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, 2016, 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/module.h>
40 #include <linux/statfs.h>
41 #include <linux/time.h>
42 #include <linux/types.h>
43 #include <linux/version.h>
45 #include <linux/user_namespace.h>
46 #ifdef HAVE_UIDGID_HEADER
47 # include <linux/uidgid.h>
49 #include <linux/security.h>
51 #include <lustre_ioctl.h>
52 #include <lustre_ha.h>
53 #include <lustre_dlm.h>
54 #include <lprocfs_status.h>
55 #include <lustre_disk.h>
56 #include <lustre_param.h>
57 #include <lustre_log.h>
58 #include <cl_object.h>
59 #include <obd_cksum.h>
60 #include "llite_internal.h"
62 struct kmem_cache *ll_file_data_slab;
65 #define log2(n) ffz(~(n))
68 static struct ll_sb_info *ll_init_sbi(void)
70 struct ll_sb_info *sbi = NULL;
72 unsigned long lru_page_max;
82 spin_lock_init(&sbi->ll_lock);
83 mutex_init(&sbi->ll_lco.lco_lock);
84 spin_lock_init(&sbi->ll_pp_extent_lock);
85 spin_lock_init(&sbi->ll_process_lock);
86 sbi->ll_rw_stats_on = 0;
89 pages = si.totalram - si.totalhigh;
90 lru_page_max = pages / 2;
92 /* initialize ll_cache data */
93 sbi->ll_cache = cl_cache_init(lru_page_max);
94 if (sbi->ll_cache == NULL) {
95 OBD_FREE(sbi, sizeof(*sbi));
99 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
100 SBI_DEFAULT_READAHEAD_MAX);
101 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
102 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
103 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
105 ll_generate_random_uuid(uuid);
106 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
107 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
109 sbi->ll_flags |= LL_SBI_VERBOSE;
110 #ifdef ENABLE_CHECKSUM
111 sbi->ll_flags |= LL_SBI_CHECKSUM;
114 #ifdef HAVE_LRU_RESIZE_SUPPORT
115 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
117 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
119 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
120 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
122 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
126 /* metadata statahead is enabled by default */
127 sbi->ll_sa_max = LL_SA_RPC_DEF;
128 atomic_set(&sbi->ll_sa_total, 0);
129 atomic_set(&sbi->ll_sa_wrong, 0);
130 atomic_set(&sbi->ll_sa_running, 0);
131 atomic_set(&sbi->ll_agl_total, 0);
132 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
133 sbi->ll_flags |= LL_SBI_FAST_READ;
136 sbi->ll_squash.rsi_uid = 0;
137 sbi->ll_squash.rsi_gid = 0;
138 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
139 init_rwsem(&sbi->ll_squash.rsi_sem);
144 static void ll_free_sbi(struct super_block *sb)
146 struct ll_sb_info *sbi = ll_s2sbi(sb);
150 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
151 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
152 if (sbi->ll_cache != NULL) {
153 cl_cache_decref(sbi->ll_cache);
154 sbi->ll_cache = NULL;
156 OBD_FREE(sbi, sizeof(*sbi));
161 static inline int obd_connect_has_secctx(struct obd_connect_data *data)
163 return data->ocd_connect_flags & OBD_CONNECT_FLAGS2 &&
164 data->ocd_connect_flags2 & OBD_CONNECT2_FILE_SECCTX;
167 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
168 struct vfsmount *mnt)
170 struct inode *root = NULL;
171 struct ll_sb_info *sbi = ll_s2sbi(sb);
172 struct obd_device *obd;
173 struct obd_statfs *osfs = NULL;
174 struct ptlrpc_request *request = NULL;
175 struct obd_connect_data *data = NULL;
176 struct obd_uuid *uuid;
177 struct md_op_data *op_data;
178 struct lustre_md lmd;
180 int size, err, checksum;
183 obd = class_name2obd(md);
185 CERROR("MD %s: not setup or attached\n", md);
199 /* indicate the features supported by this client */
200 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
201 OBD_CONNECT_ATTRFID |
202 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
203 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
204 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
205 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
206 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
207 OBD_CONNECT_64BITHASH |
208 OBD_CONNECT_EINPROGRESS |
209 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
210 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
211 OBD_CONNECT_MAX_EASIZE |
212 OBD_CONNECT_FLOCK_DEAD |
213 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
214 OBD_CONNECT_OPEN_BY_FID |
215 OBD_CONNECT_DIR_STRIPE |
216 OBD_CONNECT_BULK_MBITS |
217 OBD_CONNECT_SUBTREE |
218 OBD_CONNECT_FLAGS2 | OBD_CONNECT_MULTIMODRPCS;
220 data->ocd_connect_flags2 = 0;
222 #ifdef HAVE_LRU_RESIZE_SUPPORT
223 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
224 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
226 #ifdef CONFIG_FS_POSIX_ACL
227 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
230 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
231 /* flag mdc connection as lightweight, only used for test
232 * purpose, use with care */
233 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
235 data->ocd_ibits_known = MDS_INODELOCK_FULL;
236 data->ocd_version = LUSTRE_VERSION_CODE;
238 if (sb->s_flags & MS_RDONLY)
239 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
240 if (sbi->ll_flags & LL_SBI_USER_XATTR)
241 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
243 if (sbi->ll_flags & LL_SBI_FLOCK)
244 sbi->ll_fop = &ll_file_operations_flock;
245 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
246 sbi->ll_fop = &ll_file_operations;
248 sbi->ll_fop = &ll_file_operations_noflock;
250 /* always ping even if server suppress_pings */
251 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
252 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
254 #ifdef HAVE_SECURITY_DENTRY_INIT_SECURITY
255 data->ocd_connect_flags2 |= OBD_CONNECT2_FILE_SECCTX;
256 #endif /* HAVE_SECURITY_DENTRY_INIT_SECURITY */
258 data->ocd_brw_size = MD_MAX_BRW_SIZE;
260 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
262 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
263 "recovery, of which this client is not a "
264 "part. Please wait for recovery to complete,"
265 " abort, or time out.\n", md);
268 CERROR("cannot connect to %s: rc = %d\n", md, err);
272 sbi->ll_md_exp->exp_connect_data = *data;
274 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
275 LUSTRE_SEQ_METADATA);
277 CERROR("%s: Can't init metadata layer FID infrastructure, "
278 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
282 /* For mount, we only need fs info from MDT0, and also in DNE, it
283 * can make sure the client can be mounted as long as MDT0 is
285 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
286 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
287 OBD_STATFS_FOR_MDT0);
289 GOTO(out_md_fid, err);
291 /* This needs to be after statfs to ensure connect has finished.
292 * Note that "data" does NOT contain the valid connect reply.
293 * If connecting to a 1.8 server there will be no LMV device, so
294 * we can access the MDC export directly and exp_connect_flags will
295 * be non-zero, but if accessing an upgraded 2.1 server it will
296 * have the correct flags filled in.
297 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
298 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
299 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
300 valid != CLIENT_CONNECT_MDT_REQD) {
303 OBD_ALLOC_WAIT(buf, PAGE_SIZE);
304 obd_connect_flags2str(buf, PAGE_SIZE,
305 valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
306 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
307 "feature(s) needed for correct operation "
308 "of this client (%s). Please upgrade "
309 "server or downgrade client.\n",
310 sbi->ll_md_exp->exp_obd->obd_name, buf);
311 OBD_FREE(buf, PAGE_SIZE);
312 GOTO(out_md_fid, err = -EPROTO);
315 size = sizeof(*data);
316 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
317 KEY_CONN_DATA, &size, data);
319 CERROR("%s: Get connect data failed: rc = %d\n",
320 sbi->ll_md_exp->exp_obd->obd_name, err);
321 GOTO(out_md_fid, err);
324 LASSERT(osfs->os_bsize);
325 sb->s_blocksize = osfs->os_bsize;
326 sb->s_blocksize_bits = log2(osfs->os_bsize);
327 sb->s_magic = LL_SUPER_MAGIC;
328 sb->s_maxbytes = MAX_LFS_FILESIZE;
329 sbi->ll_namelen = osfs->os_namelen;
330 sbi->ll_mnt.mnt = current->fs->root.mnt;
332 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
333 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
334 LCONSOLE_INFO("Disabling user_xattr feature because "
335 "it is not supported on the server\n");
336 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
339 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
341 sb->s_flags |= MS_POSIXACL;
343 sbi->ll_flags |= LL_SBI_ACL;
345 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
347 sb->s_flags &= ~MS_POSIXACL;
349 sbi->ll_flags &= ~LL_SBI_ACL;
352 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
353 sbi->ll_flags |= LL_SBI_64BIT_HASH;
355 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
356 sbi->ll_md_brw_pages = data->ocd_brw_size >> PAGE_SHIFT;
358 sbi->ll_md_brw_pages = 1;
360 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
361 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
363 if (obd_connect_has_secctx(data))
364 sbi->ll_flags |= LL_SBI_FILE_SECCTX;
366 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
367 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
368 LCONSOLE_INFO("%s: disabling xattr cache due to "
369 "unknown maximum xattr size.\n", dt);
371 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
372 sbi->ll_xattr_cache_enabled = 1;
376 obd = class_name2obd(dt);
378 CERROR("DT %s: not setup or attached\n", dt);
379 GOTO(out_md_fid, err = -ENODEV);
382 /* pass client page size via ocd_grant_blkbits, the server should report
383 * back its backend blocksize for grant calculation purpose */
384 data->ocd_grant_blkbits = PAGE_SHIFT;
386 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
387 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
388 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
389 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
390 OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
391 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
392 OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
393 OBD_CONNECT_EINPROGRESS |
394 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
395 OBD_CONNECT_LAYOUTLOCK |
396 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
397 OBD_CONNECT_BULK_MBITS;
399 data->ocd_connect_flags2 = 0;
401 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
402 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
404 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
405 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
406 * disabled by default, because it can still be enabled on the
407 * fly via /proc. As a consequence, we still need to come to an
408 * agreement on the supported algorithms at connect time */
409 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
411 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
412 data->ocd_cksum_types = OBD_CKSUM_ADLER;
414 data->ocd_cksum_types = cksum_types_supported_client();
417 #ifdef HAVE_LRU_RESIZE_SUPPORT
418 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
420 /* always ping even if server suppress_pings */
421 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
422 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
424 CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d "
425 "ocd_grant: %d\n", data->ocd_connect_flags,
426 data->ocd_version, data->ocd_grant);
428 obd->obd_upcall.onu_owner = &sbi->ll_lco;
429 obd->obd_upcall.onu_upcall = cl_ocd_update;
431 data->ocd_brw_size = DT_MAX_BRW_SIZE;
433 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data,
436 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
437 "recovery, of which this client is not a "
438 "part. Please wait for recovery to "
439 "complete, abort, or time out.\n", dt);
442 CERROR("%s: Cannot connect to %s: rc = %d\n",
443 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
447 sbi->ll_dt_exp->exp_connect_data = *data;
449 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
450 LUSTRE_SEQ_METADATA);
452 CERROR("%s: Can't init data layer FID infrastructure, "
453 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
457 mutex_lock(&sbi->ll_lco.lco_lock);
458 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
459 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
460 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
461 mutex_unlock(&sbi->ll_lco.lco_lock);
463 fid_zero(&sbi->ll_root_fid);
464 err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
467 CERROR("cannot mds_connect: rc = %d\n", err);
468 GOTO(out_lock_cn_cb, err);
470 if (!fid_is_sane(&sbi->ll_root_fid)) {
471 CERROR("%s: Invalid root fid "DFID" during mount\n",
472 sbi->ll_md_exp->exp_obd->obd_name,
473 PFID(&sbi->ll_root_fid));
474 GOTO(out_lock_cn_cb, err = -EINVAL);
476 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
478 sb->s_op = &lustre_super_operations;
479 #if THREAD_SIZE >= 8192 /*b=17630*/
480 sb->s_export_op = &lustre_export_operations;
484 * XXX: move this to after cbd setup? */
485 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
486 if (sbi->ll_flags & LL_SBI_ACL)
487 valid |= OBD_MD_FLACL;
489 OBD_ALLOC_PTR(op_data);
491 GOTO(out_lock_cn_cb, err = -ENOMEM);
493 op_data->op_fid1 = sbi->ll_root_fid;
494 op_data->op_mode = 0;
495 op_data->op_valid = valid;
497 err = md_getattr(sbi->ll_md_exp, op_data, &request);
499 OBD_FREE_PTR(op_data);
501 CERROR("%s: md_getattr failed for root: rc = %d\n",
502 sbi->ll_md_exp->exp_obd->obd_name, err);
503 GOTO(out_lock_cn_cb, err);
506 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
507 sbi->ll_md_exp, &lmd);
509 CERROR("failed to understand root inode md: rc = %d\n", err);
510 ptlrpc_req_finished(request);
511 GOTO(out_lock_cn_cb, err);
514 LASSERT(fid_is_sane(&sbi->ll_root_fid));
515 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
516 sbi->ll_flags & LL_SBI_32BIT_API),
518 md_free_lustre_md(sbi->ll_md_exp, &lmd);
519 ptlrpc_req_finished(request);
522 #ifdef CONFIG_FS_POSIX_ACL
524 posix_acl_release(lmd.posix_acl);
525 lmd.posix_acl = NULL;
528 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
530 CERROR("lustre_lite: bad iget4 for root\n");
534 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
535 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
536 KEY_CHECKSUM, sizeof(checksum), &checksum,
539 CERROR("%s: Set checksum failed: rc = %d\n",
540 sbi->ll_dt_exp->exp_obd->obd_name, err);
545 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
546 KEY_CACHE_SET, sizeof(*sbi->ll_cache),
547 sbi->ll_cache, NULL);
549 CERROR("%s: Set cache_set failed: rc = %d\n",
550 sbi->ll_dt_exp->exp_obd->obd_name, err);
554 sb->s_root = d_make_root(root);
555 if (sb->s_root == NULL) {
556 CERROR("%s: can't make root dentry\n",
557 ll_get_fsname(sb, NULL, 0));
558 GOTO(out_root, err = -ENOMEM);
560 #ifdef HAVE_DCACHE_LOCK
561 sb->s_root->d_op = &ll_d_ops;
564 sbi->ll_sdev_orig = sb->s_dev;
566 /* We set sb->s_dev equal on all lustre clients in order to support
567 * NFS export clustering. NFSD requires that the FSID be the same
569 /* s_dev is also used in lt_compare() to compare two fs, but that is
570 * only a node-local comparison. */
571 uuid = obd_get_uuid(sbi->ll_md_exp);
573 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
579 if (proc_lustre_fs_root != NULL) {
580 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
583 CERROR("%s: could not register mount in lprocfs: "
584 "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
594 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
596 obd_disconnect(sbi->ll_dt_exp);
597 sbi->ll_dt_exp = NULL;
599 obd_fid_fini(sbi->ll_md_exp->exp_obd);
601 obd_disconnect(sbi->ll_md_exp);
602 sbi->ll_md_exp = NULL;
611 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
615 size = sizeof(*lmmsize);
616 rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
617 KEY_MAX_EASIZE, &size, lmmsize);
619 CERROR("%s: cannot get max LOV EA size: rc = %d\n",
620 sbi->ll_dt_exp->exp_obd->obd_name, rc);
625 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
626 KEY_MAX_EASIZE, &size, lmmsize);
628 CERROR("Get max mdsize error rc %d\n", rc);
634 * Get the value of the default_easize parameter.
636 * \see client_obd::cl_default_mds_easize
638 * \param[in] sbi superblock info for this filesystem
639 * \param[out] lmmsize pointer to storage location for value
641 * \retval 0 on success
642 * \retval negative negated errno on failure
644 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
649 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
650 KEY_DEFAULT_EASIZE, &size, lmmsize);
652 CERROR("Get default mdsize error rc %d\n", rc);
658 * Set the default_easize parameter to the given value.
660 * \see client_obd::cl_default_mds_easize
662 * \param[in] sbi superblock info for this filesystem
663 * \param[in] lmmsize the size to set
665 * \retval 0 on success
666 * \retval negative negated errno on failure
668 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
672 if (lmmsize < sizeof(struct lov_mds_md) ||
673 lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
676 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
677 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
678 sizeof(int), &lmmsize, NULL);
683 static void ll_dump_inode(struct inode *inode)
685 struct ll_d_hlist_node *tmp;
686 int dentry_count = 0;
688 LASSERT(inode != NULL);
690 ll_d_hlist_for_each(tmp, &inode->i_dentry)
693 CERROR("%s: inode %p dump: dev=%s fid="DFID
694 " mode=%o count=%u, %d dentries\n",
695 ll_get_fsname(inode->i_sb, NULL, 0), inode,
696 ll_i2mdexp(inode)->exp_obd->obd_name, PFID(ll_inode2fid(inode)),
697 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
700 void lustre_dump_dentry(struct dentry *dentry, int recur)
702 struct list_head *tmp;
705 LASSERT(dentry != NULL);
707 list_for_each(tmp, &dentry->d_subdirs)
710 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
711 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
712 dentry->d_name.len, dentry->d_name.name,
713 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
714 dentry->d_parent, dentry->d_inode, ll_d_count(dentry),
715 dentry->d_flags, dentry->d_fsdata, subdirs);
716 if (dentry->d_inode != NULL)
717 ll_dump_inode(dentry->d_inode);
722 list_for_each(tmp, &dentry->d_subdirs) {
723 struct dentry *d = list_entry(tmp, struct dentry, d_child);
724 lustre_dump_dentry(d, recur - 1);
728 static void client_common_put_super(struct super_block *sb)
730 struct ll_sb_info *sbi = ll_s2sbi(sb);
735 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
736 obd_disconnect(sbi->ll_dt_exp);
737 sbi->ll_dt_exp = NULL;
739 lprocfs_unregister_mountpoint(sbi);
741 obd_fid_fini(sbi->ll_md_exp->exp_obd);
742 obd_disconnect(sbi->ll_md_exp);
743 sbi->ll_md_exp = NULL;
748 void ll_kill_super(struct super_block *sb)
750 struct ll_sb_info *sbi;
754 if (!(sb->s_flags & MS_ACTIVE))
758 /* we need restore s_dev from changed for clustred NFS before put_super
759 * because new kernels have cached s_dev and change sb->s_dev in
760 * put_super not affected real removing devices */
762 sb->s_dev = sbi->ll_sdev_orig;
763 sbi->ll_umounting = 1;
765 /* wait running statahead threads to quit */
766 while (atomic_read(&sbi->ll_sa_running) > 0) {
767 set_current_state(TASK_UNINTERRUPTIBLE);
768 schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC >> 3));
775 static inline int ll_set_opt(const char *opt, char *data, int fl)
777 if (strncmp(opt, data, strlen(opt)) != 0)
783 /* non-client-specific mount options are parsed in lmd_parse */
784 static int ll_options(char *options, int *flags)
787 char *s1 = options, *s2;
793 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
796 CDEBUG(D_SUPER, "next opt=%s\n", s1);
797 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
802 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
807 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
812 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
817 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
822 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
827 tmp = ll_set_opt("context", s1, 1);
830 tmp = ll_set_opt("fscontext", s1, 1);
833 tmp = ll_set_opt("defcontext", s1, 1);
836 tmp = ll_set_opt("rootcontext", s1, 1);
839 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
844 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
850 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
855 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
860 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
865 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
870 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
875 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
880 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
885 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
890 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
895 tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
900 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
906 s2 = strchr(s1, ',');
914 void ll_lli_init(struct ll_inode_info *lli)
916 lli->lli_inode_magic = LLI_INODE_MAGIC;
918 spin_lock_init(&lli->lli_lock);
919 lli->lli_posix_acl = NULL;
920 /* Do not set lli_fid, it has been initialized already. */
921 fid_zero(&lli->lli_pfid);
922 lli->lli_mds_read_och = NULL;
923 lli->lli_mds_write_och = NULL;
924 lli->lli_mds_exec_och = NULL;
925 lli->lli_open_fd_read_count = 0;
926 lli->lli_open_fd_write_count = 0;
927 lli->lli_open_fd_exec_count = 0;
928 mutex_init(&lli->lli_och_mutex);
929 spin_lock_init(&lli->lli_agl_lock);
930 spin_lock_init(&lli->lli_layout_lock);
931 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
932 lli->lli_clob = NULL;
934 init_rwsem(&lli->lli_xattrs_list_rwsem);
935 mutex_init(&lli->lli_xattrs_enq_lock);
937 LASSERT(lli->lli_vfs_inode.i_mode != 0);
938 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
939 mutex_init(&lli->lli_readdir_mutex);
940 lli->lli_opendir_key = NULL;
942 spin_lock_init(&lli->lli_sa_lock);
943 lli->lli_opendir_pid = 0;
944 lli->lli_sa_enabled = 0;
945 lli->lli_def_stripe_offset = -1;
947 mutex_init(&lli->lli_size_mutex);
948 lli->lli_symlink_name = NULL;
949 init_rwsem(&lli->lli_trunc_sem);
950 range_lock_tree_init(&lli->lli_write_tree);
951 init_rwsem(&lli->lli_glimpse_sem);
952 lli->lli_glimpse_time = 0;
953 INIT_LIST_HEAD(&lli->lli_agl_list);
954 lli->lli_agl_index = 0;
955 lli->lli_async_rc = 0;
957 mutex_init(&lli->lli_layout_mutex);
958 memset(lli->lli_jobid, 0, LUSTRE_JOBID_SIZE);
961 static inline int ll_bdi_register(struct backing_dev_info *bdi)
963 static atomic_t ll_bdi_num = ATOMIC_INIT(0);
965 bdi->name = "lustre";
966 return bdi_register(bdi, NULL, "lustre-%d",
967 atomic_inc_return(&ll_bdi_num));
970 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
972 struct lustre_profile *lprof = NULL;
973 struct lustre_sb_info *lsi = s2lsi(sb);
974 struct ll_sb_info *sbi;
975 char *dt = NULL, *md = NULL;
976 char *profilenm = get_profile_name(sb);
977 struct config_llog_instance *cfg;
978 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
979 const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
983 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
989 try_module_get(THIS_MODULE);
991 /* client additional sb info */
992 lsi->lsi_llsbi = sbi = ll_init_sbi();
994 module_put(THIS_MODULE);
999 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
1001 GOTO(out_free, err);
1003 err = bdi_init(&lsi->lsi_bdi);
1005 GOTO(out_free, err);
1006 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1007 #ifdef HAVE_BDI_CAP_MAP_COPY
1008 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1010 lsi->lsi_bdi.capabilities = 0;
1012 err = ll_bdi_register(&lsi->lsi_bdi);
1014 GOTO(out_free, err);
1016 sb->s_bdi = &lsi->lsi_bdi;
1017 #ifndef HAVE_DCACHE_LOCK
1018 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1019 sb->s_d_op = &ll_d_ops;
1022 /* Generate a string unique to this super, in case some joker tries
1023 to mount the same fs at two mount points.
1024 Use the address of the super itself.*/
1025 cfg->cfg_instance = sb;
1026 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1027 cfg->cfg_callback = class_config_llog_handler;
1028 cfg->cfg_sub_clds = CONFIG_SUB_CLIENT;
1029 /* set up client obds */
1030 err = lustre_process_log(sb, profilenm, cfg);
1032 GOTO(out_free, err);
1034 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1035 lprof = class_get_profile(profilenm);
1036 if (lprof == NULL) {
1037 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1038 " read from the MGS. Does that filesystem "
1039 "exist?\n", profilenm);
1040 GOTO(out_free, err = -EINVAL);
1042 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1043 lprof->lp_md, lprof->lp_dt);
1045 OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
1047 GOTO(out_free, err = -ENOMEM);
1048 sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
1050 OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
1052 GOTO(out_free, err = -ENOMEM);
1053 sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1055 /* connections, registrations, sb setup */
1056 err = client_common_fill_super(sb, md, dt, mnt);
1058 GOTO(out_free, err);
1060 sbi->ll_client_common_fill_super_succeeded = 1;
1064 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1066 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1068 class_put_profile(lprof);
1071 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1072 LCONSOLE_WARN("Mounted %s\n", profilenm);
1076 } /* ll_fill_super */
1078 void ll_put_super(struct super_block *sb)
1080 struct config_llog_instance cfg, params_cfg;
1081 struct obd_device *obd;
1082 struct lustre_sb_info *lsi = s2lsi(sb);
1083 struct ll_sb_info *sbi = ll_s2sbi(sb);
1084 char *profilenm = get_profile_name(sb);
1086 int next, force = 1, rc = 0;
1089 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1091 cfg.cfg_instance = sb;
1092 lustre_end_log(sb, profilenm, &cfg);
1094 params_cfg.cfg_instance = sb;
1095 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1097 if (sbi->ll_md_exp) {
1098 obd = class_exp2obd(sbi->ll_md_exp);
1100 force = obd->obd_force;
1103 /* Wait for unstable pages to be committed to stable storage */
1105 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
1106 rc = l_wait_event(sbi->ll_cache->ccc_unstable_waitq,
1107 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0,
1111 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1112 if (force == 0 && rc != -EINTR)
1113 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1116 /* We need to set force before the lov_disconnect in
1117 lustre_common_put_super, since l_d cleans up osc's as well. */
1120 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1122 obd->obd_force = force;
1126 if (sbi->ll_client_common_fill_super_succeeded) {
1127 /* Only if client_common_fill_super succeeded */
1128 client_common_put_super(sb);
1132 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1133 class_manual_cleanup(obd);
1136 if (sbi->ll_flags & LL_SBI_VERBOSE)
1137 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1140 class_del_profile(profilenm);
1142 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1143 bdi_destroy(&lsi->lsi_bdi);
1144 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1148 lsi->lsi_llsbi = NULL;
1150 lustre_common_put_super(sb);
1152 cl_env_cache_purge(~0);
1154 module_put(THIS_MODULE);
1157 } /* client_put_super */
1159 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1161 struct inode *inode = NULL;
1163 /* NOTE: we depend on atomic igrab() -bzzz */
1164 lock_res_and_lock(lock);
1165 if (lock->l_resource->lr_lvb_inode) {
1166 struct ll_inode_info * lli;
1167 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1168 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1169 inode = igrab(lock->l_resource->lr_lvb_inode);
1171 inode = lock->l_resource->lr_lvb_inode;
1172 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1173 D_WARNING, lock, "lr_lvb_inode %p is "
1174 "bogus: magic %08x",
1175 lock->l_resource->lr_lvb_inode,
1176 lli->lli_inode_magic);
1180 unlock_res_and_lock(lock);
1184 void ll_dir_clear_lsm_md(struct inode *inode)
1186 struct ll_inode_info *lli = ll_i2info(inode);
1188 LASSERT(S_ISDIR(inode->i_mode));
1190 if (lli->lli_lsm_md != NULL) {
1191 lmv_free_memmd(lli->lli_lsm_md);
1192 lli->lli_lsm_md = NULL;
1196 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1197 const struct lu_fid *fid,
1198 struct lustre_md *md)
1200 struct ll_sb_info *sbi = ll_s2sbi(sb);
1201 struct mdt_body *body = md->body;
1202 struct inode *inode;
1206 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1207 inode = iget_locked(sb, ino);
1208 if (inode == NULL) {
1209 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1210 ll_get_fsname(sb, NULL, 0), PFID(fid));
1211 RETURN(ERR_PTR(-ENOENT));
1214 if (inode->i_state & I_NEW) {
1215 struct ll_inode_info *lli = ll_i2info(inode);
1216 struct lmv_stripe_md *lsm = md->lmv;
1218 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1219 (body->mbo_mode & S_IFMT);
1220 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1223 LTIME_S(inode->i_mtime) = 0;
1224 LTIME_S(inode->i_atime) = 0;
1225 LTIME_S(inode->i_ctime) = 0;
1228 #ifdef HAVE_BACKING_DEV_INFO
1229 /* initializing backing dev info. */
1230 inode->i_mapping->backing_dev_info =
1231 &s2lsi(inode->i_sb)->lsi_bdi;
1233 inode->i_op = &ll_dir_inode_operations;
1234 inode->i_fop = &ll_dir_operations;
1235 lli->lli_fid = *fid;
1238 LASSERT(lsm != NULL);
1239 /* master object FID */
1240 lli->lli_pfid = body->mbo_fid1;
1241 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1242 lli, PFID(fid), PFID(&lli->lli_pfid));
1243 unlock_new_inode(inode);
1249 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1252 struct lmv_stripe_md *lsm = md->lmv;
1255 LASSERT(lsm != NULL);
1256 /* XXX sigh, this lsm_root initialization should be in
1257 * LMV layer, but it needs ll_iget right now, so we
1258 * put this here right now. */
1259 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1260 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1261 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1262 /* Unfortunately ll_iget will call ll_update_inode,
1263 * where the initialization of slave inode is slightly
1264 * different, so it reset lsm_md to NULL to avoid
1265 * initializing lsm for slave inode. */
1266 /* For migrating inode, master stripe and master object will
1267 * be same, so we only need assign this inode */
1268 if (lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION && i == 0)
1269 lsm->lsm_md_oinfo[i].lmo_root = inode;
1271 lsm->lsm_md_oinfo[i].lmo_root =
1272 ll_iget_anon_dir(inode->i_sb, fid, md);
1274 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1275 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1277 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1285 static inline int lli_lsm_md_eq(const struct lmv_stripe_md *lsm_md1,
1286 const struct lmv_stripe_md *lsm_md2)
1288 return lsm_md1->lsm_md_magic == lsm_md2->lsm_md_magic &&
1289 lsm_md1->lsm_md_stripe_count == lsm_md2->lsm_md_stripe_count &&
1290 lsm_md1->lsm_md_master_mdt_index ==
1291 lsm_md2->lsm_md_master_mdt_index &&
1292 lsm_md1->lsm_md_hash_type == lsm_md2->lsm_md_hash_type &&
1293 lsm_md1->lsm_md_layout_version ==
1294 lsm_md2->lsm_md_layout_version &&
1295 strcmp(lsm_md1->lsm_md_pool_name,
1296 lsm_md2->lsm_md_pool_name) == 0;
1299 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1301 struct ll_inode_info *lli = ll_i2info(inode);
1302 struct lmv_stripe_md *lsm = md->lmv;
1306 LASSERT(S_ISDIR(inode->i_mode));
1307 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1308 PFID(ll_inode2fid(inode)));
1310 /* no striped information from request. */
1312 if (lli->lli_lsm_md == NULL) {
1314 } else if (lli->lli_lsm_md->lsm_md_hash_type &
1315 LMV_HASH_FLAG_MIGRATION) {
1316 /* migration is done, the temporay MIGRATE layout has
1318 CDEBUG(D_INODE, DFID" finish migration.\n",
1319 PFID(ll_inode2fid(inode)));
1320 lmv_free_memmd(lli->lli_lsm_md);
1321 lli->lli_lsm_md = NULL;
1324 /* The lustre_md from req does not include stripeEA,
1325 * see ll_md_setattr */
1330 /* set the directory layout */
1331 if (lli->lli_lsm_md == NULL) {
1332 struct cl_attr *attr;
1334 rc = ll_init_lsm_md(inode, md);
1338 /* set md->lmv to NULL, so the following free lustre_md
1339 * will not free this lsm */
1341 lli->lli_lsm_md = lsm;
1343 OBD_ALLOC_PTR(attr);
1347 /* validate the lsm */
1348 rc = md_merge_attr(ll_i2mdexp(inode), lsm, attr,
1349 ll_md_blocking_ast);
1355 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1356 md->body->mbo_nlink = attr->cat_nlink;
1357 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1358 md->body->mbo_size = attr->cat_size;
1359 if (md->body->mbo_valid & OBD_MD_FLATIME)
1360 md->body->mbo_atime = attr->cat_atime;
1361 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1362 md->body->mbo_ctime = attr->cat_ctime;
1363 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1364 md->body->mbo_mtime = attr->cat_mtime;
1368 CDEBUG(D_INODE, "Set lsm %p magic %x to "DFID"\n", lsm,
1369 lsm->lsm_md_magic, PFID(ll_inode2fid(inode)));
1373 /* Compare the old and new stripe information */
1374 if (!lsm_md_eq(lli->lli_lsm_md, lsm)) {
1375 struct lmv_stripe_md *old_lsm = lli->lli_lsm_md;
1378 CERROR("%s: inode "DFID"(%p)'s lmv layout mismatch (%p)/(%p)"
1379 "magic:0x%x/0x%x stripe count: %d/%d master_mdt: %d/%d"
1380 "hash_type:0x%x/0x%x layout: 0x%x/0x%x pool:%s/%s\n",
1381 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1382 inode, lsm, old_lsm,
1383 lsm->lsm_md_magic, old_lsm->lsm_md_magic,
1384 lsm->lsm_md_stripe_count,
1385 old_lsm->lsm_md_stripe_count,
1386 lsm->lsm_md_master_mdt_index,
1387 old_lsm->lsm_md_master_mdt_index,
1388 lsm->lsm_md_hash_type, old_lsm->lsm_md_hash_type,
1389 lsm->lsm_md_layout_version,
1390 old_lsm->lsm_md_layout_version,
1391 lsm->lsm_md_pool_name,
1392 old_lsm->lsm_md_pool_name);
1394 for (idx = 0; idx < old_lsm->lsm_md_stripe_count; idx++) {
1395 CERROR("%s: sub FIDs in old lsm idx %d, old: "DFID"\n",
1396 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1397 PFID(&old_lsm->lsm_md_oinfo[idx].lmo_fid));
1400 for (idx = 0; idx < lsm->lsm_md_stripe_count; idx++) {
1401 CERROR("%s: sub FIDs in new lsm idx %d, new: "DFID"\n",
1402 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1403 PFID(&lsm->lsm_md_oinfo[idx].lmo_fid));
1412 void ll_clear_inode(struct inode *inode)
1414 struct ll_inode_info *lli = ll_i2info(inode);
1415 struct ll_sb_info *sbi = ll_i2sbi(inode);
1418 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1419 PFID(ll_inode2fid(inode)), inode);
1421 if (S_ISDIR(inode->i_mode)) {
1422 /* these should have been cleared in ll_file_release */
1423 LASSERT(lli->lli_opendir_key == NULL);
1424 LASSERT(lli->lli_sai == NULL);
1425 LASSERT(lli->lli_opendir_pid == 0);
1428 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1430 LASSERT(!lli->lli_open_fd_write_count);
1431 LASSERT(!lli->lli_open_fd_read_count);
1432 LASSERT(!lli->lli_open_fd_exec_count);
1434 if (lli->lli_mds_write_och)
1435 ll_md_real_close(inode, FMODE_WRITE);
1436 if (lli->lli_mds_exec_och)
1437 ll_md_real_close(inode, FMODE_EXEC);
1438 if (lli->lli_mds_read_och)
1439 ll_md_real_close(inode, FMODE_READ);
1441 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1442 OBD_FREE(lli->lli_symlink_name,
1443 strlen(lli->lli_symlink_name) + 1);
1444 lli->lli_symlink_name = NULL;
1447 ll_xattr_cache_destroy(inode);
1449 #ifdef CONFIG_FS_POSIX_ACL
1450 if (lli->lli_posix_acl) {
1451 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1452 posix_acl_release(lli->lli_posix_acl);
1453 lli->lli_posix_acl = NULL;
1456 lli->lli_inode_magic = LLI_INODE_DEAD;
1458 if (S_ISDIR(inode->i_mode))
1459 ll_dir_clear_lsm_md(inode);
1460 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1461 LASSERT(list_empty(&lli->lli_agl_list));
1464 * XXX This has to be done before lsm is freed below, because
1465 * cl_object still uses inode lsm.
1467 cl_inode_fini(inode);
1472 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1474 struct lustre_md md;
1475 struct inode *inode = dentry->d_inode;
1476 struct ll_sb_info *sbi = ll_i2sbi(inode);
1477 struct ptlrpc_request *request = NULL;
1481 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1482 LUSTRE_OPC_ANY, NULL);
1483 if (IS_ERR(op_data))
1484 RETURN(PTR_ERR(op_data));
1486 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1488 ptlrpc_req_finished(request);
1489 if (rc == -ENOENT) {
1491 /* Unlinked special device node? Or just a race?
1492 * Pretend we done everything. */
1493 if (!S_ISREG(inode->i_mode) &&
1494 !S_ISDIR(inode->i_mode)) {
1495 ia_valid = op_data->op_attr.ia_valid;
1496 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1497 rc = simple_setattr(dentry, &op_data->op_attr);
1498 op_data->op_attr.ia_valid = ia_valid;
1500 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1501 CERROR("md_setattr fails: rc = %d\n", rc);
1506 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1507 sbi->ll_md_exp, &md);
1509 ptlrpc_req_finished(request);
1513 ia_valid = op_data->op_attr.ia_valid;
1514 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1515 * cache is not cleared yet. */
1516 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1517 if (S_ISREG(inode->i_mode))
1519 rc = simple_setattr(dentry, &op_data->op_attr);
1520 if (S_ISREG(inode->i_mode))
1521 inode_unlock(inode);
1522 op_data->op_attr.ia_valid = ia_valid;
1524 rc = ll_update_inode(inode, &md);
1525 ptlrpc_req_finished(request);
1530 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1531 * object(s) determine the file size and mtime. Otherwise, the MDS will
1532 * keep these values until such a time that objects are allocated for it.
1533 * We do the MDS operations first, as it is checking permissions for us.
1534 * We don't to the MDS RPC if there is nothing that we want to store there,
1535 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1536 * going to do an RPC anyways.
1538 * If we are doing a truncate, we will send the mtime and ctime updates
1539 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1540 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1543 * In case of HSMimport, we only set attr on MDS.
1545 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
1547 struct inode *inode = dentry->d_inode;
1548 struct ll_inode_info *lli = ll_i2info(inode);
1549 struct md_op_data *op_data = NULL;
1553 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1554 "valid %x, hsm_import %d\n",
1555 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1556 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1559 if (attr->ia_valid & ATTR_SIZE) {
1560 /* Check new size against VFS/VM file size limit and rlimit */
1561 rc = inode_newsize_ok(inode, attr->ia_size);
1565 /* The maximum Lustre file size is variable, based on the
1566 * OST maximum object size and number of stripes. This
1567 * needs another check in addition to the VFS check above. */
1568 if (attr->ia_size > ll_file_maxbytes(inode)) {
1569 CDEBUG(D_INODE,"file "DFID" too large %llu > %llu\n",
1570 PFID(&lli->lli_fid), attr->ia_size,
1571 ll_file_maxbytes(inode));
1575 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1578 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1579 if (attr->ia_valid & TIMES_SET_FLAGS) {
1580 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1581 !cfs_capable(CFS_CAP_FOWNER))
1585 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1586 if (!(attr->ia_valid & ATTR_CTIME_SET) &&
1587 (attr->ia_valid & ATTR_CTIME)) {
1588 attr->ia_ctime = CURRENT_TIME;
1589 attr->ia_valid |= ATTR_CTIME_SET;
1591 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1592 (attr->ia_valid & ATTR_ATIME)) {
1593 attr->ia_atime = CURRENT_TIME;
1594 attr->ia_valid |= ATTR_ATIME_SET;
1596 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1597 (attr->ia_valid & ATTR_MTIME)) {
1598 attr->ia_mtime = CURRENT_TIME;
1599 attr->ia_valid |= ATTR_MTIME_SET;
1602 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1603 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %llu\n",
1604 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1605 (s64)ktime_get_real_seconds());
1607 if (S_ISREG(inode->i_mode)) {
1608 if (attr->ia_valid & ATTR_SIZE)
1609 inode_dio_write_done(inode);
1610 inode_unlock(inode);
1613 /* We always do an MDS RPC, even if we're only changing the size;
1614 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1616 OBD_ALLOC_PTR(op_data);
1617 if (op_data == NULL)
1618 GOTO(out, rc = -ENOMEM);
1620 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1621 /* If we are changing file size, file content is
1622 * modified, flag it. */
1623 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1624 op_data->op_bias |= MDS_DATA_MODIFIED;
1625 ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
1628 op_data->op_attr = *attr;
1630 rc = ll_md_setattr(dentry, op_data);
1634 if (!S_ISREG(inode->i_mode) || hsm_import)
1637 if (attr->ia_valid & (ATTR_SIZE |
1638 ATTR_ATIME | ATTR_ATIME_SET |
1639 ATTR_MTIME | ATTR_MTIME_SET |
1640 ATTR_CTIME | ATTR_CTIME_SET)) {
1641 /* For truncate and utimes sending attributes to OSTs, setting
1642 * mtime/atime to the past will be performed under PW [0:EOF]
1643 * extent lock (new_size:EOF for truncate). It may seem
1644 * excessive to send mtime/atime updates to OSTs when not
1645 * setting times to past, but it is necessary due to possible
1646 * time de-synchronization between MDT inode and OST objects */
1647 rc = cl_setattr_ost(lli->lli_clob, attr, 0);
1650 /* If the file was restored, it needs to set dirty flag.
1652 * We've already sent MDS_DATA_MODIFIED flag in
1653 * ll_md_setattr() for truncate. However, the MDT refuses to
1654 * set the HS_DIRTY flag on released files, so we have to set
1655 * it again if the file has been restored. Please check how
1656 * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
1658 * Please notice that if the file is not released, the previous
1659 * MDS_DATA_MODIFIED has taken effect and usually
1660 * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
1661 * This way we can save an RPC for common open + trunc
1663 if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
1664 struct hsm_state_set hss = {
1665 .hss_valid = HSS_SETMASK,
1666 .hss_setmask = HS_DIRTY,
1670 rc2 = ll_hsm_state_set(inode, &hss);
1671 /* truncate and write can happen at the same time, so that
1672 * the file can be set modified even though the file is not
1673 * restored from released state, and ll_hsm_state_set() is
1674 * not applicable for the file, and rc2 < 0 is normal in this
1677 CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
1678 PFID(ll_inode2fid(inode)), rc2);
1683 if (op_data != NULL)
1684 ll_finish_md_op_data(op_data);
1686 if (S_ISREG(inode->i_mode)) {
1688 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1689 inode_dio_wait(inode);
1692 ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
1693 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1698 int ll_setattr(struct dentry *de, struct iattr *attr)
1700 int mode = de->d_inode->i_mode;
1702 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1703 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1704 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1706 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1707 (ATTR_SIZE|ATTR_MODE)) &&
1708 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1709 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1710 !(attr->ia_mode & S_ISGID))))
1711 attr->ia_valid |= ATTR_FORCE;
1713 if ((attr->ia_valid & ATTR_MODE) &&
1715 !(attr->ia_mode & S_ISUID) &&
1716 !(attr->ia_valid & ATTR_KILL_SUID))
1717 attr->ia_valid |= ATTR_KILL_SUID;
1719 if ((attr->ia_valid & ATTR_MODE) &&
1720 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1721 !(attr->ia_mode & S_ISGID) &&
1722 !(attr->ia_valid & ATTR_KILL_SGID))
1723 attr->ia_valid |= ATTR_KILL_SGID;
1725 return ll_setattr_raw(de, attr, false);
1728 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1729 __u64 max_age, __u32 flags)
1731 struct ll_sb_info *sbi = ll_s2sbi(sb);
1732 struct obd_statfs obd_osfs;
1736 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1738 CERROR("md_statfs fails: rc = %d\n", rc);
1742 osfs->os_type = sb->s_magic;
1744 CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
1745 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1747 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1748 flags |= OBD_STATFS_NODELAY;
1750 rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1752 CERROR("obd_statfs fails: rc = %d\n", rc);
1756 CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
1757 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1760 osfs->os_bsize = obd_osfs.os_bsize;
1761 osfs->os_blocks = obd_osfs.os_blocks;
1762 osfs->os_bfree = obd_osfs.os_bfree;
1763 osfs->os_bavail = obd_osfs.os_bavail;
1765 /* If we don't have as many objects free on the OST as inodes
1766 * on the MDS, we reduce the total number of inodes to
1767 * compensate, so that the "inodes in use" number is correct.
1769 if (obd_osfs.os_ffree < osfs->os_ffree) {
1770 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1772 osfs->os_ffree = obd_osfs.os_ffree;
1777 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1779 struct super_block *sb = de->d_sb;
1780 struct obd_statfs osfs;
1781 __u64 fsid = huge_encode_dev(sb->s_dev);
1784 CDEBUG(D_VFSTRACE, "VFS Op: at %llu jiffies\n", get_jiffies_64());
1785 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1787 /* Some amount of caching on the client is allowed */
1788 rc = ll_statfs_internal(sb, &osfs,
1789 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1794 statfs_unpack(sfs, &osfs);
1796 /* We need to downshift for all 32-bit kernels, because we can't
1797 * tell if the kernel is being called via sys_statfs64() or not.
1798 * Stop before overflowing f_bsize - in which case it is better
1799 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1800 if (sizeof(long) < 8) {
1801 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1804 osfs.os_blocks >>= 1;
1805 osfs.os_bfree >>= 1;
1806 osfs.os_bavail >>= 1;
1810 sfs->f_blocks = osfs.os_blocks;
1811 sfs->f_bfree = osfs.os_bfree;
1812 sfs->f_bavail = osfs.os_bavail;
1813 sfs->f_fsid.val[0] = (__u32)fsid;
1814 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
1818 void ll_inode_size_lock(struct inode *inode)
1820 struct ll_inode_info *lli;
1822 LASSERT(!S_ISDIR(inode->i_mode));
1824 lli = ll_i2info(inode);
1825 mutex_lock(&lli->lli_size_mutex);
1828 void ll_inode_size_unlock(struct inode *inode)
1830 struct ll_inode_info *lli;
1832 lli = ll_i2info(inode);
1833 mutex_unlock(&lli->lli_size_mutex);
1836 int ll_update_inode(struct inode *inode, struct lustre_md *md)
1838 struct ll_inode_info *lli = ll_i2info(inode);
1839 struct mdt_body *body = md->body;
1840 struct ll_sb_info *sbi = ll_i2sbi(inode);
1842 if (body->mbo_valid & OBD_MD_FLEASIZE)
1843 cl_file_inode_init(inode, md);
1845 if (S_ISDIR(inode->i_mode)) {
1848 rc = ll_update_lsm_md(inode, md);
1853 #ifdef CONFIG_FS_POSIX_ACL
1854 if (body->mbo_valid & OBD_MD_FLACL) {
1855 spin_lock(&lli->lli_lock);
1856 if (lli->lli_posix_acl)
1857 posix_acl_release(lli->lli_posix_acl);
1858 lli->lli_posix_acl = md->posix_acl;
1859 spin_unlock(&lli->lli_lock);
1862 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
1863 sbi->ll_flags & LL_SBI_32BIT_API);
1864 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
1866 if (body->mbo_valid & OBD_MD_FLATIME) {
1867 if (body->mbo_atime > LTIME_S(inode->i_atime))
1868 LTIME_S(inode->i_atime) = body->mbo_atime;
1869 lli->lli_atime = body->mbo_atime;
1872 if (body->mbo_valid & OBD_MD_FLMTIME) {
1873 if (body->mbo_mtime > LTIME_S(inode->i_mtime)) {
1874 CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1875 "to %llu\n", inode->i_ino,
1876 LTIME_S(inode->i_mtime), body->mbo_mtime);
1877 LTIME_S(inode->i_mtime) = body->mbo_mtime;
1879 lli->lli_mtime = body->mbo_mtime;
1882 if (body->mbo_valid & OBD_MD_FLCTIME) {
1883 if (body->mbo_ctime > LTIME_S(inode->i_ctime))
1884 LTIME_S(inode->i_ctime) = body->mbo_ctime;
1885 lli->lli_ctime = body->mbo_ctime;
1888 if (body->mbo_valid & OBD_MD_FLMODE)
1889 inode->i_mode = (inode->i_mode & S_IFMT) |
1890 (body->mbo_mode & ~S_IFMT);
1892 if (body->mbo_valid & OBD_MD_FLTYPE)
1893 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1894 (body->mbo_mode & S_IFMT);
1896 LASSERT(inode->i_mode != 0);
1897 if (S_ISREG(inode->i_mode))
1898 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
1899 LL_MAX_BLKSIZE_BITS);
1901 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1903 if (body->mbo_valid & OBD_MD_FLUID)
1904 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
1905 if (body->mbo_valid & OBD_MD_FLGID)
1906 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
1907 if (body->mbo_valid & OBD_MD_FLFLAGS)
1908 inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
1909 if (body->mbo_valid & OBD_MD_FLNLINK)
1910 set_nlink(inode, body->mbo_nlink);
1911 if (body->mbo_valid & OBD_MD_FLRDEV)
1912 inode->i_rdev = old_decode_dev(body->mbo_rdev);
1914 if (body->mbo_valid & OBD_MD_FLID) {
1915 /* FID shouldn't be changed! */
1916 if (fid_is_sane(&lli->lli_fid)) {
1917 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
1918 "Trying to change FID "DFID
1919 " to the "DFID", inode "DFID"(%p)\n",
1920 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
1921 PFID(ll_inode2fid(inode)), inode);
1923 lli->lli_fid = body->mbo_fid1;
1927 LASSERT(fid_seq(&lli->lli_fid) != 0);
1929 if (body->mbo_valid & OBD_MD_FLSIZE) {
1930 i_size_write(inode, body->mbo_size);
1932 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
1933 PFID(ll_inode2fid(inode)),
1934 (unsigned long long)body->mbo_size);
1936 if (body->mbo_valid & OBD_MD_FLBLOCKS)
1937 inode->i_blocks = body->mbo_blocks;
1940 if (body->mbo_valid & OBD_MD_TSTATE) {
1941 /* Set LLIF_FILE_RESTORING if restore ongoing and
1942 * clear it when done to ensure to start again
1943 * glimpsing updated attrs
1945 if (body->mbo_t_state & MS_RESTORE)
1946 ll_file_set_flag(lli, LLIF_FILE_RESTORING);
1948 ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
1954 int ll_read_inode2(struct inode *inode, void *opaque)
1956 struct lustre_md *md = opaque;
1957 struct ll_inode_info *lli = ll_i2info(inode);
1961 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1962 PFID(&lli->lli_fid), inode);
1964 /* Core attributes from the MDS first. This is a new inode, and
1965 * the VFS doesn't zero times in the core inode so we have to do
1966 * it ourselves. They will be overwritten by either MDS or OST
1967 * attributes - we just need to make sure they aren't newer. */
1968 LTIME_S(inode->i_mtime) = 0;
1969 LTIME_S(inode->i_atime) = 0;
1970 LTIME_S(inode->i_ctime) = 0;
1972 rc = ll_update_inode(inode, md);
1976 /* OIDEBUG(inode); */
1978 #ifdef HAVE_BACKING_DEV_INFO
1979 /* initializing backing dev info. */
1980 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
1982 if (S_ISREG(inode->i_mode)) {
1983 struct ll_sb_info *sbi = ll_i2sbi(inode);
1984 inode->i_op = &ll_file_inode_operations;
1985 inode->i_fop = sbi->ll_fop;
1986 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
1988 } else if (S_ISDIR(inode->i_mode)) {
1989 inode->i_op = &ll_dir_inode_operations;
1990 inode->i_fop = &ll_dir_operations;
1992 } else if (S_ISLNK(inode->i_mode)) {
1993 inode->i_op = &ll_fast_symlink_inode_operations;
1996 inode->i_op = &ll_special_inode_operations;
1998 init_special_inode(inode, inode->i_mode,
2007 void ll_delete_inode(struct inode *inode)
2009 struct ll_inode_info *lli = ll_i2info(inode);
2012 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
2013 /* It is last chance to write out dirty pages,
2014 * otherwise we may lose data while umount */
2015 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
2017 truncate_inode_pages_final(&inode->i_data);
2019 LASSERTF(inode->i_data.nrpages == 0, "inode="DFID"(%p) nrpages=%lu, "
2020 "see https://jira.hpdd.intel.com/browse/LU-118\n",
2021 PFID(ll_inode2fid(inode)), inode, inode->i_data.nrpages);
2023 #ifdef HAVE_SBOPS_EVICT_INODE
2024 ll_clear_inode(inode);
2031 int ll_iocontrol(struct inode *inode, struct file *file,
2032 unsigned int cmd, unsigned long arg)
2034 struct ll_sb_info *sbi = ll_i2sbi(inode);
2035 struct ptlrpc_request *req = NULL;
2040 case FSFILT_IOC_GETFLAGS: {
2041 struct mdt_body *body;
2042 struct md_op_data *op_data;
2044 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2045 0, 0, LUSTRE_OPC_ANY,
2047 if (IS_ERR(op_data))
2048 RETURN(PTR_ERR(op_data));
2050 op_data->op_valid = OBD_MD_FLFLAGS;
2051 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2052 ll_finish_md_op_data(op_data);
2054 CERROR("%s: failure inode "DFID": rc = %d\n",
2055 sbi->ll_md_exp->exp_obd->obd_name,
2056 PFID(ll_inode2fid(inode)), rc);
2060 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2062 flags = body->mbo_flags;
2064 ptlrpc_req_finished(req);
2066 RETURN(put_user(flags, (int __user *)arg));
2068 case FSFILT_IOC_SETFLAGS: {
2070 struct md_op_data *op_data;
2071 struct cl_object *obj;
2073 if (get_user(flags, (int __user *)arg))
2076 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2077 LUSTRE_OPC_ANY, NULL);
2078 if (IS_ERR(op_data))
2079 RETURN(PTR_ERR(op_data));
2081 op_data->op_attr_flags = flags;
2082 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
2083 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2084 ll_finish_md_op_data(op_data);
2085 ptlrpc_req_finished(req);
2089 inode->i_flags = ll_ext_to_inode_flags(flags);
2091 obj = ll_i2info(inode)->lli_clob;
2095 OBD_ALLOC_PTR(attr);
2099 attr->ia_valid = ATTR_ATTR_FLAG;
2100 rc = cl_setattr_ost(obj, attr, flags);
2112 int ll_flush_ctx(struct inode *inode)
2114 struct ll_sb_info *sbi = ll_i2sbi(inode);
2116 CDEBUG(D_SEC, "flush context for user %d\n",
2117 from_kuid(&init_user_ns, current_uid()));
2119 obd_set_info_async(NULL, sbi->ll_md_exp,
2120 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2122 obd_set_info_async(NULL, sbi->ll_dt_exp,
2123 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2128 /* umount -f client means force down, don't save state */
2129 void ll_umount_begin(struct super_block *sb)
2131 struct ll_sb_info *sbi = ll_s2sbi(sb);
2132 struct obd_device *obd;
2133 struct obd_ioctl_data *ioc_data;
2134 struct l_wait_info lwi;
2135 wait_queue_head_t waitq;
2138 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2139 sb->s_count, atomic_read(&sb->s_active));
2141 obd = class_exp2obd(sbi->ll_md_exp);
2143 CERROR("Invalid MDC connection handle %#llx\n",
2144 sbi->ll_md_exp->exp_handle.h_cookie);
2150 obd = class_exp2obd(sbi->ll_dt_exp);
2152 CERROR("Invalid LOV connection handle %#llx\n",
2153 sbi->ll_dt_exp->exp_handle.h_cookie);
2159 OBD_ALLOC_PTR(ioc_data);
2161 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2162 sizeof *ioc_data, ioc_data, NULL);
2164 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2165 sizeof *ioc_data, ioc_data, NULL);
2167 OBD_FREE_PTR(ioc_data);
2170 /* Really, we'd like to wait until there are no requests outstanding,
2171 * and then continue. For now, we just periodically checking for vfs
2172 * to decrement mnt_cnt and hope to finish it within 10sec.
2174 init_waitqueue_head(&waitq);
2175 lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(10),
2176 cfs_time_seconds(1), NULL, NULL);
2177 l_wait_event(waitq, may_umount(sbi->ll_mnt.mnt), &lwi);
2182 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2184 struct ll_sb_info *sbi = ll_s2sbi(sb);
2185 char *profilenm = get_profile_name(sb);
2189 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2190 read_only = *flags & MS_RDONLY;
2191 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2192 sizeof(KEY_READ_ONLY),
2193 KEY_READ_ONLY, sizeof(read_only),
2196 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2197 profilenm, read_only ?
2198 "read-only" : "read-write", err);
2203 sb->s_flags |= MS_RDONLY;
2205 sb->s_flags &= ~MS_RDONLY;
2207 if (sbi->ll_flags & LL_SBI_VERBOSE)
2208 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2209 read_only ? "read-only" : "read-write");
2215 * Cleanup the open handle that is cached on MDT-side.
2217 * For open case, the client side open handling thread may hit error
2218 * after the MDT grant the open. Under such case, the client should
2219 * send close RPC to the MDT as cleanup; otherwise, the open handle
2220 * on the MDT will be leaked there until the client umount or evicted.
2222 * In further, if someone unlinked the file, because the open handle
2223 * holds the reference on such file/object, then it will block the
2224 * subsequent threads that want to locate such object via FID.
2226 * \param[in] sb super block for this file-system
2227 * \param[in] open_req pointer to the original open request
2229 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
2231 struct mdt_body *body;
2232 struct md_op_data *op_data;
2233 struct ptlrpc_request *close_req = NULL;
2234 struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
2237 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
2238 OBD_ALLOC_PTR(op_data);
2239 if (op_data == NULL) {
2240 CWARN("%s: cannot allocate op_data to release open handle for "
2242 ll_get_fsname(sb, NULL, 0), PFID(&body->mbo_fid1));
2247 op_data->op_fid1 = body->mbo_fid1;
2248 op_data->op_handle = body->mbo_handle;
2249 op_data->op_mod_time = ktime_get_real_seconds();
2250 md_close(exp, op_data, NULL, &close_req);
2251 ptlrpc_req_finished(close_req);
2252 ll_finish_md_op_data(op_data);
2257 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2258 struct super_block *sb, struct lookup_intent *it)
2260 struct ll_sb_info *sbi = NULL;
2261 struct lustre_md md = { NULL };
2265 LASSERT(*inode || sb);
2266 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2267 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2268 sbi->ll_md_exp, &md);
2273 rc = ll_update_inode(*inode, &md);
2277 LASSERT(sb != NULL);
2280 * At this point server returns to client's same fid as client
2281 * generated for creating. So using ->fid1 is okay here.
2283 if (!fid_is_sane(&md.body->mbo_fid1)) {
2284 CERROR("%s: Fid is insane "DFID"\n",
2285 ll_get_fsname(sb, NULL, 0),
2286 PFID(&md.body->mbo_fid1));
2287 GOTO(out, rc = -EINVAL);
2290 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2291 sbi->ll_flags & LL_SBI_32BIT_API),
2293 if (IS_ERR(*inode)) {
2294 #ifdef CONFIG_FS_POSIX_ACL
2296 posix_acl_release(md.posix_acl);
2297 md.posix_acl = NULL;
2300 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2302 CERROR("new_inode -fatal: rc %d\n", rc);
2307 /* Handling piggyback layout lock.
2308 * Layout lock can be piggybacked by getattr and open request.
2309 * The lsm can be applied to inode only if it comes with a layout lock
2310 * otherwise correct layout may be overwritten, for example:
2311 * 1. proc1: mdt returns a lsm but not granting layout
2312 * 2. layout was changed by another client
2313 * 3. proc2: refresh layout and layout lock granted
2314 * 4. proc1: to apply a stale layout */
2315 if (it != NULL && it->it_lock_mode != 0) {
2316 struct lustre_handle lockh;
2317 struct ldlm_lock *lock;
2319 lockh.cookie = it->it_lock_handle;
2320 lock = ldlm_handle2lock(&lockh);
2321 LASSERT(lock != NULL);
2322 if (ldlm_has_layout(lock)) {
2323 struct cl_object_conf conf;
2325 memset(&conf, 0, sizeof(conf));
2326 conf.coc_opc = OBJECT_CONF_SET;
2327 conf.coc_inode = *inode;
2328 conf.coc_lock = lock;
2329 conf.u.coc_layout = md.layout;
2330 (void)ll_layout_conf(*inode, &conf);
2332 LDLM_LOCK_PUT(lock);
2338 md_free_lustre_md(sbi->ll_md_exp, &md);
2341 if (rc != 0 && it != NULL && it->it_op & IT_OPEN)
2342 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2347 int ll_obd_statfs(struct inode *inode, void __user *arg)
2349 struct ll_sb_info *sbi = NULL;
2350 struct obd_export *exp;
2352 struct obd_ioctl_data *data = NULL;
2356 if (!inode || !(sbi = ll_i2sbi(inode)))
2357 GOTO(out_statfs, rc = -EINVAL);
2359 rc = obd_ioctl_getdata(&buf, &len, arg);
2361 GOTO(out_statfs, rc);
2364 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2365 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2366 GOTO(out_statfs, rc = -EINVAL);
2368 if (data->ioc_inllen1 != sizeof(__u32) ||
2369 data->ioc_inllen2 != sizeof(__u32) ||
2370 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2371 data->ioc_plen2 != sizeof(struct obd_uuid))
2372 GOTO(out_statfs, rc = -EINVAL);
2374 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2375 if (type & LL_STATFS_LMV)
2376 exp = sbi->ll_md_exp;
2377 else if (type & LL_STATFS_LOV)
2378 exp = sbi->ll_dt_exp;
2380 GOTO(out_statfs, rc = -ENODEV);
2382 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2384 GOTO(out_statfs, rc);
2387 obd_ioctl_freedata(buf, len);
2391 int ll_process_config(struct lustre_cfg *lcfg)
2393 struct super_block *sb;
2398 /* The instance name contains the sb: lustre-client-aacfe000 */
2399 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2400 if (!ptr || !*(++ptr))
2402 if (sscanf(ptr, "%lx", &x) != 1)
2404 sb = (struct super_block *)x;
2405 /* This better be a real Lustre superblock! */
2406 LASSERT(s2lsi(sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2408 /* Note we have not called client_common_fill_super yet, so
2409 proc fns must be able to handle that! */
2410 rc = class_process_proc_param(PARAM_LLITE, lprocfs_llite_obd_vars,
2417 /* this function prepares md_op_data hint for passing it down to MD stack. */
2418 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
2419 struct inode *i1, struct inode *i2,
2420 const char *name, size_t namelen,
2421 __u32 mode, __u32 opc, void *data)
2423 LASSERT(i1 != NULL);
2426 /* Do not reuse namelen for something else. */
2428 return ERR_PTR(-EINVAL);
2430 if (namelen > ll_i2sbi(i1)->ll_namelen)
2431 return ERR_PTR(-ENAMETOOLONG);
2433 if (!lu_name_is_valid_2(name, namelen))
2434 return ERR_PTR(-EINVAL);
2437 if (op_data == NULL)
2438 OBD_ALLOC_PTR(op_data);
2440 if (op_data == NULL)
2441 return ERR_PTR(-ENOMEM);
2443 ll_i2gids(op_data->op_suppgids, i1, i2);
2444 op_data->op_fid1 = *ll_inode2fid(i1);
2445 op_data->op_default_stripe_offset = -1;
2446 if (S_ISDIR(i1->i_mode)) {
2447 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2448 if (opc == LUSTRE_OPC_MKDIR)
2449 op_data->op_default_stripe_offset =
2450 ll_i2info(i1)->lli_def_stripe_offset;
2454 op_data->op_fid2 = *ll_inode2fid(i2);
2455 if (S_ISDIR(i2->i_mode))
2456 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2458 fid_zero(&op_data->op_fid2);
2461 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2462 op_data->op_cli_flags |= CLI_HASH64;
2464 if (ll_need_32bit_api(ll_i2sbi(i1)))
2465 op_data->op_cli_flags |= CLI_API32;
2467 op_data->op_name = name;
2468 op_data->op_namelen = namelen;
2469 op_data->op_mode = mode;
2470 op_data->op_mod_time = cfs_time_current_sec();
2471 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2472 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2473 op_data->op_cap = cfs_curproc_cap_pack();
2474 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2475 filename_is_volatile(name, namelen, &op_data->op_mds)) {
2476 op_data->op_bias |= MDS_CREATE_VOLATILE;
2478 op_data->op_mds = 0;
2480 op_data->op_data = data;
2485 void ll_finish_md_op_data(struct md_op_data *op_data)
2487 security_release_secctx(op_data->op_file_secctx,
2488 op_data->op_file_secctx_size);
2489 OBD_FREE_PTR(op_data);
2492 #ifdef HAVE_SUPEROPS_USE_DENTRY
2493 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2495 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2498 struct ll_sb_info *sbi;
2500 #ifdef HAVE_SUPEROPS_USE_DENTRY
2501 LASSERT((seq != NULL) && (dentry != NULL));
2502 sbi = ll_s2sbi(dentry->d_sb);
2504 LASSERT((seq != NULL) && (vfs != NULL));
2505 sbi = ll_s2sbi(vfs->mnt_sb);
2508 if (sbi->ll_flags & LL_SBI_NOLCK)
2509 seq_puts(seq, ",nolock");
2511 if (sbi->ll_flags & LL_SBI_FLOCK)
2512 seq_puts(seq, ",flock");
2514 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2515 seq_puts(seq, ",localflock");
2517 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2518 seq_puts(seq, ",user_xattr");
2520 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2521 seq_puts(seq, ",lazystatfs");
2523 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2524 seq_puts(seq, ",user_fid2path");
2526 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
2527 seq_puts(seq, ",always_ping");
2533 * Get obd name by cmd, and copy out to user space
2535 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2537 struct ll_sb_info *sbi = ll_i2sbi(inode);
2538 struct obd_device *obd;
2541 if (cmd == OBD_IOC_GETDTNAME)
2542 obd = class_exp2obd(sbi->ll_dt_exp);
2543 else if (cmd == OBD_IOC_GETMDNAME)
2544 obd = class_exp2obd(sbi->ll_md_exp);
2551 if (copy_to_user((void __user *)arg, obd->obd_name,
2552 strlen(obd->obd_name) + 1))
2559 * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
2560 * fsname will be returned in this buffer; otherwise, a static buffer will be
2561 * used to store the fsname and returned to caller.
2563 char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
2565 static char fsname_static[MTI_NAME_MAXLEN];
2566 struct lustre_sb_info *lsi = s2lsi(sb);
2571 /* this means the caller wants to use static buffer
2572 * and it doesn't care about race. Usually this is
2573 * in error reporting path */
2574 buf = fsname_static;
2575 buflen = sizeof(fsname_static);
2578 len = strlen(lsi->lsi_lmd->lmd_profile);
2579 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
2580 if (ptr && (strcmp(ptr, "-client") == 0))
2583 if (unlikely(len >= buflen))
2585 strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
2591 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2598 p.mnt = current->fs->root.mnt;
2600 path = d_path(&p, buf, bufsize);
2605 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2607 char *buf, *path = NULL;
2608 struct dentry *dentry = NULL;
2609 struct inode *inode = page->mapping->host;
2611 /* this can be called inside spin lock so use GFP_ATOMIC. */
2612 buf = (char *)__get_free_page(GFP_ATOMIC);
2614 dentry = d_find_alias(page->mapping->host);
2616 path = ll_d_path(dentry, buf, PAGE_SIZE);
2620 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2621 "(rc %d)\n", ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
2622 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2623 PFID(ll_inode2fid(inode)),
2624 (path && !IS_ERR(path)) ? path : "", ioret);
2630 free_page((unsigned long)buf);
2633 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
2634 struct lov_user_md **kbuf)
2636 struct lov_user_md lum;
2640 if (copy_from_user(&lum, md, sizeof(lum)))
2643 lum_size = ll_lov_user_md_size(&lum);
2647 OBD_ALLOC(*kbuf, lum_size);
2651 if (copy_from_user(*kbuf, md, lum_size) != 0) {
2652 OBD_FREE(*kbuf, lum_size);
2660 * Compute llite root squash state after a change of root squash
2661 * configuration setting or add/remove of a lnet nid
2663 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2665 struct root_squash_info *squash = &sbi->ll_squash;
2668 struct lnet_process_id id;
2670 /* Update norootsquash flag */
2671 down_write(&squash->rsi_sem);
2672 if (list_empty(&squash->rsi_nosquash_nids))
2673 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2675 /* Do not apply root squash as soon as one of our NIDs is
2676 * in the nosquash_nids list */
2679 while (LNetGetId(i++, &id) != -ENOENT) {
2680 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2682 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2688 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2690 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2692 up_write(&squash->rsi_sem);
2696 * Parse linkea content to extract information about a given hardlink
2698 * \param[in] ldata - Initialized linkea data
2699 * \param[in] linkno - Link identifier
2700 * \param[out] parent_fid - The entry's parent FID
2701 * \param[out] ln - Entry name destination buffer
2703 * \retval 0 on success
2704 * \retval Appropriate negative error code on failure
2706 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
2707 struct lu_fid *parent_fid, struct lu_name *ln)
2713 rc = linkea_init_with_rec(ldata);
2717 if (linkno >= ldata->ld_leh->leh_reccount)
2718 /* beyond last link */
2721 linkea_first_entry(ldata);
2722 for (idx = 0; ldata->ld_lee != NULL; idx++) {
2723 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
2728 linkea_next_entry(ldata);
2738 * Get parent FID and name of an identified link. Operation is performed for
2739 * a given link number, letting the caller iterate over linkno to list one or
2740 * all links of an entry.
2742 * \param[in] file - File descriptor against which to perform the operation
2743 * \param[in,out] arg - User-filled structure containing the linkno to operate
2744 * on and the available size. It is eventually filled with
2745 * the requested information or left untouched on error
2747 * \retval - 0 on success
2748 * \retval - Appropriate negative error code on failure
2750 int ll_getparent(struct file *file, struct getparent __user *arg)
2752 struct dentry *dentry = file_dentry(file);
2753 struct inode *inode = file_inode(file);
2754 struct linkea_data *ldata;
2755 struct lu_buf buf = LU_BUF_NULL;
2757 struct lu_fid parent_fid;
2764 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
2765 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
2768 if (get_user(name_size, &arg->gp_name_size))
2771 if (get_user(linkno, &arg->gp_linkno))
2774 if (name_size > PATH_MAX)
2777 OBD_ALLOC(ldata, sizeof(*ldata));
2781 rc = linkea_data_new(ldata, &buf);
2783 GOTO(ldata_free, rc);
2785 rc = ll_getxattr(dentry, XATTR_NAME_LINK, buf.lb_buf, buf.lb_len);
2789 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
2793 if (ln.ln_namelen >= name_size)
2794 GOTO(lb_free, rc = -EOVERFLOW);
2796 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
2797 GOTO(lb_free, rc = -EFAULT);
2799 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
2800 GOTO(lb_free, rc = -EFAULT);
2802 if (put_user('\0', arg->gp_name + ln.ln_namelen))
2803 GOTO(lb_free, rc = -EFAULT);
2808 OBD_FREE(ldata, sizeof(*ldata));