4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/llite/llite_lib.c
38 * Lustre Light Super operations
41 #define DEBUG_SUBSYSTEM S_LLITE
43 #include <linux/module.h>
44 #include <linux/types.h>
45 #include <linux/version.h>
48 #include <lustre_lite.h>
49 #include <lustre_ha.h>
50 #include <lustre_dlm.h>
51 #include <lprocfs_status.h>
52 #include <lustre_disk.h>
53 #include <lustre_param.h>
54 #include <lustre_log.h>
55 #include <cl_object.h>
56 #include <obd_cksum.h>
57 #include "llite_internal.h"
59 cfs_mem_cache_t *ll_file_data_slab;
61 CFS_LIST_HEAD(ll_super_blocks);
62 DEFINE_SPINLOCK(ll_sb_lock);
64 #ifndef MS_HAS_NEW_AOPS
65 extern struct address_space_operations ll_aops;
66 extern struct address_space_operations ll_dir_aops;
68 extern struct address_space_operations_ext ll_aops;
69 extern struct address_space_operations_ext ll_dir_aops;
73 #define log2(n) cfs_ffz(~(n))
76 static struct ll_sb_info *ll_init_sbi(void)
78 struct ll_sb_info *sbi = NULL;
85 OBD_ALLOC(sbi, sizeof(*sbi));
89 cfs_spin_lock_init(&sbi->ll_lock);
90 cfs_mutex_init(&sbi->ll_lco.lco_lock);
91 cfs_spin_lock_init(&sbi->ll_pp_extent_lock);
92 cfs_spin_lock_init(&sbi->ll_process_lock);
93 sbi->ll_rw_stats_on = 0;
96 pages = si.totalram - si.totalhigh;
97 if (pages >> (20 - CFS_PAGE_SHIFT) < 512) {
98 #ifdef HAVE_BGL_SUPPORT
99 sbi->ll_async_page_max = pages / 4;
101 sbi->ll_async_page_max = pages / 2;
104 sbi->ll_async_page_max = (pages / 4) * 3;
107 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
108 SBI_DEFAULT_READAHEAD_MAX);
109 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
110 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
111 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
112 CFS_INIT_LIST_HEAD(&sbi->ll_conn_chain);
113 CFS_INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
115 ll_generate_random_uuid(uuid);
116 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
117 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
119 cfs_spin_lock(&ll_sb_lock);
120 cfs_list_add_tail(&sbi->ll_list, &ll_super_blocks);
121 cfs_spin_unlock(&ll_sb_lock);
123 sbi->ll_flags |= LL_SBI_VERBOSE;
124 #ifdef ENABLE_CHECKSUM
125 sbi->ll_flags |= LL_SBI_CHECKSUM;
128 #ifdef HAVE_LRU_RESIZE_SUPPORT
129 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
132 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
133 cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
135 cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
139 /* metadata statahead is enabled by default */
140 sbi->ll_sa_max = LL_SA_RPC_DEF;
141 cfs_atomic_set(&sbi->ll_sa_total, 0);
142 cfs_atomic_set(&sbi->ll_sa_wrong, 0);
143 cfs_atomic_set(&sbi->ll_agl_total, 0);
144 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
149 void ll_free_sbi(struct super_block *sb)
151 struct ll_sb_info *sbi = ll_s2sbi(sb);
155 cfs_spin_lock(&ll_sb_lock);
156 cfs_list_del(&sbi->ll_list);
157 cfs_spin_unlock(&ll_sb_lock);
158 OBD_FREE(sbi, sizeof(*sbi));
163 static struct dentry_operations ll_d_root_ops = {
164 .d_compare = ll_dcompare,
165 .d_revalidate = ll_revalidate_nd,
168 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
169 struct vfsmount *mnt)
171 struct inode *root = 0;
172 struct ll_sb_info *sbi = ll_s2sbi(sb);
173 struct obd_device *obd;
174 struct obd_capa *oc = NULL;
175 struct obd_statfs *osfs = NULL;
176 struct ptlrpc_request *request = NULL;
177 struct obd_connect_data *data = NULL;
178 struct obd_uuid *uuid;
179 struct md_op_data *op_data;
180 struct lustre_md lmd;
182 int size, err, checksum;
185 obd = class_name2obd(md);
187 CERROR("MD %s: not setup or attached\n", md);
201 if (proc_lustre_fs_root) {
202 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
205 CERROR("could not register mount in /proc/fs/lustre\n");
208 /* indicate the features supported by this client */
209 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
210 OBD_CONNECT_ATTRFID |
211 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
212 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
213 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
214 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
215 OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR |
216 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH|
217 OBD_CONNECT_EINPROGRESS |
218 OBD_CONNECT_JOBSTATS;
220 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
221 data->ocd_connect_flags |= OBD_CONNECT_SOM;
223 #ifdef HAVE_LRU_RESIZE_SUPPORT
224 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
225 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
227 #ifdef CONFIG_FS_POSIX_ACL
228 data->ocd_connect_flags |= OBD_CONNECT_ACL;
231 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
232 /* flag mdc connection as lightweight, only used for test
233 * purpose, use with care */
234 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
236 data->ocd_ibits_known = MDS_INODELOCK_FULL;
237 data->ocd_version = LUSTRE_VERSION_CODE;
239 if (sb->s_flags & MS_RDONLY)
240 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
241 if (sbi->ll_flags & LL_SBI_USER_XATTR)
242 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
244 #ifdef HAVE_MS_FLOCK_LOCK
245 /* force vfs to use lustre handler for flock() calls - bug 10743 */
246 sb->s_flags |= MS_FLOCK_LOCK;
248 #ifdef MS_HAS_NEW_AOPS
249 sb->s_flags |= MS_HAS_NEW_AOPS;
252 if (sbi->ll_flags & LL_SBI_FLOCK)
253 sbi->ll_fop = &ll_file_operations_flock;
254 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
255 sbi->ll_fop = &ll_file_operations;
257 sbi->ll_fop = &ll_file_operations_noflock;
260 data->ocd_connect_flags |= OBD_CONNECT_REAL;
261 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
262 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
264 data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
266 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
268 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
269 "recovery, of which this client is not a "
270 "part. Please wait for recovery to complete,"
271 " abort, or time out.\n", md);
274 CERROR("cannot connect to %s: rc = %d\n", md, err);
278 err = obd_fid_init(sbi->ll_md_exp);
280 CERROR("Can't init metadata layer FID infrastructure, "
285 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
286 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 0);
288 GOTO(out_md_fid, err);
290 /* This needs to be after statfs to ensure connect has finished.
291 * Note that "data" does NOT contain the valid connect reply.
292 * If connecting to a 1.8 server there will be no LMV device, so
293 * we can access the MDC export directly and exp_connect_flags will
294 * be non-zero, but if accessing an upgraded 2.1 server it will
295 * have the correct flags filled in.
296 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
297 valid = sbi->ll_md_exp->exp_connect_flags & CLIENT_CONNECT_MDT_REQD;
298 if (sbi->ll_md_exp->exp_connect_flags != 0 &&
299 valid != CLIENT_CONNECT_MDT_REQD) {
302 OBD_ALLOC_WAIT(buf, CFS_PAGE_SIZE);
303 obd_connect_flags2str(buf, CFS_PAGE_SIZE,
304 valid ^ CLIENT_CONNECT_MDT_REQD, ",");
305 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
306 "feature(s) needed for correct operation "
307 "of this client (%s). Please upgrade "
308 "server or downgrade client.\n",
309 sbi->ll_md_exp->exp_obd->obd_name, buf);
310 OBD_FREE(buf, CFS_PAGE_SIZE);
311 GOTO(out_md, err = -EPROTO);
314 size = sizeof(*data);
315 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
316 KEY_CONN_DATA, &size, data, NULL);
318 CERROR("Get connect data failed: %d \n", err);
322 LASSERT(osfs->os_bsize);
323 sb->s_blocksize = osfs->os_bsize;
324 sb->s_blocksize_bits = log2(osfs->os_bsize);
325 sb->s_magic = LL_SUPER_MAGIC;
326 sb->s_maxbytes = MAX_LFS_FILESIZE;
327 sbi->ll_namelen = osfs->os_namelen;
328 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
330 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
331 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
332 LCONSOLE_INFO("Disabling user_xattr feature because "
333 "it is not supported on the server\n");
334 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
337 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
339 sb->s_flags |= MS_POSIXACL;
341 sbi->ll_flags |= LL_SBI_ACL;
343 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
345 sb->s_flags &= ~MS_POSIXACL;
347 sbi->ll_flags &= ~LL_SBI_ACL;
350 if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
351 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
352 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
353 LCONSOLE_INFO("client is set as remote by default.\n");
356 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
357 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
358 LCONSOLE_INFO("client claims to be remote, but server "
359 "rejected, forced to be local.\n");
363 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
364 LCONSOLE_INFO("client enabled MDS capability!\n");
365 sbi->ll_flags |= LL_SBI_MDS_CAPA;
368 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
369 LCONSOLE_INFO("client enabled OSS capability!\n");
370 sbi->ll_flags |= LL_SBI_OSS_CAPA;
373 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
374 sbi->ll_flags |= LL_SBI_64BIT_HASH;
376 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
377 sbi->ll_md_brw_size = data->ocd_brw_size;
379 sbi->ll_md_brw_size = CFS_PAGE_SIZE;
381 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK) {
382 LCONSOLE_INFO("Layout lock feature supported.\n");
383 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
386 obd = class_name2obd(dt);
388 CERROR("DT %s: not setup or attached\n", dt);
389 GOTO(out_md_fid, err = -ENODEV);
392 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
393 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
394 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
395 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
396 OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
397 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
398 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
399 OBD_CONNECT_MAXBYTES |
400 OBD_CONNECT_EINPROGRESS |
401 OBD_CONNECT_JOBSTATS;
403 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
404 data->ocd_connect_flags |= OBD_CONNECT_SOM;
406 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
407 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
408 * disabled by default, because it can still be enabled on the
409 * fly via /proc. As a consequence, we still need to come to an
410 * agreement on the supported algorithms at connect time */
411 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
413 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
414 data->ocd_cksum_types = OBD_CKSUM_ADLER;
416 data->ocd_cksum_types = cksum_types_supported_client();
419 #ifdef HAVE_LRU_RESIZE_SUPPORT
420 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
422 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
423 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
425 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
426 "ocd_grant: %d\n", data->ocd_connect_flags,
427 data->ocd_version, data->ocd_grant);
429 obd->obd_upcall.onu_owner = &sbi->ll_lco;
430 obd->obd_upcall.onu_upcall = cl_ocd_update;
432 data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
434 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data, NULL);
436 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
437 "recovery, of which this client is not a "
438 "part. Please wait for recovery to "
439 "complete, abort, or time out.\n", dt);
440 GOTO(out_md_fid, err);
442 CERROR("Cannot connect to %s: rc = %d\n", dt, err);
443 GOTO(out_md_fid, err);
446 err = obd_fid_init(sbi->ll_dt_exp);
448 CERROR("Can't init data layer FID infrastructure, "
453 cfs_mutex_lock(&sbi->ll_lco.lco_lock);
454 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
455 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
456 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
457 cfs_mutex_unlock(&sbi->ll_lco.lco_lock);
459 fid_zero(&sbi->ll_root_fid);
460 err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
462 CERROR("cannot mds_connect: rc = %d\n", err);
463 GOTO(out_lock_cn_cb, err);
465 if (!fid_is_sane(&sbi->ll_root_fid)) {
466 CERROR("Invalid root fid during mount\n");
467 GOTO(out_lock_cn_cb, err = -EINVAL);
469 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
471 sb->s_op = &lustre_super_operations;
472 #if THREAD_SIZE >= 8192 /*b=17630*/ && !defined(HAVE_FSTYPE_MOUNT) /*LU-812*/
473 sb->s_export_op = &lustre_export_operations;
477 * XXX: move this to after cbd setup? */
478 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
479 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
480 valid |= OBD_MD_FLRMTPERM;
481 else if (sbi->ll_flags & LL_SBI_ACL)
482 valid |= OBD_MD_FLACL;
484 OBD_ALLOC_PTR(op_data);
486 GOTO(out_lock_cn_cb, err = -ENOMEM);
488 op_data->op_fid1 = sbi->ll_root_fid;
489 op_data->op_mode = 0;
490 op_data->op_capa1 = oc;
491 op_data->op_valid = valid;
493 err = md_getattr(sbi->ll_md_exp, op_data, &request);
496 OBD_FREE_PTR(op_data);
498 CERROR("md_getattr failed for root: rc = %d\n", err);
499 GOTO(out_lock_cn_cb, err);
501 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
502 sbi->ll_md_exp, &lmd);
504 CERROR("failed to understand root inode md: rc = %d\n", err);
505 ptlrpc_req_finished (request);
506 GOTO(out_lock_cn_cb, err);
509 LASSERT(fid_is_sane(&sbi->ll_root_fid));
510 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid, 0), &lmd);
511 md_free_lustre_md(sbi->ll_md_exp, &lmd);
512 ptlrpc_req_finished(request);
514 if (root == NULL || IS_ERR(root)) {
516 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
517 #ifdef CONFIG_FS_POSIX_ACL
519 posix_acl_release(lmd.posix_acl);
520 lmd.posix_acl = NULL;
523 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
525 CERROR("lustre_lite: bad iget4 for root\n");
529 err = ll_close_thread_start(&sbi->ll_lcq);
531 CERROR("cannot start close thread: rc %d\n", err);
535 #ifdef CONFIG_FS_POSIX_ACL
536 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
537 rct_init(&sbi->ll_rct);
538 et_init(&sbi->ll_et);
542 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
543 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
544 KEY_CHECKSUM, sizeof(checksum), &checksum,
548 sb->s_root = d_alloc_root(root);
549 #ifdef HAVE_DCACHE_LOCK
550 sb->s_root->d_op = &ll_d_root_ops;
552 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
553 d_set_d_op(sb->s_root, &ll_d_root_ops);
554 sb->s_d_op = &ll_d_ops;
557 sbi->ll_sdev_orig = sb->s_dev;
559 /* We set sb->s_dev equal on all lustre clients in order to support
560 * NFS export clustering. NFSD requires that the FSID be the same
562 /* s_dev is also used in lt_compare() to compare two fs, but that is
563 * only a node-local comparison. */
564 uuid = obd_get_uuid(sbi->ll_md_exp);
566 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
579 obd_fid_fini(sbi->ll_dt_exp);
581 obd_disconnect(sbi->ll_dt_exp);
582 sbi->ll_dt_exp = NULL;
584 obd_fid_fini(sbi->ll_md_exp);
586 obd_disconnect(sbi->ll_md_exp);
587 sbi->ll_md_exp = NULL;
593 lprocfs_unregister_mountpoint(sbi);
597 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
601 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
603 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
604 KEY_MAX_EASIZE, &size, lmmsize, NULL);
606 CERROR("Get max mdsize error rc %d \n", rc);
611 void ll_dump_inode(struct inode *inode)
613 struct list_head *tmp;
614 int dentry_count = 0;
616 LASSERT(inode != NULL);
618 list_for_each(tmp, &inode->i_dentry)
621 CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
622 inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
623 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
626 void lustre_dump_dentry(struct dentry *dentry, int recur)
628 struct list_head *tmp;
631 LASSERT(dentry != NULL);
633 list_for_each(tmp, &dentry->d_subdirs)
636 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
637 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
638 dentry->d_name.len, dentry->d_name.name,
639 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
640 dentry->d_parent, dentry->d_inode, d_refcount(dentry),
641 dentry->d_flags, dentry->d_fsdata, subdirs);
642 if (dentry->d_inode != NULL)
643 ll_dump_inode(dentry->d_inode);
648 list_for_each(tmp, &dentry->d_subdirs) {
649 struct dentry *d = list_entry(tmp, struct dentry, d_u.d_child);
650 lustre_dump_dentry(d, recur - 1);
654 void client_common_put_super(struct super_block *sb)
656 struct ll_sb_info *sbi = ll_s2sbi(sb);
659 #ifdef CONFIG_FS_POSIX_ACL
660 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
661 et_fini(&sbi->ll_et);
662 rct_fini(&sbi->ll_rct);
666 obd_cancel_unused(sbi->ll_dt_exp, NULL, 0, NULL);
668 ll_close_thread_shutdown(sbi->ll_lcq);
672 cfs_list_del(&sbi->ll_conn_chain);
674 obd_fid_fini(sbi->ll_dt_exp);
675 obd_disconnect(sbi->ll_dt_exp);
676 sbi->ll_dt_exp = NULL;
678 lprocfs_unregister_mountpoint(sbi);
680 obd_fid_fini(sbi->ll_md_exp);
681 obd_disconnect(sbi->ll_md_exp);
682 sbi->ll_md_exp = NULL;
687 void ll_kill_super(struct super_block *sb)
689 struct ll_sb_info *sbi;
694 if (!(sb->s_flags & MS_ACTIVE))
698 /* we need restore s_dev from changed for clustred NFS before put_super
699 * because new kernels have cached s_dev and change sb->s_dev in
700 * put_super not affected real removing devices */
702 sb->s_dev = sbi->ll_sdev_orig;
706 char *ll_read_opt(const char *opt, char *data)
712 CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
713 if (strncmp(opt, data, strlen(opt)))
715 if ((value = strchr(data, '=')) == NULL)
719 OBD_ALLOC(retval, strlen(value) + 1);
721 CERROR("out of memory!\n");
725 memcpy(retval, value, strlen(value)+1);
726 CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
730 static inline int ll_set_opt(const char *opt, char *data, int fl)
732 if (strncmp(opt, data, strlen(opt)) != 0)
738 /* non-client-specific mount options are parsed in lmd_parse */
739 static int ll_options(char *options, int *flags)
742 char *s1 = options, *s2;
748 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
751 CDEBUG(D_SUPER, "next opt=%s\n", s1);
752 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
757 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
762 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
767 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
772 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
777 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
782 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 5, 50, 0)
783 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
785 /* Ignore deprecated mount option. The client will
786 * always try to mount with ACL support, whether this
787 * is used depends on whether server supports it. */
788 LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
789 "mount option 'acl'.\n");
792 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
794 LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
795 "mount option 'noacl'.\n");
799 #warning "{no}acl options have been deprecated since 1.8, please remove them"
801 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
807 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
812 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
817 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
822 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
827 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
832 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
837 tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW);
842 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
847 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
852 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
857 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
863 s2 = strchr(s1, ',');
871 void ll_lli_init(struct ll_inode_info *lli)
873 lli->lli_inode_magic = LLI_INODE_MAGIC;
875 lli->lli_ioepoch = 0;
876 lli->lli_maxbytes = MAX_LFS_FILESIZE;
877 cfs_spin_lock_init(&lli->lli_lock);
878 lli->lli_posix_acl = NULL;
879 lli->lli_remote_perms = NULL;
880 cfs_mutex_init(&lli->lli_rmtperm_mutex);
881 /* Do not set lli_fid, it has been initialized already. */
882 fid_zero(&lli->lli_pfid);
883 CFS_INIT_LIST_HEAD(&lli->lli_close_list);
884 CFS_INIT_LIST_HEAD(&lli->lli_oss_capas);
885 cfs_atomic_set(&lli->lli_open_count, 0);
886 lli->lli_mds_capa = NULL;
887 lli->lli_rmtperm_time = 0;
888 lli->lli_pending_och = NULL;
889 lli->lli_mds_read_och = NULL;
890 lli->lli_mds_write_och = NULL;
891 lli->lli_mds_exec_och = NULL;
892 lli->lli_open_fd_read_count = 0;
893 lli->lli_open_fd_write_count = 0;
894 lli->lli_open_fd_exec_count = 0;
895 cfs_mutex_init(&lli->lli_och_mutex);
896 cfs_spin_lock_init(&lli->lli_agl_lock);
897 lli->lli_has_smd = false;
898 lli->lli_clob = NULL;
900 LASSERT(lli->lli_vfs_inode.i_mode != 0);
901 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
902 cfs_mutex_init(&lli->lli_readdir_mutex);
903 lli->lli_opendir_key = NULL;
906 lli->lli_def_acl = NULL;
907 cfs_spin_lock_init(&lli->lli_sa_lock);
908 lli->lli_opendir_pid = 0;
910 cfs_sema_init(&lli->lli_size_sem, 1);
911 lli->lli_size_sem_owner = NULL;
912 lli->lli_symlink_name = NULL;
913 cfs_init_rwsem(&lli->lli_trunc_sem);
914 cfs_mutex_init(&lli->lli_write_mutex);
915 cfs_init_rwsem(&lli->lli_glimpse_sem);
916 lli->lli_glimpse_time = 0;
917 CFS_INIT_LIST_HEAD(&lli->lli_agl_list);
918 lli->lli_agl_index = 0;
919 lli->lli_async_rc = 0;
921 cfs_mutex_init(&lli->lli_layout_mutex);
924 static inline int ll_bdi_register(struct backing_dev_info *bdi)
926 #ifdef HAVE_BDI_REGISTER
927 static atomic_t ll_bdi_num = ATOMIC_INIT(0);
930 bdi->name = "lustre";
932 return bdi_register(bdi, NULL, "lustre-%d",
933 atomic_inc_return(&ll_bdi_num));
939 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
941 struct lustre_profile *lprof = NULL;
942 struct lustre_sb_info *lsi = s2lsi(sb);
943 struct ll_sb_info *sbi;
944 char *dt = NULL, *md = NULL;
945 char *profilenm = get_profile_name(sb);
946 struct config_llog_instance *cfg;
947 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
948 const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
952 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
960 /* client additional sb info */
961 lsi->lsi_llsbi = sbi = ll_init_sbi();
963 cfs_module_put(THIS_MODULE);
968 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
972 err = ll_bdi_init(&lsi->lsi_bdi);
975 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
976 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
977 err = ll_bdi_register(&lsi->lsi_bdi);
982 sb->s_bdi = &lsi->lsi_bdi;
985 /* Generate a string unique to this super, in case some joker tries
986 to mount the same fs at two mount points.
987 Use the address of the super itself.*/
988 cfg->cfg_instance = sb;
989 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
991 /* set up client obds */
992 err = lustre_process_log(sb, profilenm, cfg);
994 CERROR("Unable to process log: %d\n", err);
998 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
999 lprof = class_get_profile(profilenm);
1000 if (lprof == NULL) {
1001 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1002 " read from the MGS. Does that filesystem "
1003 "exist?\n", profilenm);
1004 GOTO(out_free, err = -EINVAL);
1006 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1007 lprof->lp_md, lprof->lp_dt);
1009 OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
1011 GOTO(out_free, err = -ENOMEM);
1012 sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
1014 OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
1016 GOTO(out_free, err = -ENOMEM);
1017 sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1019 /* connections, registrations, sb setup */
1020 err = client_common_fill_super(sb, md, dt, mnt);
1024 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1026 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1029 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1030 LCONSOLE_WARN("Mounted %s\n", profilenm);
1034 } /* ll_fill_super */
1037 void lu_context_keys_dump(void);
1039 void ll_put_super(struct super_block *sb)
1041 struct config_llog_instance cfg;
1042 struct obd_device *obd;
1043 struct lustre_sb_info *lsi = s2lsi(sb);
1044 struct ll_sb_info *sbi = ll_s2sbi(sb);
1045 char *profilenm = get_profile_name(sb);
1046 int force = 1, next;
1049 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1051 ll_print_capa_stat(sbi);
1053 cfg.cfg_instance = sb;
1054 lustre_end_log(sb, profilenm, &cfg);
1056 if (sbi->ll_md_exp) {
1057 obd = class_exp2obd(sbi->ll_md_exp);
1059 force = obd->obd_force;
1062 /* We need to set force before the lov_disconnect in
1063 lustre_common_put_super, since l_d cleans up osc's as well. */
1066 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1068 obd->obd_force = force;
1073 /* Only if client_common_fill_super succeeded */
1074 client_common_put_super(sb);
1078 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1079 class_manual_cleanup(obd);
1082 if (sbi->ll_flags & LL_SBI_VERBOSE)
1083 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1086 class_del_profile(profilenm);
1088 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1089 ll_bdi_destroy(&lsi->lsi_bdi);
1090 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1094 lsi->lsi_llsbi = NULL;
1096 lustre_common_put_super(sb);
1098 cl_env_cache_purge(~0);
1100 cfs_module_put(THIS_MODULE);
1103 } /* client_put_super */
1105 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
1107 struct inode *inode = NULL;
1108 /* NOTE: we depend on atomic igrab() -bzzz */
1109 lock_res_and_lock(lock);
1110 if (lock->l_ast_data) {
1111 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
1112 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1113 inode = igrab(lock->l_ast_data);
1115 inode = lock->l_ast_data;
1116 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1117 D_WARNING, lock, "l_ast_data %p is "
1118 "bogus: magic %08x", lock->l_ast_data,
1119 lli->lli_inode_magic);
1123 unlock_res_and_lock(lock);
1127 static int null_if_equal(struct ldlm_lock *lock, void *data)
1129 if (data == lock->l_ast_data) {
1130 lock->l_ast_data = NULL;
1132 if (lock->l_req_mode != lock->l_granted_mode)
1133 LDLM_ERROR(lock,"clearing inode with ungranted lock");
1136 return LDLM_ITER_CONTINUE;
1139 void ll_clear_inode(struct inode *inode)
1141 struct ll_inode_info *lli = ll_i2info(inode);
1142 struct ll_sb_info *sbi = ll_i2sbi(inode);
1145 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1146 inode->i_generation, inode);
1148 if (S_ISDIR(inode->i_mode)) {
1149 /* these should have been cleared in ll_file_release */
1150 LASSERT(lli->lli_opendir_key == NULL);
1151 LASSERT(lli->lli_sai == NULL);
1152 LASSERT(lli->lli_opendir_pid == 0);
1155 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1156 md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
1157 null_if_equal, inode);
1159 LASSERT(!lli->lli_open_fd_write_count);
1160 LASSERT(!lli->lli_open_fd_read_count);
1161 LASSERT(!lli->lli_open_fd_exec_count);
1163 if (lli->lli_mds_write_och)
1164 ll_md_real_close(inode, FMODE_WRITE);
1165 if (lli->lli_mds_exec_och)
1166 ll_md_real_close(inode, FMODE_EXEC);
1167 if (lli->lli_mds_read_och)
1168 ll_md_real_close(inode, FMODE_READ);
1170 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1171 OBD_FREE(lli->lli_symlink_name,
1172 strlen(lli->lli_symlink_name) + 1);
1173 lli->lli_symlink_name = NULL;
1176 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1177 LASSERT(lli->lli_posix_acl == NULL);
1178 if (lli->lli_remote_perms) {
1179 free_rmtperm_hash(lli->lli_remote_perms);
1180 lli->lli_remote_perms = NULL;
1183 #ifdef CONFIG_FS_POSIX_ACL
1184 else if (lli->lli_posix_acl) {
1185 LASSERT(cfs_atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1186 LASSERT(lli->lli_remote_perms == NULL);
1187 posix_acl_release(lli->lli_posix_acl);
1188 lli->lli_posix_acl = NULL;
1191 lli->lli_inode_magic = LLI_INODE_DEAD;
1193 ll_clear_inode_capas(inode);
1194 if (!S_ISDIR(inode->i_mode))
1195 LASSERT(cfs_list_empty(&lli->lli_agl_list));
1198 * XXX This has to be done before lsm is freed below, because
1199 * cl_object still uses inode lsm.
1201 cl_inode_fini(inode);
1202 lli->lli_has_smd = false;
1207 int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
1208 struct md_open_data **mod)
1210 struct lustre_md md;
1211 struct inode *inode = dentry->d_inode;
1212 struct ll_sb_info *sbi = ll_i2sbi(inode);
1213 struct ptlrpc_request *request = NULL;
1217 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1218 LUSTRE_OPC_ANY, NULL);
1219 if (IS_ERR(op_data))
1220 RETURN(PTR_ERR(op_data));
1222 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1225 ptlrpc_req_finished(request);
1226 if (rc == -ENOENT) {
1228 /* Unlinked special device node? Or just a race?
1229 * Pretend we done everything. */
1230 if (!S_ISREG(inode->i_mode) &&
1231 !S_ISDIR(inode->i_mode)) {
1232 ia_valid = op_data->op_attr.ia_valid;
1233 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1234 rc = simple_setattr(dentry, &op_data->op_attr);
1235 op_data->op_attr.ia_valid = ia_valid;
1237 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1238 CERROR("md_setattr fails: rc = %d\n", rc);
1243 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1244 sbi->ll_md_exp, &md);
1246 ptlrpc_req_finished(request);
1250 /* We want to adjust timestamps.
1251 * If there is at least some data in file, we cleared ATTR_SIZE
1252 * to avoid update size, otherwise it is important to do.(SOM case)
1254 ia_valid = op_data->op_attr.ia_valid;
1255 /* Since we set ATTR_*_SET flags above, and already done permission
1256 * check, So don't let inode_change_ok() check it again. */
1257 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1258 rc = simple_setattr(dentry, &op_data->op_attr);
1259 op_data->op_attr.ia_valid = ia_valid;
1261 /* Extract epoch data if obtained. */
1262 op_data->op_handle = md.body->handle;
1263 op_data->op_ioepoch = md.body->ioepoch;
1265 ll_update_inode(inode, &md);
1266 ptlrpc_req_finished(request);
1271 /* Close IO epoch and send Size-on-MDS attribute update. */
1272 static int ll_setattr_done_writing(struct inode *inode,
1273 struct md_op_data *op_data,
1274 struct md_open_data *mod)
1276 struct ll_inode_info *lli = ll_i2info(inode);
1280 LASSERT(op_data != NULL);
1281 if (!S_ISREG(inode->i_mode))
1284 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1285 op_data->op_ioepoch, PFID(&lli->lli_fid));
1287 op_data->op_flags = MF_EPOCH_CLOSE;
1288 ll_done_writing_attr(inode, op_data);
1289 ll_pack_inode2opdata(inode, op_data, NULL);
1291 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1292 if (rc == -EAGAIN) {
1293 /* MDS has instructed us to obtain Size-on-MDS attribute
1294 * from OSTs and send setattr to back to MDS. */
1295 rc = ll_som_update(inode, op_data);
1297 CERROR("inode %lu mdc truncate failed: rc = %d\n",
1303 static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
1305 struct obd_capa *capa;
1308 if (attr->ia_valid & ATTR_SIZE)
1309 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
1311 capa = ll_mdscapa_get(inode);
1313 rc = cl_setattr_ost(inode, attr, capa);
1315 if (attr->ia_valid & ATTR_SIZE)
1316 ll_truncate_free_capa(capa);
1323 #ifndef HAVE_VFS_INODE_NEWSIZE_OK
1325 * inode_newsize_ok - may this inode be truncated to a given size
1326 * @inode: the inode to be truncated
1327 * @offset: the new size to assign to the inode
1328 * @Returns: 0 on success, -ve errno on failure
1330 * inode_newsize_ok will check filesystem limits and ulimits to check that the
1331 * new inode size is within limits. inode_newsize_ok will also send SIGXFSZ
1332 * when necessary. Caller must not proceed with inode size change if failure is
1333 * returned. @inode must be a file (not directory), with appropriate
1334 * permissions to allow truncate (inode_newsize_ok does NOT check these
1337 * inode_newsize_ok must be called with i_mutex held.
1339 int inode_newsize_ok(const struct inode *inode, loff_t offset)
1341 if (inode->i_size < offset) {
1342 unsigned long limit;
1344 limit = rlimit(RLIMIT_FSIZE);
1345 if (limit != RLIM_INFINITY && offset > limit)
1347 if (offset > inode->i_sb->s_maxbytes)
1351 * truncation of in-use swapfiles is disallowed - it would
1352 * cause subsequent swapout to scribble on the now-freed
1355 if (IS_SWAPFILE(inode))
1361 send_sig(SIGXFSZ, current, 0);
1367 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1368 * object(s) determine the file size and mtime. Otherwise, the MDS will
1369 * keep these values until such a time that objects are allocated for it.
1370 * We do the MDS operations first, as it is checking permissions for us.
1371 * We don't to the MDS RPC if there is nothing that we want to store there,
1372 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1373 * going to do an RPC anyways.
1375 * If we are doing a truncate, we will send the mtime and ctime updates
1376 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1377 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1380 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr)
1382 struct lov_stripe_md *lsm;
1383 struct inode *inode = dentry->d_inode;
1384 struct ll_inode_info *lli = ll_i2info(inode);
1385 struct md_op_data *op_data = NULL;
1386 struct md_open_data *mod = NULL;
1387 int ia_valid = attr->ia_valid;
1388 int rc = 0, rc1 = 0;
1391 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
1394 if (ia_valid & ATTR_SIZE) {
1395 /* Check new size against VFS/VM file size limit and rlimit */
1396 rc = inode_newsize_ok(inode, attr->ia_size);
1400 /* The maximum Lustre file size is variable, based on the
1401 * OST maximum object size and number of stripes. This
1402 * needs another check in addition to the VFS check above. */
1403 if (attr->ia_size > ll_file_maxbytes(inode)) {
1404 CDEBUG(D_INODE,"file "DFID" too large %llu > "LPU64"\n",
1405 PFID(&lli->lli_fid), attr->ia_size,
1406 ll_file_maxbytes(inode));
1410 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1413 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1414 if (ia_valid & TIMES_SET_FLAGS) {
1415 if (cfs_curproc_fsuid() != inode->i_uid &&
1416 !cfs_capable(CFS_CAP_FOWNER))
1420 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1421 if (attr->ia_valid & ATTR_CTIME) {
1422 attr->ia_ctime = CFS_CURRENT_TIME;
1423 attr->ia_valid |= ATTR_CTIME_SET;
1425 if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1426 attr->ia_atime = CFS_CURRENT_TIME;
1427 attr->ia_valid |= ATTR_ATIME_SET;
1429 if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1430 attr->ia_mtime = CFS_CURRENT_TIME;
1431 attr->ia_valid |= ATTR_MTIME_SET;
1434 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1435 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1436 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1437 cfs_time_current_sec());
1439 /* We always do an MDS RPC, even if we're only changing the size;
1440 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1442 OBD_ALLOC_PTR(op_data);
1443 if (op_data == NULL)
1446 if (!S_ISDIR(inode->i_mode)) {
1447 if (ia_valid & ATTR_SIZE)
1448 UP_WRITE_I_ALLOC_SEM(inode);
1449 mutex_unlock(&inode->i_mutex);
1450 cfs_down_write(&lli->lli_trunc_sem);
1451 mutex_lock(&inode->i_mutex);
1452 if (ia_valid & ATTR_SIZE)
1453 DOWN_WRITE_I_ALLOC_SEM(inode);
1456 /* We need a steady stripe configuration for setattr to avoid
1458 lsm = ccc_inode_lsm_get(inode);
1460 /* NB: ATTR_SIZE will only be set after this point if the size
1461 * resides on the MDS, ie, this file has no objects. */
1463 attr->ia_valid &= ~ATTR_SIZE;
1465 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1467 /* Open epoch for truncate. */
1468 if (exp_connect_som(ll_i2mdexp(inode)) &&
1469 (ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
1470 op_data->op_flags = MF_EPOCH_OPEN;
1472 rc = ll_md_setattr(dentry, op_data, &mod);
1476 ll_ioepoch_open(lli, op_data->op_ioepoch);
1477 if (lsm == NULL || !S_ISREG(inode->i_mode)) {
1478 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1482 if (ia_valid & ATTR_SIZE)
1483 attr->ia_valid |= ATTR_SIZE;
1484 if (ia_valid & (ATTR_SIZE |
1485 ATTR_ATIME | ATTR_ATIME_SET |
1486 ATTR_MTIME | ATTR_MTIME_SET))
1487 /* For truncate and utimes sending attributes to OSTs, setting
1488 * mtime/atime to the past will be performed under PW [0:EOF]
1489 * extent lock (new_size:EOF for truncate). It may seem
1490 * excessive to send mtime/atime updates to OSTs when not
1491 * setting times to past, but it is necessary due to possible
1492 * time de-synchronization between MDT inode and OST objects */
1493 rc = ll_setattr_ost(inode, attr);
1496 ccc_inode_lsm_put(inode, lsm);
1498 if (op_data->op_ioepoch) {
1499 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1503 ll_finish_md_op_data(op_data);
1505 if (!S_ISDIR(inode->i_mode))
1506 cfs_up_write(&lli->lli_trunc_sem);
1508 ll_stats_ops_tally(ll_i2sbi(inode), (ia_valid & ATTR_SIZE) ?
1509 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1514 int ll_setattr(struct dentry *de, struct iattr *attr)
1516 int mode = de->d_inode->i_mode;
1518 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1519 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1520 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1522 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1523 (ATTR_SIZE|ATTR_MODE)) &&
1524 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1525 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1526 !(attr->ia_mode & S_ISGID))))
1527 attr->ia_valid |= ATTR_FORCE;
1529 if ((mode & S_ISUID) &&
1530 !(attr->ia_mode & S_ISUID) &&
1531 !(attr->ia_valid & ATTR_KILL_SUID))
1532 attr->ia_valid |= ATTR_KILL_SUID;
1534 if (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1535 !(attr->ia_mode & S_ISGID) &&
1536 !(attr->ia_valid & ATTR_KILL_SGID))
1537 attr->ia_valid |= ATTR_KILL_SGID;
1539 return ll_setattr_raw(de, attr);
1542 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1543 __u64 max_age, __u32 flags)
1545 struct ll_sb_info *sbi = ll_s2sbi(sb);
1546 struct obd_statfs obd_osfs;
1550 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1552 CERROR("md_statfs fails: rc = %d\n", rc);
1556 osfs->os_type = sb->s_magic;
1558 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1559 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1561 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1562 flags |= OBD_STATFS_NODELAY;
1564 rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1566 CERROR("obd_statfs fails: rc = %d\n", rc);
1570 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1571 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1574 osfs->os_bsize = obd_osfs.os_bsize;
1575 osfs->os_blocks = obd_osfs.os_blocks;
1576 osfs->os_bfree = obd_osfs.os_bfree;
1577 osfs->os_bavail = obd_osfs.os_bavail;
1579 /* If we don't have as many objects free on the OST as inodes
1580 * on the MDS, we reduce the total number of inodes to
1581 * compensate, so that the "inodes in use" number is correct.
1583 if (obd_osfs.os_ffree < osfs->os_ffree) {
1584 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1586 osfs->os_ffree = obd_osfs.os_ffree;
1591 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1593 struct super_block *sb = de->d_sb;
1594 struct obd_statfs osfs;
1597 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1598 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1600 /* Some amount of caching on the client is allowed */
1601 rc = ll_statfs_internal(sb, &osfs,
1602 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1607 statfs_unpack(sfs, &osfs);
1609 /* We need to downshift for all 32-bit kernels, because we can't
1610 * tell if the kernel is being called via sys_statfs64() or not.
1611 * Stop before overflowing f_bsize - in which case it is better
1612 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1613 if (sizeof(long) < 8) {
1614 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1617 osfs.os_blocks >>= 1;
1618 osfs.os_bfree >>= 1;
1619 osfs.os_bavail >>= 1;
1623 sfs->f_blocks = osfs.os_blocks;
1624 sfs->f_bfree = osfs.os_bfree;
1625 sfs->f_bavail = osfs.os_bavail;
1630 void ll_inode_size_lock(struct inode *inode)
1632 struct ll_inode_info *lli;
1634 LASSERT(!S_ISDIR(inode->i_mode));
1636 lli = ll_i2info(inode);
1637 LASSERT(lli->lli_size_sem_owner != current);
1638 cfs_down(&lli->lli_size_sem);
1639 LASSERT(lli->lli_size_sem_owner == NULL);
1640 lli->lli_size_sem_owner = current;
1643 void ll_inode_size_unlock(struct inode *inode)
1645 struct ll_inode_info *lli;
1647 lli = ll_i2info(inode);
1648 LASSERT(lli->lli_size_sem_owner == current);
1649 lli->lli_size_sem_owner = NULL;
1650 cfs_up(&lli->lli_size_sem);
1653 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1655 struct ll_inode_info *lli = ll_i2info(inode);
1656 struct mdt_body *body = md->body;
1657 struct lov_stripe_md *lsm = md->lsm;
1658 struct ll_sb_info *sbi = ll_i2sbi(inode);
1660 LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1662 LASSERT(S_ISREG(inode->i_mode));
1663 cfs_mutex_lock(&lli->lli_och_mutex);
1664 CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
1665 lsm, inode->i_ino, inode->i_generation, inode);
1666 /* cl_file_inode_init must go before lli_has_smd or a race
1667 * is possible where client thinks the file has stripes,
1668 * but lov raid0 is not setup yet and parallel e.g.
1669 * glimpse would try to use uninitialized lov */
1670 if (cl_file_inode_init(inode, md) == 0)
1671 lli->lli_has_smd = true;
1672 cfs_mutex_unlock(&lli->lli_och_mutex);
1674 lli->lli_maxbytes = lsm->lsm_maxbytes;
1675 if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
1676 lli->lli_maxbytes = MAX_LFS_FILESIZE;
1677 if (md->lsm != NULL)
1678 obd_free_memmd(ll_i2dtexp(inode), &md->lsm);
1681 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1682 if (body->valid & OBD_MD_FLRMTPERM)
1683 ll_update_remote_perm(inode, md->remote_perm);
1685 #ifdef CONFIG_FS_POSIX_ACL
1686 else if (body->valid & OBD_MD_FLACL) {
1687 cfs_spin_lock(&lli->lli_lock);
1688 if (lli->lli_posix_acl)
1689 posix_acl_release(lli->lli_posix_acl);
1690 lli->lli_posix_acl = md->posix_acl;
1691 cfs_spin_unlock(&lli->lli_lock);
1694 inode->i_ino = cl_fid_build_ino(&body->fid1, 0);
1695 inode->i_generation = cl_fid_build_gen(&body->fid1);
1697 if (body->valid & OBD_MD_FLATIME) {
1698 if (body->atime > LTIME_S(inode->i_atime))
1699 LTIME_S(inode->i_atime) = body->atime;
1700 lli->lli_lvb.lvb_atime = body->atime;
1702 if (body->valid & OBD_MD_FLMTIME) {
1703 if (body->mtime > LTIME_S(inode->i_mtime)) {
1704 CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1705 "to "LPU64"\n", inode->i_ino,
1706 LTIME_S(inode->i_mtime), body->mtime);
1707 LTIME_S(inode->i_mtime) = body->mtime;
1709 lli->lli_lvb.lvb_mtime = body->mtime;
1711 if (body->valid & OBD_MD_FLCTIME) {
1712 if (body->ctime > LTIME_S(inode->i_ctime))
1713 LTIME_S(inode->i_ctime) = body->ctime;
1714 lli->lli_lvb.lvb_ctime = body->ctime;
1716 if (body->valid & OBD_MD_FLMODE)
1717 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
1718 if (body->valid & OBD_MD_FLTYPE)
1719 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
1720 LASSERT(inode->i_mode != 0);
1721 if (S_ISREG(inode->i_mode)) {
1722 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
1724 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1726 if (body->valid & OBD_MD_FLUID)
1727 inode->i_uid = body->uid;
1728 if (body->valid & OBD_MD_FLGID)
1729 inode->i_gid = body->gid;
1730 if (body->valid & OBD_MD_FLFLAGS)
1731 inode->i_flags = ll_ext_to_inode_flags(body->flags);
1732 if (body->valid & OBD_MD_FLNLINK)
1733 inode->i_nlink = body->nlink;
1734 if (body->valid & OBD_MD_FLRDEV)
1735 inode->i_rdev = old_decode_dev(body->rdev);
1737 if (body->valid & OBD_MD_FLID) {
1738 /* FID shouldn't be changed! */
1739 if (fid_is_sane(&lli->lli_fid)) {
1740 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
1741 "Trying to change FID "DFID
1742 " to the "DFID", inode %lu/%u(%p)\n",
1743 PFID(&lli->lli_fid), PFID(&body->fid1),
1744 inode->i_ino, inode->i_generation, inode);
1746 lli->lli_fid = body->fid1;
1749 LASSERT(fid_seq(&lli->lli_fid) != 0);
1751 if (body->valid & OBD_MD_FLSIZE) {
1752 if (exp_connect_som(ll_i2mdexp(inode)) &&
1753 S_ISREG(inode->i_mode) && lli->lli_has_smd) {
1754 struct lustre_handle lockh;
1757 /* As it is possible a blocking ast has been processed
1758 * by this time, we need to check there is an UPDATE
1759 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
1761 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
1764 if (lli->lli_flags & (LLIF_DONE_WRITING |
1765 LLIF_EPOCH_PENDING |
1767 CERROR("ino %lu flags %u still has "
1768 "size authority! do not trust "
1769 "the size got from MDS\n",
1770 inode->i_ino, lli->lli_flags);
1772 /* Use old size assignment to avoid
1773 * deadlock bz14138 & bz14326 */
1774 i_size_write(inode, body->size);
1775 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
1777 ldlm_lock_decref(&lockh, mode);
1780 /* Use old size assignment to avoid
1781 * deadlock bz14138 & bz14326 */
1782 i_size_write(inode, body->size);
1784 CDEBUG(D_VFSTRACE, "inode=%lu, updating i_size %llu\n",
1785 inode->i_ino, (unsigned long long)body->size);
1788 if (body->valid & OBD_MD_FLBLOCKS)
1789 inode->i_blocks = body->blocks;
1792 if (body->valid & OBD_MD_FLMDSCAPA) {
1793 LASSERT(md->mds_capa);
1794 ll_add_capa(inode, md->mds_capa);
1796 if (body->valid & OBD_MD_FLOSSCAPA) {
1797 LASSERT(md->oss_capa);
1798 ll_add_capa(inode, md->oss_capa);
1802 void ll_read_inode2(struct inode *inode, void *opaque)
1804 struct lustre_md *md = opaque;
1805 struct ll_inode_info *lli = ll_i2info(inode);
1808 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1809 PFID(&lli->lli_fid), inode);
1811 LASSERT(!lli->lli_has_smd);
1813 /* Core attributes from the MDS first. This is a new inode, and
1814 * the VFS doesn't zero times in the core inode so we have to do
1815 * it ourselves. They will be overwritten by either MDS or OST
1816 * attributes - we just need to make sure they aren't newer. */
1817 LTIME_S(inode->i_mtime) = 0;
1818 LTIME_S(inode->i_atime) = 0;
1819 LTIME_S(inode->i_ctime) = 0;
1821 ll_update_inode(inode, md);
1823 /* OIDEBUG(inode); */
1825 /* initializing backing dev info. */
1826 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
1829 if (S_ISREG(inode->i_mode)) {
1830 struct ll_sb_info *sbi = ll_i2sbi(inode);
1831 inode->i_op = &ll_file_inode_operations;
1832 inode->i_fop = sbi->ll_fop;
1833 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
1835 } else if (S_ISDIR(inode->i_mode)) {
1836 inode->i_op = &ll_dir_inode_operations;
1837 inode->i_fop = &ll_dir_operations;
1838 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_dir_aops;
1840 } else if (S_ISLNK(inode->i_mode)) {
1841 inode->i_op = &ll_fast_symlink_inode_operations;
1844 inode->i_op = &ll_special_inode_operations;
1846 init_special_inode(inode, inode->i_mode,
1847 kdev_t_to_nr(inode->i_rdev));
1853 void ll_delete_inode(struct inode *inode)
1855 struct cl_inode_info *lli = cl_i2info(inode);
1856 struct ll_sb_info *sbi = ll_i2sbi(inode);
1860 rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
1862 CERROR("fid_delete() failed, rc %d\n", rc);
1864 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
1865 /* discard all dirty pages before truncating them, required by
1866 * osc_extent implementation at LU-1030. */
1867 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_DISCARD);
1869 truncate_inode_pages(&inode->i_data, 0);
1871 /* Workaround for LU-118 */
1872 if (inode->i_data.nrpages) {
1873 TREE_READ_LOCK_IRQ(&inode->i_data);
1874 TREE_READ_UNLOCK_IRQ(&inode->i_data);
1875 LASSERTF(inode->i_data.nrpages == 0,
1876 "inode=%lu/%u(%p) nrpages=%lu, see "
1877 "http://jira.whamcloud.com/browse/LU-118\n",
1878 inode->i_ino, inode->i_generation, inode,
1879 inode->i_data.nrpages);
1881 /* Workaround end */
1883 #ifdef HAVE_SBOPS_EVICT_INODE
1884 ll_clear_inode(inode);
1885 end_writeback(inode);
1893 int ll_iocontrol(struct inode *inode, struct file *file,
1894 unsigned int cmd, unsigned long arg)
1896 struct ll_sb_info *sbi = ll_i2sbi(inode);
1897 struct ptlrpc_request *req = NULL;
1902 case FSFILT_IOC_GETFLAGS: {
1903 struct mdt_body *body;
1904 struct md_op_data *op_data;
1906 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
1907 0, 0, LUSTRE_OPC_ANY,
1909 if (IS_ERR(op_data))
1910 RETURN(PTR_ERR(op_data));
1912 op_data->op_valid = OBD_MD_FLFLAGS;
1913 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
1914 ll_finish_md_op_data(op_data);
1916 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1920 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1922 flags = body->flags;
1924 ptlrpc_req_finished(req);
1926 RETURN(put_user(flags, (int *)arg));
1928 case FSFILT_IOC_SETFLAGS: {
1929 struct lov_stripe_md *lsm;
1930 struct obd_info oinfo = { { { 0 } } };
1931 struct md_op_data *op_data;
1933 if (get_user(flags, (int *)arg))
1936 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
1937 LUSTRE_OPC_ANY, NULL);
1938 if (IS_ERR(op_data))
1939 RETURN(PTR_ERR(op_data));
1941 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
1942 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
1943 rc = md_setattr(sbi->ll_md_exp, op_data,
1944 NULL, 0, NULL, 0, &req, NULL);
1945 ll_finish_md_op_data(op_data);
1946 ptlrpc_req_finished(req);
1950 OBDO_ALLOC(oinfo.oi_oa);
1954 lsm = ccc_inode_lsm_get(inode);
1956 inode->i_flags = ll_ext_to_inode_flags(flags);
1957 OBDO_FREE(oinfo.oi_oa);
1962 oinfo.oi_oa->o_id = lsm->lsm_object_id;
1963 oinfo.oi_oa->o_seq = lsm->lsm_object_seq;
1964 oinfo.oi_oa->o_flags = flags;
1965 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
1967 oinfo.oi_capa = ll_mdscapa_get(inode);
1968 obdo_set_parent_fid(oinfo.oi_oa, &ll_i2info(inode)->lli_fid);
1969 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1970 capa_put(oinfo.oi_capa);
1971 OBDO_FREE(oinfo.oi_oa);
1972 ccc_inode_lsm_put(inode, lsm);
1974 if (rc && rc != -EPERM && rc != -EACCES)
1975 CERROR("osc_setattr_async fails: rc = %d\n", rc);
1986 int ll_flush_ctx(struct inode *inode)
1988 struct ll_sb_info *sbi = ll_i2sbi(inode);
1990 CDEBUG(D_SEC, "flush context for user %d\n", cfs_curproc_uid());
1992 obd_set_info_async(NULL, sbi->ll_md_exp,
1993 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
1995 obd_set_info_async(NULL, sbi->ll_dt_exp,
1996 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2001 /* umount -f client means force down, don't save state */
2002 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
2003 void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
2005 struct super_block *sb = vfsmnt->mnt_sb;
2007 void ll_umount_begin(struct super_block *sb)
2010 struct ll_sb_info *sbi = ll_s2sbi(sb);
2011 struct obd_device *obd;
2012 struct obd_ioctl_data *ioc_data;
2015 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
2016 if (!(flags & MNT_FORCE)) {
2022 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2023 sb->s_count, atomic_read(&sb->s_active));
2025 obd = class_exp2obd(sbi->ll_md_exp);
2027 CERROR("Invalid MDC connection handle "LPX64"\n",
2028 sbi->ll_md_exp->exp_handle.h_cookie);
2034 obd = class_exp2obd(sbi->ll_dt_exp);
2036 CERROR("Invalid LOV connection handle "LPX64"\n",
2037 sbi->ll_dt_exp->exp_handle.h_cookie);
2043 OBD_ALLOC_PTR(ioc_data);
2045 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2046 sizeof ioc_data, ioc_data, NULL);
2048 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2049 sizeof ioc_data, ioc_data, NULL);
2051 OBD_FREE_PTR(ioc_data);
2055 /* Really, we'd like to wait until there are no requests outstanding,
2056 * and then continue. For now, we just invalidate the requests,
2057 * schedule() and sleep one second if needed, and hope.
2060 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
2061 if (atomic_read(&vfsmnt->mnt_count) > 2) {
2062 cfs_schedule_timeout_and_set_state(CFS_TASK_INTERRUPTIBLE,
2063 cfs_time_seconds(1));
2064 if (atomic_read(&vfsmnt->mnt_count) > 2)
2065 LCONSOLE_WARN("Mount still busy with %d refs! You "
2066 "may try to umount it a bit later\n",
2067 atomic_read(&vfsmnt->mnt_count));
2074 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2076 struct ll_sb_info *sbi = ll_s2sbi(sb);
2077 char *profilenm = get_profile_name(sb);
2081 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2082 read_only = *flags & MS_RDONLY;
2083 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2084 sizeof(KEY_READ_ONLY),
2085 KEY_READ_ONLY, sizeof(read_only),
2088 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2089 profilenm, read_only ?
2090 "read-only" : "read-write", err);
2095 sb->s_flags |= MS_RDONLY;
2097 sb->s_flags &= ~MS_RDONLY;
2099 if (sbi->ll_flags & LL_SBI_VERBOSE)
2100 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2101 read_only ? "read-only" : "read-write");
2106 int ll_prep_inode(struct inode **inode,
2107 struct ptlrpc_request *req,
2108 struct super_block *sb)
2110 struct ll_sb_info *sbi = NULL;
2111 struct lustre_md md;
2116 LASSERT(*inode || sb);
2117 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2118 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2119 sbi->ll_md_exp, &md);
2124 ll_update_inode(*inode, &md);
2126 LASSERT(sb != NULL);
2129 * At this point server returns to client's same fid as client
2130 * generated for creating. So using ->fid1 is okay here.
2132 LASSERT(fid_is_sane(&md.body->fid1));
2134 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1, 0), &md);
2135 if (*inode == NULL || IS_ERR(*inode)) {
2137 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2138 #ifdef CONFIG_FS_POSIX_ACL
2140 posix_acl_release(md.posix_acl);
2141 md.posix_acl = NULL;
2144 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2146 CERROR("new_inode -fatal: rc %d\n", rc);
2151 /* sanity check for LAYOUT lock. */
2152 ibits = MDS_INODELOCK_LAYOUT;
2153 if (S_ISREG(md.body->mode) && sbi->ll_flags & LL_SBI_LAYOUT_LOCK &&
2154 md.lsm != NULL && !ll_have_md_lock(*inode, &ibits, LCK_MINMODE)) {
2155 char *fsname = ll_get_fsname(*inode);
2156 CERROR("%s: inode "DFID" (%p) layout lock not granted.\n",
2157 fsname, PFID(ll_inode2fid(*inode)),
2160 OBD_FREE(fsname, MGS_PARAM_MAXLEN);
2164 md_free_lustre_md(sbi->ll_md_exp, &md);
2168 int ll_obd_statfs(struct inode *inode, void *arg)
2170 struct ll_sb_info *sbi = NULL;
2171 struct obd_export *exp;
2173 struct obd_ioctl_data *data = NULL;
2177 if (!inode || !(sbi = ll_i2sbi(inode)))
2178 GOTO(out_statfs, rc = -EINVAL);
2180 rc = obd_ioctl_getdata(&buf, &len, arg);
2182 GOTO(out_statfs, rc);
2185 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2186 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2187 GOTO(out_statfs, rc = -EINVAL);
2189 if (data->ioc_inllen1 != sizeof(__u32) ||
2190 data->ioc_inllen2 != sizeof(__u32) ||
2191 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2192 data->ioc_plen2 != sizeof(struct obd_uuid))
2193 GOTO(out_statfs, rc = -EINVAL);
2195 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2196 if (type == LL_STATFS_LMV)
2197 exp = sbi->ll_md_exp;
2198 else if (type == LL_STATFS_LOV)
2199 exp = sbi->ll_dt_exp;
2201 GOTO(out_statfs, rc = -ENODEV);
2203 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2205 GOTO(out_statfs, rc);
2208 obd_ioctl_freedata(buf, len);
2212 int ll_process_config(struct lustre_cfg *lcfg)
2216 struct lprocfs_static_vars lvars;
2220 lprocfs_llite_init_vars(&lvars);
2222 /* The instance name contains the sb: lustre-client-aacfe000 */
2223 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2224 if (!ptr || !*(++ptr))
2226 if (sscanf(ptr, "%lx", &x) != 1)
2229 /* This better be a real Lustre superblock! */
2230 LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2232 /* Note we have not called client_common_fill_super yet, so
2233 proc fns must be able to handle that! */
2234 rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
2241 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2242 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2243 struct inode *i1, struct inode *i2,
2244 const char *name, int namelen,
2245 int mode, __u32 opc, void *data)
2247 LASSERT(i1 != NULL);
2249 if (namelen > ll_i2sbi(i1)->ll_namelen)
2250 return ERR_PTR(-ENAMETOOLONG);
2252 if (op_data == NULL)
2253 OBD_ALLOC_PTR(op_data);
2255 if (op_data == NULL)
2256 return ERR_PTR(-ENOMEM);
2258 ll_i2gids(op_data->op_suppgids, i1, i2);
2259 op_data->op_fid1 = *ll_inode2fid(i1);
2260 op_data->op_capa1 = ll_mdscapa_get(i1);
2263 op_data->op_fid2 = *ll_inode2fid(i2);
2264 op_data->op_capa2 = ll_mdscapa_get(i2);
2266 fid_zero(&op_data->op_fid2);
2267 op_data->op_capa2 = NULL;
2270 op_data->op_name = name;
2271 op_data->op_namelen = namelen;
2272 op_data->op_mode = mode;
2273 op_data->op_mod_time = cfs_time_current_sec();
2274 op_data->op_fsuid = cfs_curproc_fsuid();
2275 op_data->op_fsgid = cfs_curproc_fsgid();
2276 op_data->op_cap = cfs_curproc_cap_pack();
2277 op_data->op_bias = MDS_CHECK_SPLIT;
2278 op_data->op_opc = opc;
2279 op_data->op_mds = 0;
2280 op_data->op_data = data;
2282 /* If the file is being opened after mknod() (normally due to NFS)
2283 * try to use the default stripe data from parent directory for
2284 * allocating OST objects. Try to pass the parent FID to MDS. */
2285 if (opc == LUSTRE_OPC_CREATE && i1 == i2 && S_ISREG(i2->i_mode) &&
2286 !ll_i2info(i2)->lli_has_smd) {
2287 struct ll_inode_info *lli = ll_i2info(i2);
2289 cfs_spin_lock(&lli->lli_lock);
2290 if (likely(!lli->lli_has_smd && !fid_is_zero(&lli->lli_pfid)))
2291 op_data->op_fid1 = lli->lli_pfid;
2292 cfs_spin_unlock(&lli->lli_lock);
2293 /** We ignore parent's capability temporary. */
2299 void ll_finish_md_op_data(struct md_op_data *op_data)
2301 capa_put(op_data->op_capa1);
2302 capa_put(op_data->op_capa2);
2303 OBD_FREE_PTR(op_data);
2306 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2308 struct ll_sb_info *sbi;
2310 LASSERT((seq != NULL) && (vfs != NULL));
2311 sbi = ll_s2sbi(vfs->mnt_sb);
2313 if (sbi->ll_flags & LL_SBI_NOLCK)
2314 seq_puts(seq, ",nolock");
2316 if (sbi->ll_flags & LL_SBI_FLOCK)
2317 seq_puts(seq, ",flock");
2319 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2320 seq_puts(seq, ",localflock");
2322 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2323 seq_puts(seq, ",user_xattr");
2325 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2326 seq_puts(seq, ",lazystatfs");
2332 * Get obd name by cmd, and copy out to user space
2334 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2336 struct ll_sb_info *sbi = ll_i2sbi(inode);
2337 struct obd_device *obd;
2340 if (cmd == OBD_IOC_GETDTNAME)
2341 obd = class_exp2obd(sbi->ll_dt_exp);
2342 else if (cmd == OBD_IOC_GETMDNAME)
2343 obd = class_exp2obd(sbi->ll_md_exp);
2350 if (cfs_copy_to_user((void *)arg, obd->obd_name,
2351 strlen(obd->obd_name) + 1))