4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/llite/llite_lib.c
34 * Lustre Light Super operations
37 #define DEBUG_SUBSYSTEM S_LLITE
39 #include <linux/module.h>
40 #include <linux/random.h>
41 #include <linux/statfs.h>
42 #include <linux/time.h>
43 #include <linux/types.h>
44 #include <libcfs/linux/linux-uuid.h>
45 #include <linux/version.h>
47 #include <linux/user_namespace.h>
48 #ifdef HAVE_UIDGID_HEADER
49 # include <linux/uidgid.h>
51 #include <linux/security.h>
53 #include <uapi/linux/lustre/lustre_ioctl.h>
54 #include <lustre_ha.h>
55 #include <lustre_dlm.h>
56 #include <lprocfs_status.h>
57 #include <lustre_disk.h>
58 #include <uapi/linux/lustre/lustre_param.h>
59 #include <lustre_log.h>
60 #include <cl_object.h>
61 #include <obd_cksum.h>
62 #include "llite_internal.h"
64 struct kmem_cache *ll_file_data_slab;
67 #define log2(n) ffz(~(n))
70 static struct ll_sb_info *ll_init_sbi(void)
72 struct ll_sb_info *sbi = NULL;
74 unsigned long lru_page_max;
83 RETURN(ERR_PTR(-ENOMEM));
85 rc = pcc_super_init(&sbi->ll_pcc_super);
89 spin_lock_init(&sbi->ll_lock);
90 mutex_init(&sbi->ll_lco.lco_lock);
91 spin_lock_init(&sbi->ll_pp_extent_lock);
92 spin_lock_init(&sbi->ll_process_lock);
93 sbi->ll_rw_stats_on = 0;
94 sbi->ll_statfs_max_age = OBD_STATFS_CACHE_SECONDS;
97 pages = si.totalram - si.totalhigh;
98 lru_page_max = pages / 2;
100 sbi->ll_ra_info.ra_async_max_active = 0;
101 sbi->ll_ra_info.ll_readahead_wq =
102 alloc_workqueue("ll-readahead-wq", WQ_UNBOUND,
103 sbi->ll_ra_info.ra_async_max_active);
104 if (!sbi->ll_ra_info.ll_readahead_wq)
105 GOTO(out_pcc, rc = -ENOMEM);
107 /* initialize ll_cache data */
108 sbi->ll_cache = cl_cache_init(lru_page_max);
109 if (sbi->ll_cache == NULL)
110 GOTO(out_destroy_ra, rc = -ENOMEM);
112 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
113 SBI_DEFAULT_READAHEAD_MAX);
114 sbi->ll_ra_info.ra_async_pages_per_file_threshold =
115 sbi->ll_ra_info.ra_max_pages_per_file;
116 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
117 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = -1;
119 sbi->ll_flags |= LL_SBI_VERBOSE;
120 #ifdef ENABLE_CHECKSUM
121 sbi->ll_flags |= LL_SBI_CHECKSUM;
124 sbi->ll_flags |= LL_SBI_FLOCK;
127 #ifdef HAVE_LRU_RESIZE_SUPPORT
128 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
130 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
132 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
133 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
135 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
139 /* metadata statahead is enabled by default */
140 sbi->ll_sa_running_max = LL_SA_RUNNING_DEF;
141 sbi->ll_sa_max = LL_SA_RPC_DEF;
142 atomic_set(&sbi->ll_sa_total, 0);
143 atomic_set(&sbi->ll_sa_wrong, 0);
144 atomic_set(&sbi->ll_sa_running, 0);
145 atomic_set(&sbi->ll_agl_total, 0);
146 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
147 sbi->ll_flags |= LL_SBI_FAST_READ;
148 sbi->ll_flags |= LL_SBI_TINY_WRITE;
151 sbi->ll_squash.rsi_uid = 0;
152 sbi->ll_squash.rsi_gid = 0;
153 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
154 spin_lock_init(&sbi->ll_squash.rsi_lock);
156 /* Per-filesystem file heat */
157 sbi->ll_heat_decay_weight = SBI_DEFAULT_HEAT_DECAY_WEIGHT;
158 sbi->ll_heat_period_second = SBI_DEFAULT_HEAT_PERIOD_SECOND;
161 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
163 pcc_super_fini(&sbi->ll_pcc_super);
169 static void ll_free_sbi(struct super_block *sb)
171 struct ll_sb_info *sbi = ll_s2sbi(sb);
175 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
176 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
177 if (sbi->ll_ra_info.ll_readahead_wq)
178 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
179 if (sbi->ll_cache != NULL) {
180 cl_cache_decref(sbi->ll_cache);
181 sbi->ll_cache = NULL;
183 pcc_super_fini(&sbi->ll_pcc_super);
184 OBD_FREE(sbi, sizeof(*sbi));
189 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
190 struct vfsmount *mnt)
192 struct inode *root = NULL;
193 struct ll_sb_info *sbi = ll_s2sbi(sb);
194 struct obd_statfs *osfs = NULL;
195 struct ptlrpc_request *request = NULL;
196 struct obd_connect_data *data = NULL;
197 struct obd_uuid *uuid;
198 struct md_op_data *op_data;
199 struct lustre_md lmd;
201 int size, err, checksum;
204 sbi->ll_md_obd = class_name2obd(md);
205 if (!sbi->ll_md_obd) {
206 CERROR("MD %s: not setup or attached\n", md);
220 /* pass client page size via ocd_grant_blkbits, the server should report
221 * back its backend blocksize for grant calculation purpose */
222 data->ocd_grant_blkbits = PAGE_SHIFT;
224 /* indicate MDT features supported by this client */
225 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
226 OBD_CONNECT_ATTRFID | OBD_CONNECT_GRANT |
227 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
228 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
229 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
230 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
231 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
232 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
233 OBD_CONNECT_64BITHASH |
234 OBD_CONNECT_EINPROGRESS |
235 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
236 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
237 OBD_CONNECT_MAX_EASIZE |
238 OBD_CONNECT_FLOCK_DEAD |
239 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
240 OBD_CONNECT_OPEN_BY_FID |
241 OBD_CONNECT_DIR_STRIPE |
242 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_CKSUM |
243 OBD_CONNECT_SUBTREE |
244 OBD_CONNECT_MULTIMODRPCS |
245 OBD_CONNECT_GRANT_PARAM |
246 OBD_CONNECT_SHORTIO | OBD_CONNECT_FLAGS2;
248 data->ocd_connect_flags2 = OBD_CONNECT2_DIR_MIGRATE |
249 OBD_CONNECT2_SUM_STATFS |
250 OBD_CONNECT2_OVERSTRIPING |
252 OBD_CONNECT2_LOCK_CONVERT |
253 OBD_CONNECT2_ARCHIVE_ID_ARRAY |
255 OBD_CONNECT2_ASYNC_DISCARD |
258 #ifdef HAVE_LRU_RESIZE_SUPPORT
259 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
260 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
262 #ifdef CONFIG_FS_POSIX_ACL
263 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK |
264 OBD_CONNECT_LARGE_ACL;
267 data->ocd_cksum_types = obd_cksum_types_supported_client();
269 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
270 /* flag mdc connection as lightweight, only used for test
271 * purpose, use with care */
272 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
274 data->ocd_ibits_known = MDS_INODELOCK_FULL;
275 data->ocd_version = LUSTRE_VERSION_CODE;
277 if (sb->s_flags & MS_RDONLY)
278 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
279 if (sbi->ll_flags & LL_SBI_USER_XATTR)
280 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
283 /* Setting this indicates we correctly support S_NOSEC (See kernel
284 * commit 9e1f1de02c2275d7172e18dc4e7c2065777611bf)
286 sb->s_flags |= MS_NOSEC;
289 if (sbi->ll_flags & LL_SBI_FLOCK)
290 sbi->ll_fop = &ll_file_operations_flock;
291 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
292 sbi->ll_fop = &ll_file_operations;
294 sbi->ll_fop = &ll_file_operations_noflock;
296 /* always ping even if server suppress_pings */
297 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
298 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
300 obd_connect_set_secctx(data);
302 #if defined(CONFIG_SECURITY)
303 data->ocd_connect_flags2 |= OBD_CONNECT2_SELINUX_POLICY;
306 data->ocd_brw_size = MD_MAX_BRW_SIZE;
308 err = obd_connect(NULL, &sbi->ll_md_exp, sbi->ll_md_obd,
309 &sbi->ll_sb_uuid, data, sbi->ll_cache);
311 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
312 "recovery, of which this client is not a "
313 "part. Please wait for recovery to complete,"
314 " abort, or time out.\n", md);
317 CERROR("cannot connect to %s: rc = %d\n", md, err);
321 sbi->ll_md_exp->exp_connect_data = *data;
323 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
324 LUSTRE_SEQ_METADATA);
326 CERROR("%s: Can't init metadata layer FID infrastructure, "
327 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
331 /* For mount, we only need fs info from MDT0, and also in DNE, it
332 * can make sure the client can be mounted as long as MDT0 is
334 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
335 ktime_get_seconds() - sbi->ll_statfs_max_age,
336 OBD_STATFS_FOR_MDT0);
338 GOTO(out_md_fid, err);
340 /* This needs to be after statfs to ensure connect has finished.
341 * Note that "data" does NOT contain the valid connect reply.
342 * If connecting to a 1.8 server there will be no LMV device, so
343 * we can access the MDC export directly and exp_connect_flags will
344 * be non-zero, but if accessing an upgraded 2.1 server it will
345 * have the correct flags filled in.
346 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
347 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
348 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
349 valid != CLIENT_CONNECT_MDT_REQD) {
352 OBD_ALLOC_WAIT(buf, PAGE_SIZE);
353 obd_connect_flags2str(buf, PAGE_SIZE,
354 valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
355 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
356 "feature(s) needed for correct operation "
357 "of this client (%s). Please upgrade "
358 "server or downgrade client.\n",
359 sbi->ll_md_exp->exp_obd->obd_name, buf);
360 OBD_FREE(buf, PAGE_SIZE);
361 GOTO(out_md_fid, err = -EPROTO);
364 size = sizeof(*data);
365 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
366 KEY_CONN_DATA, &size, data);
368 CERROR("%s: Get connect data failed: rc = %d\n",
369 sbi->ll_md_exp->exp_obd->obd_name, err);
370 GOTO(out_md_fid, err);
373 LASSERT(osfs->os_bsize);
374 sb->s_blocksize = osfs->os_bsize;
375 sb->s_blocksize_bits = log2(osfs->os_bsize);
376 sb->s_magic = LL_SUPER_MAGIC;
377 sb->s_maxbytes = MAX_LFS_FILESIZE;
378 sbi->ll_namelen = osfs->os_namelen;
379 sbi->ll_mnt.mnt = current->fs->root.mnt;
381 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
382 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
383 LCONSOLE_INFO("Disabling user_xattr feature because "
384 "it is not supported on the server\n");
385 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
388 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
390 sb->s_flags |= MS_POSIXACL;
392 sbi->ll_flags |= LL_SBI_ACL;
394 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
396 sb->s_flags &= ~MS_POSIXACL;
398 sbi->ll_flags &= ~LL_SBI_ACL;
401 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
402 sbi->ll_flags |= LL_SBI_64BIT_HASH;
404 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
405 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
407 if (obd_connect_has_secctx(data))
408 sbi->ll_flags |= LL_SBI_FILE_SECCTX;
410 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
411 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
412 LCONSOLE_INFO("%s: disabling xattr cache due to "
413 "unknown maximum xattr size.\n", dt);
414 } else if (!sbi->ll_xattr_cache_set) {
415 /* If xattr_cache is already set (no matter 0 or 1)
416 * during processing llog, it won't be enabled here. */
417 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
418 sbi->ll_xattr_cache_enabled = 1;
422 sbi->ll_dt_obd = class_name2obd(dt);
423 if (!sbi->ll_dt_obd) {
424 CERROR("DT %s: not setup or attached\n", dt);
425 GOTO(out_md_fid, err = -ENODEV);
428 /* pass client page size via ocd_grant_blkbits, the server should report
429 * back its backend blocksize for grant calculation purpose */
430 data->ocd_grant_blkbits = PAGE_SHIFT;
432 /* indicate OST features supported by this client */
433 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
434 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
435 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
436 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
437 OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
438 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
439 OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
440 OBD_CONNECT_EINPROGRESS |
441 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
442 OBD_CONNECT_LAYOUTLOCK |
443 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
444 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_SHORTIO |
445 OBD_CONNECT_FLAGS2 | OBD_CONNECT_GRANT_SHRINK;
447 /* The client currently advertises support for OBD_CONNECT_LOCKAHEAD_OLD so it
448 * can interoperate with an older version of lockahead which was released prior
449 * to landing in master. This support will be dropped when 2.13 development
450 * starts. At the point, we should not just drop the connect flag (below), we
451 * should also remove the support in the code.
453 * Removing it means a few things:
454 * 1. Remove this section here
455 * 2. Remove CEF_NONBLOCK in ll_file_lockahead()
456 * 3. Remove function exp_connect_lockahead_old
457 * 4. Remove LDLM_FL_LOCKAHEAD_OLD_RESERVED in lustre_dlm_flags.h
459 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 12, 50, 0)
460 data->ocd_connect_flags |= OBD_CONNECT_LOCKAHEAD_OLD;
463 data->ocd_connect_flags2 = OBD_CONNECT2_LOCKAHEAD;
465 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
466 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
468 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
469 * disabled by default, because it can still be enabled on the
470 * fly via /sys. As a consequence, we still need to come to an
471 * agreement on the supported algorithms at connect time
473 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
475 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
476 data->ocd_cksum_types = OBD_CKSUM_ADLER;
478 data->ocd_cksum_types = obd_cksum_types_supported_client();
480 #ifdef HAVE_LRU_RESIZE_SUPPORT
481 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
483 /* always ping even if server suppress_pings */
484 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
485 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
487 CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d "
488 "ocd_grant: %d\n", data->ocd_connect_flags,
489 data->ocd_version, data->ocd_grant);
491 sbi->ll_dt_obd->obd_upcall.onu_owner = &sbi->ll_lco;
492 sbi->ll_dt_obd->obd_upcall.onu_upcall = cl_ocd_update;
494 data->ocd_brw_size = DT_MAX_BRW_SIZE;
496 err = obd_connect(NULL, &sbi->ll_dt_exp, sbi->ll_dt_obd,
497 &sbi->ll_sb_uuid, data, sbi->ll_cache);
499 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
500 "recovery, of which this client is not a "
501 "part. Please wait for recovery to "
502 "complete, abort, or time out.\n", dt);
505 CERROR("%s: Cannot connect to %s: rc = %d\n",
506 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
510 sbi->ll_dt_exp->exp_connect_data = *data;
512 /* Don't change value if it was specified in the config log */
513 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages == -1) {
514 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
515 max_t(unsigned long, SBI_DEFAULT_READAHEAD_WHOLE_MAX,
516 (data->ocd_brw_size >> PAGE_SHIFT));
517 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages >
518 sbi->ll_ra_info.ra_max_pages_per_file)
519 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
520 sbi->ll_ra_info.ra_max_pages_per_file;
523 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
524 LUSTRE_SEQ_METADATA);
526 CERROR("%s: Can't init data layer FID infrastructure, "
527 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
531 mutex_lock(&sbi->ll_lco.lco_lock);
532 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
533 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
534 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
535 mutex_unlock(&sbi->ll_lco.lco_lock);
537 fid_zero(&sbi->ll_root_fid);
538 err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
541 CERROR("cannot mds_connect: rc = %d\n", err);
542 GOTO(out_lock_cn_cb, err);
544 if (!fid_is_sane(&sbi->ll_root_fid)) {
545 CERROR("%s: Invalid root fid "DFID" during mount\n",
546 sbi->ll_md_exp->exp_obd->obd_name,
547 PFID(&sbi->ll_root_fid));
548 GOTO(out_lock_cn_cb, err = -EINVAL);
550 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
552 sb->s_op = &lustre_super_operations;
553 #ifdef HAVE_XATTR_HANDLER_FLAGS
554 sb->s_xattr = ll_xattr_handlers;
556 #if THREAD_SIZE >= 8192 /*b=17630*/
557 sb->s_export_op = &lustre_export_operations;
561 * XXX: move this to after cbd setup? */
562 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
563 if (sbi->ll_flags & LL_SBI_ACL)
564 valid |= OBD_MD_FLACL;
566 OBD_ALLOC_PTR(op_data);
568 GOTO(out_lock_cn_cb, err = -ENOMEM);
570 op_data->op_fid1 = sbi->ll_root_fid;
571 op_data->op_mode = 0;
572 op_data->op_valid = valid;
574 err = md_getattr(sbi->ll_md_exp, op_data, &request);
576 OBD_FREE_PTR(op_data);
578 CERROR("%s: md_getattr failed for root: rc = %d\n",
579 sbi->ll_md_exp->exp_obd->obd_name, err);
580 GOTO(out_lock_cn_cb, err);
583 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
584 sbi->ll_md_exp, &lmd);
586 CERROR("failed to understand root inode md: rc = %d\n", err);
587 ptlrpc_req_finished(request);
588 GOTO(out_lock_cn_cb, err);
591 LASSERT(fid_is_sane(&sbi->ll_root_fid));
592 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
593 sbi->ll_flags & LL_SBI_32BIT_API),
595 md_free_lustre_md(sbi->ll_md_exp, &lmd);
596 ptlrpc_req_finished(request);
599 #ifdef CONFIG_FS_POSIX_ACL
601 posix_acl_release(lmd.posix_acl);
602 lmd.posix_acl = NULL;
605 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
607 CERROR("lustre_lite: bad iget4 for root\n");
611 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
612 if (sbi->ll_checksum_set) {
613 err = obd_set_info_async(NULL, sbi->ll_dt_exp,
614 sizeof(KEY_CHECKSUM), KEY_CHECKSUM,
615 sizeof(checksum), &checksum, NULL);
617 CERROR("%s: Set checksum failed: rc = %d\n",
618 sbi->ll_dt_exp->exp_obd->obd_name, err);
624 sb->s_root = d_make_root(root);
625 if (sb->s_root == NULL) {
627 CERROR("%s: can't make root dentry: rc = %d\n",
628 sbi->ll_fsname, err);
631 #ifdef HAVE_DCACHE_LOCK
632 sb->s_root->d_op = &ll_d_ops;
635 sbi->ll_sdev_orig = sb->s_dev;
637 /* We set sb->s_dev equal on all lustre clients in order to support
638 * NFS export clustering. NFSD requires that the FSID be the same
640 /* s_dev is also used in lt_compare() to compare two fs, but that is
641 * only a node-local comparison. */
642 uuid = obd_get_uuid(sbi->ll_md_exp);
644 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
651 if (sbi->ll_dt_obd) {
652 err = sysfs_create_link(&sbi->ll_kset.kobj,
653 &sbi->ll_dt_obd->obd_kset.kobj,
654 sbi->ll_dt_obd->obd_type->typ_name);
656 CERROR("%s: could not register %s in llite: rc = %d\n",
657 dt, sbi->ll_fsname, err);
662 if (sbi->ll_md_obd) {
663 err = sysfs_create_link(&sbi->ll_kset.kobj,
664 &sbi->ll_md_obd->obd_kset.kobj,
665 sbi->ll_md_obd->obd_type->typ_name);
667 CERROR("%s: could not register %s in llite: rc = %d\n",
668 md, sbi->ll_fsname, err);
678 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
680 obd_disconnect(sbi->ll_dt_exp);
681 sbi->ll_dt_exp = NULL;
682 sbi->ll_dt_obd = NULL;
684 obd_fid_fini(sbi->ll_md_exp->exp_obd);
686 obd_disconnect(sbi->ll_md_exp);
687 sbi->ll_md_exp = NULL;
688 sbi->ll_md_obd = NULL;
697 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
701 size = sizeof(*lmmsize);
702 rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
703 KEY_MAX_EASIZE, &size, lmmsize);
705 CERROR("%s: cannot get max LOV EA size: rc = %d\n",
706 sbi->ll_dt_exp->exp_obd->obd_name, rc);
710 CDEBUG(D_INFO, "max LOV ea size: %d\n", *lmmsize);
713 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
714 KEY_MAX_EASIZE, &size, lmmsize);
716 CERROR("Get max mdsize error rc %d\n", rc);
718 CDEBUG(D_INFO, "max LMV ea size: %d\n", *lmmsize);
724 * Get the value of the default_easize parameter.
726 * \see client_obd::cl_default_mds_easize
728 * \param[in] sbi superblock info for this filesystem
729 * \param[out] lmmsize pointer to storage location for value
731 * \retval 0 on success
732 * \retval negative negated errno on failure
734 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
739 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
740 KEY_DEFAULT_EASIZE, &size, lmmsize);
742 CERROR("Get default mdsize error rc %d\n", rc);
748 * Set the default_easize parameter to the given value.
750 * \see client_obd::cl_default_mds_easize
752 * \param[in] sbi superblock info for this filesystem
753 * \param[in] lmmsize the size to set
755 * \retval 0 on success
756 * \retval negative negated errno on failure
758 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
762 if (lmmsize < sizeof(struct lov_mds_md) ||
763 lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
766 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
767 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
768 sizeof(int), &lmmsize, NULL);
773 static void client_common_put_super(struct super_block *sb)
775 struct ll_sb_info *sbi = ll_s2sbi(sb);
780 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
781 obd_disconnect(sbi->ll_dt_exp);
782 sbi->ll_dt_exp = NULL;
784 ll_debugfs_unregister_super(sb);
786 obd_fid_fini(sbi->ll_md_exp->exp_obd);
787 obd_disconnect(sbi->ll_md_exp);
788 sbi->ll_md_exp = NULL;
793 void ll_kill_super(struct super_block *sb)
795 struct ll_sb_info *sbi;
799 if (!(sb->s_flags & MS_ACTIVE))
803 /* we need restore s_dev from changed for clustred NFS before put_super
804 * because new kernels have cached s_dev and change sb->s_dev in
805 * put_super not affected real removing devices */
807 sb->s_dev = sbi->ll_sdev_orig;
808 sbi->ll_umounting = 1;
810 /* wait running statahead threads to quit */
811 while (atomic_read(&sbi->ll_sa_running) > 0) {
812 set_current_state(TASK_UNINTERRUPTIBLE);
813 schedule_timeout(cfs_time_seconds(1 >> 3));
820 static inline int ll_set_opt(const char *opt, char *data, int fl)
822 if (strncmp(opt, data, strlen(opt)) != 0)
828 /* non-client-specific mount options are parsed in lmd_parse */
829 static int ll_options(char *options, struct ll_sb_info *sbi)
832 char *s1 = options, *s2;
833 int *flags = &sbi->ll_flags;
839 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
842 CDEBUG(D_SUPER, "next opt=%s\n", s1);
843 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
848 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
853 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
858 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
863 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
868 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
873 tmp = ll_set_opt("context", s1, 1);
876 tmp = ll_set_opt("fscontext", s1, 1);
879 tmp = ll_set_opt("defcontext", s1, 1);
882 tmp = ll_set_opt("rootcontext", s1, 1);
885 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
890 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
896 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
899 sbi->ll_checksum_set = 1;
902 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
905 sbi->ll_checksum_set = 1;
908 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
913 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
918 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
923 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
928 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
933 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
938 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
943 tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
948 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
954 s2 = strchr(s1, ',');
962 void ll_lli_init(struct ll_inode_info *lli)
964 lli->lli_inode_magic = LLI_INODE_MAGIC;
966 spin_lock_init(&lli->lli_lock);
967 lli->lli_posix_acl = NULL;
968 /* Do not set lli_fid, it has been initialized already. */
969 fid_zero(&lli->lli_pfid);
970 lli->lli_mds_read_och = NULL;
971 lli->lli_mds_write_och = NULL;
972 lli->lli_mds_exec_och = NULL;
973 lli->lli_open_fd_read_count = 0;
974 lli->lli_open_fd_write_count = 0;
975 lli->lli_open_fd_exec_count = 0;
976 mutex_init(&lli->lli_och_mutex);
977 spin_lock_init(&lli->lli_agl_lock);
978 spin_lock_init(&lli->lli_layout_lock);
979 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
980 lli->lli_clob = NULL;
982 init_rwsem(&lli->lli_xattrs_list_rwsem);
983 mutex_init(&lli->lli_xattrs_enq_lock);
985 LASSERT(lli->lli_vfs_inode.i_mode != 0);
986 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
987 mutex_init(&lli->lli_readdir_mutex);
988 lli->lli_opendir_key = NULL;
990 spin_lock_init(&lli->lli_sa_lock);
991 lli->lli_opendir_pid = 0;
992 lli->lli_sa_enabled = 0;
993 init_rwsem(&lli->lli_lsm_sem);
995 mutex_init(&lli->lli_size_mutex);
996 lli->lli_symlink_name = NULL;
997 init_rwsem(&lli->lli_trunc_sem);
998 range_lock_tree_init(&lli->lli_write_tree);
999 init_rwsem(&lli->lli_glimpse_sem);
1000 lli->lli_glimpse_time = ktime_set(0, 0);
1001 INIT_LIST_HEAD(&lli->lli_agl_list);
1002 lli->lli_agl_index = 0;
1003 lli->lli_async_rc = 0;
1004 spin_lock_init(&lli->lli_heat_lock);
1005 obd_heat_clear(lli->lli_heat_instances, OBD_HEAT_COUNT);
1006 lli->lli_heat_flags = 0;
1007 mutex_init(&lli->lli_pcc_lock);
1008 lli->lli_pcc_state = PCC_STATE_FL_NONE;
1009 lli->lli_pcc_inode = NULL;
1011 mutex_init(&lli->lli_layout_mutex);
1012 memset(lli->lli_jobid, 0, sizeof(lli->lli_jobid));
1015 #define MAX_STRING_SIZE 128
1017 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1019 #define LSI_BDI_INITIALIZED 0x00400000
1021 #ifndef HAVE_BDI_CAP_MAP_COPY
1022 # define BDI_CAP_MAP_COPY 0
1025 static int super_setup_bdi_name(struct super_block *sb, char *fmt, ...)
1027 struct lustre_sb_info *lsi = s2lsi(sb);
1028 char buf[MAX_STRING_SIZE];
1032 err = bdi_init(&lsi->lsi_bdi);
1036 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1037 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1038 lsi->lsi_bdi.name = "lustre";
1039 va_start(args, fmt);
1040 vsnprintf(buf, MAX_STRING_SIZE, fmt, args);
1042 err = bdi_register(&lsi->lsi_bdi, NULL, "%s", buf);
1045 sb->s_bdi = &lsi->lsi_bdi;
1049 #endif /* !HAVE_SUPER_SETUP_BDI_NAME */
1051 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
1053 struct lustre_profile *lprof = NULL;
1054 struct lustre_sb_info *lsi = s2lsi(sb);
1055 struct ll_sb_info *sbi = NULL;
1056 char *dt = NULL, *md = NULL;
1057 char *profilenm = get_profile_name(sb);
1058 struct config_llog_instance *cfg;
1059 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1060 const int instlen = 16 + 2;
1061 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1062 char name[MAX_STRING_SIZE];
1071 /* for ASLR, to map between cfg_instance and hashed ptr */
1072 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1073 profilenm, cfg_instance, sb);
1075 try_module_get(THIS_MODULE);
1079 GOTO(out_free_cfg, err = -ENOMEM);
1081 /* client additional sb info */
1082 lsi->lsi_llsbi = sbi = ll_init_sbi();
1084 GOTO(out_free_cfg, err = PTR_ERR(sbi));
1086 err = ll_options(lsi->lsi_lmd->lmd_opts, sbi);
1088 GOTO(out_free_cfg, err);
1090 #ifndef HAVE_DCACHE_LOCK
1091 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1092 sb->s_d_op = &ll_d_ops;
1095 generate_random_uuid(uuid.b);
1096 snprintf(sbi->ll_sb_uuid.uuid, UUID_SIZE, "%pU", uuid.b);
1098 CDEBUG(D_CONFIG, "llite sb uuid: %s\n", sbi->ll_sb_uuid.uuid);
1101 len = strlen(profilenm);
1102 ptr = strrchr(profilenm, '-');
1103 if (ptr && (strcmp(ptr, "-client") == 0))
1106 if (len > LUSTRE_MAXFSNAME) {
1107 if (unlikely(len >= MAX_STRING_SIZE))
1108 len = MAX_STRING_SIZE - 1;
1109 strncpy(name, profilenm, len);
1111 err = -ENAMETOOLONG;
1112 CERROR("%s: fsname longer than %u characters: rc = %d\n",
1113 name, LUSTRE_MAXFSNAME, err);
1114 GOTO(out_free_cfg, err);
1116 strncpy(sbi->ll_fsname, profilenm, len);
1117 sbi->ll_fsname[len] = '\0';
1120 snprintf(name, sizeof(name), "%.*s-%016lx", len,
1121 profilenm, cfg_instance);
1123 err = super_setup_bdi_name(sb, "%s", name);
1125 GOTO(out_free_cfg, err);
1127 /* Call ll_debugfs_register_super() before lustre_process_log()
1128 * so that "llite.*.*" params can be processed correctly.
1130 err = ll_debugfs_register_super(sb, name);
1132 CERROR("%s: could not register mountpoint in llite: rc = %d\n",
1133 sbi->ll_fsname, err);
1137 /* The cfg_instance is a value unique to this super, in case some
1138 * joker tries to mount the same fs at two mount points.
1140 cfg->cfg_instance = cfg_instance;
1141 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1142 cfg->cfg_callback = class_config_llog_handler;
1143 cfg->cfg_sub_clds = CONFIG_SUB_CLIENT;
1144 /* set up client obds */
1145 err = lustre_process_log(sb, profilenm, cfg);
1147 GOTO(out_debugfs, err);
1149 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1150 lprof = class_get_profile(profilenm);
1151 if (lprof == NULL) {
1152 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1153 " read from the MGS. Does that filesystem "
1154 "exist?\n", profilenm);
1155 GOTO(out_debugfs, err = -EINVAL);
1157 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1158 lprof->lp_md, lprof->lp_dt);
1160 dt_len = strlen(lprof->lp_dt) + instlen + 2;
1161 OBD_ALLOC(dt, dt_len);
1163 GOTO(out_profile, err = -ENOMEM);
1164 snprintf(dt, dt_len - 1, "%s-%016lx", lprof->lp_dt, cfg_instance);
1166 md_len = strlen(lprof->lp_md) + instlen + 2;
1167 OBD_ALLOC(md, md_len);
1169 GOTO(out_free_dt, err = -ENOMEM);
1170 snprintf(md, md_len - 1, "%s-%016lx", lprof->lp_md, cfg_instance);
1172 /* connections, registrations, sb setup */
1173 err = client_common_fill_super(sb, md, dt, mnt);
1175 GOTO(out_free_md, err);
1177 sbi->ll_client_common_fill_super_succeeded = 1;
1181 OBD_FREE(md, md_len);
1184 OBD_FREE(dt, dt_len);
1187 class_put_profile(lprof);
1190 ll_debugfs_unregister_super(sb);
1197 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1198 LCONSOLE_WARN("Mounted %s\n", profilenm);
1200 } /* ll_fill_super */
1202 void ll_put_super(struct super_block *sb)
1204 struct config_llog_instance cfg, params_cfg;
1205 struct obd_device *obd;
1206 struct lustre_sb_info *lsi = s2lsi(sb);
1207 struct ll_sb_info *sbi = ll_s2sbi(sb);
1208 char *profilenm = get_profile_name(sb);
1209 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1211 int next, force = 1, rc = 0;
1215 GOTO(out_no_sbi, 0);
1217 /* Should replace instance_id with something better for ASLR */
1218 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1219 profilenm, cfg_instance, sb);
1221 cfg.cfg_instance = cfg_instance;
1222 lustre_end_log(sb, profilenm, &cfg);
1224 params_cfg.cfg_instance = cfg_instance;
1225 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1227 if (sbi->ll_md_exp) {
1228 obd = class_exp2obd(sbi->ll_md_exp);
1230 force = obd->obd_force;
1233 /* Wait for unstable pages to be committed to stable storage */
1235 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
1236 rc = l_wait_event(sbi->ll_cache->ccc_unstable_waitq,
1237 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0,
1241 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1242 if (force == 0 && rc != -EINTR)
1243 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1245 /* We need to set force before the lov_disconnect in
1246 lustre_common_put_super, since l_d cleans up osc's as well. */
1249 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1251 obd->obd_force = force;
1255 if (sbi->ll_client_common_fill_super_succeeded) {
1256 /* Only if client_common_fill_super succeeded */
1257 client_common_put_super(sb);
1261 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1262 class_manual_cleanup(obd);
1265 if (sbi->ll_flags & LL_SBI_VERBOSE)
1266 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1269 class_del_profile(profilenm);
1271 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1272 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1273 bdi_destroy(&lsi->lsi_bdi);
1274 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1279 lsi->lsi_llsbi = NULL;
1281 lustre_common_put_super(sb);
1283 cl_env_cache_purge(~0);
1285 module_put(THIS_MODULE);
1288 } /* client_put_super */
1290 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1292 struct inode *inode = NULL;
1294 /* NOTE: we depend on atomic igrab() -bzzz */
1295 lock_res_and_lock(lock);
1296 if (lock->l_resource->lr_lvb_inode) {
1297 struct ll_inode_info * lli;
1298 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1299 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1300 inode = igrab(lock->l_resource->lr_lvb_inode);
1302 inode = lock->l_resource->lr_lvb_inode;
1303 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1304 D_WARNING, lock, "lr_lvb_inode %p is "
1305 "bogus: magic %08x",
1306 lock->l_resource->lr_lvb_inode,
1307 lli->lli_inode_magic);
1311 unlock_res_and_lock(lock);
1315 void ll_dir_clear_lsm_md(struct inode *inode)
1317 struct ll_inode_info *lli = ll_i2info(inode);
1319 LASSERT(S_ISDIR(inode->i_mode));
1321 if (lli->lli_lsm_md) {
1322 lmv_free_memmd(lli->lli_lsm_md);
1323 lli->lli_lsm_md = NULL;
1326 if (lli->lli_default_lsm_md) {
1327 lmv_free_memmd(lli->lli_default_lsm_md);
1328 lli->lli_default_lsm_md = NULL;
1332 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1333 const struct lu_fid *fid,
1334 struct lustre_md *md)
1336 struct ll_sb_info *sbi = ll_s2sbi(sb);
1337 struct mdt_body *body = md->body;
1338 struct inode *inode;
1342 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1343 inode = iget_locked(sb, ino);
1344 if (inode == NULL) {
1345 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1346 sbi->ll_fsname, PFID(fid));
1347 RETURN(ERR_PTR(-ENOENT));
1350 if (inode->i_state & I_NEW) {
1351 struct ll_inode_info *lli = ll_i2info(inode);
1352 struct lmv_stripe_md *lsm = md->lmv;
1354 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1355 (body->mbo_mode & S_IFMT);
1356 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1359 inode->i_mtime.tv_sec = 0;
1360 inode->i_atime.tv_sec = 0;
1361 inode->i_ctime.tv_sec = 0;
1364 #ifdef HAVE_BACKING_DEV_INFO
1365 /* initializing backing dev info. */
1366 inode->i_mapping->backing_dev_info =
1367 &s2lsi(inode->i_sb)->lsi_bdi;
1369 inode->i_op = &ll_dir_inode_operations;
1370 inode->i_fop = &ll_dir_operations;
1371 lli->lli_fid = *fid;
1374 LASSERT(lsm != NULL);
1375 /* master object FID */
1376 lli->lli_pfid = body->mbo_fid1;
1377 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1378 lli, PFID(fid), PFID(&lli->lli_pfid));
1379 unlock_new_inode(inode);
1385 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1388 struct lmv_stripe_md *lsm = md->lmv;
1389 struct ll_inode_info *lli = ll_i2info(inode);
1392 LASSERT(lsm != NULL);
1394 CDEBUG(D_INODE, "%s: "DFID" set dir layout:\n",
1395 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1396 lsm_md_dump(D_INODE, lsm);
1398 if (!lmv_dir_striped(lsm))
1401 /* XXX sigh, this lsm_root initialization should be in
1402 * LMV layer, but it needs ll_iget right now, so we
1403 * put this here right now. */
1404 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1405 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1406 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1408 if (!fid_is_sane(fid))
1411 /* Unfortunately ll_iget will call ll_update_inode,
1412 * where the initialization of slave inode is slightly
1413 * different, so it reset lsm_md to NULL to avoid
1414 * initializing lsm for slave inode. */
1415 lsm->lsm_md_oinfo[i].lmo_root =
1416 ll_iget_anon_dir(inode->i_sb, fid, md);
1417 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1418 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1420 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1422 iput(lsm->lsm_md_oinfo[i].lmo_root);
1423 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1429 lli->lli_lsm_md = lsm;
1434 static void ll_update_default_lsm_md(struct inode *inode, struct lustre_md *md)
1436 struct ll_inode_info *lli = ll_i2info(inode);
1438 if (!md->default_lmv) {
1439 /* clear default lsm */
1440 if (lli->lli_default_lsm_md) {
1441 down_write(&lli->lli_lsm_sem);
1442 if (lli->lli_default_lsm_md) {
1443 lmv_free_memmd(lli->lli_default_lsm_md);
1444 lli->lli_default_lsm_md = NULL;
1446 up_write(&lli->lli_lsm_sem);
1448 } else if (lli->lli_default_lsm_md) {
1449 /* update default lsm if it changes */
1450 down_read(&lli->lli_lsm_sem);
1451 if (lli->lli_default_lsm_md &&
1452 !lsm_md_eq(lli->lli_default_lsm_md, md->default_lmv)) {
1453 up_read(&lli->lli_lsm_sem);
1454 down_write(&lli->lli_lsm_sem);
1455 if (lli->lli_default_lsm_md)
1456 lmv_free_memmd(lli->lli_default_lsm_md);
1457 lli->lli_default_lsm_md = md->default_lmv;
1458 lsm_md_dump(D_INODE, md->default_lmv);
1459 md->default_lmv = NULL;
1460 up_write(&lli->lli_lsm_sem);
1462 up_read(&lli->lli_lsm_sem);
1465 /* init default lsm */
1466 down_write(&lli->lli_lsm_sem);
1467 lli->lli_default_lsm_md = md->default_lmv;
1468 lsm_md_dump(D_INODE, md->default_lmv);
1469 md->default_lmv = NULL;
1470 up_write(&lli->lli_lsm_sem);
1474 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1476 struct ll_inode_info *lli = ll_i2info(inode);
1477 struct lmv_stripe_md *lsm = md->lmv;
1482 LASSERT(S_ISDIR(inode->i_mode));
1483 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1484 PFID(ll_inode2fid(inode)));
1486 /* update default LMV */
1487 if (md->default_lmv)
1488 ll_update_default_lsm_md(inode, md);
1491 * no striped information from request, lustre_md from req does not
1492 * include stripeEA, see ll_md_setattr()
1498 * normally dir layout doesn't change, only take read lock to check
1499 * that to avoid blocking other MD operations.
1501 if (lli->lli_lsm_md)
1502 down_read(&lli->lli_lsm_sem);
1504 down_write(&lli->lli_lsm_sem);
1507 * if dir layout mismatch, check whether version is increased, which
1508 * means layout is changed, this happens in dir migration and lfsck.
1510 * foreign LMV should not change.
1512 if (lli->lli_lsm_md && !lsm_md_eq(lli->lli_lsm_md, lsm)) {
1513 if (lmv_dir_striped(lli->lli_lsm_md) &&
1514 lsm->lsm_md_layout_version <=
1515 lli->lli_lsm_md->lsm_md_layout_version) {
1516 CERROR("%s: "DFID" dir layout mismatch:\n",
1517 ll_i2sbi(inode)->ll_fsname,
1518 PFID(&lli->lli_fid));
1519 lsm_md_dump(D_ERROR, lli->lli_lsm_md);
1520 lsm_md_dump(D_ERROR, lsm);
1521 GOTO(unlock, rc = -EINVAL);
1524 /* layout changed, switch to write lock */
1525 up_read(&lli->lli_lsm_sem);
1526 down_write(&lli->lli_lsm_sem);
1527 ll_dir_clear_lsm_md(inode);
1530 /* set directory layout */
1531 if (!lli->lli_lsm_md) {
1532 struct cl_attr *attr;
1534 rc = ll_init_lsm_md(inode, md);
1535 up_write(&lli->lli_lsm_sem);
1539 /* set md->lmv to NULL, so the following free lustre_md
1540 * will not free this lsm */
1544 * md_merge_attr() may take long, since lsm is already set,
1545 * switch to read lock.
1547 down_read(&lli->lli_lsm_sem);
1549 if (!lmv_dir_striped(lli->lli_lsm_md))
1552 OBD_ALLOC_PTR(attr);
1554 GOTO(unlock, rc = -ENOMEM);
1556 /* validate the lsm */
1557 rc = md_merge_attr(ll_i2mdexp(inode), lsm, attr,
1558 ll_md_blocking_ast);
1564 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1565 md->body->mbo_nlink = attr->cat_nlink;
1566 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1567 md->body->mbo_size = attr->cat_size;
1568 if (md->body->mbo_valid & OBD_MD_FLATIME)
1569 md->body->mbo_atime = attr->cat_atime;
1570 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1571 md->body->mbo_ctime = attr->cat_ctime;
1572 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1573 md->body->mbo_mtime = attr->cat_mtime;
1578 up_read(&lli->lli_lsm_sem);
1583 void ll_clear_inode(struct inode *inode)
1585 struct ll_inode_info *lli = ll_i2info(inode);
1586 struct ll_sb_info *sbi = ll_i2sbi(inode);
1590 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1591 PFID(ll_inode2fid(inode)), inode);
1593 if (S_ISDIR(inode->i_mode)) {
1594 /* these should have been cleared in ll_file_release */
1595 LASSERT(lli->lli_opendir_key == NULL);
1596 LASSERT(lli->lli_sai == NULL);
1597 LASSERT(lli->lli_opendir_pid == 0);
1599 pcc_inode_free(inode);
1602 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1604 LASSERT(!lli->lli_open_fd_write_count);
1605 LASSERT(!lli->lli_open_fd_read_count);
1606 LASSERT(!lli->lli_open_fd_exec_count);
1608 if (lli->lli_mds_write_och)
1609 ll_md_real_close(inode, FMODE_WRITE);
1610 if (lli->lli_mds_exec_och)
1611 ll_md_real_close(inode, FMODE_EXEC);
1612 if (lli->lli_mds_read_och)
1613 ll_md_real_close(inode, FMODE_READ);
1615 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1616 OBD_FREE(lli->lli_symlink_name,
1617 strlen(lli->lli_symlink_name) + 1);
1618 lli->lli_symlink_name = NULL;
1621 ll_xattr_cache_destroy(inode);
1623 #ifdef CONFIG_FS_POSIX_ACL
1624 forget_all_cached_acls(inode);
1625 if (lli->lli_posix_acl) {
1626 posix_acl_release(lli->lli_posix_acl);
1627 lli->lli_posix_acl = NULL;
1630 lli->lli_inode_magic = LLI_INODE_DEAD;
1632 if (S_ISDIR(inode->i_mode))
1633 ll_dir_clear_lsm_md(inode);
1634 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1635 LASSERT(list_empty(&lli->lli_agl_list));
1638 * XXX This has to be done before lsm is freed below, because
1639 * cl_object still uses inode lsm.
1641 cl_inode_fini(inode);
1646 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1648 struct lustre_md md;
1649 struct inode *inode = dentry->d_inode;
1650 struct ll_sb_info *sbi = ll_i2sbi(inode);
1651 struct ptlrpc_request *request = NULL;
1655 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1656 LUSTRE_OPC_ANY, NULL);
1657 if (IS_ERR(op_data))
1658 RETURN(PTR_ERR(op_data));
1660 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1662 ptlrpc_req_finished(request);
1663 if (rc == -ENOENT) {
1665 /* Unlinked special device node? Or just a race?
1666 * Pretend we done everything. */
1667 if (!S_ISREG(inode->i_mode) &&
1668 !S_ISDIR(inode->i_mode)) {
1669 ia_valid = op_data->op_attr.ia_valid;
1670 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1671 rc = simple_setattr(dentry, &op_data->op_attr);
1672 op_data->op_attr.ia_valid = ia_valid;
1674 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1675 CERROR("md_setattr fails: rc = %d\n", rc);
1680 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1681 sbi->ll_md_exp, &md);
1683 ptlrpc_req_finished(request);
1687 ia_valid = op_data->op_attr.ia_valid;
1688 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1689 * cache is not cleared yet. */
1690 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1691 if (S_ISREG(inode->i_mode))
1693 rc = simple_setattr(dentry, &op_data->op_attr);
1694 if (S_ISREG(inode->i_mode))
1695 inode_unlock(inode);
1696 op_data->op_attr.ia_valid = ia_valid;
1698 rc = ll_update_inode(inode, &md);
1699 ptlrpc_req_finished(request);
1704 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1705 * object(s) determine the file size and mtime. Otherwise, the MDS will
1706 * keep these values until such a time that objects are allocated for it.
1707 * We do the MDS operations first, as it is checking permissions for us.
1708 * We don't to the MDS RPC if there is nothing that we want to store there,
1709 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1710 * going to do an RPC anyways.
1712 * If we are doing a truncate, we will send the mtime and ctime updates
1713 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1714 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1717 * In case of HSMimport, we only set attr on MDS.
1719 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr,
1720 enum op_xvalid xvalid, bool hsm_import)
1722 struct inode *inode = dentry->d_inode;
1723 struct ll_inode_info *lli = ll_i2info(inode);
1724 struct md_op_data *op_data = NULL;
1729 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1730 "valid %x, hsm_import %d\n",
1731 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid),
1732 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1735 if (attr->ia_valid & ATTR_SIZE) {
1736 /* Check new size against VFS/VM file size limit and rlimit */
1737 rc = inode_newsize_ok(inode, attr->ia_size);
1741 /* The maximum Lustre file size is variable, based on the
1742 * OST maximum object size and number of stripes. This
1743 * needs another check in addition to the VFS check above. */
1744 if (attr->ia_size > ll_file_maxbytes(inode)) {
1745 CDEBUG(D_INODE,"file "DFID" too large %llu > %llu\n",
1746 PFID(&lli->lli_fid), attr->ia_size,
1747 ll_file_maxbytes(inode));
1751 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1754 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1755 if (attr->ia_valid & TIMES_SET_FLAGS) {
1756 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1757 !cfs_capable(CFS_CAP_FOWNER))
1761 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1762 if (!(xvalid & OP_XVALID_CTIME_SET) &&
1763 (attr->ia_valid & ATTR_CTIME)) {
1764 attr->ia_ctime = current_time(inode);
1765 xvalid |= OP_XVALID_CTIME_SET;
1767 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1768 (attr->ia_valid & ATTR_ATIME)) {
1769 attr->ia_atime = current_time(inode);
1770 attr->ia_valid |= ATTR_ATIME_SET;
1772 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1773 (attr->ia_valid & ATTR_MTIME)) {
1774 attr->ia_mtime = current_time(inode);
1775 attr->ia_valid |= ATTR_MTIME_SET;
1778 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1779 CDEBUG(D_INODE, "setting mtime %lld, ctime %lld, now = %lld\n",
1780 (s64)attr->ia_mtime.tv_sec, (s64)attr->ia_ctime.tv_sec,
1781 ktime_get_real_seconds());
1783 if (S_ISREG(inode->i_mode)) {
1784 if (attr->ia_valid & ATTR_SIZE)
1785 inode_dio_write_done(inode);
1786 inode_unlock(inode);
1789 /* We always do an MDS RPC, even if we're only changing the size;
1790 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1792 OBD_ALLOC_PTR(op_data);
1793 if (op_data == NULL)
1794 GOTO(out, rc = -ENOMEM);
1796 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1797 /* If we are changing file size, file content is
1798 * modified, flag it.
1800 xvalid |= OP_XVALID_OWNEROVERRIDE;
1801 op_data->op_bias |= MDS_DATA_MODIFIED;
1802 ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
1805 if (attr->ia_valid & ATTR_FILE) {
1806 struct ll_file_data *fd = LUSTRE_FPRIVATE(attr->ia_file);
1808 if (fd->fd_lease_och)
1809 op_data->op_bias |= MDS_TRUNC_KEEP_LEASE;
1812 op_data->op_attr = *attr;
1813 op_data->op_xvalid = xvalid;
1815 rc = ll_md_setattr(dentry, op_data);
1819 if (!S_ISREG(inode->i_mode) || hsm_import)
1822 if (attr->ia_valid & (ATTR_SIZE | ATTR_ATIME | ATTR_ATIME_SET |
1823 ATTR_MTIME | ATTR_MTIME_SET | ATTR_CTIME) ||
1824 xvalid & OP_XVALID_CTIME_SET) {
1825 bool cached = false;
1827 rc = pcc_inode_setattr(inode, attr, &cached);
1830 CERROR("%s: PCC inode "DFID" setattr failed: "
1832 ll_i2sbi(inode)->ll_fsname,
1833 PFID(&lli->lli_fid), rc);
1837 /* For truncate and utimes sending attributes to OSTs,
1838 * setting mtime/atime to the past will be performed
1839 * under PW [0:EOF] extent lock (new_size:EOF for
1840 * truncate). It may seem excessive to send mtime/atime
1841 * updates to OSTs when not setting times to past, but
1842 * it is necessary due to possible time
1843 * de-synchronization between MDT inode and OST objects
1845 rc = cl_setattr_ost(lli->lli_clob, attr, xvalid, 0);
1849 /* If the file was restored, it needs to set dirty flag.
1851 * We've already sent MDS_DATA_MODIFIED flag in
1852 * ll_md_setattr() for truncate. However, the MDT refuses to
1853 * set the HS_DIRTY flag on released files, so we have to set
1854 * it again if the file has been restored. Please check how
1855 * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
1857 * Please notice that if the file is not released, the previous
1858 * MDS_DATA_MODIFIED has taken effect and usually
1859 * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
1860 * This way we can save an RPC for common open + trunc
1862 if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
1863 struct hsm_state_set hss = {
1864 .hss_valid = HSS_SETMASK,
1865 .hss_setmask = HS_DIRTY,
1869 rc2 = ll_hsm_state_set(inode, &hss);
1870 /* truncate and write can happen at the same time, so that
1871 * the file can be set modified even though the file is not
1872 * restored from released state, and ll_hsm_state_set() is
1873 * not applicable for the file, and rc2 < 0 is normal in this
1876 CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
1877 PFID(ll_inode2fid(inode)), rc2);
1882 if (op_data != NULL)
1883 ll_finish_md_op_data(op_data);
1885 if (S_ISREG(inode->i_mode)) {
1887 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1888 inode_dio_wait(inode);
1889 /* Once we've got the i_mutex, it's safe to set the S_NOSEC
1890 * flag. ll_update_inode (called from ll_md_setattr), clears
1891 * inode flags, so there is a gap where S_NOSEC is not set.
1892 * This can cause a writer to take the i_mutex unnecessarily,
1893 * but this is safe to do and should be rare. */
1894 inode_has_no_xattr(inode);
1897 ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
1898 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1903 int ll_setattr(struct dentry *de, struct iattr *attr)
1905 int mode = de->d_inode->i_mode;
1906 enum op_xvalid xvalid = 0;
1908 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1909 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1910 xvalid |= OP_XVALID_OWNEROVERRIDE;
1912 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1913 (ATTR_SIZE|ATTR_MODE)) &&
1914 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1915 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1916 !(attr->ia_mode & S_ISGID))))
1917 attr->ia_valid |= ATTR_FORCE;
1919 if ((attr->ia_valid & ATTR_MODE) &&
1921 !(attr->ia_mode & S_ISUID) &&
1922 !(attr->ia_valid & ATTR_KILL_SUID))
1923 attr->ia_valid |= ATTR_KILL_SUID;
1925 if ((attr->ia_valid & ATTR_MODE) &&
1926 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1927 !(attr->ia_mode & S_ISGID) &&
1928 !(attr->ia_valid & ATTR_KILL_SGID))
1929 attr->ia_valid |= ATTR_KILL_SGID;
1931 return ll_setattr_raw(de, attr, xvalid, false);
1934 int ll_statfs_internal(struct ll_sb_info *sbi, struct obd_statfs *osfs,
1937 struct obd_statfs obd_osfs = { 0 };
1942 max_age = ktime_get_seconds() - sbi->ll_statfs_max_age;
1944 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1948 osfs->os_type = LL_SUPER_MAGIC;
1950 CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
1951 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree, osfs->os_files);
1953 if (osfs->os_state & OS_STATE_SUM)
1956 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1957 flags |= OBD_STATFS_NODELAY;
1959 rc = obd_statfs(NULL, sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1960 if (rc) /* Possibly a filesystem with no OSTs. Report MDT totals. */
1963 CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
1964 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1967 osfs->os_bsize = obd_osfs.os_bsize;
1968 osfs->os_blocks = obd_osfs.os_blocks;
1969 osfs->os_bfree = obd_osfs.os_bfree;
1970 osfs->os_bavail = obd_osfs.os_bavail;
1972 /* If we have _some_ OSTs, but don't have as many free objects on the
1973 * OSTs as inodes on the MDTs, reduce the reported number of inodes
1974 * to compensate, so that the "inodes in use" number is correct.
1975 * This should be kept in sync with lod_statfs() behaviour.
1977 if (obd_osfs.os_files && obd_osfs.os_ffree < osfs->os_ffree) {
1978 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1980 osfs->os_ffree = obd_osfs.os_ffree;
1986 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1988 struct super_block *sb = de->d_sb;
1989 struct obd_statfs osfs;
1990 __u64 fsid = huge_encode_dev(sb->s_dev);
1993 CDEBUG(D_VFSTRACE, "VFS Op: at %llu jiffies\n", get_jiffies_64());
1994 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STATFS, 1);
1996 /* Some amount of caching on the client is allowed */
1997 rc = ll_statfs_internal(ll_s2sbi(sb), &osfs, OBD_STATFS_SUM);
2001 statfs_unpack(sfs, &osfs);
2003 /* We need to downshift for all 32-bit kernels, because we can't
2004 * tell if the kernel is being called via sys_statfs64() or not.
2005 * Stop before overflowing f_bsize - in which case it is better
2006 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
2007 if (sizeof(long) < 8) {
2008 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
2011 osfs.os_blocks >>= 1;
2012 osfs.os_bfree >>= 1;
2013 osfs.os_bavail >>= 1;
2017 sfs->f_blocks = osfs.os_blocks;
2018 sfs->f_bfree = osfs.os_bfree;
2019 sfs->f_bavail = osfs.os_bavail;
2020 sfs->f_fsid.val[0] = (__u32)fsid;
2021 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
2025 void ll_inode_size_lock(struct inode *inode)
2027 struct ll_inode_info *lli;
2029 LASSERT(!S_ISDIR(inode->i_mode));
2031 lli = ll_i2info(inode);
2032 mutex_lock(&lli->lli_size_mutex);
2035 void ll_inode_size_unlock(struct inode *inode)
2037 struct ll_inode_info *lli;
2039 lli = ll_i2info(inode);
2040 mutex_unlock(&lli->lli_size_mutex);
2043 void ll_update_inode_flags(struct inode *inode, int ext_flags)
2045 inode->i_flags = ll_ext_to_inode_flags(ext_flags);
2046 if (ext_flags & LUSTRE_PROJINHERIT_FL)
2047 ll_file_set_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT);
2049 ll_file_clear_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT);
2052 int ll_update_inode(struct inode *inode, struct lustre_md *md)
2054 struct ll_inode_info *lli = ll_i2info(inode);
2055 struct mdt_body *body = md->body;
2056 struct ll_sb_info *sbi = ll_i2sbi(inode);
2059 if (body->mbo_valid & OBD_MD_FLEASIZE) {
2060 rc = cl_file_inode_init(inode, md);
2065 if (S_ISDIR(inode->i_mode)) {
2066 rc = ll_update_lsm_md(inode, md);
2071 #ifdef CONFIG_FS_POSIX_ACL
2072 if (body->mbo_valid & OBD_MD_FLACL) {
2073 spin_lock(&lli->lli_lock);
2074 if (lli->lli_posix_acl)
2075 posix_acl_release(lli->lli_posix_acl);
2076 lli->lli_posix_acl = md->posix_acl;
2077 spin_unlock(&lli->lli_lock);
2080 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
2081 sbi->ll_flags & LL_SBI_32BIT_API);
2082 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
2084 if (body->mbo_valid & OBD_MD_FLATIME) {
2085 if (body->mbo_atime > inode->i_atime.tv_sec)
2086 inode->i_atime.tv_sec = body->mbo_atime;
2087 lli->lli_atime = body->mbo_atime;
2090 if (body->mbo_valid & OBD_MD_FLMTIME) {
2091 if (body->mbo_mtime > inode->i_mtime.tv_sec) {
2093 "setting ino %lu mtime from %lld to %llu\n",
2094 inode->i_ino, (s64)inode->i_mtime.tv_sec,
2096 inode->i_mtime.tv_sec = body->mbo_mtime;
2098 lli->lli_mtime = body->mbo_mtime;
2101 if (body->mbo_valid & OBD_MD_FLCTIME) {
2102 if (body->mbo_ctime > inode->i_ctime.tv_sec)
2103 inode->i_ctime.tv_sec = body->mbo_ctime;
2104 lli->lli_ctime = body->mbo_ctime;
2107 /* Clear i_flags to remove S_NOSEC before permissions are updated */
2108 if (body->mbo_valid & OBD_MD_FLFLAGS)
2109 ll_update_inode_flags(inode, body->mbo_flags);
2110 if (body->mbo_valid & OBD_MD_FLMODE)
2111 inode->i_mode = (inode->i_mode & S_IFMT) |
2112 (body->mbo_mode & ~S_IFMT);
2114 if (body->mbo_valid & OBD_MD_FLTYPE)
2115 inode->i_mode = (inode->i_mode & ~S_IFMT) |
2116 (body->mbo_mode & S_IFMT);
2118 LASSERT(inode->i_mode != 0);
2119 if (S_ISREG(inode->i_mode))
2120 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
2121 LL_MAX_BLKSIZE_BITS);
2123 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
2125 if (body->mbo_valid & OBD_MD_FLUID)
2126 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
2127 if (body->mbo_valid & OBD_MD_FLGID)
2128 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
2129 if (body->mbo_valid & OBD_MD_FLPROJID)
2130 lli->lli_projid = body->mbo_projid;
2131 if (body->mbo_valid & OBD_MD_FLNLINK)
2132 set_nlink(inode, body->mbo_nlink);
2133 if (body->mbo_valid & OBD_MD_FLRDEV)
2134 inode->i_rdev = old_decode_dev(body->mbo_rdev);
2136 if (body->mbo_valid & OBD_MD_FLID) {
2137 /* FID shouldn't be changed! */
2138 if (fid_is_sane(&lli->lli_fid)) {
2139 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
2140 "Trying to change FID "DFID
2141 " to the "DFID", inode "DFID"(%p)\n",
2142 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
2143 PFID(ll_inode2fid(inode)), inode);
2145 lli->lli_fid = body->mbo_fid1;
2149 LASSERT(fid_seq(&lli->lli_fid) != 0);
2151 if (body->mbo_valid & OBD_MD_FLSIZE) {
2152 i_size_write(inode, body->mbo_size);
2154 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
2155 PFID(ll_inode2fid(inode)),
2156 (unsigned long long)body->mbo_size);
2158 if (body->mbo_valid & OBD_MD_FLBLOCKS)
2159 inode->i_blocks = body->mbo_blocks;
2162 if (body->mbo_valid & OBD_MD_TSTATE) {
2163 /* Set LLIF_FILE_RESTORING if restore ongoing and
2164 * clear it when done to ensure to start again
2165 * glimpsing updated attrs
2167 if (body->mbo_t_state & MS_RESTORE)
2168 ll_file_set_flag(lli, LLIF_FILE_RESTORING);
2170 ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
2176 int ll_read_inode2(struct inode *inode, void *opaque)
2178 struct lustre_md *md = opaque;
2179 struct ll_inode_info *lli = ll_i2info(inode);
2183 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2184 PFID(&lli->lli_fid), inode);
2186 /* Core attributes from the MDS first. This is a new inode, and
2187 * the VFS doesn't zero times in the core inode so we have to do
2188 * it ourselves. They will be overwritten by either MDS or OST
2189 * attributes - we just need to make sure they aren't newer.
2191 inode->i_mtime.tv_sec = 0;
2192 inode->i_atime.tv_sec = 0;
2193 inode->i_ctime.tv_sec = 0;
2195 rc = ll_update_inode(inode, md);
2199 /* OIDEBUG(inode); */
2201 #ifdef HAVE_BACKING_DEV_INFO
2202 /* initializing backing dev info. */
2203 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2205 if (S_ISREG(inode->i_mode)) {
2206 struct ll_sb_info *sbi = ll_i2sbi(inode);
2207 inode->i_op = &ll_file_inode_operations;
2208 inode->i_fop = sbi->ll_fop;
2209 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2211 } else if (S_ISDIR(inode->i_mode)) {
2212 inode->i_op = &ll_dir_inode_operations;
2213 inode->i_fop = &ll_dir_operations;
2215 } else if (S_ISLNK(inode->i_mode)) {
2216 inode->i_op = &ll_fast_symlink_inode_operations;
2219 inode->i_op = &ll_special_inode_operations;
2221 init_special_inode(inode, inode->i_mode,
2230 void ll_delete_inode(struct inode *inode)
2232 struct ll_inode_info *lli = ll_i2info(inode);
2233 struct address_space *mapping = &inode->i_data;
2234 unsigned long nrpages;
2237 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL) {
2238 /* It is last chance to write out dirty pages,
2239 * otherwise we may lose data while umount.
2241 * If i_nlink is 0 then just discard data. This is safe because
2242 * local inode gets i_nlink 0 from server only for the last
2243 * unlink, so that file is not opened somewhere else
2245 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, inode->i_nlink ?
2246 CL_FSYNC_LOCAL : CL_FSYNC_DISCARD, 1);
2248 truncate_inode_pages_final(mapping);
2250 /* Workaround for LU-118: Note nrpages may not be totally updated when
2251 * truncate_inode_pages() returns, as there can be a page in the process
2252 * of deletion (inside __delete_from_page_cache()) in the specified
2253 * range. Thus mapping->nrpages can be non-zero when this function
2254 * returns even after truncation of the whole mapping. Only do this if
2255 * npages isn't already zero.
2257 nrpages = mapping->nrpages;
2259 xa_lock_irq(&mapping->i_pages);
2260 nrpages = mapping->nrpages;
2261 xa_unlock_irq(&mapping->i_pages);
2262 } /* Workaround end */
2264 LASSERTF(nrpages == 0, "%s: inode="DFID"(%p) nrpages=%lu, "
2265 "see https://jira.whamcloud.com/browse/LU-118\n",
2266 ll_i2sbi(inode)->ll_fsname,
2267 PFID(ll_inode2fid(inode)), inode, nrpages);
2269 #ifdef HAVE_SBOPS_EVICT_INODE
2270 ll_clear_inode(inode);
2277 int ll_iocontrol(struct inode *inode, struct file *file,
2278 unsigned int cmd, unsigned long arg)
2280 struct ll_sb_info *sbi = ll_i2sbi(inode);
2281 struct ptlrpc_request *req = NULL;
2286 case FS_IOC_GETFLAGS: {
2287 struct mdt_body *body;
2288 struct md_op_data *op_data;
2290 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2291 0, 0, LUSTRE_OPC_ANY,
2293 if (IS_ERR(op_data))
2294 RETURN(PTR_ERR(op_data));
2296 op_data->op_valid = OBD_MD_FLFLAGS;
2297 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2298 ll_finish_md_op_data(op_data);
2300 CERROR("%s: failure inode "DFID": rc = %d\n",
2301 sbi->ll_md_exp->exp_obd->obd_name,
2302 PFID(ll_inode2fid(inode)), rc);
2306 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2308 flags = body->mbo_flags;
2310 ptlrpc_req_finished(req);
2312 RETURN(put_user(flags, (int __user *)arg));
2314 case FS_IOC_SETFLAGS: {
2316 struct md_op_data *op_data;
2317 struct cl_object *obj;
2318 struct fsxattr fa = { 0 };
2320 if (get_user(flags, (int __user *)arg))
2323 fa.fsx_projid = ll_i2info(inode)->lli_projid;
2324 if (flags & LUSTRE_PROJINHERIT_FL)
2325 fa.fsx_xflags = FS_XFLAG_PROJINHERIT;
2327 rc = ll_ioctl_check_project(inode, &fa);
2331 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2332 LUSTRE_OPC_ANY, NULL);
2333 if (IS_ERR(op_data))
2334 RETURN(PTR_ERR(op_data));
2336 op_data->op_attr_flags = flags;
2337 op_data->op_xvalid |= OP_XVALID_FLAGS;
2338 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2339 ll_finish_md_op_data(op_data);
2340 ptlrpc_req_finished(req);
2344 ll_update_inode_flags(inode, flags);
2346 obj = ll_i2info(inode)->lli_clob;
2350 OBD_ALLOC_PTR(attr);
2354 rc = cl_setattr_ost(obj, attr, OP_XVALID_FLAGS, flags);
2366 int ll_flush_ctx(struct inode *inode)
2368 struct ll_sb_info *sbi = ll_i2sbi(inode);
2370 CDEBUG(D_SEC, "flush context for user %d\n",
2371 from_kuid(&init_user_ns, current_uid()));
2373 obd_set_info_async(NULL, sbi->ll_md_exp,
2374 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2376 obd_set_info_async(NULL, sbi->ll_dt_exp,
2377 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2382 /* umount -f client means force down, don't save state */
2383 void ll_umount_begin(struct super_block *sb)
2385 struct ll_sb_info *sbi = ll_s2sbi(sb);
2386 struct obd_device *obd;
2387 struct obd_ioctl_data *ioc_data;
2388 struct l_wait_info lwi;
2389 wait_queue_head_t waitq;
2392 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2393 sb->s_count, atomic_read(&sb->s_active));
2395 obd = class_exp2obd(sbi->ll_md_exp);
2397 CERROR("Invalid MDC connection handle %#llx\n",
2398 sbi->ll_md_exp->exp_handle.h_cookie);
2404 obd = class_exp2obd(sbi->ll_dt_exp);
2406 CERROR("Invalid LOV connection handle %#llx\n",
2407 sbi->ll_dt_exp->exp_handle.h_cookie);
2413 OBD_ALLOC_PTR(ioc_data);
2415 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2416 sizeof *ioc_data, ioc_data, NULL);
2418 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2419 sizeof *ioc_data, ioc_data, NULL);
2421 OBD_FREE_PTR(ioc_data);
2424 /* Really, we'd like to wait until there are no requests outstanding,
2425 * and then continue. For now, we just periodically checking for vfs
2426 * to decrement mnt_cnt and hope to finish it within 10sec.
2428 init_waitqueue_head(&waitq);
2429 lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(10),
2430 cfs_time_seconds(1), NULL, NULL);
2431 l_wait_event(waitq, may_umount(sbi->ll_mnt.mnt), &lwi);
2436 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2438 struct ll_sb_info *sbi = ll_s2sbi(sb);
2439 char *profilenm = get_profile_name(sb);
2443 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2444 read_only = *flags & MS_RDONLY;
2445 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2446 sizeof(KEY_READ_ONLY),
2447 KEY_READ_ONLY, sizeof(read_only),
2450 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2451 profilenm, read_only ?
2452 "read-only" : "read-write", err);
2457 sb->s_flags |= MS_RDONLY;
2459 sb->s_flags &= ~MS_RDONLY;
2461 if (sbi->ll_flags & LL_SBI_VERBOSE)
2462 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2463 read_only ? "read-only" : "read-write");
2469 * Cleanup the open handle that is cached on MDT-side.
2471 * For open case, the client side open handling thread may hit error
2472 * after the MDT grant the open. Under such case, the client should
2473 * send close RPC to the MDT as cleanup; otherwise, the open handle
2474 * on the MDT will be leaked there until the client umount or evicted.
2476 * In further, if someone unlinked the file, because the open handle
2477 * holds the reference on such file/object, then it will block the
2478 * subsequent threads that want to locate such object via FID.
2480 * \param[in] sb super block for this file-system
2481 * \param[in] open_req pointer to the original open request
2483 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
2485 struct mdt_body *body;
2486 struct md_op_data *op_data;
2487 struct ptlrpc_request *close_req = NULL;
2488 struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
2491 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
2492 OBD_ALLOC_PTR(op_data);
2493 if (op_data == NULL) {
2494 CWARN("%s: cannot allocate op_data to release open handle for "
2495 DFID"\n", ll_s2sbi(sb)->ll_fsname, PFID(&body->mbo_fid1));
2500 op_data->op_fid1 = body->mbo_fid1;
2501 op_data->op_open_handle = body->mbo_open_handle;
2502 op_data->op_mod_time = ktime_get_real_seconds();
2503 md_close(exp, op_data, NULL, &close_req);
2504 ptlrpc_req_finished(close_req);
2505 ll_finish_md_op_data(op_data);
2510 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2511 struct super_block *sb, struct lookup_intent *it)
2513 struct ll_sb_info *sbi = NULL;
2514 struct lustre_md md = { NULL };
2515 bool default_lmv_deleted = false;
2520 LASSERT(*inode || sb);
2521 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2522 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2523 sbi->ll_md_exp, &md);
2528 * clear default_lmv only if intent_getattr reply doesn't contain it.
2529 * but it needs to be done after iget, check this early because
2530 * ll_update_lsm_md() may change md.
2532 if (it && (it->it_op & (IT_LOOKUP | IT_GETATTR)) &&
2533 S_ISDIR(md.body->mbo_mode) && !md.default_lmv)
2534 default_lmv_deleted = true;
2537 rc = ll_update_inode(*inode, &md);
2541 LASSERT(sb != NULL);
2544 * At this point server returns to client's same fid as client
2545 * generated for creating. So using ->fid1 is okay here.
2547 if (!fid_is_sane(&md.body->mbo_fid1)) {
2548 CERROR("%s: Fid is insane "DFID"\n",
2550 PFID(&md.body->mbo_fid1));
2551 GOTO(out, rc = -EINVAL);
2554 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2555 sbi->ll_flags & LL_SBI_32BIT_API),
2557 if (IS_ERR(*inode)) {
2558 #ifdef CONFIG_FS_POSIX_ACL
2560 posix_acl_release(md.posix_acl);
2561 md.posix_acl = NULL;
2564 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2566 CERROR("new_inode -fatal: rc %d\n", rc);
2571 /* Handling piggyback layout lock.
2572 * Layout lock can be piggybacked by getattr and open request.
2573 * The lsm can be applied to inode only if it comes with a layout lock
2574 * otherwise correct layout may be overwritten, for example:
2575 * 1. proc1: mdt returns a lsm but not granting layout
2576 * 2. layout was changed by another client
2577 * 3. proc2: refresh layout and layout lock granted
2578 * 4. proc1: to apply a stale layout */
2579 if (it != NULL && it->it_lock_mode != 0) {
2580 struct lustre_handle lockh;
2581 struct ldlm_lock *lock;
2583 lockh.cookie = it->it_lock_handle;
2584 lock = ldlm_handle2lock(&lockh);
2585 LASSERT(lock != NULL);
2586 if (ldlm_has_layout(lock)) {
2587 struct cl_object_conf conf;
2589 memset(&conf, 0, sizeof(conf));
2590 conf.coc_opc = OBJECT_CONF_SET;
2591 conf.coc_inode = *inode;
2592 conf.coc_lock = lock;
2593 conf.u.coc_layout = md.layout;
2594 (void)ll_layout_conf(*inode, &conf);
2596 LDLM_LOCK_PUT(lock);
2599 if (default_lmv_deleted)
2600 ll_update_default_lsm_md(*inode, &md);
2605 /* cleanup will be done if necessary */
2606 md_free_lustre_md(sbi->ll_md_exp, &md);
2608 if (rc != 0 && it != NULL && it->it_op & IT_OPEN)
2609 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2614 int ll_obd_statfs(struct inode *inode, void __user *arg)
2616 struct ll_sb_info *sbi = NULL;
2617 struct obd_export *exp;
2619 struct obd_ioctl_data *data = NULL;
2623 if (!inode || !(sbi = ll_i2sbi(inode)))
2624 GOTO(out_statfs, rc = -EINVAL);
2626 rc = obd_ioctl_getdata(&buf, &len, arg);
2628 GOTO(out_statfs, rc);
2631 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2632 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2633 GOTO(out_statfs, rc = -EINVAL);
2635 if (data->ioc_inllen1 != sizeof(__u32) ||
2636 data->ioc_inllen2 != sizeof(__u32) ||
2637 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2638 data->ioc_plen2 != sizeof(struct obd_uuid))
2639 GOTO(out_statfs, rc = -EINVAL);
2641 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2642 if (type & LL_STATFS_LMV)
2643 exp = sbi->ll_md_exp;
2644 else if (type & LL_STATFS_LOV)
2645 exp = sbi->ll_dt_exp;
2647 GOTO(out_statfs, rc = -ENODEV);
2649 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2651 GOTO(out_statfs, rc);
2653 OBD_FREE_LARGE(buf, len);
2658 * this is normally called in ll_fini_md_op_data(), but sometimes it needs to
2659 * be called early to avoid deadlock.
2661 void ll_unlock_md_op_lsm(struct md_op_data *op_data)
2663 if (op_data->op_mea2_sem) {
2664 up_read(op_data->op_mea2_sem);
2665 op_data->op_mea2_sem = NULL;
2668 if (op_data->op_mea1_sem) {
2669 up_read(op_data->op_mea1_sem);
2670 op_data->op_mea1_sem = NULL;
2674 /* this function prepares md_op_data hint for passing it down to MD stack. */
2675 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
2676 struct inode *i1, struct inode *i2,
2677 const char *name, size_t namelen,
2678 __u32 mode, enum md_op_code opc,
2681 LASSERT(i1 != NULL);
2684 /* Do not reuse namelen for something else. */
2686 return ERR_PTR(-EINVAL);
2688 if (namelen > ll_i2sbi(i1)->ll_namelen)
2689 return ERR_PTR(-ENAMETOOLONG);
2691 if (!lu_name_is_valid_2(name, namelen))
2692 return ERR_PTR(-EINVAL);
2695 if (op_data == NULL)
2696 OBD_ALLOC_PTR(op_data);
2698 if (op_data == NULL)
2699 return ERR_PTR(-ENOMEM);
2701 ll_i2gids(op_data->op_suppgids, i1, i2);
2702 op_data->op_fid1 = *ll_inode2fid(i1);
2703 op_data->op_code = opc;
2705 if (S_ISDIR(i1->i_mode)) {
2706 down_read(&ll_i2info(i1)->lli_lsm_sem);
2707 op_data->op_mea1_sem = &ll_i2info(i1)->lli_lsm_sem;
2708 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2709 op_data->op_default_mea1 = ll_i2info(i1)->lli_default_lsm_md;
2713 op_data->op_fid2 = *ll_inode2fid(i2);
2714 if (S_ISDIR(i2->i_mode)) {
2716 down_read(&ll_i2info(i2)->lli_lsm_sem);
2717 op_data->op_mea2_sem =
2718 &ll_i2info(i2)->lli_lsm_sem;
2720 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2723 fid_zero(&op_data->op_fid2);
2726 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2727 op_data->op_cli_flags |= CLI_HASH64;
2729 if (ll_need_32bit_api(ll_i2sbi(i1)))
2730 op_data->op_cli_flags |= CLI_API32;
2732 op_data->op_name = name;
2733 op_data->op_namelen = namelen;
2734 op_data->op_mode = mode;
2735 op_data->op_mod_time = ktime_get_real_seconds();
2736 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2737 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2738 op_data->op_cap = cfs_curproc_cap_pack();
2739 op_data->op_mds = 0;
2740 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2741 filename_is_volatile(name, namelen, &op_data->op_mds)) {
2742 op_data->op_bias |= MDS_CREATE_VOLATILE;
2744 op_data->op_data = data;
2749 void ll_finish_md_op_data(struct md_op_data *op_data)
2751 ll_unlock_md_op_lsm(op_data);
2752 security_release_secctx(op_data->op_file_secctx,
2753 op_data->op_file_secctx_size);
2754 OBD_FREE_PTR(op_data);
2757 #ifdef HAVE_SUPEROPS_USE_DENTRY
2758 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2760 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2763 struct ll_sb_info *sbi;
2765 #ifdef HAVE_SUPEROPS_USE_DENTRY
2766 LASSERT((seq != NULL) && (dentry != NULL));
2767 sbi = ll_s2sbi(dentry->d_sb);
2769 LASSERT((seq != NULL) && (vfs != NULL));
2770 sbi = ll_s2sbi(vfs->mnt_sb);
2773 if (sbi->ll_flags & LL_SBI_NOLCK)
2774 seq_puts(seq, ",nolock");
2776 if (sbi->ll_flags & LL_SBI_FLOCK)
2777 seq_puts(seq, ",flock");
2779 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2780 seq_puts(seq, ",localflock");
2782 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2783 seq_puts(seq, ",user_xattr");
2785 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2786 seq_puts(seq, ",lazystatfs");
2788 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2789 seq_puts(seq, ",user_fid2path");
2791 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
2792 seq_puts(seq, ",always_ping");
2798 * Get obd name by cmd, and copy out to user space
2800 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2802 struct ll_sb_info *sbi = ll_i2sbi(inode);
2803 struct obd_device *obd;
2806 if (cmd == OBD_IOC_GETDTNAME)
2807 obd = class_exp2obd(sbi->ll_dt_exp);
2808 else if (cmd == OBD_IOC_GETMDNAME)
2809 obd = class_exp2obd(sbi->ll_md_exp);
2816 if (copy_to_user((void __user *)arg, obd->obd_name,
2817 strlen(obd->obd_name) + 1))
2823 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2830 p.mnt = current->fs->root.mnt;
2832 path = d_path(&p, buf, bufsize);
2837 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2839 char *buf, *path = NULL;
2840 struct dentry *dentry = NULL;
2841 struct inode *inode = page->mapping->host;
2843 /* this can be called inside spin lock so use GFP_ATOMIC. */
2844 buf = (char *)__get_free_page(GFP_ATOMIC);
2846 dentry = d_find_alias(page->mapping->host);
2848 path = ll_d_path(dentry, buf, PAGE_SIZE);
2852 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2853 "(rc %d)\n", ll_i2sbi(inode)->ll_fsname,
2854 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2855 PFID(ll_inode2fid(inode)),
2856 (path && !IS_ERR(path)) ? path : "", ioret);
2862 free_page((unsigned long)buf);
2865 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
2866 struct lov_user_md **kbuf)
2868 struct lov_user_md lum;
2872 if (copy_from_user(&lum, md, sizeof(lum)))
2875 lum_size = ll_lov_user_md_size(&lum);
2879 OBD_ALLOC(*kbuf, lum_size);
2883 if (copy_from_user(*kbuf, md, lum_size) != 0) {
2884 OBD_FREE(*kbuf, lum_size);
2892 * Compute llite root squash state after a change of root squash
2893 * configuration setting or add/remove of a lnet nid
2895 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2897 struct root_squash_info *squash = &sbi->ll_squash;
2900 struct lnet_process_id id;
2902 /* Update norootsquash flag */
2903 spin_lock(&squash->rsi_lock);
2904 if (list_empty(&squash->rsi_nosquash_nids))
2905 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2907 /* Do not apply root squash as soon as one of our NIDs is
2908 * in the nosquash_nids list */
2911 while (LNetGetId(i++, &id) != -ENOENT) {
2912 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2914 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2920 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2922 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2924 spin_unlock(&squash->rsi_lock);
2928 * Parse linkea content to extract information about a given hardlink
2930 * \param[in] ldata - Initialized linkea data
2931 * \param[in] linkno - Link identifier
2932 * \param[out] parent_fid - The entry's parent FID
2933 * \param[out] ln - Entry name destination buffer
2935 * \retval 0 on success
2936 * \retval Appropriate negative error code on failure
2938 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
2939 struct lu_fid *parent_fid, struct lu_name *ln)
2945 rc = linkea_init_with_rec(ldata);
2949 if (linkno >= ldata->ld_leh->leh_reccount)
2950 /* beyond last link */
2953 linkea_first_entry(ldata);
2954 for (idx = 0; ldata->ld_lee != NULL; idx++) {
2955 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
2960 linkea_next_entry(ldata);
2970 * Get parent FID and name of an identified link. Operation is performed for
2971 * a given link number, letting the caller iterate over linkno to list one or
2972 * all links of an entry.
2974 * \param[in] file - File descriptor against which to perform the operation
2975 * \param[in,out] arg - User-filled structure containing the linkno to operate
2976 * on and the available size. It is eventually filled with
2977 * the requested information or left untouched on error
2979 * \retval - 0 on success
2980 * \retval - Appropriate negative error code on failure
2982 int ll_getparent(struct file *file, struct getparent __user *arg)
2984 struct inode *inode = file_inode(file);
2985 struct linkea_data *ldata;
2986 struct lu_buf buf = LU_BUF_NULL;
2988 struct lu_fid parent_fid;
2995 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
2996 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
2999 if (get_user(name_size, &arg->gp_name_size))
3002 if (get_user(linkno, &arg->gp_linkno))
3005 if (name_size > PATH_MAX)
3008 OBD_ALLOC(ldata, sizeof(*ldata));
3012 rc = linkea_data_new(ldata, &buf);
3014 GOTO(ldata_free, rc);
3016 #ifdef HAVE_XATTR_HANDLER_FLAGS
3017 rc = ll_xattr_list(inode, XATTR_NAME_LINK, XATTR_TRUSTED_T, buf.lb_buf,
3018 buf.lb_len, OBD_MD_FLXATTR);
3020 rc = ll_getxattr(file_dentry(file), XATTR_NAME_LINK, buf.lb_buf,
3022 #endif /* HAVE_XATTR_HANDLER_FLAGS */
3026 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
3030 if (ln.ln_namelen >= name_size)
3031 GOTO(lb_free, rc = -EOVERFLOW);
3033 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
3034 GOTO(lb_free, rc = -EFAULT);
3036 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
3037 GOTO(lb_free, rc = -EFAULT);
3039 if (put_user('\0', arg->gp_name + ln.ln_namelen))
3040 GOTO(lb_free, rc = -EFAULT);
3045 OBD_FREE(ldata, sizeof(*ldata));