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>
53 #ifndef HAVE_CPUS_READ_LOCK
54 #include <libcfs/linux/linux-cpu.h>
56 #include <uapi/linux/lustre/lustre_ioctl.h>
57 #ifdef HAVE_UAPI_LINUX_MOUNT_H
58 #include <uapi/linux/mount.h>
61 #include <lustre_ha.h>
62 #include <lustre_dlm.h>
63 #include <lprocfs_status.h>
64 #include <lustre_disk.h>
65 #include <uapi/linux/lustre/lustre_param.h>
66 #include <lustre_log.h>
67 #include <cl_object.h>
68 #include <obd_cksum.h>
69 #include "llite_internal.h"
71 struct kmem_cache *ll_file_data_slab;
74 #define log2(n) ffz(~(n))
78 * If there is only one number of core visible to Lustre,
79 * async readahead will be disabled, to avoid massive over
80 * subscription, we use 1/2 of active cores as default max
81 * async readahead requests.
83 static inline unsigned int ll_get_ra_async_max_active(void)
85 return cfs_cpt_weight(cfs_cpt_tab, CFS_CPT_ANY) >> 1;
88 static struct ll_sb_info *ll_init_sbi(void)
90 struct ll_sb_info *sbi = NULL;
92 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 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
132 SBI_DEFAULT_READ_AHEAD_MAX);
133 sbi->ll_ra_info.ra_async_pages_per_file_threshold =
134 sbi->ll_ra_info.ra_max_pages_per_file;
135 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
136 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = -1;
137 atomic_set(&sbi->ll_ra_info.ra_async_inflight, 0);
139 sbi->ll_flags |= LL_SBI_VERBOSE;
140 #ifdef ENABLE_CHECKSUM
141 sbi->ll_flags |= LL_SBI_CHECKSUM;
144 sbi->ll_flags |= LL_SBI_FLOCK;
147 #ifdef HAVE_LRU_RESIZE_SUPPORT
148 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
150 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
152 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
153 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
155 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
159 /* metadata statahead is enabled by default */
160 sbi->ll_sa_running_max = LL_SA_RUNNING_DEF;
161 sbi->ll_sa_max = LL_SA_RPC_DEF;
162 atomic_set(&sbi->ll_sa_total, 0);
163 atomic_set(&sbi->ll_sa_wrong, 0);
164 atomic_set(&sbi->ll_sa_running, 0);
165 atomic_set(&sbi->ll_agl_total, 0);
166 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
167 sbi->ll_flags |= LL_SBI_FAST_READ;
168 sbi->ll_flags |= LL_SBI_TINY_WRITE;
169 ll_sbi_set_encrypt(sbi, true);
172 sbi->ll_squash.rsi_uid = 0;
173 sbi->ll_squash.rsi_gid = 0;
174 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
175 spin_lock_init(&sbi->ll_squash.rsi_lock);
177 /* Per-filesystem file heat */
178 sbi->ll_heat_decay_weight = SBI_DEFAULT_HEAT_DECAY_WEIGHT;
179 sbi->ll_heat_period_second = SBI_DEFAULT_HEAT_PERIOD_SECOND;
182 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
184 pcc_super_fini(&sbi->ll_pcc_super);
190 static void ll_free_sbi(struct super_block *sb)
192 struct ll_sb_info *sbi = ll_s2sbi(sb);
196 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
197 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
198 if (sbi->ll_ra_info.ll_readahead_wq)
199 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
200 if (sbi->ll_cache != NULL) {
201 cl_cache_decref(sbi->ll_cache);
202 sbi->ll_cache = NULL;
204 pcc_super_fini(&sbi->ll_pcc_super);
205 OBD_FREE(sbi, sizeof(*sbi));
210 static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
212 struct inode *root = NULL;
213 struct ll_sb_info *sbi = ll_s2sbi(sb);
214 struct obd_statfs *osfs = NULL;
215 struct ptlrpc_request *request = NULL;
216 struct obd_connect_data *data = NULL;
217 struct obd_uuid *uuid;
218 struct md_op_data *op_data;
219 struct lustre_md lmd;
221 int size, err, checksum;
224 sbi->ll_md_obd = class_name2obd(md);
225 if (!sbi->ll_md_obd) {
226 CERROR("MD %s: not setup or attached\n", md);
240 /* pass client page size via ocd_grant_blkbits, the server should report
241 * back its backend blocksize for grant calculation purpose */
242 data->ocd_grant_blkbits = PAGE_SHIFT;
244 /* indicate MDT features supported by this client */
245 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
246 OBD_CONNECT_ATTRFID | OBD_CONNECT_GRANT |
247 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
248 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
249 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
250 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
251 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
252 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
253 OBD_CONNECT_64BITHASH |
254 OBD_CONNECT_EINPROGRESS |
255 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
256 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
257 OBD_CONNECT_MAX_EASIZE |
258 OBD_CONNECT_FLOCK_DEAD |
259 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
260 OBD_CONNECT_OPEN_BY_FID |
261 OBD_CONNECT_DIR_STRIPE |
262 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_CKSUM |
263 OBD_CONNECT_SUBTREE |
264 OBD_CONNECT_MULTIMODRPCS |
265 OBD_CONNECT_GRANT_PARAM |
266 OBD_CONNECT_SHORTIO | OBD_CONNECT_FLAGS2;
268 data->ocd_connect_flags2 = OBD_CONNECT2_DIR_MIGRATE |
269 OBD_CONNECT2_SUM_STATFS |
270 OBD_CONNECT2_OVERSTRIPING |
272 OBD_CONNECT2_LOCK_CONVERT |
273 OBD_CONNECT2_ARCHIVE_ID_ARRAY |
274 OBD_CONNECT2_INC_XID |
276 OBD_CONNECT2_ASYNC_DISCARD |
280 #ifdef HAVE_LRU_RESIZE_SUPPORT
281 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
282 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
284 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
285 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK |
286 OBD_CONNECT_LARGE_ACL;
289 data->ocd_cksum_types = obd_cksum_types_supported_client();
291 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
292 /* flag mdc connection as lightweight, only used for test
293 * purpose, use with care */
294 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
296 data->ocd_ibits_known = MDS_INODELOCK_FULL;
297 data->ocd_version = LUSTRE_VERSION_CODE;
299 if (sb->s_flags & SB_RDONLY)
300 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
301 if (sbi->ll_flags & LL_SBI_USER_XATTR)
302 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
305 /* Setting this indicates we correctly support S_NOSEC (See kernel
306 * commit 9e1f1de02c2275d7172e18dc4e7c2065777611bf)
308 sb->s_flags |= SB_NOSEC;
311 if (sbi->ll_flags & LL_SBI_FLOCK)
312 sbi->ll_fop = &ll_file_operations_flock;
313 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
314 sbi->ll_fop = &ll_file_operations;
316 sbi->ll_fop = &ll_file_operations_noflock;
318 /* always ping even if server suppress_pings */
319 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
320 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
322 obd_connect_set_secctx(data);
323 if (ll_sbi_has_encrypt(sbi))
324 obd_connect_set_enc(data);
326 #if defined(CONFIG_SECURITY)
327 data->ocd_connect_flags2 |= OBD_CONNECT2_SELINUX_POLICY;
330 data->ocd_brw_size = MD_MAX_BRW_SIZE;
332 err = obd_connect(NULL, &sbi->ll_md_exp, sbi->ll_md_obd,
333 &sbi->ll_sb_uuid, data, sbi->ll_cache);
335 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
336 "recovery, of which this client is not a "
337 "part. Please wait for recovery to complete,"
338 " abort, or time out.\n", md);
341 CERROR("cannot connect to %s: rc = %d\n", md, err);
345 sbi->ll_md_exp->exp_connect_data = *data;
347 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
348 LUSTRE_SEQ_METADATA);
350 CERROR("%s: Can't init metadata layer FID infrastructure, "
351 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
355 /* For mount, we only need fs info from MDT0, and also in DNE, it
356 * can make sure the client can be mounted as long as MDT0 is
358 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
359 ktime_get_seconds() - sbi->ll_statfs_max_age,
360 OBD_STATFS_FOR_MDT0);
362 GOTO(out_md_fid, err);
364 /* This needs to be after statfs to ensure connect has finished.
365 * Note that "data" does NOT contain the valid connect reply.
366 * If connecting to a 1.8 server there will be no LMV device, so
367 * we can access the MDC export directly and exp_connect_flags will
368 * be non-zero, but if accessing an upgraded 2.1 server it will
369 * have the correct flags filled in.
370 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
371 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
372 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
373 valid != CLIENT_CONNECT_MDT_REQD) {
376 OBD_ALLOC_WAIT(buf, PAGE_SIZE);
377 obd_connect_flags2str(buf, PAGE_SIZE,
378 valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
379 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
380 "feature(s) needed for correct operation "
381 "of this client (%s). Please upgrade "
382 "server or downgrade client.\n",
383 sbi->ll_md_exp->exp_obd->obd_name, buf);
384 OBD_FREE(buf, PAGE_SIZE);
385 GOTO(out_md_fid, err = -EPROTO);
388 size = sizeof(*data);
389 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
390 KEY_CONN_DATA, &size, data);
392 CERROR("%s: Get connect data failed: rc = %d\n",
393 sbi->ll_md_exp->exp_obd->obd_name, err);
394 GOTO(out_md_fid, err);
397 LASSERT(osfs->os_bsize);
398 sb->s_blocksize = osfs->os_bsize;
399 sb->s_blocksize_bits = log2(osfs->os_bsize);
400 sb->s_magic = LL_SUPER_MAGIC;
401 sb->s_maxbytes = MAX_LFS_FILESIZE;
402 sbi->ll_namelen = osfs->os_namelen;
403 sbi->ll_mnt.mnt = current->fs->root.mnt;
405 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
406 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
407 LCONSOLE_INFO("Disabling user_xattr feature because "
408 "it is not supported on the server\n");
409 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
412 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
414 sb->s_flags |= SB_POSIXACL;
416 sbi->ll_flags |= LL_SBI_ACL;
418 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
420 sb->s_flags &= ~SB_POSIXACL;
422 sbi->ll_flags &= ~LL_SBI_ACL;
425 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
426 sbi->ll_flags |= LL_SBI_64BIT_HASH;
428 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
429 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
431 if (obd_connect_has_secctx(data))
432 sbi->ll_flags |= LL_SBI_FILE_SECCTX;
434 if (ll_sbi_has_encrypt(sbi) && !obd_connect_has_enc(data)) {
435 if (ll_sbi_has_test_dummy_encryption(sbi))
436 LCONSOLE_WARN("%s: server %s does not support encryption feature, encryption deactivated.\n",
438 sbi->ll_md_exp->exp_obd->obd_name);
439 ll_sbi_set_encrypt(sbi, false);
442 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
443 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
444 LCONSOLE_INFO("%s: disabling xattr cache due to "
445 "unknown maximum xattr size.\n", dt);
446 } else if (!sbi->ll_xattr_cache_set) {
447 /* If xattr_cache is already set (no matter 0 or 1)
448 * during processing llog, it won't be enabled here. */
449 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
450 sbi->ll_xattr_cache_enabled = 1;
454 sbi->ll_dt_obd = class_name2obd(dt);
455 if (!sbi->ll_dt_obd) {
456 CERROR("DT %s: not setup or attached\n", dt);
457 GOTO(out_md_fid, err = -ENODEV);
460 /* pass client page size via ocd_grant_blkbits, the server should report
461 * back its backend blocksize for grant calculation purpose */
462 data->ocd_grant_blkbits = PAGE_SHIFT;
464 /* indicate OST features supported by this client */
465 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
466 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
467 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
468 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
469 OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
470 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
471 OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
472 OBD_CONNECT_EINPROGRESS |
473 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
474 OBD_CONNECT_LAYOUTLOCK |
475 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
476 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_SHORTIO |
477 OBD_CONNECT_FLAGS2 | OBD_CONNECT_GRANT_SHRINK;
478 data->ocd_connect_flags2 = OBD_CONNECT2_LOCKAHEAD |
479 OBD_CONNECT2_INC_XID;
481 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
482 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
484 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
485 * disabled by default, because it can still be enabled on the
486 * fly via /sys. As a consequence, we still need to come to an
487 * agreement on the supported algorithms at connect time
489 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
491 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
492 data->ocd_cksum_types = OBD_CKSUM_ADLER;
494 data->ocd_cksum_types = obd_cksum_types_supported_client();
496 #ifdef HAVE_LRU_RESIZE_SUPPORT
497 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
499 /* always ping even if server suppress_pings */
500 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
501 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
503 if (ll_sbi_has_encrypt(sbi))
504 obd_connect_set_enc(data);
506 CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d "
507 "ocd_grant: %d\n", data->ocd_connect_flags,
508 data->ocd_version, data->ocd_grant);
510 sbi->ll_dt_obd->obd_upcall.onu_owner = &sbi->ll_lco;
511 sbi->ll_dt_obd->obd_upcall.onu_upcall = cl_ocd_update;
513 data->ocd_brw_size = DT_MAX_BRW_SIZE;
515 err = obd_connect(NULL, &sbi->ll_dt_exp, sbi->ll_dt_obd,
516 &sbi->ll_sb_uuid, data, sbi->ll_cache);
518 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
519 "recovery, of which this client is not a "
520 "part. Please wait for recovery to "
521 "complete, abort, or time out.\n", dt);
524 CERROR("%s: Cannot connect to %s: rc = %d\n",
525 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
529 if (ll_sbi_has_encrypt(sbi) &&
530 !obd_connect_has_enc(&sbi->ll_dt_obd->u.lov.lov_ocd)) {
531 if (ll_sbi_has_test_dummy_encryption(sbi))
532 LCONSOLE_WARN("%s: server %s does not support encryption feature, encryption deactivated.\n",
534 ll_sbi_set_encrypt(sbi, false);
535 } else if (ll_sbi_has_test_dummy_encryption(sbi)) {
536 LCONSOLE_WARN("Test dummy encryption mode enabled\n");
539 sbi->ll_dt_exp->exp_connect_data = *data;
541 /* Don't change value if it was specified in the config log */
542 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages == -1) {
543 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
544 max_t(unsigned long, SBI_DEFAULT_READ_AHEAD_WHOLE_MAX,
545 (data->ocd_brw_size >> PAGE_SHIFT));
546 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages >
547 sbi->ll_ra_info.ra_max_pages_per_file)
548 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
549 sbi->ll_ra_info.ra_max_pages_per_file;
552 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
553 LUSTRE_SEQ_METADATA);
555 CERROR("%s: Can't init data layer FID infrastructure, "
556 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
560 mutex_lock(&sbi->ll_lco.lco_lock);
561 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
562 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
563 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
564 mutex_unlock(&sbi->ll_lco.lco_lock);
566 fid_zero(&sbi->ll_root_fid);
567 err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
570 CERROR("cannot mds_connect: rc = %d\n", err);
571 GOTO(out_lock_cn_cb, err);
573 if (!fid_is_sane(&sbi->ll_root_fid)) {
574 CERROR("%s: Invalid root fid "DFID" during mount\n",
575 sbi->ll_md_exp->exp_obd->obd_name,
576 PFID(&sbi->ll_root_fid));
577 GOTO(out_lock_cn_cb, err = -EINVAL);
579 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
581 sb->s_op = &lustre_super_operations;
582 sb->s_xattr = ll_xattr_handlers;
583 #if THREAD_SIZE >= 8192 /*b=17630*/
584 sb->s_export_op = &lustre_export_operations;
586 #ifdef HAVE_LUSTRE_CRYPTO
587 llcrypt_set_ops(sb, &lustre_cryptops);
591 * XXX: move this to after cbd setup? */
592 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
593 if (sbi->ll_flags & LL_SBI_ACL)
594 valid |= OBD_MD_FLACL;
596 OBD_ALLOC_PTR(op_data);
598 GOTO(out_lock_cn_cb, err = -ENOMEM);
600 op_data->op_fid1 = sbi->ll_root_fid;
601 op_data->op_mode = 0;
602 op_data->op_valid = valid;
604 err = md_getattr(sbi->ll_md_exp, op_data, &request);
606 OBD_FREE_PTR(op_data);
608 CERROR("%s: md_getattr failed for root: rc = %d\n",
609 sbi->ll_md_exp->exp_obd->obd_name, err);
610 GOTO(out_lock_cn_cb, err);
613 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
614 sbi->ll_md_exp, &lmd);
616 CERROR("failed to understand root inode md: rc = %d\n", err);
617 ptlrpc_req_finished(request);
618 GOTO(out_lock_cn_cb, err);
621 LASSERT(fid_is_sane(&sbi->ll_root_fid));
622 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
623 sbi->ll_flags & LL_SBI_32BIT_API),
625 md_free_lustre_md(sbi->ll_md_exp, &lmd);
626 ptlrpc_req_finished(request);
629 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
631 posix_acl_release(lmd.posix_acl);
632 lmd.posix_acl = NULL;
635 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
637 CERROR("%s: bad ll_iget() for root: rc = %d\n",
638 sbi->ll_fsname, err);
642 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
643 if (sbi->ll_checksum_set) {
644 err = obd_set_info_async(NULL, sbi->ll_dt_exp,
645 sizeof(KEY_CHECKSUM), KEY_CHECKSUM,
646 sizeof(checksum), &checksum, NULL);
648 CERROR("%s: Set checksum failed: rc = %d\n",
649 sbi->ll_dt_exp->exp_obd->obd_name, err);
655 sb->s_root = d_make_root(root);
656 if (sb->s_root == NULL) {
658 CERROR("%s: can't make root dentry: rc = %d\n",
659 sbi->ll_fsname, err);
663 sbi->ll_sdev_orig = sb->s_dev;
665 /* We set sb->s_dev equal on all lustre clients in order to support
666 * NFS export clustering. NFSD requires that the FSID be the same
668 /* s_dev is also used in lt_compare() to compare two fs, but that is
669 * only a node-local comparison. */
670 uuid = obd_get_uuid(sbi->ll_md_exp);
672 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
679 if (sbi->ll_dt_obd) {
680 err = sysfs_create_link(&sbi->ll_kset.kobj,
681 &sbi->ll_dt_obd->obd_kset.kobj,
682 sbi->ll_dt_obd->obd_type->typ_name);
684 CERROR("%s: could not register %s in llite: rc = %d\n",
685 dt, sbi->ll_fsname, err);
690 if (sbi->ll_md_obd) {
691 err = sysfs_create_link(&sbi->ll_kset.kobj,
692 &sbi->ll_md_obd->obd_kset.kobj,
693 sbi->ll_md_obd->obd_type->typ_name);
695 CERROR("%s: could not register %s in llite: rc = %d\n",
696 md, sbi->ll_fsname, err);
706 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
708 obd_disconnect(sbi->ll_dt_exp);
709 sbi->ll_dt_exp = NULL;
710 sbi->ll_dt_obd = NULL;
712 obd_fid_fini(sbi->ll_md_exp->exp_obd);
714 obd_disconnect(sbi->ll_md_exp);
715 sbi->ll_md_exp = NULL;
716 sbi->ll_md_obd = NULL;
725 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
729 size = sizeof(*lmmsize);
730 rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
731 KEY_MAX_EASIZE, &size, lmmsize);
733 CERROR("%s: cannot get max LOV EA size: rc = %d\n",
734 sbi->ll_dt_exp->exp_obd->obd_name, rc);
738 CDEBUG(D_INFO, "max LOV ea size: %d\n", *lmmsize);
741 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
742 KEY_MAX_EASIZE, &size, lmmsize);
744 CERROR("Get max mdsize error rc %d\n", rc);
746 CDEBUG(D_INFO, "max LMV ea size: %d\n", *lmmsize);
752 * Get the value of the default_easize parameter.
754 * \see client_obd::cl_default_mds_easize
756 * \param[in] sbi superblock info for this filesystem
757 * \param[out] lmmsize pointer to storage location for value
759 * \retval 0 on success
760 * \retval negative negated errno on failure
762 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
767 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
768 KEY_DEFAULT_EASIZE, &size, lmmsize);
770 CERROR("Get default mdsize error rc %d\n", rc);
776 * Set the default_easize parameter to the given value.
778 * \see client_obd::cl_default_mds_easize
780 * \param[in] sbi superblock info for this filesystem
781 * \param[in] lmmsize the size to set
783 * \retval 0 on success
784 * \retval negative negated errno on failure
786 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
790 if (lmmsize < sizeof(struct lov_mds_md) ||
791 lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
794 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
795 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
796 sizeof(int), &lmmsize, NULL);
801 static void client_common_put_super(struct super_block *sb)
803 struct ll_sb_info *sbi = ll_s2sbi(sb);
808 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
809 obd_disconnect(sbi->ll_dt_exp);
810 sbi->ll_dt_exp = NULL;
812 ll_debugfs_unregister_super(sb);
814 obd_fid_fini(sbi->ll_md_exp->exp_obd);
815 obd_disconnect(sbi->ll_md_exp);
816 sbi->ll_md_exp = NULL;
821 void ll_kill_super(struct super_block *sb)
823 struct ll_sb_info *sbi;
827 if (!(sb->s_flags & SB_ACTIVE))
831 /* we need restore s_dev from changed for clustred NFS before put_super
832 * because new kernels have cached s_dev and change sb->s_dev in
833 * put_super not affected real removing devices */
835 sb->s_dev = sbi->ll_sdev_orig;
837 /* wait running statahead threads to quit */
838 while (atomic_read(&sbi->ll_sa_running) > 0)
839 schedule_timeout_uninterruptible(
840 cfs_time_seconds(1) >> 3);
846 static inline int ll_set_opt(const char *opt, char *data, int fl)
848 if (strncmp(opt, data, strlen(opt)) != 0)
854 /* non-client-specific mount options are parsed in lmd_parse */
855 static int ll_options(char *options, struct ll_sb_info *sbi)
858 char *s1 = options, *s2;
859 int *flags = &sbi->ll_flags;
865 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
868 CDEBUG(D_SUPER, "next opt=%s\n", s1);
869 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
874 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
876 *flags = (*flags & ~LL_SBI_LOCALFLOCK) | tmp;
879 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
881 *flags = (*flags & ~LL_SBI_FLOCK) | tmp;
884 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
889 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
894 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
899 tmp = ll_set_opt("context", s1, 1);
902 tmp = ll_set_opt("fscontext", s1, 1);
905 tmp = ll_set_opt("defcontext", s1, 1);
908 tmp = ll_set_opt("rootcontext", s1, 1);
911 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
916 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
922 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
925 sbi->ll_checksum_set = 1;
928 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
931 sbi->ll_checksum_set = 1;
934 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
939 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
944 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
949 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
954 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
959 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
964 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
969 tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
974 tmp = ll_set_opt("test_dummy_encryption", s1,
975 LL_SBI_TEST_DUMMY_ENCRYPTION);
977 #ifdef HAVE_LUSTRE_CRYPTO
980 LCONSOLE_WARN("Test dummy encryption mount option ignored: encryption not supported\n");
984 tmp = ll_set_opt("noencrypt", s1, LL_SBI_ENCRYPT);
986 #ifdef HAVE_LUSTRE_CRYPTO
989 LCONSOLE_WARN("noencrypt mount option ignored: encryption not supported\n");
993 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
999 s2 = strchr(s1, ',');
1007 void ll_lli_init(struct ll_inode_info *lli)
1009 lli->lli_inode_magic = LLI_INODE_MAGIC;
1011 spin_lock_init(&lli->lli_lock);
1012 lli->lli_posix_acl = NULL;
1013 /* Do not set lli_fid, it has been initialized already. */
1014 fid_zero(&lli->lli_pfid);
1015 lli->lli_mds_read_och = NULL;
1016 lli->lli_mds_write_och = NULL;
1017 lli->lli_mds_exec_och = NULL;
1018 lli->lli_open_fd_read_count = 0;
1019 lli->lli_open_fd_write_count = 0;
1020 lli->lli_open_fd_exec_count = 0;
1021 mutex_init(&lli->lli_och_mutex);
1022 spin_lock_init(&lli->lli_agl_lock);
1023 spin_lock_init(&lli->lli_layout_lock);
1024 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
1025 lli->lli_clob = NULL;
1027 init_rwsem(&lli->lli_xattrs_list_rwsem);
1028 mutex_init(&lli->lli_xattrs_enq_lock);
1030 LASSERT(lli->lli_vfs_inode.i_mode != 0);
1031 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
1032 lli->lli_opendir_key = NULL;
1033 lli->lli_sai = NULL;
1034 spin_lock_init(&lli->lli_sa_lock);
1035 lli->lli_opendir_pid = 0;
1036 lli->lli_sa_enabled = 0;
1037 init_rwsem(&lli->lli_lsm_sem);
1039 mutex_init(&lli->lli_size_mutex);
1040 lli->lli_symlink_name = NULL;
1041 ll_trunc_sem_init(&lli->lli_trunc_sem);
1042 range_lock_tree_init(&lli->lli_write_tree);
1043 init_rwsem(&lli->lli_glimpse_sem);
1044 lli->lli_glimpse_time = ktime_set(0, 0);
1045 INIT_LIST_HEAD(&lli->lli_agl_list);
1046 lli->lli_agl_index = 0;
1047 lli->lli_async_rc = 0;
1048 spin_lock_init(&lli->lli_heat_lock);
1049 obd_heat_clear(lli->lli_heat_instances, OBD_HEAT_COUNT);
1050 lli->lli_heat_flags = 0;
1051 mutex_init(&lli->lli_pcc_lock);
1052 lli->lli_pcc_state = PCC_STATE_FL_NONE;
1053 lli->lli_pcc_inode = NULL;
1054 lli->lli_pcc_dsflags = PCC_DATASET_INVALID;
1055 lli->lli_pcc_generation = 0;
1056 mutex_init(&lli->lli_group_mutex);
1057 lli->lli_group_users = 0;
1058 lli->lli_group_gid = 0;
1060 mutex_init(&lli->lli_layout_mutex);
1061 memset(lli->lli_jobid, 0, sizeof(lli->lli_jobid));
1064 #define MAX_STRING_SIZE 128
1066 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1068 #define LSI_BDI_INITIALIZED 0x00400000
1070 #ifndef HAVE_BDI_CAP_MAP_COPY
1071 # define BDI_CAP_MAP_COPY 0
1074 static int super_setup_bdi_name(struct super_block *sb, char *fmt, ...)
1076 struct lustre_sb_info *lsi = s2lsi(sb);
1077 char buf[MAX_STRING_SIZE];
1081 err = bdi_init(&lsi->lsi_bdi);
1085 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1086 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1087 lsi->lsi_bdi.name = "lustre";
1088 va_start(args, fmt);
1089 vsnprintf(buf, MAX_STRING_SIZE, fmt, args);
1091 err = bdi_register(&lsi->lsi_bdi, NULL, "%s", buf);
1094 sb->s_bdi = &lsi->lsi_bdi;
1098 #endif /* !HAVE_SUPER_SETUP_BDI_NAME */
1100 int ll_fill_super(struct super_block *sb)
1102 struct lustre_profile *lprof = NULL;
1103 struct lustre_sb_info *lsi = s2lsi(sb);
1104 struct ll_sb_info *sbi = NULL;
1105 char *dt = NULL, *md = NULL;
1106 char *profilenm = get_profile_name(sb);
1107 struct config_llog_instance *cfg;
1108 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1109 const int instlen = LUSTRE_MAXINSTANCE + 2;
1110 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1111 char name[MAX_STRING_SIZE];
1120 /* for ASLR, to map between cfg_instance and hashed ptr */
1121 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1122 profilenm, cfg_instance, sb);
1126 GOTO(out_free_cfg, err = -ENOMEM);
1128 /* client additional sb info */
1129 lsi->lsi_llsbi = sbi = ll_init_sbi();
1131 GOTO(out_free_cfg, err = PTR_ERR(sbi));
1133 err = ll_options(lsi->lsi_lmd->lmd_opts, sbi);
1135 GOTO(out_free_cfg, err);
1137 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1138 sb->s_d_op = &ll_d_ops;
1141 generate_random_uuid(uuid.b);
1142 snprintf(sbi->ll_sb_uuid.uuid, sizeof(sbi->ll_sb_uuid), "%pU", uuid.b);
1144 CDEBUG(D_CONFIG, "llite sb uuid: %s\n", sbi->ll_sb_uuid.uuid);
1147 len = strlen(profilenm);
1148 ptr = strrchr(profilenm, '-');
1149 if (ptr && (strcmp(ptr, "-client") == 0))
1152 if (len > LUSTRE_MAXFSNAME) {
1153 if (unlikely(len >= MAX_STRING_SIZE))
1154 len = MAX_STRING_SIZE - 1;
1155 strncpy(name, profilenm, len);
1157 err = -ENAMETOOLONG;
1158 CERROR("%s: fsname longer than %u characters: rc = %d\n",
1159 name, LUSTRE_MAXFSNAME, err);
1160 GOTO(out_free_cfg, err);
1162 strncpy(sbi->ll_fsname, profilenm, len);
1163 sbi->ll_fsname[len] = '\0';
1166 snprintf(name, sizeof(name), "%.*s-%016lx", len,
1167 profilenm, cfg_instance);
1169 err = super_setup_bdi_name(sb, "%s", name);
1171 GOTO(out_free_cfg, err);
1173 /* Call ll_debugfs_register_super() before lustre_process_log()
1174 * so that "llite.*.*" params can be processed correctly.
1176 err = ll_debugfs_register_super(sb, name);
1178 CERROR("%s: could not register mountpoint in llite: rc = %d\n",
1179 sbi->ll_fsname, err);
1183 /* The cfg_instance is a value unique to this super, in case some
1184 * joker tries to mount the same fs at two mount points.
1186 cfg->cfg_instance = cfg_instance;
1187 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1188 cfg->cfg_callback = class_config_llog_handler;
1189 cfg->cfg_sub_clds = CONFIG_SUB_CLIENT;
1190 /* set up client obds */
1191 err = lustre_process_log(sb, profilenm, cfg);
1193 GOTO(out_debugfs, err);
1195 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1196 lprof = class_get_profile(profilenm);
1197 if (lprof == NULL) {
1198 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1199 " read from the MGS. Does that filesystem "
1200 "exist?\n", profilenm);
1201 GOTO(out_debugfs, err = -EINVAL);
1203 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1204 lprof->lp_md, lprof->lp_dt);
1206 dt_len = strlen(lprof->lp_dt) + instlen + 2;
1207 OBD_ALLOC(dt, dt_len);
1209 GOTO(out_profile, err = -ENOMEM);
1210 snprintf(dt, dt_len - 1, "%s-%016lx", lprof->lp_dt, cfg_instance);
1212 md_len = strlen(lprof->lp_md) + instlen + 2;
1213 OBD_ALLOC(md, md_len);
1215 GOTO(out_free_dt, err = -ENOMEM);
1216 snprintf(md, md_len - 1, "%s-%016lx", lprof->lp_md, cfg_instance);
1218 /* connections, registrations, sb setup */
1219 err = client_common_fill_super(sb, md, dt);
1221 GOTO(out_free_md, err);
1223 sbi->ll_client_common_fill_super_succeeded = 1;
1227 OBD_FREE(md, md_len);
1230 OBD_FREE(dt, dt_len);
1233 class_put_profile(lprof);
1236 ll_debugfs_unregister_super(sb);
1243 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1244 LCONSOLE_WARN("Mounted %s\n", profilenm);
1246 } /* ll_fill_super */
1248 void ll_put_super(struct super_block *sb)
1250 struct config_llog_instance cfg, params_cfg;
1251 struct obd_device *obd;
1252 struct lustre_sb_info *lsi = s2lsi(sb);
1253 struct ll_sb_info *sbi = ll_s2sbi(sb);
1254 char *profilenm = get_profile_name(sb);
1255 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1257 int next, force = 1, rc = 0;
1261 GOTO(out_no_sbi, 0);
1263 /* Should replace instance_id with something better for ASLR */
1264 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1265 profilenm, cfg_instance, sb);
1267 cfg.cfg_instance = cfg_instance;
1268 lustre_end_log(sb, profilenm, &cfg);
1270 params_cfg.cfg_instance = cfg_instance;
1271 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1273 if (sbi->ll_md_exp) {
1274 obd = class_exp2obd(sbi->ll_md_exp);
1276 force = obd->obd_force;
1279 /* Wait for unstable pages to be committed to stable storage */
1281 rc = l_wait_event_abortable(
1282 sbi->ll_cache->ccc_unstable_waitq,
1283 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0);
1286 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1287 if (force == 0 && rc != -ERESTARTSYS)
1288 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1290 /* We need to set force before the lov_disconnect in
1291 * lustre_common_put_super, since l_d cleans up osc's as well.
1295 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1297 obd->obd_force = force;
1301 if (sbi->ll_client_common_fill_super_succeeded) {
1302 /* Only if client_common_fill_super succeeded */
1303 client_common_put_super(sb);
1307 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)))
1308 class_manual_cleanup(obd);
1310 if (sbi->ll_flags & LL_SBI_VERBOSE)
1311 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1314 class_del_profile(profilenm);
1316 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1317 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1318 bdi_destroy(&lsi->lsi_bdi);
1319 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1324 lsi->lsi_llsbi = NULL;
1326 lustre_common_put_super(sb);
1328 cl_env_cache_purge(~0);
1330 module_put(THIS_MODULE);
1333 } /* client_put_super */
1335 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1337 struct inode *inode = NULL;
1339 /* NOTE: we depend on atomic igrab() -bzzz */
1340 lock_res_and_lock(lock);
1341 if (lock->l_resource->lr_lvb_inode) {
1342 struct ll_inode_info * lli;
1343 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1344 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1345 inode = igrab(lock->l_resource->lr_lvb_inode);
1347 inode = lock->l_resource->lr_lvb_inode;
1348 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1349 D_WARNING, lock, "lr_lvb_inode %p is "
1350 "bogus: magic %08x",
1351 lock->l_resource->lr_lvb_inode,
1352 lli->lli_inode_magic);
1356 unlock_res_and_lock(lock);
1360 void ll_dir_clear_lsm_md(struct inode *inode)
1362 struct ll_inode_info *lli = ll_i2info(inode);
1364 LASSERT(S_ISDIR(inode->i_mode));
1366 if (lli->lli_lsm_md) {
1367 lmv_free_memmd(lli->lli_lsm_md);
1368 lli->lli_lsm_md = NULL;
1371 if (lli->lli_default_lsm_md) {
1372 lmv_free_memmd(lli->lli_default_lsm_md);
1373 lli->lli_default_lsm_md = NULL;
1377 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1378 const struct lu_fid *fid,
1379 struct lustre_md *md)
1381 struct ll_sb_info *sbi = ll_s2sbi(sb);
1382 struct mdt_body *body = md->body;
1383 struct inode *inode;
1387 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1388 inode = iget_locked(sb, ino);
1389 if (inode == NULL) {
1390 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1391 sbi->ll_fsname, PFID(fid));
1392 RETURN(ERR_PTR(-ENOENT));
1395 if (inode->i_state & I_NEW) {
1396 struct ll_inode_info *lli = ll_i2info(inode);
1397 struct lmv_stripe_md *lsm = md->lmv;
1399 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1400 (body->mbo_mode & S_IFMT);
1401 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1404 inode->i_mtime.tv_sec = 0;
1405 inode->i_atime.tv_sec = 0;
1406 inode->i_ctime.tv_sec = 0;
1409 #ifdef HAVE_BACKING_DEV_INFO
1410 /* initializing backing dev info. */
1411 inode->i_mapping->backing_dev_info =
1412 &s2lsi(inode->i_sb)->lsi_bdi;
1414 inode->i_op = &ll_dir_inode_operations;
1415 inode->i_fop = &ll_dir_operations;
1416 lli->lli_fid = *fid;
1419 LASSERT(lsm != NULL);
1420 /* master object FID */
1421 lli->lli_pfid = body->mbo_fid1;
1422 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1423 lli, PFID(fid), PFID(&lli->lli_pfid));
1424 unlock_new_inode(inode);
1430 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1433 struct lmv_stripe_md *lsm = md->lmv;
1434 struct ll_inode_info *lli = ll_i2info(inode);
1437 LASSERT(lsm != NULL);
1439 CDEBUG(D_INODE, "%s: "DFID" set dir layout:\n",
1440 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1441 lsm_md_dump(D_INODE, lsm);
1443 if (!lmv_dir_striped(lsm))
1446 /* XXX sigh, this lsm_root initialization should be in
1447 * LMV layer, but it needs ll_iget right now, so we
1448 * put this here right now. */
1449 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1450 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1451 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1453 if (!fid_is_sane(fid))
1456 /* Unfortunately ll_iget will call ll_update_inode,
1457 * where the initialization of slave inode is slightly
1458 * different, so it reset lsm_md to NULL to avoid
1459 * initializing lsm for slave inode. */
1460 lsm->lsm_md_oinfo[i].lmo_root =
1461 ll_iget_anon_dir(inode->i_sb, fid, md);
1462 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1463 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1465 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1467 iput(lsm->lsm_md_oinfo[i].lmo_root);
1468 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1474 lli->lli_lsm_md = lsm;
1479 static void ll_update_default_lsm_md(struct inode *inode, struct lustre_md *md)
1481 struct ll_inode_info *lli = ll_i2info(inode);
1483 if (!md->default_lmv) {
1484 /* clear default lsm */
1485 if (lli->lli_default_lsm_md) {
1486 down_write(&lli->lli_lsm_sem);
1487 if (lli->lli_default_lsm_md) {
1488 lmv_free_memmd(lli->lli_default_lsm_md);
1489 lli->lli_default_lsm_md = NULL;
1491 up_write(&lli->lli_lsm_sem);
1493 } else if (lli->lli_default_lsm_md) {
1494 /* update default lsm if it changes */
1495 down_read(&lli->lli_lsm_sem);
1496 if (lli->lli_default_lsm_md &&
1497 !lsm_md_eq(lli->lli_default_lsm_md, md->default_lmv)) {
1498 up_read(&lli->lli_lsm_sem);
1499 down_write(&lli->lli_lsm_sem);
1500 if (lli->lli_default_lsm_md)
1501 lmv_free_memmd(lli->lli_default_lsm_md);
1502 lli->lli_default_lsm_md = md->default_lmv;
1503 lsm_md_dump(D_INODE, md->default_lmv);
1504 md->default_lmv = NULL;
1505 up_write(&lli->lli_lsm_sem);
1507 up_read(&lli->lli_lsm_sem);
1510 /* init default lsm */
1511 down_write(&lli->lli_lsm_sem);
1512 lli->lli_default_lsm_md = md->default_lmv;
1513 lsm_md_dump(D_INODE, md->default_lmv);
1514 md->default_lmv = NULL;
1515 up_write(&lli->lli_lsm_sem);
1519 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1521 struct ll_inode_info *lli = ll_i2info(inode);
1522 struct lmv_stripe_md *lsm = md->lmv;
1523 struct cl_attr *attr;
1528 LASSERT(S_ISDIR(inode->i_mode));
1529 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1530 PFID(ll_inode2fid(inode)));
1532 /* update default LMV */
1533 if (md->default_lmv)
1534 ll_update_default_lsm_md(inode, md);
1537 * no striped information from request, lustre_md from req does not
1538 * include stripeEA, see ll_md_setattr()
1544 * normally dir layout doesn't change, only take read lock to check
1545 * that to avoid blocking other MD operations.
1547 down_read(&lli->lli_lsm_sem);
1549 /* some current lookup initialized lsm, and unchanged */
1550 if (lli->lli_lsm_md && lsm_md_eq(lli->lli_lsm_md, lsm))
1551 GOTO(unlock, rc = 0);
1553 /* if dir layout doesn't match, check whether version is increased,
1554 * which means layout is changed, this happens in dir split/merge and
1557 * foreign LMV should not change.
1559 if (lli->lli_lsm_md && lmv_dir_striped(lli->lli_lsm_md) &&
1560 lsm->lsm_md_layout_version <=
1561 lli->lli_lsm_md->lsm_md_layout_version) {
1562 CERROR("%s: "DFID" dir layout mismatch:\n",
1563 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1564 lsm_md_dump(D_ERROR, lli->lli_lsm_md);
1565 lsm_md_dump(D_ERROR, lsm);
1566 GOTO(unlock, rc = -EINVAL);
1569 up_read(&lli->lli_lsm_sem);
1570 down_write(&lli->lli_lsm_sem);
1571 /* clear existing lsm */
1572 if (lli->lli_lsm_md) {
1573 lmv_free_memmd(lli->lli_lsm_md);
1574 lli->lli_lsm_md = NULL;
1577 rc = ll_init_lsm_md(inode, md);
1578 up_write(&lli->lli_lsm_sem);
1583 /* set md->lmv to NULL, so the following free lustre_md will not free
1588 /* md_merge_attr() may take long, since lsm is already set, switch to
1591 down_read(&lli->lli_lsm_sem);
1593 if (!lmv_dir_striped(lli->lli_lsm_md))
1594 GOTO(unlock, rc = 0);
1596 OBD_ALLOC_PTR(attr);
1598 GOTO(unlock, rc = -ENOMEM);
1600 /* validate the lsm */
1601 rc = md_merge_attr(ll_i2mdexp(inode), lli->lli_lsm_md, attr,
1602 ll_md_blocking_ast);
1604 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1605 md->body->mbo_nlink = attr->cat_nlink;
1606 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1607 md->body->mbo_size = attr->cat_size;
1608 if (md->body->mbo_valid & OBD_MD_FLATIME)
1609 md->body->mbo_atime = attr->cat_atime;
1610 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1611 md->body->mbo_ctime = attr->cat_ctime;
1612 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1613 md->body->mbo_mtime = attr->cat_mtime;
1619 up_read(&lli->lli_lsm_sem);
1624 void ll_clear_inode(struct inode *inode)
1626 struct ll_inode_info *lli = ll_i2info(inode);
1627 struct ll_sb_info *sbi = ll_i2sbi(inode);
1631 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1632 PFID(ll_inode2fid(inode)), inode);
1634 if (S_ISDIR(inode->i_mode)) {
1635 /* these should have been cleared in ll_file_release */
1636 LASSERT(lli->lli_opendir_key == NULL);
1637 LASSERT(lli->lli_sai == NULL);
1638 LASSERT(lli->lli_opendir_pid == 0);
1640 pcc_inode_free(inode);
1643 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1645 LASSERT(!lli->lli_open_fd_write_count);
1646 LASSERT(!lli->lli_open_fd_read_count);
1647 LASSERT(!lli->lli_open_fd_exec_count);
1649 if (lli->lli_mds_write_och)
1650 ll_md_real_close(inode, FMODE_WRITE);
1651 if (lli->lli_mds_exec_och)
1652 ll_md_real_close(inode, FMODE_EXEC);
1653 if (lli->lli_mds_read_och)
1654 ll_md_real_close(inode, FMODE_READ);
1656 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1657 OBD_FREE(lli->lli_symlink_name,
1658 strlen(lli->lli_symlink_name) + 1);
1659 lli->lli_symlink_name = NULL;
1662 ll_xattr_cache_destroy(inode);
1664 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1665 forget_all_cached_acls(inode);
1666 if (lli->lli_posix_acl) {
1667 posix_acl_release(lli->lli_posix_acl);
1668 lli->lli_posix_acl = NULL;
1671 lli->lli_inode_magic = LLI_INODE_DEAD;
1673 if (S_ISDIR(inode->i_mode))
1674 ll_dir_clear_lsm_md(inode);
1675 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1676 LASSERT(list_empty(&lli->lli_agl_list));
1679 * XXX This has to be done before lsm is freed below, because
1680 * cl_object still uses inode lsm.
1682 cl_inode_fini(inode);
1684 llcrypt_put_encryption_info(inode);
1689 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1691 struct lustre_md md;
1692 struct inode *inode = dentry->d_inode;
1693 struct ll_sb_info *sbi = ll_i2sbi(inode);
1694 struct ptlrpc_request *request = NULL;
1698 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1699 LUSTRE_OPC_ANY, NULL);
1700 if (IS_ERR(op_data))
1701 RETURN(PTR_ERR(op_data));
1703 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1705 ptlrpc_req_finished(request);
1706 if (rc == -ENOENT) {
1708 /* Unlinked special device node? Or just a race?
1709 * Pretend we done everything. */
1710 if (!S_ISREG(inode->i_mode) &&
1711 !S_ISDIR(inode->i_mode)) {
1712 ia_valid = op_data->op_attr.ia_valid;
1713 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1714 rc = simple_setattr(dentry, &op_data->op_attr);
1715 op_data->op_attr.ia_valid = ia_valid;
1717 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1718 CERROR("md_setattr fails: rc = %d\n", rc);
1723 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1724 sbi->ll_md_exp, &md);
1726 ptlrpc_req_finished(request);
1730 ia_valid = op_data->op_attr.ia_valid;
1731 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1732 * cache is not cleared yet. */
1733 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1734 if (S_ISREG(inode->i_mode))
1736 rc = simple_setattr(dentry, &op_data->op_attr);
1737 if (S_ISREG(inode->i_mode))
1738 inode_unlock(inode);
1739 op_data->op_attr.ia_valid = ia_valid;
1741 rc = ll_update_inode(inode, &md);
1742 ptlrpc_req_finished(request);
1747 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1748 * object(s) determine the file size and mtime. Otherwise, the MDS will
1749 * keep these values until such a time that objects are allocated for it.
1750 * We do the MDS operations first, as it is checking permissions for us.
1751 * We don't to the MDS RPC if there is nothing that we want to store there,
1752 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1753 * going to do an RPC anyways.
1755 * If we are doing a truncate, we will send the mtime and ctime updates
1756 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1757 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1760 * In case of HSMimport, we only set attr on MDS.
1762 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr,
1763 enum op_xvalid xvalid, bool hsm_import)
1765 struct inode *inode = dentry->d_inode;
1766 struct ll_inode_info *lli = ll_i2info(inode);
1767 struct md_op_data *op_data = NULL;
1768 ktime_t kstart = ktime_get();
1773 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1774 "valid %x, hsm_import %d\n",
1775 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid),
1776 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1779 if (attr->ia_valid & ATTR_SIZE) {
1780 /* Check new size against VFS/VM file size limit and rlimit */
1781 rc = inode_newsize_ok(inode, attr->ia_size);
1785 /* The maximum Lustre file size is variable, based on the
1786 * OST maximum object size and number of stripes. This
1787 * needs another check in addition to the VFS check above. */
1788 if (attr->ia_size > ll_file_maxbytes(inode)) {
1789 CDEBUG(D_INODE,"file "DFID" too large %llu > %llu\n",
1790 PFID(&lli->lli_fid), attr->ia_size,
1791 ll_file_maxbytes(inode));
1795 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1798 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1799 if (attr->ia_valid & TIMES_SET_FLAGS) {
1800 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1801 !cfs_capable(CFS_CAP_FOWNER))
1805 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1806 if (!(xvalid & OP_XVALID_CTIME_SET) &&
1807 (attr->ia_valid & ATTR_CTIME)) {
1808 attr->ia_ctime = current_time(inode);
1809 xvalid |= OP_XVALID_CTIME_SET;
1811 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1812 (attr->ia_valid & ATTR_ATIME)) {
1813 attr->ia_atime = current_time(inode);
1814 attr->ia_valid |= ATTR_ATIME_SET;
1816 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1817 (attr->ia_valid & ATTR_MTIME)) {
1818 attr->ia_mtime = current_time(inode);
1819 attr->ia_valid |= ATTR_MTIME_SET;
1822 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1823 CDEBUG(D_INODE, "setting mtime %lld, ctime %lld, now = %lld\n",
1824 (s64)attr->ia_mtime.tv_sec, (s64)attr->ia_ctime.tv_sec,
1825 ktime_get_real_seconds());
1827 if (S_ISREG(inode->i_mode))
1828 inode_unlock(inode);
1830 /* We always do an MDS RPC, even if we're only changing the size;
1831 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1833 OBD_ALLOC_PTR(op_data);
1834 if (op_data == NULL)
1835 GOTO(out, rc = -ENOMEM);
1837 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1838 /* If we are changing file size, file content is
1839 * modified, flag it.
1841 xvalid |= OP_XVALID_OWNEROVERRIDE;
1842 op_data->op_bias |= MDS_DATA_MODIFIED;
1843 ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
1846 if (attr->ia_valid & ATTR_FILE) {
1847 struct ll_file_data *fd = attr->ia_file->private_data;
1849 if (fd->fd_lease_och)
1850 op_data->op_bias |= MDS_TRUNC_KEEP_LEASE;
1853 op_data->op_attr = *attr;
1854 op_data->op_xvalid = xvalid;
1856 rc = ll_md_setattr(dentry, op_data);
1860 if (!S_ISREG(inode->i_mode) || hsm_import)
1863 if (attr->ia_valid & (ATTR_SIZE | ATTR_ATIME | ATTR_ATIME_SET |
1864 ATTR_MTIME | ATTR_MTIME_SET | ATTR_CTIME) ||
1865 xvalid & OP_XVALID_CTIME_SET) {
1866 bool cached = false;
1868 rc = pcc_inode_setattr(inode, attr, &cached);
1871 CERROR("%s: PCC inode "DFID" setattr failed: "
1873 ll_i2sbi(inode)->ll_fsname,
1874 PFID(&lli->lli_fid), rc);
1878 /* For truncate and utimes sending attributes to OSTs,
1879 * setting mtime/atime to the past will be performed
1880 * under PW [0:EOF] extent lock (new_size:EOF for
1881 * truncate). It may seem excessive to send mtime/atime
1882 * updates to OSTs when not setting times to past, but
1883 * it is necessary due to possible time
1884 * de-synchronization between MDT inode and OST objects
1886 rc = cl_setattr_ost(lli->lli_clob, attr, xvalid, 0);
1890 /* If the file was restored, it needs to set dirty flag.
1892 * We've already sent MDS_DATA_MODIFIED flag in
1893 * ll_md_setattr() for truncate. However, the MDT refuses to
1894 * set the HS_DIRTY flag on released files, so we have to set
1895 * it again if the file has been restored. Please check how
1896 * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
1898 * Please notice that if the file is not released, the previous
1899 * MDS_DATA_MODIFIED has taken effect and usually
1900 * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
1901 * This way we can save an RPC for common open + trunc
1903 if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
1904 struct hsm_state_set hss = {
1905 .hss_valid = HSS_SETMASK,
1906 .hss_setmask = HS_DIRTY,
1910 rc2 = ll_hsm_state_set(inode, &hss);
1911 /* truncate and write can happen at the same time, so that
1912 * the file can be set modified even though the file is not
1913 * restored from released state, and ll_hsm_state_set() is
1914 * not applicable for the file, and rc2 < 0 is normal in this
1917 CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
1918 PFID(ll_inode2fid(inode)), rc2);
1923 if (op_data != NULL)
1924 ll_finish_md_op_data(op_data);
1926 if (S_ISREG(inode->i_mode)) {
1928 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1929 inode_dio_wait(inode);
1930 /* Once we've got the i_mutex, it's safe to set the S_NOSEC
1931 * flag. ll_update_inode (called from ll_md_setattr), clears
1932 * inode flags, so there is a gap where S_NOSEC is not set.
1933 * This can cause a writer to take the i_mutex unnecessarily,
1934 * but this is safe to do and should be rare. */
1935 inode_has_no_xattr(inode);
1939 ll_stats_ops_tally(ll_i2sbi(inode), attr->ia_valid & ATTR_SIZE ?
1940 LPROC_LL_TRUNC : LPROC_LL_SETATTR,
1941 ktime_us_delta(ktime_get(), kstart));
1946 int ll_setattr(struct dentry *de, struct iattr *attr)
1948 int mode = de->d_inode->i_mode;
1949 enum op_xvalid xvalid = 0;
1951 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1952 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1953 xvalid |= OP_XVALID_OWNEROVERRIDE;
1955 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1956 (ATTR_SIZE|ATTR_MODE)) &&
1957 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1958 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1959 !(attr->ia_mode & S_ISGID))))
1960 attr->ia_valid |= ATTR_FORCE;
1962 if ((attr->ia_valid & ATTR_MODE) &&
1964 !(attr->ia_mode & S_ISUID) &&
1965 !(attr->ia_valid & ATTR_KILL_SUID))
1966 attr->ia_valid |= ATTR_KILL_SUID;
1968 if ((attr->ia_valid & ATTR_MODE) &&
1969 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1970 !(attr->ia_mode & S_ISGID) &&
1971 !(attr->ia_valid & ATTR_KILL_SGID))
1972 attr->ia_valid |= ATTR_KILL_SGID;
1974 return ll_setattr_raw(de, attr, xvalid, false);
1977 int ll_statfs_internal(struct ll_sb_info *sbi, struct obd_statfs *osfs,
1980 struct obd_statfs obd_osfs = { 0 };
1985 max_age = ktime_get_seconds() - sbi->ll_statfs_max_age;
1987 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1988 flags |= OBD_STATFS_NODELAY;
1990 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1994 osfs->os_type = LL_SUPER_MAGIC;
1996 CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
1997 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree, osfs->os_files);
1999 if (osfs->os_state & OS_STATFS_SUM)
2002 rc = obd_statfs(NULL, sbi->ll_dt_exp, &obd_osfs, max_age, flags);
2003 if (rc) /* Possibly a filesystem with no OSTs. Report MDT totals. */
2006 CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
2007 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
2010 osfs->os_bsize = obd_osfs.os_bsize;
2011 osfs->os_blocks = obd_osfs.os_blocks;
2012 osfs->os_bfree = obd_osfs.os_bfree;
2013 osfs->os_bavail = obd_osfs.os_bavail;
2015 /* If we have _some_ OSTs, but don't have as many free objects on the
2016 * OSTs as inodes on the MDTs, reduce the reported number of inodes
2017 * to compensate, so that the "inodes in use" number is correct.
2018 * This should be kept in sync with lod_statfs() behaviour.
2020 if (obd_osfs.os_files && obd_osfs.os_ffree < osfs->os_ffree) {
2021 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
2023 osfs->os_ffree = obd_osfs.os_ffree;
2030 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
2032 struct super_block *sb = de->d_sb;
2033 struct obd_statfs osfs;
2034 __u64 fsid = huge_encode_dev(sb->s_dev);
2035 ktime_t kstart = ktime_get();
2038 CDEBUG(D_VFSTRACE, "VFS Op:sb=%s (%p)\n", sb->s_id, sb);
2040 /* Some amount of caching on the client is allowed */
2041 rc = ll_statfs_internal(ll_s2sbi(sb), &osfs, OBD_STATFS_SUM);
2045 statfs_unpack(sfs, &osfs);
2047 /* We need to downshift for all 32-bit kernels, because we can't
2048 * tell if the kernel is being called via sys_statfs64() or not.
2049 * Stop before overflowing f_bsize - in which case it is better
2050 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
2051 if (sizeof(long) < 8) {
2052 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
2055 osfs.os_blocks >>= 1;
2056 osfs.os_bfree >>= 1;
2057 osfs.os_bavail >>= 1;
2061 sfs->f_blocks = osfs.os_blocks;
2062 sfs->f_bfree = osfs.os_bfree;
2063 sfs->f_bavail = osfs.os_bavail;
2064 sfs->f_fsid.val[0] = (__u32)fsid;
2065 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
2067 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STATFS,
2068 ktime_us_delta(ktime_get(), kstart));
2073 void ll_inode_size_lock(struct inode *inode)
2075 struct ll_inode_info *lli;
2077 LASSERT(!S_ISDIR(inode->i_mode));
2079 lli = ll_i2info(inode);
2080 mutex_lock(&lli->lli_size_mutex);
2083 void ll_inode_size_unlock(struct inode *inode)
2085 struct ll_inode_info *lli;
2087 lli = ll_i2info(inode);
2088 mutex_unlock(&lli->lli_size_mutex);
2091 void ll_update_inode_flags(struct inode *inode, int ext_flags)
2093 /* do not clear encryption flag */
2094 ext_flags |= ll_inode_to_ext_flags(inode->i_flags) & LUSTRE_ENCRYPT_FL;
2095 inode->i_flags = ll_ext_to_inode_flags(ext_flags);
2096 if (ext_flags & LUSTRE_PROJINHERIT_FL)
2097 ll_file_set_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT);
2099 ll_file_clear_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT);
2102 int ll_update_inode(struct inode *inode, struct lustre_md *md)
2104 struct ll_inode_info *lli = ll_i2info(inode);
2105 struct mdt_body *body = md->body;
2106 struct ll_sb_info *sbi = ll_i2sbi(inode);
2109 if (body->mbo_valid & OBD_MD_FLEASIZE) {
2110 rc = cl_file_inode_init(inode, md);
2115 if (S_ISDIR(inode->i_mode)) {
2116 rc = ll_update_lsm_md(inode, md);
2121 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
2122 if (body->mbo_valid & OBD_MD_FLACL) {
2123 spin_lock(&lli->lli_lock);
2124 if (lli->lli_posix_acl)
2125 posix_acl_release(lli->lli_posix_acl);
2126 lli->lli_posix_acl = md->posix_acl;
2127 spin_unlock(&lli->lli_lock);
2130 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
2131 sbi->ll_flags & LL_SBI_32BIT_API);
2132 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
2134 if (body->mbo_valid & OBD_MD_FLATIME) {
2135 if (body->mbo_atime > inode->i_atime.tv_sec)
2136 inode->i_atime.tv_sec = body->mbo_atime;
2137 lli->lli_atime = body->mbo_atime;
2140 if (body->mbo_valid & OBD_MD_FLMTIME) {
2141 if (body->mbo_mtime > inode->i_mtime.tv_sec) {
2143 "setting ino %lu mtime from %lld to %llu\n",
2144 inode->i_ino, (s64)inode->i_mtime.tv_sec,
2146 inode->i_mtime.tv_sec = body->mbo_mtime;
2148 lli->lli_mtime = body->mbo_mtime;
2151 if (body->mbo_valid & OBD_MD_FLCTIME) {
2152 if (body->mbo_ctime > inode->i_ctime.tv_sec)
2153 inode->i_ctime.tv_sec = body->mbo_ctime;
2154 lli->lli_ctime = body->mbo_ctime;
2157 if (body->mbo_valid & OBD_MD_FLBTIME)
2158 lli->lli_btime = body->mbo_btime;
2160 /* Clear i_flags to remove S_NOSEC before permissions are updated */
2161 if (body->mbo_valid & OBD_MD_FLFLAGS)
2162 ll_update_inode_flags(inode, body->mbo_flags);
2163 if (body->mbo_valid & OBD_MD_FLMODE)
2164 inode->i_mode = (inode->i_mode & S_IFMT) |
2165 (body->mbo_mode & ~S_IFMT);
2167 if (body->mbo_valid & OBD_MD_FLTYPE)
2168 inode->i_mode = (inode->i_mode & ~S_IFMT) |
2169 (body->mbo_mode & S_IFMT);
2171 LASSERT(inode->i_mode != 0);
2172 if (body->mbo_valid & OBD_MD_FLUID)
2173 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
2174 if (body->mbo_valid & OBD_MD_FLGID)
2175 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
2176 if (body->mbo_valid & OBD_MD_FLPROJID)
2177 lli->lli_projid = body->mbo_projid;
2178 if (body->mbo_valid & OBD_MD_FLNLINK)
2179 set_nlink(inode, body->mbo_nlink);
2180 if (body->mbo_valid & OBD_MD_FLRDEV)
2181 inode->i_rdev = old_decode_dev(body->mbo_rdev);
2183 if (body->mbo_valid & OBD_MD_FLID) {
2184 /* FID shouldn't be changed! */
2185 if (fid_is_sane(&lli->lli_fid)) {
2186 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
2187 "Trying to change FID "DFID
2188 " to the "DFID", inode "DFID"(%p)\n",
2189 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
2190 PFID(ll_inode2fid(inode)), inode);
2192 lli->lli_fid = body->mbo_fid1;
2196 LASSERT(fid_seq(&lli->lli_fid) != 0);
2198 lli->lli_attr_valid = body->mbo_valid;
2199 if (body->mbo_valid & OBD_MD_FLSIZE) {
2200 i_size_write(inode, body->mbo_size);
2202 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
2203 PFID(ll_inode2fid(inode)),
2204 (unsigned long long)body->mbo_size);
2206 if (body->mbo_valid & OBD_MD_FLBLOCKS)
2207 inode->i_blocks = body->mbo_blocks;
2209 if (body->mbo_valid & OBD_MD_FLLAZYSIZE)
2210 lli->lli_lazysize = body->mbo_size;
2211 if (body->mbo_valid & OBD_MD_FLLAZYBLOCKS)
2212 lli->lli_lazyblocks = body->mbo_blocks;
2215 if (body->mbo_valid & OBD_MD_TSTATE) {
2216 /* Set LLIF_FILE_RESTORING if restore ongoing and
2217 * clear it when done to ensure to start again
2218 * glimpsing updated attrs
2220 if (body->mbo_t_state & MS_RESTORE)
2221 ll_file_set_flag(lli, LLIF_FILE_RESTORING);
2223 ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
2229 int ll_read_inode2(struct inode *inode, void *opaque)
2231 struct lustre_md *md = opaque;
2232 struct ll_inode_info *lli = ll_i2info(inode);
2236 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2237 PFID(&lli->lli_fid), inode);
2239 /* Core attributes from the MDS first. This is a new inode, and
2240 * the VFS doesn't zero times in the core inode so we have to do
2241 * it ourselves. They will be overwritten by either MDS or OST
2242 * attributes - we just need to make sure they aren't newer.
2244 inode->i_mtime.tv_sec = 0;
2245 inode->i_atime.tv_sec = 0;
2246 inode->i_ctime.tv_sec = 0;
2248 rc = ll_update_inode(inode, md);
2252 /* OIDEBUG(inode); */
2254 #ifdef HAVE_BACKING_DEV_INFO
2255 /* initializing backing dev info. */
2256 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2258 if (S_ISREG(inode->i_mode)) {
2259 struct ll_sb_info *sbi = ll_i2sbi(inode);
2260 inode->i_op = &ll_file_inode_operations;
2261 inode->i_fop = sbi->ll_fop;
2262 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2264 } else if (S_ISDIR(inode->i_mode)) {
2265 inode->i_op = &ll_dir_inode_operations;
2266 inode->i_fop = &ll_dir_operations;
2268 } else if (S_ISLNK(inode->i_mode)) {
2269 inode->i_op = &ll_fast_symlink_inode_operations;
2272 inode->i_op = &ll_special_inode_operations;
2274 init_special_inode(inode, inode->i_mode,
2283 void ll_delete_inode(struct inode *inode)
2285 struct ll_inode_info *lli = ll_i2info(inode);
2286 struct address_space *mapping = &inode->i_data;
2287 unsigned long nrpages;
2288 unsigned long flags;
2292 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL) {
2293 /* It is last chance to write out dirty pages,
2294 * otherwise we may lose data while umount.
2296 * If i_nlink is 0 then just discard data. This is safe because
2297 * local inode gets i_nlink 0 from server only for the last
2298 * unlink, so that file is not opened somewhere else
2300 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, inode->i_nlink ?
2301 CL_FSYNC_LOCAL : CL_FSYNC_DISCARD, 1);
2303 truncate_inode_pages_final(mapping);
2305 /* Workaround for LU-118: Note nrpages may not be totally updated when
2306 * truncate_inode_pages() returns, as there can be a page in the process
2307 * of deletion (inside __delete_from_page_cache()) in the specified
2308 * range. Thus mapping->nrpages can be non-zero when this function
2309 * returns even after truncation of the whole mapping. Only do this if
2310 * npages isn't already zero.
2312 nrpages = mapping->nrpages;
2314 ll_xa_lock_irqsave(&mapping->i_pages, flags);
2315 nrpages = mapping->nrpages;
2316 ll_xa_unlock_irqrestore(&mapping->i_pages, flags);
2317 } /* Workaround end */
2319 LASSERTF(nrpages == 0, "%s: inode="DFID"(%p) nrpages=%lu, "
2320 "see https://jira.whamcloud.com/browse/LU-118\n",
2321 ll_i2sbi(inode)->ll_fsname,
2322 PFID(ll_inode2fid(inode)), inode, nrpages);
2324 ll_clear_inode(inode);
2330 int ll_iocontrol(struct inode *inode, struct file *file,
2331 unsigned int cmd, unsigned long arg)
2333 struct ll_sb_info *sbi = ll_i2sbi(inode);
2334 struct ptlrpc_request *req = NULL;
2339 case FS_IOC_GETFLAGS: {
2340 struct mdt_body *body;
2341 struct md_op_data *op_data;
2343 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2344 0, 0, LUSTRE_OPC_ANY,
2346 if (IS_ERR(op_data))
2347 RETURN(PTR_ERR(op_data));
2349 op_data->op_valid = OBD_MD_FLFLAGS;
2350 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2351 ll_finish_md_op_data(op_data);
2353 CERROR("%s: failure inode "DFID": rc = %d\n",
2354 sbi->ll_md_exp->exp_obd->obd_name,
2355 PFID(ll_inode2fid(inode)), rc);
2359 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2361 flags = body->mbo_flags;
2363 ptlrpc_req_finished(req);
2365 RETURN(put_user(flags, (int __user *)arg));
2367 case FS_IOC_SETFLAGS: {
2369 struct md_op_data *op_data;
2370 struct cl_object *obj;
2371 struct fsxattr fa = { 0 };
2373 if (get_user(flags, (int __user *)arg))
2376 fa.fsx_projid = ll_i2info(inode)->lli_projid;
2377 if (flags & LUSTRE_PROJINHERIT_FL)
2378 fa.fsx_xflags = FS_XFLAG_PROJINHERIT;
2380 rc = ll_ioctl_check_project(inode, &fa);
2384 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2385 LUSTRE_OPC_ANY, NULL);
2386 if (IS_ERR(op_data))
2387 RETURN(PTR_ERR(op_data));
2389 op_data->op_attr_flags = flags;
2390 op_data->op_xvalid |= OP_XVALID_FLAGS;
2391 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2392 ll_finish_md_op_data(op_data);
2393 ptlrpc_req_finished(req);
2397 ll_update_inode_flags(inode, flags);
2399 obj = ll_i2info(inode)->lli_clob;
2403 OBD_ALLOC_PTR(attr);
2407 rc = cl_setattr_ost(obj, attr, OP_XVALID_FLAGS, flags);
2419 int ll_flush_ctx(struct inode *inode)
2421 struct ll_sb_info *sbi = ll_i2sbi(inode);
2423 CDEBUG(D_SEC, "flush context for user %d\n",
2424 from_kuid(&init_user_ns, current_uid()));
2426 obd_set_info_async(NULL, sbi->ll_md_exp,
2427 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2429 obd_set_info_async(NULL, sbi->ll_dt_exp,
2430 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2435 /* umount -f client means force down, don't save state */
2436 void ll_umount_begin(struct super_block *sb)
2438 struct ll_sb_info *sbi = ll_s2sbi(sb);
2439 struct obd_device *obd;
2440 struct obd_ioctl_data *ioc_data;
2444 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2445 sb->s_count, atomic_read(&sb->s_active));
2447 obd = class_exp2obd(sbi->ll_md_exp);
2449 CERROR("Invalid MDC connection handle %#llx\n",
2450 sbi->ll_md_exp->exp_handle.h_cookie);
2456 obd = class_exp2obd(sbi->ll_dt_exp);
2458 CERROR("Invalid LOV connection handle %#llx\n",
2459 sbi->ll_dt_exp->exp_handle.h_cookie);
2465 OBD_ALLOC_PTR(ioc_data);
2467 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2468 sizeof *ioc_data, ioc_data, NULL);
2470 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2471 sizeof *ioc_data, ioc_data, NULL);
2473 OBD_FREE_PTR(ioc_data);
2476 /* Really, we'd like to wait until there are no requests outstanding,
2477 * and then continue. For now, we just periodically checking for vfs
2478 * to decrement mnt_cnt and hope to finish it within 10sec.
2482 !may_umount(sbi->ll_mnt.mnt)) {
2490 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2492 struct ll_sb_info *sbi = ll_s2sbi(sb);
2493 char *profilenm = get_profile_name(sb);
2497 if ((*flags & MS_RDONLY) != (sb->s_flags & SB_RDONLY)) {
2498 read_only = *flags & MS_RDONLY;
2499 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2500 sizeof(KEY_READ_ONLY),
2501 KEY_READ_ONLY, sizeof(read_only),
2504 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2505 profilenm, read_only ?
2506 "read-only" : "read-write", err);
2511 sb->s_flags |= SB_RDONLY;
2513 sb->s_flags &= ~SB_RDONLY;
2515 if (sbi->ll_flags & LL_SBI_VERBOSE)
2516 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2517 read_only ? "read-only" : "read-write");
2523 * Cleanup the open handle that is cached on MDT-side.
2525 * For open case, the client side open handling thread may hit error
2526 * after the MDT grant the open. Under such case, the client should
2527 * send close RPC to the MDT as cleanup; otherwise, the open handle
2528 * on the MDT will be leaked there until the client umount or evicted.
2530 * In further, if someone unlinked the file, because the open handle
2531 * holds the reference on such file/object, then it will block the
2532 * subsequent threads that want to locate such object via FID.
2534 * \param[in] sb super block for this file-system
2535 * \param[in] open_req pointer to the original open request
2537 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
2539 struct mdt_body *body;
2540 struct md_op_data *op_data;
2541 struct ptlrpc_request *close_req = NULL;
2542 struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
2545 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
2546 OBD_ALLOC_PTR(op_data);
2547 if (op_data == NULL) {
2548 CWARN("%s: cannot allocate op_data to release open handle for "
2549 DFID"\n", ll_s2sbi(sb)->ll_fsname, PFID(&body->mbo_fid1));
2554 op_data->op_fid1 = body->mbo_fid1;
2555 op_data->op_open_handle = body->mbo_open_handle;
2556 op_data->op_mod_time = ktime_get_real_seconds();
2557 md_close(exp, op_data, NULL, &close_req);
2558 ptlrpc_req_finished(close_req);
2559 ll_finish_md_op_data(op_data);
2564 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2565 struct super_block *sb, struct lookup_intent *it)
2567 struct ll_sb_info *sbi = NULL;
2568 struct lustre_md md = { NULL };
2569 bool default_lmv_deleted = false;
2574 LASSERT(*inode || sb);
2575 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2576 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2577 sbi->ll_md_exp, &md);
2582 * clear default_lmv only if intent_getattr reply doesn't contain it.
2583 * but it needs to be done after iget, check this early because
2584 * ll_update_lsm_md() may change md.
2586 if (it && (it->it_op & (IT_LOOKUP | IT_GETATTR)) &&
2587 S_ISDIR(md.body->mbo_mode) && !md.default_lmv)
2588 default_lmv_deleted = true;
2591 rc = ll_update_inode(*inode, &md);
2595 LASSERT(sb != NULL);
2598 * At this point server returns to client's same fid as client
2599 * generated for creating. So using ->fid1 is okay here.
2601 if (!fid_is_sane(&md.body->mbo_fid1)) {
2602 CERROR("%s: Fid is insane "DFID"\n",
2604 PFID(&md.body->mbo_fid1));
2605 GOTO(out, rc = -EINVAL);
2608 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2609 sbi->ll_flags & LL_SBI_32BIT_API),
2611 if (IS_ERR(*inode)) {
2612 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
2614 posix_acl_release(md.posix_acl);
2615 md.posix_acl = NULL;
2618 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2620 CERROR("new_inode -fatal: rc %d\n", rc);
2625 /* Handling piggyback layout lock.
2626 * Layout lock can be piggybacked by getattr and open request.
2627 * The lsm can be applied to inode only if it comes with a layout lock
2628 * otherwise correct layout may be overwritten, for example:
2629 * 1. proc1: mdt returns a lsm but not granting layout
2630 * 2. layout was changed by another client
2631 * 3. proc2: refresh layout and layout lock granted
2632 * 4. proc1: to apply a stale layout */
2633 if (it != NULL && it->it_lock_mode != 0) {
2634 struct lustre_handle lockh;
2635 struct ldlm_lock *lock;
2637 lockh.cookie = it->it_lock_handle;
2638 lock = ldlm_handle2lock(&lockh);
2639 LASSERT(lock != NULL);
2640 if (ldlm_has_layout(lock)) {
2641 struct cl_object_conf conf;
2643 memset(&conf, 0, sizeof(conf));
2644 conf.coc_opc = OBJECT_CONF_SET;
2645 conf.coc_inode = *inode;
2646 conf.coc_lock = lock;
2647 conf.u.coc_layout = md.layout;
2648 (void)ll_layout_conf(*inode, &conf);
2650 LDLM_LOCK_PUT(lock);
2653 if (default_lmv_deleted)
2654 ll_update_default_lsm_md(*inode, &md);
2659 /* cleanup will be done if necessary */
2660 md_free_lustre_md(sbi->ll_md_exp, &md);
2662 if (rc != 0 && it != NULL && it->it_op & IT_OPEN) {
2663 ll_intent_drop_lock(it);
2664 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2670 int ll_obd_statfs(struct inode *inode, void __user *arg)
2672 struct ll_sb_info *sbi = NULL;
2673 struct obd_export *exp;
2675 struct obd_ioctl_data *data = NULL;
2679 if (!inode || !(sbi = ll_i2sbi(inode)))
2680 GOTO(out_statfs, rc = -EINVAL);
2682 rc = obd_ioctl_getdata(&buf, &len, arg);
2684 GOTO(out_statfs, rc);
2687 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2688 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2689 GOTO(out_statfs, rc = -EINVAL);
2691 if (data->ioc_inllen1 != sizeof(__u32) ||
2692 data->ioc_inllen2 != sizeof(__u32) ||
2693 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2694 data->ioc_plen2 != sizeof(struct obd_uuid))
2695 GOTO(out_statfs, rc = -EINVAL);
2697 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2698 if (type & LL_STATFS_LMV)
2699 exp = sbi->ll_md_exp;
2700 else if (type & LL_STATFS_LOV)
2701 exp = sbi->ll_dt_exp;
2703 GOTO(out_statfs, rc = -ENODEV);
2705 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2707 GOTO(out_statfs, rc);
2709 OBD_FREE_LARGE(buf, len);
2714 * this is normally called in ll_fini_md_op_data(), but sometimes it needs to
2715 * be called early to avoid deadlock.
2717 void ll_unlock_md_op_lsm(struct md_op_data *op_data)
2719 if (op_data->op_mea2_sem) {
2720 up_read(op_data->op_mea2_sem);
2721 op_data->op_mea2_sem = NULL;
2724 if (op_data->op_mea1_sem) {
2725 up_read(op_data->op_mea1_sem);
2726 op_data->op_mea1_sem = NULL;
2730 /* this function prepares md_op_data hint for passing it down to MD stack. */
2731 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
2732 struct inode *i1, struct inode *i2,
2733 const char *name, size_t namelen,
2734 __u32 mode, enum md_op_code opc,
2737 LASSERT(i1 != NULL);
2740 /* Do not reuse namelen for something else. */
2742 return ERR_PTR(-EINVAL);
2744 if (namelen > ll_i2sbi(i1)->ll_namelen)
2745 return ERR_PTR(-ENAMETOOLONG);
2747 if (!lu_name_is_valid_2(name, namelen))
2748 return ERR_PTR(-EINVAL);
2751 if (op_data == NULL)
2752 OBD_ALLOC_PTR(op_data);
2754 if (op_data == NULL)
2755 return ERR_PTR(-ENOMEM);
2757 ll_i2gids(op_data->op_suppgids, i1, i2);
2758 op_data->op_fid1 = *ll_inode2fid(i1);
2759 op_data->op_code = opc;
2761 if (S_ISDIR(i1->i_mode)) {
2762 down_read(&ll_i2info(i1)->lli_lsm_sem);
2763 op_data->op_mea1_sem = &ll_i2info(i1)->lli_lsm_sem;
2764 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2765 op_data->op_default_mea1 = ll_i2info(i1)->lli_default_lsm_md;
2769 op_data->op_fid2 = *ll_inode2fid(i2);
2770 if (S_ISDIR(i2->i_mode)) {
2772 down_read(&ll_i2info(i2)->lli_lsm_sem);
2773 op_data->op_mea2_sem =
2774 &ll_i2info(i2)->lli_lsm_sem;
2776 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2779 fid_zero(&op_data->op_fid2);
2782 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2783 op_data->op_cli_flags |= CLI_HASH64;
2785 if (ll_need_32bit_api(ll_i2sbi(i1)))
2786 op_data->op_cli_flags |= CLI_API32;
2788 op_data->op_name = name;
2789 op_data->op_namelen = namelen;
2790 op_data->op_mode = mode;
2791 op_data->op_mod_time = ktime_get_real_seconds();
2792 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2793 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2794 op_data->op_cap = cfs_curproc_cap_pack();
2795 op_data->op_mds = 0;
2796 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2797 filename_is_volatile(name, namelen, &op_data->op_mds)) {
2798 op_data->op_bias |= MDS_CREATE_VOLATILE;
2800 op_data->op_data = data;
2805 void ll_finish_md_op_data(struct md_op_data *op_data)
2807 ll_unlock_md_op_lsm(op_data);
2808 security_release_secctx(op_data->op_file_secctx,
2809 op_data->op_file_secctx_size);
2810 OBD_FREE_PTR(op_data);
2813 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2815 struct ll_sb_info *sbi;
2817 LASSERT(seq && dentry);
2818 sbi = ll_s2sbi(dentry->d_sb);
2820 if (sbi->ll_flags & LL_SBI_NOLCK)
2821 seq_puts(seq, ",nolock");
2823 /* "flock" is the default since 2.13, but it wasn't for many years,
2824 * so it is still useful to print this to show it is enabled.
2825 * Start to print "noflock" so it is now clear when flock is disabled.
2827 if (sbi->ll_flags & LL_SBI_FLOCK)
2828 seq_puts(seq, ",flock");
2829 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2830 seq_puts(seq, ",localflock");
2832 seq_puts(seq, ",noflock");
2834 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2835 seq_puts(seq, ",user_xattr");
2837 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2838 seq_puts(seq, ",lazystatfs");
2840 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2841 seq_puts(seq, ",user_fid2path");
2843 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
2844 seq_puts(seq, ",always_ping");
2846 if (ll_sbi_has_test_dummy_encryption(sbi))
2847 seq_puts(seq, ",test_dummy_encryption");
2849 if (ll_sbi_has_encrypt(sbi))
2850 seq_puts(seq, ",encrypt");
2852 seq_puts(seq, ",noencrypt");
2858 * Get obd name by cmd, and copy out to user space
2860 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2862 struct ll_sb_info *sbi = ll_i2sbi(inode);
2863 struct obd_device *obd;
2866 if (cmd == OBD_IOC_GETDTNAME)
2867 obd = class_exp2obd(sbi->ll_dt_exp);
2868 else if (cmd == OBD_IOC_GETMDNAME)
2869 obd = class_exp2obd(sbi->ll_md_exp);
2876 if (copy_to_user((void __user *)arg, obd->obd_name,
2877 strlen(obd->obd_name) + 1))
2883 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2890 p.mnt = current->fs->root.mnt;
2892 path = d_path(&p, buf, bufsize);
2897 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2899 char *buf, *path = NULL;
2900 struct dentry *dentry = NULL;
2901 struct inode *inode = page->mapping->host;
2903 /* this can be called inside spin lock so use GFP_ATOMIC. */
2904 buf = (char *)__get_free_page(GFP_ATOMIC);
2906 dentry = d_find_alias(page->mapping->host);
2908 path = ll_d_path(dentry, buf, PAGE_SIZE);
2911 /* The below message is checked in recovery-small.sh test_24b */
2913 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2914 "(rc %d)\n", ll_i2sbi(inode)->ll_fsname,
2915 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2916 PFID(ll_inode2fid(inode)),
2917 (path && !IS_ERR(path)) ? path : "", ioret);
2923 free_page((unsigned long)buf);
2926 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
2927 struct lov_user_md **kbuf)
2929 struct lov_user_md lum;
2933 if (copy_from_user(&lum, md, sizeof(lum)))
2936 lum_size = ll_lov_user_md_size(&lum);
2940 OBD_ALLOC_LARGE(*kbuf, lum_size);
2944 if (copy_from_user(*kbuf, md, lum_size) != 0) {
2945 OBD_FREE_LARGE(*kbuf, lum_size);
2953 * Compute llite root squash state after a change of root squash
2954 * configuration setting or add/remove of a lnet nid
2956 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2958 struct root_squash_info *squash = &sbi->ll_squash;
2961 struct lnet_process_id id;
2963 /* Update norootsquash flag */
2964 spin_lock(&squash->rsi_lock);
2965 if (list_empty(&squash->rsi_nosquash_nids))
2966 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2968 /* Do not apply root squash as soon as one of our NIDs is
2969 * in the nosquash_nids list */
2972 while (LNetGetId(i++, &id) != -ENOENT) {
2973 if (id.nid == LNET_NID_LO_0)
2975 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2981 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2983 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2985 spin_unlock(&squash->rsi_lock);
2989 * Parse linkea content to extract information about a given hardlink
2991 * \param[in] ldata - Initialized linkea data
2992 * \param[in] linkno - Link identifier
2993 * \param[out] parent_fid - The entry's parent FID
2994 * \param[out] ln - Entry name destination buffer
2996 * \retval 0 on success
2997 * \retval Appropriate negative error code on failure
2999 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
3000 struct lu_fid *parent_fid, struct lu_name *ln)
3006 rc = linkea_init_with_rec(ldata);
3010 if (linkno >= ldata->ld_leh->leh_reccount)
3011 /* beyond last link */
3014 linkea_first_entry(ldata);
3015 for (idx = 0; ldata->ld_lee != NULL; idx++) {
3016 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
3021 linkea_next_entry(ldata);
3031 * Get parent FID and name of an identified link. Operation is performed for
3032 * a given link number, letting the caller iterate over linkno to list one or
3033 * all links of an entry.
3035 * \param[in] file - File descriptor against which to perform the operation
3036 * \param[in,out] arg - User-filled structure containing the linkno to operate
3037 * on and the available size. It is eventually filled with
3038 * the requested information or left untouched on error
3040 * \retval - 0 on success
3041 * \retval - Appropriate negative error code on failure
3043 int ll_getparent(struct file *file, struct getparent __user *arg)
3045 struct inode *inode = file_inode(file);
3046 struct linkea_data *ldata;
3047 struct lu_buf buf = LU_BUF_NULL;
3049 struct lu_fid parent_fid;
3056 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
3057 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
3060 if (get_user(name_size, &arg->gp_name_size))
3063 if (get_user(linkno, &arg->gp_linkno))
3066 if (name_size > PATH_MAX)
3069 OBD_ALLOC(ldata, sizeof(*ldata));
3073 rc = linkea_data_new(ldata, &buf);
3075 GOTO(ldata_free, rc);
3077 rc = ll_xattr_list(inode, XATTR_NAME_LINK, XATTR_TRUSTED_T, buf.lb_buf,
3078 buf.lb_len, OBD_MD_FLXATTR);
3082 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
3086 if (ln.ln_namelen >= name_size)
3087 GOTO(lb_free, rc = -EOVERFLOW);
3089 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
3090 GOTO(lb_free, rc = -EFAULT);
3092 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
3093 GOTO(lb_free, rc = -EFAULT);
3095 if (put_user('\0', arg->gp_name + ln.ln_namelen))
3096 GOTO(lb_free, rc = -EFAULT);
3101 OBD_FREE(ldata, sizeof(*ldata));