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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2014, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/llite/llite_lib.c
38 * Lustre Light Super operations
41 #define DEBUG_SUBSYSTEM S_LLITE
43 #include <linux/module.h>
44 #include <linux/statfs.h>
45 #include <linux/types.h>
46 #include <linux/version.h>
49 #include <lustre_ioctl.h>
50 #include <lustre_ha.h>
51 #include <lustre_dlm.h>
52 #include <lprocfs_status.h>
53 #include <lustre_disk.h>
54 #include <lustre_param.h>
55 #include <lustre_log.h>
56 #include <cl_object.h>
57 #include <obd_cksum.h>
58 #include "llite_internal.h"
60 struct kmem_cache *ll_file_data_slab;
62 static struct list_head ll_super_blocks = LIST_HEAD_INIT(ll_super_blocks);
63 static DEFINE_SPINLOCK(ll_sb_lock);
66 #define log2(n) ffz(~(n))
69 static struct ll_sb_info *ll_init_sbi(void)
71 struct ll_sb_info *sbi = NULL;
73 unsigned long lru_page_max;
83 spin_lock_init(&sbi->ll_lock);
84 mutex_init(&sbi->ll_lco.lco_lock);
85 spin_lock_init(&sbi->ll_pp_extent_lock);
86 spin_lock_init(&sbi->ll_process_lock);
87 sbi->ll_rw_stats_on = 0;
90 pages = si.totalram - si.totalhigh;
91 lru_page_max = pages / 2;
93 /* initialize ll_cache data */
94 sbi->ll_cache = cl_cache_init(lru_page_max);
95 if (sbi->ll_cache == NULL) {
96 OBD_FREE(sbi, sizeof(*sbi));
100 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
101 SBI_DEFAULT_READAHEAD_MAX);
102 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
103 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
104 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
105 INIT_LIST_HEAD(&sbi->ll_conn_chain);
106 INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
108 ll_generate_random_uuid(uuid);
109 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
110 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
112 spin_lock(&ll_sb_lock);
113 list_add_tail(&sbi->ll_list, &ll_super_blocks);
114 spin_unlock(&ll_sb_lock);
116 sbi->ll_flags |= LL_SBI_VERBOSE;
117 #ifdef ENABLE_CHECKSUM
118 sbi->ll_flags |= LL_SBI_CHECKSUM;
121 #ifdef HAVE_LRU_RESIZE_SUPPORT
122 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
125 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
126 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
128 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
132 /* metadata statahead is enabled by default */
133 sbi->ll_sa_max = LL_SA_RPC_DEF;
134 atomic_set(&sbi->ll_sa_total, 0);
135 atomic_set(&sbi->ll_sa_wrong, 0);
136 atomic_set(&sbi->ll_sa_running, 0);
137 atomic_set(&sbi->ll_agl_total, 0);
138 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
141 sbi->ll_squash.rsi_uid = 0;
142 sbi->ll_squash.rsi_gid = 0;
143 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
144 init_rwsem(&sbi->ll_squash.rsi_sem);
149 static void ll_free_sbi(struct super_block *sb)
151 struct ll_sb_info *sbi = ll_s2sbi(sb);
155 spin_lock(&ll_sb_lock);
156 list_del(&sbi->ll_list);
157 spin_unlock(&ll_sb_lock);
158 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
159 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
160 if (sbi->ll_cache != NULL) {
161 cl_cache_decref(sbi->ll_cache);
162 sbi->ll_cache = NULL;
164 OBD_FREE(sbi, sizeof(*sbi));
169 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
170 struct vfsmount *mnt)
172 struct inode *root = NULL;
173 struct ll_sb_info *sbi = ll_s2sbi(sb);
174 struct obd_device *obd;
175 struct obd_capa *oc = NULL;
176 struct obd_statfs *osfs = NULL;
177 struct ptlrpc_request *request = NULL;
178 struct obd_connect_data *data = NULL;
179 struct obd_uuid *uuid;
180 struct md_op_data *op_data;
181 struct lustre_md lmd;
183 int size, err, checksum;
186 obd = class_name2obd(md);
188 CERROR("MD %s: not setup or attached\n", md);
202 /* indicate the features supported by this client */
203 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
204 OBD_CONNECT_ATTRFID |
205 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
206 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
207 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
208 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
209 OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR |
210 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH|
211 OBD_CONNECT_EINPROGRESS |
212 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
213 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS |
214 OBD_CONNECT_MAX_EASIZE |
215 OBD_CONNECT_FLOCK_DEAD |
216 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
217 OBD_CONNECT_OPEN_BY_FID |
218 OBD_CONNECT_DIR_STRIPE;
220 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
221 data->ocd_connect_flags |= OBD_CONNECT_SOM;
223 #ifdef HAVE_LRU_RESIZE_SUPPORT
224 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
225 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
227 #ifdef CONFIG_FS_POSIX_ACL
228 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
231 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
232 /* flag mdc connection as lightweight, only used for test
233 * purpose, use with care */
234 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
236 data->ocd_ibits_known = MDS_INODELOCK_FULL;
237 data->ocd_version = LUSTRE_VERSION_CODE;
239 if (sb->s_flags & MS_RDONLY)
240 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
241 if (sbi->ll_flags & LL_SBI_USER_XATTR)
242 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
244 #ifdef HAVE_MS_FLOCK_LOCK
245 /* force vfs to use lustre handler for flock() calls - bug 10743 */
246 sb->s_flags |= MS_FLOCK_LOCK;
248 #ifdef MS_HAS_NEW_AOPS
249 sb->s_flags |= MS_HAS_NEW_AOPS;
252 if (sbi->ll_flags & LL_SBI_FLOCK)
253 sbi->ll_fop = &ll_file_operations_flock;
254 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
255 sbi->ll_fop = &ll_file_operations;
257 sbi->ll_fop = &ll_file_operations_noflock;
260 data->ocd_connect_flags |= OBD_CONNECT_REAL;
261 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
262 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
264 data->ocd_brw_size = MD_MAX_BRW_SIZE;
266 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
268 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
269 "recovery, of which this client is not a "
270 "part. Please wait for recovery to complete,"
271 " abort, or time out.\n", md);
274 CERROR("cannot connect to %s: rc = %d\n", md, err);
278 sbi->ll_md_exp->exp_connect_data = *data;
280 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
281 LUSTRE_SEQ_METADATA);
283 CERROR("%s: Can't init metadata layer FID infrastructure, "
284 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
288 /* For mount, we only need fs info from MDT0, and also in DNE, it
289 * can make sure the client can be mounted as long as MDT0 is
291 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
292 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
293 OBD_STATFS_FOR_MDT0);
295 GOTO(out_md_fid, err);
297 /* This needs to be after statfs to ensure connect has finished.
298 * Note that "data" does NOT contain the valid connect reply.
299 * If connecting to a 1.8 server there will be no LMV device, so
300 * we can access the MDC export directly and exp_connect_flags will
301 * be non-zero, but if accessing an upgraded 2.1 server it will
302 * have the correct flags filled in.
303 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
304 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
305 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
306 valid != CLIENT_CONNECT_MDT_REQD) {
309 OBD_ALLOC_WAIT(buf, PAGE_CACHE_SIZE);
310 obd_connect_flags2str(buf, PAGE_CACHE_SIZE,
311 valid ^ CLIENT_CONNECT_MDT_REQD, ",");
312 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
313 "feature(s) needed for correct operation "
314 "of this client (%s). Please upgrade "
315 "server or downgrade client.\n",
316 sbi->ll_md_exp->exp_obd->obd_name, buf);
317 OBD_FREE(buf, PAGE_CACHE_SIZE);
318 GOTO(out_md_fid, err = -EPROTO);
321 size = sizeof(*data);
322 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
323 KEY_CONN_DATA, &size, data, NULL);
325 CERROR("%s: Get connect data failed: rc = %d\n",
326 sbi->ll_md_exp->exp_obd->obd_name, err);
327 GOTO(out_md_fid, err);
330 LASSERT(osfs->os_bsize);
331 sb->s_blocksize = osfs->os_bsize;
332 sb->s_blocksize_bits = log2(osfs->os_bsize);
333 sb->s_magic = LL_SUPER_MAGIC;
334 sb->s_maxbytes = MAX_LFS_FILESIZE;
335 sbi->ll_namelen = osfs->os_namelen;
336 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
338 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
339 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
340 LCONSOLE_INFO("Disabling user_xattr feature because "
341 "it is not supported on the server\n");
342 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
345 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
347 sb->s_flags |= MS_POSIXACL;
349 sbi->ll_flags |= LL_SBI_ACL;
351 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
353 sb->s_flags &= ~MS_POSIXACL;
355 sbi->ll_flags &= ~LL_SBI_ACL;
358 if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
359 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
360 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
361 LCONSOLE_INFO("client is set as remote by default.\n");
364 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
365 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
366 LCONSOLE_INFO("client claims to be remote, but server "
367 "rejected, forced to be local.\n");
371 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
372 LCONSOLE_INFO("client enabled MDS capability!\n");
373 sbi->ll_flags |= LL_SBI_MDS_CAPA;
376 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
377 LCONSOLE_INFO("client enabled OSS capability!\n");
378 sbi->ll_flags |= LL_SBI_OSS_CAPA;
381 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
382 sbi->ll_flags |= LL_SBI_64BIT_HASH;
384 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
385 sbi->ll_md_brw_pages = data->ocd_brw_size >> PAGE_CACHE_SHIFT;
387 sbi->ll_md_brw_pages = 1;
389 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
390 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
392 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
393 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
394 LCONSOLE_INFO("%s: disabling xattr cache due to "
395 "unknown maximum xattr size.\n", dt);
397 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
398 sbi->ll_xattr_cache_enabled = 1;
402 obd = class_name2obd(dt);
404 CERROR("DT %s: not setup or attached\n", dt);
405 GOTO(out_md_fid, err = -ENODEV);
408 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
409 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
410 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
411 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
412 OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
413 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
414 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
415 OBD_CONNECT_MAXBYTES |
416 OBD_CONNECT_EINPROGRESS |
417 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
418 OBD_CONNECT_LAYOUTLOCK |
419 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK;
421 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
422 data->ocd_connect_flags |= OBD_CONNECT_SOM;
424 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
425 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
426 * disabled by default, because it can still be enabled on the
427 * fly via /proc. As a consequence, we still need to come to an
428 * agreement on the supported algorithms at connect time */
429 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
431 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
432 data->ocd_cksum_types = OBD_CKSUM_ADLER;
434 data->ocd_cksum_types = cksum_types_supported_client();
437 #ifdef HAVE_LRU_RESIZE_SUPPORT
438 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
440 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
441 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
443 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
444 "ocd_grant: %d\n", data->ocd_connect_flags,
445 data->ocd_version, data->ocd_grant);
447 obd->obd_upcall.onu_owner = &sbi->ll_lco;
448 obd->obd_upcall.onu_upcall = cl_ocd_update;
450 data->ocd_brw_size = DT_MAX_BRW_SIZE;
452 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data,
455 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
456 "recovery, of which this client is not a "
457 "part. Please wait for recovery to "
458 "complete, abort, or time out.\n", dt);
461 CERROR("%s: Cannot connect to %s: rc = %d\n",
462 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
466 sbi->ll_dt_exp->exp_connect_data = *data;
468 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
469 LUSTRE_SEQ_METADATA);
471 CERROR("%s: Can't init data layer FID infrastructure, "
472 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
476 mutex_lock(&sbi->ll_lco.lco_lock);
477 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
478 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
479 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
480 mutex_unlock(&sbi->ll_lco.lco_lock);
482 fid_zero(&sbi->ll_root_fid);
483 err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
485 CERROR("cannot mds_connect: rc = %d\n", err);
486 GOTO(out_lock_cn_cb, err);
488 if (!fid_is_sane(&sbi->ll_root_fid)) {
489 CERROR("%s: Invalid root fid "DFID" during mount\n",
490 sbi->ll_md_exp->exp_obd->obd_name,
491 PFID(&sbi->ll_root_fid));
492 GOTO(out_lock_cn_cb, err = -EINVAL);
494 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
496 sb->s_op = &lustre_super_operations;
497 #if THREAD_SIZE >= 8192 /*b=17630*/
498 sb->s_export_op = &lustre_export_operations;
502 * XXX: move this to after cbd setup? */
503 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA |
505 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
506 valid |= OBD_MD_FLRMTPERM;
507 else if (sbi->ll_flags & LL_SBI_ACL)
508 valid |= OBD_MD_FLACL;
510 OBD_ALLOC_PTR(op_data);
512 GOTO(out_lock_cn_cb, err = -ENOMEM);
514 op_data->op_fid1 = sbi->ll_root_fid;
515 op_data->op_mode = 0;
516 op_data->op_capa1 = oc;
517 op_data->op_valid = valid;
519 err = md_getattr(sbi->ll_md_exp, op_data, &request);
522 OBD_FREE_PTR(op_data);
524 CERROR("%s: md_getattr failed for root: rc = %d\n",
525 sbi->ll_md_exp->exp_obd->obd_name, err);
526 GOTO(out_lock_cn_cb, err);
529 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
530 sbi->ll_md_exp, &lmd);
532 CERROR("failed to understand root inode md: rc = %d\n", err);
533 ptlrpc_req_finished(request);
534 GOTO(out_lock_cn_cb, err);
537 LASSERT(fid_is_sane(&sbi->ll_root_fid));
538 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
539 sbi->ll_flags & LL_SBI_32BIT_API),
541 md_free_lustre_md(sbi->ll_md_exp, &lmd);
542 ptlrpc_req_finished(request);
546 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
547 #ifdef CONFIG_FS_POSIX_ACL
549 posix_acl_release(lmd.posix_acl);
550 lmd.posix_acl = NULL;
553 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
555 CERROR("lustre_lite: bad iget4 for root\n");
559 err = ll_close_thread_start(&sbi->ll_lcq);
561 CERROR("cannot start close thread: rc %d\n", err);
565 #ifdef CONFIG_FS_POSIX_ACL
566 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
567 rct_init(&sbi->ll_rct);
568 et_init(&sbi->ll_et);
572 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
573 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
574 KEY_CHECKSUM, sizeof(checksum), &checksum,
578 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
579 KEY_CACHE_SET, sizeof(*sbi->ll_cache),
580 sbi->ll_cache, NULL);
582 sb->s_root = d_make_root(root);
583 if (sb->s_root == NULL) {
584 CERROR("%s: can't make root dentry\n",
585 ll_get_fsname(sb, NULL, 0));
586 GOTO(out_root, err = -ENOMEM);
588 #ifdef HAVE_DCACHE_LOCK
589 sb->s_root->d_op = &ll_d_ops;
592 sbi->ll_sdev_orig = sb->s_dev;
594 /* We set sb->s_dev equal on all lustre clients in order to support
595 * NFS export clustering. NFSD requires that the FSID be the same
597 /* s_dev is also used in lt_compare() to compare two fs, but that is
598 * only a node-local comparison. */
599 uuid = obd_get_uuid(sbi->ll_md_exp);
601 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
607 if (proc_lustre_fs_root != NULL) {
608 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
611 CERROR("%s: could not register mount in lprocfs: "
612 "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
622 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
624 obd_disconnect(sbi->ll_dt_exp);
625 sbi->ll_dt_exp = NULL;
627 obd_fid_fini(sbi->ll_md_exp->exp_obd);
629 obd_disconnect(sbi->ll_md_exp);
630 sbi->ll_md_exp = NULL;
639 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
643 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
645 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
646 KEY_MAX_EASIZE, &size, lmmsize, NULL);
648 CERROR("Get max mdsize error rc %d\n", rc);
654 * Get the value of the default_easize parameter.
656 * \see client_obd::cl_default_mds_easize
658 * \param[in] sbi superblock info for this filesystem
659 * \param[out] lmmsize pointer to storage location for value
661 * \retval 0 on success
662 * \retval negative negated errno on failure
664 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
669 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
670 KEY_DEFAULT_EASIZE, &size, lmmsize, NULL);
672 CERROR("Get default mdsize error rc %d\n", rc);
678 * Set the default_easize parameter to the given value.
680 * \see client_obd::cl_default_mds_easize
682 * \param[in] sbi superblock info for this filesystem
683 * \param[in] lmmsize the size to set
685 * \retval 0 on success
686 * \retval negative negated errno on failure
688 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
692 if (lmmsize < sizeof(struct lov_mds_md) ||
693 lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
696 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
697 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
698 sizeof(int), &lmmsize, NULL);
703 int ll_get_max_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
708 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_COOKIESIZE),
709 KEY_MAX_COOKIESIZE, &size, lmmsize, NULL);
711 CERROR("Get max cookiesize error rc %d\n", rc);
716 int ll_get_default_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
721 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_COOKIESIZE),
722 KEY_DEFAULT_COOKIESIZE, &size, lmmsize, NULL);
724 CERROR("Get default cookiesize error rc %d\n", rc);
729 static void ll_dump_inode(struct inode *inode)
731 struct ll_d_hlist_node *tmp;
732 int dentry_count = 0;
734 LASSERT(inode != NULL);
736 ll_d_hlist_for_each(tmp, &inode->i_dentry)
739 CERROR("%s: inode %p dump: dev=%s fid="DFID
740 " mode=%o count=%u, %d dentries\n",
741 ll_get_fsname(inode->i_sb, NULL, 0), inode,
742 ll_i2mdexp(inode)->exp_obd->obd_name, PFID(ll_inode2fid(inode)),
743 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
746 void lustre_dump_dentry(struct dentry *dentry, int recur)
748 struct list_head *tmp;
751 LASSERT(dentry != NULL);
753 list_for_each(tmp, &dentry->d_subdirs)
756 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
757 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
758 dentry->d_name.len, dentry->d_name.name,
759 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
760 dentry->d_parent, dentry->d_inode, ll_d_count(dentry),
761 dentry->d_flags, dentry->d_fsdata, subdirs);
762 if (dentry->d_inode != NULL)
763 ll_dump_inode(dentry->d_inode);
768 list_for_each(tmp, &dentry->d_subdirs) {
769 struct dentry *d = list_entry(tmp, struct dentry, d_u.d_child);
770 lustre_dump_dentry(d, recur - 1);
774 static void client_common_put_super(struct super_block *sb)
776 struct ll_sb_info *sbi = ll_s2sbi(sb);
779 #ifdef CONFIG_FS_POSIX_ACL
780 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
781 et_fini(&sbi->ll_et);
782 rct_fini(&sbi->ll_rct);
786 ll_close_thread_shutdown(sbi->ll_lcq);
790 list_del(&sbi->ll_conn_chain);
792 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
793 obd_disconnect(sbi->ll_dt_exp);
794 sbi->ll_dt_exp = NULL;
796 lprocfs_unregister_mountpoint(sbi);
798 obd_fid_fini(sbi->ll_md_exp->exp_obd);
799 obd_disconnect(sbi->ll_md_exp);
800 sbi->ll_md_exp = NULL;
805 void ll_kill_super(struct super_block *sb)
807 struct ll_sb_info *sbi;
811 if (!(sb->s_flags & MS_ACTIVE))
815 /* we need restore s_dev from changed for clustred NFS before put_super
816 * because new kernels have cached s_dev and change sb->s_dev in
817 * put_super not affected real removing devices */
819 sb->s_dev = sbi->ll_sdev_orig;
820 sbi->ll_umounting = 1;
822 /* wait running statahead threads to quit */
823 while (atomic_read(&sbi->ll_sa_running) > 0)
824 schedule_timeout_and_set_state(TASK_UNINTERRUPTIBLE,
825 msecs_to_jiffies(MSEC_PER_SEC >> 3));
831 static inline int ll_set_opt(const char *opt, char *data, int fl)
833 if (strncmp(opt, data, strlen(opt)) != 0)
839 /* non-client-specific mount options are parsed in lmd_parse */
840 static int ll_options(char *options, int *flags)
843 char *s1 = options, *s2;
849 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
852 CDEBUG(D_SUPER, "next opt=%s\n", s1);
853 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
858 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
863 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
868 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
873 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
878 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
883 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
888 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
893 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
899 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
904 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
909 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
914 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
919 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
924 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
929 tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW);
934 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
939 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
944 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
949 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
955 s2 = strchr(s1, ',');
963 void ll_lli_init(struct ll_inode_info *lli)
965 lli->lli_inode_magic = LLI_INODE_MAGIC;
967 lli->lli_ioepoch = 0;
968 lli->lli_maxbytes = MAX_LFS_FILESIZE;
969 spin_lock_init(&lli->lli_lock);
970 lli->lli_posix_acl = NULL;
971 lli->lli_remote_perms = NULL;
972 mutex_init(&lli->lli_rmtperm_mutex);
973 /* Do not set lli_fid, it has been initialized already. */
974 fid_zero(&lli->lli_pfid);
975 INIT_LIST_HEAD(&lli->lli_close_list);
976 INIT_LIST_HEAD(&lli->lli_oss_capas);
977 atomic_set(&lli->lli_open_count, 0);
978 lli->lli_mds_capa = NULL;
979 lli->lli_rmtperm_time = 0;
980 lli->lli_pending_och = NULL;
981 lli->lli_mds_read_och = NULL;
982 lli->lli_mds_write_och = NULL;
983 lli->lli_mds_exec_och = NULL;
984 lli->lli_open_fd_read_count = 0;
985 lli->lli_open_fd_write_count = 0;
986 lli->lli_open_fd_exec_count = 0;
987 mutex_init(&lli->lli_och_mutex);
988 spin_lock_init(&lli->lli_agl_lock);
989 lli->lli_has_smd = false;
990 spin_lock_init(&lli->lli_layout_lock);
991 ll_layout_version_set(lli, LL_LAYOUT_GEN_NONE);
992 lli->lli_clob = NULL;
994 init_rwsem(&lli->lli_xattrs_list_rwsem);
995 mutex_init(&lli->lli_xattrs_enq_lock);
997 LASSERT(lli->lli_vfs_inode.i_mode != 0);
998 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
999 mutex_init(&lli->lli_readdir_mutex);
1000 lli->lli_opendir_key = NULL;
1001 lli->lli_sai = NULL;
1002 spin_lock_init(&lli->lli_sa_lock);
1003 lli->lli_opendir_pid = 0;
1004 lli->lli_sa_enabled = 0;
1005 lli->lli_def_stripe_offset = -1;
1007 mutex_init(&lli->lli_size_mutex);
1008 lli->lli_symlink_name = NULL;
1009 init_rwsem(&lli->lli_trunc_sem);
1010 range_lock_tree_init(&lli->lli_write_tree);
1011 init_rwsem(&lli->lli_glimpse_sem);
1012 lli->lli_glimpse_time = 0;
1013 INIT_LIST_HEAD(&lli->lli_agl_list);
1014 lli->lli_agl_index = 0;
1015 lli->lli_async_rc = 0;
1017 mutex_init(&lli->lli_layout_mutex);
1020 static inline int ll_bdi_register(struct backing_dev_info *bdi)
1022 static atomic_t ll_bdi_num = ATOMIC_INIT(0);
1024 bdi->name = "lustre";
1025 return bdi_register(bdi, NULL, "lustre-%d",
1026 atomic_inc_return(&ll_bdi_num));
1029 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
1031 struct lustre_profile *lprof = NULL;
1032 struct lustre_sb_info *lsi = s2lsi(sb);
1033 struct ll_sb_info *sbi;
1034 char *dt = NULL, *md = NULL;
1035 char *profilenm = get_profile_name(sb);
1036 struct config_llog_instance *cfg;
1037 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1038 const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
1042 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
1048 try_module_get(THIS_MODULE);
1050 /* client additional sb info */
1051 lsi->lsi_llsbi = sbi = ll_init_sbi();
1053 module_put(THIS_MODULE);
1058 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
1060 GOTO(out_free, err);
1062 err = bdi_init(&lsi->lsi_bdi);
1064 GOTO(out_free, err);
1065 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1066 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1067 err = ll_bdi_register(&lsi->lsi_bdi);
1069 GOTO(out_free, err);
1071 sb->s_bdi = &lsi->lsi_bdi;
1072 #ifndef HAVE_DCACHE_LOCK
1073 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1074 sb->s_d_op = &ll_d_ops;
1077 /* Generate a string unique to this super, in case some joker tries
1078 to mount the same fs at two mount points.
1079 Use the address of the super itself.*/
1080 cfg->cfg_instance = sb;
1081 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1082 cfg->cfg_callback = class_config_llog_handler;
1083 /* set up client obds */
1084 err = lustre_process_log(sb, profilenm, cfg);
1086 GOTO(out_free, err);
1088 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1089 lprof = class_get_profile(profilenm);
1090 if (lprof == NULL) {
1091 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1092 " read from the MGS. Does that filesystem "
1093 "exist?\n", profilenm);
1094 GOTO(out_free, err = -EINVAL);
1096 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1097 lprof->lp_md, lprof->lp_dt);
1099 OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
1101 GOTO(out_free, err = -ENOMEM);
1102 sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
1104 OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
1106 GOTO(out_free, err = -ENOMEM);
1107 sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1109 /* connections, registrations, sb setup */
1110 err = client_common_fill_super(sb, md, dt, mnt);
1114 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1116 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1119 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1120 LCONSOLE_WARN("Mounted %s\n", profilenm);
1124 } /* ll_fill_super */
1126 void ll_put_super(struct super_block *sb)
1128 struct config_llog_instance cfg, params_cfg;
1129 struct obd_device *obd;
1130 struct lustre_sb_info *lsi = s2lsi(sb);
1131 struct ll_sb_info *sbi = ll_s2sbi(sb);
1132 char *profilenm = get_profile_name(sb);
1134 int next, force = 1, rc = 0;
1137 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1139 ll_print_capa_stat(sbi);
1141 cfg.cfg_instance = sb;
1142 lustre_end_log(sb, profilenm, &cfg);
1144 params_cfg.cfg_instance = sb;
1145 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1147 if (sbi->ll_md_exp) {
1148 obd = class_exp2obd(sbi->ll_md_exp);
1150 force = obd->obd_force;
1153 /* Wait for unstable pages to be committed to stable storage */
1155 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
1156 rc = l_wait_event(sbi->ll_cache->ccc_unstable_waitq,
1157 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0,
1161 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1162 if (force == 0 && rc != -EINTR)
1163 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1166 /* We need to set force before the lov_disconnect in
1167 lustre_common_put_super, since l_d cleans up osc's as well. */
1170 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1172 obd->obd_force = force;
1177 /* Only if client_common_fill_super succeeded */
1178 client_common_put_super(sb);
1182 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1183 class_manual_cleanup(obd);
1186 if (sbi->ll_flags & LL_SBI_VERBOSE)
1187 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1190 class_del_profile(profilenm);
1192 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1193 bdi_destroy(&lsi->lsi_bdi);
1194 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1198 lsi->lsi_llsbi = NULL;
1200 lustre_common_put_super(sb);
1202 cl_env_cache_purge(~0);
1204 module_put(THIS_MODULE);
1207 } /* client_put_super */
1209 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1211 struct inode *inode = NULL;
1213 /* NOTE: we depend on atomic igrab() -bzzz */
1214 lock_res_and_lock(lock);
1215 if (lock->l_resource->lr_lvb_inode) {
1216 struct ll_inode_info * lli;
1217 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1218 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1219 inode = igrab(lock->l_resource->lr_lvb_inode);
1221 inode = lock->l_resource->lr_lvb_inode;
1222 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1223 D_WARNING, lock, "lr_lvb_inode %p is "
1224 "bogus: magic %08x",
1225 lock->l_resource->lr_lvb_inode,
1226 lli->lli_inode_magic);
1230 unlock_res_and_lock(lock);
1234 static void ll_dir_clear_lsm_md(struct inode *inode)
1236 struct ll_inode_info *lli = ll_i2info(inode);
1238 LASSERT(S_ISDIR(inode->i_mode));
1240 if (lli->lli_lsm_md != NULL) {
1241 lmv_free_memmd(lli->lli_lsm_md);
1242 lli->lli_lsm_md = NULL;
1246 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1247 const struct lu_fid *fid,
1248 struct lustre_md *md)
1250 struct ll_sb_info *sbi = ll_s2sbi(sb);
1251 struct mdt_body *body = md->body;
1252 struct inode *inode;
1256 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1257 inode = iget_locked(sb, ino);
1258 if (inode == NULL) {
1259 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1260 ll_get_fsname(sb, NULL, 0), PFID(fid));
1261 RETURN(ERR_PTR(-ENOENT));
1264 if (inode->i_state & I_NEW) {
1265 struct ll_inode_info *lli = ll_i2info(inode);
1266 struct lmv_stripe_md *lsm = md->lmv;
1268 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1269 (body->mbo_mode & S_IFMT);
1270 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1273 LTIME_S(inode->i_mtime) = 0;
1274 LTIME_S(inode->i_atime) = 0;
1275 LTIME_S(inode->i_ctime) = 0;
1278 /* initializing backing dev info. */
1279 inode->i_mapping->backing_dev_info =
1280 &s2lsi(inode->i_sb)->lsi_bdi;
1281 inode->i_op = &ll_dir_inode_operations;
1282 inode->i_fop = &ll_dir_operations;
1283 lli->lli_fid = *fid;
1286 LASSERT(lsm != NULL);
1287 /* master object FID */
1288 lli->lli_pfid = body->mbo_fid1;
1289 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1290 lli, PFID(fid), PFID(&lli->lli_pfid));
1291 unlock_new_inode(inode);
1297 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1300 struct lmv_stripe_md *lsm = md->lmv;
1303 LASSERT(lsm != NULL);
1304 /* XXX sigh, this lsm_root initialization should be in
1305 * LMV layer, but it needs ll_iget right now, so we
1306 * put this here right now. */
1307 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1308 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1309 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1310 /* Unfortunately ll_iget will call ll_update_inode,
1311 * where the initialization of slave inode is slightly
1312 * different, so it reset lsm_md to NULL to avoid
1313 * initializing lsm for slave inode. */
1314 /* For migrating inode, master stripe and master object will
1315 * be same, so we only need assign this inode */
1316 if (lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION && i == 0)
1317 lsm->lsm_md_oinfo[i].lmo_root = inode;
1319 lsm->lsm_md_oinfo[i].lmo_root =
1320 ll_iget_anon_dir(inode->i_sb, fid, md);
1322 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1323 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1325 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1333 static inline int lli_lsm_md_eq(const struct lmv_stripe_md *lsm_md1,
1334 const struct lmv_stripe_md *lsm_md2)
1336 return lsm_md1->lsm_md_magic == lsm_md2->lsm_md_magic &&
1337 lsm_md1->lsm_md_stripe_count == lsm_md2->lsm_md_stripe_count &&
1338 lsm_md1->lsm_md_master_mdt_index ==
1339 lsm_md2->lsm_md_master_mdt_index &&
1340 lsm_md1->lsm_md_hash_type == lsm_md2->lsm_md_hash_type &&
1341 lsm_md1->lsm_md_layout_version ==
1342 lsm_md2->lsm_md_layout_version &&
1343 strcmp(lsm_md1->lsm_md_pool_name,
1344 lsm_md2->lsm_md_pool_name) == 0;
1347 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1349 struct ll_inode_info *lli = ll_i2info(inode);
1350 struct lmv_stripe_md *lsm = md->lmv;
1354 LASSERT(S_ISDIR(inode->i_mode));
1355 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1356 PFID(ll_inode2fid(inode)));
1358 /* no striped information from request. */
1360 if (lli->lli_lsm_md == NULL) {
1362 } else if (lli->lli_lsm_md->lsm_md_hash_type &
1363 LMV_HASH_FLAG_MIGRATION) {
1364 /* migration is done, the temporay MIGRATE layout has
1366 CDEBUG(D_INODE, DFID" finish migration.\n",
1367 PFID(ll_inode2fid(inode)));
1368 lmv_free_memmd(lli->lli_lsm_md);
1369 lli->lli_lsm_md = NULL;
1372 /* The lustre_md from req does not include stripeEA,
1373 * see ll_md_setattr */
1378 /* set the directory layout */
1379 if (lli->lli_lsm_md == NULL) {
1381 rc = ll_init_lsm_md(inode, md);
1385 lli->lli_lsm_md = lsm;
1386 /* set lsm_md to NULL, so the following free lustre_md
1387 * will not free this lsm */
1389 CDEBUG(D_INODE, "Set lsm %p magic %x to "DFID"\n", lsm,
1390 lsm->lsm_md_magic, PFID(ll_inode2fid(inode)));
1394 /* Compare the old and new stripe information */
1395 if (!lsm_md_eq(lli->lli_lsm_md, lsm)) {
1396 struct lmv_stripe_md *old_lsm = lli->lli_lsm_md;
1399 CERROR("%s: inode "DFID"(%p)'s lmv layout mismatch (%p)/(%p)"
1400 "magic:0x%x/0x%x stripe count: %d/%d master_mdt: %d/%d"
1401 "hash_type:0x%x/0x%x layout: 0x%x/0x%x pool:%s/%s\n",
1402 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1403 inode, lsm, old_lsm,
1404 lsm->lsm_md_magic, old_lsm->lsm_md_magic,
1405 lsm->lsm_md_stripe_count,
1406 old_lsm->lsm_md_stripe_count,
1407 lsm->lsm_md_master_mdt_index,
1408 old_lsm->lsm_md_master_mdt_index,
1409 lsm->lsm_md_hash_type, old_lsm->lsm_md_hash_type,
1410 lsm->lsm_md_layout_version,
1411 old_lsm->lsm_md_layout_version,
1412 lsm->lsm_md_pool_name,
1413 old_lsm->lsm_md_pool_name);
1415 for (idx = 0; idx < old_lsm->lsm_md_stripe_count; idx++) {
1416 CERROR("%s: sub FIDs in old lsm idx %d, old: "DFID"\n",
1417 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1418 PFID(&old_lsm->lsm_md_oinfo[idx].lmo_fid));
1421 for (idx = 0; idx < lsm->lsm_md_stripe_count; idx++) {
1422 CERROR("%s: sub FIDs in new lsm idx %d, new: "DFID"\n",
1423 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1424 PFID(&lsm->lsm_md_oinfo[idx].lmo_fid));
1433 void ll_clear_inode(struct inode *inode)
1435 struct ll_inode_info *lli = ll_i2info(inode);
1436 struct ll_sb_info *sbi = ll_i2sbi(inode);
1439 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1440 PFID(ll_inode2fid(inode)), inode);
1442 if (S_ISDIR(inode->i_mode)) {
1443 /* these should have been cleared in ll_file_release */
1444 LASSERT(lli->lli_opendir_key == NULL);
1445 LASSERT(lli->lli_sai == NULL);
1446 LASSERT(lli->lli_opendir_pid == 0);
1449 spin_lock(&lli->lli_lock);
1450 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1451 spin_unlock(&lli->lli_lock);
1452 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1454 LASSERT(!lli->lli_open_fd_write_count);
1455 LASSERT(!lli->lli_open_fd_read_count);
1456 LASSERT(!lli->lli_open_fd_exec_count);
1458 if (lli->lli_mds_write_och)
1459 ll_md_real_close(inode, FMODE_WRITE);
1460 if (lli->lli_mds_exec_och)
1461 ll_md_real_close(inode, FMODE_EXEC);
1462 if (lli->lli_mds_read_och)
1463 ll_md_real_close(inode, FMODE_READ);
1465 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1466 OBD_FREE(lli->lli_symlink_name,
1467 strlen(lli->lli_symlink_name) + 1);
1468 lli->lli_symlink_name = NULL;
1471 ll_xattr_cache_destroy(inode);
1473 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1474 LASSERT(lli->lli_posix_acl == NULL);
1475 if (lli->lli_remote_perms) {
1476 free_rmtperm_hash(lli->lli_remote_perms);
1477 lli->lli_remote_perms = NULL;
1480 #ifdef CONFIG_FS_POSIX_ACL
1481 else if (lli->lli_posix_acl) {
1482 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1483 LASSERT(lli->lli_remote_perms == NULL);
1484 posix_acl_release(lli->lli_posix_acl);
1485 lli->lli_posix_acl = NULL;
1488 lli->lli_inode_magic = LLI_INODE_DEAD;
1490 ll_clear_inode_capas(inode);
1491 if (S_ISDIR(inode->i_mode))
1492 ll_dir_clear_lsm_md(inode);
1493 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1494 LASSERT(list_empty(&lli->lli_agl_list));
1497 * XXX This has to be done before lsm is freed below, because
1498 * cl_object still uses inode lsm.
1500 cl_inode_fini(inode);
1501 lli->lli_has_smd = false;
1506 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
1507 struct md_open_data **mod)
1509 struct lustre_md md;
1510 struct inode *inode = dentry->d_inode;
1511 struct ll_sb_info *sbi = ll_i2sbi(inode);
1512 struct ptlrpc_request *request = NULL;
1516 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1517 LUSTRE_OPC_ANY, NULL);
1518 if (IS_ERR(op_data))
1519 RETURN(PTR_ERR(op_data));
1521 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1524 ptlrpc_req_finished(request);
1525 if (rc == -ENOENT) {
1527 /* Unlinked special device node? Or just a race?
1528 * Pretend we done everything. */
1529 if (!S_ISREG(inode->i_mode) &&
1530 !S_ISDIR(inode->i_mode)) {
1531 ia_valid = op_data->op_attr.ia_valid;
1532 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1533 rc = simple_setattr(dentry, &op_data->op_attr);
1534 op_data->op_attr.ia_valid = ia_valid;
1536 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1537 CERROR("md_setattr fails: rc = %d\n", rc);
1542 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1543 sbi->ll_md_exp, &md);
1545 ptlrpc_req_finished(request);
1549 ia_valid = op_data->op_attr.ia_valid;
1550 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1551 * cache is not cleared yet. */
1552 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1553 rc = simple_setattr(dentry, &op_data->op_attr);
1554 op_data->op_attr.ia_valid = ia_valid;
1556 /* Extract epoch data if obtained. */
1557 op_data->op_handle = md.body->mbo_handle;
1558 op_data->op_ioepoch = md.body->mbo_ioepoch;
1560 rc = ll_update_inode(inode, &md);
1561 ptlrpc_req_finished(request);
1566 /* Close IO epoch and send Size-on-MDS attribute update. */
1567 static int ll_setattr_done_writing(struct inode *inode,
1568 struct md_op_data *op_data,
1569 struct md_open_data *mod)
1571 struct ll_inode_info *lli = ll_i2info(inode);
1575 LASSERT(op_data != NULL);
1576 if (!S_ISREG(inode->i_mode))
1579 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1580 op_data->op_ioepoch, PFID(&lli->lli_fid));
1582 op_data->op_flags = MF_EPOCH_CLOSE;
1583 ll_done_writing_attr(inode, op_data);
1584 ll_pack_inode2opdata(inode, op_data, NULL);
1586 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1587 if (rc == -EAGAIN) {
1588 /* MDS has instructed us to obtain Size-on-MDS attribute
1589 * from OSTs and send setattr to back to MDS. */
1590 rc = ll_som_update(inode, op_data);
1592 CERROR("%s: inode "DFID" mdc truncate failed: rc = %d\n",
1593 ll_i2sbi(inode)->ll_md_exp->exp_obd->obd_name,
1594 PFID(ll_inode2fid(inode)), rc);
1599 static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
1601 struct obd_capa *capa;
1604 if (attr->ia_valid & ATTR_SIZE)
1605 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
1607 capa = ll_mdscapa_get(inode);
1609 rc = cl_setattr_ost(inode, attr, capa);
1611 if (attr->ia_valid & ATTR_SIZE)
1612 ll_truncate_free_capa(capa);
1619 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1620 * object(s) determine the file size and mtime. Otherwise, the MDS will
1621 * keep these values until such a time that objects are allocated for it.
1622 * We do the MDS operations first, as it is checking permissions for us.
1623 * We don't to the MDS RPC if there is nothing that we want to store there,
1624 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1625 * going to do an RPC anyways.
1627 * If we are doing a truncate, we will send the mtime and ctime updates
1628 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1629 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1632 * In case of HSMimport, we only set attr on MDS.
1634 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
1636 struct inode *inode = dentry->d_inode;
1637 struct ll_inode_info *lli = ll_i2info(inode);
1638 struct md_op_data *op_data = NULL;
1639 struct md_open_data *mod = NULL;
1640 bool file_is_released = false;
1641 int rc = 0, rc1 = 0;
1644 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1645 "valid %x, hsm_import %d\n",
1646 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1647 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1650 if (attr->ia_valid & ATTR_SIZE) {
1651 /* Check new size against VFS/VM file size limit and rlimit */
1652 rc = inode_newsize_ok(inode, attr->ia_size);
1656 /* The maximum Lustre file size is variable, based on the
1657 * OST maximum object size and number of stripes. This
1658 * needs another check in addition to the VFS check above. */
1659 if (attr->ia_size > ll_file_maxbytes(inode)) {
1660 CDEBUG(D_INODE,"file "DFID" too large %llu > "LPU64"\n",
1661 PFID(&lli->lli_fid), attr->ia_size,
1662 ll_file_maxbytes(inode));
1666 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1669 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1670 if (attr->ia_valid & TIMES_SET_FLAGS) {
1671 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1672 !cfs_capable(CFS_CAP_FOWNER))
1676 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1677 if (attr->ia_valid & ATTR_CTIME) {
1678 attr->ia_ctime = CFS_CURRENT_TIME;
1679 attr->ia_valid |= ATTR_CTIME_SET;
1681 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1682 (attr->ia_valid & ATTR_ATIME)) {
1683 attr->ia_atime = CFS_CURRENT_TIME;
1684 attr->ia_valid |= ATTR_ATIME_SET;
1686 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1687 (attr->ia_valid & ATTR_MTIME)) {
1688 attr->ia_mtime = CFS_CURRENT_TIME;
1689 attr->ia_valid |= ATTR_MTIME_SET;
1692 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1693 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1694 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1695 cfs_time_current_sec());
1697 /* We always do an MDS RPC, even if we're only changing the size;
1698 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1700 OBD_ALLOC_PTR(op_data);
1701 if (op_data == NULL)
1704 if (!S_ISDIR(inode->i_mode)) {
1705 if (attr->ia_valid & ATTR_SIZE)
1706 inode_dio_write_done(inode);
1707 mutex_unlock(&inode->i_mutex);
1710 /* truncate on a released file must failed with -ENODATA,
1711 * so size must not be set on MDS for released file
1712 * but other attributes must be set
1714 if (S_ISREG(inode->i_mode)) {
1715 struct lov_stripe_md *lsm;
1718 ll_layout_refresh(inode, &gen);
1719 lsm = ccc_inode_lsm_get(inode);
1720 if (lsm && lsm->lsm_pattern & LOV_PATTERN_F_RELEASED)
1721 file_is_released = true;
1722 ccc_inode_lsm_put(inode, lsm);
1724 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1725 if (file_is_released) {
1726 rc = ll_layout_restore(inode, 0, attr->ia_size);
1730 file_is_released = false;
1731 ll_layout_refresh(inode, &gen);
1734 /* If we are changing file size, file content is
1735 * modified, flag it. */
1736 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1737 spin_lock(&lli->lli_lock);
1738 lli->lli_flags |= LLIF_DATA_MODIFIED;
1739 spin_unlock(&lli->lli_lock);
1740 op_data->op_bias |= MDS_DATA_MODIFIED;
1744 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1746 /* Open epoch for truncate. */
1747 if (exp_connect_som(ll_i2mdexp(inode)) && !hsm_import &&
1748 (attr->ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
1749 op_data->op_flags = MF_EPOCH_OPEN;
1751 rc = ll_md_setattr(dentry, op_data, &mod);
1755 /* RPC to MDT is sent, cancel data modification flag */
1756 if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) {
1757 spin_lock(&lli->lli_lock);
1758 lli->lli_flags &= ~LLIF_DATA_MODIFIED;
1759 spin_unlock(&lli->lli_lock);
1762 ll_ioepoch_open(lli, op_data->op_ioepoch);
1763 if (!S_ISREG(inode->i_mode) || file_is_released)
1766 if (attr->ia_valid & (ATTR_SIZE |
1767 ATTR_ATIME | ATTR_ATIME_SET |
1768 ATTR_MTIME | ATTR_MTIME_SET)) {
1769 /* For truncate and utimes sending attributes to OSTs, setting
1770 * mtime/atime to the past will be performed under PW [0:EOF]
1771 * extent lock (new_size:EOF for truncate). It may seem
1772 * excessive to send mtime/atime updates to OSTs when not
1773 * setting times to past, but it is necessary due to possible
1774 * time de-synchronization between MDT inode and OST objects */
1775 if (attr->ia_valid & ATTR_SIZE)
1776 down_write(&lli->lli_trunc_sem);
1777 rc = ll_setattr_ost(inode, attr);
1778 if (attr->ia_valid & ATTR_SIZE)
1779 up_write(&lli->lli_trunc_sem);
1784 if (op_data->op_ioepoch) {
1785 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1789 ll_finish_md_op_data(op_data);
1791 if (!S_ISDIR(inode->i_mode)) {
1792 mutex_lock(&inode->i_mutex);
1793 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1794 inode_dio_wait(inode);
1797 ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
1798 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1803 int ll_setattr(struct dentry *de, struct iattr *attr)
1805 int mode = de->d_inode->i_mode;
1807 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1808 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1809 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1811 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1812 (ATTR_SIZE|ATTR_MODE)) &&
1813 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1814 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1815 !(attr->ia_mode & S_ISGID))))
1816 attr->ia_valid |= ATTR_FORCE;
1818 if ((attr->ia_valid & ATTR_MODE) &&
1820 !(attr->ia_mode & S_ISUID) &&
1821 !(attr->ia_valid & ATTR_KILL_SUID))
1822 attr->ia_valid |= ATTR_KILL_SUID;
1824 if ((attr->ia_valid & ATTR_MODE) &&
1825 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1826 !(attr->ia_mode & S_ISGID) &&
1827 !(attr->ia_valid & ATTR_KILL_SGID))
1828 attr->ia_valid |= ATTR_KILL_SGID;
1830 return ll_setattr_raw(de, attr, false);
1833 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1834 __u64 max_age, __u32 flags)
1836 struct ll_sb_info *sbi = ll_s2sbi(sb);
1837 struct obd_statfs obd_osfs;
1841 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1843 CERROR("md_statfs fails: rc = %d\n", rc);
1847 osfs->os_type = sb->s_magic;
1849 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1850 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1852 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1853 flags |= OBD_STATFS_NODELAY;
1855 rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1857 CERROR("obd_statfs fails: rc = %d\n", rc);
1861 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1862 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1865 osfs->os_bsize = obd_osfs.os_bsize;
1866 osfs->os_blocks = obd_osfs.os_blocks;
1867 osfs->os_bfree = obd_osfs.os_bfree;
1868 osfs->os_bavail = obd_osfs.os_bavail;
1870 /* If we don't have as many objects free on the OST as inodes
1871 * on the MDS, we reduce the total number of inodes to
1872 * compensate, so that the "inodes in use" number is correct.
1874 if (obd_osfs.os_ffree < osfs->os_ffree) {
1875 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1877 osfs->os_ffree = obd_osfs.os_ffree;
1882 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1884 struct super_block *sb = de->d_sb;
1885 struct obd_statfs osfs;
1886 __u64 fsid = huge_encode_dev(sb->s_dev);
1889 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1890 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1892 /* Some amount of caching on the client is allowed */
1893 rc = ll_statfs_internal(sb, &osfs,
1894 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1899 statfs_unpack(sfs, &osfs);
1901 /* We need to downshift for all 32-bit kernels, because we can't
1902 * tell if the kernel is being called via sys_statfs64() or not.
1903 * Stop before overflowing f_bsize - in which case it is better
1904 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1905 if (sizeof(long) < 8) {
1906 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1909 osfs.os_blocks >>= 1;
1910 osfs.os_bfree >>= 1;
1911 osfs.os_bavail >>= 1;
1915 sfs->f_blocks = osfs.os_blocks;
1916 sfs->f_bfree = osfs.os_bfree;
1917 sfs->f_bavail = osfs.os_bavail;
1918 sfs->f_fsid.val[0] = (__u32)fsid;
1919 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
1923 void ll_inode_size_lock(struct inode *inode)
1925 struct ll_inode_info *lli;
1927 LASSERT(!S_ISDIR(inode->i_mode));
1929 lli = ll_i2info(inode);
1930 mutex_lock(&lli->lli_size_mutex);
1933 void ll_inode_size_unlock(struct inode *inode)
1935 struct ll_inode_info *lli;
1937 lli = ll_i2info(inode);
1938 mutex_unlock(&lli->lli_size_mutex);
1941 int ll_update_inode(struct inode *inode, struct lustre_md *md)
1943 struct ll_inode_info *lli = ll_i2info(inode);
1944 struct mdt_body *body = md->body;
1945 struct lov_stripe_md *lsm = md->lsm;
1946 struct ll_sb_info *sbi = ll_i2sbi(inode);
1948 LASSERT((lsm != NULL) == ((body->mbo_valid & OBD_MD_FLEASIZE) != 0));
1950 if (!lli->lli_has_smd &&
1951 !(sbi->ll_flags & LL_SBI_LAYOUT_LOCK))
1952 cl_file_inode_init(inode, md);
1954 lli->lli_maxbytes = lsm->lsm_maxbytes;
1955 if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
1956 lli->lli_maxbytes = MAX_LFS_FILESIZE;
1959 if (S_ISDIR(inode->i_mode)) {
1962 rc = ll_update_lsm_md(inode, md);
1967 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1968 if (body->mbo_valid & OBD_MD_FLRMTPERM)
1969 ll_update_remote_perm(inode, md->remote_perm);
1971 #ifdef CONFIG_FS_POSIX_ACL
1972 else if (body->mbo_valid & OBD_MD_FLACL) {
1973 spin_lock(&lli->lli_lock);
1974 if (lli->lli_posix_acl)
1975 posix_acl_release(lli->lli_posix_acl);
1976 lli->lli_posix_acl = md->posix_acl;
1977 spin_unlock(&lli->lli_lock);
1980 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
1981 sbi->ll_flags & LL_SBI_32BIT_API);
1982 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
1984 if (body->mbo_valid & OBD_MD_FLATIME) {
1985 if (body->mbo_atime > LTIME_S(inode->i_atime))
1986 LTIME_S(inode->i_atime) = body->mbo_atime;
1987 lli->lli_atime = body->mbo_atime;
1990 if (body->mbo_valid & OBD_MD_FLMTIME) {
1991 if (body->mbo_mtime > LTIME_S(inode->i_mtime)) {
1992 CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1993 "to "LPU64"\n", inode->i_ino,
1994 LTIME_S(inode->i_mtime), body->mbo_mtime);
1995 LTIME_S(inode->i_mtime) = body->mbo_mtime;
1997 lli->lli_mtime = body->mbo_mtime;
2000 if (body->mbo_valid & OBD_MD_FLCTIME) {
2001 if (body->mbo_ctime > LTIME_S(inode->i_ctime))
2002 LTIME_S(inode->i_ctime) = body->mbo_ctime;
2003 lli->lli_ctime = body->mbo_ctime;
2006 if (body->mbo_valid & OBD_MD_FLMODE)
2007 inode->i_mode = (inode->i_mode & S_IFMT) |
2008 (body->mbo_mode & ~S_IFMT);
2010 if (body->mbo_valid & OBD_MD_FLTYPE)
2011 inode->i_mode = (inode->i_mode & ~S_IFMT) |
2012 (body->mbo_mode & S_IFMT);
2014 LASSERT(inode->i_mode != 0);
2015 if (S_ISREG(inode->i_mode))
2016 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
2017 LL_MAX_BLKSIZE_BITS);
2019 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
2021 if (body->mbo_valid & OBD_MD_FLUID)
2022 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
2023 if (body->mbo_valid & OBD_MD_FLGID)
2024 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
2025 if (body->mbo_valid & OBD_MD_FLFLAGS)
2026 inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
2027 if (body->mbo_valid & OBD_MD_FLNLINK)
2028 set_nlink(inode, body->mbo_nlink);
2029 if (body->mbo_valid & OBD_MD_FLRDEV)
2030 inode->i_rdev = old_decode_dev(body->mbo_rdev);
2032 if (body->mbo_valid & OBD_MD_FLID) {
2033 /* FID shouldn't be changed! */
2034 if (fid_is_sane(&lli->lli_fid)) {
2035 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
2036 "Trying to change FID "DFID
2037 " to the "DFID", inode "DFID"(%p)\n",
2038 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
2039 PFID(ll_inode2fid(inode)), inode);
2041 lli->lli_fid = body->mbo_fid1;
2045 LASSERT(fid_seq(&lli->lli_fid) != 0);
2047 if (body->mbo_valid & OBD_MD_FLSIZE) {
2048 if (exp_connect_som(ll_i2mdexp(inode)) &&
2049 S_ISREG(inode->i_mode)) {
2050 struct lustre_handle lockh;
2053 /* As it is possible a blocking ast has been processed
2054 * by this time, we need to check there is an UPDATE
2055 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
2057 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
2058 &lockh, LDLM_FL_CBPENDING,
2062 if (lli->lli_flags & (LLIF_DONE_WRITING |
2063 LLIF_EPOCH_PENDING |
2065 CERROR("%s: inode "DFID" flags %u still"
2066 " has size authority! do not "
2067 "trust the size from MDS\n",
2068 sbi->ll_md_exp->exp_obd->obd_name,
2069 PFID(ll_inode2fid(inode)),
2072 /* Use old size assignment to avoid
2073 * deadlock bz14138 & bz14326 */
2074 i_size_write(inode, body->mbo_size);
2075 spin_lock(&lli->lli_lock);
2076 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
2077 spin_unlock(&lli->lli_lock);
2079 ldlm_lock_decref(&lockh, mode);
2082 /* Use old size assignment to avoid
2083 * deadlock bz14138 & bz14326 */
2084 i_size_write(inode, body->mbo_size);
2087 "inode="DFID", updating i_size %llu\n",
2088 PFID(ll_inode2fid(inode)),
2089 (unsigned long long)body->mbo_size);
2092 if (body->mbo_valid & OBD_MD_FLBLOCKS)
2093 inode->i_blocks = body->mbo_blocks;
2096 if (body->mbo_valid & OBD_MD_FLMDSCAPA) {
2097 LASSERT(md->mds_capa);
2098 ll_add_capa(inode, md->mds_capa);
2101 if (body->mbo_valid & OBD_MD_FLOSSCAPA) {
2102 LASSERT(md->oss_capa);
2103 ll_add_capa(inode, md->oss_capa);
2106 if (body->mbo_valid & OBD_MD_TSTATE) {
2107 if (body->mbo_t_state & MS_RESTORE)
2108 lli->lli_flags |= LLIF_FILE_RESTORING;
2114 int ll_read_inode2(struct inode *inode, void *opaque)
2116 struct lustre_md *md = opaque;
2117 struct ll_inode_info *lli = ll_i2info(inode);
2121 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2122 PFID(&lli->lli_fid), inode);
2124 LASSERT(!lli->lli_has_smd);
2126 /* Core attributes from the MDS first. This is a new inode, and
2127 * the VFS doesn't zero times in the core inode so we have to do
2128 * it ourselves. They will be overwritten by either MDS or OST
2129 * attributes - we just need to make sure they aren't newer. */
2130 LTIME_S(inode->i_mtime) = 0;
2131 LTIME_S(inode->i_atime) = 0;
2132 LTIME_S(inode->i_ctime) = 0;
2134 rc = ll_update_inode(inode, md);
2138 /* OIDEBUG(inode); */
2140 /* initializing backing dev info. */
2141 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2144 if (S_ISREG(inode->i_mode)) {
2145 struct ll_sb_info *sbi = ll_i2sbi(inode);
2146 inode->i_op = &ll_file_inode_operations;
2147 inode->i_fop = sbi->ll_fop;
2148 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2150 } else if (S_ISDIR(inode->i_mode)) {
2151 inode->i_op = &ll_dir_inode_operations;
2152 inode->i_fop = &ll_dir_operations;
2154 } else if (S_ISLNK(inode->i_mode)) {
2155 inode->i_op = &ll_fast_symlink_inode_operations;
2158 inode->i_op = &ll_special_inode_operations;
2160 init_special_inode(inode, inode->i_mode,
2169 void ll_delete_inode(struct inode *inode)
2171 struct ll_inode_info *lli = ll_i2info(inode);
2174 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
2175 /* It is last chance to write out dirty pages,
2176 * otherwise we may lose data while umount */
2177 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
2179 truncate_inode_pages_final(&inode->i_data);
2181 LASSERTF(inode->i_data.nrpages == 0, "inode="DFID"(%p) nrpages=%lu, "
2182 "see https://jira.hpdd.intel.com/browse/LU-118\n",
2183 PFID(ll_inode2fid(inode)), inode, inode->i_data.nrpages);
2185 #ifdef HAVE_SBOPS_EVICT_INODE
2186 ll_clear_inode(inode);
2193 int ll_iocontrol(struct inode *inode, struct file *file,
2194 unsigned int cmd, unsigned long arg)
2196 struct ll_sb_info *sbi = ll_i2sbi(inode);
2197 struct ptlrpc_request *req = NULL;
2202 case FSFILT_IOC_GETFLAGS: {
2203 struct mdt_body *body;
2204 struct md_op_data *op_data;
2206 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2207 0, 0, LUSTRE_OPC_ANY,
2209 if (IS_ERR(op_data))
2210 RETURN(PTR_ERR(op_data));
2212 op_data->op_valid = OBD_MD_FLFLAGS;
2213 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2214 ll_finish_md_op_data(op_data);
2216 CERROR("%s: failure inode "DFID": rc = %d\n",
2217 sbi->ll_md_exp->exp_obd->obd_name,
2218 PFID(ll_inode2fid(inode)), rc);
2222 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2224 flags = body->mbo_flags;
2226 ptlrpc_req_finished(req);
2228 RETURN(put_user(flags, (int __user *)arg));
2230 case FSFILT_IOC_SETFLAGS: {
2231 struct lov_stripe_md *lsm;
2232 struct obd_info oinfo = { { { 0 } } };
2233 struct md_op_data *op_data;
2235 if (get_user(flags, (int __user *)arg))
2238 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2239 LUSTRE_OPC_ANY, NULL);
2240 if (IS_ERR(op_data))
2241 RETURN(PTR_ERR(op_data));
2243 op_data->op_attr_flags = flags;
2244 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
2245 rc = md_setattr(sbi->ll_md_exp, op_data,
2246 NULL, 0, NULL, 0, &req, NULL);
2247 ll_finish_md_op_data(op_data);
2248 ptlrpc_req_finished(req);
2252 inode->i_flags = ll_ext_to_inode_flags(flags);
2254 lsm = ccc_inode_lsm_get(inode);
2255 if (!lsm_has_objects(lsm)) {
2256 ccc_inode_lsm_put(inode, lsm);
2260 OBDO_ALLOC(oinfo.oi_oa);
2262 ccc_inode_lsm_put(inode, lsm);
2266 oinfo.oi_oa->o_oi = lsm->lsm_oi;
2267 oinfo.oi_oa->o_flags = flags;
2268 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
2270 oinfo.oi_capa = ll_mdscapa_get(inode);
2271 obdo_set_parent_fid(oinfo.oi_oa, &ll_i2info(inode)->lli_fid);
2272 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
2273 capa_put(oinfo.oi_capa);
2274 OBDO_FREE(oinfo.oi_oa);
2275 ccc_inode_lsm_put(inode, lsm);
2277 if (rc && rc != -EPERM && rc != -EACCES)
2278 CERROR("osc_setattr_async fails: rc = %d\n", rc);
2289 int ll_flush_ctx(struct inode *inode)
2291 struct ll_sb_info *sbi = ll_i2sbi(inode);
2293 CDEBUG(D_SEC, "flush context for user %d\n",
2294 from_kuid(&init_user_ns, current_uid()));
2296 obd_set_info_async(NULL, sbi->ll_md_exp,
2297 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2299 obd_set_info_async(NULL, sbi->ll_dt_exp,
2300 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2305 /* umount -f client means force down, don't save state */
2306 void ll_umount_begin(struct super_block *sb)
2308 struct ll_sb_info *sbi = ll_s2sbi(sb);
2309 struct obd_device *obd;
2310 struct obd_ioctl_data *ioc_data;
2313 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2314 sb->s_count, atomic_read(&sb->s_active));
2316 obd = class_exp2obd(sbi->ll_md_exp);
2318 CERROR("Invalid MDC connection handle "LPX64"\n",
2319 sbi->ll_md_exp->exp_handle.h_cookie);
2325 obd = class_exp2obd(sbi->ll_dt_exp);
2327 CERROR("Invalid LOV connection handle "LPX64"\n",
2328 sbi->ll_dt_exp->exp_handle.h_cookie);
2334 OBD_ALLOC_PTR(ioc_data);
2336 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2337 sizeof *ioc_data, ioc_data, NULL);
2339 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2340 sizeof *ioc_data, ioc_data, NULL);
2342 OBD_FREE_PTR(ioc_data);
2345 /* Really, we'd like to wait until there are no requests outstanding,
2346 * and then continue. For now, we just invalidate the requests,
2347 * schedule() and sleep one second if needed, and hope.
2353 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2355 struct ll_sb_info *sbi = ll_s2sbi(sb);
2356 char *profilenm = get_profile_name(sb);
2360 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2361 read_only = *flags & MS_RDONLY;
2362 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2363 sizeof(KEY_READ_ONLY),
2364 KEY_READ_ONLY, sizeof(read_only),
2367 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2368 profilenm, read_only ?
2369 "read-only" : "read-write", err);
2374 sb->s_flags |= MS_RDONLY;
2376 sb->s_flags &= ~MS_RDONLY;
2378 if (sbi->ll_flags & LL_SBI_VERBOSE)
2379 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2380 read_only ? "read-only" : "read-write");
2386 * Cleanup the open handle that is cached on MDT-side.
2388 * For open case, the client side open handling thread may hit error
2389 * after the MDT grant the open. Under such case, the client should
2390 * send close RPC to the MDT as cleanup; otherwise, the open handle
2391 * on the MDT will be leaked there until the client umount or evicted.
2393 * In further, if someone unlinked the file, because the open handle
2394 * holds the reference on such file/object, then it will block the
2395 * subsequent threads that want to locate such object via FID.
2397 * \param[in] sb super block for this file-system
2398 * \param[in] open_req pointer to the original open request
2400 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
2402 struct mdt_body *body;
2403 struct md_op_data *op_data;
2404 struct ptlrpc_request *close_req = NULL;
2405 struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
2408 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
2409 OBD_ALLOC_PTR(op_data);
2410 if (op_data == NULL) {
2411 CWARN("%s: cannot allocate op_data to release open handle for "
2413 ll_get_fsname(sb, NULL, 0), PFID(&body->mbo_fid1));
2418 op_data->op_fid1 = body->mbo_fid1;
2419 op_data->op_ioepoch = body->mbo_ioepoch;
2420 op_data->op_handle = body->mbo_handle;
2421 op_data->op_mod_time = cfs_time_current_sec();
2422 md_close(exp, op_data, NULL, &close_req);
2423 ptlrpc_req_finished(close_req);
2424 ll_finish_md_op_data(op_data);
2429 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2430 struct super_block *sb, struct lookup_intent *it)
2432 struct ll_sb_info *sbi = NULL;
2433 struct lustre_md md = { NULL };
2437 LASSERT(*inode || sb);
2438 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2439 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2440 sbi->ll_md_exp, &md);
2445 rc = ll_update_inode(*inode, &md);
2449 LASSERT(sb != NULL);
2452 * At this point server returns to client's same fid as client
2453 * generated for creating. So using ->fid1 is okay here.
2455 LASSERT(fid_is_sane(&md.body->mbo_fid1));
2457 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2458 sbi->ll_flags & LL_SBI_32BIT_API),
2460 if (IS_ERR(*inode)) {
2461 #ifdef CONFIG_FS_POSIX_ACL
2463 posix_acl_release(md.posix_acl);
2464 md.posix_acl = NULL;
2467 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2469 CERROR("new_inode -fatal: rc %d\n", rc);
2474 /* Handling piggyback layout lock.
2475 * Layout lock can be piggybacked by getattr and open request.
2476 * The lsm can be applied to inode only if it comes with a layout lock
2477 * otherwise correct layout may be overwritten, for example:
2478 * 1. proc1: mdt returns a lsm but not granting layout
2479 * 2. layout was changed by another client
2480 * 3. proc2: refresh layout and layout lock granted
2481 * 4. proc1: to apply a stale layout */
2482 if (it != NULL && it->d.lustre.it_lock_mode != 0) {
2483 struct lustre_handle lockh;
2484 struct ldlm_lock *lock;
2486 lockh.cookie = it->d.lustre.it_lock_handle;
2487 lock = ldlm_handle2lock(&lockh);
2488 LASSERT(lock != NULL);
2489 if (ldlm_has_layout(lock)) {
2490 struct cl_object_conf conf;
2492 memset(&conf, 0, sizeof(conf));
2493 conf.coc_opc = OBJECT_CONF_SET;
2494 conf.coc_inode = *inode;
2495 conf.coc_lock = lock;
2496 conf.u.coc_md = &md;
2497 (void)ll_layout_conf(*inode, &conf);
2499 LDLM_LOCK_PUT(lock);
2506 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2507 md_free_lustre_md(sbi->ll_md_exp, &md);
2510 if (rc != 0 && it != NULL && it->it_op & IT_OPEN)
2511 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2516 int ll_obd_statfs(struct inode *inode, void __user *arg)
2518 struct ll_sb_info *sbi = NULL;
2519 struct obd_export *exp;
2521 struct obd_ioctl_data *data = NULL;
2523 __u32 __user flags; /* not user, but obd_iocontrol is abused */
2526 if (!inode || !(sbi = ll_i2sbi(inode)))
2527 GOTO(out_statfs, rc = -EINVAL);
2529 rc = obd_ioctl_getdata(&buf, &len, arg);
2531 GOTO(out_statfs, rc);
2534 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2535 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2536 GOTO(out_statfs, rc = -EINVAL);
2538 if (data->ioc_inllen1 != sizeof(__u32) ||
2539 data->ioc_inllen2 != sizeof(__u32) ||
2540 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2541 data->ioc_plen2 != sizeof(struct obd_uuid))
2542 GOTO(out_statfs, rc = -EINVAL);
2544 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2545 if (type & LL_STATFS_LMV)
2546 exp = sbi->ll_md_exp;
2547 else if (type & LL_STATFS_LOV)
2548 exp = sbi->ll_dt_exp;
2550 GOTO(out_statfs, rc = -ENODEV);
2552 flags = (type & LL_STATFS_NODELAY) ? OBD_STATFS_NODELAY : 0;
2553 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, &flags);
2555 GOTO(out_statfs, rc);
2558 obd_ioctl_freedata(buf, len);
2562 int ll_process_config(struct lustre_cfg *lcfg)
2564 struct super_block *sb;
2569 /* The instance name contains the sb: lustre-client-aacfe000 */
2570 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2571 if (!ptr || !*(++ptr))
2573 if (sscanf(ptr, "%lx", &x) != 1)
2575 sb = (struct super_block *)x;
2576 /* This better be a real Lustre superblock! */
2577 LASSERT(s2lsi(sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2579 /* Note we have not called client_common_fill_super yet, so
2580 proc fns must be able to handle that! */
2581 rc = class_process_proc_param(PARAM_LLITE, lprocfs_llite_obd_vars,
2588 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2589 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2590 struct inode *i1, struct inode *i2,
2591 const char *name, size_t namelen,
2592 __u32 mode, __u32 opc, void *data)
2594 LASSERT(i1 != NULL);
2597 /* Do not reuse namelen for something else. */
2599 return ERR_PTR(-EINVAL);
2601 if (namelen > ll_i2sbi(i1)->ll_namelen)
2602 return ERR_PTR(-ENAMETOOLONG);
2604 if (!lu_name_is_valid_2(name, namelen))
2605 return ERR_PTR(-EINVAL);
2608 if (op_data == NULL)
2609 OBD_ALLOC_PTR(op_data);
2611 if (op_data == NULL)
2612 return ERR_PTR(-ENOMEM);
2614 ll_i2gids(op_data->op_suppgids, i1, i2);
2615 op_data->op_fid1 = *ll_inode2fid(i1);
2616 op_data->op_capa1 = ll_mdscapa_get(i1);
2617 op_data->op_default_stripe_offset = -1;
2618 if (S_ISDIR(i1->i_mode)) {
2619 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2620 op_data->op_default_stripe_offset =
2621 ll_i2info(i1)->lli_def_stripe_offset;
2625 op_data->op_fid2 = *ll_inode2fid(i2);
2626 op_data->op_capa2 = ll_mdscapa_get(i2);
2627 if (S_ISDIR(i2->i_mode))
2628 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2630 fid_zero(&op_data->op_fid2);
2631 op_data->op_capa2 = NULL;
2634 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2635 op_data->op_cli_flags |= CLI_HASH64;
2637 if (ll_need_32bit_api(ll_i2sbi(i1)))
2638 op_data->op_cli_flags |= CLI_API32;
2640 op_data->op_name = name;
2641 op_data->op_namelen = namelen;
2642 op_data->op_mode = mode;
2643 op_data->op_mod_time = cfs_time_current_sec();
2644 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2645 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2646 op_data->op_cap = cfs_curproc_cap_pack();
2647 op_data->op_bias = 0;
2648 op_data->op_cli_flags = 0;
2649 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2650 filename_is_volatile(name, namelen, &op_data->op_mds)) {
2651 op_data->op_bias |= MDS_CREATE_VOLATILE;
2653 op_data->op_mds = 0;
2655 op_data->op_data = data;
2657 /* When called by ll_setattr_raw, file is i1. */
2658 if (LLIF_DATA_MODIFIED & ll_i2info(i1)->lli_flags)
2659 op_data->op_bias |= MDS_DATA_MODIFIED;
2664 void ll_finish_md_op_data(struct md_op_data *op_data)
2666 capa_put(op_data->op_capa1);
2667 capa_put(op_data->op_capa2);
2668 OBD_FREE_PTR(op_data);
2671 #ifdef HAVE_SUPEROPS_USE_DENTRY
2672 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2674 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2677 struct ll_sb_info *sbi;
2679 #ifdef HAVE_SUPEROPS_USE_DENTRY
2680 LASSERT((seq != NULL) && (dentry != NULL));
2681 sbi = ll_s2sbi(dentry->d_sb);
2683 LASSERT((seq != NULL) && (vfs != NULL));
2684 sbi = ll_s2sbi(vfs->mnt_sb);
2687 if (sbi->ll_flags & LL_SBI_NOLCK)
2688 seq_puts(seq, ",nolock");
2690 if (sbi->ll_flags & LL_SBI_FLOCK)
2691 seq_puts(seq, ",flock");
2693 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2694 seq_puts(seq, ",localflock");
2696 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2697 seq_puts(seq, ",user_xattr");
2699 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2700 seq_puts(seq, ",lazystatfs");
2702 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2703 seq_puts(seq, ",user_fid2path");
2709 * Get obd name by cmd, and copy out to user space
2711 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2713 struct ll_sb_info *sbi = ll_i2sbi(inode);
2714 struct obd_device *obd;
2717 if (cmd == OBD_IOC_GETDTNAME)
2718 obd = class_exp2obd(sbi->ll_dt_exp);
2719 else if (cmd == OBD_IOC_GETMDNAME)
2720 obd = class_exp2obd(sbi->ll_md_exp);
2727 if (copy_to_user((void __user *)arg, obd->obd_name,
2728 strlen(obd->obd_name) + 1))
2735 * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
2736 * fsname will be returned in this buffer; otherwise, a static buffer will be
2737 * used to store the fsname and returned to caller.
2739 char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
2741 static char fsname_static[MTI_NAME_MAXLEN];
2742 struct lustre_sb_info *lsi = s2lsi(sb);
2747 /* this means the caller wants to use static buffer
2748 * and it doesn't care about race. Usually this is
2749 * in error reporting path */
2750 buf = fsname_static;
2751 buflen = sizeof(fsname_static);
2754 len = strlen(lsi->lsi_lmd->lmd_profile);
2755 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
2756 if (ptr && (strcmp(ptr, "-client") == 0))
2759 if (unlikely(len >= buflen))
2761 strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
2767 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2774 p.mnt = current->fs->root.mnt;
2776 path = d_path(&p, buf, bufsize);
2781 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2783 char *buf, *path = NULL;
2784 struct dentry *dentry = NULL;
2785 struct vvp_object *obj = cl_inode2vvp(page->mapping->host);
2787 /* this can be called inside spin lock so use GFP_ATOMIC. */
2788 buf = (char *)__get_free_page(GFP_ATOMIC);
2790 dentry = d_find_alias(page->mapping->host);
2792 path = ll_d_path(dentry, buf, PAGE_SIZE);
2796 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2797 "(rc %d)\n", ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
2798 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2799 PFID(&obj->vob_header.coh_lu.loh_fid),
2800 (path && !IS_ERR(path)) ? path : "", ioret);
2806 free_page((unsigned long)buf);
2809 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
2810 struct lov_user_md **kbuf)
2812 struct lov_user_md lum;
2816 if (copy_from_user(&lum, md, sizeof(lum)))
2819 lum_size = ll_lov_user_md_size(&lum);
2823 OBD_ALLOC(*kbuf, lum_size);
2827 if (copy_from_user(*kbuf, md, lum_size) != 0) {
2828 OBD_FREE(*kbuf, lum_size);
2836 * Compute llite root squash state after a change of root squash
2837 * configuration setting or add/remove of a lnet nid
2839 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2841 struct root_squash_info *squash = &sbi->ll_squash;
2844 lnet_process_id_t id;
2846 /* Update norootsquash flag */
2847 down_write(&squash->rsi_sem);
2848 if (list_empty(&squash->rsi_nosquash_nids))
2849 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2851 /* Do not apply root squash as soon as one of our NIDs is
2852 * in the nosquash_nids list */
2855 while (LNetGetId(i++, &id) != -ENOENT) {
2856 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2858 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2864 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2866 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2868 up_write(&squash->rsi_sem);
2872 * Parse linkea content to extract information about a given hardlink
2874 * \param[in] ldata - Initialized linkea data
2875 * \param[in] linkno - Link identifier
2876 * \param[out] parent_fid - The entry's parent FID
2877 * \param[out] ln - Entry name destination buffer
2879 * \retval 0 on success
2880 * \retval Appropriate negative error code on failure
2882 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
2883 struct lu_fid *parent_fid, struct lu_name *ln)
2889 rc = linkea_init(ldata);
2893 if (linkno >= ldata->ld_leh->leh_reccount)
2894 /* beyond last link */
2897 linkea_first_entry(ldata);
2898 for (idx = 0; ldata->ld_lee != NULL; idx++) {
2899 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
2904 linkea_next_entry(ldata);
2914 * Get parent FID and name of an identified link. Operation is performed for
2915 * a given link number, letting the caller iterate over linkno to list one or
2916 * all links of an entry.
2918 * \param[in] file - File descriptor against which to perform the operation
2919 * \param[in,out] arg - User-filled structure containing the linkno to operate
2920 * on and the available size. It is eventually filled with
2921 * the requested information or left untouched on error
2923 * \retval - 0 on success
2924 * \retval - Appropriate negative error code on failure
2926 int ll_getparent(struct file *file, struct getparent __user *arg)
2928 struct dentry *dentry = file->f_dentry;
2929 struct inode *inode = file->f_dentry->d_inode;
2930 struct linkea_data *ldata;
2931 struct lu_buf buf = LU_BUF_NULL;
2933 struct lu_fid parent_fid;
2940 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
2941 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
2944 if (get_user(name_size, &arg->gp_name_size))
2947 if (get_user(linkno, &arg->gp_linkno))
2950 if (name_size > PATH_MAX)
2953 OBD_ALLOC(ldata, sizeof(*ldata));
2957 rc = linkea_data_new(ldata, &buf);
2959 GOTO(ldata_free, rc);
2961 rc = ll_getxattr(dentry, XATTR_NAME_LINK, buf.lb_buf, buf.lb_len);
2965 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
2969 if (ln.ln_namelen >= name_size)
2970 GOTO(lb_free, rc = -EOVERFLOW);
2972 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
2973 GOTO(lb_free, rc = -EFAULT);
2975 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
2976 GOTO(lb_free, rc = -EFAULT);
2978 if (put_user('\0', arg->gp_name + ln.ln_namelen))
2979 GOTO(lb_free, rc = -EFAULT);
2984 OBD_FREE(ldata, sizeof(*ldata));