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, 2015, 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/time.h>
46 #include <linux/types.h>
47 #include <linux/version.h>
49 #include <linux/user_namespace.h>
50 #ifdef HAVE_UIDGID_HEADER
51 # include <linux/uidgid.h>
54 #include <lustre_ioctl.h>
55 #include <lustre_ha.h>
56 #include <lustre_dlm.h>
57 #include <lprocfs_status.h>
58 #include <lustre_disk.h>
59 #include <lustre_param.h>
60 #include <lustre_log.h>
61 #include <cl_object.h>
62 #include <obd_cksum.h>
63 #include "llite_internal.h"
65 struct kmem_cache *ll_file_data_slab;
68 #define log2(n) ffz(~(n))
71 static struct ll_sb_info *ll_init_sbi(void)
73 struct ll_sb_info *sbi = NULL;
75 unsigned long lru_page_max;
85 spin_lock_init(&sbi->ll_lock);
86 mutex_init(&sbi->ll_lco.lco_lock);
87 spin_lock_init(&sbi->ll_pp_extent_lock);
88 spin_lock_init(&sbi->ll_process_lock);
89 sbi->ll_rw_stats_on = 0;
92 pages = si.totalram - si.totalhigh;
93 lru_page_max = pages / 2;
95 /* initialize ll_cache data */
96 sbi->ll_cache = cl_cache_init(lru_page_max);
97 if (sbi->ll_cache == NULL) {
98 OBD_FREE(sbi, sizeof(*sbi));
102 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
103 SBI_DEFAULT_READAHEAD_MAX);
104 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
105 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
106 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
107 INIT_LIST_HEAD(&sbi->ll_conn_chain);
108 INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
110 ll_generate_random_uuid(uuid);
111 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
112 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
114 sbi->ll_flags |= LL_SBI_VERBOSE;
115 #ifdef ENABLE_CHECKSUM
116 sbi->ll_flags |= LL_SBI_CHECKSUM;
119 #ifdef HAVE_LRU_RESIZE_SUPPORT
120 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
123 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
124 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
126 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
130 /* metadata statahead is enabled by default */
131 sbi->ll_sa_max = LL_SA_RPC_DEF;
132 atomic_set(&sbi->ll_sa_total, 0);
133 atomic_set(&sbi->ll_sa_wrong, 0);
134 atomic_set(&sbi->ll_sa_running, 0);
135 atomic_set(&sbi->ll_agl_total, 0);
136 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
139 sbi->ll_squash.rsi_uid = 0;
140 sbi->ll_squash.rsi_gid = 0;
141 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
142 init_rwsem(&sbi->ll_squash.rsi_sem);
147 static void ll_free_sbi(struct super_block *sb)
149 struct ll_sb_info *sbi = ll_s2sbi(sb);
153 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
154 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
155 if (sbi->ll_cache != NULL) {
156 cl_cache_decref(sbi->ll_cache);
157 sbi->ll_cache = NULL;
159 OBD_FREE(sbi, sizeof(*sbi));
164 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
165 struct vfsmount *mnt)
167 struct inode *root = NULL;
168 struct ll_sb_info *sbi = ll_s2sbi(sb);
169 struct obd_device *obd;
170 struct obd_statfs *osfs = NULL;
171 struct ptlrpc_request *request = NULL;
172 struct obd_connect_data *data = NULL;
173 struct obd_uuid *uuid;
174 struct md_op_data *op_data;
175 struct lustre_md lmd;
177 int size, err, checksum;
180 obd = class_name2obd(md);
182 CERROR("MD %s: not setup or attached\n", md);
196 /* indicate the features supported by this client */
197 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
198 OBD_CONNECT_ATTRFID |
199 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
200 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
201 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
202 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
203 OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR |
204 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH|
205 OBD_CONNECT_EINPROGRESS |
206 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
207 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS |
208 OBD_CONNECT_MAX_EASIZE |
209 OBD_CONNECT_FLOCK_DEAD |
210 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
211 OBD_CONNECT_OPEN_BY_FID |
212 OBD_CONNECT_DIR_STRIPE |
213 OBD_CONNECT_BULK_MBITS |
216 #ifdef HAVE_LRU_RESIZE_SUPPORT
217 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
218 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
220 #ifdef CONFIG_FS_POSIX_ACL
221 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
224 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
225 /* flag mdc connection as lightweight, only used for test
226 * purpose, use with care */
227 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
229 data->ocd_ibits_known = MDS_INODELOCK_FULL;
230 data->ocd_version = LUSTRE_VERSION_CODE;
232 if (sb->s_flags & MS_RDONLY)
233 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
234 if (sbi->ll_flags & LL_SBI_USER_XATTR)
235 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
237 if (sbi->ll_flags & LL_SBI_FLOCK)
238 sbi->ll_fop = &ll_file_operations_flock;
239 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
240 sbi->ll_fop = &ll_file_operations;
242 sbi->ll_fop = &ll_file_operations_noflock;
245 data->ocd_connect_flags |= OBD_CONNECT_REAL;
246 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
247 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
249 /* always ping even if server suppress_pings */
250 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
251 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
253 data->ocd_brw_size = MD_MAX_BRW_SIZE;
255 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
257 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
258 "recovery, of which this client is not a "
259 "part. Please wait for recovery to complete,"
260 " abort, or time out.\n", md);
263 CERROR("cannot connect to %s: rc = %d\n", md, err);
267 sbi->ll_md_exp->exp_connect_data = *data;
269 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
270 LUSTRE_SEQ_METADATA);
272 CERROR("%s: Can't init metadata layer FID infrastructure, "
273 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
277 /* For mount, we only need fs info from MDT0, and also in DNE, it
278 * can make sure the client can be mounted as long as MDT0 is
280 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
281 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
282 OBD_STATFS_FOR_MDT0);
284 GOTO(out_md_fid, err);
286 /* This needs to be after statfs to ensure connect has finished.
287 * Note that "data" does NOT contain the valid connect reply.
288 * If connecting to a 1.8 server there will be no LMV device, so
289 * we can access the MDC export directly and exp_connect_flags will
290 * be non-zero, but if accessing an upgraded 2.1 server it will
291 * have the correct flags filled in.
292 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
293 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
294 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
295 valid != CLIENT_CONNECT_MDT_REQD) {
298 OBD_ALLOC_WAIT(buf, PAGE_CACHE_SIZE);
299 obd_connect_flags2str(buf, PAGE_CACHE_SIZE,
300 valid ^ CLIENT_CONNECT_MDT_REQD, ",");
301 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
302 "feature(s) needed for correct operation "
303 "of this client (%s). Please upgrade "
304 "server or downgrade client.\n",
305 sbi->ll_md_exp->exp_obd->obd_name, buf);
306 OBD_FREE(buf, PAGE_CACHE_SIZE);
307 GOTO(out_md_fid, err = -EPROTO);
310 size = sizeof(*data);
311 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
312 KEY_CONN_DATA, &size, data);
314 CERROR("%s: Get connect data failed: rc = %d\n",
315 sbi->ll_md_exp->exp_obd->obd_name, err);
316 GOTO(out_md_fid, err);
319 LASSERT(osfs->os_bsize);
320 sb->s_blocksize = osfs->os_bsize;
321 sb->s_blocksize_bits = log2(osfs->os_bsize);
322 sb->s_magic = LL_SUPER_MAGIC;
323 sb->s_maxbytes = MAX_LFS_FILESIZE;
324 sbi->ll_namelen = osfs->os_namelen;
326 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
327 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
328 LCONSOLE_INFO("Disabling user_xattr feature because "
329 "it is not supported on the server\n");
330 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
333 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
335 sb->s_flags |= MS_POSIXACL;
337 sbi->ll_flags |= LL_SBI_ACL;
339 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
341 sb->s_flags &= ~MS_POSIXACL;
343 sbi->ll_flags &= ~LL_SBI_ACL;
346 if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
347 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
348 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
349 LCONSOLE_INFO("client is set as remote by default.\n");
352 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
353 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
354 LCONSOLE_INFO("client claims to be remote, but server "
355 "rejected, forced to be local.\n");
359 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
360 sbi->ll_flags |= LL_SBI_64BIT_HASH;
362 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
363 sbi->ll_md_brw_pages = data->ocd_brw_size >> PAGE_CACHE_SHIFT;
365 sbi->ll_md_brw_pages = 1;
367 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
368 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
370 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
371 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
372 LCONSOLE_INFO("%s: disabling xattr cache due to "
373 "unknown maximum xattr size.\n", dt);
375 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
376 sbi->ll_xattr_cache_enabled = 1;
380 obd = class_name2obd(dt);
382 CERROR("DT %s: not setup or attached\n", dt);
383 GOTO(out_md_fid, err = -ENODEV);
386 /* pass client page size via ocd_grant_blkbits, the server should report
387 * back its backend blocksize for grant calculation purpose */
388 data->ocd_grant_blkbits = PAGE_SHIFT;
390 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
391 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
392 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
393 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
394 OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
395 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
396 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
397 OBD_CONNECT_MAXBYTES |
398 OBD_CONNECT_EINPROGRESS |
399 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
400 OBD_CONNECT_LAYOUTLOCK |
401 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
402 OBD_CONNECT_BULK_MBITS;
404 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
405 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
407 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
408 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
409 * disabled by default, because it can still be enabled on the
410 * fly via /proc. As a consequence, we still need to come to an
411 * agreement on the supported algorithms at connect time */
412 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
414 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
415 data->ocd_cksum_types = OBD_CKSUM_ADLER;
417 data->ocd_cksum_types = cksum_types_supported_client();
420 #ifdef HAVE_LRU_RESIZE_SUPPORT
421 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
423 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
424 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
426 /* always ping even if server suppress_pings */
427 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
428 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
430 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
431 "ocd_grant: %d\n", data->ocd_connect_flags,
432 data->ocd_version, data->ocd_grant);
434 obd->obd_upcall.onu_owner = &sbi->ll_lco;
435 obd->obd_upcall.onu_upcall = cl_ocd_update;
437 data->ocd_brw_size = DT_MAX_BRW_SIZE;
439 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data,
442 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
443 "recovery, of which this client is not a "
444 "part. Please wait for recovery to "
445 "complete, abort, or time out.\n", dt);
448 CERROR("%s: Cannot connect to %s: rc = %d\n",
449 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
453 sbi->ll_dt_exp->exp_connect_data = *data;
455 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
456 LUSTRE_SEQ_METADATA);
458 CERROR("%s: Can't init data layer FID infrastructure, "
459 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
463 mutex_lock(&sbi->ll_lco.lco_lock);
464 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
465 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
466 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
467 mutex_unlock(&sbi->ll_lco.lco_lock);
469 fid_zero(&sbi->ll_root_fid);
470 err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
473 CERROR("cannot mds_connect: rc = %d\n", err);
474 GOTO(out_lock_cn_cb, err);
476 if (!fid_is_sane(&sbi->ll_root_fid)) {
477 CERROR("%s: Invalid root fid "DFID" during mount\n",
478 sbi->ll_md_exp->exp_obd->obd_name,
479 PFID(&sbi->ll_root_fid));
480 GOTO(out_lock_cn_cb, err = -EINVAL);
482 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
484 sb->s_op = &lustre_super_operations;
485 #if THREAD_SIZE >= 8192 /*b=17630*/
486 sb->s_export_op = &lustre_export_operations;
490 * XXX: move this to after cbd setup? */
491 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
492 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
493 valid |= OBD_MD_FLRMTPERM;
494 else if (sbi->ll_flags & LL_SBI_ACL)
495 valid |= OBD_MD_FLACL;
497 OBD_ALLOC_PTR(op_data);
499 GOTO(out_lock_cn_cb, err = -ENOMEM);
501 op_data->op_fid1 = sbi->ll_root_fid;
502 op_data->op_mode = 0;
503 op_data->op_valid = valid;
505 err = md_getattr(sbi->ll_md_exp, op_data, &request);
507 OBD_FREE_PTR(op_data);
509 CERROR("%s: md_getattr failed for root: rc = %d\n",
510 sbi->ll_md_exp->exp_obd->obd_name, err);
511 GOTO(out_lock_cn_cb, err);
514 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
515 sbi->ll_md_exp, &lmd);
517 CERROR("failed to understand root inode md: rc = %d\n", err);
518 ptlrpc_req_finished(request);
519 GOTO(out_lock_cn_cb, err);
522 LASSERT(fid_is_sane(&sbi->ll_root_fid));
523 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
524 sbi->ll_flags & LL_SBI_32BIT_API),
526 md_free_lustre_md(sbi->ll_md_exp, &lmd);
527 ptlrpc_req_finished(request);
530 #ifdef CONFIG_FS_POSIX_ACL
532 posix_acl_release(lmd.posix_acl);
533 lmd.posix_acl = NULL;
536 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
538 CERROR("lustre_lite: bad iget4 for root\n");
542 #ifdef CONFIG_FS_POSIX_ACL
543 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
544 rct_init(&sbi->ll_rct);
545 et_init(&sbi->ll_et);
549 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
550 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
551 KEY_CHECKSUM, sizeof(checksum), &checksum,
555 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
556 KEY_CACHE_SET, sizeof(*sbi->ll_cache),
557 sbi->ll_cache, NULL);
559 sb->s_root = d_make_root(root);
560 if (sb->s_root == NULL) {
561 CERROR("%s: can't make root dentry\n",
562 ll_get_fsname(sb, NULL, 0));
563 GOTO(out_root, err = -ENOMEM);
565 #ifdef HAVE_DCACHE_LOCK
566 sb->s_root->d_op = &ll_d_ops;
569 sbi->ll_sdev_orig = sb->s_dev;
571 /* We set sb->s_dev equal on all lustre clients in order to support
572 * NFS export clustering. NFSD requires that the FSID be the same
574 /* s_dev is also used in lt_compare() to compare two fs, but that is
575 * only a node-local comparison. */
576 uuid = obd_get_uuid(sbi->ll_md_exp);
578 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
584 if (proc_lustre_fs_root != NULL) {
585 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
588 CERROR("%s: could not register mount in lprocfs: "
589 "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
599 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
601 obd_disconnect(sbi->ll_dt_exp);
602 sbi->ll_dt_exp = NULL;
604 obd_fid_fini(sbi->ll_md_exp->exp_obd);
606 obd_disconnect(sbi->ll_md_exp);
607 sbi->ll_md_exp = NULL;
616 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
620 size = sizeof(*lmmsize);
621 rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
622 KEY_MAX_EASIZE, &size, lmmsize);
624 CERROR("%s: cannot get max LOV EA size: rc = %d\n",
625 sbi->ll_dt_exp->exp_obd->obd_name, rc);
630 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
631 KEY_MAX_EASIZE, &size, lmmsize);
633 CERROR("Get max mdsize error rc %d\n", rc);
639 * Get the value of the default_easize parameter.
641 * \see client_obd::cl_default_mds_easize
643 * \param[in] sbi superblock info for this filesystem
644 * \param[out] lmmsize pointer to storage location for value
646 * \retval 0 on success
647 * \retval negative negated errno on failure
649 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
654 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
655 KEY_DEFAULT_EASIZE, &size, lmmsize);
657 CERROR("Get default mdsize error rc %d\n", rc);
663 * Set the default_easize parameter to the given value.
665 * \see client_obd::cl_default_mds_easize
667 * \param[in] sbi superblock info for this filesystem
668 * \param[in] lmmsize the size to set
670 * \retval 0 on success
671 * \retval negative negated errno on failure
673 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
677 if (lmmsize < sizeof(struct lov_mds_md) ||
678 lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
681 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
682 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
683 sizeof(int), &lmmsize, NULL);
688 static void ll_dump_inode(struct inode *inode)
690 struct ll_d_hlist_node *tmp;
691 int dentry_count = 0;
693 LASSERT(inode != NULL);
695 ll_d_hlist_for_each(tmp, &inode->i_dentry)
698 CERROR("%s: inode %p dump: dev=%s fid="DFID
699 " mode=%o count=%u, %d dentries\n",
700 ll_get_fsname(inode->i_sb, NULL, 0), inode,
701 ll_i2mdexp(inode)->exp_obd->obd_name, PFID(ll_inode2fid(inode)),
702 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
705 void lustre_dump_dentry(struct dentry *dentry, int recur)
707 struct list_head *tmp;
710 LASSERT(dentry != NULL);
712 list_for_each(tmp, &dentry->d_subdirs)
715 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
716 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
717 dentry->d_name.len, dentry->d_name.name,
718 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
719 dentry->d_parent, dentry->d_inode, ll_d_count(dentry),
720 dentry->d_flags, dentry->d_fsdata, subdirs);
721 if (dentry->d_inode != NULL)
722 ll_dump_inode(dentry->d_inode);
727 list_for_each(tmp, &dentry->d_subdirs) {
728 struct dentry *d = list_entry(tmp, struct dentry, d_child);
729 lustre_dump_dentry(d, recur - 1);
733 static void client_common_put_super(struct super_block *sb)
735 struct ll_sb_info *sbi = ll_s2sbi(sb);
738 #ifdef CONFIG_FS_POSIX_ACL
739 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
740 et_fini(&sbi->ll_et);
741 rct_fini(&sbi->ll_rct);
747 list_del(&sbi->ll_conn_chain);
749 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
750 obd_disconnect(sbi->ll_dt_exp);
751 sbi->ll_dt_exp = NULL;
753 lprocfs_unregister_mountpoint(sbi);
755 obd_fid_fini(sbi->ll_md_exp->exp_obd);
756 obd_disconnect(sbi->ll_md_exp);
757 sbi->ll_md_exp = NULL;
762 void ll_kill_super(struct super_block *sb)
764 struct ll_sb_info *sbi;
768 if (!(sb->s_flags & MS_ACTIVE))
772 /* we need restore s_dev from changed for clustred NFS before put_super
773 * because new kernels have cached s_dev and change sb->s_dev in
774 * put_super not affected real removing devices */
776 sb->s_dev = sbi->ll_sdev_orig;
777 sbi->ll_umounting = 1;
779 /* wait running statahead threads to quit */
780 while (atomic_read(&sbi->ll_sa_running) > 0) {
781 set_current_state(TASK_UNINTERRUPTIBLE);
782 schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC >> 3));
789 static inline int ll_set_opt(const char *opt, char *data, int fl)
791 if (strncmp(opt, data, strlen(opt)) != 0)
797 /* non-client-specific mount options are parsed in lmd_parse */
798 static int ll_options(char *options, int *flags)
801 char *s1 = options, *s2;
807 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
810 CDEBUG(D_SUPER, "next opt=%s\n", s1);
811 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
816 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
821 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
826 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
831 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
836 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
841 tmp = ll_set_opt("context", s1, 1);
844 tmp = ll_set_opt("fscontext", s1, 1);
847 tmp = ll_set_opt("defcontext", s1, 1);
850 tmp = ll_set_opt("rootcontext", s1, 1);
853 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
858 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
863 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
869 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
874 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
879 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
884 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
889 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
894 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
899 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
904 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
909 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
914 tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
919 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
925 s2 = strchr(s1, ',');
933 void ll_lli_init(struct ll_inode_info *lli)
935 lli->lli_inode_magic = LLI_INODE_MAGIC;
937 spin_lock_init(&lli->lli_lock);
938 lli->lli_posix_acl = NULL;
939 lli->lli_remote_perms = NULL;
940 mutex_init(&lli->lli_rmtperm_mutex);
941 /* Do not set lli_fid, it has been initialized already. */
942 fid_zero(&lli->lli_pfid);
943 atomic_set(&lli->lli_open_count, 0);
944 lli->lli_rmtperm_time = 0;
945 lli->lli_mds_read_och = NULL;
946 lli->lli_mds_write_och = NULL;
947 lli->lli_mds_exec_och = NULL;
948 lli->lli_open_fd_read_count = 0;
949 lli->lli_open_fd_write_count = 0;
950 lli->lli_open_fd_exec_count = 0;
951 mutex_init(&lli->lli_och_mutex);
952 spin_lock_init(&lli->lli_agl_lock);
953 spin_lock_init(&lli->lli_layout_lock);
954 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
955 lli->lli_clob = NULL;
957 init_rwsem(&lli->lli_xattrs_list_rwsem);
958 mutex_init(&lli->lli_xattrs_enq_lock);
960 LASSERT(lli->lli_vfs_inode.i_mode != 0);
961 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
962 mutex_init(&lli->lli_readdir_mutex);
963 lli->lli_opendir_key = NULL;
965 spin_lock_init(&lli->lli_sa_lock);
966 lli->lli_opendir_pid = 0;
967 lli->lli_sa_enabled = 0;
968 lli->lli_def_stripe_offset = -1;
970 mutex_init(&lli->lli_size_mutex);
971 lli->lli_symlink_name = NULL;
972 init_rwsem(&lli->lli_trunc_sem);
973 range_lock_tree_init(&lli->lli_write_tree);
974 init_rwsem(&lli->lli_glimpse_sem);
975 lli->lli_glimpse_time = 0;
976 INIT_LIST_HEAD(&lli->lli_agl_list);
977 lli->lli_agl_index = 0;
978 lli->lli_async_rc = 0;
980 mutex_init(&lli->lli_layout_mutex);
983 static inline int ll_bdi_register(struct backing_dev_info *bdi)
985 static atomic_t ll_bdi_num = ATOMIC_INIT(0);
987 bdi->name = "lustre";
988 return bdi_register(bdi, NULL, "lustre-%d",
989 atomic_inc_return(&ll_bdi_num));
992 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
994 struct lustre_profile *lprof = NULL;
995 struct lustre_sb_info *lsi = s2lsi(sb);
996 struct ll_sb_info *sbi;
997 char *dt = NULL, *md = NULL;
998 char *profilenm = get_profile_name(sb);
999 struct config_llog_instance *cfg;
1000 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1001 const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
1005 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
1011 try_module_get(THIS_MODULE);
1013 /* client additional sb info */
1014 lsi->lsi_llsbi = sbi = ll_init_sbi();
1016 module_put(THIS_MODULE);
1021 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
1023 GOTO(out_free, err);
1025 err = bdi_init(&lsi->lsi_bdi);
1027 GOTO(out_free, err);
1028 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1029 #ifdef HAVE_BDI_CAP_MAP_COPY
1030 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1032 lsi->lsi_bdi.capabilities = 0;
1034 err = ll_bdi_register(&lsi->lsi_bdi);
1036 GOTO(out_free, err);
1038 sb->s_bdi = &lsi->lsi_bdi;
1039 #ifndef HAVE_DCACHE_LOCK
1040 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1041 sb->s_d_op = &ll_d_ops;
1044 /* Generate a string unique to this super, in case some joker tries
1045 to mount the same fs at two mount points.
1046 Use the address of the super itself.*/
1047 cfg->cfg_instance = sb;
1048 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1049 cfg->cfg_callback = class_config_llog_handler;
1050 /* set up client obds */
1051 err = lustre_process_log(sb, profilenm, cfg);
1053 GOTO(out_free, err);
1055 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1056 lprof = class_get_profile(profilenm);
1057 if (lprof == NULL) {
1058 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1059 " read from the MGS. Does that filesystem "
1060 "exist?\n", profilenm);
1061 GOTO(out_free, err = -EINVAL);
1063 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1064 lprof->lp_md, lprof->lp_dt);
1066 OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
1068 GOTO(out_free, err = -ENOMEM);
1069 sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
1071 OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
1073 GOTO(out_free, err = -ENOMEM);
1074 sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1076 /* connections, registrations, sb setup */
1077 err = client_common_fill_super(sb, md, dt, mnt);
1079 GOTO(out_free, err);
1081 sbi->ll_client_common_fill_super_succeeded = 1;
1085 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1087 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1089 class_put_profile(lprof);
1092 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1093 LCONSOLE_WARN("Mounted %s\n", profilenm);
1097 } /* ll_fill_super */
1099 void ll_put_super(struct super_block *sb)
1101 struct config_llog_instance cfg, params_cfg;
1102 struct obd_device *obd;
1103 struct lustre_sb_info *lsi = s2lsi(sb);
1104 struct ll_sb_info *sbi = ll_s2sbi(sb);
1105 char *profilenm = get_profile_name(sb);
1107 int next, force = 1, rc = 0;
1110 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1112 cfg.cfg_instance = sb;
1113 lustre_end_log(sb, profilenm, &cfg);
1115 params_cfg.cfg_instance = sb;
1116 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1118 if (sbi->ll_md_exp) {
1119 obd = class_exp2obd(sbi->ll_md_exp);
1121 force = obd->obd_force;
1124 /* Wait for unstable pages to be committed to stable storage */
1126 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
1127 rc = l_wait_event(sbi->ll_cache->ccc_unstable_waitq,
1128 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0,
1132 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1133 if (force == 0 && rc != -EINTR)
1134 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1137 /* We need to set force before the lov_disconnect in
1138 lustre_common_put_super, since l_d cleans up osc's as well. */
1141 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1143 obd->obd_force = force;
1147 if (sbi->ll_client_common_fill_super_succeeded) {
1148 /* Only if client_common_fill_super succeeded */
1149 client_common_put_super(sb);
1153 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1154 class_manual_cleanup(obd);
1157 if (sbi->ll_flags & LL_SBI_VERBOSE)
1158 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1161 class_del_profile(profilenm);
1163 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1164 bdi_destroy(&lsi->lsi_bdi);
1165 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1169 lsi->lsi_llsbi = NULL;
1171 lustre_common_put_super(sb);
1173 cl_env_cache_purge(~0);
1175 module_put(THIS_MODULE);
1178 } /* client_put_super */
1180 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1182 struct inode *inode = NULL;
1184 /* NOTE: we depend on atomic igrab() -bzzz */
1185 lock_res_and_lock(lock);
1186 if (lock->l_resource->lr_lvb_inode) {
1187 struct ll_inode_info * lli;
1188 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1189 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1190 inode = igrab(lock->l_resource->lr_lvb_inode);
1192 inode = lock->l_resource->lr_lvb_inode;
1193 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1194 D_WARNING, lock, "lr_lvb_inode %p is "
1195 "bogus: magic %08x",
1196 lock->l_resource->lr_lvb_inode,
1197 lli->lli_inode_magic);
1201 unlock_res_and_lock(lock);
1205 void ll_dir_clear_lsm_md(struct inode *inode)
1207 struct ll_inode_info *lli = ll_i2info(inode);
1209 LASSERT(S_ISDIR(inode->i_mode));
1211 if (lli->lli_lsm_md != NULL) {
1212 lmv_free_memmd(lli->lli_lsm_md);
1213 lli->lli_lsm_md = NULL;
1217 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1218 const struct lu_fid *fid,
1219 struct lustre_md *md)
1221 struct ll_sb_info *sbi = ll_s2sbi(sb);
1222 struct mdt_body *body = md->body;
1223 struct inode *inode;
1227 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1228 inode = iget_locked(sb, ino);
1229 if (inode == NULL) {
1230 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1231 ll_get_fsname(sb, NULL, 0), PFID(fid));
1232 RETURN(ERR_PTR(-ENOENT));
1235 if (inode->i_state & I_NEW) {
1236 struct ll_inode_info *lli = ll_i2info(inode);
1237 struct lmv_stripe_md *lsm = md->lmv;
1239 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1240 (body->mbo_mode & S_IFMT);
1241 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1244 LTIME_S(inode->i_mtime) = 0;
1245 LTIME_S(inode->i_atime) = 0;
1246 LTIME_S(inode->i_ctime) = 0;
1249 #ifdef HAVE_BACKING_DEV_INFO
1250 /* initializing backing dev info. */
1251 inode->i_mapping->backing_dev_info =
1252 &s2lsi(inode->i_sb)->lsi_bdi;
1254 inode->i_op = &ll_dir_inode_operations;
1255 inode->i_fop = &ll_dir_operations;
1256 lli->lli_fid = *fid;
1259 LASSERT(lsm != NULL);
1260 /* master object FID */
1261 lli->lli_pfid = body->mbo_fid1;
1262 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1263 lli, PFID(fid), PFID(&lli->lli_pfid));
1264 unlock_new_inode(inode);
1270 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1273 struct lmv_stripe_md *lsm = md->lmv;
1276 LASSERT(lsm != NULL);
1277 /* XXX sigh, this lsm_root initialization should be in
1278 * LMV layer, but it needs ll_iget right now, so we
1279 * put this here right now. */
1280 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1281 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1282 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1283 /* Unfortunately ll_iget will call ll_update_inode,
1284 * where the initialization of slave inode is slightly
1285 * different, so it reset lsm_md to NULL to avoid
1286 * initializing lsm for slave inode. */
1287 /* For migrating inode, master stripe and master object will
1288 * be same, so we only need assign this inode */
1289 if (lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION && i == 0)
1290 lsm->lsm_md_oinfo[i].lmo_root = inode;
1292 lsm->lsm_md_oinfo[i].lmo_root =
1293 ll_iget_anon_dir(inode->i_sb, fid, md);
1295 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1296 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1298 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1306 static inline int lli_lsm_md_eq(const struct lmv_stripe_md *lsm_md1,
1307 const struct lmv_stripe_md *lsm_md2)
1309 return lsm_md1->lsm_md_magic == lsm_md2->lsm_md_magic &&
1310 lsm_md1->lsm_md_stripe_count == lsm_md2->lsm_md_stripe_count &&
1311 lsm_md1->lsm_md_master_mdt_index ==
1312 lsm_md2->lsm_md_master_mdt_index &&
1313 lsm_md1->lsm_md_hash_type == lsm_md2->lsm_md_hash_type &&
1314 lsm_md1->lsm_md_layout_version ==
1315 lsm_md2->lsm_md_layout_version &&
1316 strcmp(lsm_md1->lsm_md_pool_name,
1317 lsm_md2->lsm_md_pool_name) == 0;
1320 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1322 struct ll_inode_info *lli = ll_i2info(inode);
1323 struct lmv_stripe_md *lsm = md->lmv;
1327 LASSERT(S_ISDIR(inode->i_mode));
1328 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1329 PFID(ll_inode2fid(inode)));
1331 /* no striped information from request. */
1333 if (lli->lli_lsm_md == NULL) {
1335 } else if (lli->lli_lsm_md->lsm_md_hash_type &
1336 LMV_HASH_FLAG_MIGRATION) {
1337 /* migration is done, the temporay MIGRATE layout has
1339 CDEBUG(D_INODE, DFID" finish migration.\n",
1340 PFID(ll_inode2fid(inode)));
1341 lmv_free_memmd(lli->lli_lsm_md);
1342 lli->lli_lsm_md = NULL;
1345 /* The lustre_md from req does not include stripeEA,
1346 * see ll_md_setattr */
1351 /* set the directory layout */
1352 if (lli->lli_lsm_md == NULL) {
1353 struct cl_attr *attr;
1355 rc = ll_init_lsm_md(inode, md);
1359 /* set md->lmv to NULL, so the following free lustre_md
1360 * will not free this lsm */
1362 lli->lli_lsm_md = lsm;
1364 OBD_ALLOC_PTR(attr);
1368 /* validate the lsm */
1369 rc = md_merge_attr(ll_i2mdexp(inode), lsm, attr,
1370 ll_md_blocking_ast);
1376 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1377 md->body->mbo_nlink = attr->cat_nlink;
1378 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1379 md->body->mbo_size = attr->cat_size;
1380 if (md->body->mbo_valid & OBD_MD_FLATIME)
1381 md->body->mbo_atime = attr->cat_atime;
1382 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1383 md->body->mbo_ctime = attr->cat_ctime;
1384 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1385 md->body->mbo_mtime = attr->cat_mtime;
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 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1451 LASSERT(!lli->lli_open_fd_write_count);
1452 LASSERT(!lli->lli_open_fd_read_count);
1453 LASSERT(!lli->lli_open_fd_exec_count);
1455 if (lli->lli_mds_write_och)
1456 ll_md_real_close(inode, FMODE_WRITE);
1457 if (lli->lli_mds_exec_och)
1458 ll_md_real_close(inode, FMODE_EXEC);
1459 if (lli->lli_mds_read_och)
1460 ll_md_real_close(inode, FMODE_READ);
1462 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1463 OBD_FREE(lli->lli_symlink_name,
1464 strlen(lli->lli_symlink_name) + 1);
1465 lli->lli_symlink_name = NULL;
1468 ll_xattr_cache_destroy(inode);
1470 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1471 LASSERT(lli->lli_posix_acl == NULL);
1472 if (lli->lli_remote_perms) {
1473 free_rmtperm_hash(lli->lli_remote_perms);
1474 lli->lli_remote_perms = NULL;
1477 #ifdef CONFIG_FS_POSIX_ACL
1478 else if (lli->lli_posix_acl) {
1479 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1480 LASSERT(lli->lli_remote_perms == NULL);
1481 posix_acl_release(lli->lli_posix_acl);
1482 lli->lli_posix_acl = NULL;
1485 lli->lli_inode_magic = LLI_INODE_DEAD;
1487 if (S_ISDIR(inode->i_mode))
1488 ll_dir_clear_lsm_md(inode);
1489 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1490 LASSERT(list_empty(&lli->lli_agl_list));
1493 * XXX This has to be done before lsm is freed below, because
1494 * cl_object still uses inode lsm.
1496 cl_inode_fini(inode);
1501 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1503 struct lustre_md md;
1504 struct inode *inode = dentry->d_inode;
1505 struct ll_sb_info *sbi = ll_i2sbi(inode);
1506 struct ptlrpc_request *request = NULL;
1510 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1511 LUSTRE_OPC_ANY, NULL);
1512 if (IS_ERR(op_data))
1513 RETURN(PTR_ERR(op_data));
1515 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1517 ptlrpc_req_finished(request);
1518 if (rc == -ENOENT) {
1520 /* Unlinked special device node? Or just a race?
1521 * Pretend we done everything. */
1522 if (!S_ISREG(inode->i_mode) &&
1523 !S_ISDIR(inode->i_mode)) {
1524 ia_valid = op_data->op_attr.ia_valid;
1525 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1526 rc = simple_setattr(dentry, &op_data->op_attr);
1527 op_data->op_attr.ia_valid = ia_valid;
1529 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1530 CERROR("md_setattr fails: rc = %d\n", rc);
1535 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1536 sbi->ll_md_exp, &md);
1538 ptlrpc_req_finished(request);
1542 ia_valid = op_data->op_attr.ia_valid;
1543 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1544 * cache is not cleared yet. */
1545 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1546 if (S_ISREG(inode->i_mode))
1547 mutex_lock(&inode->i_mutex);
1548 rc = simple_setattr(dentry, &op_data->op_attr);
1549 if (S_ISREG(inode->i_mode))
1550 mutex_unlock(&inode->i_mutex);
1551 op_data->op_attr.ia_valid = ia_valid;
1553 rc = ll_update_inode(inode, &md);
1554 ptlrpc_req_finished(request);
1559 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1560 * object(s) determine the file size and mtime. Otherwise, the MDS will
1561 * keep these values until such a time that objects are allocated for it.
1562 * We do the MDS operations first, as it is checking permissions for us.
1563 * We don't to the MDS RPC if there is nothing that we want to store there,
1564 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1565 * going to do an RPC anyways.
1567 * If we are doing a truncate, we will send the mtime and ctime updates
1568 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1569 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1572 * In case of HSMimport, we only set attr on MDS.
1574 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
1576 struct inode *inode = dentry->d_inode;
1577 struct ll_inode_info *lli = ll_i2info(inode);
1578 struct md_op_data *op_data = NULL;
1582 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1583 "valid %x, hsm_import %d\n",
1584 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1585 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1588 if (attr->ia_valid & ATTR_SIZE) {
1589 /* Check new size against VFS/VM file size limit and rlimit */
1590 rc = inode_newsize_ok(inode, attr->ia_size);
1594 /* The maximum Lustre file size is variable, based on the
1595 * OST maximum object size and number of stripes. This
1596 * needs another check in addition to the VFS check above. */
1597 if (attr->ia_size > ll_file_maxbytes(inode)) {
1598 CDEBUG(D_INODE,"file "DFID" too large %llu > "LPU64"\n",
1599 PFID(&lli->lli_fid), attr->ia_size,
1600 ll_file_maxbytes(inode));
1604 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1607 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1608 if (attr->ia_valid & TIMES_SET_FLAGS) {
1609 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1610 !cfs_capable(CFS_CAP_FOWNER))
1614 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1615 if (!(attr->ia_valid & ATTR_CTIME_SET) &&
1616 (attr->ia_valid & ATTR_CTIME)) {
1617 attr->ia_ctime = CURRENT_TIME;
1618 attr->ia_valid |= ATTR_CTIME_SET;
1620 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1621 (attr->ia_valid & ATTR_ATIME)) {
1622 attr->ia_atime = CURRENT_TIME;
1623 attr->ia_valid |= ATTR_ATIME_SET;
1625 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1626 (attr->ia_valid & ATTR_MTIME)) {
1627 attr->ia_mtime = CURRENT_TIME;
1628 attr->ia_valid |= ATTR_MTIME_SET;
1631 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1632 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1633 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1634 cfs_time_current_sec());
1636 if (S_ISREG(inode->i_mode)) {
1637 if (attr->ia_valid & ATTR_SIZE)
1638 inode_dio_write_done(inode);
1639 mutex_unlock(&inode->i_mutex);
1642 /* We always do an MDS RPC, even if we're only changing the size;
1643 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1645 OBD_ALLOC_PTR(op_data);
1646 if (op_data == NULL)
1647 GOTO(out, rc = -ENOMEM);
1649 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1650 /* If we are changing file size, file content is
1651 * modified, flag it. */
1652 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1653 op_data->op_bias |= MDS_DATA_MODIFIED;
1654 ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
1657 op_data->op_attr = *attr;
1659 rc = ll_md_setattr(dentry, op_data);
1663 if (!S_ISREG(inode->i_mode) || hsm_import)
1666 if (attr->ia_valid & (ATTR_SIZE |
1667 ATTR_ATIME | ATTR_ATIME_SET |
1668 ATTR_MTIME | ATTR_MTIME_SET |
1669 ATTR_CTIME | ATTR_CTIME_SET)) {
1670 /* For truncate and utimes sending attributes to OSTs, setting
1671 * mtime/atime to the past will be performed under PW [0:EOF]
1672 * extent lock (new_size:EOF for truncate). It may seem
1673 * excessive to send mtime/atime updates to OSTs when not
1674 * setting times to past, but it is necessary due to possible
1675 * time de-synchronization between MDT inode and OST objects */
1676 rc = cl_setattr_ost(lli->lli_clob, attr, 0);
1679 /* If the file was restored, it needs to set dirty flag.
1681 * We've already sent MDS_DATA_MODIFIED flag in
1682 * ll_md_setattr() for truncate. However, the MDT refuses to
1683 * set the HS_DIRTY flag on released files, so we have to set
1684 * it again if the file has been restored. Please check how
1685 * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
1687 * Please notice that if the file is not released, the previous
1688 * MDS_DATA_MODIFIED has taken effect and usually
1689 * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
1690 * This way we can save an RPC for common open + trunc
1692 if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
1693 struct hsm_state_set hss = {
1694 .hss_valid = HSS_SETMASK,
1695 .hss_setmask = HS_DIRTY,
1699 rc2 = ll_hsm_state_set(inode, &hss);
1700 /* truncate and write can happen at the same time, so that
1701 * the file can be set modified even though the file is not
1702 * restored from released state, and ll_hsm_state_set() is
1703 * not applicable for the file, and rc2 < 0 is normal in this
1706 CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
1707 PFID(ll_inode2fid(inode)), rc2);
1712 if (op_data != NULL)
1713 ll_finish_md_op_data(op_data);
1715 if (S_ISREG(inode->i_mode)) {
1716 mutex_lock(&inode->i_mutex);
1717 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1718 inode_dio_wait(inode);
1721 ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
1722 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1727 int ll_setattr(struct dentry *de, struct iattr *attr)
1729 int mode = de->d_inode->i_mode;
1731 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1732 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1733 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1735 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1736 (ATTR_SIZE|ATTR_MODE)) &&
1737 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1738 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1739 !(attr->ia_mode & S_ISGID))))
1740 attr->ia_valid |= ATTR_FORCE;
1742 if ((attr->ia_valid & ATTR_MODE) &&
1744 !(attr->ia_mode & S_ISUID) &&
1745 !(attr->ia_valid & ATTR_KILL_SUID))
1746 attr->ia_valid |= ATTR_KILL_SUID;
1748 if ((attr->ia_valid & ATTR_MODE) &&
1749 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1750 !(attr->ia_mode & S_ISGID) &&
1751 !(attr->ia_valid & ATTR_KILL_SGID))
1752 attr->ia_valid |= ATTR_KILL_SGID;
1754 return ll_setattr_raw(de, attr, false);
1757 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1758 __u64 max_age, __u32 flags)
1760 struct ll_sb_info *sbi = ll_s2sbi(sb);
1761 struct obd_statfs obd_osfs;
1765 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1767 CERROR("md_statfs fails: rc = %d\n", rc);
1771 osfs->os_type = sb->s_magic;
1773 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1774 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1776 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1777 flags |= OBD_STATFS_NODELAY;
1779 rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1781 CERROR("obd_statfs fails: rc = %d\n", rc);
1785 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1786 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1789 osfs->os_bsize = obd_osfs.os_bsize;
1790 osfs->os_blocks = obd_osfs.os_blocks;
1791 osfs->os_bfree = obd_osfs.os_bfree;
1792 osfs->os_bavail = obd_osfs.os_bavail;
1794 /* If we don't have as many objects free on the OST as inodes
1795 * on the MDS, we reduce the total number of inodes to
1796 * compensate, so that the "inodes in use" number is correct.
1798 if (obd_osfs.os_ffree < osfs->os_ffree) {
1799 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1801 osfs->os_ffree = obd_osfs.os_ffree;
1806 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1808 struct super_block *sb = de->d_sb;
1809 struct obd_statfs osfs;
1810 __u64 fsid = huge_encode_dev(sb->s_dev);
1813 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1814 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1816 /* Some amount of caching on the client is allowed */
1817 rc = ll_statfs_internal(sb, &osfs,
1818 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1823 statfs_unpack(sfs, &osfs);
1825 /* We need to downshift for all 32-bit kernels, because we can't
1826 * tell if the kernel is being called via sys_statfs64() or not.
1827 * Stop before overflowing f_bsize - in which case it is better
1828 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1829 if (sizeof(long) < 8) {
1830 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1833 osfs.os_blocks >>= 1;
1834 osfs.os_bfree >>= 1;
1835 osfs.os_bavail >>= 1;
1839 sfs->f_blocks = osfs.os_blocks;
1840 sfs->f_bfree = osfs.os_bfree;
1841 sfs->f_bavail = osfs.os_bavail;
1842 sfs->f_fsid.val[0] = (__u32)fsid;
1843 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
1847 void ll_inode_size_lock(struct inode *inode)
1849 struct ll_inode_info *lli;
1851 LASSERT(!S_ISDIR(inode->i_mode));
1853 lli = ll_i2info(inode);
1854 mutex_lock(&lli->lli_size_mutex);
1857 void ll_inode_size_unlock(struct inode *inode)
1859 struct ll_inode_info *lli;
1861 lli = ll_i2info(inode);
1862 mutex_unlock(&lli->lli_size_mutex);
1865 int ll_update_inode(struct inode *inode, struct lustre_md *md)
1867 struct ll_inode_info *lli = ll_i2info(inode);
1868 struct mdt_body *body = md->body;
1869 struct ll_sb_info *sbi = ll_i2sbi(inode);
1871 if (body->mbo_valid & OBD_MD_FLEASIZE)
1872 cl_file_inode_init(inode, md);
1874 if (S_ISDIR(inode->i_mode)) {
1877 rc = ll_update_lsm_md(inode, md);
1882 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1883 if (body->mbo_valid & OBD_MD_FLRMTPERM)
1884 ll_update_remote_perm(inode, md->remote_perm);
1886 #ifdef CONFIG_FS_POSIX_ACL
1887 else if (body->mbo_valid & OBD_MD_FLACL) {
1888 spin_lock(&lli->lli_lock);
1889 if (lli->lli_posix_acl)
1890 posix_acl_release(lli->lli_posix_acl);
1891 lli->lli_posix_acl = md->posix_acl;
1892 spin_unlock(&lli->lli_lock);
1895 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
1896 sbi->ll_flags & LL_SBI_32BIT_API);
1897 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
1899 if (body->mbo_valid & OBD_MD_FLATIME) {
1900 if (body->mbo_atime > LTIME_S(inode->i_atime))
1901 LTIME_S(inode->i_atime) = body->mbo_atime;
1902 lli->lli_atime = body->mbo_atime;
1905 if (body->mbo_valid & OBD_MD_FLMTIME) {
1906 if (body->mbo_mtime > LTIME_S(inode->i_mtime)) {
1907 CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1908 "to "LPU64"\n", inode->i_ino,
1909 LTIME_S(inode->i_mtime), body->mbo_mtime);
1910 LTIME_S(inode->i_mtime) = body->mbo_mtime;
1912 lli->lli_mtime = body->mbo_mtime;
1915 if (body->mbo_valid & OBD_MD_FLCTIME) {
1916 if (body->mbo_ctime > LTIME_S(inode->i_ctime))
1917 LTIME_S(inode->i_ctime) = body->mbo_ctime;
1918 lli->lli_ctime = body->mbo_ctime;
1921 if (body->mbo_valid & OBD_MD_FLMODE)
1922 inode->i_mode = (inode->i_mode & S_IFMT) |
1923 (body->mbo_mode & ~S_IFMT);
1925 if (body->mbo_valid & OBD_MD_FLTYPE)
1926 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1927 (body->mbo_mode & S_IFMT);
1929 LASSERT(inode->i_mode != 0);
1930 if (S_ISREG(inode->i_mode))
1931 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
1932 LL_MAX_BLKSIZE_BITS);
1934 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1936 if (body->mbo_valid & OBD_MD_FLUID)
1937 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
1938 if (body->mbo_valid & OBD_MD_FLGID)
1939 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
1940 if (body->mbo_valid & OBD_MD_FLFLAGS)
1941 inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
1942 if (body->mbo_valid & OBD_MD_FLNLINK)
1943 set_nlink(inode, body->mbo_nlink);
1944 if (body->mbo_valid & OBD_MD_FLRDEV)
1945 inode->i_rdev = old_decode_dev(body->mbo_rdev);
1947 if (body->mbo_valid & OBD_MD_FLID) {
1948 /* FID shouldn't be changed! */
1949 if (fid_is_sane(&lli->lli_fid)) {
1950 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
1951 "Trying to change FID "DFID
1952 " to the "DFID", inode "DFID"(%p)\n",
1953 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
1954 PFID(ll_inode2fid(inode)), inode);
1956 lli->lli_fid = body->mbo_fid1;
1960 LASSERT(fid_seq(&lli->lli_fid) != 0);
1962 if (body->mbo_valid & OBD_MD_FLSIZE) {
1963 i_size_write(inode, body->mbo_size);
1965 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
1966 PFID(ll_inode2fid(inode)),
1967 (unsigned long long)body->mbo_size);
1969 if (body->mbo_valid & OBD_MD_FLBLOCKS)
1970 inode->i_blocks = body->mbo_blocks;
1973 if (body->mbo_valid & OBD_MD_TSTATE) {
1974 /* Set LLIF_FILE_RESTORING if restore ongoing and
1975 * clear it when done to ensure to start again
1976 * glimpsing updated attrs
1978 if (body->mbo_t_state & MS_RESTORE)
1979 ll_file_set_flag(lli, LLIF_FILE_RESTORING);
1981 ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
1987 int ll_read_inode2(struct inode *inode, void *opaque)
1989 struct lustre_md *md = opaque;
1990 struct ll_inode_info *lli = ll_i2info(inode);
1994 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1995 PFID(&lli->lli_fid), inode);
1997 /* Core attributes from the MDS first. This is a new inode, and
1998 * the VFS doesn't zero times in the core inode so we have to do
1999 * it ourselves. They will be overwritten by either MDS or OST
2000 * attributes - we just need to make sure they aren't newer. */
2001 LTIME_S(inode->i_mtime) = 0;
2002 LTIME_S(inode->i_atime) = 0;
2003 LTIME_S(inode->i_ctime) = 0;
2005 rc = ll_update_inode(inode, md);
2009 /* OIDEBUG(inode); */
2011 #ifdef HAVE_BACKING_DEV_INFO
2012 /* initializing backing dev info. */
2013 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2015 if (S_ISREG(inode->i_mode)) {
2016 struct ll_sb_info *sbi = ll_i2sbi(inode);
2017 inode->i_op = &ll_file_inode_operations;
2018 inode->i_fop = sbi->ll_fop;
2019 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2021 } else if (S_ISDIR(inode->i_mode)) {
2022 inode->i_op = &ll_dir_inode_operations;
2023 inode->i_fop = &ll_dir_operations;
2025 } else if (S_ISLNK(inode->i_mode)) {
2026 inode->i_op = &ll_fast_symlink_inode_operations;
2029 inode->i_op = &ll_special_inode_operations;
2031 init_special_inode(inode, inode->i_mode,
2040 void ll_delete_inode(struct inode *inode)
2042 struct ll_inode_info *lli = ll_i2info(inode);
2045 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
2046 /* It is last chance to write out dirty pages,
2047 * otherwise we may lose data while umount */
2048 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
2050 truncate_inode_pages_final(&inode->i_data);
2052 LASSERTF(inode->i_data.nrpages == 0, "inode="DFID"(%p) nrpages=%lu, "
2053 "see https://jira.hpdd.intel.com/browse/LU-118\n",
2054 PFID(ll_inode2fid(inode)), inode, inode->i_data.nrpages);
2056 #ifdef HAVE_SBOPS_EVICT_INODE
2057 ll_clear_inode(inode);
2064 int ll_iocontrol(struct inode *inode, struct file *file,
2065 unsigned int cmd, unsigned long arg)
2067 struct ll_sb_info *sbi = ll_i2sbi(inode);
2068 struct ptlrpc_request *req = NULL;
2073 case FSFILT_IOC_GETFLAGS: {
2074 struct mdt_body *body;
2075 struct md_op_data *op_data;
2077 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2078 0, 0, LUSTRE_OPC_ANY,
2080 if (IS_ERR(op_data))
2081 RETURN(PTR_ERR(op_data));
2083 op_data->op_valid = OBD_MD_FLFLAGS;
2084 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2085 ll_finish_md_op_data(op_data);
2087 CERROR("%s: failure inode "DFID": rc = %d\n",
2088 sbi->ll_md_exp->exp_obd->obd_name,
2089 PFID(ll_inode2fid(inode)), rc);
2093 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2095 flags = body->mbo_flags;
2097 ptlrpc_req_finished(req);
2099 RETURN(put_user(flags, (int __user *)arg));
2101 case FSFILT_IOC_SETFLAGS: {
2103 struct md_op_data *op_data;
2104 struct cl_object *obj;
2106 if (get_user(flags, (int __user *)arg))
2109 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2110 LUSTRE_OPC_ANY, NULL);
2111 if (IS_ERR(op_data))
2112 RETURN(PTR_ERR(op_data));
2114 op_data->op_attr_flags = flags;
2115 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
2116 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2117 ll_finish_md_op_data(op_data);
2118 ptlrpc_req_finished(req);
2122 inode->i_flags = ll_ext_to_inode_flags(flags);
2124 obj = ll_i2info(inode)->lli_clob;
2128 OBD_ALLOC_PTR(attr);
2132 attr->ia_valid = ATTR_ATTR_FLAG;
2133 rc = cl_setattr_ost(obj, attr, flags);
2145 int ll_flush_ctx(struct inode *inode)
2147 struct ll_sb_info *sbi = ll_i2sbi(inode);
2149 CDEBUG(D_SEC, "flush context for user %d\n",
2150 from_kuid(&init_user_ns, current_uid()));
2152 obd_set_info_async(NULL, sbi->ll_md_exp,
2153 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2155 obd_set_info_async(NULL, sbi->ll_dt_exp,
2156 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2161 /* umount -f client means force down, don't save state */
2162 void ll_umount_begin(struct super_block *sb)
2164 struct ll_sb_info *sbi = ll_s2sbi(sb);
2165 struct obd_device *obd;
2166 struct obd_ioctl_data *ioc_data;
2169 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2170 sb->s_count, atomic_read(&sb->s_active));
2172 obd = class_exp2obd(sbi->ll_md_exp);
2174 CERROR("Invalid MDC connection handle "LPX64"\n",
2175 sbi->ll_md_exp->exp_handle.h_cookie);
2181 obd = class_exp2obd(sbi->ll_dt_exp);
2183 CERROR("Invalid LOV connection handle "LPX64"\n",
2184 sbi->ll_dt_exp->exp_handle.h_cookie);
2190 OBD_ALLOC_PTR(ioc_data);
2192 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2193 sizeof *ioc_data, ioc_data, NULL);
2195 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2196 sizeof *ioc_data, ioc_data, NULL);
2198 OBD_FREE_PTR(ioc_data);
2201 /* Really, we'd like to wait until there are no requests outstanding,
2202 * and then continue. For now, we just invalidate the requests,
2203 * schedule() and sleep one second if needed, and hope.
2209 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2211 struct ll_sb_info *sbi = ll_s2sbi(sb);
2212 char *profilenm = get_profile_name(sb);
2216 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2217 read_only = *flags & MS_RDONLY;
2218 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2219 sizeof(KEY_READ_ONLY),
2220 KEY_READ_ONLY, sizeof(read_only),
2223 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2224 profilenm, read_only ?
2225 "read-only" : "read-write", err);
2230 sb->s_flags |= MS_RDONLY;
2232 sb->s_flags &= ~MS_RDONLY;
2234 if (sbi->ll_flags & LL_SBI_VERBOSE)
2235 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2236 read_only ? "read-only" : "read-write");
2242 * Cleanup the open handle that is cached on MDT-side.
2244 * For open case, the client side open handling thread may hit error
2245 * after the MDT grant the open. Under such case, the client should
2246 * send close RPC to the MDT as cleanup; otherwise, the open handle
2247 * on the MDT will be leaked there until the client umount or evicted.
2249 * In further, if someone unlinked the file, because the open handle
2250 * holds the reference on such file/object, then it will block the
2251 * subsequent threads that want to locate such object via FID.
2253 * \param[in] sb super block for this file-system
2254 * \param[in] open_req pointer to the original open request
2256 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
2258 struct mdt_body *body;
2259 struct md_op_data *op_data;
2260 struct ptlrpc_request *close_req = NULL;
2261 struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
2264 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
2265 OBD_ALLOC_PTR(op_data);
2266 if (op_data == NULL) {
2267 CWARN("%s: cannot allocate op_data to release open handle for "
2269 ll_get_fsname(sb, NULL, 0), PFID(&body->mbo_fid1));
2274 op_data->op_fid1 = body->mbo_fid1;
2275 op_data->op_handle = body->mbo_handle;
2276 op_data->op_mod_time = cfs_time_current_sec();
2277 md_close(exp, op_data, NULL, &close_req);
2278 ptlrpc_req_finished(close_req);
2279 ll_finish_md_op_data(op_data);
2284 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2285 struct super_block *sb, struct lookup_intent *it)
2287 struct ll_sb_info *sbi = NULL;
2288 struct lustre_md md = { NULL };
2292 LASSERT(*inode || sb);
2293 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2294 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2295 sbi->ll_md_exp, &md);
2300 rc = ll_update_inode(*inode, &md);
2304 LASSERT(sb != NULL);
2307 * At this point server returns to client's same fid as client
2308 * generated for creating. So using ->fid1 is okay here.
2310 LASSERT(fid_is_sane(&md.body->mbo_fid1));
2312 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2313 sbi->ll_flags & LL_SBI_32BIT_API),
2315 if (IS_ERR(*inode)) {
2316 #ifdef CONFIG_FS_POSIX_ACL
2318 posix_acl_release(md.posix_acl);
2319 md.posix_acl = NULL;
2322 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2324 CERROR("new_inode -fatal: rc %d\n", rc);
2329 /* Handling piggyback layout lock.
2330 * Layout lock can be piggybacked by getattr and open request.
2331 * The lsm can be applied to inode only if it comes with a layout lock
2332 * otherwise correct layout may be overwritten, for example:
2333 * 1. proc1: mdt returns a lsm but not granting layout
2334 * 2. layout was changed by another client
2335 * 3. proc2: refresh layout and layout lock granted
2336 * 4. proc1: to apply a stale layout */
2337 if (it != NULL && it->it_lock_mode != 0) {
2338 struct lustre_handle lockh;
2339 struct ldlm_lock *lock;
2341 lockh.cookie = it->it_lock_handle;
2342 lock = ldlm_handle2lock(&lockh);
2343 LASSERT(lock != NULL);
2344 if (ldlm_has_layout(lock)) {
2345 struct cl_object_conf conf;
2347 memset(&conf, 0, sizeof(conf));
2348 conf.coc_opc = OBJECT_CONF_SET;
2349 conf.coc_inode = *inode;
2350 conf.coc_lock = lock;
2351 conf.u.coc_layout = md.layout;
2352 (void)ll_layout_conf(*inode, &conf);
2354 LDLM_LOCK_PUT(lock);
2360 md_free_lustre_md(sbi->ll_md_exp, &md);
2363 if (rc != 0 && it != NULL && it->it_op & IT_OPEN)
2364 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2369 int ll_obd_statfs(struct inode *inode, void __user *arg)
2371 struct ll_sb_info *sbi = NULL;
2372 struct obd_export *exp;
2374 struct obd_ioctl_data *data = NULL;
2378 if (!inode || !(sbi = ll_i2sbi(inode)))
2379 GOTO(out_statfs, rc = -EINVAL);
2381 rc = obd_ioctl_getdata(&buf, &len, arg);
2383 GOTO(out_statfs, rc);
2386 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2387 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2388 GOTO(out_statfs, rc = -EINVAL);
2390 if (data->ioc_inllen1 != sizeof(__u32) ||
2391 data->ioc_inllen2 != sizeof(__u32) ||
2392 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2393 data->ioc_plen2 != sizeof(struct obd_uuid))
2394 GOTO(out_statfs, rc = -EINVAL);
2396 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2397 if (type & LL_STATFS_LMV)
2398 exp = sbi->ll_md_exp;
2399 else if (type & LL_STATFS_LOV)
2400 exp = sbi->ll_dt_exp;
2402 GOTO(out_statfs, rc = -ENODEV);
2404 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2406 GOTO(out_statfs, rc);
2409 obd_ioctl_freedata(buf, len);
2413 int ll_process_config(struct lustre_cfg *lcfg)
2415 struct super_block *sb;
2420 /* The instance name contains the sb: lustre-client-aacfe000 */
2421 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2422 if (!ptr || !*(++ptr))
2424 if (sscanf(ptr, "%lx", &x) != 1)
2426 sb = (struct super_block *)x;
2427 /* This better be a real Lustre superblock! */
2428 LASSERT(s2lsi(sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2430 /* Note we have not called client_common_fill_super yet, so
2431 proc fns must be able to handle that! */
2432 rc = class_process_proc_param(PARAM_LLITE, lprocfs_llite_obd_vars,
2439 /* this function prepares md_op_data hint for passing it down to MD stack. */
2440 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
2441 struct inode *i1, struct inode *i2,
2442 const char *name, size_t namelen,
2443 __u32 mode, __u32 opc, void *data)
2445 LASSERT(i1 != NULL);
2448 /* Do not reuse namelen for something else. */
2450 return ERR_PTR(-EINVAL);
2452 if (namelen > ll_i2sbi(i1)->ll_namelen)
2453 return ERR_PTR(-ENAMETOOLONG);
2455 if (!lu_name_is_valid_2(name, namelen))
2456 return ERR_PTR(-EINVAL);
2459 if (op_data == NULL)
2460 OBD_ALLOC_PTR(op_data);
2462 if (op_data == NULL)
2463 return ERR_PTR(-ENOMEM);
2465 ll_i2gids(op_data->op_suppgids, i1, i2);
2466 op_data->op_fid1 = *ll_inode2fid(i1);
2467 op_data->op_default_stripe_offset = -1;
2468 if (S_ISDIR(i1->i_mode)) {
2469 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2470 if (opc == LUSTRE_OPC_MKDIR)
2471 op_data->op_default_stripe_offset =
2472 ll_i2info(i1)->lli_def_stripe_offset;
2476 op_data->op_fid2 = *ll_inode2fid(i2);
2477 if (S_ISDIR(i2->i_mode))
2478 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2480 fid_zero(&op_data->op_fid2);
2483 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2484 op_data->op_cli_flags |= CLI_HASH64;
2486 if (ll_need_32bit_api(ll_i2sbi(i1)))
2487 op_data->op_cli_flags |= CLI_API32;
2489 op_data->op_name = name;
2490 op_data->op_namelen = namelen;
2491 op_data->op_mode = mode;
2492 op_data->op_mod_time = cfs_time_current_sec();
2493 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2494 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2495 op_data->op_cap = cfs_curproc_cap_pack();
2496 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2497 filename_is_volatile(name, namelen, &op_data->op_mds)) {
2498 op_data->op_bias |= MDS_CREATE_VOLATILE;
2500 op_data->op_mds = 0;
2502 op_data->op_data = data;
2507 void ll_finish_md_op_data(struct md_op_data *op_data)
2509 OBD_FREE_PTR(op_data);
2512 #ifdef HAVE_SUPEROPS_USE_DENTRY
2513 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2515 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2518 struct ll_sb_info *sbi;
2520 #ifdef HAVE_SUPEROPS_USE_DENTRY
2521 LASSERT((seq != NULL) && (dentry != NULL));
2522 sbi = ll_s2sbi(dentry->d_sb);
2524 LASSERT((seq != NULL) && (vfs != NULL));
2525 sbi = ll_s2sbi(vfs->mnt_sb);
2528 if (sbi->ll_flags & LL_SBI_NOLCK)
2529 seq_puts(seq, ",nolock");
2531 if (sbi->ll_flags & LL_SBI_FLOCK)
2532 seq_puts(seq, ",flock");
2534 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2535 seq_puts(seq, ",localflock");
2537 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2538 seq_puts(seq, ",user_xattr");
2540 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2541 seq_puts(seq, ",lazystatfs");
2543 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2544 seq_puts(seq, ",user_fid2path");
2546 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
2547 seq_puts(seq, ",always_ping");
2553 * Get obd name by cmd, and copy out to user space
2555 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2557 struct ll_sb_info *sbi = ll_i2sbi(inode);
2558 struct obd_device *obd;
2561 if (cmd == OBD_IOC_GETDTNAME)
2562 obd = class_exp2obd(sbi->ll_dt_exp);
2563 else if (cmd == OBD_IOC_GETMDNAME)
2564 obd = class_exp2obd(sbi->ll_md_exp);
2571 if (copy_to_user((void __user *)arg, obd->obd_name,
2572 strlen(obd->obd_name) + 1))
2579 * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
2580 * fsname will be returned in this buffer; otherwise, a static buffer will be
2581 * used to store the fsname and returned to caller.
2583 char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
2585 static char fsname_static[MTI_NAME_MAXLEN];
2586 struct lustre_sb_info *lsi = s2lsi(sb);
2591 /* this means the caller wants to use static buffer
2592 * and it doesn't care about race. Usually this is
2593 * in error reporting path */
2594 buf = fsname_static;
2595 buflen = sizeof(fsname_static);
2598 len = strlen(lsi->lsi_lmd->lmd_profile);
2599 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
2600 if (ptr && (strcmp(ptr, "-client") == 0))
2603 if (unlikely(len >= buflen))
2605 strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
2611 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2618 p.mnt = current->fs->root.mnt;
2620 path = d_path(&p, buf, bufsize);
2625 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2627 char *buf, *path = NULL;
2628 struct dentry *dentry = NULL;
2629 struct inode *inode = page->mapping->host;
2631 /* this can be called inside spin lock so use GFP_ATOMIC. */
2632 buf = (char *)__get_free_page(GFP_ATOMIC);
2634 dentry = d_find_alias(page->mapping->host);
2636 path = ll_d_path(dentry, buf, PAGE_SIZE);
2640 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2641 "(rc %d)\n", ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
2642 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2643 PFID(ll_inode2fid(inode)),
2644 (path && !IS_ERR(path)) ? path : "", ioret);
2650 free_page((unsigned long)buf);
2653 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
2654 struct lov_user_md **kbuf)
2656 struct lov_user_md lum;
2660 if (copy_from_user(&lum, md, sizeof(lum)))
2663 lum_size = ll_lov_user_md_size(&lum);
2667 OBD_ALLOC(*kbuf, lum_size);
2671 if (copy_from_user(*kbuf, md, lum_size) != 0) {
2672 OBD_FREE(*kbuf, lum_size);
2680 * Compute llite root squash state after a change of root squash
2681 * configuration setting or add/remove of a lnet nid
2683 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2685 struct root_squash_info *squash = &sbi->ll_squash;
2688 lnet_process_id_t id;
2690 /* Update norootsquash flag */
2691 down_write(&squash->rsi_sem);
2692 if (list_empty(&squash->rsi_nosquash_nids))
2693 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2695 /* Do not apply root squash as soon as one of our NIDs is
2696 * in the nosquash_nids list */
2699 while (LNetGetId(i++, &id) != -ENOENT) {
2700 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2702 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2708 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2710 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2712 up_write(&squash->rsi_sem);
2716 * Parse linkea content to extract information about a given hardlink
2718 * \param[in] ldata - Initialized linkea data
2719 * \param[in] linkno - Link identifier
2720 * \param[out] parent_fid - The entry's parent FID
2721 * \param[out] ln - Entry name destination buffer
2723 * \retval 0 on success
2724 * \retval Appropriate negative error code on failure
2726 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
2727 struct lu_fid *parent_fid, struct lu_name *ln)
2733 rc = linkea_init(ldata);
2737 if (linkno >= ldata->ld_leh->leh_reccount)
2738 /* beyond last link */
2741 linkea_first_entry(ldata);
2742 for (idx = 0; ldata->ld_lee != NULL; idx++) {
2743 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
2748 linkea_next_entry(ldata);
2758 * Get parent FID and name of an identified link. Operation is performed for
2759 * a given link number, letting the caller iterate over linkno to list one or
2760 * all links of an entry.
2762 * \param[in] file - File descriptor against which to perform the operation
2763 * \param[in,out] arg - User-filled structure containing the linkno to operate
2764 * on and the available size. It is eventually filled with
2765 * the requested information or left untouched on error
2767 * \retval - 0 on success
2768 * \retval - Appropriate negative error code on failure
2770 int ll_getparent(struct file *file, struct getparent __user *arg)
2772 struct dentry *dentry = file->f_path.dentry;
2773 struct inode *inode = dentry->d_inode;
2774 struct linkea_data *ldata;
2775 struct lu_buf buf = LU_BUF_NULL;
2777 struct lu_fid parent_fid;
2784 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
2785 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
2788 if (get_user(name_size, &arg->gp_name_size))
2791 if (get_user(linkno, &arg->gp_linkno))
2794 if (name_size > PATH_MAX)
2797 OBD_ALLOC(ldata, sizeof(*ldata));
2801 rc = linkea_data_new(ldata, &buf);
2803 GOTO(ldata_free, rc);
2805 rc = ll_getxattr(dentry, XATTR_NAME_LINK, buf.lb_buf, buf.lb_len);
2809 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
2813 if (ln.ln_namelen >= name_size)
2814 GOTO(lb_free, rc = -EOVERFLOW);
2816 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
2817 GOTO(lb_free, rc = -EFAULT);
2819 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
2820 GOTO(lb_free, rc = -EFAULT);
2822 if (put_user('\0', arg->gp_name + ln.ln_namelen))
2823 GOTO(lb_free, rc = -EFAULT);
2828 OBD_FREE(ldata, sizeof(*ldata));