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 |
217 OBD_CONNECT_OPEN_BY_FID;
219 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
220 data->ocd_connect_flags |= OBD_CONNECT_SOM;
222 #ifdef HAVE_LRU_RESIZE_SUPPORT
223 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
224 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
226 #ifdef CONFIG_FS_POSIX_ACL
227 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
230 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
231 /* flag mdc connection as lightweight, only used for test
232 * purpose, use with care */
233 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
235 data->ocd_ibits_known = MDS_INODELOCK_FULL;
236 data->ocd_version = LUSTRE_VERSION_CODE;
238 if (sb->s_flags & MS_RDONLY)
239 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
240 if (sbi->ll_flags & LL_SBI_USER_XATTR)
241 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
243 #ifdef HAVE_MS_FLOCK_LOCK
244 /* force vfs to use lustre handler for flock() calls - bug 10743 */
245 sb->s_flags |= MS_FLOCK_LOCK;
247 #ifdef MS_HAS_NEW_AOPS
248 sb->s_flags |= MS_HAS_NEW_AOPS;
251 if (sbi->ll_flags & LL_SBI_FLOCK)
252 sbi->ll_fop = &ll_file_operations_flock;
253 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
254 sbi->ll_fop = &ll_file_operations;
256 sbi->ll_fop = &ll_file_operations_noflock;
259 data->ocd_connect_flags |= OBD_CONNECT_REAL;
260 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
261 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
263 data->ocd_brw_size = MD_MAX_BRW_SIZE;
265 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
267 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
268 "recovery, of which this client is not a "
269 "part. Please wait for recovery to complete,"
270 " abort, or time out.\n", md);
273 CERROR("cannot connect to %s: rc = %d\n", md, err);
277 sbi->ll_md_exp->exp_connect_data = *data;
279 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
280 LUSTRE_SEQ_METADATA);
282 CERROR("%s: Can't init metadata layer FID infrastructure, "
283 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
287 /* For mount, we only need fs info from MDT0, and also in DNE, it
288 * can make sure the client can be mounted as long as MDT0 is
290 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
291 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
292 OBD_STATFS_FOR_MDT0);
294 GOTO(out_md_fid, err);
296 /* This needs to be after statfs to ensure connect has finished.
297 * Note that "data" does NOT contain the valid connect reply.
298 * If connecting to a 1.8 server there will be no LMV device, so
299 * we can access the MDC export directly and exp_connect_flags will
300 * be non-zero, but if accessing an upgraded 2.1 server it will
301 * have the correct flags filled in.
302 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
303 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
304 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
305 valid != CLIENT_CONNECT_MDT_REQD) {
308 OBD_ALLOC_WAIT(buf, PAGE_CACHE_SIZE);
309 obd_connect_flags2str(buf, PAGE_CACHE_SIZE,
310 valid ^ CLIENT_CONNECT_MDT_REQD, ",");
311 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
312 "feature(s) needed for correct operation "
313 "of this client (%s). Please upgrade "
314 "server or downgrade client.\n",
315 sbi->ll_md_exp->exp_obd->obd_name, buf);
316 OBD_FREE(buf, PAGE_CACHE_SIZE);
317 GOTO(out_md_fid, err = -EPROTO);
320 size = sizeof(*data);
321 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
322 KEY_CONN_DATA, &size, data, NULL);
324 CERROR("%s: Get connect data failed: rc = %d\n",
325 sbi->ll_md_exp->exp_obd->obd_name, err);
326 GOTO(out_md_fid, err);
329 LASSERT(osfs->os_bsize);
330 sb->s_blocksize = osfs->os_bsize;
331 sb->s_blocksize_bits = log2(osfs->os_bsize);
332 sb->s_magic = LL_SUPER_MAGIC;
333 sb->s_maxbytes = MAX_LFS_FILESIZE;
334 sbi->ll_namelen = osfs->os_namelen;
335 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
337 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
338 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
339 LCONSOLE_INFO("Disabling user_xattr feature because "
340 "it is not supported on the server\n");
341 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
344 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
346 sb->s_flags |= MS_POSIXACL;
348 sbi->ll_flags |= LL_SBI_ACL;
350 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
352 sb->s_flags &= ~MS_POSIXACL;
354 sbi->ll_flags &= ~LL_SBI_ACL;
357 if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
358 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
359 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
360 LCONSOLE_INFO("client is set as remote by default.\n");
363 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
364 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
365 LCONSOLE_INFO("client claims to be remote, but server "
366 "rejected, forced to be local.\n");
370 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
371 LCONSOLE_INFO("client enabled MDS capability!\n");
372 sbi->ll_flags |= LL_SBI_MDS_CAPA;
375 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
376 LCONSOLE_INFO("client enabled OSS capability!\n");
377 sbi->ll_flags |= LL_SBI_OSS_CAPA;
380 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
381 sbi->ll_flags |= LL_SBI_64BIT_HASH;
383 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
384 sbi->ll_md_brw_pages = data->ocd_brw_size >> PAGE_CACHE_SHIFT;
386 sbi->ll_md_brw_pages = 1;
388 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
389 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
391 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
392 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
393 LCONSOLE_INFO("%s: disabling xattr cache due to "
394 "unknown maximum xattr size.\n", dt);
396 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
397 sbi->ll_xattr_cache_enabled = 1;
401 obd = class_name2obd(dt);
403 CERROR("DT %s: not setup or attached\n", dt);
404 GOTO(out_md_fid, err = -ENODEV);
407 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
408 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
409 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
410 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
411 OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
412 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
413 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
414 OBD_CONNECT_MAXBYTES |
415 OBD_CONNECT_EINPROGRESS |
416 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
417 OBD_CONNECT_LAYOUTLOCK |
418 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK;
420 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
421 data->ocd_connect_flags |= OBD_CONNECT_SOM;
423 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
424 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
425 * disabled by default, because it can still be enabled on the
426 * fly via /proc. As a consequence, we still need to come to an
427 * agreement on the supported algorithms at connect time */
428 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
430 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
431 data->ocd_cksum_types = OBD_CKSUM_ADLER;
433 data->ocd_cksum_types = cksum_types_supported_client();
436 #ifdef HAVE_LRU_RESIZE_SUPPORT
437 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
439 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
440 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
442 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
443 "ocd_grant: %d\n", data->ocd_connect_flags,
444 data->ocd_version, data->ocd_grant);
446 obd->obd_upcall.onu_owner = &sbi->ll_lco;
447 obd->obd_upcall.onu_upcall = cl_ocd_update;
449 data->ocd_brw_size = DT_MAX_BRW_SIZE;
451 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data,
454 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
455 "recovery, of which this client is not a "
456 "part. Please wait for recovery to "
457 "complete, abort, or time out.\n", dt);
460 CERROR("%s: Cannot connect to %s: rc = %d\n",
461 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
465 sbi->ll_dt_exp->exp_connect_data = *data;
467 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
468 LUSTRE_SEQ_METADATA);
470 CERROR("%s: Can't init data layer FID infrastructure, "
471 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
475 mutex_lock(&sbi->ll_lco.lco_lock);
476 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
477 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
478 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
479 mutex_unlock(&sbi->ll_lco.lco_lock);
481 fid_zero(&sbi->ll_root_fid);
482 err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
484 CERROR("cannot mds_connect: rc = %d\n", err);
485 GOTO(out_lock_cn_cb, err);
487 if (!fid_is_sane(&sbi->ll_root_fid)) {
488 CERROR("%s: Invalid root fid "DFID" during mount\n",
489 sbi->ll_md_exp->exp_obd->obd_name,
490 PFID(&sbi->ll_root_fid));
491 GOTO(out_lock_cn_cb, err = -EINVAL);
493 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
495 sb->s_op = &lustre_super_operations;
496 #if THREAD_SIZE >= 8192 /*b=17630*/
497 sb->s_export_op = &lustre_export_operations;
501 * XXX: move this to after cbd setup? */
502 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA |
504 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
505 valid |= OBD_MD_FLRMTPERM;
506 else if (sbi->ll_flags & LL_SBI_ACL)
507 valid |= OBD_MD_FLACL;
509 OBD_ALLOC_PTR(op_data);
511 GOTO(out_lock_cn_cb, err = -ENOMEM);
513 op_data->op_fid1 = sbi->ll_root_fid;
514 op_data->op_mode = 0;
515 op_data->op_capa1 = oc;
516 op_data->op_valid = valid;
518 err = md_getattr(sbi->ll_md_exp, op_data, &request);
521 OBD_FREE_PTR(op_data);
523 CERROR("%s: md_getattr failed for root: rc = %d\n",
524 sbi->ll_md_exp->exp_obd->obd_name, err);
525 GOTO(out_lock_cn_cb, err);
528 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
529 sbi->ll_md_exp, &lmd);
531 CERROR("failed to understand root inode md: rc = %d\n", err);
532 ptlrpc_req_finished(request);
533 GOTO(out_lock_cn_cb, err);
536 LASSERT(fid_is_sane(&sbi->ll_root_fid));
537 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
538 sbi->ll_flags & LL_SBI_32BIT_API),
540 md_free_lustre_md(sbi->ll_md_exp, &lmd);
541 ptlrpc_req_finished(request);
545 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
546 #ifdef CONFIG_FS_POSIX_ACL
548 posix_acl_release(lmd.posix_acl);
549 lmd.posix_acl = NULL;
552 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
554 CERROR("lustre_lite: bad iget4 for root\n");
558 err = ll_close_thread_start(&sbi->ll_lcq);
560 CERROR("cannot start close thread: rc %d\n", err);
564 #ifdef CONFIG_FS_POSIX_ACL
565 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
566 rct_init(&sbi->ll_rct);
567 et_init(&sbi->ll_et);
571 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
572 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
573 KEY_CHECKSUM, sizeof(checksum), &checksum,
577 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
578 KEY_CACHE_SET, sizeof(sbi->ll_cache),
579 &sbi->ll_cache, NULL);
581 sb->s_root = d_make_root(root);
582 if (sb->s_root == NULL) {
583 CERROR("%s: can't make root dentry\n",
584 ll_get_fsname(sb, NULL, 0));
585 GOTO(out_root, err = -ENOMEM);
587 #ifdef HAVE_DCACHE_LOCK
588 sb->s_root->d_op = &ll_d_ops;
591 sbi->ll_sdev_orig = sb->s_dev;
593 /* We set sb->s_dev equal on all lustre clients in order to support
594 * NFS export clustering. NFSD requires that the FSID be the same
596 /* s_dev is also used in lt_compare() to compare two fs, but that is
597 * only a node-local comparison. */
598 uuid = obd_get_uuid(sbi->ll_md_exp);
600 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
606 if (proc_lustre_fs_root != NULL) {
607 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
610 CERROR("%s: could not register mount in lprocfs: "
611 "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
621 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
623 obd_disconnect(sbi->ll_dt_exp);
624 sbi->ll_dt_exp = NULL;
625 /* Make sure all OScs are gone, since cl_cache is accessing sbi. */
626 obd_zombie_barrier();
628 obd_fid_fini(sbi->ll_md_exp->exp_obd);
630 obd_disconnect(sbi->ll_md_exp);
631 sbi->ll_md_exp = NULL;
640 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
644 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
646 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
647 KEY_MAX_EASIZE, &size, lmmsize, NULL);
649 CERROR("Get max mdsize error rc %d\n", rc);
654 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
659 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
660 KEY_DEFAULT_EASIZE, &size, lmmsize, NULL);
662 CERROR("Get default mdsize error rc %d\n", rc);
667 int ll_get_max_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
672 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_COOKIESIZE),
673 KEY_MAX_COOKIESIZE, &size, lmmsize, NULL);
675 CERROR("Get max cookiesize error rc %d\n", rc);
680 int ll_get_default_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
685 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_COOKIESIZE),
686 KEY_DEFAULT_COOKIESIZE, &size, lmmsize, NULL);
688 CERROR("Get default cookiesize error rc %d\n", rc);
693 static void ll_dump_inode(struct inode *inode)
695 struct ll_d_hlist_node *tmp;
696 int dentry_count = 0;
698 LASSERT(inode != NULL);
700 ll_d_hlist_for_each(tmp, &inode->i_dentry)
703 CERROR("%s: inode %p dump: dev=%s fid="DFID
704 " mode=%o count=%u, %d dentries\n",
705 ll_get_fsname(inode->i_sb, NULL, 0), inode,
706 ll_i2mdexp(inode)->exp_obd->obd_name, PFID(ll_inode2fid(inode)),
707 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
710 void lustre_dump_dentry(struct dentry *dentry, int recur)
712 struct list_head *tmp;
715 LASSERT(dentry != NULL);
717 list_for_each(tmp, &dentry->d_subdirs)
720 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
721 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
722 dentry->d_name.len, dentry->d_name.name,
723 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
724 dentry->d_parent, dentry->d_inode, d_count(dentry),
725 dentry->d_flags, dentry->d_fsdata, subdirs);
726 if (dentry->d_inode != NULL)
727 ll_dump_inode(dentry->d_inode);
732 list_for_each(tmp, &dentry->d_subdirs) {
733 struct dentry *d = list_entry(tmp, struct dentry, d_u.d_child);
734 lustre_dump_dentry(d, recur - 1);
738 static void client_common_put_super(struct super_block *sb)
740 struct ll_sb_info *sbi = ll_s2sbi(sb);
743 #ifdef CONFIG_FS_POSIX_ACL
744 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
745 et_fini(&sbi->ll_et);
746 rct_fini(&sbi->ll_rct);
750 ll_close_thread_shutdown(sbi->ll_lcq);
754 list_del(&sbi->ll_conn_chain);
756 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
757 obd_disconnect(sbi->ll_dt_exp);
758 sbi->ll_dt_exp = NULL;
759 /* wait till all OSCs are gone, since cl_cache is accessing sbi.
761 obd_zombie_barrier();
763 lprocfs_unregister_mountpoint(sbi);
765 obd_fid_fini(sbi->ll_md_exp->exp_obd);
766 obd_disconnect(sbi->ll_md_exp);
767 sbi->ll_md_exp = NULL;
772 void ll_kill_super(struct super_block *sb)
774 struct ll_sb_info *sbi;
779 if (!(sb->s_flags & MS_ACTIVE))
783 /* we need restore s_dev from changed for clustred NFS before put_super
784 * because new kernels have cached s_dev and change sb->s_dev in
785 * put_super not affected real removing devices */
787 sb->s_dev = sbi->ll_sdev_orig;
788 sbi->ll_umounting = 1;
793 static inline int ll_set_opt(const char *opt, char *data, int fl)
795 if (strncmp(opt, data, strlen(opt)) != 0)
801 /* non-client-specific mount options are parsed in lmd_parse */
802 static int ll_options(char *options, int *flags)
805 char *s1 = options, *s2;
811 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
814 CDEBUG(D_SUPER, "next opt=%s\n", s1);
815 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
820 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
825 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
830 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
835 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
840 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
845 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 6, 51, 0)
846 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
848 /* Ignore deprecated mount option. The client will
849 * always try to mount with ACL support, whether this
850 * is used depends on whether server supports it. */
851 LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
852 "mount option 'acl'.\n");
855 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
857 LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
858 "mount option 'noacl'.\n");
862 #warning "{no}acl options have been deprecated since 1.8, please remove them"
864 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
869 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
874 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
880 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
885 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
890 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
895 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
900 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
905 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
910 tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW);
915 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
920 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
925 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
930 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
936 s2 = strchr(s1, ',');
944 void ll_lli_init(struct ll_inode_info *lli)
946 lli->lli_inode_magic = LLI_INODE_MAGIC;
948 lli->lli_ioepoch = 0;
949 lli->lli_maxbytes = MAX_LFS_FILESIZE;
950 spin_lock_init(&lli->lli_lock);
951 lli->lli_posix_acl = NULL;
952 lli->lli_remote_perms = NULL;
953 mutex_init(&lli->lli_rmtperm_mutex);
954 /* Do not set lli_fid, it has been initialized already. */
955 fid_zero(&lli->lli_pfid);
956 INIT_LIST_HEAD(&lli->lli_close_list);
957 INIT_LIST_HEAD(&lli->lli_oss_capas);
958 atomic_set(&lli->lli_open_count, 0);
959 lli->lli_mds_capa = NULL;
960 lli->lli_rmtperm_time = 0;
961 lli->lli_pending_och = NULL;
962 lli->lli_mds_read_och = NULL;
963 lli->lli_mds_write_och = NULL;
964 lli->lli_mds_exec_och = NULL;
965 lli->lli_open_fd_read_count = 0;
966 lli->lli_open_fd_write_count = 0;
967 lli->lli_open_fd_exec_count = 0;
968 mutex_init(&lli->lli_och_mutex);
969 spin_lock_init(&lli->lli_agl_lock);
970 lli->lli_has_smd = false;
971 spin_lock_init(&lli->lli_layout_lock);
972 ll_layout_version_set(lli, LL_LAYOUT_GEN_NONE);
973 lli->lli_clob = NULL;
975 init_rwsem(&lli->lli_xattrs_list_rwsem);
976 mutex_init(&lli->lli_xattrs_enq_lock);
978 LASSERT(lli->lli_vfs_inode.i_mode != 0);
979 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
980 mutex_init(&lli->lli_readdir_mutex);
981 lli->lli_opendir_key = NULL;
983 spin_lock_init(&lli->lli_sa_lock);
984 lli->lli_opendir_pid = 0;
986 mutex_init(&lli->lli_size_mutex);
987 lli->lli_symlink_name = NULL;
988 init_rwsem(&lli->lli_trunc_sem);
989 mutex_init(&lli->lli_write_mutex);
990 init_rwsem(&lli->lli_glimpse_sem);
991 lli->lli_glimpse_time = 0;
992 INIT_LIST_HEAD(&lli->lli_agl_list);
993 lli->lli_agl_index = 0;
994 lli->lli_async_rc = 0;
996 mutex_init(&lli->lli_layout_mutex);
999 static inline int ll_bdi_register(struct backing_dev_info *bdi)
1001 static atomic_t ll_bdi_num = ATOMIC_INIT(0);
1003 bdi->name = "lustre";
1004 return bdi_register(bdi, NULL, "lustre-%d",
1005 atomic_inc_return(&ll_bdi_num));
1008 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
1010 struct lustre_profile *lprof = NULL;
1011 struct lustre_sb_info *lsi = s2lsi(sb);
1012 struct ll_sb_info *sbi;
1013 char *dt = NULL, *md = NULL;
1014 char *profilenm = get_profile_name(sb);
1015 struct config_llog_instance *cfg;
1016 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1017 const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
1021 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
1027 try_module_get(THIS_MODULE);
1029 /* client additional sb info */
1030 lsi->lsi_llsbi = sbi = ll_init_sbi();
1032 module_put(THIS_MODULE);
1037 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
1039 GOTO(out_free, err);
1041 err = bdi_init(&lsi->lsi_bdi);
1043 GOTO(out_free, err);
1044 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1045 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1046 err = ll_bdi_register(&lsi->lsi_bdi);
1048 GOTO(out_free, err);
1050 sb->s_bdi = &lsi->lsi_bdi;
1051 #ifndef HAVE_DCACHE_LOCK
1052 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1053 sb->s_d_op = &ll_d_ops;
1056 /* Generate a string unique to this super, in case some joker tries
1057 to mount the same fs at two mount points.
1058 Use the address of the super itself.*/
1059 cfg->cfg_instance = sb;
1060 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1061 cfg->cfg_callback = class_config_llog_handler;
1062 /* set up client obds */
1063 err = lustre_process_log(sb, profilenm, cfg);
1065 GOTO(out_free, err);
1067 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1068 lprof = class_get_profile(profilenm);
1069 if (lprof == NULL) {
1070 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1071 " read from the MGS. Does that filesystem "
1072 "exist?\n", profilenm);
1073 GOTO(out_free, err = -EINVAL);
1075 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1076 lprof->lp_md, lprof->lp_dt);
1078 OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
1080 GOTO(out_free, err = -ENOMEM);
1081 sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
1083 OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
1085 GOTO(out_free, err = -ENOMEM);
1086 sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1088 /* connections, registrations, sb setup */
1089 err = client_common_fill_super(sb, md, dt, mnt);
1093 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1095 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1098 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1099 LCONSOLE_WARN("Mounted %s\n", profilenm);
1103 } /* ll_fill_super */
1105 void ll_put_super(struct super_block *sb)
1107 struct config_llog_instance cfg, params_cfg;
1108 struct obd_device *obd;
1109 struct lustre_sb_info *lsi = s2lsi(sb);
1110 struct ll_sb_info *sbi = ll_s2sbi(sb);
1111 char *profilenm = get_profile_name(sb);
1112 int ccc_count, next, force = 1, rc = 0;
1115 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1117 ll_print_capa_stat(sbi);
1119 cfg.cfg_instance = sb;
1120 lustre_end_log(sb, profilenm, &cfg);
1122 params_cfg.cfg_instance = sb;
1123 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1125 if (sbi->ll_md_exp) {
1126 obd = class_exp2obd(sbi->ll_md_exp);
1128 force = obd->obd_force;
1131 /* Wait for unstable pages to be committed to stable storage */
1133 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
1134 rc = l_wait_event(sbi->ll_cache.ccc_unstable_waitq,
1135 atomic_read(&sbi->ll_cache.ccc_unstable_nr) == 0,
1139 ccc_count = atomic_read(&sbi->ll_cache.ccc_unstable_nr);
1140 if (force == 0 && rc != -EINTR)
1141 LASSERTF(ccc_count == 0, "count: %i\n", ccc_count);
1144 /* We need to set force before the lov_disconnect in
1145 lustre_common_put_super, since l_d cleans up osc's as well. */
1148 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1150 obd->obd_force = force;
1155 /* Only if client_common_fill_super succeeded */
1156 client_common_put_super(sb);
1160 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1161 class_manual_cleanup(obd);
1164 if (sbi->ll_flags & LL_SBI_VERBOSE)
1165 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1168 class_del_profile(profilenm);
1170 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1171 bdi_destroy(&lsi->lsi_bdi);
1172 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1176 lsi->lsi_llsbi = NULL;
1178 lustre_common_put_super(sb);
1180 cl_env_cache_purge(~0);
1182 module_put(THIS_MODULE);
1185 } /* client_put_super */
1187 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1189 struct inode *inode = NULL;
1191 /* NOTE: we depend on atomic igrab() -bzzz */
1192 lock_res_and_lock(lock);
1193 if (lock->l_resource->lr_lvb_inode) {
1194 struct ll_inode_info * lli;
1195 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1196 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1197 inode = igrab(lock->l_resource->lr_lvb_inode);
1199 inode = lock->l_resource->lr_lvb_inode;
1200 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1201 D_WARNING, lock, "lr_lvb_inode %p is "
1202 "bogus: magic %08x",
1203 lock->l_resource->lr_lvb_inode,
1204 lli->lli_inode_magic);
1208 unlock_res_and_lock(lock);
1212 static void ll_dir_clear_lsm_md(struct inode *inode)
1214 struct ll_inode_info *lli = ll_i2info(inode);
1216 LASSERT(S_ISDIR(inode->i_mode));
1218 if (lli->lli_lsm_md != NULL) {
1219 lmv_free_memmd(lli->lli_lsm_md);
1220 lli->lli_lsm_md = NULL;
1224 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1225 const struct lu_fid *fid,
1226 struct lustre_md *md)
1228 struct ll_sb_info *sbi = ll_s2sbi(sb);
1229 struct mdt_body *body = md->body;
1230 struct inode *inode;
1234 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1235 inode = iget_locked(sb, ino);
1236 if (inode == NULL) {
1237 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1238 ll_get_fsname(sb, NULL, 0), PFID(fid));
1239 RETURN(ERR_PTR(-ENOENT));
1242 if (inode->i_state & I_NEW) {
1243 struct ll_inode_info *lli = ll_i2info(inode);
1244 struct lmv_stripe_md *lsm = md->lmv;
1246 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1247 (body->mbo_mode & S_IFMT);
1248 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1251 LTIME_S(inode->i_mtime) = 0;
1252 LTIME_S(inode->i_atime) = 0;
1253 LTIME_S(inode->i_ctime) = 0;
1256 /* initializing backing dev info. */
1257 inode->i_mapping->backing_dev_info =
1258 &s2lsi(inode->i_sb)->lsi_bdi;
1259 inode->i_op = &ll_dir_inode_operations;
1260 inode->i_fop = &ll_dir_operations;
1261 lli->lli_fid = *fid;
1264 LASSERT(lsm != NULL);
1265 /* master object FID */
1266 lli->lli_pfid = body->mbo_fid1;
1267 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1268 lli, PFID(fid), PFID(&lli->lli_pfid));
1269 unlock_new_inode(inode);
1275 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1278 struct lmv_stripe_md *lsm = md->lmv;
1281 LASSERT(lsm != NULL);
1282 /* XXX sigh, this lsm_root initialization should be in
1283 * LMV layer, but it needs ll_iget right now, so we
1284 * put this here right now. */
1285 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1286 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1287 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1288 /* Unfortunately ll_iget will call ll_update_inode,
1289 * where the initialization of slave inode is slightly
1290 * different, so it reset lsm_md to NULL to avoid
1291 * initializing lsm for slave inode. */
1292 /* For migrating inode, master stripe and master object will
1293 * be same, so we only need assign this inode */
1294 if (lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION && i == 0)
1295 lsm->lsm_md_oinfo[i].lmo_root = inode;
1297 lsm->lsm_md_oinfo[i].lmo_root =
1298 ll_iget_anon_dir(inode->i_sb, fid, md);
1300 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1301 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1303 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1308 /* Here is where the lsm is being initialized(fill lmo_info) after
1309 * client retrieve MD stripe information from MDT. */
1310 return md_update_lsm_md(ll_i2mdexp(inode), lsm, md->body,
1311 ll_md_blocking_ast);
1314 static inline int lli_lsm_md_eq(const struct lmv_stripe_md *lsm_md1,
1315 const struct lmv_stripe_md *lsm_md2)
1317 return lsm_md1->lsm_md_magic == lsm_md2->lsm_md_magic &&
1318 lsm_md1->lsm_md_stripe_count == lsm_md2->lsm_md_stripe_count &&
1319 lsm_md1->lsm_md_master_mdt_index ==
1320 lsm_md2->lsm_md_master_mdt_index &&
1321 lsm_md1->lsm_md_hash_type == lsm_md2->lsm_md_hash_type &&
1322 lsm_md1->lsm_md_layout_version ==
1323 lsm_md2->lsm_md_layout_version &&
1324 strcmp(lsm_md1->lsm_md_pool_name,
1325 lsm_md2->lsm_md_pool_name) == 0;
1328 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1330 struct ll_inode_info *lli = ll_i2info(inode);
1331 struct lmv_stripe_md *lsm = md->lmv;
1335 LASSERT(S_ISDIR(inode->i_mode));
1336 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1337 PFID(ll_inode2fid(inode)));
1339 /* no striped information from request. */
1341 if (lli->lli_lsm_md == NULL) {
1343 } else if (lli->lli_lsm_md->lsm_md_hash_type &
1344 LMV_HASH_FLAG_MIGRATION) {
1345 /* migration is done, the temporay MIGRATE layout has
1347 CDEBUG(D_INODE, DFID" finish migration.\n",
1348 PFID(ll_inode2fid(inode)));
1349 lmv_free_memmd(lli->lli_lsm_md);
1350 lli->lli_lsm_md = NULL;
1353 /* The lustre_md from req does not include stripeEA,
1354 * see ll_md_setattr */
1359 /* set the directory layout */
1360 if (lli->lli_lsm_md == NULL) {
1362 rc = ll_init_lsm_md(inode, md);
1366 lli->lli_lsm_md = lsm;
1367 /* set lsm_md to NULL, so the following free lustre_md
1368 * will not free this lsm */
1370 CDEBUG(D_INODE, "Set lsm %p magic %x to "DFID"\n", lsm,
1371 lsm->lsm_md_magic, PFID(ll_inode2fid(inode)));
1375 /* Compare the old and new stripe information */
1376 if (!lsm_md_eq(lli->lli_lsm_md, lsm)) {
1377 struct lmv_stripe_md *old_lsm = lli->lli_lsm_md;
1380 CERROR("%s: lmv layout mismatch "DFID"(%p)/"DFID"(%p)"
1381 "magic:0x%x/0x%x stripe count: %d/%d master_mdt: %d/%d"
1382 "hash_type:0x%x/0x%x layout: 0x%x/0x%x pool:%s/%s\n",
1383 ll_get_fsname(inode->i_sb, NULL, 0),
1384 PFID(&lsm->lsm_md_master_fid), lsm,
1385 PFID(&old_lsm->lsm_md_master_fid), old_lsm,
1386 lsm->lsm_md_magic, old_lsm->lsm_md_magic,
1387 lsm->lsm_md_stripe_count,
1388 old_lsm->lsm_md_stripe_count,
1389 lsm->lsm_md_master_mdt_index,
1390 old_lsm->lsm_md_master_mdt_index,
1391 lsm->lsm_md_hash_type, old_lsm->lsm_md_hash_type,
1392 lsm->lsm_md_layout_version,
1393 old_lsm->lsm_md_layout_version,
1394 lsm->lsm_md_pool_name,
1395 old_lsm->lsm_md_pool_name);
1397 for (idx = 0; idx < old_lsm->lsm_md_stripe_count; idx++) {
1398 CERROR("%s: sub FIDs in old lsm idx %d, old: "DFID"\n",
1399 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1400 PFID(&old_lsm->lsm_md_oinfo[idx].lmo_fid));
1403 for (idx = 0; idx < lsm->lsm_md_stripe_count; idx++) {
1404 CERROR("%s: sub FIDs in new lsm idx %d, new: "DFID"\n",
1405 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1406 PFID(&lsm->lsm_md_oinfo[idx].lmo_fid));
1412 rc = md_update_lsm_md(ll_i2mdexp(inode), ll_i2info(inode)->lli_lsm_md,
1413 md->body, ll_md_blocking_ast);
1418 void ll_clear_inode(struct inode *inode)
1420 struct ll_inode_info *lli = ll_i2info(inode);
1421 struct ll_sb_info *sbi = ll_i2sbi(inode);
1424 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1425 PFID(ll_inode2fid(inode)), inode);
1427 if (S_ISDIR(inode->i_mode)) {
1428 /* these should have been cleared in ll_file_release */
1429 LASSERT(lli->lli_opendir_key == NULL);
1430 LASSERT(lli->lli_sai == NULL);
1431 LASSERT(lli->lli_opendir_pid == 0);
1434 spin_lock(&lli->lli_lock);
1435 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1436 spin_unlock(&lli->lli_lock);
1437 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1439 LASSERT(!lli->lli_open_fd_write_count);
1440 LASSERT(!lli->lli_open_fd_read_count);
1441 LASSERT(!lli->lli_open_fd_exec_count);
1443 if (lli->lli_mds_write_och)
1444 ll_md_real_close(inode, FMODE_WRITE);
1445 if (lli->lli_mds_exec_och)
1446 ll_md_real_close(inode, FMODE_EXEC);
1447 if (lli->lli_mds_read_och)
1448 ll_md_real_close(inode, FMODE_READ);
1450 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1451 OBD_FREE(lli->lli_symlink_name,
1452 strlen(lli->lli_symlink_name) + 1);
1453 lli->lli_symlink_name = NULL;
1456 ll_xattr_cache_destroy(inode);
1458 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1459 LASSERT(lli->lli_posix_acl == NULL);
1460 if (lli->lli_remote_perms) {
1461 free_rmtperm_hash(lli->lli_remote_perms);
1462 lli->lli_remote_perms = NULL;
1465 #ifdef CONFIG_FS_POSIX_ACL
1466 else if (lli->lli_posix_acl) {
1467 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1468 LASSERT(lli->lli_remote_perms == NULL);
1469 posix_acl_release(lli->lli_posix_acl);
1470 lli->lli_posix_acl = NULL;
1473 lli->lli_inode_magic = LLI_INODE_DEAD;
1475 ll_clear_inode_capas(inode);
1476 if (S_ISDIR(inode->i_mode))
1477 ll_dir_clear_lsm_md(inode);
1478 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1479 LASSERT(list_empty(&lli->lli_agl_list));
1482 * XXX This has to be done before lsm is freed below, because
1483 * cl_object still uses inode lsm.
1485 cl_inode_fini(inode);
1486 lli->lli_has_smd = false;
1491 int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
1492 struct md_open_data **mod)
1494 struct lustre_md md;
1495 struct inode *inode = dentry->d_inode;
1496 struct ll_sb_info *sbi = ll_i2sbi(inode);
1497 struct ptlrpc_request *request = NULL;
1501 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1502 LUSTRE_OPC_ANY, NULL);
1503 if (IS_ERR(op_data))
1504 RETURN(PTR_ERR(op_data));
1506 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1509 ptlrpc_req_finished(request);
1510 if (rc == -ENOENT) {
1512 /* Unlinked special device node? Or just a race?
1513 * Pretend we done everything. */
1514 if (!S_ISREG(inode->i_mode) &&
1515 !S_ISDIR(inode->i_mode)) {
1516 ia_valid = op_data->op_attr.ia_valid;
1517 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1518 rc = simple_setattr(dentry, &op_data->op_attr);
1519 op_data->op_attr.ia_valid = ia_valid;
1521 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1522 CERROR("md_setattr fails: rc = %d\n", rc);
1527 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1528 sbi->ll_md_exp, &md);
1530 ptlrpc_req_finished(request);
1534 ia_valid = op_data->op_attr.ia_valid;
1535 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1536 * cache is not cleared yet. */
1537 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1538 rc = simple_setattr(dentry, &op_data->op_attr);
1539 op_data->op_attr.ia_valid = ia_valid;
1541 /* Extract epoch data if obtained. */
1542 op_data->op_handle = md.body->mbo_handle;
1543 op_data->op_ioepoch = md.body->mbo_ioepoch;
1545 rc = ll_update_inode(inode, &md);
1546 ptlrpc_req_finished(request);
1551 /* Close IO epoch and send Size-on-MDS attribute update. */
1552 static int ll_setattr_done_writing(struct inode *inode,
1553 struct md_op_data *op_data,
1554 struct md_open_data *mod)
1556 struct ll_inode_info *lli = ll_i2info(inode);
1560 LASSERT(op_data != NULL);
1561 if (!S_ISREG(inode->i_mode))
1564 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1565 op_data->op_ioepoch, PFID(&lli->lli_fid));
1567 op_data->op_flags = MF_EPOCH_CLOSE;
1568 ll_done_writing_attr(inode, op_data);
1569 ll_pack_inode2opdata(inode, op_data, NULL);
1571 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1572 if (rc == -EAGAIN) {
1573 /* MDS has instructed us to obtain Size-on-MDS attribute
1574 * from OSTs and send setattr to back to MDS. */
1575 rc = ll_som_update(inode, op_data);
1577 CERROR("%s: inode "DFID" mdc truncate failed: rc = %d\n",
1578 ll_i2sbi(inode)->ll_md_exp->exp_obd->obd_name,
1579 PFID(ll_inode2fid(inode)), rc);
1584 static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
1586 struct obd_capa *capa;
1589 if (attr->ia_valid & ATTR_SIZE)
1590 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
1592 capa = ll_mdscapa_get(inode);
1594 rc = cl_setattr_ost(inode, attr, capa);
1596 if (attr->ia_valid & ATTR_SIZE)
1597 ll_truncate_free_capa(capa);
1604 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1605 * object(s) determine the file size and mtime. Otherwise, the MDS will
1606 * keep these values until such a time that objects are allocated for it.
1607 * We do the MDS operations first, as it is checking permissions for us.
1608 * We don't to the MDS RPC if there is nothing that we want to store there,
1609 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1610 * going to do an RPC anyways.
1612 * If we are doing a truncate, we will send the mtime and ctime updates
1613 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1614 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1617 * In case of HSMimport, we only set attr on MDS.
1619 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
1621 struct inode *inode = dentry->d_inode;
1622 struct ll_inode_info *lli = ll_i2info(inode);
1623 struct md_op_data *op_data = NULL;
1624 struct md_open_data *mod = NULL;
1625 bool file_is_released = false;
1626 int rc = 0, rc1 = 0;
1629 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1630 "valid %x, hsm_import %d\n",
1631 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1632 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1635 if (attr->ia_valid & ATTR_SIZE) {
1636 /* Check new size against VFS/VM file size limit and rlimit */
1637 rc = inode_newsize_ok(inode, attr->ia_size);
1641 /* The maximum Lustre file size is variable, based on the
1642 * OST maximum object size and number of stripes. This
1643 * needs another check in addition to the VFS check above. */
1644 if (attr->ia_size > ll_file_maxbytes(inode)) {
1645 CDEBUG(D_INODE,"file "DFID" too large %llu > "LPU64"\n",
1646 PFID(&lli->lli_fid), attr->ia_size,
1647 ll_file_maxbytes(inode));
1651 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1654 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1655 if (attr->ia_valid & TIMES_SET_FLAGS) {
1656 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1657 !cfs_capable(CFS_CAP_FOWNER))
1661 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1662 if (attr->ia_valid & ATTR_CTIME) {
1663 attr->ia_ctime = CFS_CURRENT_TIME;
1664 attr->ia_valid |= ATTR_CTIME_SET;
1666 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1667 (attr->ia_valid & ATTR_ATIME)) {
1668 attr->ia_atime = CFS_CURRENT_TIME;
1669 attr->ia_valid |= ATTR_ATIME_SET;
1671 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1672 (attr->ia_valid & ATTR_MTIME)) {
1673 attr->ia_mtime = CFS_CURRENT_TIME;
1674 attr->ia_valid |= ATTR_MTIME_SET;
1677 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1678 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1679 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1680 cfs_time_current_sec());
1682 /* We always do an MDS RPC, even if we're only changing the size;
1683 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1685 OBD_ALLOC_PTR(op_data);
1686 if (op_data == NULL)
1689 if (!S_ISDIR(inode->i_mode)) {
1690 if (attr->ia_valid & ATTR_SIZE)
1691 inode_dio_write_done(inode);
1692 mutex_unlock(&inode->i_mutex);
1695 /* truncate on a released file must failed with -ENODATA,
1696 * so size must not be set on MDS for released file
1697 * but other attributes must be set
1699 if (S_ISREG(inode->i_mode)) {
1700 struct lov_stripe_md *lsm;
1703 ll_layout_refresh(inode, &gen);
1704 lsm = ccc_inode_lsm_get(inode);
1705 if (lsm && lsm->lsm_pattern & LOV_PATTERN_F_RELEASED)
1706 file_is_released = true;
1707 ccc_inode_lsm_put(inode, lsm);
1709 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1710 if (file_is_released) {
1711 rc = ll_layout_restore(inode, 0, attr->ia_size);
1715 file_is_released = false;
1716 ll_layout_refresh(inode, &gen);
1719 /* If we are changing file size, file content is
1720 * modified, flag it. */
1721 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1722 spin_lock(&lli->lli_lock);
1723 lli->lli_flags |= LLIF_DATA_MODIFIED;
1724 spin_unlock(&lli->lli_lock);
1725 op_data->op_bias |= MDS_DATA_MODIFIED;
1729 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1731 /* Open epoch for truncate. */
1732 if (exp_connect_som(ll_i2mdexp(inode)) && !hsm_import &&
1733 (attr->ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
1734 op_data->op_flags = MF_EPOCH_OPEN;
1736 rc = ll_md_setattr(dentry, op_data, &mod);
1740 /* RPC to MDT is sent, cancel data modification flag */
1741 if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) {
1742 spin_lock(&lli->lli_lock);
1743 lli->lli_flags &= ~LLIF_DATA_MODIFIED;
1744 spin_unlock(&lli->lli_lock);
1747 ll_ioepoch_open(lli, op_data->op_ioepoch);
1748 if (!S_ISREG(inode->i_mode) || file_is_released)
1751 if (attr->ia_valid & (ATTR_SIZE |
1752 ATTR_ATIME | ATTR_ATIME_SET |
1753 ATTR_MTIME | ATTR_MTIME_SET)) {
1754 /* For truncate and utimes sending attributes to OSTs, setting
1755 * mtime/atime to the past will be performed under PW [0:EOF]
1756 * extent lock (new_size:EOF for truncate). It may seem
1757 * excessive to send mtime/atime updates to OSTs when not
1758 * setting times to past, but it is necessary due to possible
1759 * time de-synchronization between MDT inode and OST objects */
1760 if (attr->ia_valid & ATTR_SIZE)
1761 down_write(&lli->lli_trunc_sem);
1762 rc = ll_setattr_ost(inode, attr);
1763 if (attr->ia_valid & ATTR_SIZE)
1764 up_write(&lli->lli_trunc_sem);
1769 if (op_data->op_ioepoch) {
1770 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1774 ll_finish_md_op_data(op_data);
1776 if (!S_ISDIR(inode->i_mode)) {
1777 mutex_lock(&inode->i_mutex);
1778 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1779 inode_dio_wait(inode);
1782 ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
1783 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1788 int ll_setattr(struct dentry *de, struct iattr *attr)
1790 int mode = de->d_inode->i_mode;
1792 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1793 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1794 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1796 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1797 (ATTR_SIZE|ATTR_MODE)) &&
1798 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1799 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1800 !(attr->ia_mode & S_ISGID))))
1801 attr->ia_valid |= ATTR_FORCE;
1803 if ((attr->ia_valid & ATTR_MODE) &&
1805 !(attr->ia_mode & S_ISUID) &&
1806 !(attr->ia_valid & ATTR_KILL_SUID))
1807 attr->ia_valid |= ATTR_KILL_SUID;
1809 if ((attr->ia_valid & ATTR_MODE) &&
1810 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1811 !(attr->ia_mode & S_ISGID) &&
1812 !(attr->ia_valid & ATTR_KILL_SGID))
1813 attr->ia_valid |= ATTR_KILL_SGID;
1815 return ll_setattr_raw(de, attr, false);
1818 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1819 __u64 max_age, __u32 flags)
1821 struct ll_sb_info *sbi = ll_s2sbi(sb);
1822 struct obd_statfs obd_osfs;
1826 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1828 CERROR("md_statfs fails: rc = %d\n", rc);
1832 osfs->os_type = sb->s_magic;
1834 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1835 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1837 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1838 flags |= OBD_STATFS_NODELAY;
1840 rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1842 CERROR("obd_statfs fails: rc = %d\n", rc);
1846 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1847 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1850 osfs->os_bsize = obd_osfs.os_bsize;
1851 osfs->os_blocks = obd_osfs.os_blocks;
1852 osfs->os_bfree = obd_osfs.os_bfree;
1853 osfs->os_bavail = obd_osfs.os_bavail;
1855 /* If we don't have as many objects free on the OST as inodes
1856 * on the MDS, we reduce the total number of inodes to
1857 * compensate, so that the "inodes in use" number is correct.
1859 if (obd_osfs.os_ffree < osfs->os_ffree) {
1860 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1862 osfs->os_ffree = obd_osfs.os_ffree;
1867 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1869 struct super_block *sb = de->d_sb;
1870 struct obd_statfs osfs;
1871 __u64 fsid = huge_encode_dev(sb->s_dev);
1874 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1875 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1877 /* Some amount of caching on the client is allowed */
1878 rc = ll_statfs_internal(sb, &osfs,
1879 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1884 statfs_unpack(sfs, &osfs);
1886 /* We need to downshift for all 32-bit kernels, because we can't
1887 * tell if the kernel is being called via sys_statfs64() or not.
1888 * Stop before overflowing f_bsize - in which case it is better
1889 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1890 if (sizeof(long) < 8) {
1891 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1894 osfs.os_blocks >>= 1;
1895 osfs.os_bfree >>= 1;
1896 osfs.os_bavail >>= 1;
1900 sfs->f_blocks = osfs.os_blocks;
1901 sfs->f_bfree = osfs.os_bfree;
1902 sfs->f_bavail = osfs.os_bavail;
1903 sfs->f_fsid.val[0] = (__u32)fsid;
1904 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
1908 void ll_inode_size_lock(struct inode *inode)
1910 struct ll_inode_info *lli;
1912 LASSERT(!S_ISDIR(inode->i_mode));
1914 lli = ll_i2info(inode);
1915 mutex_lock(&lli->lli_size_mutex);
1918 void ll_inode_size_unlock(struct inode *inode)
1920 struct ll_inode_info *lli;
1922 lli = ll_i2info(inode);
1923 mutex_unlock(&lli->lli_size_mutex);
1926 int ll_update_inode(struct inode *inode, struct lustre_md *md)
1928 struct ll_inode_info *lli = ll_i2info(inode);
1929 struct mdt_body *body = md->body;
1930 struct lov_stripe_md *lsm = md->lsm;
1931 struct ll_sb_info *sbi = ll_i2sbi(inode);
1933 LASSERT((lsm != NULL) == ((body->mbo_valid & OBD_MD_FLEASIZE) != 0));
1935 if (!lli->lli_has_smd &&
1936 !(sbi->ll_flags & LL_SBI_LAYOUT_LOCK))
1937 cl_file_inode_init(inode, md);
1939 lli->lli_maxbytes = lsm->lsm_maxbytes;
1940 if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
1941 lli->lli_maxbytes = MAX_LFS_FILESIZE;
1944 if (S_ISDIR(inode->i_mode)) {
1947 rc = ll_update_lsm_md(inode, md);
1952 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1953 if (body->mbo_valid & OBD_MD_FLRMTPERM)
1954 ll_update_remote_perm(inode, md->remote_perm);
1956 #ifdef CONFIG_FS_POSIX_ACL
1957 else if (body->mbo_valid & OBD_MD_FLACL) {
1958 spin_lock(&lli->lli_lock);
1959 if (lli->lli_posix_acl)
1960 posix_acl_release(lli->lli_posix_acl);
1961 lli->lli_posix_acl = md->posix_acl;
1962 spin_unlock(&lli->lli_lock);
1965 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
1966 sbi->ll_flags & LL_SBI_32BIT_API);
1967 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
1969 if (body->mbo_valid & OBD_MD_FLATIME) {
1970 if (body->mbo_atime > LTIME_S(inode->i_atime))
1971 LTIME_S(inode->i_atime) = body->mbo_atime;
1972 lli->lli_lvb.lvb_atime = body->mbo_atime;
1975 if (body->mbo_valid & OBD_MD_FLMTIME) {
1976 if (body->mbo_mtime > LTIME_S(inode->i_mtime)) {
1977 CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1978 "to "LPU64"\n", inode->i_ino,
1979 LTIME_S(inode->i_mtime), body->mbo_mtime);
1980 LTIME_S(inode->i_mtime) = body->mbo_mtime;
1982 lli->lli_lvb.lvb_mtime = body->mbo_mtime;
1985 if (body->mbo_valid & OBD_MD_FLCTIME) {
1986 if (body->mbo_ctime > LTIME_S(inode->i_ctime))
1987 LTIME_S(inode->i_ctime) = body->mbo_ctime;
1988 lli->lli_lvb.lvb_ctime = body->mbo_ctime;
1991 if (body->mbo_valid & OBD_MD_FLMODE)
1992 inode->i_mode = (inode->i_mode & S_IFMT) |
1993 (body->mbo_mode & ~S_IFMT);
1995 if (body->mbo_valid & OBD_MD_FLTYPE)
1996 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1997 (body->mbo_mode & S_IFMT);
1999 LASSERT(inode->i_mode != 0);
2000 if (S_ISREG(inode->i_mode))
2001 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
2002 LL_MAX_BLKSIZE_BITS);
2004 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
2006 if (body->mbo_valid & OBD_MD_FLUID)
2007 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
2008 if (body->mbo_valid & OBD_MD_FLGID)
2009 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
2010 if (body->mbo_valid & OBD_MD_FLFLAGS)
2011 inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
2012 if (body->mbo_valid & OBD_MD_FLNLINK)
2013 set_nlink(inode, body->mbo_nlink);
2014 if (body->mbo_valid & OBD_MD_FLRDEV)
2015 inode->i_rdev = old_decode_dev(body->mbo_rdev);
2017 if (body->mbo_valid & OBD_MD_FLID) {
2018 /* FID shouldn't be changed! */
2019 if (fid_is_sane(&lli->lli_fid)) {
2020 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
2021 "Trying to change FID "DFID
2022 " to the "DFID", inode "DFID"(%p)\n",
2023 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
2024 PFID(ll_inode2fid(inode)), inode);
2026 lli->lli_fid = body->mbo_fid1;
2030 LASSERT(fid_seq(&lli->lli_fid) != 0);
2032 if (body->mbo_valid & OBD_MD_FLSIZE) {
2033 if (exp_connect_som(ll_i2mdexp(inode)) &&
2034 S_ISREG(inode->i_mode)) {
2035 struct lustre_handle lockh;
2038 /* As it is possible a blocking ast has been processed
2039 * by this time, we need to check there is an UPDATE
2040 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
2042 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
2043 &lockh, LDLM_FL_CBPENDING,
2047 if (lli->lli_flags & (LLIF_DONE_WRITING |
2048 LLIF_EPOCH_PENDING |
2050 CERROR("%s: inode "DFID" flags %u still"
2051 " has size authority! do not "
2052 "trust the size from MDS\n",
2053 sbi->ll_md_exp->exp_obd->obd_name,
2054 PFID(ll_inode2fid(inode)),
2057 /* Use old size assignment to avoid
2058 * deadlock bz14138 & bz14326 */
2059 i_size_write(inode, body->mbo_size);
2060 spin_lock(&lli->lli_lock);
2061 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
2062 spin_unlock(&lli->lli_lock);
2064 ldlm_lock_decref(&lockh, mode);
2067 /* Use old size assignment to avoid
2068 * deadlock bz14138 & bz14326 */
2069 i_size_write(inode, body->mbo_size);
2072 "inode="DFID", updating i_size %llu\n",
2073 PFID(ll_inode2fid(inode)),
2074 (unsigned long long)body->mbo_size);
2077 if (body->mbo_valid & OBD_MD_FLBLOCKS)
2078 inode->i_blocks = body->mbo_blocks;
2081 if (body->mbo_valid & OBD_MD_FLMDSCAPA) {
2082 LASSERT(md->mds_capa);
2083 ll_add_capa(inode, md->mds_capa);
2086 if (body->mbo_valid & OBD_MD_FLOSSCAPA) {
2087 LASSERT(md->oss_capa);
2088 ll_add_capa(inode, md->oss_capa);
2091 if (body->mbo_valid & OBD_MD_TSTATE) {
2092 if (body->mbo_t_state & MS_RESTORE)
2093 lli->lli_flags |= LLIF_FILE_RESTORING;
2099 int ll_read_inode2(struct inode *inode, void *opaque)
2101 struct lustre_md *md = opaque;
2102 struct ll_inode_info *lli = ll_i2info(inode);
2106 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2107 PFID(&lli->lli_fid), inode);
2109 LASSERT(!lli->lli_has_smd);
2111 /* Core attributes from the MDS first. This is a new inode, and
2112 * the VFS doesn't zero times in the core inode so we have to do
2113 * it ourselves. They will be overwritten by either MDS or OST
2114 * attributes - we just need to make sure they aren't newer. */
2115 LTIME_S(inode->i_mtime) = 0;
2116 LTIME_S(inode->i_atime) = 0;
2117 LTIME_S(inode->i_ctime) = 0;
2119 rc = ll_update_inode(inode, md);
2123 /* OIDEBUG(inode); */
2125 /* initializing backing dev info. */
2126 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2129 if (S_ISREG(inode->i_mode)) {
2130 struct ll_sb_info *sbi = ll_i2sbi(inode);
2131 inode->i_op = &ll_file_inode_operations;
2132 inode->i_fop = sbi->ll_fop;
2133 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2135 } else if (S_ISDIR(inode->i_mode)) {
2136 inode->i_op = &ll_dir_inode_operations;
2137 inode->i_fop = &ll_dir_operations;
2139 } else if (S_ISLNK(inode->i_mode)) {
2140 inode->i_op = &ll_fast_symlink_inode_operations;
2143 inode->i_op = &ll_special_inode_operations;
2145 init_special_inode(inode, inode->i_mode,
2154 void ll_delete_inode(struct inode *inode)
2156 struct cl_inode_info *lli = cl_i2info(inode);
2159 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
2160 /* discard all dirty pages before truncating them, required by
2161 * osc_extent implementation at LU-1030. */
2162 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF,
2163 CL_FSYNC_DISCARD, 1);
2165 truncate_inode_pages(&inode->i_data, 0);
2167 /* Workaround for LU-118 */
2168 if (inode->i_data.nrpages) {
2169 spin_lock_irq(&inode->i_data.tree_lock);
2170 spin_unlock_irq(&inode->i_data.tree_lock);
2171 LASSERTF(inode->i_data.nrpages == 0,
2172 "inode="DFID"(%p) nrpages=%lu, see "
2173 "http://jira.whamcloud.com/browse/LU-118\n",
2174 PFID(ll_inode2fid(inode)), inode,
2175 inode->i_data.nrpages);
2177 /* Workaround end */
2179 #ifdef HAVE_SBOPS_EVICT_INODE
2180 ll_clear_inode(inode);
2187 int ll_iocontrol(struct inode *inode, struct file *file,
2188 unsigned int cmd, unsigned long arg)
2190 struct ll_sb_info *sbi = ll_i2sbi(inode);
2191 struct ptlrpc_request *req = NULL;
2196 case FSFILT_IOC_GETFLAGS: {
2197 struct mdt_body *body;
2198 struct md_op_data *op_data;
2200 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2201 0, 0, LUSTRE_OPC_ANY,
2203 if (IS_ERR(op_data))
2204 RETURN(PTR_ERR(op_data));
2206 op_data->op_valid = OBD_MD_FLFLAGS;
2207 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2208 ll_finish_md_op_data(op_data);
2210 CERROR("%s: failure inode "DFID": rc = %d\n",
2211 sbi->ll_md_exp->exp_obd->obd_name,
2212 PFID(ll_inode2fid(inode)), rc);
2216 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2218 flags = body->mbo_flags;
2220 ptlrpc_req_finished(req);
2222 RETURN(put_user(flags, (int *)arg));
2224 case FSFILT_IOC_SETFLAGS: {
2225 struct lov_stripe_md *lsm;
2226 struct obd_info oinfo = { { { 0 } } };
2227 struct md_op_data *op_data;
2229 if (get_user(flags, (int *)arg))
2232 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2233 LUSTRE_OPC_ANY, NULL);
2234 if (IS_ERR(op_data))
2235 RETURN(PTR_ERR(op_data));
2237 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
2238 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
2239 rc = md_setattr(sbi->ll_md_exp, op_data,
2240 NULL, 0, NULL, 0, &req, NULL);
2241 ll_finish_md_op_data(op_data);
2242 ptlrpc_req_finished(req);
2246 inode->i_flags = ll_ext_to_inode_flags(flags);
2248 lsm = ccc_inode_lsm_get(inode);
2249 if (!lsm_has_objects(lsm)) {
2250 ccc_inode_lsm_put(inode, lsm);
2254 OBDO_ALLOC(oinfo.oi_oa);
2256 ccc_inode_lsm_put(inode, lsm);
2260 oinfo.oi_oa->o_oi = lsm->lsm_oi;
2261 oinfo.oi_oa->o_flags = flags;
2262 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
2264 oinfo.oi_capa = ll_mdscapa_get(inode);
2265 obdo_set_parent_fid(oinfo.oi_oa, &ll_i2info(inode)->lli_fid);
2266 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
2267 capa_put(oinfo.oi_capa);
2268 OBDO_FREE(oinfo.oi_oa);
2269 ccc_inode_lsm_put(inode, lsm);
2271 if (rc && rc != -EPERM && rc != -EACCES)
2272 CERROR("osc_setattr_async fails: rc = %d\n", rc);
2283 int ll_flush_ctx(struct inode *inode)
2285 struct ll_sb_info *sbi = ll_i2sbi(inode);
2287 CDEBUG(D_SEC, "flush context for user %d\n",
2288 from_kuid(&init_user_ns, current_uid()));
2290 obd_set_info_async(NULL, sbi->ll_md_exp,
2291 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2293 obd_set_info_async(NULL, sbi->ll_dt_exp,
2294 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2299 /* umount -f client means force down, don't save state */
2300 void ll_umount_begin(struct super_block *sb)
2302 struct ll_sb_info *sbi = ll_s2sbi(sb);
2303 struct obd_device *obd;
2304 struct obd_ioctl_data *ioc_data;
2307 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2308 sb->s_count, atomic_read(&sb->s_active));
2310 obd = class_exp2obd(sbi->ll_md_exp);
2312 CERROR("Invalid MDC connection handle "LPX64"\n",
2313 sbi->ll_md_exp->exp_handle.h_cookie);
2319 obd = class_exp2obd(sbi->ll_dt_exp);
2321 CERROR("Invalid LOV connection handle "LPX64"\n",
2322 sbi->ll_dt_exp->exp_handle.h_cookie);
2328 OBD_ALLOC_PTR(ioc_data);
2330 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2331 sizeof *ioc_data, ioc_data, NULL);
2333 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2334 sizeof *ioc_data, ioc_data, NULL);
2336 OBD_FREE_PTR(ioc_data);
2339 /* Really, we'd like to wait until there are no requests outstanding,
2340 * and then continue. For now, we just invalidate the requests,
2341 * schedule() and sleep one second if needed, and hope.
2347 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2349 struct ll_sb_info *sbi = ll_s2sbi(sb);
2350 char *profilenm = get_profile_name(sb);
2354 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2355 read_only = *flags & MS_RDONLY;
2356 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2357 sizeof(KEY_READ_ONLY),
2358 KEY_READ_ONLY, sizeof(read_only),
2361 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2362 profilenm, read_only ?
2363 "read-only" : "read-write", err);
2368 sb->s_flags |= MS_RDONLY;
2370 sb->s_flags &= ~MS_RDONLY;
2372 if (sbi->ll_flags & LL_SBI_VERBOSE)
2373 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2374 read_only ? "read-only" : "read-write");
2379 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2380 struct super_block *sb, struct lookup_intent *it)
2382 struct ll_sb_info *sbi = NULL;
2383 struct lustre_md md = { 0 };
2387 LASSERT(*inode || sb);
2388 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2389 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2390 sbi->ll_md_exp, &md);
2395 rc = ll_update_inode(*inode, &md);
2399 LASSERT(sb != NULL);
2402 * At this point server returns to client's same fid as client
2403 * generated for creating. So using ->fid1 is okay here.
2405 LASSERT(fid_is_sane(&md.body->mbo_fid1));
2407 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2408 sbi->ll_flags & LL_SBI_32BIT_API),
2410 if (IS_ERR(*inode)) {
2411 #ifdef CONFIG_FS_POSIX_ACL
2413 posix_acl_release(md.posix_acl);
2414 md.posix_acl = NULL;
2417 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2419 CERROR("new_inode -fatal: rc %d\n", rc);
2424 /* Handling piggyback layout lock.
2425 * Layout lock can be piggybacked by getattr and open request.
2426 * The lsm can be applied to inode only if it comes with a layout lock
2427 * otherwise correct layout may be overwritten, for example:
2428 * 1. proc1: mdt returns a lsm but not granting layout
2429 * 2. layout was changed by another client
2430 * 3. proc2: refresh layout and layout lock granted
2431 * 4. proc1: to apply a stale layout */
2432 if (it != NULL && it->d.lustre.it_lock_mode != 0) {
2433 struct lustre_handle lockh;
2434 struct ldlm_lock *lock;
2436 lockh.cookie = it->d.lustre.it_lock_handle;
2437 lock = ldlm_handle2lock(&lockh);
2438 LASSERT(lock != NULL);
2439 if (ldlm_has_layout(lock)) {
2440 struct cl_object_conf conf;
2442 memset(&conf, 0, sizeof(conf));
2443 conf.coc_opc = OBJECT_CONF_SET;
2444 conf.coc_inode = *inode;
2445 conf.coc_lock = lock;
2446 conf.u.coc_md = &md;
2447 (void)ll_layout_conf(*inode, &conf);
2449 LDLM_LOCK_PUT(lock);
2454 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2455 md_free_lustre_md(sbi->ll_md_exp, &md);
2459 int ll_obd_statfs(struct inode *inode, void *arg)
2461 struct ll_sb_info *sbi = NULL;
2462 struct obd_export *exp;
2464 struct obd_ioctl_data *data = NULL;
2469 if (!inode || !(sbi = ll_i2sbi(inode)))
2470 GOTO(out_statfs, rc = -EINVAL);
2472 rc = obd_ioctl_getdata(&buf, &len, arg);
2474 GOTO(out_statfs, rc);
2477 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2478 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2479 GOTO(out_statfs, rc = -EINVAL);
2481 if (data->ioc_inllen1 != sizeof(__u32) ||
2482 data->ioc_inllen2 != sizeof(__u32) ||
2483 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2484 data->ioc_plen2 != sizeof(struct obd_uuid))
2485 GOTO(out_statfs, rc = -EINVAL);
2487 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2488 if (type & LL_STATFS_LMV)
2489 exp = sbi->ll_md_exp;
2490 else if (type & LL_STATFS_LOV)
2491 exp = sbi->ll_dt_exp;
2493 GOTO(out_statfs, rc = -ENODEV);
2495 flags = (type & LL_STATFS_NODELAY) ? OBD_STATFS_NODELAY : 0;
2496 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, &flags);
2498 GOTO(out_statfs, rc);
2501 obd_ioctl_freedata(buf, len);
2505 int ll_process_config(struct lustre_cfg *lcfg)
2507 struct super_block *sb;
2512 /* The instance name contains the sb: lustre-client-aacfe000 */
2513 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2514 if (!ptr || !*(++ptr))
2516 if (sscanf(ptr, "%lx", &x) != 1)
2518 sb = (struct super_block *)x;
2519 /* This better be a real Lustre superblock! */
2520 LASSERT(s2lsi(sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2522 /* Note we have not called client_common_fill_super yet, so
2523 proc fns must be able to handle that! */
2524 rc = class_process_proc_seq_param(PARAM_LLITE, lprocfs_llite_obd_vars,
2531 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2532 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2533 struct inode *i1, struct inode *i2,
2534 const char *name, int namelen,
2535 int mode, __u32 opc, void *data)
2537 LASSERT(i1 != NULL);
2540 /* Do not reuse namelen for something else. */
2542 return ERR_PTR(-EINVAL);
2544 if (namelen > ll_i2sbi(i1)->ll_namelen)
2545 return ERR_PTR(-ENAMETOOLONG);
2547 if (!lu_name_is_valid_2(name, namelen))
2548 return ERR_PTR(-EINVAL);
2551 if (op_data == NULL)
2552 OBD_ALLOC_PTR(op_data);
2554 if (op_data == NULL)
2555 return ERR_PTR(-ENOMEM);
2557 ll_i2gids(op_data->op_suppgids, i1, i2);
2558 op_data->op_fid1 = *ll_inode2fid(i1);
2559 op_data->op_capa1 = ll_mdscapa_get(i1);
2560 if (S_ISDIR(i1->i_mode))
2561 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2564 op_data->op_fid2 = *ll_inode2fid(i2);
2565 op_data->op_capa2 = ll_mdscapa_get(i2);
2566 if (S_ISDIR(i2->i_mode))
2567 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2569 fid_zero(&op_data->op_fid2);
2570 op_data->op_capa2 = NULL;
2573 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2574 op_data->op_cli_flags |= CLI_HASH64;
2576 if (ll_need_32bit_api(ll_i2sbi(i1)))
2577 op_data->op_cli_flags |= CLI_API32;
2579 op_data->op_name = name;
2580 op_data->op_namelen = namelen;
2581 op_data->op_mode = mode;
2582 op_data->op_mod_time = cfs_time_current_sec();
2583 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2584 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2585 op_data->op_cap = cfs_curproc_cap_pack();
2586 op_data->op_bias = 0;
2587 op_data->op_cli_flags = 0;
2588 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2589 filename_is_volatile(name, namelen, NULL))
2590 op_data->op_bias |= MDS_CREATE_VOLATILE;
2591 op_data->op_mds = 0;
2592 op_data->op_data = data;
2594 /* When called by ll_setattr_raw, file is i1. */
2595 if (LLIF_DATA_MODIFIED & ll_i2info(i1)->lli_flags)
2596 op_data->op_bias |= MDS_DATA_MODIFIED;
2601 void ll_finish_md_op_data(struct md_op_data *op_data)
2603 capa_put(op_data->op_capa1);
2604 capa_put(op_data->op_capa2);
2605 OBD_FREE_PTR(op_data);
2608 #ifdef HAVE_SUPEROPS_USE_DENTRY
2609 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2611 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2614 struct ll_sb_info *sbi;
2616 #ifdef HAVE_SUPEROPS_USE_DENTRY
2617 LASSERT((seq != NULL) && (dentry != NULL));
2618 sbi = ll_s2sbi(dentry->d_sb);
2620 LASSERT((seq != NULL) && (vfs != NULL));
2621 sbi = ll_s2sbi(vfs->mnt_sb);
2624 if (sbi->ll_flags & LL_SBI_NOLCK)
2625 seq_puts(seq, ",nolock");
2627 if (sbi->ll_flags & LL_SBI_FLOCK)
2628 seq_puts(seq, ",flock");
2630 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2631 seq_puts(seq, ",localflock");
2633 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2634 seq_puts(seq, ",user_xattr");
2636 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2637 seq_puts(seq, ",lazystatfs");
2639 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2640 seq_puts(seq, ",user_fid2path");
2646 * Get obd name by cmd, and copy out to user space
2648 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2650 struct ll_sb_info *sbi = ll_i2sbi(inode);
2651 struct obd_device *obd;
2654 if (cmd == OBD_IOC_GETDTNAME)
2655 obd = class_exp2obd(sbi->ll_dt_exp);
2656 else if (cmd == OBD_IOC_GETMDNAME)
2657 obd = class_exp2obd(sbi->ll_md_exp);
2664 if (copy_to_user((void *)arg, obd->obd_name,
2665 strlen(obd->obd_name) + 1))
2672 * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
2673 * fsname will be returned in this buffer; otherwise, a static buffer will be
2674 * used to store the fsname and returned to caller.
2676 char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
2678 static char fsname_static[MTI_NAME_MAXLEN];
2679 struct lustre_sb_info *lsi = s2lsi(sb);
2684 /* this means the caller wants to use static buffer
2685 * and it doesn't care about race. Usually this is
2686 * in error reporting path */
2687 buf = fsname_static;
2688 buflen = sizeof(fsname_static);
2691 len = strlen(lsi->lsi_lmd->lmd_profile);
2692 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
2693 if (ptr && (strcmp(ptr, "-client") == 0))
2696 if (unlikely(len >= buflen))
2698 strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
2704 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2711 p.mnt = current->fs->root.mnt;
2713 path = d_path(&p, buf, bufsize);
2718 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2720 char *buf, *path = NULL;
2721 struct dentry *dentry = NULL;
2722 struct ccc_object *obj = cl_inode2ccc(page->mapping->host);
2724 /* this can be called inside spin lock so use GFP_ATOMIC. */
2725 buf = (char *)__get_free_page(GFP_ATOMIC);
2727 dentry = d_find_alias(page->mapping->host);
2729 path = ll_d_path(dentry, buf, PAGE_SIZE);
2733 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2734 "(rc %d)\n", ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
2735 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2736 PFID(&obj->cob_header.coh_lu.loh_fid),
2737 (path && !IS_ERR(path)) ? path : "", ioret);
2743 free_page((unsigned long)buf);
2747 * Compute llite root squash state after a change of root squash
2748 * configuration setting or add/remove of a lnet nid
2750 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2752 struct root_squash_info *squash = &sbi->ll_squash;
2755 lnet_process_id_t id;
2757 /* Update norootsquash flag */
2758 down_write(&squash->rsi_sem);
2759 if (list_empty(&squash->rsi_nosquash_nids))
2760 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2762 /* Do not apply root squash as soon as one of our NIDs is
2763 * in the nosquash_nids list */
2766 while (LNetGetId(i++, &id) != -ENOENT) {
2767 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2769 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2775 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2777 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2779 up_write(&squash->rsi_sem);