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/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/llite/llite_lib.c
34 * Lustre Light Super operations
37 #define DEBUG_SUBSYSTEM S_LLITE
39 #include <linux/cpu.h>
40 #include <linux/module.h>
41 #include <linux/random.h>
42 #include <linux/statfs.h>
43 #include <linux/time.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/security.h>
52 #include <linux/fs_struct.h>
54 #ifndef HAVE_CPUS_READ_LOCK
55 #include <libcfs/linux/linux-cpu.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;
102 RETURN(ERR_PTR(-ENOMEM));
104 rc = pcc_super_init(&sbi->ll_pcc_super);
108 spin_lock_init(&sbi->ll_lock);
109 mutex_init(&sbi->ll_lco.lco_lock);
110 spin_lock_init(&sbi->ll_pp_extent_lock);
111 spin_lock_init(&sbi->ll_process_lock);
112 sbi->ll_rw_stats_on = 0;
113 sbi->ll_statfs_max_age = OBD_STATFS_CACHE_SECONDS;
116 pages = si.totalram - si.totalhigh;
117 lru_page_max = pages / 2;
119 sbi->ll_ra_info.ra_async_max_active = ll_get_ra_async_max_active();
120 sbi->ll_ra_info.ll_readahead_wq =
121 cfs_cpt_bind_workqueue("ll-readahead-wq", cfs_cpt_tab,
123 sbi->ll_ra_info.ra_async_max_active);
124 if (IS_ERR(sbi->ll_ra_info.ll_readahead_wq))
125 GOTO(out_pcc, rc = PTR_ERR(sbi->ll_ra_info.ll_readahead_wq));
127 /* initialize ll_cache data */
128 sbi->ll_cache = cl_cache_init(lru_page_max);
129 if (sbi->ll_cache == NULL)
130 GOTO(out_destroy_ra, rc = -ENOMEM);
132 sbi->ll_ra_info.ra_max_pages =
133 min(pages / 32, SBI_DEFAULT_READ_AHEAD_MAX);
134 sbi->ll_ra_info.ra_max_pages_per_file =
135 min(sbi->ll_ra_info.ra_max_pages / 4,
136 SBI_DEFAULT_READ_AHEAD_PER_FILE_MAX);
137 sbi->ll_ra_info.ra_async_pages_per_file_threshold =
138 sbi->ll_ra_info.ra_max_pages_per_file;
139 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = -1;
140 atomic_set(&sbi->ll_ra_info.ra_async_inflight, 0);
142 sbi->ll_flags |= LL_SBI_VERBOSE;
143 #ifdef ENABLE_CHECKSUM
144 sbi->ll_flags |= LL_SBI_CHECKSUM;
147 sbi->ll_flags |= LL_SBI_FLOCK;
150 #ifdef HAVE_LRU_RESIZE_SUPPORT
151 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
153 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
155 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
156 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
158 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
162 /* metadata statahead is enabled by default */
163 sbi->ll_sa_running_max = LL_SA_RUNNING_DEF;
164 sbi->ll_sa_max = LL_SA_RPC_DEF;
165 atomic_set(&sbi->ll_sa_total, 0);
166 atomic_set(&sbi->ll_sa_wrong, 0);
167 atomic_set(&sbi->ll_sa_running, 0);
168 atomic_set(&sbi->ll_agl_total, 0);
169 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
170 sbi->ll_flags |= LL_SBI_FAST_READ;
171 sbi->ll_flags |= LL_SBI_TINY_WRITE;
172 ll_sbi_set_encrypt(sbi, true);
175 sbi->ll_squash.rsi_uid = 0;
176 sbi->ll_squash.rsi_gid = 0;
177 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
178 spin_lock_init(&sbi->ll_squash.rsi_lock);
180 /* Per-filesystem file heat */
181 sbi->ll_heat_decay_weight = SBI_DEFAULT_HEAT_DECAY_WEIGHT;
182 sbi->ll_heat_period_second = SBI_DEFAULT_HEAT_PERIOD_SECOND;
185 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
187 pcc_super_fini(&sbi->ll_pcc_super);
193 static void ll_free_sbi(struct super_block *sb)
195 struct ll_sb_info *sbi = ll_s2sbi(sb);
199 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
200 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
201 if (sbi->ll_ra_info.ll_readahead_wq)
202 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
203 if (sbi->ll_cache != NULL) {
204 cl_cache_decref(sbi->ll_cache);
205 sbi->ll_cache = NULL;
207 pcc_super_fini(&sbi->ll_pcc_super);
208 OBD_FREE(sbi, sizeof(*sbi));
213 static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
215 struct inode *root = NULL;
216 struct ll_sb_info *sbi = ll_s2sbi(sb);
217 struct obd_statfs *osfs = NULL;
218 struct ptlrpc_request *request = NULL;
219 struct obd_connect_data *data = NULL;
220 struct obd_uuid *uuid;
221 struct md_op_data *op_data;
222 struct lustre_md lmd;
224 int size, err, checksum;
227 sbi->ll_md_obd = class_name2obd(md);
228 if (!sbi->ll_md_obd) {
229 CERROR("MD %s: not setup or attached\n", md);
243 /* pass client page size via ocd_grant_blkbits, the server should report
244 * back its backend blocksize for grant calculation purpose */
245 data->ocd_grant_blkbits = PAGE_SHIFT;
247 /* indicate MDT features supported by this client */
248 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
249 OBD_CONNECT_ATTRFID | OBD_CONNECT_GRANT |
250 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
251 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
252 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
253 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
254 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
255 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
256 OBD_CONNECT_64BITHASH |
257 OBD_CONNECT_EINPROGRESS |
258 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
259 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
260 OBD_CONNECT_MAX_EASIZE |
261 OBD_CONNECT_FLOCK_DEAD |
262 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
263 OBD_CONNECT_OPEN_BY_FID |
264 OBD_CONNECT_DIR_STRIPE |
265 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_CKSUM |
266 OBD_CONNECT_SUBTREE |
267 OBD_CONNECT_MULTIMODRPCS |
268 OBD_CONNECT_GRANT_PARAM |
269 OBD_CONNECT_SHORTIO | OBD_CONNECT_FLAGS2;
271 data->ocd_connect_flags2 = OBD_CONNECT2_DIR_MIGRATE |
272 OBD_CONNECT2_SUM_STATFS |
273 OBD_CONNECT2_OVERSTRIPING |
275 OBD_CONNECT2_LOCK_CONVERT |
276 OBD_CONNECT2_ARCHIVE_ID_ARRAY |
277 OBD_CONNECT2_INC_XID |
279 OBD_CONNECT2_ASYNC_DISCARD |
281 OBD_CONNECT2_CRUSH | OBD_CONNECT2_LSEEK |
282 OBD_CONNECT2_GETATTR_PFID;
284 #ifdef HAVE_LRU_RESIZE_SUPPORT
285 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
286 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
288 data->ocd_connect_flags |= OBD_CONNECT_ACL_FLAGS;
290 data->ocd_cksum_types = obd_cksum_types_supported_client();
292 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
293 /* flag mdc connection as lightweight, only used for test
294 * purpose, use with care */
295 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
297 data->ocd_ibits_known = MDS_INODELOCK_FULL;
298 data->ocd_version = LUSTRE_VERSION_CODE;
300 if (sb->s_flags & SB_RDONLY)
301 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
302 if (sbi->ll_flags & LL_SBI_USER_XATTR)
303 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
306 /* Setting this indicates we correctly support S_NOSEC (See kernel
307 * commit 9e1f1de02c2275d7172e18dc4e7c2065777611bf)
309 sb->s_flags |= SB_NOSEC;
312 if (sbi->ll_flags & LL_SBI_FLOCK)
313 sbi->ll_fop = &ll_file_operations_flock;
314 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
315 sbi->ll_fop = &ll_file_operations;
317 sbi->ll_fop = &ll_file_operations_noflock;
319 /* always ping even if server suppress_pings */
320 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
321 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
323 obd_connect_set_secctx(data);
324 if (ll_sbi_has_encrypt(sbi))
325 obd_connect_set_enc(data);
327 #if defined(CONFIG_SECURITY)
328 data->ocd_connect_flags2 |= OBD_CONNECT2_SELINUX_POLICY;
331 data->ocd_brw_size = MD_MAX_BRW_SIZE;
333 err = obd_connect(NULL, &sbi->ll_md_exp, sbi->ll_md_obd,
334 &sbi->ll_sb_uuid, data, sbi->ll_cache);
336 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
337 "recovery, of which this client is not a "
338 "part. Please wait for recovery to complete,"
339 " abort, or time out.\n", md);
342 CERROR("cannot connect to %s: rc = %d\n", md, err);
346 sbi->ll_md_exp->exp_connect_data = *data;
348 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
349 LUSTRE_SEQ_METADATA);
351 CERROR("%s: Can't init metadata layer FID infrastructure, "
352 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
356 /* For mount, we only need fs info from MDT0, and also in DNE, it
357 * can make sure the client can be mounted as long as MDT0 is
359 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
360 ktime_get_seconds() - sbi->ll_statfs_max_age,
361 OBD_STATFS_FOR_MDT0);
363 GOTO(out_md_fid, err);
365 /* This needs to be after statfs to ensure connect has finished.
366 * Note that "data" does NOT contain the valid connect reply.
367 * If connecting to a 1.8 server there will be no LMV device, so
368 * we can access the MDC export directly and exp_connect_flags will
369 * be non-zero, but if accessing an upgraded 2.1 server it will
370 * have the correct flags filled in.
371 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
372 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
373 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
374 valid != CLIENT_CONNECT_MDT_REQD) {
377 OBD_ALLOC_WAIT(buf, PAGE_SIZE);
378 obd_connect_flags2str(buf, PAGE_SIZE,
379 valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
380 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
381 "feature(s) needed for correct operation "
382 "of this client (%s). Please upgrade "
383 "server or downgrade client.\n",
384 sbi->ll_md_exp->exp_obd->obd_name, buf);
385 OBD_FREE(buf, PAGE_SIZE);
386 GOTO(out_md_fid, err = -EPROTO);
389 size = sizeof(*data);
390 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
391 KEY_CONN_DATA, &size, data);
393 CERROR("%s: Get connect data failed: rc = %d\n",
394 sbi->ll_md_exp->exp_obd->obd_name, err);
395 GOTO(out_md_fid, err);
398 LASSERT(osfs->os_bsize);
399 sb->s_blocksize = osfs->os_bsize;
400 sb->s_blocksize_bits = log2(osfs->os_bsize);
401 sb->s_magic = LL_SUPER_MAGIC;
402 sb->s_maxbytes = MAX_LFS_FILESIZE;
403 sbi->ll_namelen = osfs->os_namelen;
404 sbi->ll_mnt.mnt = current->fs->root.mnt;
406 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
407 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
408 LCONSOLE_INFO("Disabling user_xattr feature because "
409 "it is not supported on the server\n");
410 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
413 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
415 sb->s_flags |= SB_POSIXACL;
417 sbi->ll_flags |= LL_SBI_ACL;
419 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
421 sb->s_flags &= ~SB_POSIXACL;
423 sbi->ll_flags &= ~LL_SBI_ACL;
426 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
427 sbi->ll_flags |= LL_SBI_64BIT_HASH;
429 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
430 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
432 if (obd_connect_has_secctx(data))
433 sbi->ll_flags |= LL_SBI_FILE_SECCTX;
435 if (ll_sbi_has_encrypt(sbi) && !obd_connect_has_enc(data)) {
436 if (ll_sbi_has_test_dummy_encryption(sbi))
437 LCONSOLE_WARN("%s: server %s does not support encryption feature, encryption deactivated.\n",
439 sbi->ll_md_exp->exp_obd->obd_name);
440 ll_sbi_set_encrypt(sbi, false);
443 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
444 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
445 LCONSOLE_INFO("%s: disabling xattr cache due to "
446 "unknown maximum xattr size.\n", dt);
447 } else if (!sbi->ll_xattr_cache_set) {
448 /* If xattr_cache is already set (no matter 0 or 1)
449 * during processing llog, it won't be enabled here. */
450 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
451 sbi->ll_xattr_cache_enabled = 1;
455 sbi->ll_dt_obd = class_name2obd(dt);
456 if (!sbi->ll_dt_obd) {
457 CERROR("DT %s: not setup or attached\n", dt);
458 GOTO(out_md_fid, err = -ENODEV);
461 /* pass client page size via ocd_grant_blkbits, the server should report
462 * back its backend blocksize for grant calculation purpose */
463 data->ocd_grant_blkbits = PAGE_SHIFT;
465 /* indicate OST features supported by this client */
466 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
467 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
468 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
469 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
470 OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
471 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
472 OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
473 OBD_CONNECT_EINPROGRESS |
474 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
475 OBD_CONNECT_LAYOUTLOCK |
476 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
477 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_SHORTIO |
478 OBD_CONNECT_FLAGS2 | OBD_CONNECT_GRANT_SHRINK;
479 data->ocd_connect_flags2 = OBD_CONNECT2_LOCKAHEAD |
480 OBD_CONNECT2_INC_XID | OBD_CONNECT2_LSEEK;
482 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
483 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
485 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
486 * disabled by default, because it can still be enabled on the
487 * fly via /sys. As a consequence, we still need to come to an
488 * agreement on the supported algorithms at connect time
490 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
492 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
493 data->ocd_cksum_types = OBD_CKSUM_ADLER;
495 data->ocd_cksum_types = obd_cksum_types_supported_client();
497 #ifdef HAVE_LRU_RESIZE_SUPPORT
498 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
500 /* always ping even if server suppress_pings */
501 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
502 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
504 if (ll_sbi_has_encrypt(sbi))
505 obd_connect_set_enc(data);
507 CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d "
508 "ocd_grant: %d\n", data->ocd_connect_flags,
509 data->ocd_version, data->ocd_grant);
511 sbi->ll_dt_obd->obd_upcall.onu_owner = &sbi->ll_lco;
512 sbi->ll_dt_obd->obd_upcall.onu_upcall = cl_ocd_update;
514 data->ocd_brw_size = DT_MAX_BRW_SIZE;
516 err = obd_connect(NULL, &sbi->ll_dt_exp, sbi->ll_dt_obd,
517 &sbi->ll_sb_uuid, data, sbi->ll_cache);
519 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
520 "recovery, of which this client is not a "
521 "part. Please wait for recovery to "
522 "complete, abort, or time out.\n", dt);
525 CERROR("%s: Cannot connect to %s: rc = %d\n",
526 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
530 if (ll_sbi_has_encrypt(sbi) &&
531 !obd_connect_has_enc(&sbi->ll_dt_obd->u.lov.lov_ocd)) {
532 if (ll_sbi_has_test_dummy_encryption(sbi))
533 LCONSOLE_WARN("%s: server %s does not support encryption feature, encryption deactivated.\n",
535 ll_sbi_set_encrypt(sbi, false);
536 } else if (ll_sbi_has_test_dummy_encryption(sbi)) {
537 LCONSOLE_WARN("Test dummy encryption mode enabled\n");
540 sbi->ll_dt_exp->exp_connect_data = *data;
542 /* Don't change value if it was specified in the config log */
543 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages == -1) {
544 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
545 max_t(unsigned long, SBI_DEFAULT_READ_AHEAD_WHOLE_MAX,
546 (data->ocd_brw_size >> PAGE_SHIFT));
547 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages >
548 sbi->ll_ra_info.ra_max_pages_per_file)
549 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
550 sbi->ll_ra_info.ra_max_pages_per_file;
553 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
554 LUSTRE_SEQ_METADATA);
556 CERROR("%s: Can't init data layer FID infrastructure, "
557 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
561 mutex_lock(&sbi->ll_lco.lco_lock);
562 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
563 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
564 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
565 mutex_unlock(&sbi->ll_lco.lco_lock);
567 fid_zero(&sbi->ll_root_fid);
568 err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
571 CERROR("cannot mds_connect: rc = %d\n", err);
572 GOTO(out_lock_cn_cb, err);
574 if (!fid_is_sane(&sbi->ll_root_fid)) {
575 CERROR("%s: Invalid root fid "DFID" during mount\n",
576 sbi->ll_md_exp->exp_obd->obd_name,
577 PFID(&sbi->ll_root_fid));
578 GOTO(out_lock_cn_cb, err = -EINVAL);
580 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
582 sb->s_op = &lustre_super_operations;
583 sb->s_xattr = ll_xattr_handlers;
584 #if THREAD_SIZE >= 8192 /*b=17630*/
585 sb->s_export_op = &lustre_export_operations;
587 #ifdef HAVE_LUSTRE_CRYPTO
588 llcrypt_set_ops(sb, &lustre_cryptops);
592 * XXX: move this to after cbd setup? */
593 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
594 if (sbi->ll_flags & LL_SBI_ACL)
595 valid |= OBD_MD_FLACL;
597 OBD_ALLOC_PTR(op_data);
599 GOTO(out_lock_cn_cb, err = -ENOMEM);
601 op_data->op_fid1 = sbi->ll_root_fid;
602 op_data->op_mode = 0;
603 op_data->op_valid = valid;
605 err = md_getattr(sbi->ll_md_exp, op_data, &request);
607 OBD_FREE_PTR(op_data);
609 CERROR("%s: md_getattr failed for root: rc = %d\n",
610 sbi->ll_md_exp->exp_obd->obd_name, err);
611 GOTO(out_lock_cn_cb, err);
614 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
615 sbi->ll_md_exp, &lmd);
617 CERROR("failed to understand root inode md: rc = %d\n", err);
618 ptlrpc_req_finished(request);
619 GOTO(out_lock_cn_cb, err);
622 LASSERT(fid_is_sane(&sbi->ll_root_fid));
623 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
624 sbi->ll_flags & LL_SBI_32BIT_API),
626 md_free_lustre_md(sbi->ll_md_exp, &lmd);
627 ptlrpc_req_finished(request);
631 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
633 CERROR("%s: bad ll_iget() for root: rc = %d\n",
634 sbi->ll_fsname, err);
638 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
639 if (sbi->ll_checksum_set) {
640 err = obd_set_info_async(NULL, sbi->ll_dt_exp,
641 sizeof(KEY_CHECKSUM), KEY_CHECKSUM,
642 sizeof(checksum), &checksum, NULL);
644 CERROR("%s: Set checksum failed: rc = %d\n",
645 sbi->ll_dt_exp->exp_obd->obd_name, err);
651 sb->s_root = d_make_root(root);
652 if (sb->s_root == NULL) {
654 CERROR("%s: can't make root dentry: rc = %d\n",
655 sbi->ll_fsname, err);
659 sbi->ll_sdev_orig = sb->s_dev;
661 /* We set sb->s_dev equal on all lustre clients in order to support
662 * NFS export clustering. NFSD requires that the FSID be the same
664 /* s_dev is also used in lt_compare() to compare two fs, but that is
665 * only a node-local comparison. */
666 uuid = obd_get_uuid(sbi->ll_md_exp);
668 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
675 if (sbi->ll_dt_obd) {
676 err = sysfs_create_link(&sbi->ll_kset.kobj,
677 &sbi->ll_dt_obd->obd_kset.kobj,
678 sbi->ll_dt_obd->obd_type->typ_name);
680 CERROR("%s: could not register %s in llite: rc = %d\n",
681 dt, sbi->ll_fsname, err);
686 if (sbi->ll_md_obd) {
687 err = sysfs_create_link(&sbi->ll_kset.kobj,
688 &sbi->ll_md_obd->obd_kset.kobj,
689 sbi->ll_md_obd->obd_type->typ_name);
691 CERROR("%s: could not register %s in llite: rc = %d\n",
692 md, sbi->ll_fsname, err);
702 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
704 obd_disconnect(sbi->ll_dt_exp);
705 sbi->ll_dt_exp = NULL;
706 sbi->ll_dt_obd = NULL;
708 obd_fid_fini(sbi->ll_md_exp->exp_obd);
710 obd_disconnect(sbi->ll_md_exp);
711 sbi->ll_md_exp = NULL;
712 sbi->ll_md_obd = NULL;
721 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
725 size = sizeof(*lmmsize);
726 rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
727 KEY_MAX_EASIZE, &size, lmmsize);
729 CERROR("%s: cannot get max LOV EA size: rc = %d\n",
730 sbi->ll_dt_exp->exp_obd->obd_name, rc);
734 CDEBUG(D_INFO, "max LOV ea size: %d\n", *lmmsize);
737 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
738 KEY_MAX_EASIZE, &size, lmmsize);
740 CERROR("Get max mdsize error rc %d\n", rc);
742 CDEBUG(D_INFO, "max LMV ea size: %d\n", *lmmsize);
748 * Get the value of the default_easize parameter.
750 * \see client_obd::cl_default_mds_easize
752 * \param[in] sbi superblock info for this filesystem
753 * \param[out] lmmsize pointer to storage location for value
755 * \retval 0 on success
756 * \retval negative negated errno on failure
758 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
763 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
764 KEY_DEFAULT_EASIZE, &size, lmmsize);
766 CERROR("Get default mdsize error rc %d\n", rc);
772 * Set the default_easize parameter to the given value.
774 * \see client_obd::cl_default_mds_easize
776 * \param[in] sbi superblock info for this filesystem
777 * \param[in] lmmsize the size to set
779 * \retval 0 on success
780 * \retval negative negated errno on failure
782 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
786 if (lmmsize < sizeof(struct lov_mds_md) ||
787 lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
790 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
791 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
792 sizeof(int), &lmmsize, NULL);
797 static void client_common_put_super(struct super_block *sb)
799 struct ll_sb_info *sbi = ll_s2sbi(sb);
804 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
805 obd_disconnect(sbi->ll_dt_exp);
806 sbi->ll_dt_exp = NULL;
808 ll_debugfs_unregister_super(sb);
810 obd_fid_fini(sbi->ll_md_exp->exp_obd);
811 obd_disconnect(sbi->ll_md_exp);
812 sbi->ll_md_exp = NULL;
817 void ll_kill_super(struct super_block *sb)
819 struct ll_sb_info *sbi;
823 if (!(sb->s_flags & SB_ACTIVE))
827 /* we need restore s_dev from changed for clustred NFS before put_super
828 * because new kernels have cached s_dev and change sb->s_dev in
829 * put_super not affected real removing devices */
831 sb->s_dev = sbi->ll_sdev_orig;
833 /* wait running statahead threads to quit */
834 while (atomic_read(&sbi->ll_sa_running) > 0)
835 schedule_timeout_uninterruptible(
836 cfs_time_seconds(1) >> 3);
842 static inline int ll_set_opt(const char *opt, char *data, int fl)
844 if (strncmp(opt, data, strlen(opt)) != 0)
850 /* non-client-specific mount options are parsed in lmd_parse */
851 static int ll_options(char *options, struct ll_sb_info *sbi)
854 char *s1 = options, *s2;
855 int *flags = &sbi->ll_flags;
861 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
864 CDEBUG(D_SUPER, "next opt=%s\n", s1);
865 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
870 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
872 *flags = (*flags & ~LL_SBI_LOCALFLOCK) | tmp;
875 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
877 *flags = (*flags & ~LL_SBI_FLOCK) | tmp;
880 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
885 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
890 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
895 tmp = ll_set_opt("context", s1, 1);
898 tmp = ll_set_opt("fscontext", s1, 1);
901 tmp = ll_set_opt("defcontext", s1, 1);
904 tmp = ll_set_opt("rootcontext", s1, 1);
907 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
912 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
918 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
921 sbi->ll_checksum_set = 1;
924 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
927 sbi->ll_checksum_set = 1;
930 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
935 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
940 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
945 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
950 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
955 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
960 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
965 tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
970 tmp = ll_set_opt("test_dummy_encryption", s1,
971 LL_SBI_TEST_DUMMY_ENCRYPTION);
973 #ifdef HAVE_LUSTRE_CRYPTO
976 LCONSOLE_WARN("Test dummy encryption mount option ignored: encryption not supported\n");
980 tmp = ll_set_opt("noencrypt", s1, LL_SBI_ENCRYPT);
982 #ifdef HAVE_LUSTRE_CRYPTO
985 LCONSOLE_WARN("noencrypt mount option ignored: encryption not supported\n");
989 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
995 s2 = strchr(s1, ',');
1003 void ll_lli_init(struct ll_inode_info *lli)
1005 lli->lli_inode_magic = LLI_INODE_MAGIC;
1007 spin_lock_init(&lli->lli_lock);
1008 lli->lli_posix_acl = NULL;
1009 /* Do not set lli_fid, it has been initialized already. */
1010 fid_zero(&lli->lli_pfid);
1011 lli->lli_mds_read_och = NULL;
1012 lli->lli_mds_write_och = NULL;
1013 lli->lli_mds_exec_och = NULL;
1014 lli->lli_open_fd_read_count = 0;
1015 lli->lli_open_fd_write_count = 0;
1016 lli->lli_open_fd_exec_count = 0;
1017 mutex_init(&lli->lli_och_mutex);
1018 spin_lock_init(&lli->lli_agl_lock);
1019 spin_lock_init(&lli->lli_layout_lock);
1020 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
1021 lli->lli_clob = NULL;
1023 init_rwsem(&lli->lli_xattrs_list_rwsem);
1024 mutex_init(&lli->lli_xattrs_enq_lock);
1026 LASSERT(lli->lli_vfs_inode.i_mode != 0);
1027 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
1028 lli->lli_opendir_key = NULL;
1029 lli->lli_sai = NULL;
1030 spin_lock_init(&lli->lli_sa_lock);
1031 lli->lli_opendir_pid = 0;
1032 lli->lli_sa_enabled = 0;
1033 init_rwsem(&lli->lli_lsm_sem);
1035 mutex_init(&lli->lli_size_mutex);
1036 mutex_init(&lli->lli_setattr_mutex);
1037 lli->lli_symlink_name = NULL;
1038 ll_trunc_sem_init(&lli->lli_trunc_sem);
1039 range_lock_tree_init(&lli->lli_write_tree);
1040 init_rwsem(&lli->lli_glimpse_sem);
1041 lli->lli_glimpse_time = ktime_set(0, 0);
1042 INIT_LIST_HEAD(&lli->lli_agl_list);
1043 lli->lli_agl_index = 0;
1044 lli->lli_async_rc = 0;
1045 spin_lock_init(&lli->lli_heat_lock);
1046 obd_heat_clear(lli->lli_heat_instances, OBD_HEAT_COUNT);
1047 lli->lli_heat_flags = 0;
1048 mutex_init(&lli->lli_pcc_lock);
1049 lli->lli_pcc_state = PCC_STATE_FL_NONE;
1050 lli->lli_pcc_inode = NULL;
1051 lli->lli_pcc_dsflags = PCC_DATASET_INVALID;
1052 lli->lli_pcc_generation = 0;
1053 mutex_init(&lli->lli_group_mutex);
1054 lli->lli_group_users = 0;
1055 lli->lli_group_gid = 0;
1057 mutex_init(&lli->lli_layout_mutex);
1058 memset(lli->lli_jobid, 0, sizeof(lli->lli_jobid));
1061 #define MAX_STRING_SIZE 128
1063 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1065 #define LSI_BDI_INITIALIZED 0x00400000
1067 #ifndef HAVE_BDI_CAP_MAP_COPY
1068 # define BDI_CAP_MAP_COPY 0
1071 static int super_setup_bdi_name(struct super_block *sb, char *fmt, ...)
1073 struct lustre_sb_info *lsi = s2lsi(sb);
1074 char buf[MAX_STRING_SIZE];
1078 err = bdi_init(&lsi->lsi_bdi);
1082 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1083 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1084 lsi->lsi_bdi.name = "lustre";
1085 va_start(args, fmt);
1086 vsnprintf(buf, MAX_STRING_SIZE, fmt, args);
1088 err = bdi_register(&lsi->lsi_bdi, NULL, "%s", buf);
1091 sb->s_bdi = &lsi->lsi_bdi;
1095 #endif /* !HAVE_SUPER_SETUP_BDI_NAME */
1097 int ll_fill_super(struct super_block *sb)
1099 struct lustre_profile *lprof = NULL;
1100 struct lustre_sb_info *lsi = s2lsi(sb);
1101 struct ll_sb_info *sbi = NULL;
1102 char *dt = NULL, *md = NULL;
1103 char *profilenm = get_profile_name(sb);
1104 struct config_llog_instance *cfg;
1105 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1106 const int instlen = LUSTRE_MAXINSTANCE + 2;
1107 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1108 char name[MAX_STRING_SIZE];
1117 /* for ASLR, to map between cfg_instance and hashed ptr */
1118 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1119 profilenm, cfg_instance, sb);
1123 GOTO(out_free_cfg, err = -ENOMEM);
1125 /* client additional sb info */
1126 lsi->lsi_llsbi = sbi = ll_init_sbi();
1128 GOTO(out_free_cfg, err = PTR_ERR(sbi));
1130 err = ll_options(lsi->lsi_lmd->lmd_opts, sbi);
1132 GOTO(out_free_cfg, err);
1134 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1135 sb->s_d_op = &ll_d_ops;
1138 generate_random_uuid(uuid.b);
1139 snprintf(sbi->ll_sb_uuid.uuid, sizeof(sbi->ll_sb_uuid), "%pU", uuid.b);
1141 CDEBUG(D_CONFIG, "llite sb uuid: %s\n", sbi->ll_sb_uuid.uuid);
1144 len = strlen(profilenm);
1145 ptr = strrchr(profilenm, '-');
1146 if (ptr && (strcmp(ptr, "-client") == 0))
1149 if (len > LUSTRE_MAXFSNAME) {
1150 if (unlikely(len >= MAX_STRING_SIZE))
1151 len = MAX_STRING_SIZE - 1;
1152 strncpy(name, profilenm, len);
1154 err = -ENAMETOOLONG;
1155 CERROR("%s: fsname longer than %u characters: rc = %d\n",
1156 name, LUSTRE_MAXFSNAME, err);
1157 GOTO(out_free_cfg, err);
1159 strncpy(sbi->ll_fsname, profilenm, len);
1160 sbi->ll_fsname[len] = '\0';
1163 snprintf(name, sizeof(name), "%.*s-%016lx", len,
1164 profilenm, cfg_instance);
1166 err = super_setup_bdi_name(sb, "%s", name);
1168 GOTO(out_free_cfg, err);
1170 /* Call ll_debugfs_register_super() before lustre_process_log()
1171 * so that "llite.*.*" params can be processed correctly.
1173 err = ll_debugfs_register_super(sb, name);
1175 CERROR("%s: could not register mountpoint in llite: rc = %d\n",
1176 sbi->ll_fsname, err);
1180 /* The cfg_instance is a value unique to this super, in case some
1181 * joker tries to mount the same fs at two mount points.
1183 cfg->cfg_instance = cfg_instance;
1184 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1185 cfg->cfg_callback = class_config_llog_handler;
1186 cfg->cfg_sub_clds = CONFIG_SUB_CLIENT;
1187 /* set up client obds */
1188 err = lustre_process_log(sb, profilenm, cfg);
1190 GOTO(out_debugfs, err);
1192 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1193 lprof = class_get_profile(profilenm);
1194 if (lprof == NULL) {
1195 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1196 " read from the MGS. Does that filesystem "
1197 "exist?\n", profilenm);
1198 GOTO(out_debugfs, err = -EINVAL);
1200 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1201 lprof->lp_md, lprof->lp_dt);
1203 dt_len = strlen(lprof->lp_dt) + instlen + 2;
1204 OBD_ALLOC(dt, dt_len);
1206 GOTO(out_profile, err = -ENOMEM);
1207 snprintf(dt, dt_len - 1, "%s-%016lx", lprof->lp_dt, cfg_instance);
1209 md_len = strlen(lprof->lp_md) + instlen + 2;
1210 OBD_ALLOC(md, md_len);
1212 GOTO(out_free_dt, err = -ENOMEM);
1213 snprintf(md, md_len - 1, "%s-%016lx", lprof->lp_md, cfg_instance);
1215 /* connections, registrations, sb setup */
1216 err = client_common_fill_super(sb, md, dt);
1218 GOTO(out_free_md, err);
1220 sbi->ll_client_common_fill_super_succeeded = 1;
1224 OBD_FREE(md, md_len);
1227 OBD_FREE(dt, dt_len);
1230 class_put_profile(lprof);
1233 ll_debugfs_unregister_super(sb);
1240 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1241 LCONSOLE_WARN("Mounted %s\n", profilenm);
1243 } /* ll_fill_super */
1245 void ll_put_super(struct super_block *sb)
1247 struct config_llog_instance cfg, params_cfg;
1248 struct obd_device *obd;
1249 struct lustre_sb_info *lsi = s2lsi(sb);
1250 struct ll_sb_info *sbi = ll_s2sbi(sb);
1251 char *profilenm = get_profile_name(sb);
1252 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1254 int next, force = 1, rc = 0;
1258 GOTO(out_no_sbi, 0);
1260 /* Should replace instance_id with something better for ASLR */
1261 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1262 profilenm, cfg_instance, sb);
1264 cfg.cfg_instance = cfg_instance;
1265 lustre_end_log(sb, profilenm, &cfg);
1267 params_cfg.cfg_instance = cfg_instance;
1268 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1270 if (sbi->ll_md_exp) {
1271 obd = class_exp2obd(sbi->ll_md_exp);
1273 force = obd->obd_force;
1276 /* Wait for unstable pages to be committed to stable storage */
1278 rc = l_wait_event_abortable(
1279 sbi->ll_cache->ccc_unstable_waitq,
1280 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0);
1283 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1284 if (force == 0 && rc != -ERESTARTSYS)
1285 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1287 /* We need to set force before the lov_disconnect in
1288 * lustre_common_put_super, since l_d cleans up osc's as well.
1292 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1294 obd->obd_force = force;
1298 if (sbi->ll_client_common_fill_super_succeeded) {
1299 /* Only if client_common_fill_super succeeded */
1300 client_common_put_super(sb);
1304 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)))
1305 class_manual_cleanup(obd);
1307 if (sbi->ll_flags & LL_SBI_VERBOSE)
1308 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1311 class_del_profile(profilenm);
1313 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1314 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1315 bdi_destroy(&lsi->lsi_bdi);
1316 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1321 lsi->lsi_llsbi = NULL;
1323 lustre_common_put_super(sb);
1325 cl_env_cache_purge(~0);
1327 module_put(THIS_MODULE);
1330 } /* client_put_super */
1332 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1334 struct inode *inode = NULL;
1336 /* NOTE: we depend on atomic igrab() -bzzz */
1337 lock_res_and_lock(lock);
1338 if (lock->l_resource->lr_lvb_inode) {
1339 struct ll_inode_info * lli;
1340 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1341 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1342 inode = igrab(lock->l_resource->lr_lvb_inode);
1344 inode = lock->l_resource->lr_lvb_inode;
1345 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1346 D_WARNING, lock, "lr_lvb_inode %p is "
1347 "bogus: magic %08x",
1348 lock->l_resource->lr_lvb_inode,
1349 lli->lli_inode_magic);
1353 unlock_res_and_lock(lock);
1357 void ll_dir_clear_lsm_md(struct inode *inode)
1359 struct ll_inode_info *lli = ll_i2info(inode);
1361 LASSERT(S_ISDIR(inode->i_mode));
1363 if (lli->lli_lsm_md) {
1364 lmv_free_memmd(lli->lli_lsm_md);
1365 lli->lli_lsm_md = NULL;
1368 if (lli->lli_default_lsm_md) {
1369 lmv_free_memmd(lli->lli_default_lsm_md);
1370 lli->lli_default_lsm_md = NULL;
1374 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1375 const struct lu_fid *fid,
1376 struct lustre_md *md)
1378 struct ll_sb_info *sbi = ll_s2sbi(sb);
1379 struct mdt_body *body = md->body;
1380 struct inode *inode;
1384 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1385 inode = iget_locked(sb, ino);
1386 if (inode == NULL) {
1387 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1388 sbi->ll_fsname, PFID(fid));
1389 RETURN(ERR_PTR(-ENOENT));
1392 if (inode->i_state & I_NEW) {
1393 struct ll_inode_info *lli = ll_i2info(inode);
1394 struct lmv_stripe_md *lsm = md->lmv;
1396 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1397 (body->mbo_mode & S_IFMT);
1398 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1401 inode->i_mtime.tv_sec = 0;
1402 inode->i_atime.tv_sec = 0;
1403 inode->i_ctime.tv_sec = 0;
1406 #ifdef HAVE_BACKING_DEV_INFO
1407 /* initializing backing dev info. */
1408 inode->i_mapping->backing_dev_info =
1409 &s2lsi(inode->i_sb)->lsi_bdi;
1411 inode->i_op = &ll_dir_inode_operations;
1412 inode->i_fop = &ll_dir_operations;
1413 lli->lli_fid = *fid;
1416 LASSERT(lsm != NULL);
1417 /* master object FID */
1418 lli->lli_pfid = body->mbo_fid1;
1419 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1420 lli, PFID(fid), PFID(&lli->lli_pfid));
1421 unlock_new_inode(inode);
1427 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1430 struct lmv_stripe_md *lsm = md->lmv;
1431 struct ll_inode_info *lli = ll_i2info(inode);
1434 LASSERT(lsm != NULL);
1436 CDEBUG(D_INODE, "%s: "DFID" set dir layout:\n",
1437 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1438 lsm_md_dump(D_INODE, lsm);
1440 if (!lmv_dir_striped(lsm))
1443 /* XXX sigh, this lsm_root initialization should be in
1444 * LMV layer, but it needs ll_iget right now, so we
1445 * put this here right now. */
1446 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1447 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1448 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1450 if (!fid_is_sane(fid))
1453 /* Unfortunately ll_iget will call ll_update_inode,
1454 * where the initialization of slave inode is slightly
1455 * different, so it reset lsm_md to NULL to avoid
1456 * initializing lsm for slave inode. */
1457 lsm->lsm_md_oinfo[i].lmo_root =
1458 ll_iget_anon_dir(inode->i_sb, fid, md);
1459 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1460 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1462 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1464 iput(lsm->lsm_md_oinfo[i].lmo_root);
1465 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1471 lli->lli_lsm_md = lsm;
1476 static void ll_update_default_lsm_md(struct inode *inode, struct lustre_md *md)
1478 struct ll_inode_info *lli = ll_i2info(inode);
1480 if (!md->default_lmv) {
1481 /* clear default lsm */
1482 if (lli->lli_default_lsm_md) {
1483 down_write(&lli->lli_lsm_sem);
1484 if (lli->lli_default_lsm_md) {
1485 lmv_free_memmd(lli->lli_default_lsm_md);
1486 lli->lli_default_lsm_md = NULL;
1488 up_write(&lli->lli_lsm_sem);
1490 } else if (lli->lli_default_lsm_md) {
1491 /* update default lsm if it changes */
1492 down_read(&lli->lli_lsm_sem);
1493 if (lli->lli_default_lsm_md &&
1494 !lsm_md_eq(lli->lli_default_lsm_md, md->default_lmv)) {
1495 up_read(&lli->lli_lsm_sem);
1496 down_write(&lli->lli_lsm_sem);
1497 if (lli->lli_default_lsm_md)
1498 lmv_free_memmd(lli->lli_default_lsm_md);
1499 lli->lli_default_lsm_md = md->default_lmv;
1500 lsm_md_dump(D_INODE, md->default_lmv);
1501 md->default_lmv = NULL;
1502 up_write(&lli->lli_lsm_sem);
1504 up_read(&lli->lli_lsm_sem);
1507 /* init default lsm */
1508 down_write(&lli->lli_lsm_sem);
1509 lli->lli_default_lsm_md = md->default_lmv;
1510 lsm_md_dump(D_INODE, md->default_lmv);
1511 md->default_lmv = NULL;
1512 up_write(&lli->lli_lsm_sem);
1516 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1518 struct ll_inode_info *lli = ll_i2info(inode);
1519 struct lmv_stripe_md *lsm = md->lmv;
1520 struct cl_attr *attr;
1525 LASSERT(S_ISDIR(inode->i_mode));
1526 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1527 PFID(ll_inode2fid(inode)));
1529 /* update default LMV */
1530 if (md->default_lmv)
1531 ll_update_default_lsm_md(inode, md);
1534 * no striped information from request, lustre_md from req does not
1535 * include stripeEA, see ll_md_setattr()
1541 * normally dir layout doesn't change, only take read lock to check
1542 * that to avoid blocking other MD operations.
1544 down_read(&lli->lli_lsm_sem);
1546 /* some current lookup initialized lsm, and unchanged */
1547 if (lli->lli_lsm_md && lsm_md_eq(lli->lli_lsm_md, lsm))
1548 GOTO(unlock, rc = 0);
1550 /* if dir layout doesn't match, check whether version is increased,
1551 * which means layout is changed, this happens in dir split/merge and
1554 * foreign LMV should not change.
1556 if (lli->lli_lsm_md && lmv_dir_striped(lli->lli_lsm_md) &&
1557 lsm->lsm_md_layout_version <=
1558 lli->lli_lsm_md->lsm_md_layout_version) {
1559 CERROR("%s: "DFID" dir layout mismatch:\n",
1560 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1561 lsm_md_dump(D_ERROR, lli->lli_lsm_md);
1562 lsm_md_dump(D_ERROR, lsm);
1563 GOTO(unlock, rc = -EINVAL);
1566 up_read(&lli->lli_lsm_sem);
1567 down_write(&lli->lli_lsm_sem);
1568 /* clear existing lsm */
1569 if (lli->lli_lsm_md) {
1570 lmv_free_memmd(lli->lli_lsm_md);
1571 lli->lli_lsm_md = NULL;
1574 rc = ll_init_lsm_md(inode, md);
1575 up_write(&lli->lli_lsm_sem);
1580 /* set md->lmv to NULL, so the following free lustre_md will not free
1585 /* md_merge_attr() may take long, since lsm is already set, switch to
1588 down_read(&lli->lli_lsm_sem);
1590 if (!lmv_dir_striped(lli->lli_lsm_md))
1591 GOTO(unlock, rc = 0);
1593 OBD_ALLOC_PTR(attr);
1595 GOTO(unlock, rc = -ENOMEM);
1597 /* validate the lsm */
1598 rc = md_merge_attr(ll_i2mdexp(inode), &lli->lli_fid, lli->lli_lsm_md,
1599 attr, ll_md_blocking_ast);
1601 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1602 md->body->mbo_nlink = attr->cat_nlink;
1603 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1604 md->body->mbo_size = attr->cat_size;
1605 if (md->body->mbo_valid & OBD_MD_FLATIME)
1606 md->body->mbo_atime = attr->cat_atime;
1607 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1608 md->body->mbo_ctime = attr->cat_ctime;
1609 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1610 md->body->mbo_mtime = attr->cat_mtime;
1616 up_read(&lli->lli_lsm_sem);
1621 void ll_clear_inode(struct inode *inode)
1623 struct ll_inode_info *lli = ll_i2info(inode);
1624 struct ll_sb_info *sbi = ll_i2sbi(inode);
1628 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1629 PFID(ll_inode2fid(inode)), inode);
1631 if (S_ISDIR(inode->i_mode)) {
1632 /* these should have been cleared in ll_file_release */
1633 LASSERT(lli->lli_opendir_key == NULL);
1634 LASSERT(lli->lli_sai == NULL);
1635 LASSERT(lli->lli_opendir_pid == 0);
1637 pcc_inode_free(inode);
1640 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1642 LASSERT(!lli->lli_open_fd_write_count);
1643 LASSERT(!lli->lli_open_fd_read_count);
1644 LASSERT(!lli->lli_open_fd_exec_count);
1646 if (lli->lli_mds_write_och)
1647 ll_md_real_close(inode, FMODE_WRITE);
1648 if (lli->lli_mds_exec_och)
1649 ll_md_real_close(inode, FMODE_EXEC);
1650 if (lli->lli_mds_read_och)
1651 ll_md_real_close(inode, FMODE_READ);
1653 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1654 OBD_FREE(lli->lli_symlink_name,
1655 strlen(lli->lli_symlink_name) + 1);
1656 lli->lli_symlink_name = NULL;
1659 ll_xattr_cache_destroy(inode);
1661 forget_all_cached_acls(inode);
1663 lli->lli_inode_magic = LLI_INODE_DEAD;
1665 if (S_ISDIR(inode->i_mode))
1666 ll_dir_clear_lsm_md(inode);
1667 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1668 LASSERT(list_empty(&lli->lli_agl_list));
1671 * XXX This has to be done before lsm is freed below, because
1672 * cl_object still uses inode lsm.
1674 cl_inode_fini(inode);
1676 llcrypt_put_encryption_info(inode);
1681 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1683 struct lustre_md md;
1684 struct inode *inode = dentry->d_inode;
1685 struct ll_sb_info *sbi = ll_i2sbi(inode);
1686 struct ptlrpc_request *request = NULL;
1690 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1691 LUSTRE_OPC_ANY, NULL);
1692 if (IS_ERR(op_data))
1693 RETURN(PTR_ERR(op_data));
1695 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1697 ptlrpc_req_finished(request);
1698 if (rc == -ENOENT) {
1700 /* Unlinked special device node? Or just a race?
1701 * Pretend we done everything. */
1702 if (!S_ISREG(inode->i_mode) &&
1703 !S_ISDIR(inode->i_mode)) {
1704 ia_valid = op_data->op_attr.ia_valid;
1705 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1706 rc = simple_setattr(dentry, &op_data->op_attr);
1707 op_data->op_attr.ia_valid = ia_valid;
1709 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1710 CERROR("md_setattr fails: rc = %d\n", rc);
1715 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1716 sbi->ll_md_exp, &md);
1718 ptlrpc_req_finished(request);
1722 ia_valid = op_data->op_attr.ia_valid;
1723 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1724 * cache is not cleared yet. */
1725 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1726 if (S_ISREG(inode->i_mode))
1728 rc = simple_setattr(dentry, &op_data->op_attr);
1729 if (S_ISREG(inode->i_mode))
1730 inode_unlock(inode);
1731 op_data->op_attr.ia_valid = ia_valid;
1733 rc = ll_update_inode(inode, &md);
1734 ptlrpc_req_finished(request);
1740 * Zero portion of page that is part of @inode.
1741 * This implies, if necessary:
1742 * - taking cl_lock on range corresponding to concerned page
1743 * - grabbing vm page
1744 * - associating cl_page
1745 * - proceeding to clio read
1746 * - zeroing range in page
1747 * - proceeding to cl_page flush
1748 * - releasing cl_lock
1750 * \param[in] inode inode
1751 * \param[in] index page index
1752 * \param[in] offset offset in page to start zero from
1753 * \param[in] len len to zero
1755 * \retval 0 on success
1756 * \retval negative errno on failure
1758 int ll_io_zero_page(struct inode *inode, pgoff_t index, pgoff_t offset,
1761 struct ll_inode_info *lli = ll_i2info(inode);
1762 struct cl_object *clob = lli->lli_clob;
1764 struct lu_env *env = NULL;
1765 struct cl_io *io = NULL;
1766 struct cl_page *clpage = NULL;
1767 struct page *vmpage = NULL;
1768 unsigned from = index << PAGE_SHIFT;
1769 struct cl_lock *lock = NULL;
1770 struct cl_lock_descr *descr = NULL;
1771 struct cl_2queue *queue = NULL;
1772 struct cl_sync_io *anchor = NULL;
1773 bool holdinglock = false;
1774 bool lockedbymyself = true;
1779 env = cl_env_get(&refcheck);
1781 RETURN(PTR_ERR(env));
1783 io = vvp_env_thread_io(env);
1785 rc = cl_io_rw_init(env, io, CIT_WRITE, from, PAGE_SIZE);
1789 lock = vvp_env_lock(env);
1790 descr = &lock->cll_descr;
1791 descr->cld_obj = io->ci_obj;
1792 descr->cld_start = cl_index(io->ci_obj, from);
1793 descr->cld_end = cl_index(io->ci_obj, from + PAGE_SIZE - 1);
1794 descr->cld_mode = CLM_WRITE;
1795 descr->cld_enq_flags = CEF_MUST | CEF_NONBLOCK;
1797 /* request lock for page */
1798 rc = cl_lock_request(env, io, lock);
1799 /* -ECANCELED indicates a matching lock with a different extent
1800 * was already present, and -EEXIST indicates a matching lock
1801 * on exactly the same extent was already present.
1802 * In both cases it means we are covered.
1804 if (rc == -ECANCELED || rc == -EEXIST)
1812 vmpage = grab_cache_page_nowait(inode->i_mapping, index);
1814 GOTO(rellock, rc = -EOPNOTSUPP);
1816 if (!PageDirty(vmpage)) {
1817 /* associate cl_page */
1818 clpage = cl_page_find(env, clob, vmpage->index,
1819 vmpage, CPT_CACHEABLE);
1821 GOTO(pagefini, rc = PTR_ERR(clpage));
1823 cl_page_assume(env, io, clpage);
1826 if (!PageUptodate(vmpage) && !PageDirty(vmpage) &&
1827 !PageWriteback(vmpage)) {
1829 /* set PagePrivate2 to detect special case of empty page
1830 * in osc_brw_fini_request()
1832 SetPagePrivate2(vmpage);
1833 rc = ll_io_read_page(env, io, clpage, NULL);
1834 if (!PagePrivate2(vmpage))
1835 /* PagePrivate2 was cleared in osc_brw_fini_request()
1836 * meaning we read an empty page. In this case, in order
1837 * to avoid allocating unnecessary block in truncated
1838 * file, we must not zero and write as below. Subsequent
1839 * server-side truncate will handle things correctly.
1841 GOTO(clpfini, rc = 0);
1842 ClearPagePrivate2(vmpage);
1845 lockedbymyself = trylock_page(vmpage);
1846 cl_page_assume(env, io, clpage);
1849 /* zero range in page */
1850 zero_user(vmpage, offset, len);
1852 if (holdinglock && clpage) {
1853 /* explicitly write newly modified page */
1854 queue = &io->ci_queue;
1855 cl_2queue_init(queue);
1856 anchor = &vvp_env_info(env)->vti_anchor;
1857 cl_sync_io_init(anchor, 1);
1858 clpage->cp_sync_io = anchor;
1859 cl_2queue_add(queue, clpage);
1860 rc = cl_io_submit_rw(env, io, CRT_WRITE, queue);
1862 GOTO(queuefini1, rc);
1863 rc = cl_sync_io_wait(env, anchor, 0);
1865 GOTO(queuefini2, rc);
1866 cl_page_assume(env, io, clpage);
1869 cl_2queue_discard(env, io, queue);
1871 cl_2queue_disown(env, io, queue);
1872 cl_2queue_fini(env, queue);
1877 cl_page_put(env, clpage);
1879 if (lockedbymyself) {
1880 unlock_page(vmpage);
1885 cl_lock_release(env, lock);
1887 cl_io_fini(env, io);
1890 cl_env_put(env, &refcheck);
1895 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1896 * object(s) determine the file size and mtime. Otherwise, the MDS will
1897 * keep these values until such a time that objects are allocated for it.
1898 * We do the MDS operations first, as it is checking permissions for us.
1899 * We don't to the MDS RPC if there is nothing that we want to store there,
1900 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1901 * going to do an RPC anyways.
1903 * If we are doing a truncate, we will send the mtime and ctime updates
1904 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1905 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1908 * In case of HSMimport, we only set attr on MDS.
1910 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr,
1911 enum op_xvalid xvalid, bool hsm_import)
1913 struct inode *inode = dentry->d_inode;
1914 struct ll_inode_info *lli = ll_i2info(inode);
1915 struct md_op_data *op_data = NULL;
1916 ktime_t kstart = ktime_get();
1921 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1922 "valid %x, hsm_import %d\n",
1923 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid),
1924 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1927 if (attr->ia_valid & ATTR_SIZE) {
1928 /* Check new size against VFS/VM file size limit and rlimit */
1929 rc = inode_newsize_ok(inode, attr->ia_size);
1933 /* The maximum Lustre file size is variable, based on the
1934 * OST maximum object size and number of stripes. This
1935 * needs another check in addition to the VFS check above. */
1936 if (attr->ia_size > ll_file_maxbytes(inode)) {
1937 CDEBUG(D_INODE,"file "DFID" too large %llu > %llu\n",
1938 PFID(&lli->lli_fid), attr->ia_size,
1939 ll_file_maxbytes(inode));
1943 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1946 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1947 if (attr->ia_valid & TIMES_SET_FLAGS) {
1948 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1949 !cfs_capable(CFS_CAP_FOWNER))
1953 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1954 if (!(xvalid & OP_XVALID_CTIME_SET) &&
1955 (attr->ia_valid & ATTR_CTIME)) {
1956 attr->ia_ctime = current_time(inode);
1957 xvalid |= OP_XVALID_CTIME_SET;
1959 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1960 (attr->ia_valid & ATTR_ATIME)) {
1961 attr->ia_atime = current_time(inode);
1962 attr->ia_valid |= ATTR_ATIME_SET;
1964 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1965 (attr->ia_valid & ATTR_MTIME)) {
1966 attr->ia_mtime = current_time(inode);
1967 attr->ia_valid |= ATTR_MTIME_SET;
1970 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1971 CDEBUG(D_INODE, "setting mtime %lld, ctime %lld, now = %lld\n",
1972 (s64)attr->ia_mtime.tv_sec, (s64)attr->ia_ctime.tv_sec,
1973 ktime_get_real_seconds());
1975 if (S_ISREG(inode->i_mode))
1976 inode_unlock(inode);
1978 /* We always do an MDS RPC, even if we're only changing the size;
1979 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1981 OBD_ALLOC_PTR(op_data);
1982 if (op_data == NULL)
1983 GOTO(out, rc = -ENOMEM);
1985 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1986 /* If we are changing file size, file content is
1987 * modified, flag it.
1989 xvalid |= OP_XVALID_OWNEROVERRIDE;
1990 op_data->op_bias |= MDS_DATA_MODIFIED;
1991 ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
1994 if (attr->ia_valid & ATTR_FILE) {
1995 struct ll_file_data *fd = attr->ia_file->private_data;
1997 if (fd->fd_lease_och)
1998 op_data->op_bias |= MDS_TRUNC_KEEP_LEASE;
2001 op_data->op_attr = *attr;
2002 op_data->op_xvalid = xvalid;
2004 rc = ll_md_setattr(dentry, op_data);
2008 if (!S_ISREG(inode->i_mode) || hsm_import)
2011 if (attr->ia_valid & (ATTR_SIZE | ATTR_ATIME | ATTR_ATIME_SET |
2012 ATTR_MTIME | ATTR_MTIME_SET | ATTR_CTIME) ||
2013 xvalid & OP_XVALID_CTIME_SET) {
2014 bool cached = false;
2016 rc = pcc_inode_setattr(inode, attr, &cached);
2019 CERROR("%s: PCC inode "DFID" setattr failed: "
2021 ll_i2sbi(inode)->ll_fsname,
2022 PFID(&lli->lli_fid), rc);
2026 unsigned int flags = 0;
2028 /* For truncate and utimes sending attributes to OSTs,
2029 * setting mtime/atime to the past will be performed
2030 * under PW [0:EOF] extent lock (new_size:EOF for
2031 * truncate). It may seem excessive to send mtime/atime
2032 * updates to OSTs when not setting times to past, but
2033 * it is necessary due to possible time
2034 * de-synchronization between MDT inode and OST objects
2036 if (S_ISREG(inode->i_mode) && IS_ENCRYPTED(inode) &&
2037 attr->ia_valid & ATTR_SIZE) {
2038 xvalid |= OP_XVALID_FLAGS;
2039 flags = LUSTRE_ENCRYPT_FL;
2040 /* Call to ll_io_zero_page is not necessary if
2041 * truncating on PAGE_SIZE boundary, because
2042 * whole pages will be wiped.
2043 * In case of Direct IO, all we need is to set
2046 if (attr->ia_size & ~PAGE_MASK &&
2047 !(attr->ia_valid & ATTR_FILE &&
2048 attr->ia_file->f_flags & O_DIRECT)) {
2050 attr->ia_size & (PAGE_SIZE - 1);
2052 rc = ll_io_zero_page(inode,
2053 attr->ia_size >> PAGE_SHIFT,
2054 offset, PAGE_SIZE - offset);
2059 rc = cl_setattr_ost(lli->lli_clob, attr, xvalid, flags);
2063 /* If the file was restored, it needs to set dirty flag.
2065 * We've already sent MDS_DATA_MODIFIED flag in
2066 * ll_md_setattr() for truncate. However, the MDT refuses to
2067 * set the HS_DIRTY flag on released files, so we have to set
2068 * it again if the file has been restored. Please check how
2069 * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
2071 * Please notice that if the file is not released, the previous
2072 * MDS_DATA_MODIFIED has taken effect and usually
2073 * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
2074 * This way we can save an RPC for common open + trunc
2076 if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
2077 struct hsm_state_set hss = {
2078 .hss_valid = HSS_SETMASK,
2079 .hss_setmask = HS_DIRTY,
2083 rc2 = ll_hsm_state_set(inode, &hss);
2084 /* truncate and write can happen at the same time, so that
2085 * the file can be set modified even though the file is not
2086 * restored from released state, and ll_hsm_state_set() is
2087 * not applicable for the file, and rc2 < 0 is normal in this
2090 CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
2091 PFID(ll_inode2fid(inode)), rc2);
2096 if (op_data != NULL)
2097 ll_finish_md_op_data(op_data);
2099 if (S_ISREG(inode->i_mode)) {
2101 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
2102 inode_dio_wait(inode);
2103 /* Once we've got the i_mutex, it's safe to set the S_NOSEC
2104 * flag. ll_update_inode (called from ll_md_setattr), clears
2105 * inode flags, so there is a gap where S_NOSEC is not set.
2106 * This can cause a writer to take the i_mutex unnecessarily,
2107 * but this is safe to do and should be rare. */
2108 inode_has_no_xattr(inode);
2112 ll_stats_ops_tally(ll_i2sbi(inode), attr->ia_valid & ATTR_SIZE ?
2113 LPROC_LL_TRUNC : LPROC_LL_SETATTR,
2114 ktime_us_delta(ktime_get(), kstart));
2119 int ll_setattr(struct dentry *de, struct iattr *attr)
2121 int mode = de->d_inode->i_mode;
2122 enum op_xvalid xvalid = 0;
2125 rc = llcrypt_prepare_setattr(de, attr);
2129 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
2130 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
2131 xvalid |= OP_XVALID_OWNEROVERRIDE;
2133 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
2134 (ATTR_SIZE|ATTR_MODE)) &&
2135 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
2136 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
2137 !(attr->ia_mode & S_ISGID))))
2138 attr->ia_valid |= ATTR_FORCE;
2140 if ((attr->ia_valid & ATTR_MODE) &&
2142 !(attr->ia_mode & S_ISUID) &&
2143 !(attr->ia_valid & ATTR_KILL_SUID))
2144 attr->ia_valid |= ATTR_KILL_SUID;
2146 if ((attr->ia_valid & ATTR_MODE) &&
2147 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
2148 !(attr->ia_mode & S_ISGID) &&
2149 !(attr->ia_valid & ATTR_KILL_SGID))
2150 attr->ia_valid |= ATTR_KILL_SGID;
2152 return ll_setattr_raw(de, attr, xvalid, false);
2155 int ll_statfs_internal(struct ll_sb_info *sbi, struct obd_statfs *osfs,
2158 struct obd_statfs obd_osfs = { 0 };
2163 max_age = ktime_get_seconds() - sbi->ll_statfs_max_age;
2165 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2166 flags |= OBD_STATFS_NODELAY;
2168 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
2172 osfs->os_type = LL_SUPER_MAGIC;
2174 CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
2175 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree, osfs->os_files);
2177 if (osfs->os_state & OS_STATFS_SUM)
2180 rc = obd_statfs(NULL, sbi->ll_dt_exp, &obd_osfs, max_age, flags);
2181 if (rc) /* Possibly a filesystem with no OSTs. Report MDT totals. */
2184 CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
2185 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
2188 osfs->os_bsize = obd_osfs.os_bsize;
2189 osfs->os_blocks = obd_osfs.os_blocks;
2190 osfs->os_bfree = obd_osfs.os_bfree;
2191 osfs->os_bavail = obd_osfs.os_bavail;
2193 /* If we have _some_ OSTs, but don't have as many free objects on the
2194 * OSTs as inodes on the MDTs, reduce the reported number of inodes
2195 * to compensate, so that the "inodes in use" number is correct.
2196 * This should be kept in sync with lod_statfs() behaviour.
2198 if (obd_osfs.os_files && obd_osfs.os_ffree < osfs->os_ffree) {
2199 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
2201 osfs->os_ffree = obd_osfs.os_ffree;
2208 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
2210 struct super_block *sb = de->d_sb;
2211 struct obd_statfs osfs;
2212 __u64 fsid = huge_encode_dev(sb->s_dev);
2213 ktime_t kstart = ktime_get();
2216 CDEBUG(D_VFSTRACE, "VFS Op:sb=%s (%p)\n", sb->s_id, sb);
2218 /* Some amount of caching on the client is allowed */
2219 rc = ll_statfs_internal(ll_s2sbi(sb), &osfs, OBD_STATFS_SUM);
2223 statfs_unpack(sfs, &osfs);
2225 /* We need to downshift for all 32-bit kernels, because we can't
2226 * tell if the kernel is being called via sys_statfs64() or not.
2227 * Stop before overflowing f_bsize - in which case it is better
2228 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
2229 if (sizeof(long) < 8) {
2230 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
2233 osfs.os_blocks >>= 1;
2234 osfs.os_bfree >>= 1;
2235 osfs.os_bavail >>= 1;
2239 sfs->f_blocks = osfs.os_blocks;
2240 sfs->f_bfree = osfs.os_bfree;
2241 sfs->f_bavail = osfs.os_bavail;
2242 sfs->f_fsid.val[0] = (__u32)fsid;
2243 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
2245 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STATFS,
2246 ktime_us_delta(ktime_get(), kstart));
2251 void ll_inode_size_lock(struct inode *inode)
2253 struct ll_inode_info *lli;
2255 LASSERT(!S_ISDIR(inode->i_mode));
2257 lli = ll_i2info(inode);
2258 mutex_lock(&lli->lli_size_mutex);
2261 void ll_inode_size_unlock(struct inode *inode)
2263 struct ll_inode_info *lli;
2265 lli = ll_i2info(inode);
2266 mutex_unlock(&lli->lli_size_mutex);
2269 void ll_update_inode_flags(struct inode *inode, int ext_flags)
2271 /* do not clear encryption flag */
2272 ext_flags |= ll_inode_to_ext_flags(inode->i_flags) & LUSTRE_ENCRYPT_FL;
2273 inode->i_flags = ll_ext_to_inode_flags(ext_flags);
2274 if (ext_flags & LUSTRE_PROJINHERIT_FL)
2275 ll_file_set_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT);
2277 ll_file_clear_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT);
2280 int ll_update_inode(struct inode *inode, struct lustre_md *md)
2282 struct ll_inode_info *lli = ll_i2info(inode);
2283 struct mdt_body *body = md->body;
2284 struct ll_sb_info *sbi = ll_i2sbi(inode);
2287 if (body->mbo_valid & OBD_MD_FLEASIZE) {
2288 rc = cl_file_inode_init(inode, md);
2293 if (S_ISDIR(inode->i_mode)) {
2294 rc = ll_update_lsm_md(inode, md);
2299 if (body->mbo_valid & OBD_MD_FLACL)
2300 lli_replace_acl(lli, md);
2302 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
2303 sbi->ll_flags & LL_SBI_32BIT_API);
2304 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
2306 if (body->mbo_valid & OBD_MD_FLATIME) {
2307 if (body->mbo_atime > inode->i_atime.tv_sec)
2308 inode->i_atime.tv_sec = body->mbo_atime;
2309 lli->lli_atime = body->mbo_atime;
2312 if (body->mbo_valid & OBD_MD_FLMTIME) {
2313 if (body->mbo_mtime > inode->i_mtime.tv_sec) {
2315 "setting ino %lu mtime from %lld to %llu\n",
2316 inode->i_ino, (s64)inode->i_mtime.tv_sec,
2318 inode->i_mtime.tv_sec = body->mbo_mtime;
2320 lli->lli_mtime = body->mbo_mtime;
2323 if (body->mbo_valid & OBD_MD_FLCTIME) {
2324 if (body->mbo_ctime > inode->i_ctime.tv_sec)
2325 inode->i_ctime.tv_sec = body->mbo_ctime;
2326 lli->lli_ctime = body->mbo_ctime;
2329 if (body->mbo_valid & OBD_MD_FLBTIME)
2330 lli->lli_btime = body->mbo_btime;
2332 /* Clear i_flags to remove S_NOSEC before permissions are updated */
2333 if (body->mbo_valid & OBD_MD_FLFLAGS)
2334 ll_update_inode_flags(inode, body->mbo_flags);
2335 if (body->mbo_valid & OBD_MD_FLMODE)
2336 inode->i_mode = (inode->i_mode & S_IFMT) |
2337 (body->mbo_mode & ~S_IFMT);
2339 if (body->mbo_valid & OBD_MD_FLTYPE)
2340 inode->i_mode = (inode->i_mode & ~S_IFMT) |
2341 (body->mbo_mode & S_IFMT);
2343 LASSERT(inode->i_mode != 0);
2344 if (body->mbo_valid & OBD_MD_FLUID)
2345 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
2346 if (body->mbo_valid & OBD_MD_FLGID)
2347 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
2348 if (body->mbo_valid & OBD_MD_FLPROJID)
2349 lli->lli_projid = body->mbo_projid;
2350 if (body->mbo_valid & OBD_MD_FLNLINK)
2351 set_nlink(inode, body->mbo_nlink);
2352 if (body->mbo_valid & OBD_MD_FLRDEV)
2353 inode->i_rdev = old_decode_dev(body->mbo_rdev);
2355 if (body->mbo_valid & OBD_MD_FLID) {
2356 /* FID shouldn't be changed! */
2357 if (fid_is_sane(&lli->lli_fid)) {
2358 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
2359 "Trying to change FID "DFID
2360 " to the "DFID", inode "DFID"(%p)\n",
2361 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
2362 PFID(ll_inode2fid(inode)), inode);
2364 lli->lli_fid = body->mbo_fid1;
2368 LASSERT(fid_seq(&lli->lli_fid) != 0);
2370 lli->lli_attr_valid = body->mbo_valid;
2371 if (body->mbo_valid & OBD_MD_FLSIZE) {
2372 i_size_write(inode, body->mbo_size);
2374 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
2375 PFID(ll_inode2fid(inode)),
2376 (unsigned long long)body->mbo_size);
2378 if (body->mbo_valid & OBD_MD_FLBLOCKS)
2379 inode->i_blocks = body->mbo_blocks;
2381 if (body->mbo_valid & OBD_MD_FLLAZYSIZE)
2382 lli->lli_lazysize = body->mbo_size;
2383 if (body->mbo_valid & OBD_MD_FLLAZYBLOCKS)
2384 lli->lli_lazyblocks = body->mbo_blocks;
2387 if (body->mbo_valid & OBD_MD_TSTATE) {
2388 /* Set LLIF_FILE_RESTORING if restore ongoing and
2389 * clear it when done to ensure to start again
2390 * glimpsing updated attrs
2392 if (body->mbo_t_state & MS_RESTORE)
2393 ll_file_set_flag(lli, LLIF_FILE_RESTORING);
2395 ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
2401 int ll_read_inode2(struct inode *inode, void *opaque)
2403 struct lustre_md *md = opaque;
2404 struct ll_inode_info *lli = ll_i2info(inode);
2408 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2409 PFID(&lli->lli_fid), inode);
2411 /* Core attributes from the MDS first. This is a new inode, and
2412 * the VFS doesn't zero times in the core inode so we have to do
2413 * it ourselves. They will be overwritten by either MDS or OST
2414 * attributes - we just need to make sure they aren't newer.
2416 inode->i_mtime.tv_sec = 0;
2417 inode->i_atime.tv_sec = 0;
2418 inode->i_ctime.tv_sec = 0;
2420 rc = ll_update_inode(inode, md);
2424 /* OIDEBUG(inode); */
2426 #ifdef HAVE_BACKING_DEV_INFO
2427 /* initializing backing dev info. */
2428 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2430 if (S_ISREG(inode->i_mode)) {
2431 struct ll_sb_info *sbi = ll_i2sbi(inode);
2432 inode->i_op = &ll_file_inode_operations;
2433 inode->i_fop = sbi->ll_fop;
2434 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2436 } else if (S_ISDIR(inode->i_mode)) {
2437 inode->i_op = &ll_dir_inode_operations;
2438 inode->i_fop = &ll_dir_operations;
2440 } else if (S_ISLNK(inode->i_mode)) {
2441 inode->i_op = &ll_fast_symlink_inode_operations;
2444 inode->i_op = &ll_special_inode_operations;
2446 init_special_inode(inode, inode->i_mode,
2455 void ll_delete_inode(struct inode *inode)
2457 struct ll_inode_info *lli = ll_i2info(inode);
2458 struct address_space *mapping = &inode->i_data;
2459 unsigned long nrpages;
2460 unsigned long flags;
2464 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL) {
2465 /* It is last chance to write out dirty pages,
2466 * otherwise we may lose data while umount.
2468 * If i_nlink is 0 then just discard data. This is safe because
2469 * local inode gets i_nlink 0 from server only for the last
2470 * unlink, so that file is not opened somewhere else
2472 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, inode->i_nlink ?
2473 CL_FSYNC_LOCAL : CL_FSYNC_DISCARD, 1);
2475 truncate_inode_pages_final(mapping);
2477 /* Workaround for LU-118: Note nrpages may not be totally updated when
2478 * truncate_inode_pages() returns, as there can be a page in the process
2479 * of deletion (inside __delete_from_page_cache()) in the specified
2480 * range. Thus mapping->nrpages can be non-zero when this function
2481 * returns even after truncation of the whole mapping. Only do this if
2482 * npages isn't already zero.
2484 nrpages = mapping->nrpages;
2486 ll_xa_lock_irqsave(&mapping->i_pages, flags);
2487 nrpages = mapping->nrpages;
2488 ll_xa_unlock_irqrestore(&mapping->i_pages, flags);
2489 } /* Workaround end */
2491 LASSERTF(nrpages == 0, "%s: inode="DFID"(%p) nrpages=%lu, "
2492 "see https://jira.whamcloud.com/browse/LU-118\n",
2493 ll_i2sbi(inode)->ll_fsname,
2494 PFID(ll_inode2fid(inode)), inode, nrpages);
2496 ll_clear_inode(inode);
2502 int ll_iocontrol(struct inode *inode, struct file *file,
2503 unsigned int cmd, unsigned long arg)
2505 struct ll_sb_info *sbi = ll_i2sbi(inode);
2506 struct ptlrpc_request *req = NULL;
2511 case FS_IOC_GETFLAGS: {
2512 struct mdt_body *body;
2513 struct md_op_data *op_data;
2515 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2516 0, 0, LUSTRE_OPC_ANY,
2518 if (IS_ERR(op_data))
2519 RETURN(PTR_ERR(op_data));
2521 op_data->op_valid = OBD_MD_FLFLAGS;
2522 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2523 ll_finish_md_op_data(op_data);
2525 CERROR("%s: failure inode "DFID": rc = %d\n",
2526 sbi->ll_md_exp->exp_obd->obd_name,
2527 PFID(ll_inode2fid(inode)), rc);
2531 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2533 flags = body->mbo_flags;
2535 ptlrpc_req_finished(req);
2537 RETURN(put_user(flags, (int __user *)arg));
2539 case FS_IOC_SETFLAGS: {
2541 struct md_op_data *op_data;
2542 struct cl_object *obj;
2543 struct fsxattr fa = { 0 };
2545 if (get_user(flags, (int __user *)arg))
2548 fa.fsx_projid = ll_i2info(inode)->lli_projid;
2549 if (flags & LUSTRE_PROJINHERIT_FL)
2550 fa.fsx_xflags = FS_XFLAG_PROJINHERIT;
2552 rc = ll_ioctl_check_project(inode, &fa);
2556 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2557 LUSTRE_OPC_ANY, NULL);
2558 if (IS_ERR(op_data))
2559 RETURN(PTR_ERR(op_data));
2561 op_data->op_attr_flags = flags;
2562 op_data->op_xvalid |= OP_XVALID_FLAGS;
2563 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2564 ll_finish_md_op_data(op_data);
2565 ptlrpc_req_finished(req);
2569 ll_update_inode_flags(inode, flags);
2571 obj = ll_i2info(inode)->lli_clob;
2575 OBD_ALLOC_PTR(attr);
2579 rc = cl_setattr_ost(obj, attr, OP_XVALID_FLAGS, flags);
2591 int ll_flush_ctx(struct inode *inode)
2593 struct ll_sb_info *sbi = ll_i2sbi(inode);
2595 CDEBUG(D_SEC, "flush context for user %d\n",
2596 from_kuid(&init_user_ns, current_uid()));
2598 obd_set_info_async(NULL, sbi->ll_md_exp,
2599 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2601 obd_set_info_async(NULL, sbi->ll_dt_exp,
2602 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2607 /* umount -f client means force down, don't save state */
2608 void ll_umount_begin(struct super_block *sb)
2610 struct ll_sb_info *sbi = ll_s2sbi(sb);
2611 struct obd_device *obd;
2612 struct obd_ioctl_data *ioc_data;
2616 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2617 sb->s_count, atomic_read(&sb->s_active));
2619 obd = class_exp2obd(sbi->ll_md_exp);
2621 CERROR("Invalid MDC connection handle %#llx\n",
2622 sbi->ll_md_exp->exp_handle.h_cookie);
2628 obd = class_exp2obd(sbi->ll_dt_exp);
2630 CERROR("Invalid LOV connection handle %#llx\n",
2631 sbi->ll_dt_exp->exp_handle.h_cookie);
2637 OBD_ALLOC_PTR(ioc_data);
2639 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2640 sizeof *ioc_data, ioc_data, NULL);
2642 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2643 sizeof *ioc_data, ioc_data, NULL);
2645 OBD_FREE_PTR(ioc_data);
2648 /* Really, we'd like to wait until there are no requests outstanding,
2649 * and then continue. For now, we just periodically checking for vfs
2650 * to decrement mnt_cnt and hope to finish it within 10sec.
2654 !may_umount(sbi->ll_mnt.mnt)) {
2662 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2664 struct ll_sb_info *sbi = ll_s2sbi(sb);
2665 char *profilenm = get_profile_name(sb);
2669 if ((*flags & MS_RDONLY) != (sb->s_flags & SB_RDONLY)) {
2670 read_only = *flags & MS_RDONLY;
2671 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2672 sizeof(KEY_READ_ONLY),
2673 KEY_READ_ONLY, sizeof(read_only),
2676 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2677 profilenm, read_only ?
2678 "read-only" : "read-write", err);
2683 sb->s_flags |= SB_RDONLY;
2685 sb->s_flags &= ~SB_RDONLY;
2687 if (sbi->ll_flags & LL_SBI_VERBOSE)
2688 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2689 read_only ? "read-only" : "read-write");
2695 * Cleanup the open handle that is cached on MDT-side.
2697 * For open case, the client side open handling thread may hit error
2698 * after the MDT grant the open. Under such case, the client should
2699 * send close RPC to the MDT as cleanup; otherwise, the open handle
2700 * on the MDT will be leaked there until the client umount or evicted.
2702 * In further, if someone unlinked the file, because the open handle
2703 * holds the reference on such file/object, then it will block the
2704 * subsequent threads that want to locate such object via FID.
2706 * \param[in] sb super block for this file-system
2707 * \param[in] open_req pointer to the original open request
2709 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
2711 struct mdt_body *body;
2712 struct md_op_data *op_data;
2713 struct ptlrpc_request *close_req = NULL;
2714 struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
2717 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
2718 OBD_ALLOC_PTR(op_data);
2719 if (op_data == NULL) {
2720 CWARN("%s: cannot allocate op_data to release open handle for "
2721 DFID"\n", ll_s2sbi(sb)->ll_fsname, PFID(&body->mbo_fid1));
2726 op_data->op_fid1 = body->mbo_fid1;
2727 op_data->op_open_handle = body->mbo_open_handle;
2728 op_data->op_mod_time = ktime_get_real_seconds();
2729 md_close(exp, op_data, NULL, &close_req);
2730 ptlrpc_req_finished(close_req);
2731 ll_finish_md_op_data(op_data);
2736 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2737 struct super_block *sb, struct lookup_intent *it)
2739 struct ll_sb_info *sbi = NULL;
2740 struct lustre_md md = { NULL };
2741 bool default_lmv_deleted = false;
2746 LASSERT(*inode || sb);
2747 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2748 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2749 sbi->ll_md_exp, &md);
2754 * clear default_lmv only if intent_getattr reply doesn't contain it.
2755 * but it needs to be done after iget, check this early because
2756 * ll_update_lsm_md() may change md.
2758 if (it && (it->it_op & (IT_LOOKUP | IT_GETATTR)) &&
2759 S_ISDIR(md.body->mbo_mode) && !md.default_lmv)
2760 default_lmv_deleted = true;
2763 rc = ll_update_inode(*inode, &md);
2767 LASSERT(sb != NULL);
2770 * At this point server returns to client's same fid as client
2771 * generated for creating. So using ->fid1 is okay here.
2773 if (!fid_is_sane(&md.body->mbo_fid1)) {
2774 CERROR("%s: Fid is insane "DFID"\n",
2776 PFID(&md.body->mbo_fid1));
2777 GOTO(out, rc = -EINVAL);
2780 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2781 sbi->ll_flags & LL_SBI_32BIT_API),
2783 if (IS_ERR(*inode)) {
2785 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2787 CERROR("new_inode -fatal: rc %d\n", rc);
2792 /* Handling piggyback layout lock.
2793 * Layout lock can be piggybacked by getattr and open request.
2794 * The lsm can be applied to inode only if it comes with a layout lock
2795 * otherwise correct layout may be overwritten, for example:
2796 * 1. proc1: mdt returns a lsm but not granting layout
2797 * 2. layout was changed by another client
2798 * 3. proc2: refresh layout and layout lock granted
2799 * 4. proc1: to apply a stale layout */
2800 if (it != NULL && it->it_lock_mode != 0) {
2801 struct lustre_handle lockh;
2802 struct ldlm_lock *lock;
2804 lockh.cookie = it->it_lock_handle;
2805 lock = ldlm_handle2lock(&lockh);
2806 LASSERT(lock != NULL);
2807 if (ldlm_has_layout(lock)) {
2808 struct cl_object_conf conf;
2810 memset(&conf, 0, sizeof(conf));
2811 conf.coc_opc = OBJECT_CONF_SET;
2812 conf.coc_inode = *inode;
2813 conf.coc_lock = lock;
2814 conf.u.coc_layout = md.layout;
2815 (void)ll_layout_conf(*inode, &conf);
2817 LDLM_LOCK_PUT(lock);
2820 if (default_lmv_deleted)
2821 ll_update_default_lsm_md(*inode, &md);
2826 /* cleanup will be done if necessary */
2827 md_free_lustre_md(sbi->ll_md_exp, &md);
2829 if (rc != 0 && it != NULL && it->it_op & IT_OPEN) {
2830 ll_intent_drop_lock(it);
2831 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2837 int ll_obd_statfs(struct inode *inode, void __user *arg)
2839 struct ll_sb_info *sbi = NULL;
2840 struct obd_export *exp;
2842 struct obd_ioctl_data *data = NULL;
2846 if (!inode || !(sbi = ll_i2sbi(inode)))
2847 GOTO(out_statfs, rc = -EINVAL);
2849 rc = obd_ioctl_getdata(&buf, &len, arg);
2851 GOTO(out_statfs, rc);
2854 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2855 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2856 GOTO(out_statfs, rc = -EINVAL);
2858 if (data->ioc_inllen1 != sizeof(__u32) ||
2859 data->ioc_inllen2 != sizeof(__u32) ||
2860 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2861 data->ioc_plen2 != sizeof(struct obd_uuid))
2862 GOTO(out_statfs, rc = -EINVAL);
2864 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2865 if (type & LL_STATFS_LMV)
2866 exp = sbi->ll_md_exp;
2867 else if (type & LL_STATFS_LOV)
2868 exp = sbi->ll_dt_exp;
2870 GOTO(out_statfs, rc = -ENODEV);
2872 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2874 GOTO(out_statfs, rc);
2876 OBD_FREE_LARGE(buf, len);
2881 * this is normally called in ll_fini_md_op_data(), but sometimes it needs to
2882 * be called early to avoid deadlock.
2884 void ll_unlock_md_op_lsm(struct md_op_data *op_data)
2886 if (op_data->op_mea2_sem) {
2887 up_read_non_owner(op_data->op_mea2_sem);
2888 op_data->op_mea2_sem = NULL;
2891 if (op_data->op_mea1_sem) {
2892 up_read_non_owner(op_data->op_mea1_sem);
2893 op_data->op_mea1_sem = NULL;
2897 /* this function prepares md_op_data hint for passing it down to MD stack. */
2898 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
2899 struct inode *i1, struct inode *i2,
2900 const char *name, size_t namelen,
2901 __u32 mode, enum md_op_code opc,
2904 LASSERT(i1 != NULL);
2907 /* Do not reuse namelen for something else. */
2909 return ERR_PTR(-EINVAL);
2911 if (namelen > ll_i2sbi(i1)->ll_namelen)
2912 return ERR_PTR(-ENAMETOOLONG);
2914 /* "/" is not valid name, but it's allowed */
2915 if (!lu_name_is_valid_2(name, namelen) &&
2916 strncmp("/", name, namelen) != 0)
2917 return ERR_PTR(-EINVAL);
2920 if (op_data == NULL)
2921 OBD_ALLOC_PTR(op_data);
2923 if (op_data == NULL)
2924 return ERR_PTR(-ENOMEM);
2926 ll_i2gids(op_data->op_suppgids, i1, i2);
2927 op_data->op_fid1 = *ll_inode2fid(i1);
2928 op_data->op_code = opc;
2930 if (S_ISDIR(i1->i_mode)) {
2931 down_read_non_owner(&ll_i2info(i1)->lli_lsm_sem);
2932 op_data->op_mea1_sem = &ll_i2info(i1)->lli_lsm_sem;
2933 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2934 op_data->op_default_mea1 = ll_i2info(i1)->lli_default_lsm_md;
2938 op_data->op_fid2 = *ll_inode2fid(i2);
2939 if (S_ISDIR(i2->i_mode)) {
2941 /* i2 is typically a child of i1, and MUST be
2942 * further from the root to avoid deadlocks.
2944 down_read_non_owner(&ll_i2info(i2)->lli_lsm_sem);
2945 op_data->op_mea2_sem =
2946 &ll_i2info(i2)->lli_lsm_sem;
2948 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2951 fid_zero(&op_data->op_fid2);
2954 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2955 op_data->op_cli_flags |= CLI_HASH64;
2957 if (ll_need_32bit_api(ll_i2sbi(i1)))
2958 op_data->op_cli_flags |= CLI_API32;
2960 op_data->op_name = name;
2961 op_data->op_namelen = namelen;
2962 op_data->op_mode = mode;
2963 op_data->op_mod_time = ktime_get_real_seconds();
2964 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2965 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2966 op_data->op_cap = cfs_curproc_cap_pack();
2967 op_data->op_mds = 0;
2968 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2969 filename_is_volatile(name, namelen, &op_data->op_mds)) {
2970 op_data->op_bias |= MDS_CREATE_VOLATILE;
2972 op_data->op_data = data;
2977 void ll_finish_md_op_data(struct md_op_data *op_data)
2979 ll_unlock_md_op_lsm(op_data);
2980 security_release_secctx(op_data->op_file_secctx,
2981 op_data->op_file_secctx_size);
2982 llcrypt_free_ctx(op_data->op_file_encctx, op_data->op_file_encctx_size);
2983 OBD_FREE_PTR(op_data);
2986 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2988 struct ll_sb_info *sbi;
2990 LASSERT(seq && dentry);
2991 sbi = ll_s2sbi(dentry->d_sb);
2993 if (sbi->ll_flags & LL_SBI_NOLCK)
2994 seq_puts(seq, ",nolock");
2996 /* "flock" is the default since 2.13, but it wasn't for many years,
2997 * so it is still useful to print this to show it is enabled.
2998 * Start to print "noflock" so it is now clear when flock is disabled.
3000 if (sbi->ll_flags & LL_SBI_FLOCK)
3001 seq_puts(seq, ",flock");
3002 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
3003 seq_puts(seq, ",localflock");
3005 seq_puts(seq, ",noflock");
3007 if (sbi->ll_flags & LL_SBI_USER_XATTR)
3008 seq_puts(seq, ",user_xattr");
3010 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
3011 seq_puts(seq, ",lazystatfs");
3013 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
3014 seq_puts(seq, ",user_fid2path");
3016 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
3017 seq_puts(seq, ",always_ping");
3019 if (ll_sbi_has_test_dummy_encryption(sbi))
3020 seq_puts(seq, ",test_dummy_encryption");
3022 if (ll_sbi_has_encrypt(sbi))
3023 seq_puts(seq, ",encrypt");
3025 seq_puts(seq, ",noencrypt");
3031 * Get obd name by cmd, and copy out to user space
3033 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
3035 struct ll_sb_info *sbi = ll_i2sbi(inode);
3036 struct obd_device *obd;
3039 if (cmd == OBD_IOC_GETDTNAME)
3040 obd = class_exp2obd(sbi->ll_dt_exp);
3041 else if (cmd == OBD_IOC_GETMDNAME)
3042 obd = class_exp2obd(sbi->ll_md_exp);
3049 if (copy_to_user((void __user *)arg, obd->obd_name,
3050 strlen(obd->obd_name) + 1))
3056 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
3063 p.mnt = current->fs->root.mnt;
3065 path = d_path(&p, buf, bufsize);
3070 void ll_dirty_page_discard_warn(struct page *page, int ioret)
3072 char *buf, *path = NULL;
3073 struct dentry *dentry = NULL;
3074 struct inode *inode = page->mapping->host;
3076 /* this can be called inside spin lock so use GFP_ATOMIC. */
3077 buf = (char *)__get_free_page(GFP_ATOMIC);
3079 dentry = d_find_alias(page->mapping->host);
3081 path = ll_d_path(dentry, buf, PAGE_SIZE);
3084 /* The below message is checked in recovery-small.sh test_24b */
3086 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
3087 "(rc %d)\n", ll_i2sbi(inode)->ll_fsname,
3088 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
3089 PFID(ll_inode2fid(inode)),
3090 (path && !IS_ERR(path)) ? path : "", ioret);
3096 free_page((unsigned long)buf);
3099 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
3100 struct lov_user_md **kbuf)
3102 struct lov_user_md lum;
3106 if (copy_from_user(&lum, md, sizeof(lum)))
3109 lum_size = ll_lov_user_md_size(&lum);
3113 OBD_ALLOC_LARGE(*kbuf, lum_size);
3117 if (copy_from_user(*kbuf, md, lum_size) != 0) {
3118 OBD_FREE_LARGE(*kbuf, lum_size);
3126 * Compute llite root squash state after a change of root squash
3127 * configuration setting or add/remove of a lnet nid
3129 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
3131 struct root_squash_info *squash = &sbi->ll_squash;
3134 struct lnet_process_id id;
3136 /* Update norootsquash flag */
3137 spin_lock(&squash->rsi_lock);
3138 if (list_empty(&squash->rsi_nosquash_nids))
3139 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
3141 /* Do not apply root squash as soon as one of our NIDs is
3142 * in the nosquash_nids list */
3145 while (LNetGetId(i++, &id) != -ENOENT) {
3146 if (id.nid == LNET_NID_LO_0)
3148 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
3154 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
3156 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
3158 spin_unlock(&squash->rsi_lock);
3162 * Parse linkea content to extract information about a given hardlink
3164 * \param[in] ldata - Initialized linkea data
3165 * \param[in] linkno - Link identifier
3166 * \param[out] parent_fid - The entry's parent FID
3167 * \param[out] ln - Entry name destination buffer
3169 * \retval 0 on success
3170 * \retval Appropriate negative error code on failure
3172 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
3173 struct lu_fid *parent_fid, struct lu_name *ln)
3179 rc = linkea_init_with_rec(ldata);
3183 if (linkno >= ldata->ld_leh->leh_reccount)
3184 /* beyond last link */
3187 linkea_first_entry(ldata);
3188 for (idx = 0; ldata->ld_lee != NULL; idx++) {
3189 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
3194 linkea_next_entry(ldata);
3204 * Get parent FID and name of an identified link. Operation is performed for
3205 * a given link number, letting the caller iterate over linkno to list one or
3206 * all links of an entry.
3208 * \param[in] file - File descriptor against which to perform the operation
3209 * \param[in,out] arg - User-filled structure containing the linkno to operate
3210 * on and the available size. It is eventually filled with
3211 * the requested information or left untouched on error
3213 * \retval - 0 on success
3214 * \retval - Appropriate negative error code on failure
3216 int ll_getparent(struct file *file, struct getparent __user *arg)
3218 struct inode *inode = file_inode(file);
3219 struct linkea_data *ldata;
3220 struct lu_buf buf = LU_BUF_NULL;
3222 struct lu_fid parent_fid;
3229 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
3230 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
3233 if (get_user(name_size, &arg->gp_name_size))
3236 if (get_user(linkno, &arg->gp_linkno))
3239 if (name_size > PATH_MAX)
3242 OBD_ALLOC(ldata, sizeof(*ldata));
3246 rc = linkea_data_new(ldata, &buf);
3248 GOTO(ldata_free, rc);
3250 rc = ll_xattr_list(inode, XATTR_NAME_LINK, XATTR_TRUSTED_T, buf.lb_buf,
3251 buf.lb_len, OBD_MD_FLXATTR);
3255 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
3259 if (ln.ln_namelen >= name_size)
3260 GOTO(lb_free, rc = -EOVERFLOW);
3262 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
3263 GOTO(lb_free, rc = -EFAULT);
3265 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
3266 GOTO(lb_free, rc = -EFAULT);
3268 if (put_user('\0', arg->gp_name + ln.ln_namelen))
3269 GOTO(lb_free, rc = -EFAULT);
3274 OBD_FREE(ldata, sizeof(*ldata));