1069 set_bit(token, sbi->ll_flags);
1072 case LL_SBI_CHECKSUM:
1073 sbi->ll_checksum_set = 1;
1075 case LL_SBI_USER_XATTR:
1076 case LL_SBI_USER_FID2PATH:
1077 case LL_SBI_LRU_RESIZE:
1078 case LL_SBI_LAZYSTATFS:
1079 case LL_SBI_VERBOSE:
1081 clear_bit(token, sbi->ll_flags);
1083 set_bit(token, sbi->ll_flags);
1085 case LL_SBI_TEST_DUMMY_ENCRYPTION: {
1086 #ifdef HAVE_LUSTRE_CRYPTO
1087 #ifdef HAVE_FSCRYPT_DUMMY_CONTEXT_ENABLED
1088 set_bit(token, sbi->ll_flags);
1090 struct lustre_sb_info *lsi = s2lsi(sb);
1092 err = llcrypt_set_test_dummy_encryption(sb, &args[0],
1093 &lsi->lsi_dummy_enc_ctx);
1099 "Can't change test_dummy_encryption");
1100 else if (err == -EINVAL)
1102 "Value of option \"%s\" unrecognized",
1106 "Error processing option \"%s\" [%d]",
1111 LCONSOLE_WARN("Test dummy encryption mount option ignored: encryption not supported\n");
1115 case LL_SBI_ENCRYPT:
1116 #ifdef HAVE_LUSTRE_CRYPTO
1118 clear_bit(token, sbi->ll_flags);
1120 set_bit(token, sbi->ll_flags);
1122 LCONSOLE_WARN("noencrypt or encrypt mount option ignored: encryption not supported\n");
1125 case LL_SBI_FOREIGN_SYMLINK:
1126 /* non-default prefix provided ? */
1131 /* path must be absolute */
1132 if (args->from[0] != '/') {
1133 LCONSOLE_ERROR_MSG(0x152,
1134 "foreign prefix '%s' must be an absolute path\n",
1139 old_len = sbi->ll_foreign_symlink_prefix_size;
1140 old = sbi->ll_foreign_symlink_prefix;
1141 /* alloc for path length and '\0' */
1142 sbi->ll_foreign_symlink_prefix = match_strdup(args);
1143 if (!sbi->ll_foreign_symlink_prefix) {
1144 /* restore previous */
1145 sbi->ll_foreign_symlink_prefix = old;
1146 sbi->ll_foreign_symlink_prefix_size =
1150 sbi->ll_foreign_symlink_prefix_size =
1151 args->to - args->from + 1;
1152 OBD_ALLOC_POST(sbi->ll_foreign_symlink_prefix,
1153 sbi->ll_foreign_symlink_prefix_size,
1156 OBD_FREE(old, old_len);
1158 /* enable foreign symlink support */
1159 set_bit(token, sbi->ll_flags);
1161 LCONSOLE_ERROR_MSG(0x152,
1162 "invalid %s option\n", s1);
1173 void ll_lli_init(struct ll_inode_info *lli)
1175 lli->lli_inode_magic = LLI_INODE_MAGIC;
1177 rwlock_init(&lli->lli_lock);
1178 lli->lli_posix_acl = NULL;
1179 /* Do not set lli_fid, it has been initialized already. */
1180 fid_zero(&lli->lli_pfid);
1181 lli->lli_mds_read_och = NULL;
1182 lli->lli_mds_write_och = NULL;
1183 lli->lli_mds_exec_och = NULL;
1184 lli->lli_open_fd_read_count = 0;
1185 lli->lli_open_fd_write_count = 0;
1186 lli->lli_open_fd_exec_count = 0;
1187 mutex_init(&lli->lli_och_mutex);
1188 spin_lock_init(&lli->lli_agl_lock);
1189 spin_lock_init(&lli->lli_layout_lock);
1190 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
1191 lli->lli_clob = NULL;
1193 init_rwsem(&lli->lli_xattrs_list_rwsem);
1194 mutex_init(&lli->lli_xattrs_enq_lock);
1196 LASSERT(lli->lli_vfs_inode.i_mode != 0);
1197 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
1198 lli->lli_opendir_key = NULL;
1199 lli->lli_sai = NULL;
1200 spin_lock_init(&lli->lli_sa_lock);
1201 lli->lli_opendir_pid = 0;
1202 lli->lli_sa_enabled = 0;
1203 init_rwsem(&lli->lli_lsm_sem);
1205 mutex_init(&lli->lli_size_mutex);
1206 mutex_init(&lli->lli_setattr_mutex);
1207 lli->lli_symlink_name = NULL;
1208 ll_trunc_sem_init(&lli->lli_trunc_sem);
1209 range_lock_tree_init(&lli->lli_write_tree);
1210 init_rwsem(&lli->lli_glimpse_sem);
1211 lli->lli_glimpse_time = ktime_set(0, 0);
1212 INIT_LIST_HEAD(&lli->lli_agl_list);
1213 lli->lli_agl_index = 0;
1214 lli->lli_async_rc = 0;
1215 spin_lock_init(&lli->lli_heat_lock);
1216 obd_heat_clear(lli->lli_heat_instances, OBD_HEAT_COUNT);
1217 lli->lli_heat_flags = 0;
1218 mutex_init(&lli->lli_pcc_lock);
1219 lli->lli_pcc_state = PCC_STATE_FL_NONE;
1220 lli->lli_pcc_inode = NULL;
1221 lli->lli_pcc_dsflags = PCC_DATASET_INVALID;
1222 lli->lli_pcc_generation = 0;
1223 mutex_init(&lli->lli_group_mutex);
1224 lli->lli_group_users = 0;
1225 lli->lli_group_gid = 0;
1227 mutex_init(&lli->lli_layout_mutex);
1228 memset(lli->lli_jobid, 0, sizeof(lli->lli_jobid));
1229 /* ll_cl_context initialize */
1230 INIT_LIST_HEAD(&lli->lli_lccs);
1233 #define MAX_STRING_SIZE 128
1235 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1236 #ifndef HAVE_BDI_CAP_MAP_COPY
1237 # define BDI_CAP_MAP_COPY 0
1240 static int super_setup_bdi_name(struct super_block *sb, char *fmt, ...)
1242 struct lustre_sb_info *lsi = s2lsi(sb);
1243 char buf[MAX_STRING_SIZE];
1247 err = bdi_init(&lsi->lsi_bdi);
1251 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1252 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1253 lsi->lsi_bdi.name = "lustre";
1254 va_start(args, fmt);
1255 vsnprintf(buf, MAX_STRING_SIZE, fmt, args);
1257 err = bdi_register(&lsi->lsi_bdi, NULL, "%s", buf);
1260 sb->s_bdi = &lsi->lsi_bdi;
1264 #endif /* !HAVE_SUPER_SETUP_BDI_NAME */
1266 int ll_fill_super(struct super_block *sb)
1268 struct lustre_profile *lprof = NULL;
1269 struct lustre_sb_info *lsi = s2lsi(sb);
1270 struct ll_sb_info *sbi = NULL;
1271 char *dt = NULL, *md = NULL;
1272 char *profilenm = get_profile_name(sb);
1273 struct config_llog_instance *cfg;
1274 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1275 const int instlen = LUSTRE_MAXINSTANCE + 2;
1276 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1277 char name[MAX_STRING_SIZE];
1286 /* for ASLR, to map between cfg_instance and hashed ptr */
1287 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1288 profilenm, cfg_instance, sb);
1290 OBD_RACE(OBD_FAIL_LLITE_RACE_MOUNT);
1294 GOTO(out_free_cfg, err = -ENOMEM);
1296 /* client additional sb info */
1297 lsi->lsi_llsbi = sbi = ll_init_sbi();
1299 GOTO(out_free_cfg, err = PTR_ERR(sbi));
1301 err = ll_options(lsi->lsi_lmd->lmd_opts, sb);
1303 GOTO(out_free_cfg, err);
1305 if (ll_sb_has_test_dummy_encryption(sb))
1306 /* enable filename encryption by default for dummy enc mode */
1307 lsi->lsi_flags |= LSI_FILENAME_ENC;
1309 /* filename encryption is disabled by default */
1310 lsi->lsi_flags &= ~LSI_FILENAME_ENC;
1312 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1313 sb->s_d_op = &ll_d_ops;
1316 generate_random_uuid(uuid.b);
1317 snprintf(sbi->ll_sb_uuid.uuid, sizeof(sbi->ll_sb_uuid), "%pU", uuid.b);
1319 CDEBUG(D_CONFIG, "llite sb uuid: %s\n", sbi->ll_sb_uuid.uuid);
1322 len = strlen(profilenm);
1323 ptr = strrchr(profilenm, '-');
1324 if (ptr && (strcmp(ptr, "-client") == 0))
1327 if (len > LUSTRE_MAXFSNAME) {
1328 if (unlikely(len >= MAX_STRING_SIZE))
1329 len = MAX_STRING_SIZE - 1;
1330 strncpy(name, profilenm, len);
1332 err = -ENAMETOOLONG;
1333 CERROR("%s: fsname longer than %u characters: rc = %d\n",
1334 name, LUSTRE_MAXFSNAME, err);
1335 GOTO(out_free_cfg, err);
1337 strncpy(sbi->ll_fsname, profilenm, len);
1338 sbi->ll_fsname[len] = '\0';
1341 snprintf(name, sizeof(name), "%.*s-%016lx", len,
1342 profilenm, cfg_instance);
1344 err = super_setup_bdi_name(sb, "%s", name);
1346 GOTO(out_free_cfg, err);
1348 /* disable kernel readahead */
1349 sb->s_bdi->ra_pages = 0;
1351 /* Call ll_debugfs_register_super() before lustre_process_log()
1352 * so that "llite.*.*" params can be processed correctly.
1354 err = ll_debugfs_register_super(sb, name);
1356 CERROR("%s: could not register mountpoint in llite: rc = %d\n",
1357 sbi->ll_fsname, err);
1361 /* The cfg_instance is a value unique to this super, in case some
1362 * joker tries to mount the same fs at two mount points.
1364 cfg->cfg_instance = cfg_instance;
1365 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1366 cfg->cfg_callback = class_config_llog_handler;
1367 cfg->cfg_sub_clds = CONFIG_SUB_CLIENT;
1368 /* set up client obds */
1369 err = lustre_process_log(sb, profilenm, cfg);
1371 GOTO(out_debugfs, err);
1373 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1374 lprof = class_get_profile(profilenm);
1375 if (lprof == NULL) {
1376 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1377 " read from the MGS. Does that filesystem "
1378 "exist?\n", profilenm);
1379 GOTO(out_debugfs, err = -EINVAL);
1381 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1382 lprof->lp_md, lprof->lp_dt);
1384 dt_len = strlen(lprof->lp_dt) + instlen + 2;
1385 OBD_ALLOC(dt, dt_len);
1387 GOTO(out_profile, err = -ENOMEM);
1388 snprintf(dt, dt_len - 1, "%s-%016lx", lprof->lp_dt, cfg_instance);
1390 md_len = strlen(lprof->lp_md) + instlen + 2;
1391 OBD_ALLOC(md, md_len);
1393 GOTO(out_free_dt, err = -ENOMEM);
1394 snprintf(md, md_len - 1, "%s-%016lx", lprof->lp_md, cfg_instance);
1396 /* connections, registrations, sb setup */
1397 err = client_common_fill_super(sb, md, dt);
1399 GOTO(out_free_md, err);
1401 sbi->ll_client_common_fill_super_succeeded = 1;
1405 OBD_FREE(md, md_len);
1408 OBD_FREE(dt, dt_len);
1411 class_put_profile(lprof);
1414 ll_debugfs_unregister_super(sb);
1421 else if (test_bit(LL_SBI_VERBOSE, sbi->ll_flags))
1422 LCONSOLE_WARN("Mounted %s\n", profilenm);
1424 } /* ll_fill_super */
1426 void ll_put_super(struct super_block *sb)
1428 struct config_llog_instance cfg, params_cfg;
1429 struct obd_device *obd;
1430 struct lustre_sb_info *lsi = s2lsi(sb);
1431 struct ll_sb_info *sbi = ll_s2sbi(sb);
1432 char *profilenm = get_profile_name(sb);
1433 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1435 int next, force = 1, rc = 0;
1439 GOTO(out_no_sbi, 0);
1441 /* Should replace instance_id with something better for ASLR */
1442 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1443 profilenm, cfg_instance, sb);
1445 cfg.cfg_instance = cfg_instance;
1446 lustre_end_log(sb, profilenm, &cfg);
1448 params_cfg.cfg_instance = cfg_instance;
1449 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1451 if (sbi->ll_md_exp) {
1452 obd = class_exp2obd(sbi->ll_md_exp);
1454 force = obd->obd_force;
1457 /* Wait for unstable pages to be committed to stable storage */
1459 rc = l_wait_event_abortable(
1460 sbi->ll_cache->ccc_unstable_waitq,
1461 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0);
1464 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1465 if (force == 0 && rc != -ERESTARTSYS)
1466 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1468 /* We need to set force before the lov_disconnect in
1469 * lustre_common_put_super, since l_d cleans up osc's as well.
1473 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1475 obd->obd_force = force;
1479 if (sbi->ll_client_common_fill_super_succeeded) {
1480 /* Only if client_common_fill_super succeeded */
1481 client_common_put_super(sb);
1485 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)))
1486 class_manual_cleanup(obd);
1488 if (test_bit(LL_SBI_VERBOSE, sbi->ll_flags))
1489 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1492 class_del_profile(profilenm);
1494 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1495 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1496 bdi_destroy(&lsi->lsi_bdi);
1497 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1501 llcrypt_free_dummy_context(&lsi->lsi_dummy_enc_ctx);
1503 lsi->lsi_llsbi = NULL;
1505 lustre_common_put_super(sb);
1507 cl_env_cache_purge(~0);
1510 } /* client_put_super */
1512 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1514 struct inode *inode = NULL;
1516 /* NOTE: we depend on atomic igrab() -bzzz */
1517 lock_res_and_lock(lock);
1518 if (lock->l_resource->lr_lvb_inode) {
1519 struct ll_inode_info * lli;
1520 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1521 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1522 inode = igrab(lock->l_resource->lr_lvb_inode);
1524 inode = lock->l_resource->lr_lvb_inode;
1525 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1526 D_WARNING, lock, "lr_lvb_inode %p is "
1527 "bogus: magic %08x",
1528 lock->l_resource->lr_lvb_inode,
1529 lli->lli_inode_magic);
1533 unlock_res_and_lock(lock);
1537 void ll_dir_clear_lsm_md(struct inode *inode)
1539 struct ll_inode_info *lli = ll_i2info(inode);
1541 LASSERT(S_ISDIR(inode->i_mode));
1543 if (lli->lli_lsm_md) {
1544 lmv_free_memmd(lli->lli_lsm_md);
1545 lli->lli_lsm_md = NULL;
1548 if (lli->lli_default_lsm_md) {
1549 lmv_free_memmd(lli->lli_default_lsm_md);
1550 lli->lli_default_lsm_md = NULL;
1554 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1555 const struct lu_fid *fid,
1556 struct lustre_md *md)
1558 struct ll_sb_info *sbi = ll_s2sbi(sb);
1559 struct ll_inode_info *lli;
1560 struct mdt_body *body = md->body;
1561 struct inode *inode;
1567 ino = cl_fid_build_ino(fid, test_bit(LL_SBI_32BIT_API, sbi->ll_flags));
1568 inode = iget_locked(sb, ino);
1569 if (inode == NULL) {
1570 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1571 sbi->ll_fsname, PFID(fid));
1572 RETURN(ERR_PTR(-ENOENT));
1575 lli = ll_i2info(inode);
1576 if (inode->i_state & I_NEW) {
1577 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1578 (body->mbo_mode & S_IFMT);
1579 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1582 inode->i_mtime.tv_sec = 0;
1583 inode->i_atime.tv_sec = 0;
1584 inode->i_ctime.tv_sec = 0;
1587 #ifdef HAVE_BACKING_DEV_INFO
1588 /* initializing backing dev info. */
1589 inode->i_mapping->backing_dev_info =
1590 &s2lsi(inode->i_sb)->lsi_bdi;
1592 inode->i_op = &ll_dir_inode_operations;
1593 inode->i_fop = &ll_dir_operations;
1594 lli->lli_fid = *fid;
1597 /* master object FID */
1598 lli->lli_pfid = body->mbo_fid1;
1599 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1600 lli, PFID(fid), PFID(&lli->lli_pfid));
1601 unlock_new_inode(inode);
1603 /* in directory restripe/auto-split, a directory will be
1604 * transformed to a stripe if it's plain, set its pfid here,
1605 * otherwise ll_lock_cancel_bits() can't find the master inode.
1607 lli->lli_pfid = body->mbo_fid1;
1613 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1616 struct lmv_stripe_md *lsm = md->lmv;
1617 struct ll_inode_info *lli = ll_i2info(inode);
1620 LASSERT(lsm != NULL);
1622 CDEBUG(D_INODE, "%s: "DFID" set dir layout:\n",
1623 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1624 lsm_md_dump(D_INODE, lsm);
1626 if (!lmv_dir_striped(lsm))
1629 /* XXX sigh, this lsm_root initialization should be in
1630 * LMV layer, but it needs ll_iget right now, so we
1631 * put this here right now. */
1632 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1633 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1634 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1636 if (!fid_is_sane(fid))
1639 /* Unfortunately ll_iget will call ll_update_inode,
1640 * where the initialization of slave inode is slightly
1641 * different, so it reset lsm_md to NULL to avoid
1642 * initializing lsm for slave inode. */
1643 lsm->lsm_md_oinfo[i].lmo_root =
1644 ll_iget_anon_dir(inode->i_sb, fid, md);
1645 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1646 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1648 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1650 iput(lsm->lsm_md_oinfo[i].lmo_root);
1651 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1657 lli->lli_lsm_md = lsm;
1662 static void ll_update_default_lsm_md(struct inode *inode, struct lustre_md *md)
1664 struct ll_inode_info *lli = ll_i2info(inode);
1668 if (!md->default_lmv) {
1669 /* clear default lsm */
1670 if (lli->lli_default_lsm_md) {
1671 down_write(&lli->lli_lsm_sem);
1672 if (lli->lli_default_lsm_md) {
1673 lmv_free_memmd(lli->lli_default_lsm_md);
1674 lli->lli_default_lsm_md = NULL;
1676 up_write(&lli->lli_lsm_sem);
1681 if (lli->lli_default_lsm_md) {
1682 /* do nonthing if default lsm isn't changed */
1683 down_read(&lli->lli_lsm_sem);
1684 if (lli->lli_default_lsm_md &&
1685 lsm_md_eq(lli->lli_default_lsm_md, md->default_lmv)) {
1686 up_read(&lli->lli_lsm_sem);
1689 up_read(&lli->lli_lsm_sem);
1692 down_write(&lli->lli_lsm_sem);
1693 if (lli->lli_default_lsm_md)
1694 lmv_free_memmd(lli->lli_default_lsm_md);
1695 lli->lli_default_lsm_md = md->default_lmv;
1696 lsm_md_dump(D_INODE, md->default_lmv);
1697 md->default_lmv = NULL;
1698 up_write(&lli->lli_lsm_sem);
1702 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1704 struct ll_inode_info *lli = ll_i2info(inode);
1705 struct lmv_stripe_md *lsm = md->lmv;
1706 struct cl_attr *attr;
1711 LASSERT(S_ISDIR(inode->i_mode));
1712 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1713 PFID(ll_inode2fid(inode)));
1715 /* update default LMV */
1716 if (md->default_lmv)
1717 ll_update_default_lsm_md(inode, md);
1719 /* after dir migration/restripe, a stripe may be turned into a
1720 * directory, in this case, zero out its lli_pfid.
1722 if (unlikely(fid_is_norm(&lli->lli_pfid)))
1723 fid_zero(&lli->lli_pfid);
1726 * no striped information from request, lustre_md from req does not
1727 * include stripeEA, see ll_md_setattr()
1733 * normally dir layout doesn't change, only take read lock to check
1734 * that to avoid blocking other MD operations.
1736 down_read(&lli->lli_lsm_sem);
1738 /* some current lookup initialized lsm, and unchanged */
1739 if (lli->lli_lsm_md && lsm_md_eq(lli->lli_lsm_md, lsm))
1740 GOTO(unlock, rc = 0);
1742 /* if dir layout doesn't match, check whether version is increased,
1743 * which means layout is changed, this happens in dir split/merge and
1746 * foreign LMV should not change.
1748 if (lli->lli_lsm_md && lmv_dir_striped(lli->lli_lsm_md) &&
1749 lsm->lsm_md_layout_version <=
1750 lli->lli_lsm_md->lsm_md_layout_version) {
1751 CERROR("%s: "DFID" dir layout mismatch:\n",
1752 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1753 lsm_md_dump(D_ERROR, lli->lli_lsm_md);
1754 lsm_md_dump(D_ERROR, lsm);
1755 GOTO(unlock, rc = -EINVAL);
1758 up_read(&lli->lli_lsm_sem);
1759 down_write(&lli->lli_lsm_sem);
1760 /* clear existing lsm */
1761 if (lli->lli_lsm_md) {
1762 lmv_free_memmd(lli->lli_lsm_md);
1763 lli->lli_lsm_md = NULL;
1766 rc = ll_init_lsm_md(inode, md);
1767 up_write(&lli->lli_lsm_sem);
1772 /* set md->lmv to NULL, so the following free lustre_md will not free
1777 /* md_merge_attr() may take long, since lsm is already set, switch to
1780 down_read(&lli->lli_lsm_sem);
1782 if (!lmv_dir_striped(lli->lli_lsm_md))
1783 GOTO(unlock, rc = 0);
1785 OBD_ALLOC_PTR(attr);
1787 GOTO(unlock, rc = -ENOMEM);
1789 /* validate the lsm */
1790 rc = md_merge_attr(ll_i2mdexp(inode), lli->lli_lsm_md, attr,
1791 ll_md_blocking_ast);
1793 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1794 md->body->mbo_nlink = attr->cat_nlink;
1795 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1796 md->body->mbo_size = attr->cat_size;
1797 if (md->body->mbo_valid & OBD_MD_FLATIME)
1798 md->body->mbo_atime = attr->cat_atime;
1799 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1800 md->body->mbo_ctime = attr->cat_ctime;
1801 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1802 md->body->mbo_mtime = attr->cat_mtime;
1808 up_read(&lli->lli_lsm_sem);
1813 void ll_clear_inode(struct inode *inode)
1815 struct ll_inode_info *lli = ll_i2info(inode);
1816 struct ll_sb_info *sbi = ll_i2sbi(inode);
1820 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1821 PFID(ll_inode2fid(inode)), inode);
1823 if (S_ISDIR(inode->i_mode)) {
1824 /* these should have been cleared in ll_file_release */
1825 LASSERT(lli->lli_opendir_key == NULL);
1826 LASSERT(lli->lli_sai == NULL);
1827 LASSERT(lli->lli_opendir_pid == 0);
1829 pcc_inode_free(inode);
1832 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1834 LASSERT(!lli->lli_open_fd_write_count);
1835 LASSERT(!lli->lli_open_fd_read_count);
1836 LASSERT(!lli->lli_open_fd_exec_count);
1838 if (lli->lli_mds_write_och)
1839 ll_md_real_close(inode, FMODE_WRITE);
1840 if (lli->lli_mds_exec_och)
1841 ll_md_real_close(inode, FMODE_EXEC);
1842 if (lli->lli_mds_read_och)
1843 ll_md_real_close(inode, FMODE_READ);
1845 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1846 OBD_FREE(lli->lli_symlink_name,
1847 strlen(lli->lli_symlink_name) + 1);
1848 lli->lli_symlink_name = NULL;
1851 ll_xattr_cache_destroy(inode);
1853 forget_all_cached_acls(inode);
1855 lli->lli_inode_magic = LLI_INODE_DEAD;
1857 if (S_ISDIR(inode->i_mode))
1858 ll_dir_clear_lsm_md(inode);
1859 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1860 LASSERT(list_empty(&lli->lli_agl_list));
1863 * XXX This has to be done before lsm is freed below, because
1864 * cl_object still uses inode lsm.
1866 cl_inode_fini(inode);
1868 llcrypt_put_encryption_info(inode);
1873 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1875 struct lustre_md md;
1876 struct inode *inode = dentry->d_inode;
1877 struct ll_sb_info *sbi = ll_i2sbi(inode);
1878 struct ptlrpc_request *request = NULL;
1883 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1884 LUSTRE_OPC_ANY, NULL);
1885 if (IS_ERR(op_data))
1886 RETURN(PTR_ERR(op_data));
1888 /* If this is a chgrp of a regular file, we want to reserve enough
1889 * quota to cover the entire file size.
1891 if (S_ISREG(inode->i_mode) && op_data->op_attr.ia_valid & ATTR_GID &&
1892 from_kgid(&init_user_ns, op_data->op_attr.ia_gid) !=
1893 from_kgid(&init_user_ns, inode->i_gid)) {
1894 op_data->op_xvalid |= OP_XVALID_BLOCKS;
1895 op_data->op_attr_blocks = inode->i_blocks;
1899 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1901 ptlrpc_req_finished(request);
1902 if (rc == -ENOENT) {
1904 /* Unlinked special device node? Or just a race?
1905 * Pretend we done everything. */
1906 if (!S_ISREG(inode->i_mode) &&
1907 !S_ISDIR(inode->i_mode)) {
1908 ia_valid = op_data->op_attr.ia_valid;
1909 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1910 rc = simple_setattr(&init_user_ns, dentry,
1912 op_data->op_attr.ia_valid = ia_valid;
1914 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1915 CERROR("md_setattr fails: rc = %d\n", rc);
1920 rc = md_get_lustre_md(sbi->ll_md_exp, &request->rq_pill, sbi->ll_dt_exp,
1921 sbi->ll_md_exp, &md);
1923 ptlrpc_req_finished(request);
1927 ia_valid = op_data->op_attr.ia_valid;
1928 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1929 * cache is not cleared yet. */
1930 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1931 if (S_ISREG(inode->i_mode))
1933 rc = simple_setattr(&init_user_ns, dentry, &op_data->op_attr);
1934 if (S_ISREG(inode->i_mode))
1935 inode_unlock(inode);
1936 op_data->op_attr.ia_valid = ia_valid;
1938 rc = ll_update_inode(inode, &md);
1939 ptlrpc_req_finished(request);
1945 * Zero portion of page that is part of @inode.
1946 * This implies, if necessary:
1947 * - taking cl_lock on range corresponding to concerned page
1948 * - grabbing vm page
1949 * - associating cl_page
1950 * - proceeding to clio read
1951 * - zeroing range in page
1952 * - proceeding to cl_page flush
1953 * - releasing cl_lock
1955 * \param[in] inode inode
1956 * \param[in] index page index
1957 * \param[in] offset offset in page to start zero from
1958 * \param[in] len len to zero
1960 * \retval 0 on success
1961 * \retval negative errno on failure
1963 int ll_io_zero_page(struct inode *inode, pgoff_t index, pgoff_t offset,
1966 struct ll_inode_info *lli = ll_i2info(inode);
1967 struct cl_object *clob = lli->lli_clob;
1969 struct lu_env *env = NULL;
1970 struct cl_io *io = NULL;
1971 struct cl_page *clpage = NULL;
1972 struct page *vmpage = NULL;
1973 unsigned from = index << PAGE_SHIFT;
1974 struct cl_lock *lock = NULL;
1975 struct cl_lock_descr *descr = NULL;
1976 struct cl_2queue *queue = NULL;
1977 struct cl_sync_io *anchor = NULL;
1978 bool holdinglock = false;
1983 env = cl_env_get(&refcheck);
1985 RETURN(PTR_ERR(env));
1987 io = vvp_env_thread_io(env);
1989 rc = cl_io_rw_init(env, io, CIT_WRITE, from, PAGE_SIZE);
1993 lock = vvp_env_lock(env);
1994 descr = &lock->cll_descr;
1995 descr->cld_obj = io->ci_obj;
1996 descr->cld_start = cl_index(io->ci_obj, from);
1997 descr->cld_end = cl_index(io->ci_obj, from + PAGE_SIZE - 1);
1998 descr->cld_mode = CLM_WRITE;
1999 descr->cld_enq_flags = CEF_MUST | CEF_NONBLOCK;
2001 /* request lock for page */
2002 rc = cl_lock_request(env, io, lock);
2003 /* -ECANCELED indicates a matching lock with a different extent
2004 * was already present, and -EEXIST indicates a matching lock
2005 * on exactly the same extent was already present.
2006 * In both cases it means we are covered.
2008 if (rc == -ECANCELED || rc == -EEXIST)
2016 vmpage = grab_cache_page_nowait(inode->i_mapping, index);
2018 GOTO(rellock, rc = -EOPNOTSUPP);
2020 if (!PageDirty(vmpage)) {
2021 /* associate cl_page */
2022 clpage = cl_page_find(env, clob, vmpage->index,
2023 vmpage, CPT_CACHEABLE);
2025 GOTO(pagefini, rc = PTR_ERR(clpage));
2027 cl_page_assume(env, io, clpage);
2030 if (!PageUptodate(vmpage) && !PageDirty(vmpage) &&
2031 !PageWriteback(vmpage)) {
2033 /* Set PagePrivate2 to detect special case of empty page
2034 * in osc_brw_fini_request().
2035 * It is also used to tell ll_io_read_page() that we do not
2036 * want the vmpage to be unlocked.
2038 SetPagePrivate2(vmpage);
2039 rc = ll_io_read_page(env, io, clpage, NULL);
2040 if (!PagePrivate2(vmpage)) {
2041 /* PagePrivate2 was cleared in osc_brw_fini_request()
2042 * meaning we read an empty page. In this case, in order
2043 * to avoid allocating unnecessary block in truncated
2044 * file, we must not zero and write as below. Subsequent
2045 * server-side truncate will handle things correctly.
2047 cl_page_unassume(env, io, clpage);
2048 GOTO(clpfini, rc = 0);
2050 ClearPagePrivate2(vmpage);
2055 /* Thanks to PagePrivate2 flag, ll_io_read_page() did not unlock
2056 * the vmpage, so we are good to proceed and zero range in page.
2058 zero_user(vmpage, offset, len);
2060 if (holdinglock && clpage) {
2061 /* explicitly write newly modified page */
2062 queue = &io->ci_queue;
2063 cl_2queue_init(queue);
2064 anchor = &vvp_env_info(env)->vti_anchor;
2065 cl_sync_io_init(anchor, 1);
2066 clpage->cp_sync_io = anchor;
2067 cl_2queue_add(queue, clpage, true);
2068 rc = cl_io_submit_rw(env, io, CRT_WRITE, queue);
2070 GOTO(queuefini1, rc);
2071 rc = cl_sync_io_wait(env, anchor, 0);
2073 GOTO(queuefini2, rc);
2074 cl_page_assume(env, io, clpage);
2077 cl_2queue_discard(env, io, queue);
2079 cl_2queue_disown(env, io, queue);
2080 cl_2queue_fini(env, queue);
2085 cl_page_put(env, clpage);
2087 unlock_page(vmpage);
2091 cl_lock_release(env, lock);
2093 cl_io_fini(env, io);
2096 cl_env_put(env, &refcheck);
2102 * Get reference file from volatile file name.
2103 * Volatile file name may look like:
2104 * <parent>/LUSTRE_VOLATILE_HDR:<mdt_index>:<random>:fd=<fd>
2105 * where fd is opened descriptor of reference file.
2107 * \param[in] volatile_name volatile file name
2108 * \param[in] volatile_len volatile file name length
2109 * \param[out] ref_file pointer to struct file of reference file
2111 * \retval 0 on success
2112 * \retval negative errno on failure
2114 int volatile_ref_file(const char *volatile_name, int volatile_len,
2115 struct file **ref_file)
2117 char *p, *q, *fd_str;
2120 p = strnstr(volatile_name, ":fd=", volatile_len);
2121 if (!p || strlen(p + 4) == 0)
2124 q = strchrnul(p + 4, ':');
2125 fd_str = kstrndup(p + 4, q - p - 4, GFP_NOFS);
2128 rc = kstrtouint(fd_str, 10, &fd);
2133 *ref_file = fget(fd);
2139 /* If this inode has objects allocated to it (lsm != NULL), then the OST
2140 * object(s) determine the file size and mtime. Otherwise, the MDS will
2141 * keep these values until such a time that objects are allocated for it.
2142 * We do the MDS operations first, as it is checking permissions for us.
2143 * We don't to the MDS RPC if there is nothing that we want to store there,
2144 * otherwise there is no harm in updating mtime/atime on the MDS if we are
2145 * going to do an RPC anyways.
2147 * If we are doing a truncate, we will send the mtime and ctime updates
2148 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
2149 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
2152 * In case of HSMimport, we only set attr on MDS.
2154 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr,
2155 enum op_xvalid xvalid, bool hsm_import)
2157 struct inode *inode = dentry->d_inode;
2158 struct ll_inode_info *lli = ll_i2info(inode);
2159 struct md_op_data *op_data = NULL;
2160 ktime_t kstart = ktime_get();
2165 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
2166 "valid %x, hsm_import %d\n",
2167 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid),
2168 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
2171 if (attr->ia_valid & ATTR_SIZE) {
2172 /* Check new size against VFS/VM file size limit and rlimit */
2173 rc = inode_newsize_ok(inode, attr->ia_size);
2177 /* The maximum Lustre file size is variable, based on the
2178 * OST maximum object size and number of stripes. This
2179 * needs another check in addition to the VFS check above. */
2180 if (attr->ia_size > ll_file_maxbytes(inode)) {
2181 CDEBUG(D_INODE,"file "DFID" too large %llu > %llu\n",
2182 PFID(&lli->lli_fid), attr->ia_size,
2183 ll_file_maxbytes(inode));
2187 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
2190 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
2191 if (attr->ia_valid & TIMES_SET_FLAGS) {
2192 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
2193 !capable(CAP_FOWNER))
2197 /* We mark all of the fields "set" so MDS/OST does not re-set them */
2198 if (!(xvalid & OP_XVALID_CTIME_SET) &&
2199 (attr->ia_valid & ATTR_CTIME)) {
2200 attr->ia_ctime = current_time(inode);
2201 xvalid |= OP_XVALID_CTIME_SET;
2203 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
2204 (attr->ia_valid & ATTR_ATIME)) {
2205 attr->ia_atime = current_time(inode);
2206 attr->ia_valid |= ATTR_ATIME_SET;
2208 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
2209 (attr->ia_valid & ATTR_MTIME)) {
2210 attr->ia_mtime = current_time(inode);
2211 attr->ia_valid |= ATTR_MTIME_SET;
2214 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
2215 CDEBUG(D_INODE, "setting mtime %lld, ctime %lld, now = %lld\n",
2216 (s64)attr->ia_mtime.tv_sec, (s64)attr->ia_ctime.tv_sec,
2217 ktime_get_real_seconds());
2219 if (S_ISREG(inode->i_mode))
2220 inode_unlock(inode);
2222 /* We always do an MDS RPC, even if we're only changing the size;
2223 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
2225 OBD_ALLOC_PTR(op_data);
2226 if (op_data == NULL)
2227 GOTO(out, rc = -ENOMEM);
2229 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
2230 /* If we are changing file size, file content is
2231 * modified, flag it.
2233 xvalid |= OP_XVALID_OWNEROVERRIDE;
2234 op_data->op_bias |= MDS_DATA_MODIFIED;
2235 clear_bit(LLIF_DATA_MODIFIED, &lli->lli_flags);
2238 if (attr->ia_valid & ATTR_FILE) {
2239 struct ll_file_data *fd = attr->ia_file->private_data;
2241 if (fd->fd_lease_och)
2242 op_data->op_bias |= MDS_TRUNC_KEEP_LEASE;
2245 op_data->op_attr = *attr;
2246 op_data->op_xvalid = xvalid;
2248 rc = ll_md_setattr(dentry, op_data);
2252 if (!S_ISREG(inode->i_mode) || hsm_import)
2255 if (attr->ia_valid & (ATTR_SIZE | ATTR_ATIME | ATTR_ATIME_SET |
2256 ATTR_MTIME | ATTR_MTIME_SET | ATTR_CTIME) ||
2257 xvalid & OP_XVALID_CTIME_SET) {
2258 bool cached = false;
2260 rc = pcc_inode_setattr(inode, attr, &cached);
2263 CERROR("%s: PCC inode "DFID" setattr failed: "
2265 ll_i2sbi(inode)->ll_fsname,
2266 PFID(&lli->lli_fid), rc);
2270 unsigned int flags = 0;
2272 /* For truncate and utimes sending attributes to OSTs,
2273 * setting mtime/atime to the past will be performed
2274 * under PW [0:EOF] extent lock (new_size:EOF for
2275 * truncate). It may seem excessive to send mtime/atime
2276 * updates to OSTs when not setting times to past, but
2277 * it is necessary due to possible time
2278 * de-synchronization between MDT inode and OST objects
2280 if (S_ISREG(inode->i_mode) && IS_ENCRYPTED(inode)) {
2281 xvalid |= OP_XVALID_FLAGS;
2282 flags = LUSTRE_ENCRYPT_FL;
2283 /* Call to ll_io_zero_page is not necessary if
2284 * truncating on PAGE_SIZE boundary, because
2285 * whole pages will be wiped.
2286 * In case of Direct IO, all we need is to set
2289 if (attr->ia_valid & ATTR_SIZE &&
2290 attr->ia_size & ~PAGE_MASK &&
2291 !(attr->ia_valid & ATTR_FILE &&
2292 attr->ia_file->f_flags & O_DIRECT)) {
2294 attr->ia_size & (PAGE_SIZE - 1);
2296 rc = ll_io_zero_page(inode,
2297 attr->ia_size >> PAGE_SHIFT,
2298 offset, PAGE_SIZE - offset);
2302 /* If encrypted volatile file without the key,
2303 * we need to fetch size from reference file,
2304 * and set it on OST objects. This happens when
2305 * migrating or extending an encrypted file
2308 if (filename_is_volatile(dentry->d_name.name,
2311 llcrypt_require_key(inode) == -ENOKEY) {
2312 struct file *ref_file;
2313 struct inode *ref_inode;
2314 struct ll_inode_info *ref_lli;
2315 struct cl_object *ref_obj;
2316 struct cl_attr ref_attr = { 0 };
2320 rc = volatile_ref_file(
2321 dentry->d_name.name,
2327 ref_inode = file_inode(ref_file);
2330 GOTO(out, rc = -EINVAL);
2333 env = cl_env_get(&refcheck);
2335 GOTO(out, rc = PTR_ERR(env));
2337 ref_lli = ll_i2info(ref_inode);
2338 ref_obj = ref_lli->lli_clob;
2339 cl_object_attr_lock(ref_obj);
2340 rc = cl_object_attr_get(env, ref_obj,
2342 cl_object_attr_unlock(ref_obj);
2343 cl_env_put(env, &refcheck);
2348 attr->ia_valid |= ATTR_SIZE;
2349 attr->ia_size = ref_attr.cat_size;
2352 rc = cl_setattr_ost(lli->lli_clob, attr, xvalid, flags);
2356 /* If the file was restored, it needs to set dirty flag.
2358 * We've already sent MDS_DATA_MODIFIED flag in
2359 * ll_md_setattr() for truncate. However, the MDT refuses to
2360 * set the HS_DIRTY flag on released files, so we have to set
2361 * it again if the file has been restored. Please check how
2362 * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
2364 * Please notice that if the file is not released, the previous
2365 * MDS_DATA_MODIFIED has taken effect and usually
2366 * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
2367 * This way we can save an RPC for common open + trunc
2369 if (test_and_clear_bit(LLIF_DATA_MODIFIED, &lli->lli_flags)) {
2370 struct hsm_state_set hss = {
2371 .hss_valid = HSS_SETMASK,
2372 .hss_setmask = HS_DIRTY,
2376 rc2 = ll_hsm_state_set(inode, &hss);
2377 /* truncate and write can happen at the same time, so that
2378 * the file can be set modified even though the file is not
2379 * restored from released state, and ll_hsm_state_set() is
2380 * not applicable for the file, and rc2 < 0 is normal in this
2383 CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
2384 PFID(ll_inode2fid(inode)), rc2);
2389 if (op_data != NULL)
2390 ll_finish_md_op_data(op_data);
2392 if (S_ISREG(inode->i_mode)) {
2394 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
2395 inode_dio_wait(inode);
2396 /* Once we've got the i_mutex, it's safe to set the S_NOSEC
2397 * flag. ll_update_inode (called from ll_md_setattr), clears
2398 * inode flags, so there is a gap where S_NOSEC is not set.
2399 * This can cause a writer to take the i_mutex unnecessarily,
2400 * but this is safe to do and should be rare. */
2401 inode_has_no_xattr(inode);
2405 ll_stats_ops_tally(ll_i2sbi(inode), attr->ia_valid & ATTR_SIZE ?
2406 LPROC_LL_TRUNC : LPROC_LL_SETATTR,
2407 ktime_us_delta(ktime_get(), kstart));
2412 int ll_setattr(struct user_namespace *mnt_userns, struct dentry *de,
2415 int mode = de->d_inode->i_mode;
2416 enum op_xvalid xvalid = 0;
2419 rc = llcrypt_prepare_setattr(de, attr);
2423 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
2424 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
2425 xvalid |= OP_XVALID_OWNEROVERRIDE;
2427 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
2428 (ATTR_SIZE|ATTR_MODE)) &&
2429 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
2430 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
2431 !(attr->ia_mode & S_ISGID))))
2432 attr->ia_valid |= ATTR_FORCE;
2434 if ((attr->ia_valid & ATTR_MODE) &&
2436 !(attr->ia_mode & S_ISUID) &&
2437 !(attr->ia_valid & ATTR_KILL_SUID))
2438 attr->ia_valid |= ATTR_KILL_SUID;
2440 if ((attr->ia_valid & ATTR_MODE) &&
2441 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
2442 !(attr->ia_mode & S_ISGID) &&
2443 !(attr->ia_valid & ATTR_KILL_SGID))
2444 attr->ia_valid |= ATTR_KILL_SGID;
2446 return ll_setattr_raw(de, attr, xvalid, false);
2449 int ll_statfs_internal(struct ll_sb_info *sbi, struct obd_statfs *osfs,
2452 struct obd_statfs obd_osfs = { 0 };
2457 max_age = ktime_get_seconds() - sbi->ll_statfs_max_age;
2459 if (test_bit(LL_SBI_LAZYSTATFS, sbi->ll_flags))
2460 flags |= OBD_STATFS_NODELAY;
2462 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
2466 osfs->os_type = LL_SUPER_MAGIC;
2468 CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
2469 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree, osfs->os_files);
2471 if (osfs->os_state & OS_STATFS_SUM)
2474 rc = obd_statfs(NULL, sbi->ll_dt_exp, &obd_osfs, max_age, flags);
2475 if (rc) /* Possibly a filesystem with no OSTs. Report MDT totals. */
2478 CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
2479 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
2482 osfs->os_bsize = obd_osfs.os_bsize;
2483 osfs->os_blocks = obd_osfs.os_blocks;
2484 osfs->os_bfree = obd_osfs.os_bfree;
2485 osfs->os_bavail = obd_osfs.os_bavail;
2487 /* If we have _some_ OSTs, but don't have as many free objects on the
2488 * OSTs as inodes on the MDTs, reduce the reported number of inodes
2489 * to compensate, so that the "inodes in use" number is correct.
2490 * This should be kept in sync with lod_statfs() behaviour.
2492 if (obd_osfs.os_files && obd_osfs.os_ffree < osfs->os_ffree) {
2493 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
2495 osfs->os_ffree = obd_osfs.os_ffree;
2502 static int ll_statfs_project(struct inode *inode, struct kstatfs *sfs)
2504 struct if_quotactl qctl = {
2505 .qc_cmd = LUSTRE_Q_GETQUOTA,
2506 .qc_type = PRJQUOTA,
2507 .qc_valid = QC_GENERAL,
2509 u64 limit, curblock;
2512 qctl.qc_id = ll_i2info(inode)->lli_projid;
2513 ret = quotactl_ioctl(inode->i_sb, &qctl);
2515 /* ignore errors if project ID does not have
2516 * a quota limit or feature unsupported.
2518 if (ret == -ESRCH || ret == -EOPNOTSUPP)
2523 limit = ((qctl.qc_dqblk.dqb_bsoftlimit ?
2524 qctl.qc_dqblk.dqb_bsoftlimit :
2525 qctl.qc_dqblk.dqb_bhardlimit) * 1024) / sfs->f_bsize;
2526 if (limit && sfs->f_blocks > limit) {
2527 curblock = (qctl.qc_dqblk.dqb_curspace +
2528 sfs->f_bsize - 1) / sfs->f_bsize;
2529 sfs->f_blocks = limit;
2530 sfs->f_bfree = sfs->f_bavail =
2531 (sfs->f_blocks > curblock) ?
2532 (sfs->f_blocks - curblock) : 0;
2535 limit = qctl.qc_dqblk.dqb_isoftlimit ?
2536 qctl.qc_dqblk.dqb_isoftlimit :
2537 qctl.qc_dqblk.dqb_ihardlimit;
2538 if (limit && sfs->f_files > limit) {
2539 sfs->f_files = limit;
2540 sfs->f_ffree = (sfs->f_files >
2541 qctl.qc_dqblk.dqb_curinodes) ?
2542 (sfs->f_files - qctl.qc_dqblk.dqb_curinodes) : 0;
2548 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
2550 struct super_block *sb = de->d_sb;
2551 struct obd_statfs osfs;
2552 __u64 fsid = huge_encode_dev(sb->s_dev);
2553 ktime_t kstart = ktime_get();
2556 CDEBUG(D_VFSTRACE, "VFS Op:sb=%s (%p)\n", sb->s_id, sb);
2558 /* Some amount of caching on the client is allowed */
2559 rc = ll_statfs_internal(ll_s2sbi(sb), &osfs, OBD_STATFS_SUM);
2563 statfs_unpack(sfs, &osfs);
2565 /* We need to downshift for all 32-bit kernels, because we can't
2566 * tell if the kernel is being called via sys_statfs64() or not.
2567 * Stop before overflowing f_bsize - in which case it is better
2568 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
2569 if (sizeof(long) < 8) {
2570 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
2573 osfs.os_blocks >>= 1;
2574 osfs.os_bfree >>= 1;
2575 osfs.os_bavail >>= 1;
2579 sfs->f_blocks = osfs.os_blocks;
2580 sfs->f_bfree = osfs.os_bfree;
2581 sfs->f_bavail = osfs.os_bavail;
2582 sfs->f_fsid.val[0] = (__u32)fsid;
2583 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
2584 if (ll_i2info(de->d_inode)->lli_projid)
2585 return ll_statfs_project(de->d_inode, sfs);
2587 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STATFS,
2588 ktime_us_delta(ktime_get(), kstart));
2593 void ll_inode_size_lock(struct inode *inode)
2595 struct ll_inode_info *lli;
2597 LASSERT(!S_ISDIR(inode->i_mode));
2599 lli = ll_i2info(inode);
2600 mutex_lock(&lli->lli_size_mutex);
2603 void ll_inode_size_unlock(struct inode *inode)
2605 struct ll_inode_info *lli;
2607 lli = ll_i2info(inode);
2608 mutex_unlock(&lli->lli_size_mutex);
2611 void ll_update_inode_flags(struct inode *inode, unsigned int ext_flags)
2613 /* do not clear encryption flag */
2614 ext_flags |= ll_inode_to_ext_flags(inode->i_flags) & LUSTRE_ENCRYPT_FL;
2615 inode->i_flags = ll_ext_to_inode_flags(ext_flags);
2616 if (ext_flags & LUSTRE_PROJINHERIT_FL)
2617 set_bit(LLIF_PROJECT_INHERIT, &ll_i2info(inode)->lli_flags);
2619 clear_bit(LLIF_PROJECT_INHERIT, &ll_i2info(inode)->lli_flags);
2622 int ll_update_inode(struct inode *inode, struct lustre_md *md)
2624 struct ll_inode_info *lli = ll_i2info(inode);
2625 struct mdt_body *body = md->body;
2626 struct ll_sb_info *sbi = ll_i2sbi(inode);
2630 if (body->mbo_valid & OBD_MD_FLEASIZE) {
2631 rc = cl_file_inode_init(inode, md);
2636 if (S_ISDIR(inode->i_mode)) {
2637 rc = ll_update_lsm_md(inode, md);
2642 if (body->mbo_valid & OBD_MD_FLACL)
2643 lli_replace_acl(lli, md);
2645 api32 = test_bit(LL_SBI_32BIT_API, sbi->ll_flags);
2646 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1, api32);
2647 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
2649 if (body->mbo_valid & OBD_MD_FLATIME) {
2650 if (body->mbo_atime > inode->i_atime.tv_sec)
2651 inode->i_atime.tv_sec = body->mbo_atime;
2652 lli->lli_atime = body->mbo_atime;
2655 if (body->mbo_valid & OBD_MD_FLMTIME) {
2656 if (body->mbo_mtime > inode->i_mtime.tv_sec) {
2658 "setting ino %lu mtime from %lld to %llu\n",
2659 inode->i_ino, (s64)inode->i_mtime.tv_sec,
2661 inode->i_mtime.tv_sec = body->mbo_mtime;
2663 lli->lli_mtime = body->mbo_mtime;
2666 if (body->mbo_valid & OBD_MD_FLCTIME) {
2667 if (body->mbo_ctime > inode->i_ctime.tv_sec)
2668 inode->i_ctime.tv_sec = body->mbo_ctime;
2669 lli->lli_ctime = body->mbo_ctime;
2672 if (body->mbo_valid & OBD_MD_FLBTIME)
2673 lli->lli_btime = body->mbo_btime;
2675 /* Clear i_flags to remove S_NOSEC before permissions are updated */
2676 if (body->mbo_valid & OBD_MD_FLFLAGS)
2677 ll_update_inode_flags(inode, body->mbo_flags);
2678 if (body->mbo_valid & OBD_MD_FLMODE)
2679 inode->i_mode = (inode->i_mode & S_IFMT) |
2680 (body->mbo_mode & ~S_IFMT);
2682 if (body->mbo_valid & OBD_MD_FLTYPE)
2683 inode->i_mode = (inode->i_mode & ~S_IFMT) |
2684 (body->mbo_mode & S_IFMT);
2686 LASSERT(inode->i_mode != 0);
2687 if (body->mbo_valid & OBD_MD_FLUID)
2688 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
2689 if (body->mbo_valid & OBD_MD_FLGID)
2690 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
2691 if (body->mbo_valid & OBD_MD_FLPROJID)
2692 lli->lli_projid = body->mbo_projid;
2693 if (body->mbo_valid & OBD_MD_FLNLINK) {
2694 spin_lock(&inode->i_lock);
2695 set_nlink(inode, body->mbo_nlink);
2696 spin_unlock(&inode->i_lock);
2698 if (body->mbo_valid & OBD_MD_FLRDEV)
2699 inode->i_rdev = old_decode_dev(body->mbo_rdev);
2701 if (body->mbo_valid & OBD_MD_FLID) {
2702 /* FID shouldn't be changed! */
2703 if (fid_is_sane(&lli->lli_fid)) {
2704 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
2705 "Trying to change FID "DFID
2706 " to the "DFID", inode "DFID"(%p)\n",
2707 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
2708 PFID(ll_inode2fid(inode)), inode);
2710 lli->lli_fid = body->mbo_fid1;
2714 LASSERT(fid_seq(&lli->lli_fid) != 0);
2716 /* In case of encrypted file without the key, please do not lose
2717 * clear text size stored into lli_lazysize in ll_merge_attr(),
2718 * we will need it in ll_prepare_close().
2720 if (lli->lli_attr_valid & OBD_MD_FLLAZYSIZE && lli->lli_lazysize &&
2721 llcrypt_require_key(inode) == -ENOKEY)
2722 lli->lli_attr_valid = body->mbo_valid | OBD_MD_FLLAZYSIZE;
2724 lli->lli_attr_valid = body->mbo_valid;
2725 if (body->mbo_valid & OBD_MD_FLSIZE) {
2726 i_size_write(inode, body->mbo_size);
2728 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
2729 PFID(ll_inode2fid(inode)),
2730 (unsigned long long)body->mbo_size);
2732 if (body->mbo_valid & OBD_MD_FLBLOCKS)
2733 inode->i_blocks = body->mbo_blocks;
2735 if (body->mbo_valid & OBD_MD_FLLAZYSIZE)
2736 lli->lli_lazysize = body->mbo_size;
2737 if (body->mbo_valid & OBD_MD_FLLAZYBLOCKS)
2738 lli->lli_lazyblocks = body->mbo_blocks;
2741 if (body->mbo_valid & OBD_MD_TSTATE) {
2742 /* Set LLIF_FILE_RESTORING if restore ongoing and
2743 * clear it when done to ensure to start again
2744 * glimpsing updated attrs
2746 if (body->mbo_t_state & MS_RESTORE)
2747 set_bit(LLIF_FILE_RESTORING, &lli->lli_flags);
2749 clear_bit(LLIF_FILE_RESTORING, &lli->lli_flags);
2755 /* update directory depth to ROOT, called after LOOKUP lock is fetched. */
2756 void ll_update_dir_depth(struct inode *dir, struct inode *inode)
2758 struct ll_inode_info *lli;
2760 if (!S_ISDIR(inode->i_mode))
2766 lli = ll_i2info(inode);
2767 lli->lli_dir_depth = ll_i2info(dir)->lli_dir_depth + 1;
2768 CDEBUG(D_INODE, DFID" depth %hu\n",
2769 PFID(&lli->lli_fid), lli->lli_dir_depth);
2772 void ll_truncate_inode_pages_final(struct inode *inode)
2774 struct address_space *mapping = &inode->i_data;
2775 unsigned long nrpages;
2776 unsigned long flags;
2778 truncate_inode_pages_final(mapping);
2780 /* Workaround for LU-118: Note nrpages may not be totally updated when
2781 * truncate_inode_pages() returns, as there can be a page in the process
2782 * of deletion (inside __delete_from_page_cache()) in the specified
2783 * range. Thus mapping->nrpages can be non-zero when this function
2784 * returns even after truncation of the whole mapping. Only do this if
2785 * npages isn't already zero.
2787 nrpages = mapping->nrpages;
2789 ll_xa_lock_irqsave(&mapping->i_pages, flags);
2790 nrpages = mapping->nrpages;
2791 ll_xa_unlock_irqrestore(&mapping->i_pages, flags);
2792 } /* Workaround end */
2794 LASSERTF(nrpages == 0, "%s: inode="DFID"(%p) nrpages=%lu, "
2795 "see https://jira.whamcloud.com/browse/LU-118\n",
2796 ll_i2sbi(inode)->ll_fsname,
2797 PFID(ll_inode2fid(inode)), inode, nrpages);
2800 int ll_read_inode2(struct inode *inode, void *opaque)
2802 struct lustre_md *md = opaque;
2803 struct ll_inode_info *lli = ll_i2info(inode);
2807 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2808 PFID(&lli->lli_fid), inode);
2810 /* Core attributes from the MDS first. This is a new inode, and
2811 * the VFS doesn't zero times in the core inode so we have to do
2812 * it ourselves. They will be overwritten by either MDS or OST
2813 * attributes - we just need to make sure they aren't newer.
2815 inode->i_mtime.tv_sec = 0;
2816 inode->i_atime.tv_sec = 0;
2817 inode->i_ctime.tv_sec = 0;
2819 rc = ll_update_inode(inode, md);
2823 /* OIDEBUG(inode); */
2825 #ifdef HAVE_BACKING_DEV_INFO
2826 /* initializing backing dev info. */
2827 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2829 if (S_ISREG(inode->i_mode)) {
2830 struct ll_sb_info *sbi = ll_i2sbi(inode);
2831 inode->i_op = &ll_file_inode_operations;
2832 inode->i_fop = sbi->ll_fop;
2833 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2835 } else if (S_ISDIR(inode->i_mode)) {
2836 inode->i_op = &ll_dir_inode_operations;
2837 inode->i_fop = &ll_dir_operations;
2839 } else if (S_ISLNK(inode->i_mode)) {
2840 inode->i_op = &ll_fast_symlink_inode_operations;
2843 inode->i_op = &ll_special_inode_operations;
2845 init_special_inode(inode, inode->i_mode,
2854 void ll_delete_inode(struct inode *inode)
2856 struct ll_inode_info *lli = ll_i2info(inode);
2859 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL) {
2860 /* It is last chance to write out dirty pages,
2861 * otherwise we may lose data while umount.
2863 * If i_nlink is 0 then just discard data. This is safe because
2864 * local inode gets i_nlink 0 from server only for the last
2865 * unlink, so that file is not opened somewhere else
2867 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, inode->i_nlink ?
2868 CL_FSYNC_LOCAL : CL_FSYNC_DISCARD, 1);
2871 ll_truncate_inode_pages_final(inode);
2872 ll_clear_inode(inode);
2878 int ll_iocontrol(struct inode *inode, struct file *file,
2879 unsigned int cmd, unsigned long arg)
2881 struct ll_sb_info *sbi = ll_i2sbi(inode);
2882 struct ptlrpc_request *req = NULL;
2887 case FS_IOC_GETFLAGS: {
2888 struct mdt_body *body;
2889 struct md_op_data *op_data;
2891 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2892 0, 0, LUSTRE_OPC_ANY,
2894 if (IS_ERR(op_data))
2895 RETURN(PTR_ERR(op_data));
2897 op_data->op_valid = OBD_MD_FLFLAGS;
2898 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2899 ll_finish_md_op_data(op_data);
2901 CERROR("%s: failure inode "DFID": rc = %d\n",
2902 sbi->ll_md_exp->exp_obd->obd_name,
2903 PFID(ll_inode2fid(inode)), rc);
2907 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2909 flags = body->mbo_flags;
2911 ptlrpc_req_finished(req);
2913 RETURN(put_user(flags, (int __user *)arg));
2915 case FS_IOC_SETFLAGS: {
2917 struct md_op_data *op_data;
2918 struct cl_object *obj;
2919 struct fsxattr fa = { 0 };
2921 if (get_user(flags, (int __user *)arg))
2924 fa.fsx_projid = ll_i2info(inode)->lli_projid;
2925 if (flags & LUSTRE_PROJINHERIT_FL)
2926 fa.fsx_xflags = FS_XFLAG_PROJINHERIT;
2928 rc = ll_ioctl_check_project(inode, fa.fsx_xflags,
2933 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2934 LUSTRE_OPC_ANY, NULL);
2935 if (IS_ERR(op_data))
2936 RETURN(PTR_ERR(op_data));
2938 op_data->op_attr_flags = flags;
2939 op_data->op_xvalid |= OP_XVALID_FLAGS;
2940 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2941 ll_finish_md_op_data(op_data);
2942 ptlrpc_req_finished(req);
2946 ll_update_inode_flags(inode, flags);
2948 obj = ll_i2info(inode)->lli_clob;
2952 OBD_ALLOC_PTR(attr);
2956 rc = cl_setattr_ost(obj, attr, OP_XVALID_FLAGS, flags);
2968 int ll_flush_ctx(struct inode *inode)
2970 struct ll_sb_info *sbi = ll_i2sbi(inode);
2972 CDEBUG(D_SEC, "flush context for user %d\n",
2973 from_kuid(&init_user_ns, current_uid()));
2975 obd_set_info_async(NULL, sbi->ll_md_exp,
2976 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2978 obd_set_info_async(NULL, sbi->ll_dt_exp,
2979 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2984 /* umount -f client means force down, don't save state */
2985 void ll_umount_begin(struct super_block *sb)
2987 struct ll_sb_info *sbi = ll_s2sbi(sb);
2988 struct obd_device *obd;
2989 struct obd_ioctl_data *ioc_data;
2993 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2994 sb->s_count, atomic_read(&sb->s_active));
2996 obd = class_exp2obd(sbi->ll_md_exp);
2998 CERROR("Invalid MDC connection handle %#llx\n",
2999 sbi->ll_md_exp->exp_handle.h_cookie);
3005 obd = class_exp2obd(sbi->ll_dt_exp);
3007 CERROR("Invalid LOV connection handle %#llx\n",
3008 sbi->ll_dt_exp->exp_handle.h_cookie);
3014 OBD_ALLOC_PTR(ioc_data);
3016 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
3017 sizeof *ioc_data, ioc_data, NULL);
3019 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
3020 sizeof *ioc_data, ioc_data, NULL);
3022 OBD_FREE_PTR(ioc_data);
3025 /* Really, we'd like to wait until there are no requests outstanding,
3026 * and then continue. For now, we just periodically checking for vfs
3027 * to decrement mnt_cnt and hope to finish it within 10sec.
3031 !may_umount(sbi->ll_mnt.mnt)) {
3039 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
3041 struct ll_sb_info *sbi = ll_s2sbi(sb);
3042 char *profilenm = get_profile_name(sb);
3046 if ((*flags & MS_RDONLY) != (sb->s_flags & SB_RDONLY)) {
3047 read_only = *flags & MS_RDONLY;
3048 err = obd_set_info_async(NULL, sbi->ll_md_exp,
3049 sizeof(KEY_READ_ONLY),
3050 KEY_READ_ONLY, sizeof(read_only),
3053 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
3054 profilenm, read_only ?
3055 "read-only" : "read-write", err);
3060 sb->s_flags |= SB_RDONLY;
3062 sb->s_flags &= ~SB_RDONLY;
3064 if (test_bit(LL_SBI_VERBOSE, sbi->ll_flags))
3065 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
3066 read_only ? "read-only" : "read-write");
3072 * Cleanup the open handle that is cached on MDT-side.
3074 * For open case, the client side open handling thread may hit error
3075 * after the MDT grant the open. Under such case, the client should
3076 * send close RPC to the MDT as cleanup; otherwise, the open handle
3077 * on the MDT will be leaked there until the client umount or evicted.
3079 * In further, if someone unlinked the file, because the open handle
3080 * holds the reference on such file/object, then it will block the
3081 * subsequent threads that want to locate such object via FID.
3083 * \param[in] sb super block for this file-system
3084 * \param[in] open_req pointer to the original open request
3086 void ll_open_cleanup(struct super_block *sb, struct req_capsule *pill)
3088 struct mdt_body *body;
3089 struct md_op_data *op_data;
3090 struct ptlrpc_request *close_req = NULL;
3091 struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
3094 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
3095 OBD_ALLOC_PTR(op_data);
3096 if (op_data == NULL) {
3097 CWARN("%s: cannot allocate op_data to release open handle for "
3098 DFID"\n", ll_s2sbi(sb)->ll_fsname, PFID(&body->mbo_fid1));
3103 op_data->op_fid1 = body->mbo_fid1;
3104 op_data->op_open_handle = body->mbo_open_handle;
3105 op_data->op_mod_time = ktime_get_real_seconds();
3106 md_close(exp, op_data, NULL, &close_req);
3107 ptlrpc_req_finished(close_req);
3108 ll_finish_md_op_data(op_data);
3113 int ll_prep_inode(struct inode **inode, struct req_capsule *pill,
3114 struct super_block *sb, struct lookup_intent *it)
3116 struct ll_sb_info *sbi = NULL;
3117 struct lustre_md md = { NULL };
3118 bool default_lmv_deleted = false;
3123 LASSERT(*inode || sb);
3124 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
3125 rc = md_get_lustre_md(sbi->ll_md_exp, pill, sbi->ll_dt_exp,
3126 sbi->ll_md_exp, &md);
3131 * clear default_lmv only if intent_getattr reply doesn't contain it.
3132 * but it needs to be done after iget, check this early because
3133 * ll_update_lsm_md() may change md.
3135 if (it && (it->it_op & (IT_LOOKUP | IT_GETATTR)) &&
3136 S_ISDIR(md.body->mbo_mode) && !md.default_lmv)
3137 default_lmv_deleted = true;
3140 rc = ll_update_inode(*inode, &md);
3144 bool api32 = test_bit(LL_SBI_32BIT_API, sbi->ll_flags);
3145 struct lu_fid *fid1 = &md.body->mbo_fid1;
3147 LASSERT(sb != NULL);
3150 * At this point server returns to client's same fid as client
3151 * generated for creating. So using ->fid1 is okay here.
3153 if (!fid_is_sane(fid1)) {
3154 CERROR("%s: Fid is insane "DFID"\n",
3155 sbi->ll_fsname, PFID(fid1));
3156 GOTO(out, rc = -EINVAL);
3159 *inode = ll_iget(sb, cl_fid_build_ino(fid1, api32), &md);
3160 if (IS_ERR(*inode)) {
3162 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
3164 CERROR("new_inode -fatal: rc %d\n", rc);
3169 /* Handling piggyback layout lock.
3170 * Layout lock can be piggybacked by getattr and open request.
3171 * The lsm can be applied to inode only if it comes with a layout lock
3172 * otherwise correct layout may be overwritten, for example:
3173 * 1. proc1: mdt returns a lsm but not granting layout
3174 * 2. layout was changed by another client
3175 * 3. proc2: refresh layout and layout lock granted
3176 * 4. proc1: to apply a stale layout */
3177 if (it != NULL && it->it_lock_mode != 0) {
3178 struct lustre_handle lockh;
3179 struct ldlm_lock *lock;
3181 lockh.cookie = it->it_lock_handle;
3182 lock = ldlm_handle2lock(&lockh);
3183 LASSERT(lock != NULL);
3184 if (ldlm_has_layout(lock)) {
3185 struct cl_object_conf conf;
3187 memset(&conf, 0, sizeof(conf));
3188 conf.coc_opc = OBJECT_CONF_SET;
3189 conf.coc_inode = *inode;
3190 conf.coc_lock = lock;
3191 conf.u.coc_layout = md.layout;
3192 (void)ll_layout_conf(*inode, &conf);
3194 LDLM_LOCK_PUT(lock);
3197 if (default_lmv_deleted)
3198 ll_update_default_lsm_md(*inode, &md);
3200 /* we may want to apply some policy for foreign file/dir */
3201 if (ll_sbi_has_foreign_symlink(sbi)) {
3202 rc = ll_manage_foreign(*inode, &md);
3210 /* cleanup will be done if necessary */
3211 md_free_lustre_md(sbi->ll_md_exp, &md);
3213 if (rc != 0 && it != NULL && it->it_op & IT_OPEN) {
3214 ll_intent_drop_lock(it);
3215 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, pill);
3221 int ll_obd_statfs(struct inode *inode, void __user *arg)
3223 struct ll_sb_info *sbi = NULL;
3224 struct obd_export *exp;
3225 struct obd_ioctl_data *data = NULL;
3230 sbi = ll_i2sbi(inode);
3232 GOTO(out_statfs, rc = -EINVAL);
3234 rc = obd_ioctl_getdata(&data, &len, arg);
3236 GOTO(out_statfs, rc);
3238 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
3239 !data->ioc_pbuf1 || !data->ioc_pbuf2)
3240 GOTO(out_statfs, rc = -EINVAL);
3242 if (data->ioc_inllen1 != sizeof(__u32) ||
3243 data->ioc_inllen2 != sizeof(__u32) ||
3244 data->ioc_plen1 != sizeof(struct obd_statfs) ||
3245 data->ioc_plen2 != sizeof(struct obd_uuid))
3246 GOTO(out_statfs, rc = -EINVAL);
3248 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
3249 if (type & LL_STATFS_LMV)
3250 exp = sbi->ll_md_exp;
3251 else if (type & LL_STATFS_LOV)
3252 exp = sbi->ll_dt_exp;
3254 GOTO(out_statfs, rc = -ENODEV);
3256 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, data, NULL);
3258 GOTO(out_statfs, rc);
3260 OBD_FREE_LARGE(data, len);
3265 * this is normally called in ll_fini_md_op_data(), but sometimes it needs to
3266 * be called early to avoid deadlock.
3268 void ll_unlock_md_op_lsm(struct md_op_data *op_data)
3270 if (op_data->op_mea2_sem) {
3271 up_read_non_owner(op_data->op_mea2_sem);
3272 op_data->op_mea2_sem = NULL;
3275 if (op_data->op_mea1_sem) {
3276 up_read_non_owner(op_data->op_mea1_sem);
3277 op_data->op_mea1_sem = NULL;
3281 /* this function prepares md_op_data hint for passing it down to MD stack. */
3282 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
3283 struct inode *i1, struct inode *i2,
3284 const char *name, size_t namelen,
3285 __u32 mode, enum md_op_code opc,
3288 struct llcrypt_name fname = { 0 };
3291 LASSERT(i1 != NULL);
3294 /* Do not reuse namelen for something else. */
3296 return ERR_PTR(-EINVAL);
3298 if ((!IS_ENCRYPTED(i1) ||
3299 (opc != LUSTRE_OPC_LOOKUP && opc != LUSTRE_OPC_CREATE)) &&
3300 namelen > ll_i2sbi(i1)->ll_namelen)
3301 return ERR_PTR(-ENAMETOOLONG);
3303 /* "/" is not valid name, but it's allowed */
3304 if (!lu_name_is_valid_2(name, namelen) &&
3305 strncmp("/", name, namelen) != 0)
3306 return ERR_PTR(-EINVAL);
3309 if (op_data == NULL)
3310 OBD_ALLOC_PTR(op_data);
3312 if (op_data == NULL)
3313 return ERR_PTR(-ENOMEM);
3315 ll_i2gids(op_data->op_suppgids, i1, i2);
3316 /* If the client is using a subdir mount and looks at what it sees as
3317 * /.fscrypt, interpret it as the .fscrypt dir at the root of the fs.
3319 if (unlikely(i1->i_sb && i1->i_sb->s_root && is_root_inode(i1) &&
3320 !fid_is_root(ll_inode2fid(i1)) &&
3321 name && namelen == strlen(dot_fscrypt_name) &&
3322 strncmp(name, dot_fscrypt_name, namelen) == 0))
3323 lu_root_fid(&op_data->op_fid1);
3325 op_data->op_fid1 = *ll_inode2fid(i1);
3327 if (S_ISDIR(i1->i_mode)) {
3328 down_read_non_owner(&ll_i2info(i1)->lli_lsm_sem);
3329 op_data->op_mea1_sem = &ll_i2info(i1)->lli_lsm_sem;
3330 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
3331 op_data->op_default_mea1 = ll_i2info(i1)->lli_default_lsm_md;
3335 op_data->op_fid2 = *ll_inode2fid(i2);
3336 if (S_ISDIR(i2->i_mode)) {
3338 /* i2 is typically a child of i1, and MUST be
3339 * further from the root to avoid deadlocks.
3341 down_read_non_owner(&ll_i2info(i2)->lli_lsm_sem);
3342 op_data->op_mea2_sem =
3343 &ll_i2info(i2)->lli_lsm_sem;
3345 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
3348 fid_zero(&op_data->op_fid2);
3351 if (test_bit(LL_SBI_64BIT_HASH, ll_i2sbi(i1)->ll_flags))
3352 op_data->op_cli_flags |= CLI_HASH64;
3354 if (ll_need_32bit_api(ll_i2sbi(i1)))
3355 op_data->op_cli_flags |= CLI_API32;
3357 if ((i2 && is_root_inode(i2)) ||
3358 opc == LUSTRE_OPC_LOOKUP || opc == LUSTRE_OPC_CREATE) {
3359 /* In case of lookup, ll_setup_filename() has already been
3360 * called in ll_lookup_it(), so just take provided name.
3361 * Also take provided name if we are dealing with root inode.
3363 fname.disk_name.name = (unsigned char *)name;
3364 fname.disk_name.len = namelen;
3365 } else if (name && namelen) {
3366 struct qstr dname = QSTR_INIT(name, namelen);
3368 struct lu_fid *pfid = NULL;
3372 if (!S_ISDIR(i1->i_mode) && i2 && S_ISDIR(i2->i_mode)) {
3373 /* special case when called from ll_link() */
3378 lookup = (int)(opc == LUSTRE_OPC_ANY);
3380 if (opc == LUSTRE_OPC_ANY && lookup)
3382 rc = ll_setup_filename(dir, &dname, lookup, &fname, pfid);
3384 ll_finish_md_op_data(op_data);
3387 if (pfid && !fid_is_zero(pfid)) {
3389 op_data->op_fid2 = fid;
3390 op_data->op_bias = MDS_FID_OP;
3392 if (fname.disk_name.name &&
3393 fname.disk_name.name != (unsigned char *)name) {
3394 /* op_data->op_name must be freed after use */
3395 op_data->op_flags |= MF_OPNAME_KMALLOCED;
3399 /* In fact LUSTRE_OPC_LOOKUP, LUSTRE_OPC_OPEN
3400 * are LUSTRE_OPC_ANY
3402 if (opc == LUSTRE_OPC_LOOKUP || opc == LUSTRE_OPC_OPEN)
3403 op_data->op_code = LUSTRE_OPC_ANY;
3405 op_data->op_code = opc;
3406 op_data->op_name = fname.disk_name.name;
3407 op_data->op_namelen = fname.disk_name.len;
3408 op_data->op_mode = mode;
3409 op_data->op_mod_time = ktime_get_real_seconds();
3410 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
3411 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
3412 op_data->op_cap = current_cap();
3413 op_data->op_mds = 0;
3414 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
3415 filename_is_volatile(name, namelen, &op_data->op_mds)) {
3416 op_data->op_bias |= MDS_CREATE_VOLATILE;
3418 op_data->op_data = data;
3423 void ll_finish_md_op_data(struct md_op_data *op_data)
3425 ll_unlock_md_op_lsm(op_data);
3426 ll_security_release_secctx(op_data->op_file_secctx,
3427 op_data->op_file_secctx_size);
3428 if (op_data->op_flags & MF_OPNAME_KMALLOCED)
3429 /* allocated via ll_setup_filename called
3430 * from ll_prep_md_op_data
3432 kfree(op_data->op_name);
3433 llcrypt_free_ctx(op_data->op_file_encctx, op_data->op_file_encctx_size);
3434 OBD_FREE_PTR(op_data);
3437 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
3439 struct ll_sb_info *sbi;
3442 LASSERT(seq && dentry);
3443 sbi = ll_s2sbi(dentry->d_sb);
3445 if (test_bit(LL_SBI_NOLCK, sbi->ll_flags))
3446 seq_puts(seq, "nolock");
3448 for (i = 1; ll_sbi_flags_name[i].token != LL_SBI_NUM_MOUNT_OPT; i++) {
3449 /* match_table in some cases has patterns for both enabled and
3450 * disabled cases. Ignore 'no'xxx versions if bit is set.
3452 if (test_bit(ll_sbi_flags_name[i].token, sbi->ll_flags) &&
3453 strncmp(ll_sbi_flags_name[i].pattern, "no", 2)) {
3454 if (ll_sbi_flags_name[i].token ==
3455 LL_SBI_FOREIGN_SYMLINK) {
3456 seq_show_option(seq, "foreign_symlink",
3457 sbi->ll_foreign_symlink_prefix);
3459 seq_printf(seq, ",%s",
3460 ll_sbi_flags_name[i].pattern);
3463 /* You can have either localflock or flock but not
3464 * both. If localflock is set don't print flock or
3467 if (ll_sbi_flags_name[i].token == LL_SBI_LOCALFLOCK)
3469 } else if (!test_bit(ll_sbi_flags_name[i].token, sbi->ll_flags) &&
3470 !strncmp(ll_sbi_flags_name[i].pattern, "no", 2)) {
3471 seq_printf(seq, ",%s",
3472 ll_sbi_flags_name[i].pattern);
3476 llcrypt_show_test_dummy_encryption(seq, ',', dentry->d_sb);
3482 * Get obd name by cmd, and copy out to user space
3484 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
3486 struct ll_sb_info *sbi = ll_i2sbi(inode);
3487 struct obd_device *obd;
3490 if (cmd == OBD_IOC_GETNAME_OLD || cmd == OBD_IOC_GETDTNAME)
3491 obd = class_exp2obd(sbi->ll_dt_exp);
3492 else if (cmd == OBD_IOC_GETMDNAME)
3493 obd = class_exp2obd(sbi->ll_md_exp);
3500 if (copy_to_user((void __user *)arg, obd->obd_name,
3501 strlen(obd->obd_name) + 1))
3508 struct work_struct db_work;
3509 struct dentry *db_dentry;
3510 /* Let's hope the path is not too long, 32 bytes for the work struct
3513 char buf[PAGE_SIZE - sizeof(struct work_struct) - sizeof(void *)];
3516 static void ll_dput_later(struct work_struct *work)
3518 struct dname_buf *db = container_of(work, struct dname_buf, db_work);
3520 dput(db->db_dentry);
3521 free_page((unsigned long)db);
3524 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
3531 p.mnt = current->fs->root.mnt;
3533 path = d_path(&p, buf, bufsize);
3538 void ll_dirty_page_discard_warn(struct inode *inode, int ioret)
3540 struct dname_buf *db;
3542 struct dentry *dentry = NULL;
3544 /* this can be called inside spin lock so use GFP_ATOMIC. */
3545 db = (struct dname_buf *)__get_free_page(GFP_ATOMIC);
3548 dentry = d_find_alias(inode);
3550 path = ll_d_path(dentry, db->buf, sizeof(db->buf));
3553 /* The below message is checked in recovery-small.sh test_24b */
3555 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
3556 "(rc %d)\n", ll_i2sbi(inode)->ll_fsname,
3557 s2lsi(inode->i_sb)->lsi_lmd->lmd_dev,
3558 PFID(ll_inode2fid(inode)),
3559 (path && !IS_ERR(path)) ? path : "", ioret);
3561 if (dentry != NULL) {
3562 /* We cannot dput here since if we happen to be the last holder
3563 * then we can end up waiting for page evictions that
3564 * in turn wait for RPCs that need this instance of ptlrpcd
3565 * (callng brw_interpret->*page_completion*->vmpage_error->here)
3568 INIT_WORK(&db->db_work, ll_dput_later);
3569 db->db_dentry = dentry;
3570 schedule_work(&db->db_work);
3573 free_page((unsigned long)db);
3577 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
3578 struct lov_user_md **kbuf)
3580 struct lov_user_md lum;
3584 if (copy_from_user(&lum, md, sizeof(lum)))
3587 lum_size = ll_lov_user_md_size(&lum);
3591 OBD_ALLOC_LARGE(*kbuf, lum_size);
3595 if (copy_from_user(*kbuf, md, lum_size) != 0) {
3596 OBD_FREE_LARGE(*kbuf, lum_size);
3604 * Compute llite root squash state after a change of root squash
3605 * configuration setting or add/remove of a lnet nid
3607 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
3609 struct root_squash_info *squash = &sbi->ll_squash;
3612 struct lnet_processid id;
3614 /* Update norootsquash flag */
3615 spin_lock(&squash->rsi_lock);
3616 if (list_empty(&squash->rsi_nosquash_nids))
3617 clear_bit(LL_SBI_NOROOTSQUASH, sbi->ll_flags);
3619 /* Do not apply root squash as soon as one of our NIDs is
3620 * in the nosquash_nids list */
3623 while (LNetGetId(i++, &id) != -ENOENT) {
3624 if (nid_is_lo0(&id.nid))
3626 if (cfs_match_nid(lnet_nid_to_nid4(&id.nid),
3627 &squash->rsi_nosquash_nids)) {
3633 set_bit(LL_SBI_NOROOTSQUASH, sbi->ll_flags);
3635 clear_bit(LL_SBI_NOROOTSQUASH, sbi->ll_flags);
3637 spin_unlock(&squash->rsi_lock);
3641 * Parse linkea content to extract information about a given hardlink
3643 * \param[in] ldata - Initialized linkea data
3644 * \param[in] linkno - Link identifier
3645 * \param[out] parent_fid - The entry's parent FID
3646 * \param[out] ln - Entry name destination buffer
3648 * \retval 0 on success
3649 * \retval Appropriate negative error code on failure
3651 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
3652 struct lu_fid *parent_fid, struct lu_name *ln)
3658 rc = linkea_init_with_rec(ldata);
3662 if (linkno >= ldata->ld_leh->leh_reccount)
3663 /* beyond last link */
3666 linkea_first_entry(ldata);
3667 for (idx = 0; ldata->ld_lee != NULL; idx++) {
3668 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
3673 linkea_next_entry(ldata);
3683 * Get parent FID and name of an identified link. Operation is performed for
3684 * a given link number, letting the caller iterate over linkno to list one or
3685 * all links of an entry.
3687 * \param[in] file - File descriptor against which to perform the operation
3688 * \param[in,out] arg - User-filled structure containing the linkno to operate
3689 * on and the available size. It is eventually filled with
3690 * the requested information or left untouched on error
3692 * \retval - 0 on success
3693 * \retval - Appropriate negative error code on failure
3695 int ll_getparent(struct file *file, struct getparent __user *arg)
3697 struct inode *inode = file_inode(file);
3698 struct linkea_data *ldata;
3699 struct lu_buf buf = LU_BUF_NULL;
3701 struct lu_fid parent_fid;
3708 if (!capable(CAP_DAC_READ_SEARCH) &&
3709 !test_bit(LL_SBI_USER_FID2PATH, ll_i2sbi(inode)->ll_flags))
3712 if (get_user(name_size, &arg->gp_name_size))
3715 if (get_user(linkno, &arg->gp_linkno))
3718 if (name_size > PATH_MAX)
3721 OBD_ALLOC(ldata, sizeof(*ldata));
3725 rc = linkea_data_new(ldata, &buf);
3727 GOTO(ldata_free, rc);
3729 rc = ll_xattr_list(inode, XATTR_NAME_LINK, XATTR_TRUSTED_T, buf.lb_buf,
3730 buf.lb_len, OBD_MD_FLXATTR);
3734 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
3738 if (ln.ln_namelen >= name_size)
3739 GOTO(lb_free, rc = -EOVERFLOW);
3741 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
3742 GOTO(lb_free, rc = -EFAULT);
3744 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
3745 GOTO(lb_free, rc = -EFAULT);
3747 if (put_user('\0', arg->gp_name + ln.ln_namelen))
3748 GOTO(lb_free, rc = -EFAULT);
3753 OBD_FREE(ldata, sizeof(*ldata));