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;
96 pages = si.totalram - si.totalhigh;
97 lru_page_max = pages / 2;
99 /* initialize ll_cache data */
100 sbi->ll_cache = cl_cache_init(lru_page_max);
101 if (sbi->ll_cache == NULL)
102 GOTO(out_pcc, rc = -ENOMEM);
104 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
105 SBI_DEFAULT_READAHEAD_MAX);
106 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
107 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = -1;
109 sbi->ll_flags |= LL_SBI_VERBOSE;
110 #ifdef ENABLE_CHECKSUM
111 sbi->ll_flags |= LL_SBI_CHECKSUM;
114 sbi->ll_flags |= LL_SBI_FLOCK;
117 #ifdef HAVE_LRU_RESIZE_SUPPORT
118 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
120 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
122 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
123 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
125 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
129 /* metadata statahead is enabled by default */
130 sbi->ll_sa_running_max = LL_SA_RUNNING_DEF;
131 sbi->ll_sa_max = LL_SA_RPC_DEF;
132 atomic_set(&sbi->ll_sa_total, 0);
133 atomic_set(&sbi->ll_sa_wrong, 0);
134 atomic_set(&sbi->ll_sa_running, 0);
135 atomic_set(&sbi->ll_agl_total, 0);
136 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
137 sbi->ll_flags |= LL_SBI_FAST_READ;
138 sbi->ll_flags |= LL_SBI_TINY_WRITE;
141 sbi->ll_squash.rsi_uid = 0;
142 sbi->ll_squash.rsi_gid = 0;
143 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
144 init_rwsem(&sbi->ll_squash.rsi_sem);
146 /* Per-filesystem file heat */
147 sbi->ll_heat_decay_weight = SBI_DEFAULT_HEAT_DECAY_WEIGHT;
148 sbi->ll_heat_period_second = SBI_DEFAULT_HEAT_PERIOD_SECOND;
151 pcc_super_fini(&sbi->ll_pcc_super);
157 static void ll_free_sbi(struct super_block *sb)
159 struct ll_sb_info *sbi = ll_s2sbi(sb);
163 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
164 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
165 if (sbi->ll_cache != NULL) {
166 cl_cache_decref(sbi->ll_cache);
167 sbi->ll_cache = NULL;
169 pcc_super_fini(&sbi->ll_pcc_super);
170 OBD_FREE(sbi, sizeof(*sbi));
175 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
176 struct vfsmount *mnt)
178 struct inode *root = NULL;
179 struct ll_sb_info *sbi = ll_s2sbi(sb);
180 struct obd_statfs *osfs = NULL;
181 struct ptlrpc_request *request = NULL;
182 struct obd_connect_data *data = NULL;
183 struct obd_uuid *uuid;
184 struct md_op_data *op_data;
185 struct lustre_md lmd;
187 int size, err, checksum;
190 sbi->ll_md_obd = class_name2obd(md);
191 if (!sbi->ll_md_obd) {
192 CERROR("MD %s: not setup or attached\n", md);
206 /* pass client page size via ocd_grant_blkbits, the server should report
207 * back its backend blocksize for grant calculation purpose */
208 data->ocd_grant_blkbits = PAGE_SHIFT;
210 /* indicate MDT features supported by this client */
211 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
212 OBD_CONNECT_ATTRFID | OBD_CONNECT_GRANT |
213 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
214 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
215 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
216 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
217 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
218 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
219 OBD_CONNECT_64BITHASH |
220 OBD_CONNECT_EINPROGRESS |
221 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
222 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
223 OBD_CONNECT_MAX_EASIZE |
224 OBD_CONNECT_FLOCK_DEAD |
225 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
226 OBD_CONNECT_OPEN_BY_FID |
227 OBD_CONNECT_DIR_STRIPE |
228 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_CKSUM |
229 OBD_CONNECT_SUBTREE |
230 OBD_CONNECT_MULTIMODRPCS |
231 OBD_CONNECT_GRANT_PARAM |
232 OBD_CONNECT_SHORTIO | OBD_CONNECT_FLAGS2;
234 data->ocd_connect_flags2 = OBD_CONNECT2_DIR_MIGRATE |
235 OBD_CONNECT2_SUM_STATFS |
236 OBD_CONNECT2_OVERSTRIPING |
238 OBD_CONNECT2_LOCK_CONVERT |
239 OBD_CONNECT2_ARCHIVE_ID_ARRAY |
241 OBD_CONNECT2_ASYNC_DISCARD |
244 #ifdef HAVE_LRU_RESIZE_SUPPORT
245 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
246 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
248 #ifdef CONFIG_FS_POSIX_ACL
249 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK |
250 OBD_CONNECT_LARGE_ACL;
253 data->ocd_cksum_types = obd_cksum_types_supported_client();
255 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
256 /* flag mdc connection as lightweight, only used for test
257 * purpose, use with care */
258 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
260 data->ocd_ibits_known = MDS_INODELOCK_FULL;
261 data->ocd_version = LUSTRE_VERSION_CODE;
263 if (sb->s_flags & MS_RDONLY)
264 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
265 if (sbi->ll_flags & LL_SBI_USER_XATTR)
266 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
269 /* Setting this indicates we correctly support S_NOSEC (See kernel
270 * commit 9e1f1de02c2275d7172e18dc4e7c2065777611bf)
272 sb->s_flags |= MS_NOSEC;
275 if (sbi->ll_flags & LL_SBI_FLOCK)
276 sbi->ll_fop = &ll_file_operations_flock;
277 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
278 sbi->ll_fop = &ll_file_operations;
280 sbi->ll_fop = &ll_file_operations_noflock;
282 /* always ping even if server suppress_pings */
283 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
284 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
286 obd_connect_set_secctx(data);
288 #if defined(CONFIG_SECURITY)
289 data->ocd_connect_flags2 |= OBD_CONNECT2_SELINUX_POLICY;
292 data->ocd_brw_size = MD_MAX_BRW_SIZE;
294 err = obd_connect(NULL, &sbi->ll_md_exp, sbi->ll_md_obd,
295 &sbi->ll_sb_uuid, data, sbi->ll_cache);
297 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
298 "recovery, of which this client is not a "
299 "part. Please wait for recovery to complete,"
300 " abort, or time out.\n", md);
303 CERROR("cannot connect to %s: rc = %d\n", md, err);
307 sbi->ll_md_exp->exp_connect_data = *data;
309 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
310 LUSTRE_SEQ_METADATA);
312 CERROR("%s: Can't init metadata layer FID infrastructure, "
313 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
317 /* For mount, we only need fs info from MDT0, and also in DNE, it
318 * can make sure the client can be mounted as long as MDT0 is
320 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
321 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
322 OBD_STATFS_FOR_MDT0);
324 GOTO(out_md_fid, err);
326 /* This needs to be after statfs to ensure connect has finished.
327 * Note that "data" does NOT contain the valid connect reply.
328 * If connecting to a 1.8 server there will be no LMV device, so
329 * we can access the MDC export directly and exp_connect_flags will
330 * be non-zero, but if accessing an upgraded 2.1 server it will
331 * have the correct flags filled in.
332 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
333 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
334 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
335 valid != CLIENT_CONNECT_MDT_REQD) {
338 OBD_ALLOC_WAIT(buf, PAGE_SIZE);
339 obd_connect_flags2str(buf, PAGE_SIZE,
340 valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
341 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
342 "feature(s) needed for correct operation "
343 "of this client (%s). Please upgrade "
344 "server or downgrade client.\n",
345 sbi->ll_md_exp->exp_obd->obd_name, buf);
346 OBD_FREE(buf, PAGE_SIZE);
347 GOTO(out_md_fid, err = -EPROTO);
350 size = sizeof(*data);
351 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
352 KEY_CONN_DATA, &size, data);
354 CERROR("%s: Get connect data failed: rc = %d\n",
355 sbi->ll_md_exp->exp_obd->obd_name, err);
356 GOTO(out_md_fid, err);
359 LASSERT(osfs->os_bsize);
360 sb->s_blocksize = osfs->os_bsize;
361 sb->s_blocksize_bits = log2(osfs->os_bsize);
362 sb->s_magic = LL_SUPER_MAGIC;
363 sb->s_maxbytes = MAX_LFS_FILESIZE;
364 sbi->ll_namelen = osfs->os_namelen;
365 sbi->ll_mnt.mnt = current->fs->root.mnt;
367 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
368 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
369 LCONSOLE_INFO("Disabling user_xattr feature because "
370 "it is not supported on the server\n");
371 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
374 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
376 sb->s_flags |= MS_POSIXACL;
378 sbi->ll_flags |= LL_SBI_ACL;
380 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
382 sb->s_flags &= ~MS_POSIXACL;
384 sbi->ll_flags &= ~LL_SBI_ACL;
387 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
388 sbi->ll_flags |= LL_SBI_64BIT_HASH;
390 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
391 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
393 if (obd_connect_has_secctx(data))
394 sbi->ll_flags |= LL_SBI_FILE_SECCTX;
396 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
397 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
398 LCONSOLE_INFO("%s: disabling xattr cache due to "
399 "unknown maximum xattr size.\n", dt);
400 } else if (!sbi->ll_xattr_cache_set) {
401 /* If xattr_cache is already set (no matter 0 or 1)
402 * during processing llog, it won't be enabled here. */
403 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
404 sbi->ll_xattr_cache_enabled = 1;
408 sbi->ll_dt_obd = class_name2obd(dt);
409 if (!sbi->ll_dt_obd) {
410 CERROR("DT %s: not setup or attached\n", dt);
411 GOTO(out_md_fid, err = -ENODEV);
414 /* pass client page size via ocd_grant_blkbits, the server should report
415 * back its backend blocksize for grant calculation purpose */
416 data->ocd_grant_blkbits = PAGE_SHIFT;
418 /* indicate OST features supported by this client */
419 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
420 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
421 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
422 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
423 OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
424 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
425 OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
426 OBD_CONNECT_EINPROGRESS |
427 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
428 OBD_CONNECT_LAYOUTLOCK |
429 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
430 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_SHORTIO |
431 OBD_CONNECT_FLAGS2 | OBD_CONNECT_GRANT_SHRINK;
433 /* The client currently advertises support for OBD_CONNECT_LOCKAHEAD_OLD so it
434 * can interoperate with an older version of lockahead which was released prior
435 * to landing in master. This support will be dropped when 2.13 development
436 * starts. At the point, we should not just drop the connect flag (below), we
437 * should also remove the support in the code.
439 * Removing it means a few things:
440 * 1. Remove this section here
441 * 2. Remove CEF_NONBLOCK in ll_file_lockahead()
442 * 3. Remove function exp_connect_lockahead_old
443 * 4. Remove LDLM_FL_LOCKAHEAD_OLD_RESERVED in lustre_dlm_flags.h
445 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 12, 50, 0)
446 data->ocd_connect_flags |= OBD_CONNECT_LOCKAHEAD_OLD;
449 data->ocd_connect_flags2 = OBD_CONNECT2_LOCKAHEAD;
451 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
452 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
454 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
455 * disabled by default, because it can still be enabled on the
456 * fly via /sys. As a consequence, we still need to come to an
457 * agreement on the supported algorithms at connect time
459 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
461 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
462 data->ocd_cksum_types = OBD_CKSUM_ADLER;
464 data->ocd_cksum_types = obd_cksum_types_supported_client();
466 #ifdef HAVE_LRU_RESIZE_SUPPORT
467 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
469 /* always ping even if server suppress_pings */
470 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
471 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
473 CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d "
474 "ocd_grant: %d\n", data->ocd_connect_flags,
475 data->ocd_version, data->ocd_grant);
477 sbi->ll_dt_obd->obd_upcall.onu_owner = &sbi->ll_lco;
478 sbi->ll_dt_obd->obd_upcall.onu_upcall = cl_ocd_update;
480 data->ocd_brw_size = DT_MAX_BRW_SIZE;
482 err = obd_connect(NULL, &sbi->ll_dt_exp, sbi->ll_dt_obd,
483 &sbi->ll_sb_uuid, data, sbi->ll_cache);
485 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
486 "recovery, of which this client is not a "
487 "part. Please wait for recovery to "
488 "complete, abort, or time out.\n", dt);
491 CERROR("%s: Cannot connect to %s: rc = %d\n",
492 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
496 sbi->ll_dt_exp->exp_connect_data = *data;
498 /* Don't change value if it was specified in the config log */
499 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages == -1) {
500 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
501 max_t(unsigned long, SBI_DEFAULT_READAHEAD_WHOLE_MAX,
502 (data->ocd_brw_size >> PAGE_SHIFT));
503 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages >
504 sbi->ll_ra_info.ra_max_pages_per_file)
505 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
506 sbi->ll_ra_info.ra_max_pages_per_file;
509 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
510 LUSTRE_SEQ_METADATA);
512 CERROR("%s: Can't init data layer FID infrastructure, "
513 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
517 mutex_lock(&sbi->ll_lco.lco_lock);
518 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
519 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
520 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
521 mutex_unlock(&sbi->ll_lco.lco_lock);
523 fid_zero(&sbi->ll_root_fid);
524 err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
527 CERROR("cannot mds_connect: rc = %d\n", err);
528 GOTO(out_lock_cn_cb, err);
530 if (!fid_is_sane(&sbi->ll_root_fid)) {
531 CERROR("%s: Invalid root fid "DFID" during mount\n",
532 sbi->ll_md_exp->exp_obd->obd_name,
533 PFID(&sbi->ll_root_fid));
534 GOTO(out_lock_cn_cb, err = -EINVAL);
536 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
538 sb->s_op = &lustre_super_operations;
539 #ifdef HAVE_XATTR_HANDLER_FLAGS
540 sb->s_xattr = ll_xattr_handlers;
542 #if THREAD_SIZE >= 8192 /*b=17630*/
543 sb->s_export_op = &lustre_export_operations;
547 * XXX: move this to after cbd setup? */
548 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
549 if (sbi->ll_flags & LL_SBI_ACL)
550 valid |= OBD_MD_FLACL;
552 OBD_ALLOC_PTR(op_data);
554 GOTO(out_lock_cn_cb, err = -ENOMEM);
556 op_data->op_fid1 = sbi->ll_root_fid;
557 op_data->op_mode = 0;
558 op_data->op_valid = valid;
560 err = md_getattr(sbi->ll_md_exp, op_data, &request);
562 OBD_FREE_PTR(op_data);
564 CERROR("%s: md_getattr failed for root: rc = %d\n",
565 sbi->ll_md_exp->exp_obd->obd_name, err);
566 GOTO(out_lock_cn_cb, err);
569 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
570 sbi->ll_md_exp, &lmd);
572 CERROR("failed to understand root inode md: rc = %d\n", err);
573 ptlrpc_req_finished(request);
574 GOTO(out_lock_cn_cb, err);
577 LASSERT(fid_is_sane(&sbi->ll_root_fid));
578 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
579 sbi->ll_flags & LL_SBI_32BIT_API),
581 md_free_lustre_md(sbi->ll_md_exp, &lmd);
582 ptlrpc_req_finished(request);
585 #ifdef CONFIG_FS_POSIX_ACL
587 posix_acl_release(lmd.posix_acl);
588 lmd.posix_acl = NULL;
591 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
593 CERROR("lustre_lite: bad iget4 for root\n");
597 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
598 if (sbi->ll_checksum_set) {
599 err = obd_set_info_async(NULL, sbi->ll_dt_exp,
600 sizeof(KEY_CHECKSUM), KEY_CHECKSUM,
601 sizeof(checksum), &checksum, NULL);
603 CERROR("%s: Set checksum failed: rc = %d\n",
604 sbi->ll_dt_exp->exp_obd->obd_name, err);
610 sb->s_root = d_make_root(root);
611 if (sb->s_root == NULL) {
613 CERROR("%s: can't make root dentry: rc = %d\n",
614 sbi->ll_fsname, err);
617 #ifdef HAVE_DCACHE_LOCK
618 sb->s_root->d_op = &ll_d_ops;
621 sbi->ll_sdev_orig = sb->s_dev;
623 /* We set sb->s_dev equal on all lustre clients in order to support
624 * NFS export clustering. NFSD requires that the FSID be the same
626 /* s_dev is also used in lt_compare() to compare two fs, but that is
627 * only a node-local comparison. */
628 uuid = obd_get_uuid(sbi->ll_md_exp);
630 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
637 if (sbi->ll_dt_obd) {
638 err = sysfs_create_link(&sbi->ll_kset.kobj,
639 &sbi->ll_dt_obd->obd_kset.kobj,
640 sbi->ll_dt_obd->obd_type->typ_name);
642 CERROR("%s: could not register %s in llite: rc = %d\n",
643 dt, sbi->ll_fsname, err);
648 if (sbi->ll_md_obd) {
649 err = sysfs_create_link(&sbi->ll_kset.kobj,
650 &sbi->ll_md_obd->obd_kset.kobj,
651 sbi->ll_md_obd->obd_type->typ_name);
653 CERROR("%s: could not register %s in llite: rc = %d\n",
654 md, sbi->ll_fsname, err);
664 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
666 obd_disconnect(sbi->ll_dt_exp);
667 sbi->ll_dt_exp = NULL;
668 sbi->ll_dt_obd = NULL;
670 obd_fid_fini(sbi->ll_md_exp->exp_obd);
672 obd_disconnect(sbi->ll_md_exp);
673 sbi->ll_md_exp = NULL;
674 sbi->ll_md_obd = NULL;
683 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
687 size = sizeof(*lmmsize);
688 rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
689 KEY_MAX_EASIZE, &size, lmmsize);
691 CERROR("%s: cannot get max LOV EA size: rc = %d\n",
692 sbi->ll_dt_exp->exp_obd->obd_name, rc);
696 CDEBUG(D_INFO, "max LOV ea size: %d\n", *lmmsize);
699 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
700 KEY_MAX_EASIZE, &size, lmmsize);
702 CERROR("Get max mdsize error rc %d\n", rc);
704 CDEBUG(D_INFO, "max LMV ea size: %d\n", *lmmsize);
710 * Get the value of the default_easize parameter.
712 * \see client_obd::cl_default_mds_easize
714 * \param[in] sbi superblock info for this filesystem
715 * \param[out] lmmsize pointer to storage location for value
717 * \retval 0 on success
718 * \retval negative negated errno on failure
720 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
725 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
726 KEY_DEFAULT_EASIZE, &size, lmmsize);
728 CERROR("Get default mdsize error rc %d\n", rc);
734 * Set the default_easize parameter to the given value.
736 * \see client_obd::cl_default_mds_easize
738 * \param[in] sbi superblock info for this filesystem
739 * \param[in] lmmsize the size to set
741 * \retval 0 on success
742 * \retval negative negated errno on failure
744 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
748 if (lmmsize < sizeof(struct lov_mds_md) ||
749 lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
752 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
753 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
754 sizeof(int), &lmmsize, NULL);
759 static void client_common_put_super(struct super_block *sb)
761 struct ll_sb_info *sbi = ll_s2sbi(sb);
766 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
767 obd_disconnect(sbi->ll_dt_exp);
768 sbi->ll_dt_exp = NULL;
770 ll_debugfs_unregister_super(sb);
772 obd_fid_fini(sbi->ll_md_exp->exp_obd);
773 obd_disconnect(sbi->ll_md_exp);
774 sbi->ll_md_exp = NULL;
779 void ll_kill_super(struct super_block *sb)
781 struct ll_sb_info *sbi;
785 if (!(sb->s_flags & MS_ACTIVE))
789 /* we need restore s_dev from changed for clustred NFS before put_super
790 * because new kernels have cached s_dev and change sb->s_dev in
791 * put_super not affected real removing devices */
793 sb->s_dev = sbi->ll_sdev_orig;
794 sbi->ll_umounting = 1;
796 /* wait running statahead threads to quit */
797 while (atomic_read(&sbi->ll_sa_running) > 0) {
798 set_current_state(TASK_UNINTERRUPTIBLE);
799 schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC >> 3));
806 static inline int ll_set_opt(const char *opt, char *data, int fl)
808 if (strncmp(opt, data, strlen(opt)) != 0)
814 /* non-client-specific mount options are parsed in lmd_parse */
815 static int ll_options(char *options, struct ll_sb_info *sbi)
818 char *s1 = options, *s2;
819 int *flags = &sbi->ll_flags;
825 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
828 CDEBUG(D_SUPER, "next opt=%s\n", s1);
829 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
834 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
839 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
844 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
849 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
854 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
859 tmp = ll_set_opt("context", s1, 1);
862 tmp = ll_set_opt("fscontext", s1, 1);
865 tmp = ll_set_opt("defcontext", s1, 1);
868 tmp = ll_set_opt("rootcontext", s1, 1);
871 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
876 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
882 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
885 sbi->ll_checksum_set = 1;
888 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
891 sbi->ll_checksum_set = 1;
894 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
899 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
904 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
909 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
914 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
919 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
924 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
929 tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
934 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
940 s2 = strchr(s1, ',');
948 void ll_lli_init(struct ll_inode_info *lli)
950 lli->lli_inode_magic = LLI_INODE_MAGIC;
952 spin_lock_init(&lli->lli_lock);
953 lli->lli_posix_acl = NULL;
954 /* Do not set lli_fid, it has been initialized already. */
955 fid_zero(&lli->lli_pfid);
956 lli->lli_mds_read_och = NULL;
957 lli->lli_mds_write_och = NULL;
958 lli->lli_mds_exec_och = NULL;
959 lli->lli_open_fd_read_count = 0;
960 lli->lli_open_fd_write_count = 0;
961 lli->lli_open_fd_exec_count = 0;
962 mutex_init(&lli->lli_och_mutex);
963 spin_lock_init(&lli->lli_agl_lock);
964 spin_lock_init(&lli->lli_layout_lock);
965 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
966 lli->lli_clob = NULL;
968 init_rwsem(&lli->lli_xattrs_list_rwsem);
969 mutex_init(&lli->lli_xattrs_enq_lock);
971 LASSERT(lli->lli_vfs_inode.i_mode != 0);
972 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
973 mutex_init(&lli->lli_readdir_mutex);
974 lli->lli_opendir_key = NULL;
976 spin_lock_init(&lli->lli_sa_lock);
977 lli->lli_opendir_pid = 0;
978 lli->lli_sa_enabled = 0;
979 init_rwsem(&lli->lli_lsm_sem);
981 mutex_init(&lli->lli_size_mutex);
982 lli->lli_symlink_name = NULL;
983 init_rwsem(&lli->lli_trunc_sem);
984 range_lock_tree_init(&lli->lli_write_tree);
985 init_rwsem(&lli->lli_glimpse_sem);
986 lli->lli_glimpse_time = ktime_set(0, 0);
987 INIT_LIST_HEAD(&lli->lli_agl_list);
988 lli->lli_agl_index = 0;
989 lli->lli_async_rc = 0;
990 spin_lock_init(&lli->lli_heat_lock);
991 obd_heat_clear(lli->lli_heat_instances, OBD_HEAT_COUNT);
992 lli->lli_heat_flags = 0;
993 mutex_init(&lli->lli_pcc_lock);
994 lli->lli_pcc_state = PCC_STATE_FL_NONE;
995 lli->lli_pcc_inode = NULL;
997 mutex_init(&lli->lli_layout_mutex);
998 memset(lli->lli_jobid, 0, sizeof(lli->lli_jobid));
1001 #define MAX_STRING_SIZE 128
1003 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1005 #define LSI_BDI_INITIALIZED 0x00400000
1007 #ifndef HAVE_BDI_CAP_MAP_COPY
1008 # define BDI_CAP_MAP_COPY 0
1011 static int super_setup_bdi_name(struct super_block *sb, char *fmt, ...)
1013 struct lustre_sb_info *lsi = s2lsi(sb);
1014 char buf[MAX_STRING_SIZE];
1018 err = bdi_init(&lsi->lsi_bdi);
1022 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1023 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1024 lsi->lsi_bdi.name = "lustre";
1025 va_start(args, fmt);
1026 vsnprintf(buf, MAX_STRING_SIZE, fmt, args);
1028 err = bdi_register(&lsi->lsi_bdi, NULL, "%s", buf);
1031 sb->s_bdi = &lsi->lsi_bdi;
1035 #endif /* !HAVE_SUPER_SETUP_BDI_NAME */
1037 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
1039 struct lustre_profile *lprof = NULL;
1040 struct lustre_sb_info *lsi = s2lsi(sb);
1041 struct ll_sb_info *sbi = NULL;
1042 char *dt = NULL, *md = NULL;
1043 char *profilenm = get_profile_name(sb);
1044 struct config_llog_instance *cfg;
1045 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1046 const int instlen = 16 + 2;
1047 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1048 char name[MAX_STRING_SIZE];
1057 /* for ASLR, to map between cfg_instance and hashed ptr */
1058 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1059 profilenm, cfg_instance, sb);
1061 try_module_get(THIS_MODULE);
1065 GOTO(out_free_cfg, err = -ENOMEM);
1067 /* client additional sb info */
1068 lsi->lsi_llsbi = sbi = ll_init_sbi();
1070 GOTO(out_free_cfg, err = PTR_ERR(sbi));
1072 err = ll_options(lsi->lsi_lmd->lmd_opts, sbi);
1074 GOTO(out_free_cfg, err);
1076 #ifndef HAVE_DCACHE_LOCK
1077 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1078 sb->s_d_op = &ll_d_ops;
1081 generate_random_uuid(uuid.b);
1082 snprintf(sbi->ll_sb_uuid.uuid, UUID_SIZE, "%pU", uuid.b);
1084 CDEBUG(D_CONFIG, "llite sb uuid: %s\n", sbi->ll_sb_uuid.uuid);
1087 len = strlen(profilenm);
1088 ptr = strrchr(profilenm, '-');
1089 if (ptr && (strcmp(ptr, "-client") == 0))
1092 if (len > LUSTRE_MAXFSNAME) {
1093 if (unlikely(len >= MAX_STRING_SIZE))
1094 len = MAX_STRING_SIZE - 1;
1095 strncpy(name, profilenm, len);
1097 err = -ENAMETOOLONG;
1098 CERROR("%s: fsname longer than %u characters: rc = %d\n",
1099 name, LUSTRE_MAXFSNAME, err);
1100 GOTO(out_free_cfg, err);
1102 strncpy(sbi->ll_fsname, profilenm, len);
1103 sbi->ll_fsname[len] = '\0';
1106 snprintf(name, sizeof(name), "%.*s-%016lx", len,
1107 profilenm, cfg_instance);
1109 err = super_setup_bdi_name(sb, "%s", name);
1111 GOTO(out_free_cfg, err);
1113 /* Call ll_debugfs_register_super() before lustre_process_log()
1114 * so that "llite.*.*" params can be processed correctly.
1116 err = ll_debugfs_register_super(sb, name);
1118 CERROR("%s: could not register mountpoint in llite: rc = %d\n",
1119 sbi->ll_fsname, err);
1123 /* The cfg_instance is a value unique to this super, in case some
1124 * joker tries to mount the same fs at two mount points.
1126 cfg->cfg_instance = cfg_instance;
1127 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1128 cfg->cfg_callback = class_config_llog_handler;
1129 cfg->cfg_sub_clds = CONFIG_SUB_CLIENT;
1130 /* set up client obds */
1131 err = lustre_process_log(sb, profilenm, cfg);
1133 GOTO(out_debugfs, err);
1135 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1136 lprof = class_get_profile(profilenm);
1137 if (lprof == NULL) {
1138 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1139 " read from the MGS. Does that filesystem "
1140 "exist?\n", profilenm);
1141 GOTO(out_debugfs, err = -EINVAL);
1143 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1144 lprof->lp_md, lprof->lp_dt);
1146 dt_len = strlen(lprof->lp_dt) + instlen + 2;
1147 OBD_ALLOC(dt, dt_len);
1149 GOTO(out_profile, err = -ENOMEM);
1150 snprintf(dt, dt_len - 1, "%s-%016lx", lprof->lp_dt, cfg_instance);
1152 md_len = strlen(lprof->lp_md) + instlen + 2;
1153 OBD_ALLOC(md, md_len);
1155 GOTO(out_free_dt, err = -ENOMEM);
1156 snprintf(md, md_len - 1, "%s-%016lx", lprof->lp_md, cfg_instance);
1158 /* connections, registrations, sb setup */
1159 err = client_common_fill_super(sb, md, dt, mnt);
1161 GOTO(out_free_md, err);
1163 sbi->ll_client_common_fill_super_succeeded = 1;
1167 OBD_FREE(md, md_len);
1170 OBD_FREE(dt, dt_len);
1173 class_put_profile(lprof);
1176 ll_debugfs_unregister_super(sb);
1183 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1184 LCONSOLE_WARN("Mounted %s\n", profilenm);
1186 } /* ll_fill_super */
1188 void ll_put_super(struct super_block *sb)
1190 struct config_llog_instance cfg, params_cfg;
1191 struct obd_device *obd;
1192 struct lustre_sb_info *lsi = s2lsi(sb);
1193 struct ll_sb_info *sbi = ll_s2sbi(sb);
1194 char *profilenm = get_profile_name(sb);
1195 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1197 int next, force = 1, rc = 0;
1201 GOTO(out_no_sbi, 0);
1203 /* Should replace instance_id with something better for ASLR */
1204 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1205 profilenm, cfg_instance, sb);
1207 cfg.cfg_instance = cfg_instance;
1208 lustre_end_log(sb, profilenm, &cfg);
1210 params_cfg.cfg_instance = cfg_instance;
1211 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1213 if (sbi->ll_md_exp) {
1214 obd = class_exp2obd(sbi->ll_md_exp);
1216 force = obd->obd_force;
1219 /* Wait for unstable pages to be committed to stable storage */
1221 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
1222 rc = l_wait_event(sbi->ll_cache->ccc_unstable_waitq,
1223 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0,
1227 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1228 if (force == 0 && rc != -EINTR)
1229 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1231 /* We need to set force before the lov_disconnect in
1232 lustre_common_put_super, since l_d cleans up osc's as well. */
1235 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1237 obd->obd_force = force;
1241 if (sbi->ll_client_common_fill_super_succeeded) {
1242 /* Only if client_common_fill_super succeeded */
1243 client_common_put_super(sb);
1247 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1248 class_manual_cleanup(obd);
1251 if (sbi->ll_flags & LL_SBI_VERBOSE)
1252 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1255 class_del_profile(profilenm);
1257 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1258 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1259 bdi_destroy(&lsi->lsi_bdi);
1260 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1265 lsi->lsi_llsbi = NULL;
1267 lustre_common_put_super(sb);
1269 cl_env_cache_purge(~0);
1271 module_put(THIS_MODULE);
1274 } /* client_put_super */
1276 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1278 struct inode *inode = NULL;
1280 /* NOTE: we depend on atomic igrab() -bzzz */
1281 lock_res_and_lock(lock);
1282 if (lock->l_resource->lr_lvb_inode) {
1283 struct ll_inode_info * lli;
1284 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1285 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1286 inode = igrab(lock->l_resource->lr_lvb_inode);
1288 inode = lock->l_resource->lr_lvb_inode;
1289 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1290 D_WARNING, lock, "lr_lvb_inode %p is "
1291 "bogus: magic %08x",
1292 lock->l_resource->lr_lvb_inode,
1293 lli->lli_inode_magic);
1297 unlock_res_and_lock(lock);
1301 void ll_dir_clear_lsm_md(struct inode *inode)
1303 struct ll_inode_info *lli = ll_i2info(inode);
1305 LASSERT(S_ISDIR(inode->i_mode));
1307 if (lli->lli_lsm_md) {
1308 lmv_free_memmd(lli->lli_lsm_md);
1309 lli->lli_lsm_md = NULL;
1312 if (lli->lli_default_lsm_md) {
1313 lmv_free_memmd(lli->lli_default_lsm_md);
1314 lli->lli_default_lsm_md = NULL;
1318 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1319 const struct lu_fid *fid,
1320 struct lustre_md *md)
1322 struct ll_sb_info *sbi = ll_s2sbi(sb);
1323 struct mdt_body *body = md->body;
1324 struct inode *inode;
1328 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1329 inode = iget_locked(sb, ino);
1330 if (inode == NULL) {
1331 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1332 sbi->ll_fsname, PFID(fid));
1333 RETURN(ERR_PTR(-ENOENT));
1336 if (inode->i_state & I_NEW) {
1337 struct ll_inode_info *lli = ll_i2info(inode);
1338 struct lmv_stripe_md *lsm = md->lmv;
1340 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1341 (body->mbo_mode & S_IFMT);
1342 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1345 inode->i_mtime.tv_sec = 0;
1346 inode->i_atime.tv_sec = 0;
1347 inode->i_ctime.tv_sec = 0;
1350 #ifdef HAVE_BACKING_DEV_INFO
1351 /* initializing backing dev info. */
1352 inode->i_mapping->backing_dev_info =
1353 &s2lsi(inode->i_sb)->lsi_bdi;
1355 inode->i_op = &ll_dir_inode_operations;
1356 inode->i_fop = &ll_dir_operations;
1357 lli->lli_fid = *fid;
1360 LASSERT(lsm != NULL);
1361 /* master object FID */
1362 lli->lli_pfid = body->mbo_fid1;
1363 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1364 lli, PFID(fid), PFID(&lli->lli_pfid));
1365 unlock_new_inode(inode);
1371 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1374 struct lmv_stripe_md *lsm = md->lmv;
1375 struct ll_inode_info *lli = ll_i2info(inode);
1378 LASSERT(lsm != NULL);
1380 CDEBUG(D_INODE, "%s: "DFID" set dir layout:\n",
1381 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1382 lsm_md_dump(D_INODE, lsm);
1384 if (!lmv_dir_striped(lsm))
1387 /* XXX sigh, this lsm_root initialization should be in
1388 * LMV layer, but it needs ll_iget right now, so we
1389 * put this here right now. */
1390 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1391 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1392 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1394 if (!fid_is_sane(fid))
1397 /* Unfortunately ll_iget will call ll_update_inode,
1398 * where the initialization of slave inode is slightly
1399 * different, so it reset lsm_md to NULL to avoid
1400 * initializing lsm for slave inode. */
1401 lsm->lsm_md_oinfo[i].lmo_root =
1402 ll_iget_anon_dir(inode->i_sb, fid, md);
1403 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1404 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1406 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1408 iput(lsm->lsm_md_oinfo[i].lmo_root);
1409 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1415 lli->lli_lsm_md = lsm;
1420 static void ll_update_default_lsm_md(struct inode *inode, struct lustre_md *md)
1422 struct ll_inode_info *lli = ll_i2info(inode);
1424 if (!md->default_lmv) {
1425 /* clear default lsm */
1426 if (lli->lli_default_lsm_md) {
1427 down_write(&lli->lli_lsm_sem);
1428 if (lli->lli_default_lsm_md) {
1429 lmv_free_memmd(lli->lli_default_lsm_md);
1430 lli->lli_default_lsm_md = NULL;
1432 up_write(&lli->lli_lsm_sem);
1434 } else if (lli->lli_default_lsm_md) {
1435 /* update default lsm if it changes */
1436 down_read(&lli->lli_lsm_sem);
1437 if (lli->lli_default_lsm_md &&
1438 !lsm_md_eq(lli->lli_default_lsm_md, md->default_lmv)) {
1439 up_read(&lli->lli_lsm_sem);
1440 down_write(&lli->lli_lsm_sem);
1441 if (lli->lli_default_lsm_md)
1442 lmv_free_memmd(lli->lli_default_lsm_md);
1443 lli->lli_default_lsm_md = md->default_lmv;
1444 lsm_md_dump(D_INODE, md->default_lmv);
1445 md->default_lmv = NULL;
1446 up_write(&lli->lli_lsm_sem);
1448 up_read(&lli->lli_lsm_sem);
1451 /* init default lsm */
1452 down_write(&lli->lli_lsm_sem);
1453 lli->lli_default_lsm_md = md->default_lmv;
1454 lsm_md_dump(D_INODE, md->default_lmv);
1455 md->default_lmv = NULL;
1456 up_write(&lli->lli_lsm_sem);
1460 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1462 struct ll_inode_info *lli = ll_i2info(inode);
1463 struct lmv_stripe_md *lsm = md->lmv;
1468 LASSERT(S_ISDIR(inode->i_mode));
1469 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1470 PFID(ll_inode2fid(inode)));
1472 /* update default LMV */
1473 if (md->default_lmv)
1474 ll_update_default_lsm_md(inode, md);
1477 * no striped information from request, lustre_md from req does not
1478 * include stripeEA, see ll_md_setattr()
1484 * normally dir layout doesn't change, only take read lock to check
1485 * that to avoid blocking other MD operations.
1487 if (lli->lli_lsm_md)
1488 down_read(&lli->lli_lsm_sem);
1490 down_write(&lli->lli_lsm_sem);
1493 * if dir layout mismatch, check whether version is increased, which
1494 * means layout is changed, this happens in dir migration and lfsck.
1496 * foreign LMV should not change.
1498 if (lli->lli_lsm_md && !lsm_md_eq(lli->lli_lsm_md, lsm)) {
1499 if (lmv_dir_striped(lli->lli_lsm_md) &&
1500 lsm->lsm_md_layout_version <=
1501 lli->lli_lsm_md->lsm_md_layout_version) {
1502 CERROR("%s: "DFID" dir layout mismatch:\n",
1503 ll_i2sbi(inode)->ll_fsname,
1504 PFID(&lli->lli_fid));
1505 lsm_md_dump(D_ERROR, lli->lli_lsm_md);
1506 lsm_md_dump(D_ERROR, lsm);
1507 GOTO(unlock, rc = -EINVAL);
1510 /* layout changed, switch to write lock */
1511 up_read(&lli->lli_lsm_sem);
1512 down_write(&lli->lli_lsm_sem);
1513 ll_dir_clear_lsm_md(inode);
1516 /* set directory layout */
1517 if (!lli->lli_lsm_md) {
1518 struct cl_attr *attr;
1520 rc = ll_init_lsm_md(inode, md);
1521 up_write(&lli->lli_lsm_sem);
1525 /* set md->lmv to NULL, so the following free lustre_md
1526 * will not free this lsm */
1530 * md_merge_attr() may take long, since lsm is already set,
1531 * switch to read lock.
1533 down_read(&lli->lli_lsm_sem);
1535 if (!lmv_dir_striped(lli->lli_lsm_md))
1538 OBD_ALLOC_PTR(attr);
1540 GOTO(unlock, rc = -ENOMEM);
1542 /* validate the lsm */
1543 rc = md_merge_attr(ll_i2mdexp(inode), lsm, attr,
1544 ll_md_blocking_ast);
1550 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1551 md->body->mbo_nlink = attr->cat_nlink;
1552 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1553 md->body->mbo_size = attr->cat_size;
1554 if (md->body->mbo_valid & OBD_MD_FLATIME)
1555 md->body->mbo_atime = attr->cat_atime;
1556 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1557 md->body->mbo_ctime = attr->cat_ctime;
1558 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1559 md->body->mbo_mtime = attr->cat_mtime;
1564 up_read(&lli->lli_lsm_sem);
1569 void ll_clear_inode(struct inode *inode)
1571 struct ll_inode_info *lli = ll_i2info(inode);
1572 struct ll_sb_info *sbi = ll_i2sbi(inode);
1576 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1577 PFID(ll_inode2fid(inode)), inode);
1579 if (S_ISDIR(inode->i_mode)) {
1580 /* these should have been cleared in ll_file_release */
1581 LASSERT(lli->lli_opendir_key == NULL);
1582 LASSERT(lli->lli_sai == NULL);
1583 LASSERT(lli->lli_opendir_pid == 0);
1585 pcc_inode_free(inode);
1588 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1590 LASSERT(!lli->lli_open_fd_write_count);
1591 LASSERT(!lli->lli_open_fd_read_count);
1592 LASSERT(!lli->lli_open_fd_exec_count);
1594 if (lli->lli_mds_write_och)
1595 ll_md_real_close(inode, FMODE_WRITE);
1596 if (lli->lli_mds_exec_och)
1597 ll_md_real_close(inode, FMODE_EXEC);
1598 if (lli->lli_mds_read_och)
1599 ll_md_real_close(inode, FMODE_READ);
1601 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1602 OBD_FREE(lli->lli_symlink_name,
1603 strlen(lli->lli_symlink_name) + 1);
1604 lli->lli_symlink_name = NULL;
1607 ll_xattr_cache_destroy(inode);
1609 #ifdef CONFIG_FS_POSIX_ACL
1610 forget_all_cached_acls(inode);
1611 if (lli->lli_posix_acl) {
1612 posix_acl_release(lli->lli_posix_acl);
1613 lli->lli_posix_acl = NULL;
1616 lli->lli_inode_magic = LLI_INODE_DEAD;
1618 if (S_ISDIR(inode->i_mode))
1619 ll_dir_clear_lsm_md(inode);
1620 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1621 LASSERT(list_empty(&lli->lli_agl_list));
1624 * XXX This has to be done before lsm is freed below, because
1625 * cl_object still uses inode lsm.
1627 cl_inode_fini(inode);
1632 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1634 struct lustre_md md;
1635 struct inode *inode = dentry->d_inode;
1636 struct ll_sb_info *sbi = ll_i2sbi(inode);
1637 struct ptlrpc_request *request = NULL;
1641 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1642 LUSTRE_OPC_ANY, NULL);
1643 if (IS_ERR(op_data))
1644 RETURN(PTR_ERR(op_data));
1646 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1648 ptlrpc_req_finished(request);
1649 if (rc == -ENOENT) {
1651 /* Unlinked special device node? Or just a race?
1652 * Pretend we done everything. */
1653 if (!S_ISREG(inode->i_mode) &&
1654 !S_ISDIR(inode->i_mode)) {
1655 ia_valid = op_data->op_attr.ia_valid;
1656 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1657 rc = simple_setattr(dentry, &op_data->op_attr);
1658 op_data->op_attr.ia_valid = ia_valid;
1660 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1661 CERROR("md_setattr fails: rc = %d\n", rc);
1666 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1667 sbi->ll_md_exp, &md);
1669 ptlrpc_req_finished(request);
1673 ia_valid = op_data->op_attr.ia_valid;
1674 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1675 * cache is not cleared yet. */
1676 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1677 if (S_ISREG(inode->i_mode))
1679 rc = simple_setattr(dentry, &op_data->op_attr);
1680 if (S_ISREG(inode->i_mode))
1681 inode_unlock(inode);
1682 op_data->op_attr.ia_valid = ia_valid;
1684 rc = ll_update_inode(inode, &md);
1685 ptlrpc_req_finished(request);
1690 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1691 * object(s) determine the file size and mtime. Otherwise, the MDS will
1692 * keep these values until such a time that objects are allocated for it.
1693 * We do the MDS operations first, as it is checking permissions for us.
1694 * We don't to the MDS RPC if there is nothing that we want to store there,
1695 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1696 * going to do an RPC anyways.
1698 * If we are doing a truncate, we will send the mtime and ctime updates
1699 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1700 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1703 * In case of HSMimport, we only set attr on MDS.
1705 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr,
1706 enum op_xvalid xvalid, bool hsm_import)
1708 struct inode *inode = dentry->d_inode;
1709 struct ll_inode_info *lli = ll_i2info(inode);
1710 struct md_op_data *op_data = NULL;
1715 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1716 "valid %x, hsm_import %d\n",
1717 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid),
1718 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1721 if (attr->ia_valid & ATTR_SIZE) {
1722 /* Check new size against VFS/VM file size limit and rlimit */
1723 rc = inode_newsize_ok(inode, attr->ia_size);
1727 /* The maximum Lustre file size is variable, based on the
1728 * OST maximum object size and number of stripes. This
1729 * needs another check in addition to the VFS check above. */
1730 if (attr->ia_size > ll_file_maxbytes(inode)) {
1731 CDEBUG(D_INODE,"file "DFID" too large %llu > %llu\n",
1732 PFID(&lli->lli_fid), attr->ia_size,
1733 ll_file_maxbytes(inode));
1737 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1740 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1741 if (attr->ia_valid & TIMES_SET_FLAGS) {
1742 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1743 !cfs_capable(CFS_CAP_FOWNER))
1747 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1748 if (!(xvalid & OP_XVALID_CTIME_SET) &&
1749 (attr->ia_valid & ATTR_CTIME)) {
1750 attr->ia_ctime = current_time(inode);
1751 xvalid |= OP_XVALID_CTIME_SET;
1753 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1754 (attr->ia_valid & ATTR_ATIME)) {
1755 attr->ia_atime = current_time(inode);
1756 attr->ia_valid |= ATTR_ATIME_SET;
1758 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1759 (attr->ia_valid & ATTR_MTIME)) {
1760 attr->ia_mtime = current_time(inode);
1761 attr->ia_valid |= ATTR_MTIME_SET;
1764 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1765 CDEBUG(D_INODE, "setting mtime %lld, ctime %lld, now = %lld\n",
1766 (s64)attr->ia_mtime.tv_sec, (s64)attr->ia_ctime.tv_sec,
1767 ktime_get_real_seconds());
1769 if (S_ISREG(inode->i_mode)) {
1770 if (attr->ia_valid & ATTR_SIZE)
1771 inode_dio_write_done(inode);
1772 inode_unlock(inode);
1775 /* We always do an MDS RPC, even if we're only changing the size;
1776 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1778 OBD_ALLOC_PTR(op_data);
1779 if (op_data == NULL)
1780 GOTO(out, rc = -ENOMEM);
1782 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1783 /* If we are changing file size, file content is
1784 * modified, flag it.
1786 xvalid |= OP_XVALID_OWNEROVERRIDE;
1787 op_data->op_bias |= MDS_DATA_MODIFIED;
1788 ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
1791 if (attr->ia_valid & ATTR_FILE) {
1792 struct ll_file_data *fd = LUSTRE_FPRIVATE(attr->ia_file);
1794 if (fd->fd_lease_och)
1795 op_data->op_bias |= MDS_TRUNC_KEEP_LEASE;
1798 op_data->op_attr = *attr;
1799 op_data->op_xvalid = xvalid;
1801 rc = ll_md_setattr(dentry, op_data);
1805 if (!S_ISREG(inode->i_mode) || hsm_import)
1808 if (attr->ia_valid & (ATTR_SIZE | ATTR_ATIME | ATTR_ATIME_SET |
1809 ATTR_MTIME | ATTR_MTIME_SET | ATTR_CTIME) ||
1810 xvalid & OP_XVALID_CTIME_SET) {
1811 bool cached = false;
1813 rc = pcc_inode_setattr(inode, attr, &cached);
1816 CERROR("%s: PCC inode "DFID" setattr failed: "
1818 ll_i2sbi(inode)->ll_fsname,
1819 PFID(&lli->lli_fid), rc);
1823 /* For truncate and utimes sending attributes to OSTs,
1824 * setting mtime/atime to the past will be performed
1825 * under PW [0:EOF] extent lock (new_size:EOF for
1826 * truncate). It may seem excessive to send mtime/atime
1827 * updates to OSTs when not setting times to past, but
1828 * it is necessary due to possible time
1829 * de-synchronization between MDT inode and OST objects
1831 rc = cl_setattr_ost(lli->lli_clob, attr, xvalid, 0);
1835 /* If the file was restored, it needs to set dirty flag.
1837 * We've already sent MDS_DATA_MODIFIED flag in
1838 * ll_md_setattr() for truncate. However, the MDT refuses to
1839 * set the HS_DIRTY flag on released files, so we have to set
1840 * it again if the file has been restored. Please check how
1841 * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
1843 * Please notice that if the file is not released, the previous
1844 * MDS_DATA_MODIFIED has taken effect and usually
1845 * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
1846 * This way we can save an RPC for common open + trunc
1848 if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
1849 struct hsm_state_set hss = {
1850 .hss_valid = HSS_SETMASK,
1851 .hss_setmask = HS_DIRTY,
1855 rc2 = ll_hsm_state_set(inode, &hss);
1856 /* truncate and write can happen at the same time, so that
1857 * the file can be set modified even though the file is not
1858 * restored from released state, and ll_hsm_state_set() is
1859 * not applicable for the file, and rc2 < 0 is normal in this
1862 CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
1863 PFID(ll_inode2fid(inode)), rc2);
1868 if (op_data != NULL)
1869 ll_finish_md_op_data(op_data);
1871 if (S_ISREG(inode->i_mode)) {
1873 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1874 inode_dio_wait(inode);
1875 /* Once we've got the i_mutex, it's safe to set the S_NOSEC
1876 * flag. ll_update_inode (called from ll_md_setattr), clears
1877 * inode flags, so there is a gap where S_NOSEC is not set.
1878 * This can cause a writer to take the i_mutex unnecessarily,
1879 * but this is safe to do and should be rare. */
1880 inode_has_no_xattr(inode);
1883 ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
1884 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1889 int ll_setattr(struct dentry *de, struct iattr *attr)
1891 int mode = de->d_inode->i_mode;
1892 enum op_xvalid xvalid = 0;
1894 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1895 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1896 xvalid |= OP_XVALID_OWNEROVERRIDE;
1898 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1899 (ATTR_SIZE|ATTR_MODE)) &&
1900 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1901 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1902 !(attr->ia_mode & S_ISGID))))
1903 attr->ia_valid |= ATTR_FORCE;
1905 if ((attr->ia_valid & ATTR_MODE) &&
1907 !(attr->ia_mode & S_ISUID) &&
1908 !(attr->ia_valid & ATTR_KILL_SUID))
1909 attr->ia_valid |= ATTR_KILL_SUID;
1911 if ((attr->ia_valid & ATTR_MODE) &&
1912 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1913 !(attr->ia_mode & S_ISGID) &&
1914 !(attr->ia_valid & ATTR_KILL_SGID))
1915 attr->ia_valid |= ATTR_KILL_SGID;
1917 return ll_setattr_raw(de, attr, xvalid, false);
1920 int ll_statfs_internal(struct ll_sb_info *sbi, struct obd_statfs *osfs,
1923 struct obd_statfs obd_osfs = { 0 };
1928 max_age = ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS;
1930 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1934 osfs->os_type = LL_SUPER_MAGIC;
1936 CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
1937 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree, osfs->os_files);
1939 if (osfs->os_state & OS_STATE_SUM)
1942 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1943 flags |= OBD_STATFS_NODELAY;
1945 rc = obd_statfs(NULL, sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1946 if (rc) /* Possibly a filesystem with no OSTs. Report MDT totals. */
1949 CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
1950 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1953 osfs->os_bsize = obd_osfs.os_bsize;
1954 osfs->os_blocks = obd_osfs.os_blocks;
1955 osfs->os_bfree = obd_osfs.os_bfree;
1956 osfs->os_bavail = obd_osfs.os_bavail;
1958 /* If we have _some_ OSTs, but don't have as many free objects on the
1959 * OSTs as inodes on the MDTs, reduce the reported number of inodes
1960 * to compensate, so that the "inodes in use" number is correct.
1961 * This should be kept in sync with lod_statfs() behaviour.
1963 if (obd_osfs.os_files && obd_osfs.os_ffree < osfs->os_ffree) {
1964 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1966 osfs->os_ffree = obd_osfs.os_ffree;
1972 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1974 struct super_block *sb = de->d_sb;
1975 struct obd_statfs osfs;
1976 __u64 fsid = huge_encode_dev(sb->s_dev);
1979 CDEBUG(D_VFSTRACE, "VFS Op: at %llu jiffies\n", get_jiffies_64());
1980 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1982 /* Some amount of caching on the client is allowed */
1983 rc = ll_statfs_internal(ll_s2sbi(sb), &osfs, OBD_STATFS_SUM);
1987 statfs_unpack(sfs, &osfs);
1989 /* We need to downshift for all 32-bit kernels, because we can't
1990 * tell if the kernel is being called via sys_statfs64() or not.
1991 * Stop before overflowing f_bsize - in which case it is better
1992 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1993 if (sizeof(long) < 8) {
1994 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1997 osfs.os_blocks >>= 1;
1998 osfs.os_bfree >>= 1;
1999 osfs.os_bavail >>= 1;
2003 sfs->f_blocks = osfs.os_blocks;
2004 sfs->f_bfree = osfs.os_bfree;
2005 sfs->f_bavail = osfs.os_bavail;
2006 sfs->f_fsid.val[0] = (__u32)fsid;
2007 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
2011 void ll_inode_size_lock(struct inode *inode)
2013 struct ll_inode_info *lli;
2015 LASSERT(!S_ISDIR(inode->i_mode));
2017 lli = ll_i2info(inode);
2018 mutex_lock(&lli->lli_size_mutex);
2021 void ll_inode_size_unlock(struct inode *inode)
2023 struct ll_inode_info *lli;
2025 lli = ll_i2info(inode);
2026 mutex_unlock(&lli->lli_size_mutex);
2029 void ll_update_inode_flags(struct inode *inode, int ext_flags)
2031 inode->i_flags = ll_ext_to_inode_flags(ext_flags);
2032 if (ext_flags & LUSTRE_PROJINHERIT_FL)
2033 ll_file_set_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT);
2035 ll_file_clear_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT);
2038 int ll_update_inode(struct inode *inode, struct lustre_md *md)
2040 struct ll_inode_info *lli = ll_i2info(inode);
2041 struct mdt_body *body = md->body;
2042 struct ll_sb_info *sbi = ll_i2sbi(inode);
2045 if (body->mbo_valid & OBD_MD_FLEASIZE) {
2046 rc = cl_file_inode_init(inode, md);
2051 if (S_ISDIR(inode->i_mode)) {
2052 rc = ll_update_lsm_md(inode, md);
2057 #ifdef CONFIG_FS_POSIX_ACL
2058 if (body->mbo_valid & OBD_MD_FLACL) {
2059 spin_lock(&lli->lli_lock);
2060 if (lli->lli_posix_acl)
2061 posix_acl_release(lli->lli_posix_acl);
2062 lli->lli_posix_acl = md->posix_acl;
2063 spin_unlock(&lli->lli_lock);
2066 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
2067 sbi->ll_flags & LL_SBI_32BIT_API);
2068 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
2070 if (body->mbo_valid & OBD_MD_FLATIME) {
2071 if (body->mbo_atime > inode->i_atime.tv_sec)
2072 inode->i_atime.tv_sec = body->mbo_atime;
2073 lli->lli_atime = body->mbo_atime;
2076 if (body->mbo_valid & OBD_MD_FLMTIME) {
2077 if (body->mbo_mtime > inode->i_mtime.tv_sec) {
2079 "setting ino %lu mtime from %lld to %llu\n",
2080 inode->i_ino, (s64)inode->i_mtime.tv_sec,
2082 inode->i_mtime.tv_sec = body->mbo_mtime;
2084 lli->lli_mtime = body->mbo_mtime;
2087 if (body->mbo_valid & OBD_MD_FLCTIME) {
2088 if (body->mbo_ctime > inode->i_ctime.tv_sec)
2089 inode->i_ctime.tv_sec = body->mbo_ctime;
2090 lli->lli_ctime = body->mbo_ctime;
2093 /* Clear i_flags to remove S_NOSEC before permissions are updated */
2094 if (body->mbo_valid & OBD_MD_FLFLAGS)
2095 ll_update_inode_flags(inode, body->mbo_flags);
2096 if (body->mbo_valid & OBD_MD_FLMODE)
2097 inode->i_mode = (inode->i_mode & S_IFMT) |
2098 (body->mbo_mode & ~S_IFMT);
2100 if (body->mbo_valid & OBD_MD_FLTYPE)
2101 inode->i_mode = (inode->i_mode & ~S_IFMT) |
2102 (body->mbo_mode & S_IFMT);
2104 LASSERT(inode->i_mode != 0);
2105 if (S_ISREG(inode->i_mode))
2106 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
2107 LL_MAX_BLKSIZE_BITS);
2109 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
2111 if (body->mbo_valid & OBD_MD_FLUID)
2112 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
2113 if (body->mbo_valid & OBD_MD_FLGID)
2114 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
2115 if (body->mbo_valid & OBD_MD_FLPROJID)
2116 lli->lli_projid = body->mbo_projid;
2117 if (body->mbo_valid & OBD_MD_FLNLINK)
2118 set_nlink(inode, body->mbo_nlink);
2119 if (body->mbo_valid & OBD_MD_FLRDEV)
2120 inode->i_rdev = old_decode_dev(body->mbo_rdev);
2122 if (body->mbo_valid & OBD_MD_FLID) {
2123 /* FID shouldn't be changed! */
2124 if (fid_is_sane(&lli->lli_fid)) {
2125 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
2126 "Trying to change FID "DFID
2127 " to the "DFID", inode "DFID"(%p)\n",
2128 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
2129 PFID(ll_inode2fid(inode)), inode);
2131 lli->lli_fid = body->mbo_fid1;
2135 LASSERT(fid_seq(&lli->lli_fid) != 0);
2137 if (body->mbo_valid & OBD_MD_FLSIZE) {
2138 i_size_write(inode, body->mbo_size);
2140 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
2141 PFID(ll_inode2fid(inode)),
2142 (unsigned long long)body->mbo_size);
2144 if (body->mbo_valid & OBD_MD_FLBLOCKS)
2145 inode->i_blocks = body->mbo_blocks;
2148 if (body->mbo_valid & OBD_MD_TSTATE) {
2149 /* Set LLIF_FILE_RESTORING if restore ongoing and
2150 * clear it when done to ensure to start again
2151 * glimpsing updated attrs
2153 if (body->mbo_t_state & MS_RESTORE)
2154 ll_file_set_flag(lli, LLIF_FILE_RESTORING);
2156 ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
2162 int ll_read_inode2(struct inode *inode, void *opaque)
2164 struct lustre_md *md = opaque;
2165 struct ll_inode_info *lli = ll_i2info(inode);
2169 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2170 PFID(&lli->lli_fid), inode);
2172 /* Core attributes from the MDS first. This is a new inode, and
2173 * the VFS doesn't zero times in the core inode so we have to do
2174 * it ourselves. They will be overwritten by either MDS or OST
2175 * attributes - we just need to make sure they aren't newer.
2177 inode->i_mtime.tv_sec = 0;
2178 inode->i_atime.tv_sec = 0;
2179 inode->i_ctime.tv_sec = 0;
2181 rc = ll_update_inode(inode, md);
2185 /* OIDEBUG(inode); */
2187 #ifdef HAVE_BACKING_DEV_INFO
2188 /* initializing backing dev info. */
2189 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2191 if (S_ISREG(inode->i_mode)) {
2192 struct ll_sb_info *sbi = ll_i2sbi(inode);
2193 inode->i_op = &ll_file_inode_operations;
2194 inode->i_fop = sbi->ll_fop;
2195 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2197 } else if (S_ISDIR(inode->i_mode)) {
2198 inode->i_op = &ll_dir_inode_operations;
2199 inode->i_fop = &ll_dir_operations;
2201 } else if (S_ISLNK(inode->i_mode)) {
2202 inode->i_op = &ll_fast_symlink_inode_operations;
2205 inode->i_op = &ll_special_inode_operations;
2207 init_special_inode(inode, inode->i_mode,
2216 void ll_delete_inode(struct inode *inode)
2218 struct ll_inode_info *lli = ll_i2info(inode);
2219 struct address_space *mapping = &inode->i_data;
2220 unsigned long nrpages;
2223 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL) {
2224 /* It is last chance to write out dirty pages,
2225 * otherwise we may lose data while umount.
2227 * If i_nlink is 0 then just discard data. This is safe because
2228 * local inode gets i_nlink 0 from server only for the last
2229 * unlink, so that file is not opened somewhere else
2231 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, inode->i_nlink ?
2232 CL_FSYNC_LOCAL : CL_FSYNC_DISCARD, 1);
2234 truncate_inode_pages_final(mapping);
2236 /* Workaround for LU-118: Note nrpages may not be totally updated when
2237 * truncate_inode_pages() returns, as there can be a page in the process
2238 * of deletion (inside __delete_from_page_cache()) in the specified
2239 * range. Thus mapping->nrpages can be non-zero when this function
2240 * returns even after truncation of the whole mapping. Only do this if
2241 * npages isn't already zero.
2243 nrpages = mapping->nrpages;
2245 xa_lock_irq(&mapping->i_pages);
2246 nrpages = mapping->nrpages;
2247 xa_unlock_irq(&mapping->i_pages);
2248 } /* Workaround end */
2250 LASSERTF(nrpages == 0, "%s: inode="DFID"(%p) nrpages=%lu, "
2251 "see https://jira.whamcloud.com/browse/LU-118\n",
2252 ll_i2sbi(inode)->ll_fsname,
2253 PFID(ll_inode2fid(inode)), inode, nrpages);
2255 #ifdef HAVE_SBOPS_EVICT_INODE
2256 ll_clear_inode(inode);
2263 int ll_iocontrol(struct inode *inode, struct file *file,
2264 unsigned int cmd, unsigned long arg)
2266 struct ll_sb_info *sbi = ll_i2sbi(inode);
2267 struct ptlrpc_request *req = NULL;
2272 case FS_IOC_GETFLAGS: {
2273 struct mdt_body *body;
2274 struct md_op_data *op_data;
2276 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2277 0, 0, LUSTRE_OPC_ANY,
2279 if (IS_ERR(op_data))
2280 RETURN(PTR_ERR(op_data));
2282 op_data->op_valid = OBD_MD_FLFLAGS;
2283 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2284 ll_finish_md_op_data(op_data);
2286 CERROR("%s: failure inode "DFID": rc = %d\n",
2287 sbi->ll_md_exp->exp_obd->obd_name,
2288 PFID(ll_inode2fid(inode)), rc);
2292 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2294 flags = body->mbo_flags;
2296 ptlrpc_req_finished(req);
2298 RETURN(put_user(flags, (int __user *)arg));
2300 case FS_IOC_SETFLAGS: {
2302 struct md_op_data *op_data;
2303 struct cl_object *obj;
2304 struct fsxattr fa = { 0 };
2306 if (get_user(flags, (int __user *)arg))
2309 fa.fsx_projid = ll_i2info(inode)->lli_projid;
2310 if (flags & LUSTRE_PROJINHERIT_FL)
2311 fa.fsx_xflags = FS_XFLAG_PROJINHERIT;
2313 rc = ll_ioctl_check_project(inode, &fa);
2317 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2318 LUSTRE_OPC_ANY, NULL);
2319 if (IS_ERR(op_data))
2320 RETURN(PTR_ERR(op_data));
2322 op_data->op_attr_flags = flags;
2323 op_data->op_xvalid |= OP_XVALID_FLAGS;
2324 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2325 ll_finish_md_op_data(op_data);
2326 ptlrpc_req_finished(req);
2330 ll_update_inode_flags(inode, flags);
2332 obj = ll_i2info(inode)->lli_clob;
2336 OBD_ALLOC_PTR(attr);
2340 rc = cl_setattr_ost(obj, attr, OP_XVALID_FLAGS, flags);
2352 int ll_flush_ctx(struct inode *inode)
2354 struct ll_sb_info *sbi = ll_i2sbi(inode);
2356 CDEBUG(D_SEC, "flush context for user %d\n",
2357 from_kuid(&init_user_ns, current_uid()));
2359 obd_set_info_async(NULL, sbi->ll_md_exp,
2360 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2362 obd_set_info_async(NULL, sbi->ll_dt_exp,
2363 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2368 /* umount -f client means force down, don't save state */
2369 void ll_umount_begin(struct super_block *sb)
2371 struct ll_sb_info *sbi = ll_s2sbi(sb);
2372 struct obd_device *obd;
2373 struct obd_ioctl_data *ioc_data;
2374 struct l_wait_info lwi;
2375 wait_queue_head_t waitq;
2378 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2379 sb->s_count, atomic_read(&sb->s_active));
2381 obd = class_exp2obd(sbi->ll_md_exp);
2383 CERROR("Invalid MDC connection handle %#llx\n",
2384 sbi->ll_md_exp->exp_handle.h_cookie);
2390 obd = class_exp2obd(sbi->ll_dt_exp);
2392 CERROR("Invalid LOV connection handle %#llx\n",
2393 sbi->ll_dt_exp->exp_handle.h_cookie);
2399 OBD_ALLOC_PTR(ioc_data);
2401 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2402 sizeof *ioc_data, ioc_data, NULL);
2404 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2405 sizeof *ioc_data, ioc_data, NULL);
2407 OBD_FREE_PTR(ioc_data);
2410 /* Really, we'd like to wait until there are no requests outstanding,
2411 * and then continue. For now, we just periodically checking for vfs
2412 * to decrement mnt_cnt and hope to finish it within 10sec.
2414 init_waitqueue_head(&waitq);
2415 lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(10),
2416 cfs_time_seconds(1), NULL, NULL);
2417 l_wait_event(waitq, may_umount(sbi->ll_mnt.mnt), &lwi);
2422 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2424 struct ll_sb_info *sbi = ll_s2sbi(sb);
2425 char *profilenm = get_profile_name(sb);
2429 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2430 read_only = *flags & MS_RDONLY;
2431 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2432 sizeof(KEY_READ_ONLY),
2433 KEY_READ_ONLY, sizeof(read_only),
2436 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2437 profilenm, read_only ?
2438 "read-only" : "read-write", err);
2443 sb->s_flags |= MS_RDONLY;
2445 sb->s_flags &= ~MS_RDONLY;
2447 if (sbi->ll_flags & LL_SBI_VERBOSE)
2448 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2449 read_only ? "read-only" : "read-write");
2455 * Cleanup the open handle that is cached on MDT-side.
2457 * For open case, the client side open handling thread may hit error
2458 * after the MDT grant the open. Under such case, the client should
2459 * send close RPC to the MDT as cleanup; otherwise, the open handle
2460 * on the MDT will be leaked there until the client umount or evicted.
2462 * In further, if someone unlinked the file, because the open handle
2463 * holds the reference on such file/object, then it will block the
2464 * subsequent threads that want to locate such object via FID.
2466 * \param[in] sb super block for this file-system
2467 * \param[in] open_req pointer to the original open request
2469 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
2471 struct mdt_body *body;
2472 struct md_op_data *op_data;
2473 struct ptlrpc_request *close_req = NULL;
2474 struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
2477 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
2478 OBD_ALLOC_PTR(op_data);
2479 if (op_data == NULL) {
2480 CWARN("%s: cannot allocate op_data to release open handle for "
2481 DFID"\n", ll_s2sbi(sb)->ll_fsname, PFID(&body->mbo_fid1));
2486 op_data->op_fid1 = body->mbo_fid1;
2487 op_data->op_open_handle = body->mbo_open_handle;
2488 op_data->op_mod_time = ktime_get_real_seconds();
2489 md_close(exp, op_data, NULL, &close_req);
2490 ptlrpc_req_finished(close_req);
2491 ll_finish_md_op_data(op_data);
2496 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2497 struct super_block *sb, struct lookup_intent *it)
2499 struct ll_sb_info *sbi = NULL;
2500 struct lustre_md md = { NULL };
2501 bool default_lmv_deleted = false;
2506 LASSERT(*inode || sb);
2507 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2508 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2509 sbi->ll_md_exp, &md);
2514 * clear default_lmv only if intent_getattr reply doesn't contain it.
2515 * but it needs to be done after iget, check this early because
2516 * ll_update_lsm_md() may change md.
2518 if (it && (it->it_op & (IT_LOOKUP | IT_GETATTR)) &&
2519 S_ISDIR(md.body->mbo_mode) && !md.default_lmv)
2520 default_lmv_deleted = true;
2523 rc = ll_update_inode(*inode, &md);
2527 LASSERT(sb != NULL);
2530 * At this point server returns to client's same fid as client
2531 * generated for creating. So using ->fid1 is okay here.
2533 if (!fid_is_sane(&md.body->mbo_fid1)) {
2534 CERROR("%s: Fid is insane "DFID"\n",
2536 PFID(&md.body->mbo_fid1));
2537 GOTO(out, rc = -EINVAL);
2540 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2541 sbi->ll_flags & LL_SBI_32BIT_API),
2543 if (IS_ERR(*inode)) {
2544 #ifdef CONFIG_FS_POSIX_ACL
2546 posix_acl_release(md.posix_acl);
2547 md.posix_acl = NULL;
2550 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2552 CERROR("new_inode -fatal: rc %d\n", rc);
2557 /* Handling piggyback layout lock.
2558 * Layout lock can be piggybacked by getattr and open request.
2559 * The lsm can be applied to inode only if it comes with a layout lock
2560 * otherwise correct layout may be overwritten, for example:
2561 * 1. proc1: mdt returns a lsm but not granting layout
2562 * 2. layout was changed by another client
2563 * 3. proc2: refresh layout and layout lock granted
2564 * 4. proc1: to apply a stale layout */
2565 if (it != NULL && it->it_lock_mode != 0) {
2566 struct lustre_handle lockh;
2567 struct ldlm_lock *lock;
2569 lockh.cookie = it->it_lock_handle;
2570 lock = ldlm_handle2lock(&lockh);
2571 LASSERT(lock != NULL);
2572 if (ldlm_has_layout(lock)) {
2573 struct cl_object_conf conf;
2575 memset(&conf, 0, sizeof(conf));
2576 conf.coc_opc = OBJECT_CONF_SET;
2577 conf.coc_inode = *inode;
2578 conf.coc_lock = lock;
2579 conf.u.coc_layout = md.layout;
2580 (void)ll_layout_conf(*inode, &conf);
2582 LDLM_LOCK_PUT(lock);
2585 if (default_lmv_deleted)
2586 ll_update_default_lsm_md(*inode, &md);
2591 /* cleanup will be done if necessary */
2592 md_free_lustre_md(sbi->ll_md_exp, &md);
2594 if (rc != 0 && it != NULL && it->it_op & IT_OPEN)
2595 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2600 int ll_obd_statfs(struct inode *inode, void __user *arg)
2602 struct ll_sb_info *sbi = NULL;
2603 struct obd_export *exp;
2605 struct obd_ioctl_data *data = NULL;
2609 if (!inode || !(sbi = ll_i2sbi(inode)))
2610 GOTO(out_statfs, rc = -EINVAL);
2612 rc = obd_ioctl_getdata(&buf, &len, arg);
2614 GOTO(out_statfs, rc);
2617 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2618 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2619 GOTO(out_statfs, rc = -EINVAL);
2621 if (data->ioc_inllen1 != sizeof(__u32) ||
2622 data->ioc_inllen2 != sizeof(__u32) ||
2623 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2624 data->ioc_plen2 != sizeof(struct obd_uuid))
2625 GOTO(out_statfs, rc = -EINVAL);
2627 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2628 if (type & LL_STATFS_LMV)
2629 exp = sbi->ll_md_exp;
2630 else if (type & LL_STATFS_LOV)
2631 exp = sbi->ll_dt_exp;
2633 GOTO(out_statfs, rc = -ENODEV);
2635 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2637 GOTO(out_statfs, rc);
2639 OBD_FREE_LARGE(buf, len);
2644 * this is normally called in ll_fini_md_op_data(), but sometimes it needs to
2645 * be called early to avoid deadlock.
2647 void ll_unlock_md_op_lsm(struct md_op_data *op_data)
2649 if (op_data->op_mea2_sem) {
2650 up_read(op_data->op_mea2_sem);
2651 op_data->op_mea2_sem = NULL;
2654 if (op_data->op_mea1_sem) {
2655 up_read(op_data->op_mea1_sem);
2656 op_data->op_mea1_sem = NULL;
2660 /* this function prepares md_op_data hint for passing it down to MD stack. */
2661 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
2662 struct inode *i1, struct inode *i2,
2663 const char *name, size_t namelen,
2664 __u32 mode, enum md_op_code opc,
2667 LASSERT(i1 != NULL);
2670 /* Do not reuse namelen for something else. */
2672 return ERR_PTR(-EINVAL);
2674 if (namelen > ll_i2sbi(i1)->ll_namelen)
2675 return ERR_PTR(-ENAMETOOLONG);
2677 if (!lu_name_is_valid_2(name, namelen))
2678 return ERR_PTR(-EINVAL);
2681 if (op_data == NULL)
2682 OBD_ALLOC_PTR(op_data);
2684 if (op_data == NULL)
2685 return ERR_PTR(-ENOMEM);
2687 ll_i2gids(op_data->op_suppgids, i1, i2);
2688 op_data->op_fid1 = *ll_inode2fid(i1);
2689 op_data->op_code = opc;
2691 if (S_ISDIR(i1->i_mode)) {
2692 down_read(&ll_i2info(i1)->lli_lsm_sem);
2693 op_data->op_mea1_sem = &ll_i2info(i1)->lli_lsm_sem;
2694 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2695 op_data->op_default_mea1 = ll_i2info(i1)->lli_default_lsm_md;
2699 op_data->op_fid2 = *ll_inode2fid(i2);
2700 if (S_ISDIR(i2->i_mode)) {
2702 down_read(&ll_i2info(i2)->lli_lsm_sem);
2703 op_data->op_mea2_sem =
2704 &ll_i2info(i2)->lli_lsm_sem;
2706 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2709 fid_zero(&op_data->op_fid2);
2712 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2713 op_data->op_cli_flags |= CLI_HASH64;
2715 if (ll_need_32bit_api(ll_i2sbi(i1)))
2716 op_data->op_cli_flags |= CLI_API32;
2718 op_data->op_name = name;
2719 op_data->op_namelen = namelen;
2720 op_data->op_mode = mode;
2721 op_data->op_mod_time = ktime_get_real_seconds();
2722 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2723 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2724 op_data->op_cap = cfs_curproc_cap_pack();
2725 op_data->op_mds = 0;
2726 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2727 filename_is_volatile(name, namelen, &op_data->op_mds)) {
2728 op_data->op_bias |= MDS_CREATE_VOLATILE;
2730 op_data->op_data = data;
2735 void ll_finish_md_op_data(struct md_op_data *op_data)
2737 ll_unlock_md_op_lsm(op_data);
2738 security_release_secctx(op_data->op_file_secctx,
2739 op_data->op_file_secctx_size);
2740 OBD_FREE_PTR(op_data);
2743 #ifdef HAVE_SUPEROPS_USE_DENTRY
2744 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2746 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2749 struct ll_sb_info *sbi;
2751 #ifdef HAVE_SUPEROPS_USE_DENTRY
2752 LASSERT((seq != NULL) && (dentry != NULL));
2753 sbi = ll_s2sbi(dentry->d_sb);
2755 LASSERT((seq != NULL) && (vfs != NULL));
2756 sbi = ll_s2sbi(vfs->mnt_sb);
2759 if (sbi->ll_flags & LL_SBI_NOLCK)
2760 seq_puts(seq, ",nolock");
2762 if (sbi->ll_flags & LL_SBI_FLOCK)
2763 seq_puts(seq, ",flock");
2765 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2766 seq_puts(seq, ",localflock");
2768 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2769 seq_puts(seq, ",user_xattr");
2771 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2772 seq_puts(seq, ",lazystatfs");
2774 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2775 seq_puts(seq, ",user_fid2path");
2777 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
2778 seq_puts(seq, ",always_ping");
2784 * Get obd name by cmd, and copy out to user space
2786 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2788 struct ll_sb_info *sbi = ll_i2sbi(inode);
2789 struct obd_device *obd;
2792 if (cmd == OBD_IOC_GETDTNAME)
2793 obd = class_exp2obd(sbi->ll_dt_exp);
2794 else if (cmd == OBD_IOC_GETMDNAME)
2795 obd = class_exp2obd(sbi->ll_md_exp);
2802 if (copy_to_user((void __user *)arg, obd->obd_name,
2803 strlen(obd->obd_name) + 1))
2809 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2816 p.mnt = current->fs->root.mnt;
2818 path = d_path(&p, buf, bufsize);
2823 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2825 char *buf, *path = NULL;
2826 struct dentry *dentry = NULL;
2827 struct inode *inode = page->mapping->host;
2829 /* this can be called inside spin lock so use GFP_ATOMIC. */
2830 buf = (char *)__get_free_page(GFP_ATOMIC);
2832 dentry = d_find_alias(page->mapping->host);
2834 path = ll_d_path(dentry, buf, PAGE_SIZE);
2838 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2839 "(rc %d)\n", ll_i2sbi(inode)->ll_fsname,
2840 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2841 PFID(ll_inode2fid(inode)),
2842 (path && !IS_ERR(path)) ? path : "", ioret);
2848 free_page((unsigned long)buf);
2851 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
2852 struct lov_user_md **kbuf)
2854 struct lov_user_md lum;
2858 if (copy_from_user(&lum, md, sizeof(lum)))
2861 lum_size = ll_lov_user_md_size(&lum);
2865 OBD_ALLOC(*kbuf, lum_size);
2869 if (copy_from_user(*kbuf, md, lum_size) != 0) {
2870 OBD_FREE(*kbuf, lum_size);
2878 * Compute llite root squash state after a change of root squash
2879 * configuration setting or add/remove of a lnet nid
2881 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2883 struct root_squash_info *squash = &sbi->ll_squash;
2886 struct lnet_process_id id;
2888 /* Update norootsquash flag */
2889 down_write(&squash->rsi_sem);
2890 if (list_empty(&squash->rsi_nosquash_nids))
2891 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2893 /* Do not apply root squash as soon as one of our NIDs is
2894 * in the nosquash_nids list */
2897 while (LNetGetId(i++, &id) != -ENOENT) {
2898 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2900 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2906 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2908 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2910 up_write(&squash->rsi_sem);
2914 * Parse linkea content to extract information about a given hardlink
2916 * \param[in] ldata - Initialized linkea data
2917 * \param[in] linkno - Link identifier
2918 * \param[out] parent_fid - The entry's parent FID
2919 * \param[out] ln - Entry name destination buffer
2921 * \retval 0 on success
2922 * \retval Appropriate negative error code on failure
2924 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
2925 struct lu_fid *parent_fid, struct lu_name *ln)
2931 rc = linkea_init_with_rec(ldata);
2935 if (linkno >= ldata->ld_leh->leh_reccount)
2936 /* beyond last link */
2939 linkea_first_entry(ldata);
2940 for (idx = 0; ldata->ld_lee != NULL; idx++) {
2941 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
2946 linkea_next_entry(ldata);
2956 * Get parent FID and name of an identified link. Operation is performed for
2957 * a given link number, letting the caller iterate over linkno to list one or
2958 * all links of an entry.
2960 * \param[in] file - File descriptor against which to perform the operation
2961 * \param[in,out] arg - User-filled structure containing the linkno to operate
2962 * on and the available size. It is eventually filled with
2963 * the requested information or left untouched on error
2965 * \retval - 0 on success
2966 * \retval - Appropriate negative error code on failure
2968 int ll_getparent(struct file *file, struct getparent __user *arg)
2970 struct inode *inode = file_inode(file);
2971 struct linkea_data *ldata;
2972 struct lu_buf buf = LU_BUF_NULL;
2974 struct lu_fid parent_fid;
2981 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
2982 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
2985 if (get_user(name_size, &arg->gp_name_size))
2988 if (get_user(linkno, &arg->gp_linkno))
2991 if (name_size > PATH_MAX)
2994 OBD_ALLOC(ldata, sizeof(*ldata));
2998 rc = linkea_data_new(ldata, &buf);
3000 GOTO(ldata_free, rc);
3002 #ifdef HAVE_XATTR_HANDLER_FLAGS
3003 rc = ll_xattr_list(inode, XATTR_NAME_LINK, XATTR_TRUSTED_T, buf.lb_buf,
3004 buf.lb_len, OBD_MD_FLXATTR);
3006 rc = ll_getxattr(file_dentry(file), XATTR_NAME_LINK, buf.lb_buf,
3008 #endif /* HAVE_XATTR_HANDLER_FLAGS */
3012 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
3016 if (ln.ln_namelen >= name_size)
3017 GOTO(lb_free, rc = -EOVERFLOW);
3019 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
3020 GOTO(lb_free, rc = -EFAULT);
3022 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
3023 GOTO(lb_free, rc = -EFAULT);
3025 if (put_user('\0', arg->gp_name + ln.ln_namelen))
3026 GOTO(lb_free, rc = -EFAULT);
3031 OBD_FREE(ldata, sizeof(*ldata));