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, 2013, 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/types.h>
45 #include <linux/version.h>
48 #include <lustre_ioctl.h>
49 #include <lustre_lite.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_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_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_agl_total, 0);
142 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
145 sbi->ll_squash.rsi_uid = 0;
146 sbi->ll_squash.rsi_gid = 0;
147 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
148 init_rwsem(&sbi->ll_squash.rsi_sem);
153 static void ll_free_sbi(struct super_block *sb)
155 struct ll_sb_info *sbi = ll_s2sbi(sb);
159 spin_lock(&ll_sb_lock);
160 list_del(&sbi->ll_list);
161 spin_unlock(&ll_sb_lock);
162 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
163 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
164 OBD_FREE(sbi, sizeof(*sbi));
169 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
170 struct vfsmount *mnt)
172 struct inode *root = 0;
173 struct ll_sb_info *sbi = ll_s2sbi(sb);
174 struct obd_device *obd;
175 struct obd_capa *oc = NULL;
176 struct obd_statfs *osfs = NULL;
177 struct ptlrpc_request *request = NULL;
178 struct obd_connect_data *data = NULL;
179 struct obd_uuid *uuid;
180 struct md_op_data *op_data;
181 struct lustre_md lmd;
183 int size, err, checksum;
186 obd = class_name2obd(md);
188 CERROR("MD %s: not setup or attached\n", md);
202 /* indicate the features supported by this client */
203 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
204 OBD_CONNECT_ATTRFID |
205 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
206 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
207 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
208 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
209 OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR |
210 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH|
211 OBD_CONNECT_EINPROGRESS |
212 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
213 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS |
214 OBD_CONNECT_MAX_EASIZE |
215 OBD_CONNECT_FLOCK_DEAD |
216 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK;
218 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
219 data->ocd_connect_flags |= OBD_CONNECT_SOM;
221 #ifdef HAVE_LRU_RESIZE_SUPPORT
222 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
223 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
225 #ifdef CONFIG_FS_POSIX_ACL
226 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
229 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
230 /* flag mdc connection as lightweight, only used for test
231 * purpose, use with care */
232 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
234 data->ocd_ibits_known = MDS_INODELOCK_FULL;
235 data->ocd_version = LUSTRE_VERSION_CODE;
237 if (sb->s_flags & MS_RDONLY)
238 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
239 if (sbi->ll_flags & LL_SBI_USER_XATTR)
240 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
242 #ifdef HAVE_MS_FLOCK_LOCK
243 /* force vfs to use lustre handler for flock() calls - bug 10743 */
244 sb->s_flags |= MS_FLOCK_LOCK;
246 #ifdef MS_HAS_NEW_AOPS
247 sb->s_flags |= MS_HAS_NEW_AOPS;
250 if (sbi->ll_flags & LL_SBI_FLOCK)
251 sbi->ll_fop = &ll_file_operations_flock;
252 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
253 sbi->ll_fop = &ll_file_operations;
255 sbi->ll_fop = &ll_file_operations_noflock;
258 data->ocd_connect_flags |= OBD_CONNECT_REAL;
259 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
260 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
262 data->ocd_brw_size = MD_MAX_BRW_SIZE;
264 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
266 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
267 "recovery, of which this client is not a "
268 "part. Please wait for recovery to complete,"
269 " abort, or time out.\n", md);
272 CERROR("cannot connect to %s: rc = %d\n", md, err);
276 sbi->ll_md_exp->exp_connect_data = *data;
278 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
279 LUSTRE_SEQ_METADATA);
281 CERROR("%s: Can't init metadata layer FID infrastructure, "
282 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
286 /* For mount, we only need fs info from MDT0, and also in DNE, it
287 * can make sure the client can be mounted as long as MDT0 is
289 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
290 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
291 OBD_STATFS_FOR_MDT0);
293 GOTO(out_md_fid, err);
295 /* This needs to be after statfs to ensure connect has finished.
296 * Note that "data" does NOT contain the valid connect reply.
297 * If connecting to a 1.8 server there will be no LMV device, so
298 * we can access the MDC export directly and exp_connect_flags will
299 * be non-zero, but if accessing an upgraded 2.1 server it will
300 * have the correct flags filled in.
301 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
302 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
303 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
304 valid != CLIENT_CONNECT_MDT_REQD) {
307 OBD_ALLOC_WAIT(buf, PAGE_CACHE_SIZE);
308 obd_connect_flags2str(buf, PAGE_CACHE_SIZE,
309 valid ^ CLIENT_CONNECT_MDT_REQD, ",");
310 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
311 "feature(s) needed for correct operation "
312 "of this client (%s). Please upgrade "
313 "server or downgrade client.\n",
314 sbi->ll_md_exp->exp_obd->obd_name, buf);
315 OBD_FREE(buf, PAGE_CACHE_SIZE);
316 GOTO(out_md_fid, err = -EPROTO);
319 size = sizeof(*data);
320 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
321 KEY_CONN_DATA, &size, data, NULL);
323 CERROR("%s: Get connect data failed: rc = %d\n",
324 sbi->ll_md_exp->exp_obd->obd_name, err);
325 GOTO(out_md_fid, err);
328 LASSERT(osfs->os_bsize);
329 sb->s_blocksize = osfs->os_bsize;
330 sb->s_blocksize_bits = log2(osfs->os_bsize);
331 sb->s_magic = LL_SUPER_MAGIC;
332 sb->s_maxbytes = MAX_LFS_FILESIZE;
333 sbi->ll_namelen = osfs->os_namelen;
334 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
336 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
337 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
338 LCONSOLE_INFO("Disabling user_xattr feature because "
339 "it is not supported on the server\n");
340 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
343 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
345 sb->s_flags |= MS_POSIXACL;
347 sbi->ll_flags |= LL_SBI_ACL;
349 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
351 sb->s_flags &= ~MS_POSIXACL;
353 sbi->ll_flags &= ~LL_SBI_ACL;
356 if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
357 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
358 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
359 LCONSOLE_INFO("client is set as remote by default.\n");
362 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
363 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
364 LCONSOLE_INFO("client claims to be remote, but server "
365 "rejected, forced to be local.\n");
369 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
370 LCONSOLE_INFO("client enabled MDS capability!\n");
371 sbi->ll_flags |= LL_SBI_MDS_CAPA;
374 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
375 LCONSOLE_INFO("client enabled OSS capability!\n");
376 sbi->ll_flags |= LL_SBI_OSS_CAPA;
379 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
380 sbi->ll_flags |= LL_SBI_64BIT_HASH;
382 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
383 sbi->ll_md_brw_pages = data->ocd_brw_size >> PAGE_CACHE_SHIFT;
385 sbi->ll_md_brw_pages = 1;
387 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
388 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
390 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
391 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
392 LCONSOLE_INFO("%s: disabling xattr cache due to "
393 "unknown maximum xattr size.\n", dt);
395 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
396 sbi->ll_xattr_cache_enabled = 1;
400 obd = class_name2obd(dt);
402 CERROR("DT %s: not setup or attached\n", dt);
403 GOTO(out_md_fid, err = -ENODEV);
406 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
407 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
408 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
409 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
410 OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
411 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
412 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
413 OBD_CONNECT_MAXBYTES |
414 OBD_CONNECT_EINPROGRESS |
415 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
416 OBD_CONNECT_LAYOUTLOCK |
417 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK;
419 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
420 data->ocd_connect_flags |= OBD_CONNECT_SOM;
422 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
423 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
424 * disabled by default, because it can still be enabled on the
425 * fly via /proc. As a consequence, we still need to come to an
426 * agreement on the supported algorithms at connect time */
427 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
429 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
430 data->ocd_cksum_types = OBD_CKSUM_ADLER;
432 data->ocd_cksum_types = cksum_types_supported_client();
435 #ifdef HAVE_LRU_RESIZE_SUPPORT
436 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
438 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
439 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
441 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
442 "ocd_grant: %d\n", data->ocd_connect_flags,
443 data->ocd_version, data->ocd_grant);
445 obd->obd_upcall.onu_owner = &sbi->ll_lco;
446 obd->obd_upcall.onu_upcall = cl_ocd_update;
448 data->ocd_brw_size = DT_MAX_BRW_SIZE;
450 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data,
453 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
454 "recovery, of which this client is not a "
455 "part. Please wait for recovery to "
456 "complete, abort, or time out.\n", dt);
459 CERROR("%s: Cannot connect to %s: rc = %d\n",
460 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
464 sbi->ll_dt_exp->exp_connect_data = *data;
466 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
467 LUSTRE_SEQ_METADATA);
469 CERROR("%s: Can't init data layer FID infrastructure, "
470 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
474 mutex_lock(&sbi->ll_lco.lco_lock);
475 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
476 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
477 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
478 mutex_unlock(&sbi->ll_lco.lco_lock);
480 fid_zero(&sbi->ll_root_fid);
481 err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
483 CERROR("cannot mds_connect: rc = %d\n", err);
484 GOTO(out_lock_cn_cb, err);
486 if (!fid_is_sane(&sbi->ll_root_fid)) {
487 CERROR("%s: Invalid root fid "DFID" during mount\n",
488 sbi->ll_md_exp->exp_obd->obd_name,
489 PFID(&sbi->ll_root_fid));
490 GOTO(out_lock_cn_cb, err = -EINVAL);
492 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
494 sb->s_op = &lustre_super_operations;
495 #if THREAD_SIZE >= 8192 /*b=17630*/
496 sb->s_export_op = &lustre_export_operations;
500 * XXX: move this to after cbd setup? */
501 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA |
503 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
504 valid |= OBD_MD_FLRMTPERM;
505 else if (sbi->ll_flags & LL_SBI_ACL)
506 valid |= OBD_MD_FLACL;
508 OBD_ALLOC_PTR(op_data);
510 GOTO(out_lock_cn_cb, err = -ENOMEM);
512 op_data->op_fid1 = sbi->ll_root_fid;
513 op_data->op_mode = 0;
514 op_data->op_capa1 = oc;
515 op_data->op_valid = valid;
517 err = md_getattr(sbi->ll_md_exp, op_data, &request);
520 OBD_FREE_PTR(op_data);
522 CERROR("%s: md_getattr failed for root: rc = %d\n",
523 sbi->ll_md_exp->exp_obd->obd_name, err);
524 GOTO(out_lock_cn_cb, err);
527 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
528 sbi->ll_md_exp, &lmd);
530 CERROR("failed to understand root inode md: rc = %d\n", err);
531 ptlrpc_req_finished(request);
532 GOTO(out_lock_cn_cb, err);
535 LASSERT(fid_is_sane(&sbi->ll_root_fid));
536 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
537 sbi->ll_flags & LL_SBI_32BIT_API),
539 md_free_lustre_md(sbi->ll_md_exp, &lmd);
540 ptlrpc_req_finished(request);
544 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
545 #ifdef CONFIG_FS_POSIX_ACL
547 posix_acl_release(lmd.posix_acl);
548 lmd.posix_acl = NULL;
551 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
553 CERROR("lustre_lite: bad iget4 for root\n");
557 err = ll_close_thread_start(&sbi->ll_lcq);
559 CERROR("cannot start close thread: rc %d\n", err);
563 #ifdef CONFIG_FS_POSIX_ACL
564 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
565 rct_init(&sbi->ll_rct);
566 et_init(&sbi->ll_et);
570 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
571 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
572 KEY_CHECKSUM, sizeof(checksum), &checksum,
576 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
577 KEY_CACHE_SET, sizeof(sbi->ll_cache),
578 &sbi->ll_cache, NULL);
580 sb->s_root = d_make_root(root);
581 if (sb->s_root == NULL) {
582 CERROR("%s: can't make root dentry\n",
583 ll_get_fsname(sb, NULL, 0));
584 GOTO(out_root, err = -ENOMEM);
586 #ifdef HAVE_DCACHE_LOCK
587 sb->s_root->d_op = &ll_d_ops;
590 sbi->ll_sdev_orig = sb->s_dev;
592 /* We set sb->s_dev equal on all lustre clients in order to support
593 * NFS export clustering. NFSD requires that the FSID be the same
595 /* s_dev is also used in lt_compare() to compare two fs, but that is
596 * only a node-local comparison. */
597 uuid = obd_get_uuid(sbi->ll_md_exp);
599 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
605 if (proc_lustre_fs_root != NULL) {
606 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
609 CERROR("%s: could not register mount in lprocfs: "
610 "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
620 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
622 obd_disconnect(sbi->ll_dt_exp);
623 sbi->ll_dt_exp = NULL;
624 /* Make sure all OScs are gone, since cl_cache is accessing sbi. */
625 obd_zombie_barrier();
627 obd_fid_fini(sbi->ll_md_exp->exp_obd);
629 obd_disconnect(sbi->ll_md_exp);
630 sbi->ll_md_exp = NULL;
639 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
643 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
645 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
646 KEY_MAX_EASIZE, &size, lmmsize, NULL);
648 CERROR("Get max mdsize error rc %d\n", rc);
653 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
658 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
659 KEY_DEFAULT_EASIZE, &size, lmmsize, NULL);
661 CERROR("Get default mdsize error rc %d\n", rc);
666 int ll_get_max_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
671 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_COOKIESIZE),
672 KEY_MAX_COOKIESIZE, &size, lmmsize, NULL);
674 CERROR("Get max cookiesize error rc %d\n", rc);
679 int ll_get_default_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
684 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_COOKIESIZE),
685 KEY_DEFAULT_COOKIESIZE, &size, lmmsize, NULL);
687 CERROR("Get default cookiesize error rc %d\n", rc);
692 static void ll_dump_inode(struct inode *inode)
694 struct ll_d_hlist_node *tmp;
695 int dentry_count = 0;
697 LASSERT(inode != NULL);
699 ll_d_hlist_for_each(tmp, &inode->i_dentry)
702 CERROR("%s: inode %p dump: dev=%s fid="DFID
703 " mode=%o count=%u, %d dentries\n",
704 ll_get_fsname(inode->i_sb, NULL, 0), inode,
705 ll_i2mdexp(inode)->exp_obd->obd_name, PFID(ll_inode2fid(inode)),
706 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
709 void lustre_dump_dentry(struct dentry *dentry, int recur)
711 struct list_head *tmp;
714 LASSERT(dentry != NULL);
716 list_for_each(tmp, &dentry->d_subdirs)
719 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
720 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
721 dentry->d_name.len, dentry->d_name.name,
722 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
723 dentry->d_parent, dentry->d_inode, d_count(dentry),
724 dentry->d_flags, dentry->d_fsdata, subdirs);
725 if (dentry->d_inode != NULL)
726 ll_dump_inode(dentry->d_inode);
731 list_for_each(tmp, &dentry->d_subdirs) {
732 struct dentry *d = list_entry(tmp, struct dentry, d_u.d_child);
733 lustre_dump_dentry(d, recur - 1);
737 static void client_common_put_super(struct super_block *sb)
739 struct ll_sb_info *sbi = ll_s2sbi(sb);
742 #ifdef CONFIG_FS_POSIX_ACL
743 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
744 et_fini(&sbi->ll_et);
745 rct_fini(&sbi->ll_rct);
749 ll_close_thread_shutdown(sbi->ll_lcq);
753 list_del(&sbi->ll_conn_chain);
755 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
756 obd_disconnect(sbi->ll_dt_exp);
757 sbi->ll_dt_exp = NULL;
758 /* wait till all OSCs are gone, since cl_cache is accessing sbi.
760 obd_zombie_barrier();
762 lprocfs_unregister_mountpoint(sbi);
764 obd_fid_fini(sbi->ll_md_exp->exp_obd);
765 obd_disconnect(sbi->ll_md_exp);
766 sbi->ll_md_exp = NULL;
771 void ll_kill_super(struct super_block *sb)
773 struct ll_sb_info *sbi;
778 if (!(sb->s_flags & MS_ACTIVE))
782 /* we need restore s_dev from changed for clustred NFS before put_super
783 * because new kernels have cached s_dev and change sb->s_dev in
784 * put_super not affected real removing devices */
786 sb->s_dev = sbi->ll_sdev_orig;
787 sbi->ll_umounting = 1;
792 static inline int ll_set_opt(const char *opt, char *data, int fl)
794 if (strncmp(opt, data, strlen(opt)) != 0)
800 /* non-client-specific mount options are parsed in lmd_parse */
801 static int ll_options(char *options, int *flags)
804 char *s1 = options, *s2;
810 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
813 CDEBUG(D_SUPER, "next opt=%s\n", s1);
814 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
819 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
824 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
829 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
834 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
839 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
844 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 6, 51, 0)
845 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
847 /* Ignore deprecated mount option. The client will
848 * always try to mount with ACL support, whether this
849 * is used depends on whether server supports it. */
850 LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
851 "mount option 'acl'.\n");
854 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
856 LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
857 "mount option 'noacl'.\n");
861 #warning "{no}acl options have been deprecated since 1.8, please remove them"
863 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
868 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
873 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
879 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
884 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
889 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
894 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
899 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
904 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
909 tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW);
914 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
919 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
924 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
929 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
935 s2 = strchr(s1, ',');
943 void ll_lli_init(struct ll_inode_info *lli)
945 lli->lli_inode_magic = LLI_INODE_MAGIC;
947 lli->lli_ioepoch = 0;
948 lli->lli_maxbytes = MAX_LFS_FILESIZE;
949 spin_lock_init(&lli->lli_lock);
950 lli->lli_posix_acl = NULL;
951 lli->lli_remote_perms = NULL;
952 mutex_init(&lli->lli_rmtperm_mutex);
953 /* Do not set lli_fid, it has been initialized already. */
954 fid_zero(&lli->lli_pfid);
955 INIT_LIST_HEAD(&lli->lli_close_list);
956 INIT_LIST_HEAD(&lli->lli_oss_capas);
957 atomic_set(&lli->lli_open_count, 0);
958 lli->lli_mds_capa = NULL;
959 lli->lli_rmtperm_time = 0;
960 lli->lli_pending_och = NULL;
961 lli->lli_mds_read_och = NULL;
962 lli->lli_mds_write_och = NULL;
963 lli->lli_mds_exec_och = NULL;
964 lli->lli_open_fd_read_count = 0;
965 lli->lli_open_fd_write_count = 0;
966 lli->lli_open_fd_exec_count = 0;
967 mutex_init(&lli->lli_och_mutex);
968 spin_lock_init(&lli->lli_agl_lock);
969 lli->lli_has_smd = false;
970 spin_lock_init(&lli->lli_layout_lock);
971 ll_layout_version_set(lli, LL_LAYOUT_GEN_NONE);
972 lli->lli_clob = NULL;
974 init_rwsem(&lli->lli_xattrs_list_rwsem);
975 mutex_init(&lli->lli_xattrs_enq_lock);
977 LASSERT(lli->lli_vfs_inode.i_mode != 0);
978 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
979 mutex_init(&lli->lli_readdir_mutex);
980 lli->lli_opendir_key = NULL;
982 spin_lock_init(&lli->lli_sa_lock);
983 lli->lli_opendir_pid = 0;
985 mutex_init(&lli->lli_size_mutex);
986 lli->lli_symlink_name = NULL;
987 init_rwsem(&lli->lli_trunc_sem);
988 mutex_init(&lli->lli_write_mutex);
989 init_rwsem(&lli->lli_glimpse_sem);
990 lli->lli_glimpse_time = 0;
991 INIT_LIST_HEAD(&lli->lli_agl_list);
992 lli->lli_agl_index = 0;
993 lli->lli_async_rc = 0;
995 mutex_init(&lli->lli_layout_mutex);
998 static inline int ll_bdi_register(struct backing_dev_info *bdi)
1000 static atomic_t ll_bdi_num = ATOMIC_INIT(0);
1002 bdi->name = "lustre";
1003 return bdi_register(bdi, NULL, "lustre-%d",
1004 atomic_inc_return(&ll_bdi_num));
1007 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
1009 struct lustre_profile *lprof = NULL;
1010 struct lustre_sb_info *lsi = s2lsi(sb);
1011 struct ll_sb_info *sbi;
1012 char *dt = NULL, *md = NULL;
1013 char *profilenm = get_profile_name(sb);
1014 struct config_llog_instance *cfg;
1015 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1016 const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
1020 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
1026 try_module_get(THIS_MODULE);
1028 /* client additional sb info */
1029 lsi->lsi_llsbi = sbi = ll_init_sbi();
1031 module_put(THIS_MODULE);
1036 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
1038 GOTO(out_free, err);
1040 err = bdi_init(&lsi->lsi_bdi);
1042 GOTO(out_free, err);
1043 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1044 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1045 err = ll_bdi_register(&lsi->lsi_bdi);
1047 GOTO(out_free, err);
1049 sb->s_bdi = &lsi->lsi_bdi;
1050 #ifndef HAVE_DCACHE_LOCK
1051 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1052 sb->s_d_op = &ll_d_ops;
1055 /* Generate a string unique to this super, in case some joker tries
1056 to mount the same fs at two mount points.
1057 Use the address of the super itself.*/
1058 cfg->cfg_instance = sb;
1059 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1060 cfg->cfg_callback = class_config_llog_handler;
1061 /* set up client obds */
1062 err = lustre_process_log(sb, profilenm, cfg);
1064 GOTO(out_free, err);
1066 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1067 lprof = class_get_profile(profilenm);
1068 if (lprof == NULL) {
1069 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1070 " read from the MGS. Does that filesystem "
1071 "exist?\n", profilenm);
1072 GOTO(out_free, err = -EINVAL);
1074 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1075 lprof->lp_md, lprof->lp_dt);
1077 OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
1079 GOTO(out_free, err = -ENOMEM);
1080 sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
1082 OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
1084 GOTO(out_free, err = -ENOMEM);
1085 sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1087 /* connections, registrations, sb setup */
1088 err = client_common_fill_super(sb, md, dt, mnt);
1092 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1094 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1097 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1098 LCONSOLE_WARN("Mounted %s\n", profilenm);
1102 } /* ll_fill_super */
1104 void ll_put_super(struct super_block *sb)
1106 struct config_llog_instance cfg, params_cfg;
1107 struct obd_device *obd;
1108 struct lustre_sb_info *lsi = s2lsi(sb);
1109 struct ll_sb_info *sbi = ll_s2sbi(sb);
1110 char *profilenm = get_profile_name(sb);
1111 int ccc_count, next, force = 1, rc = 0;
1114 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1116 ll_print_capa_stat(sbi);
1118 cfg.cfg_instance = sb;
1119 lustre_end_log(sb, profilenm, &cfg);
1121 params_cfg.cfg_instance = sb;
1122 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1124 if (sbi->ll_md_exp) {
1125 obd = class_exp2obd(sbi->ll_md_exp);
1127 force = obd->obd_force;
1130 /* Wait for unstable pages to be committed to stable storage */
1132 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
1133 rc = l_wait_event(sbi->ll_cache.ccc_unstable_waitq,
1134 atomic_read(&sbi->ll_cache.ccc_unstable_nr) == 0,
1138 ccc_count = atomic_read(&sbi->ll_cache.ccc_unstable_nr);
1139 if (force == 0 && rc != -EINTR)
1140 LASSERTF(ccc_count == 0, "count: %i\n", ccc_count);
1143 /* We need to set force before the lov_disconnect in
1144 lustre_common_put_super, since l_d cleans up osc's as well. */
1147 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1149 obd->obd_force = force;
1154 /* Only if client_common_fill_super succeeded */
1155 client_common_put_super(sb);
1159 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1160 class_manual_cleanup(obd);
1163 if (sbi->ll_flags & LL_SBI_VERBOSE)
1164 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1167 class_del_profile(profilenm);
1169 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1170 bdi_destroy(&lsi->lsi_bdi);
1171 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1175 lsi->lsi_llsbi = NULL;
1177 lustre_common_put_super(sb);
1179 cl_env_cache_purge(~0);
1181 module_put(THIS_MODULE);
1184 } /* client_put_super */
1186 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1188 struct inode *inode = NULL;
1190 /* NOTE: we depend on atomic igrab() -bzzz */
1191 lock_res_and_lock(lock);
1192 if (lock->l_resource->lr_lvb_inode) {
1193 struct ll_inode_info * lli;
1194 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1195 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1196 inode = igrab(lock->l_resource->lr_lvb_inode);
1198 inode = lock->l_resource->lr_lvb_inode;
1199 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1200 D_WARNING, lock, "lr_lvb_inode %p is "
1201 "bogus: magic %08x",
1202 lock->l_resource->lr_lvb_inode,
1203 lli->lli_inode_magic);
1207 unlock_res_and_lock(lock);
1211 static void ll_dir_clear_lsm_md(struct inode *inode)
1213 struct ll_inode_info *lli = ll_i2info(inode);
1215 LASSERT(S_ISDIR(inode->i_mode));
1217 if (lli->lli_lsm_md != NULL) {
1218 lmv_free_memmd(lli->lli_lsm_md);
1219 lli->lli_lsm_md = NULL;
1223 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1224 const struct lu_fid *fid,
1225 struct lustre_md *md)
1227 struct ll_sb_info *sbi = ll_s2sbi(sb);
1228 struct mdt_body *body = md->body;
1229 struct inode *inode;
1233 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1234 inode = iget_locked(sb, ino);
1235 if (inode == NULL) {
1236 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1237 ll_get_fsname(sb, NULL, 0), PFID(fid));
1238 RETURN(ERR_PTR(-ENOENT));
1241 if (inode->i_state & I_NEW) {
1242 struct ll_inode_info *lli = ll_i2info(inode);
1243 struct lmv_stripe_md *lsm = md->lmv;
1245 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1246 (body->mbo_mode & S_IFMT);
1247 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1250 LTIME_S(inode->i_mtime) = 0;
1251 LTIME_S(inode->i_atime) = 0;
1252 LTIME_S(inode->i_ctime) = 0;
1255 /* initializing backing dev info. */
1256 inode->i_mapping->backing_dev_info =
1257 &s2lsi(inode->i_sb)->lsi_bdi;
1258 inode->i_op = &ll_dir_inode_operations;
1259 inode->i_fop = &ll_dir_operations;
1260 lli->lli_fid = *fid;
1263 LASSERT(lsm != NULL);
1264 /* master object FID */
1265 lli->lli_pfid = body->mbo_fid1;
1266 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1267 lli, PFID(fid), PFID(&lli->lli_pfid));
1268 unlock_new_inode(inode);
1274 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1277 struct lmv_stripe_md *lsm = md->lmv;
1280 LASSERT(lsm != NULL);
1281 /* XXX sigh, this lsm_root initialization should be in
1282 * LMV layer, but it needs ll_iget right now, so we
1283 * put this here right now. */
1284 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1285 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1286 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1287 /* Unfortunately ll_iget will call ll_update_inode,
1288 * where the initialization of slave inode is slightly
1289 * different, so it reset lsm_md to NULL to avoid
1290 * initializing lsm for slave inode. */
1291 /* For migrating inode, master stripe and master object will
1292 * be same, so we only need assign this inode */
1293 if (lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION && i == 0)
1294 lsm->lsm_md_oinfo[i].lmo_root = inode;
1296 lsm->lsm_md_oinfo[i].lmo_root =
1297 ll_iget_anon_dir(inode->i_sb, fid, md);
1299 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1300 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1302 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1307 /* Here is where the lsm is being initialized(fill lmo_info) after
1308 * client retrieve MD stripe information from MDT. */
1309 return md_update_lsm_md(ll_i2mdexp(inode), lsm, md->body,
1310 ll_md_blocking_ast);
1313 static inline int lli_lsm_md_eq(const struct lmv_stripe_md *lsm_md1,
1314 const struct lmv_stripe_md *lsm_md2)
1316 return lsm_md1->lsm_md_magic == lsm_md2->lsm_md_magic &&
1317 lsm_md1->lsm_md_stripe_count == lsm_md2->lsm_md_stripe_count &&
1318 lsm_md1->lsm_md_master_mdt_index ==
1319 lsm_md2->lsm_md_master_mdt_index &&
1320 lsm_md1->lsm_md_hash_type == lsm_md2->lsm_md_hash_type &&
1321 lsm_md1->lsm_md_layout_version ==
1322 lsm_md2->lsm_md_layout_version &&
1323 strcmp(lsm_md1->lsm_md_pool_name,
1324 lsm_md2->lsm_md_pool_name) == 0;
1327 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1329 struct ll_inode_info *lli = ll_i2info(inode);
1330 struct lmv_stripe_md *lsm = md->lmv;
1334 LASSERT(S_ISDIR(inode->i_mode));
1335 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1336 PFID(ll_inode2fid(inode)));
1338 /* no striped information from request. */
1340 if (lli->lli_lsm_md == NULL) {
1342 } else if (lli->lli_lsm_md->lsm_md_hash_type &
1343 LMV_HASH_FLAG_MIGRATION) {
1344 /* migration is done, the temporay MIGRATE layout has
1346 CDEBUG(D_INODE, DFID" finish migration.\n",
1347 PFID(ll_inode2fid(inode)));
1348 lmv_free_memmd(lli->lli_lsm_md);
1349 lli->lli_lsm_md = NULL;
1352 /* The lustre_md from req does not include stripeEA,
1353 * see ll_md_setattr */
1358 /* set the directory layout */
1359 if (lli->lli_lsm_md == NULL) {
1361 rc = ll_init_lsm_md(inode, md);
1365 lli->lli_lsm_md = lsm;
1366 /* set lsm_md to NULL, so the following free lustre_md
1367 * will not free this lsm */
1369 CDEBUG(D_INODE, "Set lsm %p magic %x to "DFID"\n", lsm,
1370 lsm->lsm_md_magic, PFID(ll_inode2fid(inode)));
1374 /* Compare the old and new stripe information */
1375 if (!lsm_md_eq(lli->lli_lsm_md, lsm)) {
1376 struct lmv_stripe_md *old_lsm = lli->lli_lsm_md;
1379 CERROR("%s: lmv layout mismatch "DFID"(%p)/"DFID"(%p)"
1380 "magic:0x%x/0x%x stripe count: %d/%d master_mdt: %d/%d"
1381 "hash_type:0x%x/0x%x layout: 0x%x/0x%x pool:%s/%s\n",
1382 ll_get_fsname(inode->i_sb, NULL, 0),
1383 PFID(&lsm->lsm_md_master_fid), lsm,
1384 PFID(&old_lsm->lsm_md_master_fid), old_lsm,
1385 lsm->lsm_md_magic, old_lsm->lsm_md_magic,
1386 lsm->lsm_md_stripe_count,
1387 old_lsm->lsm_md_stripe_count,
1388 lsm->lsm_md_master_mdt_index,
1389 old_lsm->lsm_md_master_mdt_index,
1390 lsm->lsm_md_hash_type, old_lsm->lsm_md_hash_type,
1391 lsm->lsm_md_layout_version,
1392 old_lsm->lsm_md_layout_version,
1393 lsm->lsm_md_pool_name,
1394 old_lsm->lsm_md_pool_name);
1396 for (idx = 0; idx < old_lsm->lsm_md_stripe_count; idx++) {
1397 CERROR("%s: sub FIDs in old lsm idx %d, old: "DFID"\n",
1398 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1399 PFID(&old_lsm->lsm_md_oinfo[idx].lmo_fid));
1402 for (idx = 0; idx < lsm->lsm_md_stripe_count; idx++) {
1403 CERROR("%s: sub FIDs in new lsm idx %d, new: "DFID"\n",
1404 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1405 PFID(&lsm->lsm_md_oinfo[idx].lmo_fid));
1411 rc = md_update_lsm_md(ll_i2mdexp(inode), ll_i2info(inode)->lli_lsm_md,
1412 md->body, ll_md_blocking_ast);
1417 void ll_clear_inode(struct inode *inode)
1419 struct ll_inode_info *lli = ll_i2info(inode);
1420 struct ll_sb_info *sbi = ll_i2sbi(inode);
1423 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1424 PFID(ll_inode2fid(inode)), inode);
1426 if (S_ISDIR(inode->i_mode)) {
1427 /* these should have been cleared in ll_file_release */
1428 LASSERT(lli->lli_opendir_key == NULL);
1429 LASSERT(lli->lli_sai == NULL);
1430 LASSERT(lli->lli_opendir_pid == 0);
1433 spin_lock(&lli->lli_lock);
1434 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1435 spin_unlock(&lli->lli_lock);
1436 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1438 LASSERT(!lli->lli_open_fd_write_count);
1439 LASSERT(!lli->lli_open_fd_read_count);
1440 LASSERT(!lli->lli_open_fd_exec_count);
1442 if (lli->lli_mds_write_och)
1443 ll_md_real_close(inode, FMODE_WRITE);
1444 if (lli->lli_mds_exec_och)
1445 ll_md_real_close(inode, FMODE_EXEC);
1446 if (lli->lli_mds_read_och)
1447 ll_md_real_close(inode, FMODE_READ);
1449 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1450 OBD_FREE(lli->lli_symlink_name,
1451 strlen(lli->lli_symlink_name) + 1);
1452 lli->lli_symlink_name = NULL;
1455 ll_xattr_cache_destroy(inode);
1457 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1458 LASSERT(lli->lli_posix_acl == NULL);
1459 if (lli->lli_remote_perms) {
1460 free_rmtperm_hash(lli->lli_remote_perms);
1461 lli->lli_remote_perms = NULL;
1464 #ifdef CONFIG_FS_POSIX_ACL
1465 else if (lli->lli_posix_acl) {
1466 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1467 LASSERT(lli->lli_remote_perms == NULL);
1468 posix_acl_release(lli->lli_posix_acl);
1469 lli->lli_posix_acl = NULL;
1472 lli->lli_inode_magic = LLI_INODE_DEAD;
1474 ll_clear_inode_capas(inode);
1475 if (S_ISDIR(inode->i_mode))
1476 ll_dir_clear_lsm_md(inode);
1477 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1478 LASSERT(list_empty(&lli->lli_agl_list));
1481 * XXX This has to be done before lsm is freed below, because
1482 * cl_object still uses inode lsm.
1484 cl_inode_fini(inode);
1485 lli->lli_has_smd = false;
1490 int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
1491 struct md_open_data **mod)
1493 struct lustre_md md;
1494 struct inode *inode = dentry->d_inode;
1495 struct ll_sb_info *sbi = ll_i2sbi(inode);
1496 struct ptlrpc_request *request = NULL;
1500 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1501 LUSTRE_OPC_ANY, NULL);
1502 if (IS_ERR(op_data))
1503 RETURN(PTR_ERR(op_data));
1505 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1508 ptlrpc_req_finished(request);
1509 if (rc == -ENOENT) {
1511 /* Unlinked special device node? Or just a race?
1512 * Pretend we done everything. */
1513 if (!S_ISREG(inode->i_mode) &&
1514 !S_ISDIR(inode->i_mode)) {
1515 ia_valid = op_data->op_attr.ia_valid;
1516 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1517 rc = simple_setattr(dentry, &op_data->op_attr);
1518 op_data->op_attr.ia_valid = ia_valid;
1520 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1521 CERROR("md_setattr fails: rc = %d\n", rc);
1526 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1527 sbi->ll_md_exp, &md);
1529 ptlrpc_req_finished(request);
1533 ia_valid = op_data->op_attr.ia_valid;
1534 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1535 * cache is not cleared yet. */
1536 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1537 rc = simple_setattr(dentry, &op_data->op_attr);
1538 op_data->op_attr.ia_valid = ia_valid;
1540 /* Extract epoch data if obtained. */
1541 op_data->op_handle = md.body->mbo_handle;
1542 op_data->op_ioepoch = md.body->mbo_ioepoch;
1544 rc = ll_update_inode(inode, &md);
1545 ptlrpc_req_finished(request);
1550 /* Close IO epoch and send Size-on-MDS attribute update. */
1551 static int ll_setattr_done_writing(struct inode *inode,
1552 struct md_op_data *op_data,
1553 struct md_open_data *mod)
1555 struct ll_inode_info *lli = ll_i2info(inode);
1559 LASSERT(op_data != NULL);
1560 if (!S_ISREG(inode->i_mode))
1563 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1564 op_data->op_ioepoch, PFID(&lli->lli_fid));
1566 op_data->op_flags = MF_EPOCH_CLOSE;
1567 ll_done_writing_attr(inode, op_data);
1568 ll_pack_inode2opdata(inode, op_data, NULL);
1570 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1571 if (rc == -EAGAIN) {
1572 /* MDS has instructed us to obtain Size-on-MDS attribute
1573 * from OSTs and send setattr to back to MDS. */
1574 rc = ll_som_update(inode, op_data);
1576 CERROR("%s: inode "DFID" mdc truncate failed: rc = %d\n",
1577 ll_i2sbi(inode)->ll_md_exp->exp_obd->obd_name,
1578 PFID(ll_inode2fid(inode)), rc);
1583 static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
1585 struct obd_capa *capa;
1588 if (attr->ia_valid & ATTR_SIZE)
1589 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
1591 capa = ll_mdscapa_get(inode);
1593 rc = cl_setattr_ost(inode, attr, capa);
1595 if (attr->ia_valid & ATTR_SIZE)
1596 ll_truncate_free_capa(capa);
1603 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1604 * object(s) determine the file size and mtime. Otherwise, the MDS will
1605 * keep these values until such a time that objects are allocated for it.
1606 * We do the MDS operations first, as it is checking permissions for us.
1607 * We don't to the MDS RPC if there is nothing that we want to store there,
1608 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1609 * going to do an RPC anyways.
1611 * If we are doing a truncate, we will send the mtime and ctime updates
1612 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1613 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1616 * In case of HSMimport, we only set attr on MDS.
1618 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
1620 struct inode *inode = dentry->d_inode;
1621 struct ll_inode_info *lli = ll_i2info(inode);
1622 struct md_op_data *op_data = NULL;
1623 struct md_open_data *mod = NULL;
1624 bool file_is_released = false;
1625 int rc = 0, rc1 = 0;
1628 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1629 "valid %x, hsm_import %d\n",
1630 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1631 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1634 if (attr->ia_valid & ATTR_SIZE) {
1635 /* Check new size against VFS/VM file size limit and rlimit */
1636 rc = inode_newsize_ok(inode, attr->ia_size);
1640 /* The maximum Lustre file size is variable, based on the
1641 * OST maximum object size and number of stripes. This
1642 * needs another check in addition to the VFS check above. */
1643 if (attr->ia_size > ll_file_maxbytes(inode)) {
1644 CDEBUG(D_INODE,"file "DFID" too large %llu > "LPU64"\n",
1645 PFID(&lli->lli_fid), attr->ia_size,
1646 ll_file_maxbytes(inode));
1650 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1653 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1654 if (attr->ia_valid & TIMES_SET_FLAGS) {
1655 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1656 !cfs_capable(CFS_CAP_FOWNER))
1660 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1661 if (attr->ia_valid & ATTR_CTIME) {
1662 attr->ia_ctime = CFS_CURRENT_TIME;
1663 attr->ia_valid |= ATTR_CTIME_SET;
1665 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1666 (attr->ia_valid & ATTR_ATIME)) {
1667 attr->ia_atime = CFS_CURRENT_TIME;
1668 attr->ia_valid |= ATTR_ATIME_SET;
1670 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1671 (attr->ia_valid & ATTR_MTIME)) {
1672 attr->ia_mtime = CFS_CURRENT_TIME;
1673 attr->ia_valid |= ATTR_MTIME_SET;
1676 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1677 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1678 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1679 cfs_time_current_sec());
1681 /* We always do an MDS RPC, even if we're only changing the size;
1682 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1684 OBD_ALLOC_PTR(op_data);
1685 if (op_data == NULL)
1688 if (!S_ISDIR(inode->i_mode)) {
1689 if (attr->ia_valid & ATTR_SIZE)
1690 inode_dio_write_done(inode);
1691 mutex_unlock(&inode->i_mutex);
1694 /* truncate on a released file must failed with -ENODATA,
1695 * so size must not be set on MDS for released file
1696 * but other attributes must be set
1698 if (S_ISREG(inode->i_mode)) {
1699 struct lov_stripe_md *lsm;
1702 ll_layout_refresh(inode, &gen);
1703 lsm = ccc_inode_lsm_get(inode);
1704 if (lsm && lsm->lsm_pattern & LOV_PATTERN_F_RELEASED)
1705 file_is_released = true;
1706 ccc_inode_lsm_put(inode, lsm);
1708 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1709 if (file_is_released) {
1710 rc = ll_layout_restore(inode, 0, attr->ia_size);
1714 file_is_released = false;
1715 ll_layout_refresh(inode, &gen);
1718 /* If we are changing file size, file content is
1719 * modified, flag it. */
1720 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1721 spin_lock(&lli->lli_lock);
1722 lli->lli_flags |= LLIF_DATA_MODIFIED;
1723 spin_unlock(&lli->lli_lock);
1724 op_data->op_bias |= MDS_DATA_MODIFIED;
1728 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1730 /* Open epoch for truncate. */
1731 if (exp_connect_som(ll_i2mdexp(inode)) && !hsm_import &&
1732 (attr->ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
1733 op_data->op_flags = MF_EPOCH_OPEN;
1735 rc = ll_md_setattr(dentry, op_data, &mod);
1739 /* RPC to MDT is sent, cancel data modification flag */
1740 if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) {
1741 spin_lock(&lli->lli_lock);
1742 lli->lli_flags &= ~LLIF_DATA_MODIFIED;
1743 spin_unlock(&lli->lli_lock);
1746 ll_ioepoch_open(lli, op_data->op_ioepoch);
1747 if (!S_ISREG(inode->i_mode) || file_is_released)
1750 if (attr->ia_valid & (ATTR_SIZE |
1751 ATTR_ATIME | ATTR_ATIME_SET |
1752 ATTR_MTIME | ATTR_MTIME_SET)) {
1753 /* For truncate and utimes sending attributes to OSTs, setting
1754 * mtime/atime to the past will be performed under PW [0:EOF]
1755 * extent lock (new_size:EOF for truncate). It may seem
1756 * excessive to send mtime/atime updates to OSTs when not
1757 * setting times to past, but it is necessary due to possible
1758 * time de-synchronization between MDT inode and OST objects */
1759 if (attr->ia_valid & ATTR_SIZE)
1760 down_write(&lli->lli_trunc_sem);
1761 rc = ll_setattr_ost(inode, attr);
1762 if (attr->ia_valid & ATTR_SIZE)
1763 up_write(&lli->lli_trunc_sem);
1768 if (op_data->op_ioepoch) {
1769 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1773 ll_finish_md_op_data(op_data);
1775 if (!S_ISDIR(inode->i_mode)) {
1776 mutex_lock(&inode->i_mutex);
1777 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1778 inode_dio_wait(inode);
1781 ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
1782 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1787 int ll_setattr(struct dentry *de, struct iattr *attr)
1789 int mode = de->d_inode->i_mode;
1791 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1792 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1793 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1795 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1796 (ATTR_SIZE|ATTR_MODE)) &&
1797 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1798 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1799 !(attr->ia_mode & S_ISGID))))
1800 attr->ia_valid |= ATTR_FORCE;
1802 if ((attr->ia_valid & ATTR_MODE) &&
1804 !(attr->ia_mode & S_ISUID) &&
1805 !(attr->ia_valid & ATTR_KILL_SUID))
1806 attr->ia_valid |= ATTR_KILL_SUID;
1808 if ((attr->ia_valid & ATTR_MODE) &&
1809 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1810 !(attr->ia_mode & S_ISGID) &&
1811 !(attr->ia_valid & ATTR_KILL_SGID))
1812 attr->ia_valid |= ATTR_KILL_SGID;
1814 return ll_setattr_raw(de, attr, false);
1817 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1818 __u64 max_age, __u32 flags)
1820 struct ll_sb_info *sbi = ll_s2sbi(sb);
1821 struct obd_statfs obd_osfs;
1825 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1827 CERROR("md_statfs fails: rc = %d\n", rc);
1831 osfs->os_type = sb->s_magic;
1833 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1834 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1836 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1837 flags |= OBD_STATFS_NODELAY;
1839 rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1841 CERROR("obd_statfs fails: rc = %d\n", rc);
1845 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1846 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1849 osfs->os_bsize = obd_osfs.os_bsize;
1850 osfs->os_blocks = obd_osfs.os_blocks;
1851 osfs->os_bfree = obd_osfs.os_bfree;
1852 osfs->os_bavail = obd_osfs.os_bavail;
1854 /* If we don't have as many objects free on the OST as inodes
1855 * on the MDS, we reduce the total number of inodes to
1856 * compensate, so that the "inodes in use" number is correct.
1858 if (obd_osfs.os_ffree < osfs->os_ffree) {
1859 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1861 osfs->os_ffree = obd_osfs.os_ffree;
1866 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1868 struct super_block *sb = de->d_sb;
1869 struct obd_statfs osfs;
1870 __u64 fsid = huge_encode_dev(sb->s_dev);
1873 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1874 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1876 /* Some amount of caching on the client is allowed */
1877 rc = ll_statfs_internal(sb, &osfs,
1878 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1883 statfs_unpack(sfs, &osfs);
1885 /* We need to downshift for all 32-bit kernels, because we can't
1886 * tell if the kernel is being called via sys_statfs64() or not.
1887 * Stop before overflowing f_bsize - in which case it is better
1888 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1889 if (sizeof(long) < 8) {
1890 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1893 osfs.os_blocks >>= 1;
1894 osfs.os_bfree >>= 1;
1895 osfs.os_bavail >>= 1;
1899 sfs->f_blocks = osfs.os_blocks;
1900 sfs->f_bfree = osfs.os_bfree;
1901 sfs->f_bavail = osfs.os_bavail;
1902 sfs->f_fsid.val[0] = (__u32)fsid;
1903 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
1907 void ll_inode_size_lock(struct inode *inode)
1909 struct ll_inode_info *lli;
1911 LASSERT(!S_ISDIR(inode->i_mode));
1913 lli = ll_i2info(inode);
1914 mutex_lock(&lli->lli_size_mutex);
1917 void ll_inode_size_unlock(struct inode *inode)
1919 struct ll_inode_info *lli;
1921 lli = ll_i2info(inode);
1922 mutex_unlock(&lli->lli_size_mutex);
1925 int ll_update_inode(struct inode *inode, struct lustre_md *md)
1927 struct ll_inode_info *lli = ll_i2info(inode);
1928 struct mdt_body *body = md->body;
1929 struct lov_stripe_md *lsm = md->lsm;
1930 struct ll_sb_info *sbi = ll_i2sbi(inode);
1932 LASSERT((lsm != NULL) == ((body->mbo_valid & OBD_MD_FLEASIZE) != 0));
1934 if (!lli->lli_has_smd &&
1935 !(sbi->ll_flags & LL_SBI_LAYOUT_LOCK))
1936 cl_file_inode_init(inode, md);
1938 lli->lli_maxbytes = lsm->lsm_maxbytes;
1939 if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
1940 lli->lli_maxbytes = MAX_LFS_FILESIZE;
1943 if (S_ISDIR(inode->i_mode)) {
1946 rc = ll_update_lsm_md(inode, md);
1951 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1952 if (body->mbo_valid & OBD_MD_FLRMTPERM)
1953 ll_update_remote_perm(inode, md->remote_perm);
1955 #ifdef CONFIG_FS_POSIX_ACL
1956 else if (body->mbo_valid & OBD_MD_FLACL) {
1957 spin_lock(&lli->lli_lock);
1958 if (lli->lli_posix_acl)
1959 posix_acl_release(lli->lli_posix_acl);
1960 lli->lli_posix_acl = md->posix_acl;
1961 spin_unlock(&lli->lli_lock);
1964 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
1965 sbi->ll_flags & LL_SBI_32BIT_API);
1966 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
1968 if (body->mbo_valid & OBD_MD_FLATIME) {
1969 if (body->mbo_atime > LTIME_S(inode->i_atime))
1970 LTIME_S(inode->i_atime) = body->mbo_atime;
1971 lli->lli_lvb.lvb_atime = body->mbo_atime;
1974 if (body->mbo_valid & OBD_MD_FLMTIME) {
1975 if (body->mbo_mtime > LTIME_S(inode->i_mtime)) {
1976 CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1977 "to "LPU64"\n", inode->i_ino,
1978 LTIME_S(inode->i_mtime), body->mbo_mtime);
1979 LTIME_S(inode->i_mtime) = body->mbo_mtime;
1981 lli->lli_lvb.lvb_mtime = body->mbo_mtime;
1984 if (body->mbo_valid & OBD_MD_FLCTIME) {
1985 if (body->mbo_ctime > LTIME_S(inode->i_ctime))
1986 LTIME_S(inode->i_ctime) = body->mbo_ctime;
1987 lli->lli_lvb.lvb_ctime = body->mbo_ctime;
1990 if (body->mbo_valid & OBD_MD_FLMODE)
1991 inode->i_mode = (inode->i_mode & S_IFMT) |
1992 (body->mbo_mode & ~S_IFMT);
1994 if (body->mbo_valid & OBD_MD_FLTYPE)
1995 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1996 (body->mbo_mode & S_IFMT);
1998 LASSERT(inode->i_mode != 0);
1999 if (S_ISREG(inode->i_mode))
2000 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
2001 LL_MAX_BLKSIZE_BITS);
2003 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
2005 if (body->mbo_valid & OBD_MD_FLUID)
2006 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
2007 if (body->mbo_valid & OBD_MD_FLGID)
2008 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
2009 if (body->mbo_valid & OBD_MD_FLFLAGS)
2010 inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
2011 if (body->mbo_valid & OBD_MD_FLNLINK)
2012 set_nlink(inode, body->mbo_nlink);
2013 if (body->mbo_valid & OBD_MD_FLRDEV)
2014 inode->i_rdev = old_decode_dev(body->mbo_rdev);
2016 if (body->mbo_valid & OBD_MD_FLID) {
2017 /* FID shouldn't be changed! */
2018 if (fid_is_sane(&lli->lli_fid)) {
2019 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
2020 "Trying to change FID "DFID
2021 " to the "DFID", inode "DFID"(%p)\n",
2022 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
2023 PFID(ll_inode2fid(inode)), inode);
2025 lli->lli_fid = body->mbo_fid1;
2029 LASSERT(fid_seq(&lli->lli_fid) != 0);
2031 if (body->mbo_valid & OBD_MD_FLSIZE) {
2032 if (exp_connect_som(ll_i2mdexp(inode)) &&
2033 S_ISREG(inode->i_mode)) {
2034 struct lustre_handle lockh;
2037 /* As it is possible a blocking ast has been processed
2038 * by this time, we need to check there is an UPDATE
2039 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
2041 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
2042 &lockh, LDLM_FL_CBPENDING,
2046 if (lli->lli_flags & (LLIF_DONE_WRITING |
2047 LLIF_EPOCH_PENDING |
2049 CERROR("%s: inode "DFID" flags %u still"
2050 " has size authority! do not "
2051 "trust the size from MDS\n",
2052 sbi->ll_md_exp->exp_obd->obd_name,
2053 PFID(ll_inode2fid(inode)),
2056 /* Use old size assignment to avoid
2057 * deadlock bz14138 & bz14326 */
2058 i_size_write(inode, body->mbo_size);
2059 spin_lock(&lli->lli_lock);
2060 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
2061 spin_unlock(&lli->lli_lock);
2063 ldlm_lock_decref(&lockh, mode);
2066 /* Use old size assignment to avoid
2067 * deadlock bz14138 & bz14326 */
2068 i_size_write(inode, body->mbo_size);
2071 "inode="DFID", updating i_size %llu\n",
2072 PFID(ll_inode2fid(inode)),
2073 (unsigned long long)body->mbo_size);
2076 if (body->mbo_valid & OBD_MD_FLBLOCKS)
2077 inode->i_blocks = body->mbo_blocks;
2080 if (body->mbo_valid & OBD_MD_FLMDSCAPA) {
2081 LASSERT(md->mds_capa);
2082 ll_add_capa(inode, md->mds_capa);
2085 if (body->mbo_valid & OBD_MD_FLOSSCAPA) {
2086 LASSERT(md->oss_capa);
2087 ll_add_capa(inode, md->oss_capa);
2090 if (body->mbo_valid & OBD_MD_TSTATE) {
2091 if (body->mbo_t_state & MS_RESTORE)
2092 lli->lli_flags |= LLIF_FILE_RESTORING;
2098 int ll_read_inode2(struct inode *inode, void *opaque)
2100 struct lustre_md *md = opaque;
2101 struct ll_inode_info *lli = ll_i2info(inode);
2105 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2106 PFID(&lli->lli_fid), inode);
2108 LASSERT(!lli->lli_has_smd);
2110 /* Core attributes from the MDS first. This is a new inode, and
2111 * the VFS doesn't zero times in the core inode so we have to do
2112 * it ourselves. They will be overwritten by either MDS or OST
2113 * attributes - we just need to make sure they aren't newer. */
2114 LTIME_S(inode->i_mtime) = 0;
2115 LTIME_S(inode->i_atime) = 0;
2116 LTIME_S(inode->i_ctime) = 0;
2118 rc = ll_update_inode(inode, md);
2122 /* OIDEBUG(inode); */
2124 /* initializing backing dev info. */
2125 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2128 if (S_ISREG(inode->i_mode)) {
2129 struct ll_sb_info *sbi = ll_i2sbi(inode);
2130 inode->i_op = &ll_file_inode_operations;
2131 inode->i_fop = sbi->ll_fop;
2132 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2134 } else if (S_ISDIR(inode->i_mode)) {
2135 inode->i_op = &ll_dir_inode_operations;
2136 inode->i_fop = &ll_dir_operations;
2138 } else if (S_ISLNK(inode->i_mode)) {
2139 inode->i_op = &ll_fast_symlink_inode_operations;
2142 inode->i_op = &ll_special_inode_operations;
2144 init_special_inode(inode, inode->i_mode,
2153 void ll_delete_inode(struct inode *inode)
2155 struct cl_inode_info *lli = cl_i2info(inode);
2158 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
2159 /* discard all dirty pages before truncating them, required by
2160 * osc_extent implementation at LU-1030. */
2161 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF,
2162 CL_FSYNC_DISCARD, 1);
2164 truncate_inode_pages(&inode->i_data, 0);
2166 /* Workaround for LU-118 */
2167 if (inode->i_data.nrpages) {
2168 spin_lock_irq(&inode->i_data.tree_lock);
2169 spin_unlock_irq(&inode->i_data.tree_lock);
2170 LASSERTF(inode->i_data.nrpages == 0,
2171 "inode="DFID"(%p) nrpages=%lu, see "
2172 "http://jira.whamcloud.com/browse/LU-118\n",
2173 PFID(ll_inode2fid(inode)), inode,
2174 inode->i_data.nrpages);
2176 /* Workaround end */
2178 #ifdef HAVE_SBOPS_EVICT_INODE
2179 ll_clear_inode(inode);
2186 int ll_iocontrol(struct inode *inode, struct file *file,
2187 unsigned int cmd, unsigned long arg)
2189 struct ll_sb_info *sbi = ll_i2sbi(inode);
2190 struct ptlrpc_request *req = NULL;
2195 case FSFILT_IOC_GETFLAGS: {
2196 struct mdt_body *body;
2197 struct md_op_data *op_data;
2199 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2200 0, 0, LUSTRE_OPC_ANY,
2202 if (IS_ERR(op_data))
2203 RETURN(PTR_ERR(op_data));
2205 op_data->op_valid = OBD_MD_FLFLAGS;
2206 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2207 ll_finish_md_op_data(op_data);
2209 CERROR("%s: failure inode "DFID": rc = %d\n",
2210 sbi->ll_md_exp->exp_obd->obd_name,
2211 PFID(ll_inode2fid(inode)), rc);
2215 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2217 flags = body->mbo_flags;
2219 ptlrpc_req_finished(req);
2221 RETURN(put_user(flags, (int *)arg));
2223 case FSFILT_IOC_SETFLAGS: {
2224 struct lov_stripe_md *lsm;
2225 struct obd_info oinfo = { { { 0 } } };
2226 struct md_op_data *op_data;
2228 if (get_user(flags, (int *)arg))
2231 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2232 LUSTRE_OPC_ANY, NULL);
2233 if (IS_ERR(op_data))
2234 RETURN(PTR_ERR(op_data));
2236 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
2237 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
2238 rc = md_setattr(sbi->ll_md_exp, op_data,
2239 NULL, 0, NULL, 0, &req, NULL);
2240 ll_finish_md_op_data(op_data);
2241 ptlrpc_req_finished(req);
2245 inode->i_flags = ll_ext_to_inode_flags(flags);
2247 lsm = ccc_inode_lsm_get(inode);
2248 if (!lsm_has_objects(lsm)) {
2249 ccc_inode_lsm_put(inode, lsm);
2253 OBDO_ALLOC(oinfo.oi_oa);
2255 ccc_inode_lsm_put(inode, lsm);
2259 oinfo.oi_oa->o_oi = lsm->lsm_oi;
2260 oinfo.oi_oa->o_flags = flags;
2261 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
2263 oinfo.oi_capa = ll_mdscapa_get(inode);
2264 obdo_set_parent_fid(oinfo.oi_oa, &ll_i2info(inode)->lli_fid);
2265 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
2266 capa_put(oinfo.oi_capa);
2267 OBDO_FREE(oinfo.oi_oa);
2268 ccc_inode_lsm_put(inode, lsm);
2270 if (rc && rc != -EPERM && rc != -EACCES)
2271 CERROR("osc_setattr_async fails: rc = %d\n", rc);
2282 int ll_flush_ctx(struct inode *inode)
2284 struct ll_sb_info *sbi = ll_i2sbi(inode);
2286 CDEBUG(D_SEC, "flush context for user %d\n",
2287 from_kuid(&init_user_ns, current_uid()));
2289 obd_set_info_async(NULL, sbi->ll_md_exp,
2290 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2292 obd_set_info_async(NULL, sbi->ll_dt_exp,
2293 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2298 /* umount -f client means force down, don't save state */
2299 void ll_umount_begin(struct super_block *sb)
2301 struct ll_sb_info *sbi = ll_s2sbi(sb);
2302 struct obd_device *obd;
2303 struct obd_ioctl_data *ioc_data;
2306 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2307 sb->s_count, atomic_read(&sb->s_active));
2309 obd = class_exp2obd(sbi->ll_md_exp);
2311 CERROR("Invalid MDC connection handle "LPX64"\n",
2312 sbi->ll_md_exp->exp_handle.h_cookie);
2318 obd = class_exp2obd(sbi->ll_dt_exp);
2320 CERROR("Invalid LOV connection handle "LPX64"\n",
2321 sbi->ll_dt_exp->exp_handle.h_cookie);
2327 OBD_ALLOC_PTR(ioc_data);
2329 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2330 sizeof *ioc_data, ioc_data, NULL);
2332 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2333 sizeof *ioc_data, ioc_data, NULL);
2335 OBD_FREE_PTR(ioc_data);
2338 /* Really, we'd like to wait until there are no requests outstanding,
2339 * and then continue. For now, we just invalidate the requests,
2340 * schedule() and sleep one second if needed, and hope.
2346 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2348 struct ll_sb_info *sbi = ll_s2sbi(sb);
2349 char *profilenm = get_profile_name(sb);
2353 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2354 read_only = *flags & MS_RDONLY;
2355 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2356 sizeof(KEY_READ_ONLY),
2357 KEY_READ_ONLY, sizeof(read_only),
2360 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2361 profilenm, read_only ?
2362 "read-only" : "read-write", err);
2367 sb->s_flags |= MS_RDONLY;
2369 sb->s_flags &= ~MS_RDONLY;
2371 if (sbi->ll_flags & LL_SBI_VERBOSE)
2372 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2373 read_only ? "read-only" : "read-write");
2378 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2379 struct super_block *sb, struct lookup_intent *it)
2381 struct ll_sb_info *sbi = NULL;
2382 struct lustre_md md = { 0 };
2386 LASSERT(*inode || sb);
2387 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2388 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2389 sbi->ll_md_exp, &md);
2394 rc = ll_update_inode(*inode, &md);
2398 LASSERT(sb != NULL);
2401 * At this point server returns to client's same fid as client
2402 * generated for creating. So using ->fid1 is okay here.
2404 LASSERT(fid_is_sane(&md.body->mbo_fid1));
2406 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2407 sbi->ll_flags & LL_SBI_32BIT_API),
2409 if (IS_ERR(*inode)) {
2410 #ifdef CONFIG_FS_POSIX_ACL
2412 posix_acl_release(md.posix_acl);
2413 md.posix_acl = NULL;
2416 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2418 CERROR("new_inode -fatal: rc %d\n", rc);
2423 /* Handling piggyback layout lock.
2424 * Layout lock can be piggybacked by getattr and open request.
2425 * The lsm can be applied to inode only if it comes with a layout lock
2426 * otherwise correct layout may be overwritten, for example:
2427 * 1. proc1: mdt returns a lsm but not granting layout
2428 * 2. layout was changed by another client
2429 * 3. proc2: refresh layout and layout lock granted
2430 * 4. proc1: to apply a stale layout */
2431 if (it != NULL && it->d.lustre.it_lock_mode != 0) {
2432 struct lustre_handle lockh;
2433 struct ldlm_lock *lock;
2435 lockh.cookie = it->d.lustre.it_lock_handle;
2436 lock = ldlm_handle2lock(&lockh);
2437 LASSERT(lock != NULL);
2438 if (ldlm_has_layout(lock)) {
2439 struct cl_object_conf conf;
2441 memset(&conf, 0, sizeof(conf));
2442 conf.coc_opc = OBJECT_CONF_SET;
2443 conf.coc_inode = *inode;
2444 conf.coc_lock = lock;
2445 conf.u.coc_md = &md;
2446 (void)ll_layout_conf(*inode, &conf);
2448 LDLM_LOCK_PUT(lock);
2453 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2454 md_free_lustre_md(sbi->ll_md_exp, &md);
2458 int ll_obd_statfs(struct inode *inode, void *arg)
2460 struct ll_sb_info *sbi = NULL;
2461 struct obd_export *exp;
2463 struct obd_ioctl_data *data = NULL;
2468 if (!inode || !(sbi = ll_i2sbi(inode)))
2469 GOTO(out_statfs, rc = -EINVAL);
2471 rc = obd_ioctl_getdata(&buf, &len, arg);
2473 GOTO(out_statfs, rc);
2476 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2477 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2478 GOTO(out_statfs, rc = -EINVAL);
2480 if (data->ioc_inllen1 != sizeof(__u32) ||
2481 data->ioc_inllen2 != sizeof(__u32) ||
2482 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2483 data->ioc_plen2 != sizeof(struct obd_uuid))
2484 GOTO(out_statfs, rc = -EINVAL);
2486 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2487 if (type & LL_STATFS_LMV)
2488 exp = sbi->ll_md_exp;
2489 else if (type & LL_STATFS_LOV)
2490 exp = sbi->ll_dt_exp;
2492 GOTO(out_statfs, rc = -ENODEV);
2494 flags = (type & LL_STATFS_NODELAY) ? OBD_STATFS_NODELAY : 0;
2495 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, &flags);
2497 GOTO(out_statfs, rc);
2500 obd_ioctl_freedata(buf, len);
2504 int ll_process_config(struct lustre_cfg *lcfg)
2506 struct super_block *sb;
2511 /* The instance name contains the sb: lustre-client-aacfe000 */
2512 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2513 if (!ptr || !*(++ptr))
2515 if (sscanf(ptr, "%lx", &x) != 1)
2517 sb = (struct super_block *)x;
2518 /* This better be a real Lustre superblock! */
2519 LASSERT(s2lsi(sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2521 /* Note we have not called client_common_fill_super yet, so
2522 proc fns must be able to handle that! */
2523 rc = class_process_proc_seq_param(PARAM_LLITE, lprocfs_llite_obd_vars,
2530 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2531 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2532 struct inode *i1, struct inode *i2,
2533 const char *name, int namelen,
2534 int mode, __u32 opc, void *data)
2536 LASSERT(i1 != NULL);
2539 /* Do not reuse namelen for something else. */
2541 return ERR_PTR(-EINVAL);
2543 if (namelen > ll_i2sbi(i1)->ll_namelen)
2544 return ERR_PTR(-ENAMETOOLONG);
2546 if (!lu_name_is_valid_2(name, namelen))
2547 return ERR_PTR(-EINVAL);
2550 if (op_data == NULL)
2551 OBD_ALLOC_PTR(op_data);
2553 if (op_data == NULL)
2554 return ERR_PTR(-ENOMEM);
2556 ll_i2gids(op_data->op_suppgids, i1, i2);
2557 op_data->op_fid1 = *ll_inode2fid(i1);
2558 op_data->op_capa1 = ll_mdscapa_get(i1);
2559 if (S_ISDIR(i1->i_mode))
2560 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2563 op_data->op_fid2 = *ll_inode2fid(i2);
2564 op_data->op_capa2 = ll_mdscapa_get(i2);
2565 if (S_ISDIR(i2->i_mode))
2566 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2568 fid_zero(&op_data->op_fid2);
2569 op_data->op_capa2 = NULL;
2572 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2573 op_data->op_cli_flags |= CLI_HASH64;
2575 if (ll_need_32bit_api(ll_i2sbi(i1)))
2576 op_data->op_cli_flags |= CLI_API32;
2578 op_data->op_name = name;
2579 op_data->op_namelen = namelen;
2580 op_data->op_mode = mode;
2581 op_data->op_mod_time = cfs_time_current_sec();
2582 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2583 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2584 op_data->op_cap = cfs_curproc_cap_pack();
2585 op_data->op_bias = 0;
2586 op_data->op_cli_flags = 0;
2587 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2588 filename_is_volatile(name, namelen, NULL))
2589 op_data->op_bias |= MDS_CREATE_VOLATILE;
2590 op_data->op_mds = 0;
2591 op_data->op_data = data;
2593 /* If the file is being opened after mknod() (normally due to NFS)
2594 * try to use the default stripe data from parent directory for
2595 * allocating OST objects. Try to pass the parent FID to MDS. */
2596 if (opc == LUSTRE_OPC_CREATE && i1 == i2 && S_ISREG(i2->i_mode) &&
2597 !ll_i2info(i2)->lli_has_smd) {
2598 struct ll_inode_info *lli = ll_i2info(i2);
2600 spin_lock(&lli->lli_lock);
2601 if (likely(!lli->lli_has_smd && !fid_is_zero(&lli->lli_pfid)))
2602 op_data->op_fid1 = lli->lli_pfid;
2603 spin_unlock(&lli->lli_lock);
2604 /** We ignore parent's capability temporary. */
2607 /* When called by ll_setattr_raw, file is i1. */
2608 if (LLIF_DATA_MODIFIED & ll_i2info(i1)->lli_flags)
2609 op_data->op_bias |= MDS_DATA_MODIFIED;
2614 void ll_finish_md_op_data(struct md_op_data *op_data)
2616 capa_put(op_data->op_capa1);
2617 capa_put(op_data->op_capa2);
2618 OBD_FREE_PTR(op_data);
2621 #ifdef HAVE_SUPEROPS_USE_DENTRY
2622 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2624 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2627 struct ll_sb_info *sbi;
2629 #ifdef HAVE_SUPEROPS_USE_DENTRY
2630 LASSERT((seq != NULL) && (dentry != NULL));
2631 sbi = ll_s2sbi(dentry->d_sb);
2633 LASSERT((seq != NULL) && (vfs != NULL));
2634 sbi = ll_s2sbi(vfs->mnt_sb);
2637 if (sbi->ll_flags & LL_SBI_NOLCK)
2638 seq_puts(seq, ",nolock");
2640 if (sbi->ll_flags & LL_SBI_FLOCK)
2641 seq_puts(seq, ",flock");
2643 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2644 seq_puts(seq, ",localflock");
2646 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2647 seq_puts(seq, ",user_xattr");
2649 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2650 seq_puts(seq, ",lazystatfs");
2652 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2653 seq_puts(seq, ",user_fid2path");
2659 * Get obd name by cmd, and copy out to user space
2661 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2663 struct ll_sb_info *sbi = ll_i2sbi(inode);
2664 struct obd_device *obd;
2667 if (cmd == OBD_IOC_GETDTNAME)
2668 obd = class_exp2obd(sbi->ll_dt_exp);
2669 else if (cmd == OBD_IOC_GETMDNAME)
2670 obd = class_exp2obd(sbi->ll_md_exp);
2677 if (copy_to_user((void *)arg, obd->obd_name,
2678 strlen(obd->obd_name) + 1))
2685 * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
2686 * fsname will be returned in this buffer; otherwise, a static buffer will be
2687 * used to store the fsname and returned to caller.
2689 char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
2691 static char fsname_static[MTI_NAME_MAXLEN];
2692 struct lustre_sb_info *lsi = s2lsi(sb);
2697 /* this means the caller wants to use static buffer
2698 * and it doesn't care about race. Usually this is
2699 * in error reporting path */
2700 buf = fsname_static;
2701 buflen = sizeof(fsname_static);
2704 len = strlen(lsi->lsi_lmd->lmd_profile);
2705 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
2706 if (ptr && (strcmp(ptr, "-client") == 0))
2709 if (unlikely(len >= buflen))
2711 strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
2717 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2724 p.mnt = current->fs->root.mnt;
2726 path = d_path(&p, buf, bufsize);
2731 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2733 char *buf, *path = NULL;
2734 struct dentry *dentry = NULL;
2735 struct ccc_object *obj = cl_inode2ccc(page->mapping->host);
2737 /* this can be called inside spin lock so use GFP_ATOMIC. */
2738 buf = (char *)__get_free_page(GFP_ATOMIC);
2740 dentry = d_find_alias(page->mapping->host);
2742 path = ll_d_path(dentry, buf, PAGE_SIZE);
2746 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2747 "(rc %d)\n", ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
2748 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2749 PFID(&obj->cob_header.coh_lu.loh_fid),
2750 (path && !IS_ERR(path)) ? path : "", ioret);
2756 free_page((unsigned long)buf);
2760 * Compute llite root squash state after a change of root squash
2761 * configuration setting or add/remove of a lnet nid
2763 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2765 struct root_squash_info *squash = &sbi->ll_squash;
2768 lnet_process_id_t id;
2770 /* Update norootsquash flag */
2771 down_write(&squash->rsi_sem);
2772 if (list_empty(&squash->rsi_nosquash_nids))
2773 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2775 /* Do not apply root squash as soon as one of our NIDs is
2776 * in the nosquash_nids list */
2779 while (LNetGetId(i++, &id) != -ENOENT) {
2780 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2782 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2788 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2790 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2792 up_write(&squash->rsi_sem);