1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/llite/llite_lib.c
38 * Lustre Light Super operations
41 #define DEBUG_SUBSYSTEM S_LLITE
43 #include <linux/module.h>
44 #include <linux/types.h>
45 #include <linux/random.h>
46 #include <linux/version.h>
49 #include <lustre_lite.h>
50 #include <lustre_ha.h>
51 #include <lustre_dlm.h>
52 #include <lprocfs_status.h>
53 #include <lustre_disk.h>
54 #include <lustre_param.h>
55 #include <lustre_log.h>
56 #include <cl_object.h>
57 #include <obd_cksum.h>
58 #include "llite_internal.h"
60 cfs_mem_cache_t *ll_file_data_slab;
62 CFS_LIST_HEAD(ll_super_blocks);
63 cfs_spinlock_t ll_sb_lock = CFS_SPIN_LOCK_UNLOCKED;
65 extern struct address_space_operations ll_aops;
66 extern struct address_space_operations ll_dir_aops;
69 #define log2(n) cfs_ffz(~(n))
72 static struct ll_sb_info *ll_init_sbi(void)
74 struct ll_sb_info *sbi = NULL;
81 OBD_ALLOC(sbi, sizeof(*sbi));
85 cfs_spin_lock_init(&sbi->ll_lock);
86 cfs_init_mutex(&sbi->ll_lco.lco_lock);
87 cfs_spin_lock_init(&sbi->ll_pp_extent_lock);
88 cfs_spin_lock_init(&sbi->ll_process_lock);
89 sbi->ll_rw_stats_on = 0;
92 pages = si.totalram - si.totalhigh;
93 if (pages >> (20 - CFS_PAGE_SHIFT) < 512) {
94 #ifdef HAVE_BGL_SUPPORT
95 sbi->ll_async_page_max = pages / 4;
97 sbi->ll_async_page_max = pages / 2;
100 sbi->ll_async_page_max = (pages / 4) * 3;
103 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
104 SBI_DEFAULT_READAHEAD_MAX);
105 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
106 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
107 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
108 CFS_INIT_LIST_HEAD(&sbi->ll_conn_chain);
109 CFS_INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
111 ll_generate_random_uuid(uuid);
112 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
113 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
115 cfs_spin_lock(&ll_sb_lock);
116 cfs_list_add_tail(&sbi->ll_list, &ll_super_blocks);
117 cfs_spin_unlock(&ll_sb_lock);
119 #ifdef ENABLE_LLITE_CHECKSUM
120 sbi->ll_flags |= LL_SBI_CHECKSUM;
123 #ifdef HAVE_LRU_RESIZE_SUPPORT
124 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
127 #ifdef HAVE_EXPORT___IGET
128 CFS_INIT_LIST_HEAD(&sbi->ll_deathrow);
129 cfs_spin_lock_init(&sbi->ll_deathrow_lock);
131 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
132 cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
134 cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
138 /* metadata statahead is enabled by default */
139 sbi->ll_sa_max = LL_SA_RPC_DEF;
144 void ll_free_sbi(struct super_block *sb)
146 struct ll_sb_info *sbi = ll_s2sbi(sb);
150 cfs_spin_lock(&ll_sb_lock);
151 cfs_list_del(&sbi->ll_list);
152 cfs_spin_unlock(&ll_sb_lock);
153 OBD_FREE(sbi, sizeof(*sbi));
158 static struct dentry_operations ll_d_root_ops = {
159 .d_compare = ll_dcompare,
160 .d_revalidate = ll_revalidate_nd,
163 static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
165 struct inode *root = 0;
166 struct ll_sb_info *sbi = ll_s2sbi(sb);
167 struct obd_device *obd;
168 struct obd_capa *oc = NULL;
169 struct obd_statfs osfs;
170 struct ptlrpc_request *request = NULL;
171 struct obd_connect_data *data = NULL;
172 struct obd_uuid *uuid;
173 struct lustre_md lmd;
175 int size, err, checksum;
178 obd = class_name2obd(md);
180 CERROR("MD %s: not setup or attached\n", md);
188 if (proc_lustre_fs_root) {
189 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
192 CERROR("could not register mount in /proc/fs/lustre\n");
195 /* indicate the features supported by this client */
196 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
197 OBD_CONNECT_JOIN | OBD_CONNECT_ATTRFID |
198 OBD_CONNECT_VERSION | OBD_CONNECT_MDS_CAPA |
199 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_CANCELSET|
200 OBD_CONNECT_FID | OBD_CONNECT_AT |
201 OBD_CONNECT_LOV_V3 | OBD_CONNECT_RMT_CLIENT |
202 OBD_CONNECT_VBR | OBD_CONNECT_SOM;
204 #ifdef HAVE_LRU_RESIZE_SUPPORT
205 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
206 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
208 #ifdef CONFIG_FS_POSIX_ACL
209 data->ocd_connect_flags |= OBD_CONNECT_ACL;
211 data->ocd_ibits_known = MDS_INODELOCK_FULL;
212 data->ocd_version = LUSTRE_VERSION_CODE;
214 if (sb->s_flags & MS_RDONLY)
215 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
216 if (sbi->ll_flags & LL_SBI_USER_XATTR)
217 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
219 #ifdef HAVE_MS_FLOCK_LOCK
220 /* force vfs to use lustre handler for flock() calls - bug 10743 */
221 sb->s_flags |= MS_FLOCK_LOCK;
224 if (sbi->ll_flags & LL_SBI_FLOCK)
225 sbi->ll_fop = &ll_file_operations_flock;
226 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
227 sbi->ll_fop = &ll_file_operations;
229 sbi->ll_fop = &ll_file_operations_noflock;
232 data->ocd_connect_flags |= OBD_CONNECT_REAL;
233 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
234 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
236 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
238 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
239 "recovery, of which this client is not a "
240 "part. Please wait for recovery to complete,"
241 " abort, or time out.\n", md);
244 CERROR("cannot connect to %s: rc = %d\n", md, err);
248 err = obd_fid_init(sbi->ll_md_exp);
250 CERROR("Can't init metadata layer FID infrastructure, "
255 err = obd_statfs(obd, &osfs, cfs_time_current_64() - CFS_HZ, 0);
257 GOTO(out_md_fid, err);
259 size = sizeof(*data);
260 err = obd_get_info(sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
261 KEY_CONN_DATA, &size, data, NULL);
263 CERROR("Get connect data failed: %d \n", err);
267 LASSERT(osfs.os_bsize);
268 sb->s_blocksize = osfs.os_bsize;
269 sb->s_blocksize_bits = log2(osfs.os_bsize);
270 sb->s_magic = LL_SUPER_MAGIC;
272 /* for bug 11559. in $LINUX/fs/read_write.c, function do_sendfile():
273 * retval = in_file->f_op->sendfile(...);
275 * retval = -EOVERFLOW;
277 * it will check if *ppos is greater than max. However, max equals to
278 * s_maxbytes, which is a negative integer in a x86_64 box since loff_t
279 * has been defined as a signed long long integer in linux kernel. */
280 #if BITS_PER_LONG == 64
281 sb->s_maxbytes = PAGE_CACHE_MAXBYTES >> 1;
283 sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
285 sbi->ll_namelen = osfs.os_namelen;
286 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
288 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
289 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
290 LCONSOLE_INFO("Disabling user_xattr feature because "
291 "it is not supported on the server\n");
292 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
295 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
297 sb->s_flags |= MS_POSIXACL;
299 sbi->ll_flags |= LL_SBI_ACL;
301 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
303 sb->s_flags &= ~MS_POSIXACL;
305 sbi->ll_flags &= ~LL_SBI_ACL;
308 if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
309 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
310 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
311 LCONSOLE_INFO("client is set as remote by default.\n");
314 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
315 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
316 LCONSOLE_INFO("client claims to be remote, but server "
317 "rejected, forced to be local.\n");
321 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
322 LCONSOLE_INFO("client enabled MDS capability!\n");
323 sbi->ll_flags |= LL_SBI_MDS_CAPA;
326 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
327 LCONSOLE_INFO("client enabled OSS capability!\n");
328 sbi->ll_flags |= LL_SBI_OSS_CAPA;
331 obd = class_name2obd(dt);
333 CERROR("DT %s: not setup or attached\n", dt);
334 GOTO(out_md_fid, err = -ENODEV);
337 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
338 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
339 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
340 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
341 OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
342 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
345 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
346 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
347 * disabled by default, because it can still be enabled on the
348 * fly via /proc. As a consequence, we still need to come to an
349 * agreement on the supported algorithms at connect time */
350 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
352 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
353 data->ocd_cksum_types = OBD_CKSUM_ADLER;
355 /* send the list of supported checksum types */
356 data->ocd_cksum_types = OBD_CKSUM_ALL;
359 #ifdef HAVE_LRU_RESIZE_SUPPORT
360 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
362 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
363 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
365 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
366 "ocd_grant: %d\n", data->ocd_connect_flags,
367 data->ocd_version, data->ocd_grant);
369 obd->obd_upcall.onu_owner = &sbi->ll_lco;
370 obd->obd_upcall.onu_upcall = cl_ocd_update;
371 data->ocd_brw_size = PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT;
373 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data, NULL);
375 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
376 "recovery, of which this client is not a "
377 "part. Please wait for recovery to "
378 "complete, abort, or time out.\n", dt);
379 GOTO(out_md_fid, err);
381 CERROR("Cannot connect to %s: rc = %d\n", dt, err);
382 GOTO(out_md_fid, err);
385 err = obd_fid_init(sbi->ll_dt_exp);
387 CERROR("Can't init data layer FID infrastructure, "
392 cfs_mutex_down(&sbi->ll_lco.lco_lock);
393 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
394 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
395 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
396 cfs_mutex_up(&sbi->ll_lco.lco_lock);
398 fid_zero(&sbi->ll_root_fid);
399 err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
401 CERROR("cannot mds_connect: rc = %d\n", err);
402 GOTO(out_lock_cn_cb, err);
404 if (!fid_is_sane(&sbi->ll_root_fid)) {
405 CERROR("Invalid root fid during mount\n");
406 GOTO(out_lock_cn_cb, err = -EINVAL);
408 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
410 sb->s_op = &lustre_super_operations;
411 sb->s_export_op = &lustre_export_operations;
414 * XXX: move this to after cbd setup? */
415 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
416 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
417 valid |= OBD_MD_FLRMTPERM;
418 else if (sbi->ll_flags & LL_SBI_ACL)
419 valid |= OBD_MD_FLACL;
421 err = md_getattr(sbi->ll_md_exp, &sbi->ll_root_fid, oc, valid, 0,
426 CERROR("md_getattr failed for root: rc = %d\n", err);
427 GOTO(out_lock_cn_cb, err);
429 memset(&lmd, 0, sizeof(lmd));
430 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
431 sbi->ll_md_exp, &lmd);
433 CERROR("failed to understand root inode md: rc = %d\n", err);
434 ptlrpc_req_finished (request);
435 GOTO(out_lock_cn_cb, err);
438 LASSERT(fid_is_sane(&sbi->ll_root_fid));
439 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid), &lmd);
440 md_free_lustre_md(sbi->ll_md_exp, &lmd);
441 ptlrpc_req_finished(request);
443 if (root == NULL || IS_ERR(root)) {
445 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
446 #ifdef CONFIG_FS_POSIX_ACL
448 posix_acl_release(lmd.posix_acl);
449 lmd.posix_acl = NULL;
452 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
454 CERROR("lustre_lite: bad iget4 for root\n");
458 err = ll_close_thread_start(&sbi->ll_lcq);
460 CERROR("cannot start close thread: rc %d\n", err);
464 #ifdef CONFIG_FS_POSIX_ACL
465 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
466 rct_init(&sbi->ll_rct);
467 et_init(&sbi->ll_et);
471 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
472 err = obd_set_info_async(sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
473 KEY_CHECKSUM, sizeof(checksum), &checksum,
477 sb->s_root = d_alloc_root(root);
479 OBD_FREE(data, sizeof(*data));
481 sb->s_root->d_op = &ll_d_root_ops;
483 sbi->ll_sdev_orig = sb->s_dev;
485 /* We set sb->s_dev equal on all lustre clients in order to support
486 * NFS export clustering. NFSD requires that the FSID be the same
488 /* s_dev is also used in lt_compare() to compare two fs, but that is
489 * only a node-local comparison. */
490 uuid = obd_get_uuid(sbi->ll_md_exp);
492 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
499 obd_fid_fini(sbi->ll_dt_exp);
501 obd_disconnect(sbi->ll_dt_exp);
502 sbi->ll_dt_exp = NULL;
504 obd_fid_fini(sbi->ll_md_exp);
506 obd_disconnect(sbi->ll_md_exp);
507 sbi->ll_md_exp = NULL;
511 lprocfs_unregister_mountpoint(sbi);
515 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
519 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
521 rc = obd_get_info(sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
522 KEY_MAX_EASIZE, &size, lmmsize, NULL);
524 CERROR("Get max mdsize error rc %d \n", rc);
529 void ll_dump_inode(struct inode *inode)
531 struct list_head *tmp;
532 int dentry_count = 0;
534 LASSERT(inode != NULL);
536 list_for_each(tmp, &inode->i_dentry)
539 CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
540 inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
541 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
544 void lustre_dump_dentry(struct dentry *dentry, int recur)
546 struct list_head *tmp;
549 LASSERT(dentry != NULL);
551 list_for_each(tmp, &dentry->d_subdirs)
554 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
555 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
556 dentry->d_name.len, dentry->d_name.name,
557 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
558 dentry->d_parent, dentry->d_inode, atomic_read(&dentry->d_count),
559 dentry->d_flags, dentry->d_fsdata, subdirs);
560 if (dentry->d_inode != NULL)
561 ll_dump_inode(dentry->d_inode);
566 list_for_each(tmp, &dentry->d_subdirs) {
567 struct dentry *d = list_entry(tmp, struct dentry, d_child);
568 lustre_dump_dentry(d, recur - 1);
572 #ifdef HAVE_EXPORT___IGET
573 static void prune_dir_dentries(struct inode *inode)
575 struct dentry *dentry, *prev = NULL;
577 /* due to lustre specific logic, a directory
578 * can have few dentries - a bug from VFS POV */
580 spin_lock(&dcache_lock);
581 if (!list_empty(&inode->i_dentry)) {
582 dentry = list_entry(inode->i_dentry.prev,
583 struct dentry, d_alias);
584 /* in order to prevent infinite loops we
585 * break if previous dentry is busy */
586 if (dentry != prev) {
589 spin_unlock(&dcache_lock);
591 /* try to kill all child dentries */
593 shrink_dcache_parent(dentry);
594 unlock_dentry(dentry);
597 /* now try to get rid of current dentry */
598 d_prune_aliases(inode);
602 spin_unlock(&dcache_lock);
605 static void prune_deathrow_one(struct ll_inode_info *lli)
607 struct inode *inode = ll_info2i(lli);
609 /* first, try to drop any dentries - they hold a ref on the inode */
610 if (S_ISDIR(inode->i_mode))
611 prune_dir_dentries(inode);
613 d_prune_aliases(inode);
616 /* if somebody still uses it, leave it */
617 LASSERT(atomic_read(&inode->i_count) > 0);
618 if (atomic_read(&inode->i_count) > 1)
621 CDEBUG(D_INODE, "inode %lu/%u(%d) looks a good candidate for prune\n",
622 inode->i_ino,inode->i_generation,
623 atomic_read(&inode->i_count));
625 /* seems nobody uses it anymore */
633 static void prune_deathrow(struct ll_sb_info *sbi, int try)
635 struct ll_inode_info *lli;
639 if (need_resched() && try)
643 if (!cfs_spin_trylock(&sbi->ll_deathrow_lock))
646 cfs_spin_lock(&sbi->ll_deathrow_lock);
651 if (!cfs_list_empty(&sbi->ll_deathrow)) {
652 lli = cfs_list_entry(sbi->ll_deathrow.next,
653 struct ll_inode_info,
655 cfs_list_del_init(&lli->lli_dead_list);
656 if (!cfs_list_empty(&sbi->ll_deathrow))
659 cfs_spin_unlock(&sbi->ll_deathrow_lock);
662 prune_deathrow_one(lli);
664 } while (empty == 0);
666 #else /* !HAVE_EXPORT___IGET */
667 #define prune_deathrow(sbi, try) do {} while (0)
668 #endif /* HAVE_EXPORT___IGET */
670 void client_common_put_super(struct super_block *sb)
672 struct ll_sb_info *sbi = ll_s2sbi(sb);
675 #ifdef CONFIG_FS_POSIX_ACL
676 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
677 et_fini(&sbi->ll_et);
678 rct_fini(&sbi->ll_rct);
682 obd_cancel_unused(sbi->ll_dt_exp, NULL, 0, NULL);
684 ll_close_thread_shutdown(sbi->ll_lcq);
688 /* destroy inodes in deathrow */
689 prune_deathrow(sbi, 0);
691 cfs_list_del(&sbi->ll_conn_chain);
693 obd_fid_fini(sbi->ll_dt_exp);
694 obd_disconnect(sbi->ll_dt_exp);
695 sbi->ll_dt_exp = NULL;
697 lprocfs_unregister_mountpoint(sbi);
699 obd_fid_fini(sbi->ll_md_exp);
700 obd_disconnect(sbi->ll_md_exp);
701 sbi->ll_md_exp = NULL;
706 void ll_kill_super(struct super_block *sb)
708 struct ll_sb_info *sbi;
713 if (!(sb->s_flags & MS_ACTIVE))
717 /* we need restore s_dev from changed for clustred NFS before put_super
718 * because new kernels have cached s_dev and change sb->s_dev in
719 * put_super not affected real removing devices */
721 sb->s_dev = sbi->ll_sdev_orig;
725 char *ll_read_opt(const char *opt, char *data)
731 CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
732 if (strncmp(opt, data, strlen(opt)))
734 if ((value = strchr(data, '=')) == NULL)
738 OBD_ALLOC(retval, strlen(value) + 1);
740 CERROR("out of memory!\n");
744 memcpy(retval, value, strlen(value)+1);
745 CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
749 static inline int ll_set_opt(const char *opt, char *data, int fl)
751 if (strncmp(opt, data, strlen(opt)) != 0)
757 /* non-client-specific mount options are parsed in lmd_parse */
758 static int ll_options(char *options, int *flags)
761 char *s1 = options, *s2;
767 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
770 CDEBUG(D_SUPER, "next opt=%s\n", s1);
771 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
776 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
781 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
786 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
791 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
796 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
801 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
803 /* Ignore deprecated mount option. The client will
804 * always try to mount with ACL support, whether this
805 * is used depends on whether server supports it. */
808 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
812 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
818 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
823 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
828 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
833 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
838 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
843 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
849 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
855 s2 = strchr(s1, ',');
863 void ll_lli_init(struct ll_inode_info *lli)
865 lli->lli_inode_magic = LLI_INODE_MAGIC;
866 cfs_sema_init(&lli->lli_size_sem, 1);
867 cfs_sema_init(&lli->lli_write_sem, 1);
868 cfs_sema_init(&lli->lli_trunc_sem, 1);
870 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
871 cfs_spin_lock_init(&lli->lli_lock);
872 CFS_INIT_LIST_HEAD(&lli->lli_close_list);
873 lli->lli_inode_magic = LLI_INODE_MAGIC;
874 cfs_sema_init(&lli->lli_och_sem, 1);
875 lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
876 lli->lli_mds_exec_och = NULL;
877 lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
878 lli->lli_open_fd_exec_count = 0;
879 CFS_INIT_LIST_HEAD(&lli->lli_dead_list);
880 lli->lli_remote_perms = NULL;
881 lli->lli_rmtperm_utime = 0;
882 cfs_sema_init(&lli->lli_rmtperm_sem, 1);
883 CFS_INIT_LIST_HEAD(&lli->lli_oss_capas);
886 int ll_fill_super(struct super_block *sb)
888 struct lustre_profile *lprof;
889 struct lustre_sb_info *lsi = s2lsi(sb);
890 struct ll_sb_info *sbi;
891 char *dt = NULL, *md = NULL;
892 char *profilenm = get_profile_name(sb);
893 struct config_llog_instance cfg = {0, };
894 char ll_instance[sizeof(sb) * 2 + 1];
898 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
902 /* client additional sb info */
903 lsi->lsi_llsbi = sbi = ll_init_sbi();
905 cfs_module_put(THIS_MODULE);
909 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
913 /* Generate a string unique to this super, in case some joker tries
914 to mount the same fs at two mount points.
915 Use the address of the super itself.*/
916 sprintf(ll_instance, "%p", sb);
917 cfg.cfg_instance = ll_instance;
918 cfg.cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
920 /* set up client obds */
921 err = lustre_process_log(sb, profilenm, &cfg);
923 CERROR("Unable to process log: %d\n", err);
927 lprof = class_get_profile(profilenm);
929 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
930 " read from the MGS. Does that filesystem "
931 "exist?\n", profilenm);
932 GOTO(out_free, err = -EINVAL);
934 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
935 lprof->lp_md, lprof->lp_dt);
937 OBD_ALLOC(dt, strlen(lprof->lp_dt) +
938 strlen(ll_instance) + 2);
940 GOTO(out_free, err = -ENOMEM);
941 sprintf(dt, "%s-%s", lprof->lp_dt, ll_instance);
943 OBD_ALLOC(md, strlen(lprof->lp_md) +
944 strlen(ll_instance) + 2);
946 GOTO(out_free, err = -ENOMEM);
947 sprintf(md, "%s-%s", lprof->lp_md, ll_instance);
949 /* connections, registrations, sb setup */
950 err = client_common_fill_super(sb, md, dt);
954 OBD_FREE(md, strlen(md) + 1);
956 OBD_FREE(dt, strlen(dt) + 1);
960 LCONSOLE_WARN("Client %s has started\n", profilenm);
963 } /* ll_fill_super */
966 void lu_context_keys_dump(void);
968 void ll_put_super(struct super_block *sb)
970 struct config_llog_instance cfg;
971 char ll_instance[sizeof(sb) * 2 + 1];
972 struct obd_device *obd;
973 struct lustre_sb_info *lsi = s2lsi(sb);
974 struct ll_sb_info *sbi = ll_s2sbi(sb);
975 char *profilenm = get_profile_name(sb);
979 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
981 ll_print_capa_stat(sbi);
983 sprintf(ll_instance, "%p", sb);
984 cfg.cfg_instance = ll_instance;
985 lustre_end_log(sb, NULL, &cfg);
987 if (sbi->ll_md_exp) {
988 obd = class_exp2obd(sbi->ll_md_exp);
990 force = obd->obd_force;
993 /* We need to set force before the lov_disconnect in
994 lustre_common_put_super, since l_d cleans up osc's as well. */
997 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
999 obd->obd_force = force;
1004 /* Only if client_common_fill_super succeeded */
1005 client_common_put_super(sb);
1009 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1010 class_manual_cleanup(obd);
1014 class_del_profile(profilenm);
1017 lsi->lsi_llsbi = NULL;
1019 lustre_common_put_super(sb);
1021 cl_env_cache_purge(~0);
1023 LCONSOLE_WARN("client %s umount complete\n", ll_instance);
1025 cfs_module_put(THIS_MODULE);
1028 } /* client_put_super */
1030 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
1032 struct inode *inode = NULL;
1033 /* NOTE: we depend on atomic igrab() -bzzz */
1034 lock_res_and_lock(lock);
1035 if (lock->l_ast_data) {
1036 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
1037 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1038 inode = igrab(lock->l_ast_data);
1040 inode = lock->l_ast_data;
1041 ldlm_lock_debug(NULL, inode->i_state & I_FREEING ?
1043 lock, __FILE__, __func__, __LINE__,
1044 "l_ast_data %p is bogus: magic %08x",
1045 lock->l_ast_data, lli->lli_inode_magic);
1049 unlock_res_and_lock(lock);
1053 static int null_if_equal(struct ldlm_lock *lock, void *data)
1055 if (data == lock->l_ast_data) {
1056 lock->l_ast_data = NULL;
1058 if (lock->l_req_mode != lock->l_granted_mode)
1059 LDLM_ERROR(lock,"clearing inode with ungranted lock");
1062 return LDLM_ITER_CONTINUE;
1065 void ll_clear_inode(struct inode *inode)
1067 struct ll_inode_info *lli = ll_i2info(inode);
1068 struct ll_sb_info *sbi = ll_i2sbi(inode);
1071 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1072 inode->i_generation, inode);
1074 if (S_ISDIR(inode->i_mode)) {
1075 /* these should have been cleared in ll_file_release */
1076 LASSERT(lli->lli_sai == NULL);
1077 LASSERT(lli->lli_opendir_key == NULL);
1078 LASSERT(lli->lli_opendir_pid == 0);
1081 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1082 md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
1083 null_if_equal, inode);
1085 LASSERT(!lli->lli_open_fd_write_count);
1086 LASSERT(!lli->lli_open_fd_read_count);
1087 LASSERT(!lli->lli_open_fd_exec_count);
1089 if (lli->lli_mds_write_och)
1090 ll_md_real_close(inode, FMODE_WRITE);
1091 if (lli->lli_mds_exec_och)
1092 ll_md_real_close(inode, FMODE_EXEC);
1093 if (lli->lli_mds_read_och)
1094 ll_md_real_close(inode, FMODE_READ);
1096 if (lli->lli_symlink_name) {
1097 OBD_FREE(lli->lli_symlink_name,
1098 strlen(lli->lli_symlink_name) + 1);
1099 lli->lli_symlink_name = NULL;
1102 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1103 LASSERT(lli->lli_posix_acl == NULL);
1104 if (lli->lli_remote_perms) {
1105 free_rmtperm_hash(lli->lli_remote_perms);
1106 lli->lli_remote_perms = NULL;
1109 #ifdef CONFIG_FS_POSIX_ACL
1110 else if (lli->lli_posix_acl) {
1111 LASSERT(cfs_atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1112 LASSERT(lli->lli_remote_perms == NULL);
1113 posix_acl_release(lli->lli_posix_acl);
1114 lli->lli_posix_acl = NULL;
1117 lli->lli_inode_magic = LLI_INODE_DEAD;
1119 #ifdef HAVE_EXPORT___IGET
1120 cfs_spin_lock(&sbi->ll_deathrow_lock);
1121 cfs_list_del_init(&lli->lli_dead_list);
1122 cfs_spin_unlock(&sbi->ll_deathrow_lock);
1124 ll_clear_inode_capas(inode);
1126 * XXX This has to be done before lsm is freed below, because
1127 * cl_object still uses inode lsm.
1129 cl_inode_fini(inode);
1132 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1133 lli->lli_smd = NULL;
1140 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
1141 struct md_open_data **mod)
1143 struct lustre_md md;
1144 struct ll_sb_info *sbi = ll_i2sbi(inode);
1145 struct ptlrpc_request *request = NULL;
1149 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1150 LUSTRE_OPC_ANY, NULL);
1151 if (IS_ERR(op_data))
1152 RETURN(PTR_ERR(op_data));
1154 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1157 ptlrpc_req_finished(request);
1158 if (rc == -ENOENT) {
1160 /* Unlinked special device node? Or just a race?
1161 * Pretend we done everything. */
1162 if (!S_ISREG(inode->i_mode) &&
1163 !S_ISDIR(inode->i_mode))
1164 rc = inode_setattr(inode, &op_data->op_attr);
1165 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1166 CERROR("md_setattr fails: rc = %d\n", rc);
1171 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1172 sbi->ll_md_exp, &md);
1174 ptlrpc_req_finished(request);
1178 /* We call inode_setattr to adjust timestamps.
1179 * If there is at least some data in file, we cleared ATTR_SIZE
1180 * above to avoid invoking vmtruncate, otherwise it is important
1181 * to call vmtruncate in inode_setattr to update inode->i_size
1183 rc = inode_setattr(inode, &op_data->op_attr);
1185 /* Extract epoch data if obtained. */
1186 op_data->op_handle = md.body->handle;
1187 op_data->op_ioepoch = md.body->ioepoch;
1189 ll_update_inode(inode, &md);
1190 ptlrpc_req_finished(request);
1195 /* Close IO epoch and send Size-on-MDS attribute update. */
1196 static int ll_setattr_done_writing(struct inode *inode,
1197 struct md_op_data *op_data,
1198 struct md_open_data *mod)
1200 struct ll_inode_info *lli = ll_i2info(inode);
1204 LASSERT(op_data != NULL);
1205 if (!S_ISREG(inode->i_mode))
1208 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1209 op_data->op_ioepoch, PFID(&lli->lli_fid));
1211 op_data->op_flags = MF_EPOCH_CLOSE;
1212 ll_done_writing_attr(inode, op_data);
1213 ll_pack_inode2opdata(inode, op_data, NULL);
1215 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1216 if (rc == -EAGAIN) {
1217 /* MDS has instructed us to obtain Size-on-MDS attribute
1218 * from OSTs and send setattr to back to MDS. */
1219 rc = ll_som_update(inode, op_data);
1221 CERROR("inode %lu mdc truncate failed: rc = %d\n",
1227 static int ll_setattr_do_truncate(struct inode *inode, loff_t size)
1229 struct obd_capa *capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
1232 rc = cl_setattr_do_truncate(inode, size, capa);
1233 ll_truncate_free_capa(capa);
1237 static int ll_setattr_ost(struct inode *inode)
1239 struct obd_capa *capa = ll_mdscapa_get(inode);
1242 rc = cl_setattr_ost(inode, capa);
1248 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1249 * object(s) determine the file size and mtime. Otherwise, the MDS will
1250 * keep these values until such a time that objects are allocated for it.
1251 * We do the MDS operations first, as it is checking permissions for us.
1252 * We don't to the MDS RPC if there is nothing that we want to store there,
1253 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1254 * going to do an RPC anyways.
1256 * If we are doing a truncate, we will send the mtime and ctime updates
1257 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1258 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1261 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1263 struct ll_inode_info *lli = ll_i2info(inode);
1264 struct lov_stripe_md *lsm = lli->lli_smd;
1265 struct md_op_data *op_data = NULL;
1266 struct md_open_data *mod = NULL;
1267 int ia_valid = attr->ia_valid;
1268 int rc = 0, rc1 = 0;
1271 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
1273 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETATTR, 1);
1275 if (ia_valid & ATTR_SIZE) {
1276 if (attr->ia_size > ll_file_maxbytes(inode)) {
1277 CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1278 attr->ia_size, ll_file_maxbytes(inode));
1282 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1285 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1286 if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1287 if (current->fsuid != inode->i_uid &&
1288 !cfs_capable(CFS_CAP_FOWNER))
1292 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1293 if (attr->ia_valid & ATTR_CTIME) {
1294 attr->ia_ctime = CFS_CURRENT_TIME;
1295 attr->ia_valid |= ATTR_CTIME_SET;
1297 if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1298 attr->ia_atime = CFS_CURRENT_TIME;
1299 attr->ia_valid |= ATTR_ATIME_SET;
1301 if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1302 attr->ia_mtime = CFS_CURRENT_TIME;
1303 attr->ia_valid |= ATTR_MTIME_SET;
1305 if ((attr->ia_valid & ATTR_CTIME) && !(attr->ia_valid & ATTR_MTIME)) {
1306 /* To avoid stale mtime on mds, obtain it from ost and send
1308 rc = cl_glimpse_size(inode);
1312 attr->ia_valid |= ATTR_MTIME_SET | ATTR_MTIME;
1313 attr->ia_mtime = inode->i_mtime;
1316 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1317 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1318 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1319 cfs_time_current_sec());
1321 /* NB: ATTR_SIZE will only be set after this point if the size
1322 * resides on the MDS, ie, this file has no objects. */
1324 attr->ia_valid &= ~ATTR_SIZE;
1326 /* We always do an MDS RPC, even if we're only changing the size;
1327 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1329 OBD_ALLOC_PTR(op_data);
1330 if (op_data == NULL)
1333 UNLOCK_INODE_MUTEX(inode);
1334 if (ia_valid & ATTR_SIZE)
1335 UP_WRITE_I_ALLOC_SEM(inode);
1336 cfs_down(&lli->lli_trunc_sem);
1337 LOCK_INODE_MUTEX(inode);
1338 if (ia_valid & ATTR_SIZE)
1339 DOWN_WRITE_I_ALLOC_SEM(inode);
1341 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1343 /* Open epoch for truncate. */
1344 if (exp_connect_som(ll_i2mdexp(inode)) && (ia_valid & ATTR_SIZE))
1345 op_data->op_flags = MF_EPOCH_OPEN;
1347 rc = ll_md_setattr(inode, op_data, &mod);
1351 ll_ioepoch_open(lli, op_data->op_ioepoch);
1352 if (!lsm || !S_ISREG(inode->i_mode)) {
1353 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1357 if (ia_valid & ATTR_SIZE)
1358 rc = ll_setattr_do_truncate(inode, attr->ia_size);
1359 else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
1360 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
1361 inode->i_ino, LTIME_S(attr->ia_mtime));
1362 rc = ll_setattr_ost(inode);
1367 if (op_data->op_ioepoch)
1368 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1369 ll_finish_md_op_data(op_data);
1371 cfs_up(&lli->lli_trunc_sem);
1372 return rc ? rc : rc1;
1375 int ll_setattr(struct dentry *de, struct iattr *attr)
1377 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1378 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1379 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1381 if ((de->d_inode->i_mode & S_ISUID) &&
1382 !(attr->ia_mode & S_ISUID) &&
1383 !(attr->ia_valid & ATTR_KILL_SUID))
1384 attr->ia_valid |= ATTR_KILL_SUID;
1386 if (((de->d_inode->i_mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1387 !(attr->ia_mode & S_ISGID) &&
1388 !(attr->ia_valid & ATTR_KILL_SGID))
1389 attr->ia_valid |= ATTR_KILL_SGID;
1391 return ll_setattr_raw(de->d_inode, attr);
1394 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1395 __u64 max_age, __u32 flags)
1397 struct ll_sb_info *sbi = ll_s2sbi(sb);
1398 struct obd_statfs obd_osfs;
1402 rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, flags);
1404 CERROR("md_statfs fails: rc = %d\n", rc);
1408 osfs->os_type = sb->s_magic;
1410 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1411 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1413 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1414 flags |= OBD_STATFS_NODELAY;
1416 rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
1417 &obd_osfs, max_age, flags);
1419 CERROR("obd_statfs fails: rc = %d\n", rc);
1423 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1424 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1427 osfs->os_bsize = obd_osfs.os_bsize;
1428 osfs->os_blocks = obd_osfs.os_blocks;
1429 osfs->os_bfree = obd_osfs.os_bfree;
1430 osfs->os_bavail = obd_osfs.os_bavail;
1432 /* If we don't have as many objects free on the OST as inodes
1433 * on the MDS, we reduce the total number of inodes to
1434 * compensate, so that the "inodes in use" number is correct.
1436 if (obd_osfs.os_ffree < osfs->os_ffree) {
1437 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1439 osfs->os_ffree = obd_osfs.os_ffree;
1444 #ifndef HAVE_STATFS_DENTRY_PARAM
1445 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1448 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1450 struct super_block *sb = de->d_sb;
1452 struct obd_statfs osfs;
1455 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1456 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1458 /* For now we will always get up-to-date statfs values, but in the
1459 * future we may allow some amount of caching on the client (e.g.
1460 * from QOS or lprocfs updates). */
1461 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - 1, 0);
1465 statfs_unpack(sfs, &osfs);
1467 /* We need to downshift for all 32-bit kernels, because we can't
1468 * tell if the kernel is being called via sys_statfs64() or not.
1469 * Stop before overflowing f_bsize - in which case it is better
1470 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1471 if (sizeof(long) < 8) {
1472 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1475 osfs.os_blocks >>= 1;
1476 osfs.os_bfree >>= 1;
1477 osfs.os_bavail >>= 1;
1481 sfs->f_blocks = osfs.os_blocks;
1482 sfs->f_bfree = osfs.os_bfree;
1483 sfs->f_bavail = osfs.os_bavail;
1488 void ll_inode_size_lock(struct inode *inode, int lock_lsm)
1490 struct ll_inode_info *lli;
1491 struct lov_stripe_md *lsm;
1493 lli = ll_i2info(inode);
1494 LASSERT(lli->lli_size_sem_owner != current);
1495 cfs_down(&lli->lli_size_sem);
1496 LASSERT(lli->lli_size_sem_owner == NULL);
1497 lli->lli_size_sem_owner = current;
1499 LASSERTF(lsm != NULL || lock_lsm == 0, "lsm %p, lock_lsm %d\n",
1502 lov_stripe_lock(lsm);
1505 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
1507 struct ll_inode_info *lli;
1508 struct lov_stripe_md *lsm;
1510 lli = ll_i2info(inode);
1512 LASSERTF(lsm != NULL || unlock_lsm == 0, "lsm %p, lock_lsm %d\n",
1515 lov_stripe_unlock(lsm);
1516 LASSERT(lli->lli_size_sem_owner == current);
1517 lli->lli_size_sem_owner = NULL;
1518 cfs_up(&lli->lli_size_sem);
1521 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1523 struct ll_inode_info *lli = ll_i2info(inode);
1524 struct mdt_body *body = md->body;
1525 struct lov_stripe_md *lsm = md->lsm;
1526 struct ll_sb_info *sbi = ll_i2sbi(inode);
1528 LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1530 if (lli->lli_smd == NULL) {
1531 if (lsm->lsm_magic != LOV_MAGIC_V1 &&
1532 lsm->lsm_magic != LOV_MAGIC_V3) {
1533 dump_lsm(D_ERROR, lsm);
1536 CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
1537 lsm, inode->i_ino, inode->i_generation, inode);
1538 cl_inode_init(inode, md);
1539 /* ll_inode_size_lock() requires it is only
1540 * called with lli_smd != NULL or lock_lsm == 0
1541 * or we can race between lock/unlock.
1544 lli->lli_maxbytes = lsm->lsm_maxbytes;
1545 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1546 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1548 LASSERT(lli->lli_smd->lsm_magic == lsm->lsm_magic &&
1549 lli->lli_smd->lsm_stripe_count ==
1550 lsm->lsm_stripe_count);
1551 if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
1552 CERROR("lsm mismatch for inode %ld\n",
1554 CERROR("lli_smd:\n");
1555 dump_lsm(D_ERROR, lli->lli_smd);
1557 dump_lsm(D_ERROR, lsm);
1561 if (lli->lli_smd != lsm)
1562 obd_free_memmd(ll_i2dtexp(inode), &lsm);
1565 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1566 if (body->valid & OBD_MD_FLRMTPERM)
1567 ll_update_remote_perm(inode, md->remote_perm);
1569 #ifdef CONFIG_FS_POSIX_ACL
1570 else if (body->valid & OBD_MD_FLACL) {
1571 cfs_spin_lock(&lli->lli_lock);
1572 if (lli->lli_posix_acl)
1573 posix_acl_release(lli->lli_posix_acl);
1574 lli->lli_posix_acl = md->posix_acl;
1575 cfs_spin_unlock(&lli->lli_lock);
1578 inode->i_ino = cl_fid_build_ino(&body->fid1);
1579 inode->i_generation = cl_fid_build_gen(&body->fid1);
1581 if (body->valid & OBD_MD_FLATIME &&
1582 body->atime > LTIME_S(inode->i_atime))
1583 LTIME_S(inode->i_atime) = body->atime;
1585 /* mtime is always updated with ctime, but can be set in past.
1586 As write and utime(2) may happen within 1 second, and utime's
1587 mtime has a priority over write's one, so take mtime from mds
1588 for the same ctimes. */
1589 if (body->valid & OBD_MD_FLCTIME &&
1590 body->ctime >= LTIME_S(inode->i_ctime)) {
1591 LTIME_S(inode->i_ctime) = body->ctime;
1592 if (body->valid & OBD_MD_FLMTIME) {
1593 CDEBUG(D_INODE, "setting ino %lu mtime "
1594 "from %lu to "LPU64"\n", inode->i_ino,
1595 LTIME_S(inode->i_mtime), body->mtime);
1596 LTIME_S(inode->i_mtime) = body->mtime;
1599 if (body->valid & OBD_MD_FLMODE)
1600 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
1601 if (body->valid & OBD_MD_FLTYPE)
1602 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
1603 LASSERT(inode->i_mode != 0);
1604 if (S_ISREG(inode->i_mode)) {
1605 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
1607 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1609 #ifdef HAVE_INODE_BLKSIZE
1610 inode->i_blksize = 1<<inode->i_blkbits;
1612 if (body->valid & OBD_MD_FLUID)
1613 inode->i_uid = body->uid;
1614 if (body->valid & OBD_MD_FLGID)
1615 inode->i_gid = body->gid;
1616 if (body->valid & OBD_MD_FLFLAGS)
1617 inode->i_flags = ll_ext_to_inode_flags(body->flags);
1618 if (body->valid & OBD_MD_FLNLINK)
1619 inode->i_nlink = body->nlink;
1620 if (body->valid & OBD_MD_FLRDEV)
1621 inode->i_rdev = old_decode_dev(body->rdev);
1623 if (body->valid & OBD_MD_FLID) {
1624 /* FID shouldn't be changed! */
1625 if (fid_is_sane(&lli->lli_fid)) {
1626 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
1627 "Trying to change FID "DFID
1628 " to the "DFID", inode %lu/%u(%p)\n",
1629 PFID(&lli->lli_fid), PFID(&body->fid1),
1630 inode->i_ino, inode->i_generation, inode);
1632 lli->lli_fid = body->fid1;
1635 LASSERT(fid_seq(&lli->lli_fid) != 0);
1637 if (body->valid & OBD_MD_FLSIZE) {
1638 if (exp_connect_som(ll_i2mdexp(inode)) &&
1639 S_ISREG(inode->i_mode) && lli->lli_smd) {
1640 struct lustre_handle lockh;
1643 /* As it is possible a blocking ast has been processed
1644 * by this time, we need to check there is an UPDATE
1645 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
1647 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
1650 if (lli->lli_flags & (LLIF_DONE_WRITING |
1651 LLIF_EPOCH_PENDING |
1653 CERROR("ino %lu flags %lu still has "
1654 "size authority! do not trust "
1655 "the size got from MDS\n",
1656 inode->i_ino, lli->lli_flags);
1658 /* Use old size assignment to avoid
1659 * deadlock bz14138 & bz14326 */
1660 inode->i_size = body->size;
1661 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
1663 ldlm_lock_decref(&lockh, mode);
1666 /* Use old size assignment to avoid
1667 * deadlock bz14138 & bz14326 */
1668 inode->i_size = body->size;
1671 if (body->valid & OBD_MD_FLBLOCKS)
1672 inode->i_blocks = body->blocks;
1675 if (body->valid & OBD_MD_FLMDSCAPA) {
1676 LASSERT(md->mds_capa);
1677 ll_add_capa(inode, md->mds_capa);
1679 if (body->valid & OBD_MD_FLOSSCAPA) {
1680 LASSERT(md->oss_capa);
1681 ll_add_capa(inode, md->oss_capa);
1685 static struct backing_dev_info ll_backing_dev_info = {
1686 .ra_pages = 0, /* No readahead */
1687 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12))
1688 .capabilities = 0, /* Does contribute to dirty memory */
1690 .memory_backed = 0, /* Does contribute to dirty memory */
1694 void ll_read_inode2(struct inode *inode, void *opaque)
1696 struct lustre_md *md = opaque;
1697 struct ll_inode_info *lli = ll_i2info(inode);
1700 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n",
1701 inode->i_ino, inode->i_generation, inode);
1705 LASSERT(!lli->lli_smd);
1707 /* Core attributes from the MDS first. This is a new inode, and
1708 * the VFS doesn't zero times in the core inode so we have to do
1709 * it ourselves. They will be overwritten by either MDS or OST
1710 * attributes - we just need to make sure they aren't newer. */
1711 LTIME_S(inode->i_mtime) = 0;
1712 LTIME_S(inode->i_atime) = 0;
1713 LTIME_S(inode->i_ctime) = 0;
1715 ll_update_inode(inode, md);
1717 /* OIDEBUG(inode); */
1719 if (S_ISREG(inode->i_mode)) {
1720 struct ll_sb_info *sbi = ll_i2sbi(inode);
1721 inode->i_op = &ll_file_inode_operations;
1722 inode->i_fop = sbi->ll_fop;
1723 inode->i_mapping->a_ops = &ll_aops;
1725 } else if (S_ISDIR(inode->i_mode)) {
1726 inode->i_op = &ll_dir_inode_operations;
1727 inode->i_fop = &ll_dir_operations;
1728 inode->i_mapping->a_ops = &ll_dir_aops;
1730 } else if (S_ISLNK(inode->i_mode)) {
1731 inode->i_op = &ll_fast_symlink_inode_operations;
1734 inode->i_op = &ll_special_inode_operations;
1736 init_special_inode(inode, inode->i_mode,
1737 kdev_t_to_nr(inode->i_rdev));
1739 /* initializing backing dev info. */
1740 inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
1746 void ll_delete_inode(struct inode *inode)
1748 struct ll_sb_info *sbi = ll_i2sbi(inode);
1752 rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
1754 CERROR("fid_delete() failed, rc %d\n", rc);
1756 truncate_inode_pages(&inode->i_data, 0);
1762 int ll_iocontrol(struct inode *inode, struct file *file,
1763 unsigned int cmd, unsigned long arg)
1765 struct ll_sb_info *sbi = ll_i2sbi(inode);
1766 struct ptlrpc_request *req = NULL;
1771 case FSFILT_IOC_GETFLAGS: {
1772 struct mdt_body *body;
1773 struct obd_capa *oc;
1775 oc = ll_mdscapa_get(inode);
1776 rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
1777 OBD_MD_FLFLAGS, 0, &req);
1780 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1784 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1786 flags = body->flags;
1788 ptlrpc_req_finished(req);
1790 RETURN(put_user(flags, (int *)arg));
1792 case FSFILT_IOC_SETFLAGS: {
1793 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1794 struct obd_info oinfo = { { { 0 } } };
1795 struct md_op_data *op_data;
1797 if (get_user(flags, (int *)arg))
1801 OBDO_ALLOC(oinfo.oi_oa);
1805 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
1806 LUSTRE_OPC_ANY, NULL);
1807 if (IS_ERR(op_data))
1808 RETURN(PTR_ERR(op_data));
1810 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
1811 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
1812 rc = md_setattr(sbi->ll_md_exp, op_data,
1813 NULL, 0, NULL, 0, &req, NULL);
1814 ll_finish_md_op_data(op_data);
1815 ptlrpc_req_finished(req);
1817 OBDO_FREE(oinfo.oi_oa);
1822 OBDO_FREE(oinfo.oi_oa);
1823 GOTO(update_cache, rc);
1826 oinfo.oi_oa->o_id = lsm->lsm_object_id;
1827 oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
1828 oinfo.oi_oa->o_flags = flags;
1829 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
1831 oinfo.oi_capa = ll_mdscapa_get(inode);
1833 obdo_from_inode(oinfo.oi_oa, inode,
1834 OBD_MD_FLFID | OBD_MD_FLGENER);
1835 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1836 capa_put(oinfo.oi_capa);
1837 OBDO_FREE(oinfo.oi_oa);
1839 if (rc != -EPERM && rc != -EACCES)
1840 CERROR("osc_setattr_async fails: rc = %d\n",rc);
1846 inode->i_flags = ll_ext_to_inode_flags(flags |
1847 MDS_BFLAG_EXT_FLAGS);
1857 int ll_flush_ctx(struct inode *inode)
1859 struct ll_sb_info *sbi = ll_i2sbi(inode);
1861 CDEBUG(D_SEC, "flush context for user %d\n", current->uid);
1863 obd_set_info_async(sbi->ll_md_exp,
1864 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
1866 obd_set_info_async(sbi->ll_dt_exp,
1867 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
1872 /* umount -f client means force down, don't save state */
1873 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1874 void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
1876 struct super_block *sb = vfsmnt->mnt_sb;
1878 void ll_umount_begin(struct super_block *sb)
1881 struct lustre_sb_info *lsi = s2lsi(sb);
1882 struct ll_sb_info *sbi = ll_s2sbi(sb);
1883 struct obd_device *obd;
1884 struct obd_ioctl_data ioc_data = { 0 };
1887 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1888 if (!(flags & MNT_FORCE)) {
1894 /* Tell the MGC we got umount -f */
1895 lsi->lsi_flags |= LSI_UMOUNT_FORCE;
1897 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
1898 sb->s_count, atomic_read(&sb->s_active));
1900 obd = class_exp2obd(sbi->ll_md_exp);
1902 CERROR("Invalid MDC connection handle "LPX64"\n",
1903 sbi->ll_md_exp->exp_handle.h_cookie);
1908 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp, sizeof ioc_data,
1911 obd = class_exp2obd(sbi->ll_dt_exp);
1913 CERROR("Invalid LOV connection handle "LPX64"\n",
1914 sbi->ll_dt_exp->exp_handle.h_cookie);
1920 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp, sizeof ioc_data,
1923 /* Really, we'd like to wait until there are no requests outstanding,
1924 * and then continue. For now, we just invalidate the requests,
1925 * schedule() and sleep one second if needed, and hope.
1928 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1929 if (atomic_read(&vfsmnt->mnt_count) > 2) {
1930 cfs_schedule_timeout_and_set_state(CFS_TASK_INTERRUPTIBLE,
1931 cfs_time_seconds(1));
1932 if (atomic_read(&vfsmnt->mnt_count) > 2)
1933 LCONSOLE_WARN("Mount still busy with %d refs! You "
1934 "may try to umount it a bit later\n",
1935 atomic_read(&vfsmnt->mnt_count));
1942 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
1944 struct ll_sb_info *sbi = ll_s2sbi(sb);
1948 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
1949 read_only = *flags & MS_RDONLY;
1950 err = obd_set_info_async(sbi->ll_md_exp,
1951 sizeof(KEY_READ_ONLY),
1952 KEY_READ_ONLY, sizeof(read_only),
1955 CERROR("Failed to change the read-only flag during "
1956 "remount: %d\n", err);
1961 sb->s_flags |= MS_RDONLY;
1963 sb->s_flags &= ~MS_RDONLY;
1968 int ll_prep_inode(struct inode **inode,
1969 struct ptlrpc_request *req,
1970 struct super_block *sb)
1972 struct ll_sb_info *sbi = NULL;
1973 struct lustre_md md;
1977 LASSERT(*inode || sb);
1978 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
1979 prune_deathrow(sbi, 1);
1980 memset(&md, 0, sizeof(struct lustre_md));
1982 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
1983 sbi->ll_md_exp, &md);
1988 ll_update_inode(*inode, &md);
1990 LASSERT(sb != NULL);
1993 * At this point server returns to client's same fid as client
1994 * generated for creating. So using ->fid1 is okay here.
1996 LASSERT(fid_is_sane(&md.body->fid1));
1998 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1), &md);
1999 if (*inode == NULL || IS_ERR(*inode)) {
2001 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2002 #ifdef CONFIG_FS_POSIX_ACL
2004 posix_acl_release(md.posix_acl);
2005 md.posix_acl = NULL;
2008 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2010 CERROR("new_inode -fatal: rc %d\n", rc);
2016 md_free_lustre_md(sbi->ll_md_exp, &md);
2020 int ll_obd_statfs(struct inode *inode, void *arg)
2022 struct ll_sb_info *sbi = NULL;
2023 struct obd_export *exp;
2025 struct obd_ioctl_data *data = NULL;
2029 if (!inode || !(sbi = ll_i2sbi(inode)))
2030 GOTO(out_statfs, rc = -EINVAL);
2032 rc = obd_ioctl_getdata(&buf, &len, arg);
2034 GOTO(out_statfs, rc);
2037 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2038 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2039 GOTO(out_statfs, rc = -EINVAL);
2041 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2042 if (type == LL_STATFS_MDC)
2043 exp = sbi->ll_md_exp;
2044 else if (type == LL_STATFS_LOV)
2045 exp = sbi->ll_dt_exp;
2047 GOTO(out_statfs, rc = -ENODEV);
2049 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2051 GOTO(out_statfs, rc);
2054 obd_ioctl_freedata(buf, len);
2058 int ll_process_config(struct lustre_cfg *lcfg)
2062 struct lprocfs_static_vars lvars;
2066 lprocfs_llite_init_vars(&lvars);
2068 /* The instance name contains the sb: lustre-client-aacfe000 */
2069 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2070 if (!ptr || !*(++ptr))
2072 if (sscanf(ptr, "%lx", &x) != 1)
2075 /* This better be a real Lustre superblock! */
2076 LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2078 /* Note we have not called client_common_fill_super yet, so
2079 proc fns must be able to handle that! */
2080 rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
2087 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2088 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2089 struct inode *i1, struct inode *i2,
2090 const char *name, int namelen,
2091 int mode, __u32 opc, void *data)
2093 LASSERT(i1 != NULL);
2095 if (namelen > ll_i2sbi(i1)->ll_namelen)
2096 return ERR_PTR(-ENAMETOOLONG);
2098 if (op_data == NULL)
2099 OBD_ALLOC_PTR(op_data);
2101 if (op_data == NULL)
2102 return ERR_PTR(-ENOMEM);
2104 ll_i2gids(op_data->op_suppgids, i1, i2);
2105 op_data->op_fid1 = *ll_inode2fid(i1);
2106 op_data->op_capa1 = ll_mdscapa_get(i1);
2109 op_data->op_fid2 = *ll_inode2fid(i2);
2110 op_data->op_capa2 = ll_mdscapa_get(i2);
2112 fid_zero(&op_data->op_fid2);
2113 op_data->op_capa2 = NULL;
2116 op_data->op_name = name;
2117 op_data->op_namelen = namelen;
2118 op_data->op_mode = mode;
2119 op_data->op_mod_time = cfs_time_current_sec();
2120 op_data->op_fsuid = current->fsuid;
2121 op_data->op_fsgid = current->fsgid;
2122 op_data->op_cap = cfs_curproc_cap_pack();
2123 op_data->op_bias = MDS_CHECK_SPLIT;
2124 op_data->op_opc = opc;
2125 op_data->op_mds = 0;
2126 op_data->op_data = data;
2131 void ll_finish_md_op_data(struct md_op_data *op_data)
2133 capa_put(op_data->op_capa1);
2134 capa_put(op_data->op_capa2);
2135 OBD_FREE_PTR(op_data);
2138 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2140 struct ll_sb_info *sbi;
2142 LASSERT((seq != NULL) && (vfs != NULL));
2143 sbi = ll_s2sbi(vfs->mnt_sb);
2145 if (sbi->ll_flags & LL_SBI_NOLCK)
2146 seq_puts(seq, ",nolock");
2148 if (sbi->ll_flags & LL_SBI_FLOCK)
2149 seq_puts(seq, ",flock");
2151 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2152 seq_puts(seq, ",localflock");
2154 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2155 seq_puts(seq, ",user_xattr");
2157 if (sbi->ll_flags & LL_SBI_ACL)
2158 seq_puts(seq, ",acl");
2160 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2161 seq_puts(seq, ",lazystatfs");