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 #include <linux/delay.h>
49 #include <linux/uidgid.h>
50 #include <linux/security.h>
52 #include <uapi/linux/lustre/lustre_ioctl.h>
53 #ifdef HAVE_UAPI_LINUX_MOUNT_H
54 #include <uapi/linux/mount.h>
57 #include <lustre_ha.h>
58 #include <lustre_dlm.h>
59 #include <lprocfs_status.h>
60 #include <lustre_disk.h>
61 #include <uapi/linux/lustre/lustre_param.h>
62 #include <lustre_log.h>
63 #include <cl_object.h>
64 #include <obd_cksum.h>
65 #include "llite_internal.h"
67 struct kmem_cache *ll_file_data_slab;
70 #define log2(n) ffz(~(n))
73 static struct ll_sb_info *ll_init_sbi(void)
75 struct ll_sb_info *sbi = NULL;
77 unsigned long lru_page_max;
86 RETURN(ERR_PTR(-ENOMEM));
88 rc = pcc_super_init(&sbi->ll_pcc_super);
92 spin_lock_init(&sbi->ll_lock);
93 mutex_init(&sbi->ll_lco.lco_lock);
94 spin_lock_init(&sbi->ll_pp_extent_lock);
95 spin_lock_init(&sbi->ll_process_lock);
96 sbi->ll_rw_stats_on = 0;
97 sbi->ll_statfs_max_age = OBD_STATFS_CACHE_SECONDS;
100 pages = si.totalram - si.totalhigh;
101 lru_page_max = pages / 2;
103 sbi->ll_ra_info.ra_async_max_active = 0;
104 sbi->ll_ra_info.ll_readahead_wq =
105 alloc_workqueue("ll-readahead-wq", WQ_UNBOUND,
106 sbi->ll_ra_info.ra_async_max_active);
107 if (!sbi->ll_ra_info.ll_readahead_wq)
108 GOTO(out_pcc, rc = -ENOMEM);
110 /* initialize ll_cache data */
111 sbi->ll_cache = cl_cache_init(lru_page_max);
112 if (sbi->ll_cache == NULL)
113 GOTO(out_destroy_ra, rc = -ENOMEM);
115 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
116 SBI_DEFAULT_READAHEAD_MAX);
117 sbi->ll_ra_info.ra_async_pages_per_file_threshold =
118 sbi->ll_ra_info.ra_max_pages_per_file;
119 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
120 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = -1;
122 sbi->ll_flags |= LL_SBI_VERBOSE;
123 #ifdef ENABLE_CHECKSUM
124 sbi->ll_flags |= LL_SBI_CHECKSUM;
127 sbi->ll_flags |= LL_SBI_FLOCK;
130 #ifdef HAVE_LRU_RESIZE_SUPPORT
131 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
133 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
135 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
136 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
138 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
142 /* metadata statahead is enabled by default */
143 sbi->ll_sa_running_max = LL_SA_RUNNING_DEF;
144 sbi->ll_sa_max = LL_SA_RPC_DEF;
145 atomic_set(&sbi->ll_sa_total, 0);
146 atomic_set(&sbi->ll_sa_wrong, 0);
147 atomic_set(&sbi->ll_sa_running, 0);
148 atomic_set(&sbi->ll_agl_total, 0);
149 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
150 sbi->ll_flags |= LL_SBI_FAST_READ;
151 sbi->ll_flags |= LL_SBI_TINY_WRITE;
154 sbi->ll_squash.rsi_uid = 0;
155 sbi->ll_squash.rsi_gid = 0;
156 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
157 spin_lock_init(&sbi->ll_squash.rsi_lock);
159 /* Per-filesystem file heat */
160 sbi->ll_heat_decay_weight = SBI_DEFAULT_HEAT_DECAY_WEIGHT;
161 sbi->ll_heat_period_second = SBI_DEFAULT_HEAT_PERIOD_SECOND;
164 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
166 pcc_super_fini(&sbi->ll_pcc_super);
172 static void ll_free_sbi(struct super_block *sb)
174 struct ll_sb_info *sbi = ll_s2sbi(sb);
178 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
179 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
180 if (sbi->ll_ra_info.ll_readahead_wq)
181 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
182 if (sbi->ll_cache != NULL) {
183 cl_cache_decref(sbi->ll_cache);
184 sbi->ll_cache = NULL;
186 pcc_super_fini(&sbi->ll_pcc_super);
187 OBD_FREE(sbi, sizeof(*sbi));
192 static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
194 struct inode *root = NULL;
195 struct ll_sb_info *sbi = ll_s2sbi(sb);
196 struct obd_statfs *osfs = NULL;
197 struct ptlrpc_request *request = NULL;
198 struct obd_connect_data *data = NULL;
199 struct obd_uuid *uuid;
200 struct md_op_data *op_data;
201 struct lustre_md lmd;
203 int size, err, checksum;
206 sbi->ll_md_obd = class_name2obd(md);
207 if (!sbi->ll_md_obd) {
208 CERROR("MD %s: not setup or attached\n", md);
222 /* pass client page size via ocd_grant_blkbits, the server should report
223 * back its backend blocksize for grant calculation purpose */
224 data->ocd_grant_blkbits = PAGE_SHIFT;
226 /* indicate MDT features supported by this client */
227 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
228 OBD_CONNECT_ATTRFID | OBD_CONNECT_GRANT |
229 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
230 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
231 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
232 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
233 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
234 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
235 OBD_CONNECT_64BITHASH |
236 OBD_CONNECT_EINPROGRESS |
237 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
238 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
239 OBD_CONNECT_MAX_EASIZE |
240 OBD_CONNECT_FLOCK_DEAD |
241 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
242 OBD_CONNECT_OPEN_BY_FID |
243 OBD_CONNECT_DIR_STRIPE |
244 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_CKSUM |
245 OBD_CONNECT_SUBTREE |
246 OBD_CONNECT_MULTIMODRPCS |
247 OBD_CONNECT_GRANT_PARAM |
248 OBD_CONNECT_SHORTIO | OBD_CONNECT_FLAGS2;
250 data->ocd_connect_flags2 = OBD_CONNECT2_DIR_MIGRATE |
251 OBD_CONNECT2_SUM_STATFS |
252 OBD_CONNECT2_OVERSTRIPING |
254 OBD_CONNECT2_LOCK_CONVERT |
255 OBD_CONNECT2_ARCHIVE_ID_ARRAY |
256 OBD_CONNECT2_INC_XID |
258 OBD_CONNECT2_ASYNC_DISCARD |
261 #ifdef HAVE_LRU_RESIZE_SUPPORT
262 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
263 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
265 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
266 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK |
267 OBD_CONNECT_LARGE_ACL;
270 data->ocd_cksum_types = obd_cksum_types_supported_client();
272 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
273 /* flag mdc connection as lightweight, only used for test
274 * purpose, use with care */
275 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
277 data->ocd_ibits_known = MDS_INODELOCK_FULL;
278 data->ocd_version = LUSTRE_VERSION_CODE;
280 if (sb->s_flags & SB_RDONLY)
281 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
282 if (sbi->ll_flags & LL_SBI_USER_XATTR)
283 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
286 /* Setting this indicates we correctly support S_NOSEC (See kernel
287 * commit 9e1f1de02c2275d7172e18dc4e7c2065777611bf)
289 sb->s_flags |= SB_NOSEC;
292 if (sbi->ll_flags & LL_SBI_FLOCK)
293 sbi->ll_fop = &ll_file_operations_flock;
294 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
295 sbi->ll_fop = &ll_file_operations;
297 sbi->ll_fop = &ll_file_operations_noflock;
299 /* always ping even if server suppress_pings */
300 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
301 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
303 obd_connect_set_secctx(data);
305 #if defined(CONFIG_SECURITY)
306 data->ocd_connect_flags2 |= OBD_CONNECT2_SELINUX_POLICY;
309 data->ocd_brw_size = MD_MAX_BRW_SIZE;
311 err = obd_connect(NULL, &sbi->ll_md_exp, sbi->ll_md_obd,
312 &sbi->ll_sb_uuid, data, sbi->ll_cache);
314 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
315 "recovery, of which this client is not a "
316 "part. Please wait for recovery to complete,"
317 " abort, or time out.\n", md);
320 CERROR("cannot connect to %s: rc = %d\n", md, err);
324 sbi->ll_md_exp->exp_connect_data = *data;
326 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
327 LUSTRE_SEQ_METADATA);
329 CERROR("%s: Can't init metadata layer FID infrastructure, "
330 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
334 /* For mount, we only need fs info from MDT0, and also in DNE, it
335 * can make sure the client can be mounted as long as MDT0 is
337 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
338 ktime_get_seconds() - sbi->ll_statfs_max_age,
339 OBD_STATFS_FOR_MDT0);
341 GOTO(out_md_fid, err);
343 /* This needs to be after statfs to ensure connect has finished.
344 * Note that "data" does NOT contain the valid connect reply.
345 * If connecting to a 1.8 server there will be no LMV device, so
346 * we can access the MDC export directly and exp_connect_flags will
347 * be non-zero, but if accessing an upgraded 2.1 server it will
348 * have the correct flags filled in.
349 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
350 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
351 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
352 valid != CLIENT_CONNECT_MDT_REQD) {
355 OBD_ALLOC_WAIT(buf, PAGE_SIZE);
356 obd_connect_flags2str(buf, PAGE_SIZE,
357 valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
358 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
359 "feature(s) needed for correct operation "
360 "of this client (%s). Please upgrade "
361 "server or downgrade client.\n",
362 sbi->ll_md_exp->exp_obd->obd_name, buf);
363 OBD_FREE(buf, PAGE_SIZE);
364 GOTO(out_md_fid, err = -EPROTO);
367 size = sizeof(*data);
368 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
369 KEY_CONN_DATA, &size, data);
371 CERROR("%s: Get connect data failed: rc = %d\n",
372 sbi->ll_md_exp->exp_obd->obd_name, err);
373 GOTO(out_md_fid, err);
376 LASSERT(osfs->os_bsize);
377 sb->s_blocksize = osfs->os_bsize;
378 sb->s_blocksize_bits = log2(osfs->os_bsize);
379 sb->s_magic = LL_SUPER_MAGIC;
380 sb->s_maxbytes = MAX_LFS_FILESIZE;
381 sbi->ll_namelen = osfs->os_namelen;
382 sbi->ll_mnt.mnt = current->fs->root.mnt;
384 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
385 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
386 LCONSOLE_INFO("Disabling user_xattr feature because "
387 "it is not supported on the server\n");
388 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
391 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
393 sb->s_flags |= SB_POSIXACL;
395 sbi->ll_flags |= LL_SBI_ACL;
397 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
399 sb->s_flags &= ~SB_POSIXACL;
401 sbi->ll_flags &= ~LL_SBI_ACL;
404 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
405 sbi->ll_flags |= LL_SBI_64BIT_HASH;
407 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
408 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
410 if (obd_connect_has_secctx(data))
411 sbi->ll_flags |= LL_SBI_FILE_SECCTX;
413 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
414 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
415 LCONSOLE_INFO("%s: disabling xattr cache due to "
416 "unknown maximum xattr size.\n", dt);
417 } else if (!sbi->ll_xattr_cache_set) {
418 /* If xattr_cache is already set (no matter 0 or 1)
419 * during processing llog, it won't be enabled here. */
420 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
421 sbi->ll_xattr_cache_enabled = 1;
425 sbi->ll_dt_obd = class_name2obd(dt);
426 if (!sbi->ll_dt_obd) {
427 CERROR("DT %s: not setup or attached\n", dt);
428 GOTO(out_md_fid, err = -ENODEV);
431 /* pass client page size via ocd_grant_blkbits, the server should report
432 * back its backend blocksize for grant calculation purpose */
433 data->ocd_grant_blkbits = PAGE_SHIFT;
435 /* indicate OST features supported by this client */
436 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
437 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
438 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
439 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
440 OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
441 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
442 OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
443 OBD_CONNECT_EINPROGRESS |
444 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
445 OBD_CONNECT_LAYOUTLOCK |
446 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
447 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_SHORTIO |
448 OBD_CONNECT_FLAGS2 | OBD_CONNECT_GRANT_SHRINK;
450 /* The client currently advertises support for OBD_CONNECT_LOCKAHEAD_OLD so it
451 * can interoperate with an older version of lockahead which was released prior
452 * to landing in master. This support will be dropped when 2.13 development
453 * starts. At the point, we should not just drop the connect flag (below), we
454 * should also remove the support in the code.
456 * Removing it means a few things:
457 * 1. Remove this section here
458 * 2. Remove CEF_NONBLOCK in ll_file_lockahead()
459 * 3. Remove function exp_connect_lockahead_old
460 * 4. Remove LDLM_FL_LOCKAHEAD_OLD_RESERVED in lustre_dlm_flags.h
462 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 12, 50, 0)
463 data->ocd_connect_flags |= OBD_CONNECT_LOCKAHEAD_OLD;
466 data->ocd_connect_flags2 = OBD_CONNECT2_LOCKAHEAD |
467 OBD_CONNECT2_INC_XID;
469 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
470 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
472 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
473 * disabled by default, because it can still be enabled on the
474 * fly via /sys. As a consequence, we still need to come to an
475 * agreement on the supported algorithms at connect time
477 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
479 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
480 data->ocd_cksum_types = OBD_CKSUM_ADLER;
482 data->ocd_cksum_types = obd_cksum_types_supported_client();
484 #ifdef HAVE_LRU_RESIZE_SUPPORT
485 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
487 /* always ping even if server suppress_pings */
488 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
489 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
491 CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d "
492 "ocd_grant: %d\n", data->ocd_connect_flags,
493 data->ocd_version, data->ocd_grant);
495 sbi->ll_dt_obd->obd_upcall.onu_owner = &sbi->ll_lco;
496 sbi->ll_dt_obd->obd_upcall.onu_upcall = cl_ocd_update;
498 data->ocd_brw_size = DT_MAX_BRW_SIZE;
500 err = obd_connect(NULL, &sbi->ll_dt_exp, sbi->ll_dt_obd,
501 &sbi->ll_sb_uuid, data, sbi->ll_cache);
503 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
504 "recovery, of which this client is not a "
505 "part. Please wait for recovery to "
506 "complete, abort, or time out.\n", dt);
509 CERROR("%s: Cannot connect to %s: rc = %d\n",
510 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
514 sbi->ll_dt_exp->exp_connect_data = *data;
516 /* Don't change value if it was specified in the config log */
517 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages == -1) {
518 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
519 max_t(unsigned long, SBI_DEFAULT_READAHEAD_WHOLE_MAX,
520 (data->ocd_brw_size >> PAGE_SHIFT));
521 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages >
522 sbi->ll_ra_info.ra_max_pages_per_file)
523 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
524 sbi->ll_ra_info.ra_max_pages_per_file;
527 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
528 LUSTRE_SEQ_METADATA);
530 CERROR("%s: Can't init data layer FID infrastructure, "
531 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
535 mutex_lock(&sbi->ll_lco.lco_lock);
536 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
537 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
538 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
539 mutex_unlock(&sbi->ll_lco.lco_lock);
541 fid_zero(&sbi->ll_root_fid);
542 err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
545 CERROR("cannot mds_connect: rc = %d\n", err);
546 GOTO(out_lock_cn_cb, err);
548 if (!fid_is_sane(&sbi->ll_root_fid)) {
549 CERROR("%s: Invalid root fid "DFID" during mount\n",
550 sbi->ll_md_exp->exp_obd->obd_name,
551 PFID(&sbi->ll_root_fid));
552 GOTO(out_lock_cn_cb, err = -EINVAL);
554 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
556 sb->s_op = &lustre_super_operations;
557 sb->s_xattr = ll_xattr_handlers;
558 #if THREAD_SIZE >= 8192 /*b=17630*/
559 sb->s_export_op = &lustre_export_operations;
563 * XXX: move this to after cbd setup? */
564 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
565 if (sbi->ll_flags & LL_SBI_ACL)
566 valid |= OBD_MD_FLACL;
568 OBD_ALLOC_PTR(op_data);
570 GOTO(out_lock_cn_cb, err = -ENOMEM);
572 op_data->op_fid1 = sbi->ll_root_fid;
573 op_data->op_mode = 0;
574 op_data->op_valid = valid;
576 err = md_getattr(sbi->ll_md_exp, op_data, &request);
578 OBD_FREE_PTR(op_data);
580 CERROR("%s: md_getattr failed for root: rc = %d\n",
581 sbi->ll_md_exp->exp_obd->obd_name, err);
582 GOTO(out_lock_cn_cb, err);
585 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
586 sbi->ll_md_exp, &lmd);
588 CERROR("failed to understand root inode md: rc = %d\n", err);
589 ptlrpc_req_finished(request);
590 GOTO(out_lock_cn_cb, err);
593 LASSERT(fid_is_sane(&sbi->ll_root_fid));
594 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
595 sbi->ll_flags & LL_SBI_32BIT_API),
597 md_free_lustre_md(sbi->ll_md_exp, &lmd);
598 ptlrpc_req_finished(request);
601 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
603 posix_acl_release(lmd.posix_acl);
604 lmd.posix_acl = NULL;
607 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
609 CERROR("%s: bad ll_iget() for root: rc = %d\n",
610 sbi->ll_fsname, err);
614 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
615 if (sbi->ll_checksum_set) {
616 err = obd_set_info_async(NULL, sbi->ll_dt_exp,
617 sizeof(KEY_CHECKSUM), KEY_CHECKSUM,
618 sizeof(checksum), &checksum, NULL);
620 CERROR("%s: Set checksum failed: rc = %d\n",
621 sbi->ll_dt_exp->exp_obd->obd_name, err);
627 sb->s_root = d_make_root(root);
628 if (sb->s_root == NULL) {
630 CERROR("%s: can't make root dentry: rc = %d\n",
631 sbi->ll_fsname, err);
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 & SB_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;
809 /* wait running statahead threads to quit */
810 while (atomic_read(&sbi->ll_sa_running) > 0)
811 schedule_timeout_uninterruptible(
812 cfs_time_seconds(1) >> 3);
818 static inline int ll_set_opt(const char *opt, char *data, int fl)
820 if (strncmp(opt, data, strlen(opt)) != 0)
826 /* non-client-specific mount options are parsed in lmd_parse */
827 static int ll_options(char *options, struct ll_sb_info *sbi)
830 char *s1 = options, *s2;
831 int *flags = &sbi->ll_flags;
837 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
840 CDEBUG(D_SUPER, "next opt=%s\n", s1);
841 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
846 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
848 *flags = (*flags & ~LL_SBI_LOCALFLOCK) | tmp;
851 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
853 *flags = (*flags & ~LL_SBI_FLOCK) | tmp;
856 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
861 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
866 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
871 tmp = ll_set_opt("context", s1, 1);
874 tmp = ll_set_opt("fscontext", s1, 1);
877 tmp = ll_set_opt("defcontext", s1, 1);
880 tmp = ll_set_opt("rootcontext", s1, 1);
883 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
888 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
894 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
897 sbi->ll_checksum_set = 1;
900 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
903 sbi->ll_checksum_set = 1;
906 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
911 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
916 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
921 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
926 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
931 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
936 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
941 tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
946 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
952 s2 = strchr(s1, ',');
960 void ll_lli_init(struct ll_inode_info *lli)
962 lli->lli_inode_magic = LLI_INODE_MAGIC;
964 spin_lock_init(&lli->lli_lock);
965 lli->lli_posix_acl = NULL;
966 /* Do not set lli_fid, it has been initialized already. */
967 fid_zero(&lli->lli_pfid);
968 lli->lli_mds_read_och = NULL;
969 lli->lli_mds_write_och = NULL;
970 lli->lli_mds_exec_och = NULL;
971 lli->lli_open_fd_read_count = 0;
972 lli->lli_open_fd_write_count = 0;
973 lli->lli_open_fd_exec_count = 0;
974 mutex_init(&lli->lli_och_mutex);
975 spin_lock_init(&lli->lli_agl_lock);
976 spin_lock_init(&lli->lli_layout_lock);
977 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
978 lli->lli_clob = NULL;
980 init_rwsem(&lli->lli_xattrs_list_rwsem);
981 mutex_init(&lli->lli_xattrs_enq_lock);
983 LASSERT(lli->lli_vfs_inode.i_mode != 0);
984 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
985 lli->lli_opendir_key = NULL;
987 spin_lock_init(&lli->lli_sa_lock);
988 lli->lli_opendir_pid = 0;
989 lli->lli_sa_enabled = 0;
990 init_rwsem(&lli->lli_lsm_sem);
992 mutex_init(&lli->lli_size_mutex);
993 lli->lli_symlink_name = NULL;
994 ll_trunc_sem_init(&lli->lli_trunc_sem);
995 range_lock_tree_init(&lli->lli_write_tree);
996 init_rwsem(&lli->lli_glimpse_sem);
997 lli->lli_glimpse_time = ktime_set(0, 0);
998 INIT_LIST_HEAD(&lli->lli_agl_list);
999 lli->lli_agl_index = 0;
1000 lli->lli_async_rc = 0;
1001 spin_lock_init(&lli->lli_heat_lock);
1002 obd_heat_clear(lli->lli_heat_instances, OBD_HEAT_COUNT);
1003 lli->lli_heat_flags = 0;
1004 mutex_init(&lli->lli_pcc_lock);
1005 lli->lli_pcc_state = PCC_STATE_FL_NONE;
1006 lli->lli_pcc_inode = NULL;
1007 lli->lli_pcc_dsflags = PCC_DATASET_INVALID;
1008 lli->lli_pcc_generation = 0;
1009 mutex_init(&lli->lli_group_mutex);
1010 lli->lli_group_users = 0;
1011 lli->lli_group_gid = 0;
1013 mutex_init(&lli->lli_layout_mutex);
1014 memset(lli->lli_jobid, 0, sizeof(lli->lli_jobid));
1017 #define MAX_STRING_SIZE 128
1019 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1021 #define LSI_BDI_INITIALIZED 0x00400000
1023 #ifndef HAVE_BDI_CAP_MAP_COPY
1024 # define BDI_CAP_MAP_COPY 0
1027 static int super_setup_bdi_name(struct super_block *sb, char *fmt, ...)
1029 struct lustre_sb_info *lsi = s2lsi(sb);
1030 char buf[MAX_STRING_SIZE];
1034 err = bdi_init(&lsi->lsi_bdi);
1038 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1039 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1040 lsi->lsi_bdi.name = "lustre";
1041 va_start(args, fmt);
1042 vsnprintf(buf, MAX_STRING_SIZE, fmt, args);
1044 err = bdi_register(&lsi->lsi_bdi, NULL, "%s", buf);
1047 sb->s_bdi = &lsi->lsi_bdi;
1051 #endif /* !HAVE_SUPER_SETUP_BDI_NAME */
1053 int ll_fill_super(struct super_block *sb)
1055 struct lustre_profile *lprof = NULL;
1056 struct lustre_sb_info *lsi = s2lsi(sb);
1057 struct ll_sb_info *sbi = NULL;
1058 char *dt = NULL, *md = NULL;
1059 char *profilenm = get_profile_name(sb);
1060 struct config_llog_instance *cfg;
1061 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1062 const int instlen = LUSTRE_MAXINSTANCE + 2;
1063 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1064 char name[MAX_STRING_SIZE];
1073 /* for ASLR, to map between cfg_instance and hashed ptr */
1074 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1075 profilenm, cfg_instance, sb);
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 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1091 sb->s_d_op = &ll_d_ops;
1094 generate_random_uuid(uuid.b);
1095 snprintf(sbi->ll_sb_uuid.uuid, UUID_SIZE, "%pU", uuid.b);
1097 CDEBUG(D_CONFIG, "llite sb uuid: %s\n", sbi->ll_sb_uuid.uuid);
1100 len = strlen(profilenm);
1101 ptr = strrchr(profilenm, '-');
1102 if (ptr && (strcmp(ptr, "-client") == 0))
1105 if (len > LUSTRE_MAXFSNAME) {
1106 if (unlikely(len >= MAX_STRING_SIZE))
1107 len = MAX_STRING_SIZE - 1;
1108 strncpy(name, profilenm, len);
1110 err = -ENAMETOOLONG;
1111 CERROR("%s: fsname longer than %u characters: rc = %d\n",
1112 name, LUSTRE_MAXFSNAME, err);
1113 GOTO(out_free_cfg, err);
1115 strncpy(sbi->ll_fsname, profilenm, len);
1116 sbi->ll_fsname[len] = '\0';
1119 snprintf(name, sizeof(name), "%.*s-%016lx", len,
1120 profilenm, cfg_instance);
1122 err = super_setup_bdi_name(sb, "%s", name);
1124 GOTO(out_free_cfg, err);
1126 /* Call ll_debugfs_register_super() before lustre_process_log()
1127 * so that "llite.*.*" params can be processed correctly.
1129 err = ll_debugfs_register_super(sb, name);
1131 CERROR("%s: could not register mountpoint in llite: rc = %d\n",
1132 sbi->ll_fsname, err);
1136 /* The cfg_instance is a value unique to this super, in case some
1137 * joker tries to mount the same fs at two mount points.
1139 cfg->cfg_instance = cfg_instance;
1140 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1141 cfg->cfg_callback = class_config_llog_handler;
1142 cfg->cfg_sub_clds = CONFIG_SUB_CLIENT;
1143 /* set up client obds */
1144 err = lustre_process_log(sb, profilenm, cfg);
1146 GOTO(out_debugfs, err);
1148 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1149 lprof = class_get_profile(profilenm);
1150 if (lprof == NULL) {
1151 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1152 " read from the MGS. Does that filesystem "
1153 "exist?\n", profilenm);
1154 GOTO(out_debugfs, err = -EINVAL);
1156 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1157 lprof->lp_md, lprof->lp_dt);
1159 dt_len = strlen(lprof->lp_dt) + instlen + 2;
1160 OBD_ALLOC(dt, dt_len);
1162 GOTO(out_profile, err = -ENOMEM);
1163 snprintf(dt, dt_len - 1, "%s-%016lx", lprof->lp_dt, cfg_instance);
1165 md_len = strlen(lprof->lp_md) + instlen + 2;
1166 OBD_ALLOC(md, md_len);
1168 GOTO(out_free_dt, err = -ENOMEM);
1169 snprintf(md, md_len - 1, "%s-%016lx", lprof->lp_md, cfg_instance);
1171 /* connections, registrations, sb setup */
1172 err = client_common_fill_super(sb, md, dt);
1174 GOTO(out_free_md, err);
1176 sbi->ll_client_common_fill_super_succeeded = 1;
1180 OBD_FREE(md, md_len);
1183 OBD_FREE(dt, dt_len);
1186 class_put_profile(lprof);
1189 ll_debugfs_unregister_super(sb);
1196 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1197 LCONSOLE_WARN("Mounted %s\n", profilenm);
1199 } /* ll_fill_super */
1201 void ll_put_super(struct super_block *sb)
1203 struct config_llog_instance cfg, params_cfg;
1204 struct obd_device *obd;
1205 struct lustre_sb_info *lsi = s2lsi(sb);
1206 struct ll_sb_info *sbi = ll_s2sbi(sb);
1207 char *profilenm = get_profile_name(sb);
1208 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1210 int next, force = 1, rc = 0;
1214 GOTO(out_no_sbi, 0);
1216 /* Should replace instance_id with something better for ASLR */
1217 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1218 profilenm, cfg_instance, sb);
1220 cfg.cfg_instance = cfg_instance;
1221 lustre_end_log(sb, profilenm, &cfg);
1223 params_cfg.cfg_instance = cfg_instance;
1224 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1226 if (sbi->ll_md_exp) {
1227 obd = class_exp2obd(sbi->ll_md_exp);
1229 force = obd->obd_force;
1232 /* Wait for unstable pages to be committed to stable storage */
1234 rc = l_wait_event_abortable(
1235 sbi->ll_cache->ccc_unstable_waitq,
1236 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0);
1239 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1240 if (force == 0 && rc != -ERESTARTSYS)
1241 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1243 /* We need to set force before the lov_disconnect in
1244 * lustre_common_put_super, since l_d cleans up osc's as well.
1248 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1250 obd->obd_force = force;
1254 if (sbi->ll_client_common_fill_super_succeeded) {
1255 /* Only if client_common_fill_super succeeded */
1256 client_common_put_super(sb);
1260 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)))
1261 class_manual_cleanup(obd);
1263 if (sbi->ll_flags & LL_SBI_VERBOSE)
1264 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1267 class_del_profile(profilenm);
1269 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1270 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1271 bdi_destroy(&lsi->lsi_bdi);
1272 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1277 lsi->lsi_llsbi = NULL;
1279 lustre_common_put_super(sb);
1281 cl_env_cache_purge(~0);
1283 module_put(THIS_MODULE);
1286 } /* client_put_super */
1288 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1290 struct inode *inode = NULL;
1292 /* NOTE: we depend on atomic igrab() -bzzz */
1293 lock_res_and_lock(lock);
1294 if (lock->l_resource->lr_lvb_inode) {
1295 struct ll_inode_info * lli;
1296 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1297 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1298 inode = igrab(lock->l_resource->lr_lvb_inode);
1300 inode = lock->l_resource->lr_lvb_inode;
1301 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1302 D_WARNING, lock, "lr_lvb_inode %p is "
1303 "bogus: magic %08x",
1304 lock->l_resource->lr_lvb_inode,
1305 lli->lli_inode_magic);
1309 unlock_res_and_lock(lock);
1313 void ll_dir_clear_lsm_md(struct inode *inode)
1315 struct ll_inode_info *lli = ll_i2info(inode);
1317 LASSERT(S_ISDIR(inode->i_mode));
1319 if (lli->lli_lsm_md) {
1320 lmv_free_memmd(lli->lli_lsm_md);
1321 lli->lli_lsm_md = NULL;
1324 if (lli->lli_default_lsm_md) {
1325 lmv_free_memmd(lli->lli_default_lsm_md);
1326 lli->lli_default_lsm_md = NULL;
1330 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1331 const struct lu_fid *fid,
1332 struct lustre_md *md)
1334 struct ll_sb_info *sbi = ll_s2sbi(sb);
1335 struct mdt_body *body = md->body;
1336 struct inode *inode;
1340 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1341 inode = iget_locked(sb, ino);
1342 if (inode == NULL) {
1343 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1344 sbi->ll_fsname, PFID(fid));
1345 RETURN(ERR_PTR(-ENOENT));
1348 if (inode->i_state & I_NEW) {
1349 struct ll_inode_info *lli = ll_i2info(inode);
1350 struct lmv_stripe_md *lsm = md->lmv;
1352 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1353 (body->mbo_mode & S_IFMT);
1354 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1357 inode->i_mtime.tv_sec = 0;
1358 inode->i_atime.tv_sec = 0;
1359 inode->i_ctime.tv_sec = 0;
1362 #ifdef HAVE_BACKING_DEV_INFO
1363 /* initializing backing dev info. */
1364 inode->i_mapping->backing_dev_info =
1365 &s2lsi(inode->i_sb)->lsi_bdi;
1367 inode->i_op = &ll_dir_inode_operations;
1368 inode->i_fop = &ll_dir_operations;
1369 lli->lli_fid = *fid;
1372 LASSERT(lsm != NULL);
1373 /* master object FID */
1374 lli->lli_pfid = body->mbo_fid1;
1375 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1376 lli, PFID(fid), PFID(&lli->lli_pfid));
1377 unlock_new_inode(inode);
1383 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1386 struct lmv_stripe_md *lsm = md->lmv;
1387 struct ll_inode_info *lli = ll_i2info(inode);
1390 LASSERT(lsm != NULL);
1392 CDEBUG(D_INODE, "%s: "DFID" set dir layout:\n",
1393 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1394 lsm_md_dump(D_INODE, lsm);
1396 if (!lmv_dir_striped(lsm))
1399 /* XXX sigh, this lsm_root initialization should be in
1400 * LMV layer, but it needs ll_iget right now, so we
1401 * put this here right now. */
1402 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1403 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1404 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1406 if (!fid_is_sane(fid))
1409 /* Unfortunately ll_iget will call ll_update_inode,
1410 * where the initialization of slave inode is slightly
1411 * different, so it reset lsm_md to NULL to avoid
1412 * initializing lsm for slave inode. */
1413 lsm->lsm_md_oinfo[i].lmo_root =
1414 ll_iget_anon_dir(inode->i_sb, fid, md);
1415 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1416 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1418 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1420 iput(lsm->lsm_md_oinfo[i].lmo_root);
1421 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1427 lli->lli_lsm_md = lsm;
1432 static void ll_update_default_lsm_md(struct inode *inode, struct lustre_md *md)
1434 struct ll_inode_info *lli = ll_i2info(inode);
1436 if (!md->default_lmv) {
1437 /* clear default lsm */
1438 if (lli->lli_default_lsm_md) {
1439 down_write(&lli->lli_lsm_sem);
1440 if (lli->lli_default_lsm_md) {
1441 lmv_free_memmd(lli->lli_default_lsm_md);
1442 lli->lli_default_lsm_md = NULL;
1444 up_write(&lli->lli_lsm_sem);
1446 } else if (lli->lli_default_lsm_md) {
1447 /* update default lsm if it changes */
1448 down_read(&lli->lli_lsm_sem);
1449 if (lli->lli_default_lsm_md &&
1450 !lsm_md_eq(lli->lli_default_lsm_md, md->default_lmv)) {
1451 up_read(&lli->lli_lsm_sem);
1452 down_write(&lli->lli_lsm_sem);
1453 if (lli->lli_default_lsm_md)
1454 lmv_free_memmd(lli->lli_default_lsm_md);
1455 lli->lli_default_lsm_md = md->default_lmv;
1456 lsm_md_dump(D_INODE, md->default_lmv);
1457 md->default_lmv = NULL;
1458 up_write(&lli->lli_lsm_sem);
1460 up_read(&lli->lli_lsm_sem);
1463 /* init default lsm */
1464 down_write(&lli->lli_lsm_sem);
1465 lli->lli_default_lsm_md = md->default_lmv;
1466 lsm_md_dump(D_INODE, md->default_lmv);
1467 md->default_lmv = NULL;
1468 up_write(&lli->lli_lsm_sem);
1472 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1474 struct ll_inode_info *lli = ll_i2info(inode);
1475 struct lmv_stripe_md *lsm = md->lmv;
1476 struct cl_attr *attr;
1481 LASSERT(S_ISDIR(inode->i_mode));
1482 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1483 PFID(ll_inode2fid(inode)));
1485 /* update default LMV */
1486 if (md->default_lmv)
1487 ll_update_default_lsm_md(inode, md);
1490 * no striped information from request, lustre_md from req does not
1491 * include stripeEA, see ll_md_setattr()
1497 * normally dir layout doesn't change, only take read lock to check
1498 * that to avoid blocking other MD operations.
1500 down_read(&lli->lli_lsm_sem);
1502 /* some current lookup initialized lsm, and unchanged */
1503 if (lli->lli_lsm_md && lsm_md_eq(lli->lli_lsm_md, lsm))
1504 GOTO(unlock, rc = 0);
1506 /* if dir layout doesn't match, check whether version is increased,
1507 * which means layout is changed, this happens in dir split/merge and
1510 * foreign LMV should not change.
1512 if (lli->lli_lsm_md && lmv_dir_striped(lli->lli_lsm_md) &&
1513 lsm->lsm_md_layout_version <=
1514 lli->lli_lsm_md->lsm_md_layout_version) {
1515 CERROR("%s: "DFID" dir layout mismatch:\n",
1516 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1517 lsm_md_dump(D_ERROR, lli->lli_lsm_md);
1518 lsm_md_dump(D_ERROR, lsm);
1519 GOTO(unlock, rc = -EINVAL);
1522 up_read(&lli->lli_lsm_sem);
1523 down_write(&lli->lli_lsm_sem);
1524 /* clear existing lsm */
1525 if (lli->lli_lsm_md) {
1526 lmv_free_memmd(lli->lli_lsm_md);
1527 lli->lli_lsm_md = NULL;
1530 rc = ll_init_lsm_md(inode, md);
1531 up_write(&lli->lli_lsm_sem);
1536 /* set md->lmv to NULL, so the following free lustre_md will not free
1541 /* md_merge_attr() may take long, since lsm is already set, switch to
1544 down_read(&lli->lli_lsm_sem);
1546 if (!lmv_dir_striped(lli->lli_lsm_md))
1547 GOTO(unlock, rc = 0);
1549 OBD_ALLOC_PTR(attr);
1551 GOTO(unlock, rc = -ENOMEM);
1553 /* validate the lsm */
1554 rc = md_merge_attr(ll_i2mdexp(inode), lli->lli_lsm_md, attr,
1555 ll_md_blocking_ast);
1557 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1558 md->body->mbo_nlink = attr->cat_nlink;
1559 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1560 md->body->mbo_size = attr->cat_size;
1561 if (md->body->mbo_valid & OBD_MD_FLATIME)
1562 md->body->mbo_atime = attr->cat_atime;
1563 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1564 md->body->mbo_ctime = attr->cat_ctime;
1565 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1566 md->body->mbo_mtime = attr->cat_mtime;
1572 up_read(&lli->lli_lsm_sem);
1577 void ll_clear_inode(struct inode *inode)
1579 struct ll_inode_info *lli = ll_i2info(inode);
1580 struct ll_sb_info *sbi = ll_i2sbi(inode);
1584 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1585 PFID(ll_inode2fid(inode)), inode);
1587 if (S_ISDIR(inode->i_mode)) {
1588 /* these should have been cleared in ll_file_release */
1589 LASSERT(lli->lli_opendir_key == NULL);
1590 LASSERT(lli->lli_sai == NULL);
1591 LASSERT(lli->lli_opendir_pid == 0);
1593 pcc_inode_free(inode);
1596 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1598 LASSERT(!lli->lli_open_fd_write_count);
1599 LASSERT(!lli->lli_open_fd_read_count);
1600 LASSERT(!lli->lli_open_fd_exec_count);
1602 if (lli->lli_mds_write_och)
1603 ll_md_real_close(inode, FMODE_WRITE);
1604 if (lli->lli_mds_exec_och)
1605 ll_md_real_close(inode, FMODE_EXEC);
1606 if (lli->lli_mds_read_och)
1607 ll_md_real_close(inode, FMODE_READ);
1609 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1610 OBD_FREE(lli->lli_symlink_name,
1611 strlen(lli->lli_symlink_name) + 1);
1612 lli->lli_symlink_name = NULL;
1615 ll_xattr_cache_destroy(inode);
1617 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1618 forget_all_cached_acls(inode);
1619 if (lli->lli_posix_acl) {
1620 posix_acl_release(lli->lli_posix_acl);
1621 lli->lli_posix_acl = NULL;
1624 lli->lli_inode_magic = LLI_INODE_DEAD;
1626 if (S_ISDIR(inode->i_mode))
1627 ll_dir_clear_lsm_md(inode);
1628 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1629 LASSERT(list_empty(&lli->lli_agl_list));
1632 * XXX This has to be done before lsm is freed below, because
1633 * cl_object still uses inode lsm.
1635 cl_inode_fini(inode);
1640 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1642 struct lustre_md md;
1643 struct inode *inode = dentry->d_inode;
1644 struct ll_sb_info *sbi = ll_i2sbi(inode);
1645 struct ptlrpc_request *request = NULL;
1649 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1650 LUSTRE_OPC_ANY, NULL);
1651 if (IS_ERR(op_data))
1652 RETURN(PTR_ERR(op_data));
1654 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1656 ptlrpc_req_finished(request);
1657 if (rc == -ENOENT) {
1659 /* Unlinked special device node? Or just a race?
1660 * Pretend we done everything. */
1661 if (!S_ISREG(inode->i_mode) &&
1662 !S_ISDIR(inode->i_mode)) {
1663 ia_valid = op_data->op_attr.ia_valid;
1664 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1665 rc = simple_setattr(dentry, &op_data->op_attr);
1666 op_data->op_attr.ia_valid = ia_valid;
1668 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1669 CERROR("md_setattr fails: rc = %d\n", rc);
1674 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1675 sbi->ll_md_exp, &md);
1677 ptlrpc_req_finished(request);
1681 ia_valid = op_data->op_attr.ia_valid;
1682 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1683 * cache is not cleared yet. */
1684 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1685 if (S_ISREG(inode->i_mode))
1687 rc = simple_setattr(dentry, &op_data->op_attr);
1688 if (S_ISREG(inode->i_mode))
1689 inode_unlock(inode);
1690 op_data->op_attr.ia_valid = ia_valid;
1692 rc = ll_update_inode(inode, &md);
1693 ptlrpc_req_finished(request);
1698 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1699 * object(s) determine the file size and mtime. Otherwise, the MDS will
1700 * keep these values until such a time that objects are allocated for it.
1701 * We do the MDS operations first, as it is checking permissions for us.
1702 * We don't to the MDS RPC if there is nothing that we want to store there,
1703 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1704 * going to do an RPC anyways.
1706 * If we are doing a truncate, we will send the mtime and ctime updates
1707 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1708 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1711 * In case of HSMimport, we only set attr on MDS.
1713 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr,
1714 enum op_xvalid xvalid, bool hsm_import)
1716 struct inode *inode = dentry->d_inode;
1717 struct ll_inode_info *lli = ll_i2info(inode);
1718 struct md_op_data *op_data = NULL;
1719 ktime_t kstart = ktime_get();
1724 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1725 "valid %x, hsm_import %d\n",
1726 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid),
1727 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1730 if (attr->ia_valid & ATTR_SIZE) {
1731 /* Check new size against VFS/VM file size limit and rlimit */
1732 rc = inode_newsize_ok(inode, attr->ia_size);
1736 /* The maximum Lustre file size is variable, based on the
1737 * OST maximum object size and number of stripes. This
1738 * needs another check in addition to the VFS check above. */
1739 if (attr->ia_size > ll_file_maxbytes(inode)) {
1740 CDEBUG(D_INODE,"file "DFID" too large %llu > %llu\n",
1741 PFID(&lli->lli_fid), attr->ia_size,
1742 ll_file_maxbytes(inode));
1746 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1749 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1750 if (attr->ia_valid & TIMES_SET_FLAGS) {
1751 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1752 !cfs_capable(CFS_CAP_FOWNER))
1756 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1757 if (!(xvalid & OP_XVALID_CTIME_SET) &&
1758 (attr->ia_valid & ATTR_CTIME)) {
1759 attr->ia_ctime = current_time(inode);
1760 xvalid |= OP_XVALID_CTIME_SET;
1762 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1763 (attr->ia_valid & ATTR_ATIME)) {
1764 attr->ia_atime = current_time(inode);
1765 attr->ia_valid |= ATTR_ATIME_SET;
1767 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1768 (attr->ia_valid & ATTR_MTIME)) {
1769 attr->ia_mtime = current_time(inode);
1770 attr->ia_valid |= ATTR_MTIME_SET;
1773 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1774 CDEBUG(D_INODE, "setting mtime %lld, ctime %lld, now = %lld\n",
1775 (s64)attr->ia_mtime.tv_sec, (s64)attr->ia_ctime.tv_sec,
1776 ktime_get_real_seconds());
1778 if (S_ISREG(inode->i_mode))
1779 inode_unlock(inode);
1781 /* We always do an MDS RPC, even if we're only changing the size;
1782 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1784 OBD_ALLOC_PTR(op_data);
1785 if (op_data == NULL)
1786 GOTO(out, rc = -ENOMEM);
1788 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1789 /* If we are changing file size, file content is
1790 * modified, flag it.
1792 xvalid |= OP_XVALID_OWNEROVERRIDE;
1793 op_data->op_bias |= MDS_DATA_MODIFIED;
1794 ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
1797 if (attr->ia_valid & ATTR_FILE) {
1798 struct ll_file_data *fd = attr->ia_file->private_data;
1800 if (fd->fd_lease_och)
1801 op_data->op_bias |= MDS_TRUNC_KEEP_LEASE;
1804 op_data->op_attr = *attr;
1805 op_data->op_xvalid = xvalid;
1807 rc = ll_md_setattr(dentry, op_data);
1811 if (!S_ISREG(inode->i_mode) || hsm_import)
1814 if (attr->ia_valid & (ATTR_SIZE | ATTR_ATIME | ATTR_ATIME_SET |
1815 ATTR_MTIME | ATTR_MTIME_SET | ATTR_CTIME) ||
1816 xvalid & OP_XVALID_CTIME_SET) {
1817 bool cached = false;
1819 rc = pcc_inode_setattr(inode, attr, &cached);
1822 CERROR("%s: PCC inode "DFID" setattr failed: "
1824 ll_i2sbi(inode)->ll_fsname,
1825 PFID(&lli->lli_fid), rc);
1829 /* For truncate and utimes sending attributes to OSTs,
1830 * setting mtime/atime to the past will be performed
1831 * under PW [0:EOF] extent lock (new_size:EOF for
1832 * truncate). It may seem excessive to send mtime/atime
1833 * updates to OSTs when not setting times to past, but
1834 * it is necessary due to possible time
1835 * de-synchronization between MDT inode and OST objects
1837 rc = cl_setattr_ost(lli->lli_clob, attr, xvalid, 0);
1841 /* If the file was restored, it needs to set dirty flag.
1843 * We've already sent MDS_DATA_MODIFIED flag in
1844 * ll_md_setattr() for truncate. However, the MDT refuses to
1845 * set the HS_DIRTY flag on released files, so we have to set
1846 * it again if the file has been restored. Please check how
1847 * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
1849 * Please notice that if the file is not released, the previous
1850 * MDS_DATA_MODIFIED has taken effect and usually
1851 * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
1852 * This way we can save an RPC for common open + trunc
1854 if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
1855 struct hsm_state_set hss = {
1856 .hss_valid = HSS_SETMASK,
1857 .hss_setmask = HS_DIRTY,
1861 rc2 = ll_hsm_state_set(inode, &hss);
1862 /* truncate and write can happen at the same time, so that
1863 * the file can be set modified even though the file is not
1864 * restored from released state, and ll_hsm_state_set() is
1865 * not applicable for the file, and rc2 < 0 is normal in this
1868 CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
1869 PFID(ll_inode2fid(inode)), rc2);
1874 if (op_data != NULL)
1875 ll_finish_md_op_data(op_data);
1877 if (S_ISREG(inode->i_mode)) {
1879 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1880 inode_dio_wait(inode);
1881 /* Once we've got the i_mutex, it's safe to set the S_NOSEC
1882 * flag. ll_update_inode (called from ll_md_setattr), clears
1883 * inode flags, so there is a gap where S_NOSEC is not set.
1884 * This can cause a writer to take the i_mutex unnecessarily,
1885 * but this is safe to do and should be rare. */
1886 inode_has_no_xattr(inode);
1890 ll_stats_ops_tally(ll_i2sbi(inode), attr->ia_valid & ATTR_SIZE ?
1891 LPROC_LL_TRUNC : LPROC_LL_SETATTR,
1892 ktime_us_delta(ktime_get(), kstart));
1897 int ll_setattr(struct dentry *de, struct iattr *attr)
1899 int mode = de->d_inode->i_mode;
1900 enum op_xvalid xvalid = 0;
1902 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1903 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1904 xvalid |= OP_XVALID_OWNEROVERRIDE;
1906 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1907 (ATTR_SIZE|ATTR_MODE)) &&
1908 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1909 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1910 !(attr->ia_mode & S_ISGID))))
1911 attr->ia_valid |= ATTR_FORCE;
1913 if ((attr->ia_valid & ATTR_MODE) &&
1915 !(attr->ia_mode & S_ISUID) &&
1916 !(attr->ia_valid & ATTR_KILL_SUID))
1917 attr->ia_valid |= ATTR_KILL_SUID;
1919 if ((attr->ia_valid & ATTR_MODE) &&
1920 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1921 !(attr->ia_mode & S_ISGID) &&
1922 !(attr->ia_valid & ATTR_KILL_SGID))
1923 attr->ia_valid |= ATTR_KILL_SGID;
1925 return ll_setattr_raw(de, attr, xvalid, false);
1928 int ll_statfs_internal(struct ll_sb_info *sbi, struct obd_statfs *osfs,
1931 struct obd_statfs obd_osfs = { 0 };
1936 max_age = ktime_get_seconds() - sbi->ll_statfs_max_age;
1938 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1939 flags |= OBD_STATFS_NODELAY;
1941 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1945 osfs->os_type = LL_SUPER_MAGIC;
1947 CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
1948 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree, osfs->os_files);
1950 if (osfs->os_state & OS_STATE_SUM)
1953 rc = obd_statfs(NULL, sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1954 if (rc) /* Possibly a filesystem with no OSTs. Report MDT totals. */
1957 CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
1958 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1961 osfs->os_bsize = obd_osfs.os_bsize;
1962 osfs->os_blocks = obd_osfs.os_blocks;
1963 osfs->os_bfree = obd_osfs.os_bfree;
1964 osfs->os_bavail = obd_osfs.os_bavail;
1966 /* If we have _some_ OSTs, but don't have as many free objects on the
1967 * OSTs as inodes on the MDTs, reduce the reported number of inodes
1968 * to compensate, so that the "inodes in use" number is correct.
1969 * This should be kept in sync with lod_statfs() behaviour.
1971 if (obd_osfs.os_files && obd_osfs.os_ffree < osfs->os_ffree) {
1972 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1974 osfs->os_ffree = obd_osfs.os_ffree;
1981 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1983 struct super_block *sb = de->d_sb;
1984 struct obd_statfs osfs;
1985 __u64 fsid = huge_encode_dev(sb->s_dev);
1986 ktime_t kstart = ktime_get();
1989 CDEBUG(D_VFSTRACE, "VFS Op:sb=%s (%p)\n", sb->s_id, sb);
1991 /* Some amount of caching on the client is allowed */
1992 rc = ll_statfs_internal(ll_s2sbi(sb), &osfs, OBD_STATFS_SUM);
1996 statfs_unpack(sfs, &osfs);
1998 /* We need to downshift for all 32-bit kernels, because we can't
1999 * tell if the kernel is being called via sys_statfs64() or not.
2000 * Stop before overflowing f_bsize - in which case it is better
2001 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
2002 if (sizeof(long) < 8) {
2003 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
2006 osfs.os_blocks >>= 1;
2007 osfs.os_bfree >>= 1;
2008 osfs.os_bavail >>= 1;
2012 sfs->f_blocks = osfs.os_blocks;
2013 sfs->f_bfree = osfs.os_bfree;
2014 sfs->f_bavail = osfs.os_bavail;
2015 sfs->f_fsid.val[0] = (__u32)fsid;
2016 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
2018 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STATFS,
2019 ktime_us_delta(ktime_get(), kstart));
2024 void ll_inode_size_lock(struct inode *inode)
2026 struct ll_inode_info *lli;
2028 LASSERT(!S_ISDIR(inode->i_mode));
2030 lli = ll_i2info(inode);
2031 mutex_lock(&lli->lli_size_mutex);
2034 void ll_inode_size_unlock(struct inode *inode)
2036 struct ll_inode_info *lli;
2038 lli = ll_i2info(inode);
2039 mutex_unlock(&lli->lli_size_mutex);
2042 void ll_update_inode_flags(struct inode *inode, int ext_flags)
2044 inode->i_flags = ll_ext_to_inode_flags(ext_flags);
2045 if (ext_flags & LUSTRE_PROJINHERIT_FL)
2046 ll_file_set_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT);
2048 ll_file_clear_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT);
2051 int ll_update_inode(struct inode *inode, struct lustre_md *md)
2053 struct ll_inode_info *lli = ll_i2info(inode);
2054 struct mdt_body *body = md->body;
2055 struct ll_sb_info *sbi = ll_i2sbi(inode);
2058 if (body->mbo_valid & OBD_MD_FLEASIZE) {
2059 rc = cl_file_inode_init(inode, md);
2064 if (S_ISDIR(inode->i_mode)) {
2065 rc = ll_update_lsm_md(inode, md);
2070 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
2071 if (body->mbo_valid & OBD_MD_FLACL) {
2072 spin_lock(&lli->lli_lock);
2073 if (lli->lli_posix_acl)
2074 posix_acl_release(lli->lli_posix_acl);
2075 lli->lli_posix_acl = md->posix_acl;
2076 spin_unlock(&lli->lli_lock);
2079 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
2080 sbi->ll_flags & LL_SBI_32BIT_API);
2081 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
2083 if (body->mbo_valid & OBD_MD_FLATIME) {
2084 if (body->mbo_atime > inode->i_atime.tv_sec)
2085 inode->i_atime.tv_sec = body->mbo_atime;
2086 lli->lli_atime = body->mbo_atime;
2089 if (body->mbo_valid & OBD_MD_FLMTIME) {
2090 if (body->mbo_mtime > inode->i_mtime.tv_sec) {
2092 "setting ino %lu mtime from %lld to %llu\n",
2093 inode->i_ino, (s64)inode->i_mtime.tv_sec,
2095 inode->i_mtime.tv_sec = body->mbo_mtime;
2097 lli->lli_mtime = body->mbo_mtime;
2100 if (body->mbo_valid & OBD_MD_FLCTIME) {
2101 if (body->mbo_ctime > inode->i_ctime.tv_sec)
2102 inode->i_ctime.tv_sec = body->mbo_ctime;
2103 lli->lli_ctime = body->mbo_ctime;
2106 /* Clear i_flags to remove S_NOSEC before permissions are updated */
2107 if (body->mbo_valid & OBD_MD_FLFLAGS)
2108 ll_update_inode_flags(inode, body->mbo_flags);
2109 if (body->mbo_valid & OBD_MD_FLMODE)
2110 inode->i_mode = (inode->i_mode & S_IFMT) |
2111 (body->mbo_mode & ~S_IFMT);
2113 if (body->mbo_valid & OBD_MD_FLTYPE)
2114 inode->i_mode = (inode->i_mode & ~S_IFMT) |
2115 (body->mbo_mode & S_IFMT);
2117 LASSERT(inode->i_mode != 0);
2118 if (S_ISREG(inode->i_mode))
2119 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
2120 LL_MAX_BLKSIZE_BITS);
2122 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
2124 if (body->mbo_valid & OBD_MD_FLUID)
2125 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
2126 if (body->mbo_valid & OBD_MD_FLGID)
2127 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
2128 if (body->mbo_valid & OBD_MD_FLPROJID)
2129 lli->lli_projid = body->mbo_projid;
2130 if (body->mbo_valid & OBD_MD_FLNLINK)
2131 set_nlink(inode, body->mbo_nlink);
2132 if (body->mbo_valid & OBD_MD_FLRDEV)
2133 inode->i_rdev = old_decode_dev(body->mbo_rdev);
2135 if (body->mbo_valid & OBD_MD_FLID) {
2136 /* FID shouldn't be changed! */
2137 if (fid_is_sane(&lli->lli_fid)) {
2138 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
2139 "Trying to change FID "DFID
2140 " to the "DFID", inode "DFID"(%p)\n",
2141 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
2142 PFID(ll_inode2fid(inode)), inode);
2144 lli->lli_fid = body->mbo_fid1;
2148 LASSERT(fid_seq(&lli->lli_fid) != 0);
2150 if (body->mbo_valid & OBD_MD_FLSIZE) {
2151 i_size_write(inode, body->mbo_size);
2153 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
2154 PFID(ll_inode2fid(inode)),
2155 (unsigned long long)body->mbo_size);
2157 if (body->mbo_valid & OBD_MD_FLBLOCKS)
2158 inode->i_blocks = body->mbo_blocks;
2161 if (body->mbo_valid & OBD_MD_TSTATE) {
2162 /* Set LLIF_FILE_RESTORING if restore ongoing and
2163 * clear it when done to ensure to start again
2164 * glimpsing updated attrs
2166 if (body->mbo_t_state & MS_RESTORE)
2167 ll_file_set_flag(lli, LLIF_FILE_RESTORING);
2169 ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
2175 int ll_read_inode2(struct inode *inode, void *opaque)
2177 struct lustre_md *md = opaque;
2178 struct ll_inode_info *lli = ll_i2info(inode);
2182 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2183 PFID(&lli->lli_fid), inode);
2185 /* Core attributes from the MDS first. This is a new inode, and
2186 * the VFS doesn't zero times in the core inode so we have to do
2187 * it ourselves. They will be overwritten by either MDS or OST
2188 * attributes - we just need to make sure they aren't newer.
2190 inode->i_mtime.tv_sec = 0;
2191 inode->i_atime.tv_sec = 0;
2192 inode->i_ctime.tv_sec = 0;
2194 rc = ll_update_inode(inode, md);
2198 /* OIDEBUG(inode); */
2200 #ifdef HAVE_BACKING_DEV_INFO
2201 /* initializing backing dev info. */
2202 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2204 if (S_ISREG(inode->i_mode)) {
2205 struct ll_sb_info *sbi = ll_i2sbi(inode);
2206 inode->i_op = &ll_file_inode_operations;
2207 inode->i_fop = sbi->ll_fop;
2208 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2210 } else if (S_ISDIR(inode->i_mode)) {
2211 inode->i_op = &ll_dir_inode_operations;
2212 inode->i_fop = &ll_dir_operations;
2214 } else if (S_ISLNK(inode->i_mode)) {
2215 inode->i_op = &ll_fast_symlink_inode_operations;
2218 inode->i_op = &ll_special_inode_operations;
2220 init_special_inode(inode, inode->i_mode,
2229 void ll_delete_inode(struct inode *inode)
2231 struct ll_inode_info *lli = ll_i2info(inode);
2232 struct address_space *mapping = &inode->i_data;
2233 unsigned long nrpages;
2234 unsigned long flags;
2238 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL) {
2239 /* It is last chance to write out dirty pages,
2240 * otherwise we may lose data while umount.
2242 * If i_nlink is 0 then just discard data. This is safe because
2243 * local inode gets i_nlink 0 from server only for the last
2244 * unlink, so that file is not opened somewhere else
2246 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, inode->i_nlink ?
2247 CL_FSYNC_LOCAL : CL_FSYNC_DISCARD, 1);
2249 truncate_inode_pages_final(mapping);
2251 /* Workaround for LU-118: Note nrpages may not be totally updated when
2252 * truncate_inode_pages() returns, as there can be a page in the process
2253 * of deletion (inside __delete_from_page_cache()) in the specified
2254 * range. Thus mapping->nrpages can be non-zero when this function
2255 * returns even after truncation of the whole mapping. Only do this if
2256 * npages isn't already zero.
2258 nrpages = mapping->nrpages;
2260 xa_lock_irqsave(&mapping->i_pages, flags);
2261 nrpages = mapping->nrpages;
2262 xa_unlock_irqrestore(&mapping->i_pages, flags);
2263 } /* Workaround end */
2265 LASSERTF(nrpages == 0, "%s: inode="DFID"(%p) nrpages=%lu, "
2266 "see https://jira.whamcloud.com/browse/LU-118\n",
2267 ll_i2sbi(inode)->ll_fsname,
2268 PFID(ll_inode2fid(inode)), inode, nrpages);
2270 ll_clear_inode(inode);
2276 int ll_iocontrol(struct inode *inode, struct file *file,
2277 unsigned int cmd, unsigned long arg)
2279 struct ll_sb_info *sbi = ll_i2sbi(inode);
2280 struct ptlrpc_request *req = NULL;
2285 case FS_IOC_GETFLAGS: {
2286 struct mdt_body *body;
2287 struct md_op_data *op_data;
2289 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2290 0, 0, LUSTRE_OPC_ANY,
2292 if (IS_ERR(op_data))
2293 RETURN(PTR_ERR(op_data));
2295 op_data->op_valid = OBD_MD_FLFLAGS;
2296 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2297 ll_finish_md_op_data(op_data);
2299 CERROR("%s: failure inode "DFID": rc = %d\n",
2300 sbi->ll_md_exp->exp_obd->obd_name,
2301 PFID(ll_inode2fid(inode)), rc);
2305 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2307 flags = body->mbo_flags;
2309 ptlrpc_req_finished(req);
2311 RETURN(put_user(flags, (int __user *)arg));
2313 case FS_IOC_SETFLAGS: {
2315 struct md_op_data *op_data;
2316 struct cl_object *obj;
2317 struct fsxattr fa = { 0 };
2319 if (get_user(flags, (int __user *)arg))
2322 fa.fsx_projid = ll_i2info(inode)->lli_projid;
2323 if (flags & LUSTRE_PROJINHERIT_FL)
2324 fa.fsx_xflags = FS_XFLAG_PROJINHERIT;
2326 rc = ll_ioctl_check_project(inode, &fa);
2330 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2331 LUSTRE_OPC_ANY, NULL);
2332 if (IS_ERR(op_data))
2333 RETURN(PTR_ERR(op_data));
2335 op_data->op_attr_flags = flags;
2336 op_data->op_xvalid |= OP_XVALID_FLAGS;
2337 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2338 ll_finish_md_op_data(op_data);
2339 ptlrpc_req_finished(req);
2343 ll_update_inode_flags(inode, flags);
2345 obj = ll_i2info(inode)->lli_clob;
2349 OBD_ALLOC_PTR(attr);
2353 rc = cl_setattr_ost(obj, attr, OP_XVALID_FLAGS, flags);
2365 int ll_flush_ctx(struct inode *inode)
2367 struct ll_sb_info *sbi = ll_i2sbi(inode);
2369 CDEBUG(D_SEC, "flush context for user %d\n",
2370 from_kuid(&init_user_ns, current_uid()));
2372 obd_set_info_async(NULL, sbi->ll_md_exp,
2373 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2375 obd_set_info_async(NULL, sbi->ll_dt_exp,
2376 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2381 /* umount -f client means force down, don't save state */
2382 void ll_umount_begin(struct super_block *sb)
2384 struct ll_sb_info *sbi = ll_s2sbi(sb);
2385 struct obd_device *obd;
2386 struct obd_ioctl_data *ioc_data;
2390 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2391 sb->s_count, atomic_read(&sb->s_active));
2393 obd = class_exp2obd(sbi->ll_md_exp);
2395 CERROR("Invalid MDC connection handle %#llx\n",
2396 sbi->ll_md_exp->exp_handle.h_cookie);
2402 obd = class_exp2obd(sbi->ll_dt_exp);
2404 CERROR("Invalid LOV connection handle %#llx\n",
2405 sbi->ll_dt_exp->exp_handle.h_cookie);
2411 OBD_ALLOC_PTR(ioc_data);
2413 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2414 sizeof *ioc_data, ioc_data, NULL);
2416 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2417 sizeof *ioc_data, ioc_data, NULL);
2419 OBD_FREE_PTR(ioc_data);
2422 /* Really, we'd like to wait until there are no requests outstanding,
2423 * and then continue. For now, we just periodically checking for vfs
2424 * to decrement mnt_cnt and hope to finish it within 10sec.
2428 !may_umount(sbi->ll_mnt.mnt)) {
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 & SB_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 |= SB_RDONLY;
2459 sb->s_flags &= ~SB_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_LUSTRE_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_intent_drop_lock(it);
2610 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2616 int ll_obd_statfs(struct inode *inode, void __user *arg)
2618 struct ll_sb_info *sbi = NULL;
2619 struct obd_export *exp;
2621 struct obd_ioctl_data *data = NULL;
2625 if (!inode || !(sbi = ll_i2sbi(inode)))
2626 GOTO(out_statfs, rc = -EINVAL);
2628 rc = obd_ioctl_getdata(&buf, &len, arg);
2630 GOTO(out_statfs, rc);
2633 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2634 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2635 GOTO(out_statfs, rc = -EINVAL);
2637 if (data->ioc_inllen1 != sizeof(__u32) ||
2638 data->ioc_inllen2 != sizeof(__u32) ||
2639 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2640 data->ioc_plen2 != sizeof(struct obd_uuid))
2641 GOTO(out_statfs, rc = -EINVAL);
2643 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2644 if (type & LL_STATFS_LMV)
2645 exp = sbi->ll_md_exp;
2646 else if (type & LL_STATFS_LOV)
2647 exp = sbi->ll_dt_exp;
2649 GOTO(out_statfs, rc = -ENODEV);
2651 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2653 GOTO(out_statfs, rc);
2655 OBD_FREE_LARGE(buf, len);
2660 * this is normally called in ll_fini_md_op_data(), but sometimes it needs to
2661 * be called early to avoid deadlock.
2663 void ll_unlock_md_op_lsm(struct md_op_data *op_data)
2665 if (op_data->op_mea2_sem) {
2666 up_read(op_data->op_mea2_sem);
2667 op_data->op_mea2_sem = NULL;
2670 if (op_data->op_mea1_sem) {
2671 up_read(op_data->op_mea1_sem);
2672 op_data->op_mea1_sem = NULL;
2676 /* this function prepares md_op_data hint for passing it down to MD stack. */
2677 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
2678 struct inode *i1, struct inode *i2,
2679 const char *name, size_t namelen,
2680 __u32 mode, enum md_op_code opc,
2683 LASSERT(i1 != NULL);
2686 /* Do not reuse namelen for something else. */
2688 return ERR_PTR(-EINVAL);
2690 if (namelen > ll_i2sbi(i1)->ll_namelen)
2691 return ERR_PTR(-ENAMETOOLONG);
2693 if (!lu_name_is_valid_2(name, namelen))
2694 return ERR_PTR(-EINVAL);
2697 if (op_data == NULL)
2698 OBD_ALLOC_PTR(op_data);
2700 if (op_data == NULL)
2701 return ERR_PTR(-ENOMEM);
2703 ll_i2gids(op_data->op_suppgids, i1, i2);
2704 op_data->op_fid1 = *ll_inode2fid(i1);
2705 op_data->op_code = opc;
2707 if (S_ISDIR(i1->i_mode)) {
2708 down_read(&ll_i2info(i1)->lli_lsm_sem);
2709 op_data->op_mea1_sem = &ll_i2info(i1)->lli_lsm_sem;
2710 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2711 op_data->op_default_mea1 = ll_i2info(i1)->lli_default_lsm_md;
2715 op_data->op_fid2 = *ll_inode2fid(i2);
2716 if (S_ISDIR(i2->i_mode)) {
2718 down_read(&ll_i2info(i2)->lli_lsm_sem);
2719 op_data->op_mea2_sem =
2720 &ll_i2info(i2)->lli_lsm_sem;
2722 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2725 fid_zero(&op_data->op_fid2);
2728 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2729 op_data->op_cli_flags |= CLI_HASH64;
2731 if (ll_need_32bit_api(ll_i2sbi(i1)))
2732 op_data->op_cli_flags |= CLI_API32;
2734 op_data->op_name = name;
2735 op_data->op_namelen = namelen;
2736 op_data->op_mode = mode;
2737 op_data->op_mod_time = ktime_get_real_seconds();
2738 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2739 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2740 op_data->op_cap = cfs_curproc_cap_pack();
2741 op_data->op_mds = 0;
2742 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2743 filename_is_volatile(name, namelen, &op_data->op_mds)) {
2744 op_data->op_bias |= MDS_CREATE_VOLATILE;
2746 op_data->op_data = data;
2751 void ll_finish_md_op_data(struct md_op_data *op_data)
2753 ll_unlock_md_op_lsm(op_data);
2754 security_release_secctx(op_data->op_file_secctx,
2755 op_data->op_file_secctx_size);
2756 OBD_FREE_PTR(op_data);
2759 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2761 struct ll_sb_info *sbi;
2763 LASSERT(seq && dentry);
2764 sbi = ll_s2sbi(dentry->d_sb);
2766 if (sbi->ll_flags & LL_SBI_NOLCK)
2767 seq_puts(seq, ",nolock");
2769 /* "flock" is the default since 2.13, but it wasn't for many years,
2770 * so it is still useful to print this to show it is enabled.
2771 * Start to print "noflock" so it is now clear when flock is disabled.
2773 if (sbi->ll_flags & LL_SBI_FLOCK)
2774 seq_puts(seq, ",flock");
2775 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2776 seq_puts(seq, ",localflock");
2778 seq_puts(seq, ",noflock");
2780 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2781 seq_puts(seq, ",user_xattr");
2783 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2784 seq_puts(seq, ",lazystatfs");
2786 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2787 seq_puts(seq, ",user_fid2path");
2789 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
2790 seq_puts(seq, ",always_ping");
2796 * Get obd name by cmd, and copy out to user space
2798 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2800 struct ll_sb_info *sbi = ll_i2sbi(inode);
2801 struct obd_device *obd;
2804 if (cmd == OBD_IOC_GETDTNAME)
2805 obd = class_exp2obd(sbi->ll_dt_exp);
2806 else if (cmd == OBD_IOC_GETMDNAME)
2807 obd = class_exp2obd(sbi->ll_md_exp);
2814 if (copy_to_user((void __user *)arg, obd->obd_name,
2815 strlen(obd->obd_name) + 1))
2821 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2828 p.mnt = current->fs->root.mnt;
2830 path = d_path(&p, buf, bufsize);
2835 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2837 char *buf, *path = NULL;
2838 struct dentry *dentry = NULL;
2839 struct inode *inode = page->mapping->host;
2841 /* this can be called inside spin lock so use GFP_ATOMIC. */
2842 buf = (char *)__get_free_page(GFP_ATOMIC);
2844 dentry = d_find_alias(page->mapping->host);
2846 path = ll_d_path(dentry, buf, PAGE_SIZE);
2849 /* The below message is checked in recovery-small.sh test_24b */
2851 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2852 "(rc %d)\n", ll_i2sbi(inode)->ll_fsname,
2853 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2854 PFID(ll_inode2fid(inode)),
2855 (path && !IS_ERR(path)) ? path : "", ioret);
2861 free_page((unsigned long)buf);
2864 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
2865 struct lov_user_md **kbuf)
2867 struct lov_user_md lum;
2871 if (copy_from_user(&lum, md, sizeof(lum)))
2874 lum_size = ll_lov_user_md_size(&lum);
2878 OBD_ALLOC_LARGE(*kbuf, lum_size);
2882 if (copy_from_user(*kbuf, md, lum_size) != 0) {
2883 OBD_FREE_LARGE(*kbuf, lum_size);
2891 * Compute llite root squash state after a change of root squash
2892 * configuration setting or add/remove of a lnet nid
2894 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2896 struct root_squash_info *squash = &sbi->ll_squash;
2899 struct lnet_process_id id;
2901 /* Update norootsquash flag */
2902 spin_lock(&squash->rsi_lock);
2903 if (list_empty(&squash->rsi_nosquash_nids))
2904 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2906 /* Do not apply root squash as soon as one of our NIDs is
2907 * in the nosquash_nids list */
2910 while (LNetGetId(i++, &id) != -ENOENT) {
2911 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2913 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2919 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2921 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2923 spin_unlock(&squash->rsi_lock);
2927 * Parse linkea content to extract information about a given hardlink
2929 * \param[in] ldata - Initialized linkea data
2930 * \param[in] linkno - Link identifier
2931 * \param[out] parent_fid - The entry's parent FID
2932 * \param[out] ln - Entry name destination buffer
2934 * \retval 0 on success
2935 * \retval Appropriate negative error code on failure
2937 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
2938 struct lu_fid *parent_fid, struct lu_name *ln)
2944 rc = linkea_init_with_rec(ldata);
2948 if (linkno >= ldata->ld_leh->leh_reccount)
2949 /* beyond last link */
2952 linkea_first_entry(ldata);
2953 for (idx = 0; ldata->ld_lee != NULL; idx++) {
2954 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
2959 linkea_next_entry(ldata);
2969 * Get parent FID and name of an identified link. Operation is performed for
2970 * a given link number, letting the caller iterate over linkno to list one or
2971 * all links of an entry.
2973 * \param[in] file - File descriptor against which to perform the operation
2974 * \param[in,out] arg - User-filled structure containing the linkno to operate
2975 * on and the available size. It is eventually filled with
2976 * the requested information or left untouched on error
2978 * \retval - 0 on success
2979 * \retval - Appropriate negative error code on failure
2981 int ll_getparent(struct file *file, struct getparent __user *arg)
2983 struct inode *inode = file_inode(file);
2984 struct linkea_data *ldata;
2985 struct lu_buf buf = LU_BUF_NULL;
2987 struct lu_fid parent_fid;
2994 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
2995 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
2998 if (get_user(name_size, &arg->gp_name_size))
3001 if (get_user(linkno, &arg->gp_linkno))
3004 if (name_size > PATH_MAX)
3007 OBD_ALLOC(ldata, sizeof(*ldata));
3011 rc = linkea_data_new(ldata, &buf);
3013 GOTO(ldata_free, rc);
3015 rc = ll_xattr_list(inode, XATTR_NAME_LINK, XATTR_TRUSTED_T, buf.lb_buf,
3016 buf.lb_len, OBD_MD_FLXATTR);
3020 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
3024 if (ln.ln_namelen >= name_size)
3025 GOTO(lb_free, rc = -EOVERFLOW);
3027 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
3028 GOTO(lb_free, rc = -EFAULT);
3030 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
3031 GOTO(lb_free, rc = -EFAULT);
3033 if (put_user('\0', arg->gp_name + ln.ln_namelen))
3034 GOTO(lb_free, rc = -EFAULT);
3039 OBD_FREE(ldata, sizeof(*ldata));