4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2014, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/llite/llite_lib.c
38 * Lustre Light Super operations
41 #define DEBUG_SUBSYSTEM S_LLITE
43 #include <linux/module.h>
44 #include <linux/statfs.h>
45 #include <linux/types.h>
46 #include <linux/version.h>
49 #include <lustre_ioctl.h>
50 #include <lustre_ha.h>
51 #include <lustre_dlm.h>
52 #include <lprocfs_status.h>
53 #include <lustre_disk.h>
54 #include <lustre_param.h>
55 #include <lustre_log.h>
56 #include <cl_object.h>
57 #include <obd_cksum.h>
58 #include "llite_internal.h"
60 struct kmem_cache *ll_file_data_slab;
62 static struct list_head ll_super_blocks = LIST_HEAD_INIT(ll_super_blocks);
63 static DEFINE_SPINLOCK(ll_sb_lock);
66 #define log2(n) ffz(~(n))
69 static struct ll_sb_info *ll_init_sbi(void)
71 struct ll_sb_info *sbi = NULL;
73 unsigned long lru_page_max;
83 spin_lock_init(&sbi->ll_lock);
84 mutex_init(&sbi->ll_lco.lco_lock);
85 spin_lock_init(&sbi->ll_pp_extent_lock);
86 spin_lock_init(&sbi->ll_process_lock);
87 sbi->ll_rw_stats_on = 0;
90 pages = si.totalram - si.totalhigh;
91 lru_page_max = pages / 2;
93 /* initialize ll_cache data */
94 atomic_set(&sbi->ll_cache.ccc_users, 0);
95 sbi->ll_cache.ccc_lru_max = lru_page_max;
96 atomic_long_set(&sbi->ll_cache.ccc_lru_left, lru_page_max);
97 spin_lock_init(&sbi->ll_cache.ccc_lru_lock);
98 INIT_LIST_HEAD(&sbi->ll_cache.ccc_lru);
100 /* turn unstable check off by default as it impacts performance */
101 sbi->ll_cache.ccc_unstable_check = 0;
102 atomic_long_set(&sbi->ll_cache.ccc_unstable_nr, 0);
103 init_waitqueue_head(&sbi->ll_cache.ccc_unstable_waitq);
105 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
106 SBI_DEFAULT_READAHEAD_MAX);
107 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
108 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
109 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
110 INIT_LIST_HEAD(&sbi->ll_conn_chain);
111 INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
113 ll_generate_random_uuid(uuid);
114 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
115 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
117 spin_lock(&ll_sb_lock);
118 list_add_tail(&sbi->ll_list, &ll_super_blocks);
119 spin_unlock(&ll_sb_lock);
121 sbi->ll_flags |= LL_SBI_VERBOSE;
122 #ifdef ENABLE_CHECKSUM
123 sbi->ll_flags |= LL_SBI_CHECKSUM;
126 #ifdef HAVE_LRU_RESIZE_SUPPORT
127 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
130 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
131 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
133 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
137 /* metadata statahead is enabled by default */
138 sbi->ll_sa_max = LL_SA_RPC_DEF;
139 atomic_set(&sbi->ll_sa_total, 0);
140 atomic_set(&sbi->ll_sa_wrong, 0);
141 atomic_set(&sbi->ll_sa_running, 0);
142 atomic_set(&sbi->ll_agl_total, 0);
143 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
146 sbi->ll_squash.rsi_uid = 0;
147 sbi->ll_squash.rsi_gid = 0;
148 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
149 init_rwsem(&sbi->ll_squash.rsi_sem);
154 static void ll_free_sbi(struct super_block *sb)
156 struct ll_sb_info *sbi = ll_s2sbi(sb);
160 spin_lock(&ll_sb_lock);
161 list_del(&sbi->ll_list);
162 spin_unlock(&ll_sb_lock);
163 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
164 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
165 OBD_FREE(sbi, sizeof(*sbi));
170 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
171 struct vfsmount *mnt)
173 struct inode *root = NULL;
174 struct ll_sb_info *sbi = ll_s2sbi(sb);
175 struct obd_device *obd;
176 struct obd_capa *oc = NULL;
177 struct obd_statfs *osfs = NULL;
178 struct ptlrpc_request *request = NULL;
179 struct obd_connect_data *data = NULL;
180 struct obd_uuid *uuid;
181 struct md_op_data *op_data;
182 struct lustre_md lmd;
184 int size, err, checksum;
187 obd = class_name2obd(md);
189 CERROR("MD %s: not setup or attached\n", md);
203 /* indicate the features supported by this client */
204 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
205 OBD_CONNECT_ATTRFID |
206 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
207 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
208 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
209 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
210 OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR |
211 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH|
212 OBD_CONNECT_EINPROGRESS |
213 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
214 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS |
215 OBD_CONNECT_MAX_EASIZE |
216 OBD_CONNECT_FLOCK_DEAD |
217 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
218 OBD_CONNECT_OPEN_BY_FID |
219 OBD_CONNECT_DIR_STRIPE;
221 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
222 data->ocd_connect_flags |= OBD_CONNECT_SOM;
224 #ifdef HAVE_LRU_RESIZE_SUPPORT
225 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
226 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
228 #ifdef CONFIG_FS_POSIX_ACL
229 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
232 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
233 /* flag mdc connection as lightweight, only used for test
234 * purpose, use with care */
235 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
237 data->ocd_ibits_known = MDS_INODELOCK_FULL;
238 data->ocd_version = LUSTRE_VERSION_CODE;
240 if (sb->s_flags & MS_RDONLY)
241 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
242 if (sbi->ll_flags & LL_SBI_USER_XATTR)
243 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
245 #ifdef HAVE_MS_FLOCK_LOCK
246 /* force vfs to use lustre handler for flock() calls - bug 10743 */
247 sb->s_flags |= MS_FLOCK_LOCK;
249 #ifdef MS_HAS_NEW_AOPS
250 sb->s_flags |= MS_HAS_NEW_AOPS;
253 if (sbi->ll_flags & LL_SBI_FLOCK)
254 sbi->ll_fop = &ll_file_operations_flock;
255 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
256 sbi->ll_fop = &ll_file_operations;
258 sbi->ll_fop = &ll_file_operations_noflock;
261 data->ocd_connect_flags |= OBD_CONNECT_REAL;
262 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
263 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
265 data->ocd_brw_size = MD_MAX_BRW_SIZE;
267 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
269 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
270 "recovery, of which this client is not a "
271 "part. Please wait for recovery to complete,"
272 " abort, or time out.\n", md);
275 CERROR("cannot connect to %s: rc = %d\n", md, err);
279 sbi->ll_md_exp->exp_connect_data = *data;
281 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
282 LUSTRE_SEQ_METADATA);
284 CERROR("%s: Can't init metadata layer FID infrastructure, "
285 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
289 /* For mount, we only need fs info from MDT0, and also in DNE, it
290 * can make sure the client can be mounted as long as MDT0 is
292 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
293 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
294 OBD_STATFS_FOR_MDT0);
296 GOTO(out_md_fid, err);
298 /* This needs to be after statfs to ensure connect has finished.
299 * Note that "data" does NOT contain the valid connect reply.
300 * If connecting to a 1.8 server there will be no LMV device, so
301 * we can access the MDC export directly and exp_connect_flags will
302 * be non-zero, but if accessing an upgraded 2.1 server it will
303 * have the correct flags filled in.
304 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
305 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
306 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
307 valid != CLIENT_CONNECT_MDT_REQD) {
310 OBD_ALLOC_WAIT(buf, PAGE_CACHE_SIZE);
311 obd_connect_flags2str(buf, PAGE_CACHE_SIZE,
312 valid ^ CLIENT_CONNECT_MDT_REQD, ",");
313 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
314 "feature(s) needed for correct operation "
315 "of this client (%s). Please upgrade "
316 "server or downgrade client.\n",
317 sbi->ll_md_exp->exp_obd->obd_name, buf);
318 OBD_FREE(buf, PAGE_CACHE_SIZE);
319 GOTO(out_md_fid, err = -EPROTO);
322 size = sizeof(*data);
323 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
324 KEY_CONN_DATA, &size, data, NULL);
326 CERROR("%s: Get connect data failed: rc = %d\n",
327 sbi->ll_md_exp->exp_obd->obd_name, err);
328 GOTO(out_md_fid, err);
331 LASSERT(osfs->os_bsize);
332 sb->s_blocksize = osfs->os_bsize;
333 sb->s_blocksize_bits = log2(osfs->os_bsize);
334 sb->s_magic = LL_SUPER_MAGIC;
335 sb->s_maxbytes = MAX_LFS_FILESIZE;
336 sbi->ll_namelen = osfs->os_namelen;
337 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
339 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
340 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
341 LCONSOLE_INFO("Disabling user_xattr feature because "
342 "it is not supported on the server\n");
343 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
346 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
348 sb->s_flags |= MS_POSIXACL;
350 sbi->ll_flags |= LL_SBI_ACL;
352 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
354 sb->s_flags &= ~MS_POSIXACL;
356 sbi->ll_flags &= ~LL_SBI_ACL;
359 if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
360 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
361 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
362 LCONSOLE_INFO("client is set as remote by default.\n");
365 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
366 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
367 LCONSOLE_INFO("client claims to be remote, but server "
368 "rejected, forced to be local.\n");
372 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
373 LCONSOLE_INFO("client enabled MDS capability!\n");
374 sbi->ll_flags |= LL_SBI_MDS_CAPA;
377 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
378 LCONSOLE_INFO("client enabled OSS capability!\n");
379 sbi->ll_flags |= LL_SBI_OSS_CAPA;
382 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
383 sbi->ll_flags |= LL_SBI_64BIT_HASH;
385 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
386 sbi->ll_md_brw_pages = data->ocd_brw_size >> PAGE_CACHE_SHIFT;
388 sbi->ll_md_brw_pages = 1;
390 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
391 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
393 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
394 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
395 LCONSOLE_INFO("%s: disabling xattr cache due to "
396 "unknown maximum xattr size.\n", dt);
398 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
399 sbi->ll_xattr_cache_enabled = 1;
403 obd = class_name2obd(dt);
405 CERROR("DT %s: not setup or attached\n", dt);
406 GOTO(out_md_fid, err = -ENODEV);
409 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
410 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
411 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
412 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
413 OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
414 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
415 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
416 OBD_CONNECT_MAXBYTES |
417 OBD_CONNECT_EINPROGRESS |
418 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
419 OBD_CONNECT_LAYOUTLOCK |
420 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK;
422 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
423 data->ocd_connect_flags |= OBD_CONNECT_SOM;
425 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
426 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
427 * disabled by default, because it can still be enabled on the
428 * fly via /proc. As a consequence, we still need to come to an
429 * agreement on the supported algorithms at connect time */
430 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
432 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
433 data->ocd_cksum_types = OBD_CKSUM_ADLER;
435 data->ocd_cksum_types = cksum_types_supported_client();
438 #ifdef HAVE_LRU_RESIZE_SUPPORT
439 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
441 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
442 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
444 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
445 "ocd_grant: %d\n", data->ocd_connect_flags,
446 data->ocd_version, data->ocd_grant);
448 obd->obd_upcall.onu_owner = &sbi->ll_lco;
449 obd->obd_upcall.onu_upcall = cl_ocd_update;
451 data->ocd_brw_size = DT_MAX_BRW_SIZE;
453 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data,
456 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
457 "recovery, of which this client is not a "
458 "part. Please wait for recovery to "
459 "complete, abort, or time out.\n", dt);
462 CERROR("%s: Cannot connect to %s: rc = %d\n",
463 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
467 sbi->ll_dt_exp->exp_connect_data = *data;
469 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
470 LUSTRE_SEQ_METADATA);
472 CERROR("%s: Can't init data layer FID infrastructure, "
473 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
477 mutex_lock(&sbi->ll_lco.lco_lock);
478 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
479 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
480 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
481 mutex_unlock(&sbi->ll_lco.lco_lock);
483 fid_zero(&sbi->ll_root_fid);
484 err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
486 CERROR("cannot mds_connect: rc = %d\n", err);
487 GOTO(out_lock_cn_cb, err);
489 if (!fid_is_sane(&sbi->ll_root_fid)) {
490 CERROR("%s: Invalid root fid "DFID" during mount\n",
491 sbi->ll_md_exp->exp_obd->obd_name,
492 PFID(&sbi->ll_root_fid));
493 GOTO(out_lock_cn_cb, err = -EINVAL);
495 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
497 sb->s_op = &lustre_super_operations;
498 #if THREAD_SIZE >= 8192 /*b=17630*/
499 sb->s_export_op = &lustre_export_operations;
503 * XXX: move this to after cbd setup? */
504 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA |
506 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
507 valid |= OBD_MD_FLRMTPERM;
508 else if (sbi->ll_flags & LL_SBI_ACL)
509 valid |= OBD_MD_FLACL;
511 OBD_ALLOC_PTR(op_data);
513 GOTO(out_lock_cn_cb, err = -ENOMEM);
515 op_data->op_fid1 = sbi->ll_root_fid;
516 op_data->op_mode = 0;
517 op_data->op_capa1 = oc;
518 op_data->op_valid = valid;
520 err = md_getattr(sbi->ll_md_exp, op_data, &request);
523 OBD_FREE_PTR(op_data);
525 CERROR("%s: md_getattr failed for root: rc = %d\n",
526 sbi->ll_md_exp->exp_obd->obd_name, err);
527 GOTO(out_lock_cn_cb, err);
530 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
531 sbi->ll_md_exp, &lmd);
533 CERROR("failed to understand root inode md: rc = %d\n", err);
534 ptlrpc_req_finished(request);
535 GOTO(out_lock_cn_cb, err);
538 LASSERT(fid_is_sane(&sbi->ll_root_fid));
539 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
540 sbi->ll_flags & LL_SBI_32BIT_API),
542 md_free_lustre_md(sbi->ll_md_exp, &lmd);
543 ptlrpc_req_finished(request);
547 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
548 #ifdef CONFIG_FS_POSIX_ACL
550 posix_acl_release(lmd.posix_acl);
551 lmd.posix_acl = NULL;
554 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
556 CERROR("lustre_lite: bad iget4 for root\n");
560 err = ll_close_thread_start(&sbi->ll_lcq);
562 CERROR("cannot start close thread: rc %d\n", err);
566 #ifdef CONFIG_FS_POSIX_ACL
567 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
568 rct_init(&sbi->ll_rct);
569 et_init(&sbi->ll_et);
573 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
574 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
575 KEY_CHECKSUM, sizeof(checksum), &checksum,
579 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
580 KEY_CACHE_SET, sizeof(sbi->ll_cache),
581 &sbi->ll_cache, NULL);
583 sb->s_root = d_make_root(root);
584 if (sb->s_root == NULL) {
585 CERROR("%s: can't make root dentry\n",
586 ll_get_fsname(sb, NULL, 0));
587 GOTO(out_root, err = -ENOMEM);
589 #ifdef HAVE_DCACHE_LOCK
590 sb->s_root->d_op = &ll_d_ops;
593 sbi->ll_sdev_orig = sb->s_dev;
595 /* We set sb->s_dev equal on all lustre clients in order to support
596 * NFS export clustering. NFSD requires that the FSID be the same
598 /* s_dev is also used in lt_compare() to compare two fs, but that is
599 * only a node-local comparison. */
600 uuid = obd_get_uuid(sbi->ll_md_exp);
602 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
608 if (proc_lustre_fs_root != NULL) {
609 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
612 CERROR("%s: could not register mount in lprocfs: "
613 "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
623 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
625 obd_disconnect(sbi->ll_dt_exp);
626 sbi->ll_dt_exp = NULL;
627 /* Make sure all OScs are gone, since cl_cache is accessing sbi. */
628 obd_zombie_barrier();
630 obd_fid_fini(sbi->ll_md_exp->exp_obd);
632 obd_disconnect(sbi->ll_md_exp);
633 sbi->ll_md_exp = NULL;
642 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
646 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
648 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
649 KEY_MAX_EASIZE, &size, lmmsize, NULL);
651 CERROR("Get max mdsize error rc %d\n", rc);
657 * Get the value of the default_easize parameter.
659 * \see client_obd::cl_default_mds_easize
661 * \param[in] sbi superblock info for this filesystem
662 * \param[out] lmmsize pointer to storage location for value
664 * \retval 0 on success
665 * \retval negative negated errno on failure
667 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
672 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
673 KEY_DEFAULT_EASIZE, &size, lmmsize, NULL);
675 CERROR("Get default mdsize error rc %d\n", rc);
681 * Set the default_easize parameter to the given value.
683 * \see client_obd::cl_default_mds_easize
685 * \param[in] sbi superblock info for this filesystem
686 * \param[in] lmmsize the size to set
688 * \retval 0 on success
689 * \retval negative negated errno on failure
691 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
695 if (lmmsize < sizeof(struct lov_mds_md) || lmmsize > PAGE_CACHE_SIZE)
698 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
699 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
700 sizeof(int), &lmmsize, NULL);
705 int ll_get_max_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
710 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_COOKIESIZE),
711 KEY_MAX_COOKIESIZE, &size, lmmsize, NULL);
713 CERROR("Get max cookiesize error rc %d\n", rc);
718 int ll_get_default_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
723 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_COOKIESIZE),
724 KEY_DEFAULT_COOKIESIZE, &size, lmmsize, NULL);
726 CERROR("Get default cookiesize error rc %d\n", rc);
731 static void ll_dump_inode(struct inode *inode)
733 struct ll_d_hlist_node *tmp;
734 int dentry_count = 0;
736 LASSERT(inode != NULL);
738 ll_d_hlist_for_each(tmp, &inode->i_dentry)
741 CERROR("%s: inode %p dump: dev=%s fid="DFID
742 " mode=%o count=%u, %d dentries\n",
743 ll_get_fsname(inode->i_sb, NULL, 0), inode,
744 ll_i2mdexp(inode)->exp_obd->obd_name, PFID(ll_inode2fid(inode)),
745 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
748 void lustre_dump_dentry(struct dentry *dentry, int recur)
750 struct list_head *tmp;
753 LASSERT(dentry != NULL);
755 list_for_each(tmp, &dentry->d_subdirs)
758 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
759 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
760 dentry->d_name.len, dentry->d_name.name,
761 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
762 dentry->d_parent, dentry->d_inode, ll_d_count(dentry),
763 dentry->d_flags, dentry->d_fsdata, subdirs);
764 if (dentry->d_inode != NULL)
765 ll_dump_inode(dentry->d_inode);
770 list_for_each(tmp, &dentry->d_subdirs) {
771 struct dentry *d = list_entry(tmp, struct dentry, d_u.d_child);
772 lustre_dump_dentry(d, recur - 1);
776 static void client_common_put_super(struct super_block *sb)
778 struct ll_sb_info *sbi = ll_s2sbi(sb);
781 #ifdef CONFIG_FS_POSIX_ACL
782 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
783 et_fini(&sbi->ll_et);
784 rct_fini(&sbi->ll_rct);
788 ll_close_thread_shutdown(sbi->ll_lcq);
792 list_del(&sbi->ll_conn_chain);
794 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
795 obd_disconnect(sbi->ll_dt_exp);
796 sbi->ll_dt_exp = NULL;
797 /* wait till all OSCs are gone, since cl_cache is accessing sbi.
799 obd_zombie_barrier();
801 lprocfs_unregister_mountpoint(sbi);
803 obd_fid_fini(sbi->ll_md_exp->exp_obd);
804 obd_disconnect(sbi->ll_md_exp);
805 sbi->ll_md_exp = NULL;
810 void ll_kill_super(struct super_block *sb)
812 struct ll_sb_info *sbi;
816 if (!(sb->s_flags & MS_ACTIVE))
820 /* we need restore s_dev from changed for clustred NFS before put_super
821 * because new kernels have cached s_dev and change sb->s_dev in
822 * put_super not affected real removing devices */
824 sb->s_dev = sbi->ll_sdev_orig;
825 sbi->ll_umounting = 1;
827 /* wait running statahead threads to quit */
828 while (atomic_read(&sbi->ll_sa_running) > 0)
829 schedule_timeout_and_set_state(TASK_UNINTERRUPTIBLE,
830 msecs_to_jiffies(MSEC_PER_SEC >> 3));
836 static inline int ll_set_opt(const char *opt, char *data, int fl)
838 if (strncmp(opt, data, strlen(opt)) != 0)
844 /* non-client-specific mount options are parsed in lmd_parse */
845 static int ll_options(char *options, int *flags)
848 char *s1 = options, *s2;
854 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
857 CDEBUG(D_SUPER, "next opt=%s\n", s1);
858 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
863 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
868 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
873 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
878 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
883 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
888 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
893 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
898 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
904 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
909 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
914 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
919 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
924 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
929 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
934 tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW);
939 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
944 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
949 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
954 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
960 s2 = strchr(s1, ',');
968 void ll_lli_init(struct ll_inode_info *lli)
970 lli->lli_inode_magic = LLI_INODE_MAGIC;
972 lli->lli_ioepoch = 0;
973 lli->lli_maxbytes = MAX_LFS_FILESIZE;
974 spin_lock_init(&lli->lli_lock);
975 lli->lli_posix_acl = NULL;
976 lli->lli_remote_perms = NULL;
977 mutex_init(&lli->lli_rmtperm_mutex);
978 /* Do not set lli_fid, it has been initialized already. */
979 fid_zero(&lli->lli_pfid);
980 INIT_LIST_HEAD(&lli->lli_close_list);
981 INIT_LIST_HEAD(&lli->lli_oss_capas);
982 atomic_set(&lli->lli_open_count, 0);
983 lli->lli_mds_capa = NULL;
984 lli->lli_rmtperm_time = 0;
985 lli->lli_pending_och = NULL;
986 lli->lli_mds_read_och = NULL;
987 lli->lli_mds_write_och = NULL;
988 lli->lli_mds_exec_och = NULL;
989 lli->lli_open_fd_read_count = 0;
990 lli->lli_open_fd_write_count = 0;
991 lli->lli_open_fd_exec_count = 0;
992 mutex_init(&lli->lli_och_mutex);
993 spin_lock_init(&lli->lli_agl_lock);
994 lli->lli_has_smd = false;
995 spin_lock_init(&lli->lli_layout_lock);
996 ll_layout_version_set(lli, LL_LAYOUT_GEN_NONE);
997 lli->lli_clob = NULL;
999 init_rwsem(&lli->lli_xattrs_list_rwsem);
1000 mutex_init(&lli->lli_xattrs_enq_lock);
1002 LASSERT(lli->lli_vfs_inode.i_mode != 0);
1003 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
1004 mutex_init(&lli->lli_readdir_mutex);
1005 lli->lli_opendir_key = NULL;
1006 lli->lli_sai = NULL;
1007 spin_lock_init(&lli->lli_sa_lock);
1008 lli->lli_opendir_pid = 0;
1009 lli->lli_sa_enabled = 0;
1010 lli->lli_def_stripe_offset = -1;
1012 mutex_init(&lli->lli_size_mutex);
1013 lli->lli_symlink_name = NULL;
1014 init_rwsem(&lli->lli_trunc_sem);
1015 range_lock_tree_init(&lli->lli_write_tree);
1016 init_rwsem(&lli->lli_glimpse_sem);
1017 lli->lli_glimpse_time = 0;
1018 INIT_LIST_HEAD(&lli->lli_agl_list);
1019 lli->lli_agl_index = 0;
1020 lli->lli_async_rc = 0;
1022 mutex_init(&lli->lli_layout_mutex);
1025 static inline int ll_bdi_register(struct backing_dev_info *bdi)
1027 static atomic_t ll_bdi_num = ATOMIC_INIT(0);
1029 bdi->name = "lustre";
1030 return bdi_register(bdi, NULL, "lustre-%d",
1031 atomic_inc_return(&ll_bdi_num));
1034 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
1036 struct lustre_profile *lprof = NULL;
1037 struct lustre_sb_info *lsi = s2lsi(sb);
1038 struct ll_sb_info *sbi;
1039 char *dt = NULL, *md = NULL;
1040 char *profilenm = get_profile_name(sb);
1041 struct config_llog_instance *cfg;
1042 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1043 const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
1047 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
1053 try_module_get(THIS_MODULE);
1055 /* client additional sb info */
1056 lsi->lsi_llsbi = sbi = ll_init_sbi();
1058 module_put(THIS_MODULE);
1063 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
1065 GOTO(out_free, err);
1067 err = bdi_init(&lsi->lsi_bdi);
1069 GOTO(out_free, err);
1070 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1071 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1072 err = ll_bdi_register(&lsi->lsi_bdi);
1074 GOTO(out_free, err);
1076 sb->s_bdi = &lsi->lsi_bdi;
1077 #ifndef HAVE_DCACHE_LOCK
1078 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1079 sb->s_d_op = &ll_d_ops;
1082 /* Generate a string unique to this super, in case some joker tries
1083 to mount the same fs at two mount points.
1084 Use the address of the super itself.*/
1085 cfg->cfg_instance = sb;
1086 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1087 cfg->cfg_callback = class_config_llog_handler;
1088 /* set up client obds */
1089 err = lustre_process_log(sb, profilenm, cfg);
1091 GOTO(out_free, err);
1093 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1094 lprof = class_get_profile(profilenm);
1095 if (lprof == NULL) {
1096 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1097 " read from the MGS. Does that filesystem "
1098 "exist?\n", profilenm);
1099 GOTO(out_free, err = -EINVAL);
1101 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1102 lprof->lp_md, lprof->lp_dt);
1104 OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
1106 GOTO(out_free, err = -ENOMEM);
1107 sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
1109 OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
1111 GOTO(out_free, err = -ENOMEM);
1112 sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1114 /* connections, registrations, sb setup */
1115 err = client_common_fill_super(sb, md, dt, mnt);
1119 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1121 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1124 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1125 LCONSOLE_WARN("Mounted %s\n", profilenm);
1129 } /* ll_fill_super */
1131 void ll_put_super(struct super_block *sb)
1133 struct config_llog_instance cfg, params_cfg;
1134 struct obd_device *obd;
1135 struct lustre_sb_info *lsi = s2lsi(sb);
1136 struct ll_sb_info *sbi = ll_s2sbi(sb);
1137 char *profilenm = get_profile_name(sb);
1139 int next, force = 1, rc = 0;
1142 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1144 ll_print_capa_stat(sbi);
1146 cfg.cfg_instance = sb;
1147 lustre_end_log(sb, profilenm, &cfg);
1149 params_cfg.cfg_instance = sb;
1150 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1152 if (sbi->ll_md_exp) {
1153 obd = class_exp2obd(sbi->ll_md_exp);
1155 force = obd->obd_force;
1158 /* Wait for unstable pages to be committed to stable storage */
1160 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
1161 rc = l_wait_event(sbi->ll_cache.ccc_unstable_waitq,
1162 atomic_long_read(&sbi->ll_cache.ccc_unstable_nr) == 0,
1166 ccc_count = atomic_long_read(&sbi->ll_cache.ccc_unstable_nr);
1167 if (force == 0 && rc != -EINTR)
1168 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1171 /* We need to set force before the lov_disconnect in
1172 lustre_common_put_super, since l_d cleans up osc's as well. */
1175 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1177 obd->obd_force = force;
1182 /* Only if client_common_fill_super succeeded */
1183 client_common_put_super(sb);
1187 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1188 class_manual_cleanup(obd);
1191 if (sbi->ll_flags & LL_SBI_VERBOSE)
1192 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1195 class_del_profile(profilenm);
1197 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1198 bdi_destroy(&lsi->lsi_bdi);
1199 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1203 lsi->lsi_llsbi = NULL;
1205 lustre_common_put_super(sb);
1207 cl_env_cache_purge(~0);
1209 module_put(THIS_MODULE);
1212 } /* client_put_super */
1214 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1216 struct inode *inode = NULL;
1218 /* NOTE: we depend on atomic igrab() -bzzz */
1219 lock_res_and_lock(lock);
1220 if (lock->l_resource->lr_lvb_inode) {
1221 struct ll_inode_info * lli;
1222 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1223 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1224 inode = igrab(lock->l_resource->lr_lvb_inode);
1226 inode = lock->l_resource->lr_lvb_inode;
1227 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1228 D_WARNING, lock, "lr_lvb_inode %p is "
1229 "bogus: magic %08x",
1230 lock->l_resource->lr_lvb_inode,
1231 lli->lli_inode_magic);
1235 unlock_res_and_lock(lock);
1239 static void ll_dir_clear_lsm_md(struct inode *inode)
1241 struct ll_inode_info *lli = ll_i2info(inode);
1243 LASSERT(S_ISDIR(inode->i_mode));
1245 if (lli->lli_lsm_md != NULL) {
1246 lmv_free_memmd(lli->lli_lsm_md);
1247 lli->lli_lsm_md = NULL;
1251 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1252 const struct lu_fid *fid,
1253 struct lustre_md *md)
1255 struct ll_sb_info *sbi = ll_s2sbi(sb);
1256 struct mdt_body *body = md->body;
1257 struct inode *inode;
1261 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1262 inode = iget_locked(sb, ino);
1263 if (inode == NULL) {
1264 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1265 ll_get_fsname(sb, NULL, 0), PFID(fid));
1266 RETURN(ERR_PTR(-ENOENT));
1269 if (inode->i_state & I_NEW) {
1270 struct ll_inode_info *lli = ll_i2info(inode);
1271 struct lmv_stripe_md *lsm = md->lmv;
1273 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1274 (body->mbo_mode & S_IFMT);
1275 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1278 LTIME_S(inode->i_mtime) = 0;
1279 LTIME_S(inode->i_atime) = 0;
1280 LTIME_S(inode->i_ctime) = 0;
1283 /* initializing backing dev info. */
1284 inode->i_mapping->backing_dev_info =
1285 &s2lsi(inode->i_sb)->lsi_bdi;
1286 inode->i_op = &ll_dir_inode_operations;
1287 inode->i_fop = &ll_dir_operations;
1288 lli->lli_fid = *fid;
1291 LASSERT(lsm != NULL);
1292 /* master object FID */
1293 lli->lli_pfid = body->mbo_fid1;
1294 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1295 lli, PFID(fid), PFID(&lli->lli_pfid));
1296 unlock_new_inode(inode);
1302 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1305 struct lmv_stripe_md *lsm = md->lmv;
1308 LASSERT(lsm != NULL);
1309 /* XXX sigh, this lsm_root initialization should be in
1310 * LMV layer, but it needs ll_iget right now, so we
1311 * put this here right now. */
1312 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1313 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1314 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1315 /* Unfortunately ll_iget will call ll_update_inode,
1316 * where the initialization of slave inode is slightly
1317 * different, so it reset lsm_md to NULL to avoid
1318 * initializing lsm for slave inode. */
1319 /* For migrating inode, master stripe and master object will
1320 * be same, so we only need assign this inode */
1321 if (lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION && i == 0)
1322 lsm->lsm_md_oinfo[i].lmo_root = inode;
1324 lsm->lsm_md_oinfo[i].lmo_root =
1325 ll_iget_anon_dir(inode->i_sb, fid, md);
1327 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1328 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1330 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1338 static inline int lli_lsm_md_eq(const struct lmv_stripe_md *lsm_md1,
1339 const struct lmv_stripe_md *lsm_md2)
1341 return lsm_md1->lsm_md_magic == lsm_md2->lsm_md_magic &&
1342 lsm_md1->lsm_md_stripe_count == lsm_md2->lsm_md_stripe_count &&
1343 lsm_md1->lsm_md_master_mdt_index ==
1344 lsm_md2->lsm_md_master_mdt_index &&
1345 lsm_md1->lsm_md_hash_type == lsm_md2->lsm_md_hash_type &&
1346 lsm_md1->lsm_md_layout_version ==
1347 lsm_md2->lsm_md_layout_version &&
1348 strcmp(lsm_md1->lsm_md_pool_name,
1349 lsm_md2->lsm_md_pool_name) == 0;
1352 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1354 struct ll_inode_info *lli = ll_i2info(inode);
1355 struct lmv_stripe_md *lsm = md->lmv;
1359 LASSERT(S_ISDIR(inode->i_mode));
1360 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1361 PFID(ll_inode2fid(inode)));
1363 /* no striped information from request. */
1365 if (lli->lli_lsm_md == NULL) {
1367 } else if (lli->lli_lsm_md->lsm_md_hash_type &
1368 LMV_HASH_FLAG_MIGRATION) {
1369 /* migration is done, the temporay MIGRATE layout has
1371 CDEBUG(D_INODE, DFID" finish migration.\n",
1372 PFID(ll_inode2fid(inode)));
1373 lmv_free_memmd(lli->lli_lsm_md);
1374 lli->lli_lsm_md = NULL;
1377 /* The lustre_md from req does not include stripeEA,
1378 * see ll_md_setattr */
1383 /* set the directory layout */
1384 if (lli->lli_lsm_md == NULL) {
1386 rc = ll_init_lsm_md(inode, md);
1390 lli->lli_lsm_md = lsm;
1391 /* set lsm_md to NULL, so the following free lustre_md
1392 * will not free this lsm */
1394 CDEBUG(D_INODE, "Set lsm %p magic %x to "DFID"\n", lsm,
1395 lsm->lsm_md_magic, PFID(ll_inode2fid(inode)));
1399 /* Compare the old and new stripe information */
1400 if (!lsm_md_eq(lli->lli_lsm_md, lsm)) {
1401 struct lmv_stripe_md *old_lsm = lli->lli_lsm_md;
1404 CERROR("%s: inode "DFID"(%p)'s lmv layout mismatch (%p)/(%p)"
1405 "magic:0x%x/0x%x stripe count: %d/%d master_mdt: %d/%d"
1406 "hash_type:0x%x/0x%x layout: 0x%x/0x%x pool:%s/%s\n",
1407 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1408 inode, lsm, old_lsm,
1409 lsm->lsm_md_magic, old_lsm->lsm_md_magic,
1410 lsm->lsm_md_stripe_count,
1411 old_lsm->lsm_md_stripe_count,
1412 lsm->lsm_md_master_mdt_index,
1413 old_lsm->lsm_md_master_mdt_index,
1414 lsm->lsm_md_hash_type, old_lsm->lsm_md_hash_type,
1415 lsm->lsm_md_layout_version,
1416 old_lsm->lsm_md_layout_version,
1417 lsm->lsm_md_pool_name,
1418 old_lsm->lsm_md_pool_name);
1420 for (idx = 0; idx < old_lsm->lsm_md_stripe_count; idx++) {
1421 CERROR("%s: sub FIDs in old lsm idx %d, old: "DFID"\n",
1422 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1423 PFID(&old_lsm->lsm_md_oinfo[idx].lmo_fid));
1426 for (idx = 0; idx < lsm->lsm_md_stripe_count; idx++) {
1427 CERROR("%s: sub FIDs in new lsm idx %d, new: "DFID"\n",
1428 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1429 PFID(&lsm->lsm_md_oinfo[idx].lmo_fid));
1438 void ll_clear_inode(struct inode *inode)
1440 struct ll_inode_info *lli = ll_i2info(inode);
1441 struct ll_sb_info *sbi = ll_i2sbi(inode);
1444 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1445 PFID(ll_inode2fid(inode)), inode);
1447 if (S_ISDIR(inode->i_mode)) {
1448 /* these should have been cleared in ll_file_release */
1449 LASSERT(lli->lli_opendir_key == NULL);
1450 LASSERT(lli->lli_sai == NULL);
1451 LASSERT(lli->lli_opendir_pid == 0);
1454 spin_lock(&lli->lli_lock);
1455 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1456 spin_unlock(&lli->lli_lock);
1457 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1459 LASSERT(!lli->lli_open_fd_write_count);
1460 LASSERT(!lli->lli_open_fd_read_count);
1461 LASSERT(!lli->lli_open_fd_exec_count);
1463 if (lli->lli_mds_write_och)
1464 ll_md_real_close(inode, FMODE_WRITE);
1465 if (lli->lli_mds_exec_och)
1466 ll_md_real_close(inode, FMODE_EXEC);
1467 if (lli->lli_mds_read_och)
1468 ll_md_real_close(inode, FMODE_READ);
1470 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1471 OBD_FREE(lli->lli_symlink_name,
1472 strlen(lli->lli_symlink_name) + 1);
1473 lli->lli_symlink_name = NULL;
1476 ll_xattr_cache_destroy(inode);
1478 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1479 LASSERT(lli->lli_posix_acl == NULL);
1480 if (lli->lli_remote_perms) {
1481 free_rmtperm_hash(lli->lli_remote_perms);
1482 lli->lli_remote_perms = NULL;
1485 #ifdef CONFIG_FS_POSIX_ACL
1486 else if (lli->lli_posix_acl) {
1487 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1488 LASSERT(lli->lli_remote_perms == NULL);
1489 posix_acl_release(lli->lli_posix_acl);
1490 lli->lli_posix_acl = NULL;
1493 lli->lli_inode_magic = LLI_INODE_DEAD;
1495 ll_clear_inode_capas(inode);
1496 if (S_ISDIR(inode->i_mode))
1497 ll_dir_clear_lsm_md(inode);
1498 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1499 LASSERT(list_empty(&lli->lli_agl_list));
1502 * XXX This has to be done before lsm is freed below, because
1503 * cl_object still uses inode lsm.
1505 cl_inode_fini(inode);
1506 lli->lli_has_smd = false;
1511 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
1512 struct md_open_data **mod)
1514 struct lustre_md md;
1515 struct inode *inode = dentry->d_inode;
1516 struct ll_sb_info *sbi = ll_i2sbi(inode);
1517 struct ptlrpc_request *request = NULL;
1521 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1522 LUSTRE_OPC_ANY, NULL);
1523 if (IS_ERR(op_data))
1524 RETURN(PTR_ERR(op_data));
1526 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1529 ptlrpc_req_finished(request);
1530 if (rc == -ENOENT) {
1532 /* Unlinked special device node? Or just a race?
1533 * Pretend we done everything. */
1534 if (!S_ISREG(inode->i_mode) &&
1535 !S_ISDIR(inode->i_mode)) {
1536 ia_valid = op_data->op_attr.ia_valid;
1537 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1538 rc = simple_setattr(dentry, &op_data->op_attr);
1539 op_data->op_attr.ia_valid = ia_valid;
1541 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1542 CERROR("md_setattr fails: rc = %d\n", rc);
1547 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1548 sbi->ll_md_exp, &md);
1550 ptlrpc_req_finished(request);
1554 ia_valid = op_data->op_attr.ia_valid;
1555 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1556 * cache is not cleared yet. */
1557 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1558 rc = simple_setattr(dentry, &op_data->op_attr);
1559 op_data->op_attr.ia_valid = ia_valid;
1561 /* Extract epoch data if obtained. */
1562 op_data->op_handle = md.body->mbo_handle;
1563 op_data->op_ioepoch = md.body->mbo_ioepoch;
1565 rc = ll_update_inode(inode, &md);
1566 ptlrpc_req_finished(request);
1571 /* Close IO epoch and send Size-on-MDS attribute update. */
1572 static int ll_setattr_done_writing(struct inode *inode,
1573 struct md_op_data *op_data,
1574 struct md_open_data *mod)
1576 struct ll_inode_info *lli = ll_i2info(inode);
1580 LASSERT(op_data != NULL);
1581 if (!S_ISREG(inode->i_mode))
1584 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1585 op_data->op_ioepoch, PFID(&lli->lli_fid));
1587 op_data->op_flags = MF_EPOCH_CLOSE;
1588 ll_done_writing_attr(inode, op_data);
1589 ll_pack_inode2opdata(inode, op_data, NULL);
1591 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1592 if (rc == -EAGAIN) {
1593 /* MDS has instructed us to obtain Size-on-MDS attribute
1594 * from OSTs and send setattr to back to MDS. */
1595 rc = ll_som_update(inode, op_data);
1597 CERROR("%s: inode "DFID" mdc truncate failed: rc = %d\n",
1598 ll_i2sbi(inode)->ll_md_exp->exp_obd->obd_name,
1599 PFID(ll_inode2fid(inode)), rc);
1604 static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
1606 struct obd_capa *capa;
1609 if (attr->ia_valid & ATTR_SIZE)
1610 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
1612 capa = ll_mdscapa_get(inode);
1614 rc = cl_setattr_ost(inode, attr, capa);
1616 if (attr->ia_valid & ATTR_SIZE)
1617 ll_truncate_free_capa(capa);
1624 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1625 * object(s) determine the file size and mtime. Otherwise, the MDS will
1626 * keep these values until such a time that objects are allocated for it.
1627 * We do the MDS operations first, as it is checking permissions for us.
1628 * We don't to the MDS RPC if there is nothing that we want to store there,
1629 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1630 * going to do an RPC anyways.
1632 * If we are doing a truncate, we will send the mtime and ctime updates
1633 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1634 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1637 * In case of HSMimport, we only set attr on MDS.
1639 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
1641 struct inode *inode = dentry->d_inode;
1642 struct ll_inode_info *lli = ll_i2info(inode);
1643 struct md_op_data *op_data = NULL;
1644 struct md_open_data *mod = NULL;
1645 bool file_is_released = false;
1646 int rc = 0, rc1 = 0;
1649 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1650 "valid %x, hsm_import %d\n",
1651 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1652 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1655 if (attr->ia_valid & ATTR_SIZE) {
1656 /* Check new size against VFS/VM file size limit and rlimit */
1657 rc = inode_newsize_ok(inode, attr->ia_size);
1661 /* The maximum Lustre file size is variable, based on the
1662 * OST maximum object size and number of stripes. This
1663 * needs another check in addition to the VFS check above. */
1664 if (attr->ia_size > ll_file_maxbytes(inode)) {
1665 CDEBUG(D_INODE,"file "DFID" too large %llu > "LPU64"\n",
1666 PFID(&lli->lli_fid), attr->ia_size,
1667 ll_file_maxbytes(inode));
1671 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1674 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1675 if (attr->ia_valid & TIMES_SET_FLAGS) {
1676 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1677 !cfs_capable(CFS_CAP_FOWNER))
1681 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1682 if (attr->ia_valid & ATTR_CTIME) {
1683 attr->ia_ctime = CFS_CURRENT_TIME;
1684 attr->ia_valid |= ATTR_CTIME_SET;
1686 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1687 (attr->ia_valid & ATTR_ATIME)) {
1688 attr->ia_atime = CFS_CURRENT_TIME;
1689 attr->ia_valid |= ATTR_ATIME_SET;
1691 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1692 (attr->ia_valid & ATTR_MTIME)) {
1693 attr->ia_mtime = CFS_CURRENT_TIME;
1694 attr->ia_valid |= ATTR_MTIME_SET;
1697 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1698 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1699 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1700 cfs_time_current_sec());
1702 /* We always do an MDS RPC, even if we're only changing the size;
1703 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1705 OBD_ALLOC_PTR(op_data);
1706 if (op_data == NULL)
1709 if (!S_ISDIR(inode->i_mode)) {
1710 if (attr->ia_valid & ATTR_SIZE)
1711 inode_dio_write_done(inode);
1712 mutex_unlock(&inode->i_mutex);
1715 /* truncate on a released file must failed with -ENODATA,
1716 * so size must not be set on MDS for released file
1717 * but other attributes must be set
1719 if (S_ISREG(inode->i_mode)) {
1720 struct lov_stripe_md *lsm;
1723 ll_layout_refresh(inode, &gen);
1724 lsm = ccc_inode_lsm_get(inode);
1725 if (lsm && lsm->lsm_pattern & LOV_PATTERN_F_RELEASED)
1726 file_is_released = true;
1727 ccc_inode_lsm_put(inode, lsm);
1729 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1730 if (file_is_released) {
1731 rc = ll_layout_restore(inode, 0, attr->ia_size);
1735 file_is_released = false;
1736 ll_layout_refresh(inode, &gen);
1739 /* If we are changing file size, file content is
1740 * modified, flag it. */
1741 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1742 spin_lock(&lli->lli_lock);
1743 lli->lli_flags |= LLIF_DATA_MODIFIED;
1744 spin_unlock(&lli->lli_lock);
1745 op_data->op_bias |= MDS_DATA_MODIFIED;
1749 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1751 /* Open epoch for truncate. */
1752 if (exp_connect_som(ll_i2mdexp(inode)) && !hsm_import &&
1753 (attr->ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
1754 op_data->op_flags = MF_EPOCH_OPEN;
1756 rc = ll_md_setattr(dentry, op_data, &mod);
1760 /* RPC to MDT is sent, cancel data modification flag */
1761 if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) {
1762 spin_lock(&lli->lli_lock);
1763 lli->lli_flags &= ~LLIF_DATA_MODIFIED;
1764 spin_unlock(&lli->lli_lock);
1767 ll_ioepoch_open(lli, op_data->op_ioepoch);
1768 if (!S_ISREG(inode->i_mode) || file_is_released)
1771 if (attr->ia_valid & (ATTR_SIZE |
1772 ATTR_ATIME | ATTR_ATIME_SET |
1773 ATTR_MTIME | ATTR_MTIME_SET)) {
1774 /* For truncate and utimes sending attributes to OSTs, setting
1775 * mtime/atime to the past will be performed under PW [0:EOF]
1776 * extent lock (new_size:EOF for truncate). It may seem
1777 * excessive to send mtime/atime updates to OSTs when not
1778 * setting times to past, but it is necessary due to possible
1779 * time de-synchronization between MDT inode and OST objects */
1780 if (attr->ia_valid & ATTR_SIZE)
1781 down_write(&lli->lli_trunc_sem);
1782 rc = ll_setattr_ost(inode, attr);
1783 if (attr->ia_valid & ATTR_SIZE)
1784 up_write(&lli->lli_trunc_sem);
1789 if (op_data->op_ioepoch) {
1790 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1794 ll_finish_md_op_data(op_data);
1796 if (!S_ISDIR(inode->i_mode)) {
1797 mutex_lock(&inode->i_mutex);
1798 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1799 inode_dio_wait(inode);
1802 ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
1803 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1808 int ll_setattr(struct dentry *de, struct iattr *attr)
1810 int mode = de->d_inode->i_mode;
1812 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1813 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1814 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1816 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1817 (ATTR_SIZE|ATTR_MODE)) &&
1818 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1819 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1820 !(attr->ia_mode & S_ISGID))))
1821 attr->ia_valid |= ATTR_FORCE;
1823 if ((attr->ia_valid & ATTR_MODE) &&
1825 !(attr->ia_mode & S_ISUID) &&
1826 !(attr->ia_valid & ATTR_KILL_SUID))
1827 attr->ia_valid |= ATTR_KILL_SUID;
1829 if ((attr->ia_valid & ATTR_MODE) &&
1830 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1831 !(attr->ia_mode & S_ISGID) &&
1832 !(attr->ia_valid & ATTR_KILL_SGID))
1833 attr->ia_valid |= ATTR_KILL_SGID;
1835 return ll_setattr_raw(de, attr, false);
1838 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1839 __u64 max_age, __u32 flags)
1841 struct ll_sb_info *sbi = ll_s2sbi(sb);
1842 struct obd_statfs obd_osfs;
1846 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1848 CERROR("md_statfs fails: rc = %d\n", rc);
1852 osfs->os_type = sb->s_magic;
1854 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1855 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1857 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1858 flags |= OBD_STATFS_NODELAY;
1860 rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1862 CERROR("obd_statfs fails: rc = %d\n", rc);
1866 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1867 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1870 osfs->os_bsize = obd_osfs.os_bsize;
1871 osfs->os_blocks = obd_osfs.os_blocks;
1872 osfs->os_bfree = obd_osfs.os_bfree;
1873 osfs->os_bavail = obd_osfs.os_bavail;
1875 /* If we don't have as many objects free on the OST as inodes
1876 * on the MDS, we reduce the total number of inodes to
1877 * compensate, so that the "inodes in use" number is correct.
1879 if (obd_osfs.os_ffree < osfs->os_ffree) {
1880 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1882 osfs->os_ffree = obd_osfs.os_ffree;
1887 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1889 struct super_block *sb = de->d_sb;
1890 struct obd_statfs osfs;
1891 __u64 fsid = huge_encode_dev(sb->s_dev);
1894 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1895 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1897 /* Some amount of caching on the client is allowed */
1898 rc = ll_statfs_internal(sb, &osfs,
1899 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1904 statfs_unpack(sfs, &osfs);
1906 /* We need to downshift for all 32-bit kernels, because we can't
1907 * tell if the kernel is being called via sys_statfs64() or not.
1908 * Stop before overflowing f_bsize - in which case it is better
1909 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1910 if (sizeof(long) < 8) {
1911 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1914 osfs.os_blocks >>= 1;
1915 osfs.os_bfree >>= 1;
1916 osfs.os_bavail >>= 1;
1920 sfs->f_blocks = osfs.os_blocks;
1921 sfs->f_bfree = osfs.os_bfree;
1922 sfs->f_bavail = osfs.os_bavail;
1923 sfs->f_fsid.val[0] = (__u32)fsid;
1924 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
1928 void ll_inode_size_lock(struct inode *inode)
1930 struct ll_inode_info *lli;
1932 LASSERT(!S_ISDIR(inode->i_mode));
1934 lli = ll_i2info(inode);
1935 mutex_lock(&lli->lli_size_mutex);
1938 void ll_inode_size_unlock(struct inode *inode)
1940 struct ll_inode_info *lli;
1942 lli = ll_i2info(inode);
1943 mutex_unlock(&lli->lli_size_mutex);
1946 int ll_update_inode(struct inode *inode, struct lustre_md *md)
1948 struct ll_inode_info *lli = ll_i2info(inode);
1949 struct mdt_body *body = md->body;
1950 struct lov_stripe_md *lsm = md->lsm;
1951 struct ll_sb_info *sbi = ll_i2sbi(inode);
1953 LASSERT((lsm != NULL) == ((body->mbo_valid & OBD_MD_FLEASIZE) != 0));
1955 if (!lli->lli_has_smd &&
1956 !(sbi->ll_flags & LL_SBI_LAYOUT_LOCK))
1957 cl_file_inode_init(inode, md);
1959 lli->lli_maxbytes = lsm->lsm_maxbytes;
1960 if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
1961 lli->lli_maxbytes = MAX_LFS_FILESIZE;
1964 if (S_ISDIR(inode->i_mode)) {
1967 rc = ll_update_lsm_md(inode, md);
1972 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1973 if (body->mbo_valid & OBD_MD_FLRMTPERM)
1974 ll_update_remote_perm(inode, md->remote_perm);
1976 #ifdef CONFIG_FS_POSIX_ACL
1977 else if (body->mbo_valid & OBD_MD_FLACL) {
1978 spin_lock(&lli->lli_lock);
1979 if (lli->lli_posix_acl)
1980 posix_acl_release(lli->lli_posix_acl);
1981 lli->lli_posix_acl = md->posix_acl;
1982 spin_unlock(&lli->lli_lock);
1985 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
1986 sbi->ll_flags & LL_SBI_32BIT_API);
1987 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
1989 if (body->mbo_valid & OBD_MD_FLATIME) {
1990 if (body->mbo_atime > LTIME_S(inode->i_atime))
1991 LTIME_S(inode->i_atime) = body->mbo_atime;
1992 lli->lli_atime = body->mbo_atime;
1995 if (body->mbo_valid & OBD_MD_FLMTIME) {
1996 if (body->mbo_mtime > LTIME_S(inode->i_mtime)) {
1997 CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1998 "to "LPU64"\n", inode->i_ino,
1999 LTIME_S(inode->i_mtime), body->mbo_mtime);
2000 LTIME_S(inode->i_mtime) = body->mbo_mtime;
2002 lli->lli_mtime = body->mbo_mtime;
2005 if (body->mbo_valid & OBD_MD_FLCTIME) {
2006 if (body->mbo_ctime > LTIME_S(inode->i_ctime))
2007 LTIME_S(inode->i_ctime) = body->mbo_ctime;
2008 lli->lli_ctime = body->mbo_ctime;
2011 if (body->mbo_valid & OBD_MD_FLMODE)
2012 inode->i_mode = (inode->i_mode & S_IFMT) |
2013 (body->mbo_mode & ~S_IFMT);
2015 if (body->mbo_valid & OBD_MD_FLTYPE)
2016 inode->i_mode = (inode->i_mode & ~S_IFMT) |
2017 (body->mbo_mode & S_IFMT);
2019 LASSERT(inode->i_mode != 0);
2020 if (S_ISREG(inode->i_mode))
2021 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
2022 LL_MAX_BLKSIZE_BITS);
2024 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
2026 if (body->mbo_valid & OBD_MD_FLUID)
2027 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
2028 if (body->mbo_valid & OBD_MD_FLGID)
2029 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
2030 if (body->mbo_valid & OBD_MD_FLFLAGS)
2031 inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
2032 if (body->mbo_valid & OBD_MD_FLNLINK)
2033 set_nlink(inode, body->mbo_nlink);
2034 if (body->mbo_valid & OBD_MD_FLRDEV)
2035 inode->i_rdev = old_decode_dev(body->mbo_rdev);
2037 if (body->mbo_valid & OBD_MD_FLID) {
2038 /* FID shouldn't be changed! */
2039 if (fid_is_sane(&lli->lli_fid)) {
2040 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
2041 "Trying to change FID "DFID
2042 " to the "DFID", inode "DFID"(%p)\n",
2043 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
2044 PFID(ll_inode2fid(inode)), inode);
2046 lli->lli_fid = body->mbo_fid1;
2050 LASSERT(fid_seq(&lli->lli_fid) != 0);
2052 if (body->mbo_valid & OBD_MD_FLSIZE) {
2053 if (exp_connect_som(ll_i2mdexp(inode)) &&
2054 S_ISREG(inode->i_mode)) {
2055 struct lustre_handle lockh;
2058 /* As it is possible a blocking ast has been processed
2059 * by this time, we need to check there is an UPDATE
2060 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
2062 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
2063 &lockh, LDLM_FL_CBPENDING,
2067 if (lli->lli_flags & (LLIF_DONE_WRITING |
2068 LLIF_EPOCH_PENDING |
2070 CERROR("%s: inode "DFID" flags %u still"
2071 " has size authority! do not "
2072 "trust the size from MDS\n",
2073 sbi->ll_md_exp->exp_obd->obd_name,
2074 PFID(ll_inode2fid(inode)),
2077 /* Use old size assignment to avoid
2078 * deadlock bz14138 & bz14326 */
2079 i_size_write(inode, body->mbo_size);
2080 spin_lock(&lli->lli_lock);
2081 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
2082 spin_unlock(&lli->lli_lock);
2084 ldlm_lock_decref(&lockh, mode);
2087 /* Use old size assignment to avoid
2088 * deadlock bz14138 & bz14326 */
2089 i_size_write(inode, body->mbo_size);
2092 "inode="DFID", updating i_size %llu\n",
2093 PFID(ll_inode2fid(inode)),
2094 (unsigned long long)body->mbo_size);
2097 if (body->mbo_valid & OBD_MD_FLBLOCKS)
2098 inode->i_blocks = body->mbo_blocks;
2101 if (body->mbo_valid & OBD_MD_FLMDSCAPA) {
2102 LASSERT(md->mds_capa);
2103 ll_add_capa(inode, md->mds_capa);
2106 if (body->mbo_valid & OBD_MD_FLOSSCAPA) {
2107 LASSERT(md->oss_capa);
2108 ll_add_capa(inode, md->oss_capa);
2111 if (body->mbo_valid & OBD_MD_TSTATE) {
2112 if (body->mbo_t_state & MS_RESTORE)
2113 lli->lli_flags |= LLIF_FILE_RESTORING;
2119 int ll_read_inode2(struct inode *inode, void *opaque)
2121 struct lustre_md *md = opaque;
2122 struct ll_inode_info *lli = ll_i2info(inode);
2126 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2127 PFID(&lli->lli_fid), inode);
2129 LASSERT(!lli->lli_has_smd);
2131 /* Core attributes from the MDS first. This is a new inode, and
2132 * the VFS doesn't zero times in the core inode so we have to do
2133 * it ourselves. They will be overwritten by either MDS or OST
2134 * attributes - we just need to make sure they aren't newer. */
2135 LTIME_S(inode->i_mtime) = 0;
2136 LTIME_S(inode->i_atime) = 0;
2137 LTIME_S(inode->i_ctime) = 0;
2139 rc = ll_update_inode(inode, md);
2143 /* OIDEBUG(inode); */
2145 /* initializing backing dev info. */
2146 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2149 if (S_ISREG(inode->i_mode)) {
2150 struct ll_sb_info *sbi = ll_i2sbi(inode);
2151 inode->i_op = &ll_file_inode_operations;
2152 inode->i_fop = sbi->ll_fop;
2153 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2155 } else if (S_ISDIR(inode->i_mode)) {
2156 inode->i_op = &ll_dir_inode_operations;
2157 inode->i_fop = &ll_dir_operations;
2159 } else if (S_ISLNK(inode->i_mode)) {
2160 inode->i_op = &ll_fast_symlink_inode_operations;
2163 inode->i_op = &ll_special_inode_operations;
2165 init_special_inode(inode, inode->i_mode,
2174 void ll_delete_inode(struct inode *inode)
2176 struct ll_inode_info *lli = ll_i2info(inode);
2179 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
2180 /* It is last chance to write out dirty pages,
2181 * otherwise we may lose data while umount */
2182 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
2184 truncate_inode_pages_final(&inode->i_data);
2186 LASSERTF(inode->i_data.nrpages == 0, "inode="DFID"(%p) nrpages=%lu, "
2187 "see https://jira.hpdd.intel.com/browse/LU-118\n",
2188 PFID(ll_inode2fid(inode)), inode, inode->i_data.nrpages);
2190 #ifdef HAVE_SBOPS_EVICT_INODE
2191 ll_clear_inode(inode);
2198 int ll_iocontrol(struct inode *inode, struct file *file,
2199 unsigned int cmd, unsigned long arg)
2201 struct ll_sb_info *sbi = ll_i2sbi(inode);
2202 struct ptlrpc_request *req = NULL;
2207 case FSFILT_IOC_GETFLAGS: {
2208 struct mdt_body *body;
2209 struct md_op_data *op_data;
2211 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2212 0, 0, LUSTRE_OPC_ANY,
2214 if (IS_ERR(op_data))
2215 RETURN(PTR_ERR(op_data));
2217 op_data->op_valid = OBD_MD_FLFLAGS;
2218 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2219 ll_finish_md_op_data(op_data);
2221 CERROR("%s: failure inode "DFID": rc = %d\n",
2222 sbi->ll_md_exp->exp_obd->obd_name,
2223 PFID(ll_inode2fid(inode)), rc);
2227 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2229 flags = body->mbo_flags;
2231 ptlrpc_req_finished(req);
2233 RETURN(put_user(flags, (int __user *)arg));
2235 case FSFILT_IOC_SETFLAGS: {
2236 struct lov_stripe_md *lsm;
2237 struct obd_info oinfo = { { { 0 } } };
2238 struct md_op_data *op_data;
2240 if (get_user(flags, (int __user *)arg))
2243 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2244 LUSTRE_OPC_ANY, NULL);
2245 if (IS_ERR(op_data))
2246 RETURN(PTR_ERR(op_data));
2248 op_data->op_attr_flags = flags;
2249 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
2250 rc = md_setattr(sbi->ll_md_exp, op_data,
2251 NULL, 0, NULL, 0, &req, NULL);
2252 ll_finish_md_op_data(op_data);
2253 ptlrpc_req_finished(req);
2257 inode->i_flags = ll_ext_to_inode_flags(flags);
2259 lsm = ccc_inode_lsm_get(inode);
2260 if (!lsm_has_objects(lsm)) {
2261 ccc_inode_lsm_put(inode, lsm);
2265 OBDO_ALLOC(oinfo.oi_oa);
2267 ccc_inode_lsm_put(inode, lsm);
2271 oinfo.oi_oa->o_oi = lsm->lsm_oi;
2272 oinfo.oi_oa->o_flags = flags;
2273 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
2275 oinfo.oi_capa = ll_mdscapa_get(inode);
2276 obdo_set_parent_fid(oinfo.oi_oa, &ll_i2info(inode)->lli_fid);
2277 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
2278 capa_put(oinfo.oi_capa);
2279 OBDO_FREE(oinfo.oi_oa);
2280 ccc_inode_lsm_put(inode, lsm);
2282 if (rc && rc != -EPERM && rc != -EACCES)
2283 CERROR("osc_setattr_async fails: rc = %d\n", rc);
2294 int ll_flush_ctx(struct inode *inode)
2296 struct ll_sb_info *sbi = ll_i2sbi(inode);
2298 CDEBUG(D_SEC, "flush context for user %d\n",
2299 from_kuid(&init_user_ns, current_uid()));
2301 obd_set_info_async(NULL, sbi->ll_md_exp,
2302 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2304 obd_set_info_async(NULL, sbi->ll_dt_exp,
2305 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2310 /* umount -f client means force down, don't save state */
2311 void ll_umount_begin(struct super_block *sb)
2313 struct ll_sb_info *sbi = ll_s2sbi(sb);
2314 struct obd_device *obd;
2315 struct obd_ioctl_data *ioc_data;
2318 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2319 sb->s_count, atomic_read(&sb->s_active));
2321 obd = class_exp2obd(sbi->ll_md_exp);
2323 CERROR("Invalid MDC connection handle "LPX64"\n",
2324 sbi->ll_md_exp->exp_handle.h_cookie);
2330 obd = class_exp2obd(sbi->ll_dt_exp);
2332 CERROR("Invalid LOV connection handle "LPX64"\n",
2333 sbi->ll_dt_exp->exp_handle.h_cookie);
2339 OBD_ALLOC_PTR(ioc_data);
2341 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2342 sizeof *ioc_data, ioc_data, NULL);
2344 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2345 sizeof *ioc_data, ioc_data, NULL);
2347 OBD_FREE_PTR(ioc_data);
2350 /* Really, we'd like to wait until there are no requests outstanding,
2351 * and then continue. For now, we just invalidate the requests,
2352 * schedule() and sleep one second if needed, and hope.
2358 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2360 struct ll_sb_info *sbi = ll_s2sbi(sb);
2361 char *profilenm = get_profile_name(sb);
2365 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2366 read_only = *flags & MS_RDONLY;
2367 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2368 sizeof(KEY_READ_ONLY),
2369 KEY_READ_ONLY, sizeof(read_only),
2372 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2373 profilenm, read_only ?
2374 "read-only" : "read-write", err);
2379 sb->s_flags |= MS_RDONLY;
2381 sb->s_flags &= ~MS_RDONLY;
2383 if (sbi->ll_flags & LL_SBI_VERBOSE)
2384 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2385 read_only ? "read-only" : "read-write");
2390 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2391 struct super_block *sb, struct lookup_intent *it)
2393 struct ll_sb_info *sbi = NULL;
2394 struct lustre_md md = { NULL };
2398 LASSERT(*inode || sb);
2399 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2400 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2401 sbi->ll_md_exp, &md);
2406 rc = ll_update_inode(*inode, &md);
2410 LASSERT(sb != NULL);
2413 * At this point server returns to client's same fid as client
2414 * generated for creating. So using ->fid1 is okay here.
2416 LASSERT(fid_is_sane(&md.body->mbo_fid1));
2418 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2419 sbi->ll_flags & LL_SBI_32BIT_API),
2421 if (IS_ERR(*inode)) {
2422 #ifdef CONFIG_FS_POSIX_ACL
2424 posix_acl_release(md.posix_acl);
2425 md.posix_acl = NULL;
2428 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2430 CERROR("new_inode -fatal: rc %d\n", rc);
2435 /* Handling piggyback layout lock.
2436 * Layout lock can be piggybacked by getattr and open request.
2437 * The lsm can be applied to inode only if it comes with a layout lock
2438 * otherwise correct layout may be overwritten, for example:
2439 * 1. proc1: mdt returns a lsm but not granting layout
2440 * 2. layout was changed by another client
2441 * 3. proc2: refresh layout and layout lock granted
2442 * 4. proc1: to apply a stale layout */
2443 if (it != NULL && it->d.lustre.it_lock_mode != 0) {
2444 struct lustre_handle lockh;
2445 struct ldlm_lock *lock;
2447 lockh.cookie = it->d.lustre.it_lock_handle;
2448 lock = ldlm_handle2lock(&lockh);
2449 LASSERT(lock != NULL);
2450 if (ldlm_has_layout(lock)) {
2451 struct cl_object_conf conf;
2453 memset(&conf, 0, sizeof(conf));
2454 conf.coc_opc = OBJECT_CONF_SET;
2455 conf.coc_inode = *inode;
2456 conf.coc_lock = lock;
2457 conf.u.coc_md = &md;
2458 (void)ll_layout_conf(*inode, &conf);
2460 LDLM_LOCK_PUT(lock);
2465 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2466 md_free_lustre_md(sbi->ll_md_exp, &md);
2470 int ll_obd_statfs(struct inode *inode, void __user *arg)
2472 struct ll_sb_info *sbi = NULL;
2473 struct obd_export *exp;
2475 struct obd_ioctl_data *data = NULL;
2477 __u32 __user flags; /* not user, but obd_iocontrol is abused */
2480 if (!inode || !(sbi = ll_i2sbi(inode)))
2481 GOTO(out_statfs, rc = -EINVAL);
2483 rc = obd_ioctl_getdata(&buf, &len, arg);
2485 GOTO(out_statfs, rc);
2488 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2489 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2490 GOTO(out_statfs, rc = -EINVAL);
2492 if (data->ioc_inllen1 != sizeof(__u32) ||
2493 data->ioc_inllen2 != sizeof(__u32) ||
2494 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2495 data->ioc_plen2 != sizeof(struct obd_uuid))
2496 GOTO(out_statfs, rc = -EINVAL);
2498 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2499 if (type & LL_STATFS_LMV)
2500 exp = sbi->ll_md_exp;
2501 else if (type & LL_STATFS_LOV)
2502 exp = sbi->ll_dt_exp;
2504 GOTO(out_statfs, rc = -ENODEV);
2506 flags = (type & LL_STATFS_NODELAY) ? OBD_STATFS_NODELAY : 0;
2507 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, &flags);
2509 GOTO(out_statfs, rc);
2512 obd_ioctl_freedata(buf, len);
2516 int ll_process_config(struct lustre_cfg *lcfg)
2518 struct super_block *sb;
2523 /* The instance name contains the sb: lustre-client-aacfe000 */
2524 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2525 if (!ptr || !*(++ptr))
2527 if (sscanf(ptr, "%lx", &x) != 1)
2529 sb = (struct super_block *)x;
2530 /* This better be a real Lustre superblock! */
2531 LASSERT(s2lsi(sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2533 /* Note we have not called client_common_fill_super yet, so
2534 proc fns must be able to handle that! */
2535 rc = class_process_proc_param(PARAM_LLITE, lprocfs_llite_obd_vars,
2542 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2543 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2544 struct inode *i1, struct inode *i2,
2545 const char *name, size_t namelen,
2546 __u32 mode, __u32 opc, void *data)
2548 LASSERT(i1 != NULL);
2551 /* Do not reuse namelen for something else. */
2553 return ERR_PTR(-EINVAL);
2555 if (namelen > ll_i2sbi(i1)->ll_namelen)
2556 return ERR_PTR(-ENAMETOOLONG);
2558 if (!lu_name_is_valid_2(name, namelen))
2559 return ERR_PTR(-EINVAL);
2562 if (op_data == NULL)
2563 OBD_ALLOC_PTR(op_data);
2565 if (op_data == NULL)
2566 return ERR_PTR(-ENOMEM);
2568 ll_i2gids(op_data->op_suppgids, i1, i2);
2569 op_data->op_fid1 = *ll_inode2fid(i1);
2570 op_data->op_capa1 = ll_mdscapa_get(i1);
2571 op_data->op_default_stripe_offset = -1;
2572 if (S_ISDIR(i1->i_mode)) {
2573 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2574 op_data->op_default_stripe_offset =
2575 ll_i2info(i1)->lli_def_stripe_offset;
2579 op_data->op_fid2 = *ll_inode2fid(i2);
2580 op_data->op_capa2 = ll_mdscapa_get(i2);
2581 if (S_ISDIR(i2->i_mode))
2582 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2584 fid_zero(&op_data->op_fid2);
2585 op_data->op_capa2 = NULL;
2588 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2589 op_data->op_cli_flags |= CLI_HASH64;
2591 if (ll_need_32bit_api(ll_i2sbi(i1)))
2592 op_data->op_cli_flags |= CLI_API32;
2594 op_data->op_name = name;
2595 op_data->op_namelen = namelen;
2596 op_data->op_mode = mode;
2597 op_data->op_mod_time = cfs_time_current_sec();
2598 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2599 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2600 op_data->op_cap = cfs_curproc_cap_pack();
2601 op_data->op_bias = 0;
2602 op_data->op_cli_flags = 0;
2603 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2604 filename_is_volatile(name, namelen, &op_data->op_mds)) {
2605 op_data->op_bias |= MDS_CREATE_VOLATILE;
2607 op_data->op_mds = 0;
2609 op_data->op_data = data;
2611 /* When called by ll_setattr_raw, file is i1. */
2612 if (LLIF_DATA_MODIFIED & ll_i2info(i1)->lli_flags)
2613 op_data->op_bias |= MDS_DATA_MODIFIED;
2618 void ll_finish_md_op_data(struct md_op_data *op_data)
2620 capa_put(op_data->op_capa1);
2621 capa_put(op_data->op_capa2);
2622 OBD_FREE_PTR(op_data);
2625 #ifdef HAVE_SUPEROPS_USE_DENTRY
2626 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2628 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2631 struct ll_sb_info *sbi;
2633 #ifdef HAVE_SUPEROPS_USE_DENTRY
2634 LASSERT((seq != NULL) && (dentry != NULL));
2635 sbi = ll_s2sbi(dentry->d_sb);
2637 LASSERT((seq != NULL) && (vfs != NULL));
2638 sbi = ll_s2sbi(vfs->mnt_sb);
2641 if (sbi->ll_flags & LL_SBI_NOLCK)
2642 seq_puts(seq, ",nolock");
2644 if (sbi->ll_flags & LL_SBI_FLOCK)
2645 seq_puts(seq, ",flock");
2647 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2648 seq_puts(seq, ",localflock");
2650 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2651 seq_puts(seq, ",user_xattr");
2653 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2654 seq_puts(seq, ",lazystatfs");
2656 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2657 seq_puts(seq, ",user_fid2path");
2663 * Get obd name by cmd, and copy out to user space
2665 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2667 struct ll_sb_info *sbi = ll_i2sbi(inode);
2668 struct obd_device *obd;
2671 if (cmd == OBD_IOC_GETDTNAME)
2672 obd = class_exp2obd(sbi->ll_dt_exp);
2673 else if (cmd == OBD_IOC_GETMDNAME)
2674 obd = class_exp2obd(sbi->ll_md_exp);
2681 if (copy_to_user((void __user *)arg, obd->obd_name,
2682 strlen(obd->obd_name) + 1))
2689 * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
2690 * fsname will be returned in this buffer; otherwise, a static buffer will be
2691 * used to store the fsname and returned to caller.
2693 char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
2695 static char fsname_static[MTI_NAME_MAXLEN];
2696 struct lustre_sb_info *lsi = s2lsi(sb);
2701 /* this means the caller wants to use static buffer
2702 * and it doesn't care about race. Usually this is
2703 * in error reporting path */
2704 buf = fsname_static;
2705 buflen = sizeof(fsname_static);
2708 len = strlen(lsi->lsi_lmd->lmd_profile);
2709 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
2710 if (ptr && (strcmp(ptr, "-client") == 0))
2713 if (unlikely(len >= buflen))
2715 strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
2721 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2728 p.mnt = current->fs->root.mnt;
2730 path = d_path(&p, buf, bufsize);
2735 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2737 char *buf, *path = NULL;
2738 struct dentry *dentry = NULL;
2739 struct vvp_object *obj = cl_inode2vvp(page->mapping->host);
2741 /* this can be called inside spin lock so use GFP_ATOMIC. */
2742 buf = (char *)__get_free_page(GFP_ATOMIC);
2744 dentry = d_find_alias(page->mapping->host);
2746 path = ll_d_path(dentry, buf, PAGE_SIZE);
2750 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2751 "(rc %d)\n", ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
2752 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2753 PFID(&obj->vob_header.coh_lu.loh_fid),
2754 (path && !IS_ERR(path)) ? path : "", ioret);
2760 free_page((unsigned long)buf);
2763 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
2764 struct lov_user_md **kbuf)
2766 struct lov_user_md lum;
2770 if (copy_from_user(&lum, md, sizeof(lum)))
2773 lum_size = ll_lov_user_md_size(&lum);
2777 OBD_ALLOC(*kbuf, lum_size);
2781 if (copy_from_user(*kbuf, md, lum_size) != 0) {
2782 OBD_FREE(*kbuf, lum_size);
2790 * Compute llite root squash state after a change of root squash
2791 * configuration setting or add/remove of a lnet nid
2793 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2795 struct root_squash_info *squash = &sbi->ll_squash;
2798 lnet_process_id_t id;
2800 /* Update norootsquash flag */
2801 down_write(&squash->rsi_sem);
2802 if (list_empty(&squash->rsi_nosquash_nids))
2803 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2805 /* Do not apply root squash as soon as one of our NIDs is
2806 * in the nosquash_nids list */
2809 while (LNetGetId(i++, &id) != -ENOENT) {
2810 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2812 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2818 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2820 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2822 up_write(&squash->rsi_sem);
2826 * Parse linkea content to extract information about a given hardlink
2828 * \param[in] ldata - Initialized linkea data
2829 * \param[in] linkno - Link identifier
2830 * \param[out] parent_fid - The entry's parent FID
2831 * \param[out] ln - Entry name destination buffer
2833 * \retval 0 on success
2834 * \retval Appropriate negative error code on failure
2836 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
2837 struct lu_fid *parent_fid, struct lu_name *ln)
2843 rc = linkea_init(ldata);
2847 if (linkno >= ldata->ld_leh->leh_reccount)
2848 /* beyond last link */
2851 linkea_first_entry(ldata);
2852 for (idx = 0; ldata->ld_lee != NULL; idx++) {
2853 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
2858 linkea_next_entry(ldata);
2868 * Get parent FID and name of an identified link. Operation is performed for
2869 * a given link number, letting the caller iterate over linkno to list one or
2870 * all links of an entry.
2872 * \param[in] file - File descriptor against which to perform the operation
2873 * \param[in,out] arg - User-filled structure containing the linkno to operate
2874 * on and the available size. It is eventually filled with
2875 * the requested information or left untouched on error
2877 * \retval - 0 on success
2878 * \retval - Appropriate negative error code on failure
2880 int ll_getparent(struct file *file, struct getparent __user *arg)
2882 struct dentry *dentry = file->f_dentry;
2883 struct inode *inode = file->f_dentry->d_inode;
2884 struct linkea_data *ldata;
2885 struct lu_buf buf = LU_BUF_NULL;
2887 struct lu_fid parent_fid;
2894 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
2895 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
2898 if (get_user(name_size, &arg->gp_name_size))
2901 if (get_user(linkno, &arg->gp_linkno))
2904 if (name_size > PATH_MAX)
2907 OBD_ALLOC(ldata, sizeof(*ldata));
2911 rc = linkea_data_new(ldata, &buf);
2913 GOTO(ldata_free, rc);
2915 rc = ll_getxattr(dentry, XATTR_NAME_LINK, buf.lb_buf, buf.lb_len);
2919 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
2923 if (ln.ln_namelen >= name_size)
2924 GOTO(lb_free, rc = -EOVERFLOW);
2926 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
2927 GOTO(lb_free, rc = -EFAULT);
2929 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
2930 GOTO(lb_free, rc = -EFAULT);
2932 if (put_user('\0', arg->gp_name + ln.ln_namelen))
2933 GOTO(lb_free, rc = -EFAULT);
2938 OBD_FREE(ldata, sizeof(*ldata));