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, Intel Corporation.
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;
67 extern struct address_space_operations_ext ll_aops;
71 #define log2(n) ffz(~(n))
74 static struct ll_sb_info *ll_init_sbi(void)
76 struct ll_sb_info *sbi = NULL;
78 unsigned long lru_page_max;
84 OBD_ALLOC(sbi, sizeof(*sbi));
88 spin_lock_init(&sbi->ll_lock);
89 mutex_init(&sbi->ll_lco.lco_lock);
90 spin_lock_init(&sbi->ll_pp_extent_lock);
91 spin_lock_init(&sbi->ll_process_lock);
92 sbi->ll_rw_stats_on = 0;
95 pages = si.totalram - si.totalhigh;
96 if (pages >> (20 - CFS_PAGE_SHIFT) < 512) {
97 #ifdef HAVE_BGL_SUPPORT
98 lru_page_max = pages / 4;
100 lru_page_max = pages / 2;
103 lru_page_max = (pages / 4) * 3;
106 /* initialize lru data */
107 cfs_atomic_set(&sbi->ll_cache.ccc_users, 0);
108 sbi->ll_cache.ccc_lru_max = lru_page_max;
109 cfs_atomic_set(&sbi->ll_cache.ccc_lru_left, lru_page_max);
110 spin_lock_init(&sbi->ll_cache.ccc_lru_lock);
111 CFS_INIT_LIST_HEAD(&sbi->ll_cache.ccc_lru);
113 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
114 SBI_DEFAULT_READAHEAD_MAX);
115 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
116 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
117 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
118 CFS_INIT_LIST_HEAD(&sbi->ll_conn_chain);
119 CFS_INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
121 ll_generate_random_uuid(uuid);
122 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
123 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
125 spin_lock(&ll_sb_lock);
126 cfs_list_add_tail(&sbi->ll_list, &ll_super_blocks);
127 spin_unlock(&ll_sb_lock);
129 sbi->ll_flags |= LL_SBI_VERBOSE;
130 #ifdef ENABLE_CHECKSUM
131 sbi->ll_flags |= LL_SBI_CHECKSUM;
134 #ifdef HAVE_LRU_RESIZE_SUPPORT
135 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
138 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
139 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
141 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
145 /* metadata statahead is enabled by default */
146 sbi->ll_sa_max = LL_SA_RPC_DEF;
147 cfs_atomic_set(&sbi->ll_sa_total, 0);
148 cfs_atomic_set(&sbi->ll_sa_wrong, 0);
149 cfs_atomic_set(&sbi->ll_agl_total, 0);
150 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
155 void ll_free_sbi(struct super_block *sb)
157 struct ll_sb_info *sbi = ll_s2sbi(sb);
161 spin_lock(&ll_sb_lock);
162 cfs_list_del(&sbi->ll_list);
163 spin_unlock(&ll_sb_lock);
164 OBD_FREE(sbi, sizeof(*sbi));
169 static struct dentry_operations ll_d_root_ops = {
170 .d_compare = ll_dcompare,
171 .d_revalidate = ll_revalidate_nd,
174 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
175 struct vfsmount *mnt)
177 struct inode *root = 0;
178 struct ll_sb_info *sbi = ll_s2sbi(sb);
179 struct obd_device *obd;
180 struct obd_capa *oc = NULL;
181 struct obd_statfs *osfs = NULL;
182 struct ptlrpc_request *request = NULL;
183 struct obd_connect_data *data = NULL;
184 struct obd_uuid *uuid;
185 struct md_op_data *op_data;
186 struct lustre_md lmd;
188 int size, err, checksum;
191 obd = class_name2obd(md);
193 CERROR("MD %s: not setup or attached\n", md);
207 if (proc_lustre_fs_root) {
208 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
211 CERROR("could not register mount in /proc/fs/lustre\n");
214 /* indicate the features supported by this client */
215 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
216 OBD_CONNECT_ATTRFID |
217 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
218 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
219 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
220 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
221 OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR |
222 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH|
223 OBD_CONNECT_EINPROGRESS |
224 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE;
226 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
227 data->ocd_connect_flags |= OBD_CONNECT_SOM;
229 #ifdef HAVE_LRU_RESIZE_SUPPORT
230 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
231 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
233 #ifdef CONFIG_FS_POSIX_ACL
234 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
237 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
238 /* flag mdc connection as lightweight, only used for test
239 * purpose, use with care */
240 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
242 data->ocd_ibits_known = MDS_INODELOCK_FULL;
243 data->ocd_version = LUSTRE_VERSION_CODE;
245 if (sb->s_flags & MS_RDONLY)
246 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
247 if (sbi->ll_flags & LL_SBI_USER_XATTR)
248 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
250 #ifdef HAVE_MS_FLOCK_LOCK
251 /* force vfs to use lustre handler for flock() calls - bug 10743 */
252 sb->s_flags |= MS_FLOCK_LOCK;
254 #ifdef MS_HAS_NEW_AOPS
255 sb->s_flags |= MS_HAS_NEW_AOPS;
258 if (sbi->ll_flags & LL_SBI_FLOCK)
259 sbi->ll_fop = &ll_file_operations_flock;
260 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
261 sbi->ll_fop = &ll_file_operations;
263 sbi->ll_fop = &ll_file_operations_noflock;
266 data->ocd_connect_flags |= OBD_CONNECT_REAL;
267 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
268 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
270 data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
272 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
274 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
275 "recovery, of which this client is not a "
276 "part. Please wait for recovery to complete,"
277 " abort, or time out.\n", md);
280 CERROR("cannot connect to %s: rc = %d\n", md, err);
284 err = obd_fid_init(sbi->ll_md_exp);
286 CERROR("Can't init metadata layer FID infrastructure, "
291 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
292 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 0);
294 GOTO(out_md_fid, err);
296 /* This needs to be after statfs to ensure connect has finished.
297 * Note that "data" does NOT contain the valid connect reply.
298 * If connecting to a 1.8 server there will be no LMV device, so
299 * we can access the MDC export directly and exp_connect_flags will
300 * be non-zero, but if accessing an upgraded 2.1 server it will
301 * have the correct flags filled in.
302 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
303 valid = sbi->ll_md_exp->exp_connect_flags & CLIENT_CONNECT_MDT_REQD;
304 if (sbi->ll_md_exp->exp_connect_flags != 0 &&
305 valid != CLIENT_CONNECT_MDT_REQD) {
308 OBD_ALLOC_WAIT(buf, CFS_PAGE_SIZE);
309 obd_connect_flags2str(buf, CFS_PAGE_SIZE,
310 valid ^ CLIENT_CONNECT_MDT_REQD, ",");
311 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
312 "feature(s) needed for correct operation "
313 "of this client (%s). Please upgrade "
314 "server or downgrade client.\n",
315 sbi->ll_md_exp->exp_obd->obd_name, buf);
316 OBD_FREE(buf, CFS_PAGE_SIZE);
317 GOTO(out_md, err = -EPROTO);
320 size = sizeof(*data);
321 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
322 KEY_CONN_DATA, &size, data, NULL);
324 CERROR("Get connect data failed: %d \n", err);
328 LASSERT(osfs->os_bsize);
329 sb->s_blocksize = osfs->os_bsize;
330 sb->s_blocksize_bits = log2(osfs->os_bsize);
331 sb->s_magic = LL_SUPER_MAGIC;
332 sb->s_maxbytes = MAX_LFS_FILESIZE;
333 sbi->ll_namelen = osfs->os_namelen;
334 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
336 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
337 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
338 LCONSOLE_INFO("Disabling user_xattr feature because "
339 "it is not supported on the server\n");
340 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
343 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
345 sb->s_flags |= MS_POSIXACL;
347 sbi->ll_flags |= LL_SBI_ACL;
349 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
351 sb->s_flags &= ~MS_POSIXACL;
353 sbi->ll_flags &= ~LL_SBI_ACL;
356 if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
357 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
358 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
359 LCONSOLE_INFO("client is set as remote by default.\n");
362 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
363 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
364 LCONSOLE_INFO("client claims to be remote, but server "
365 "rejected, forced to be local.\n");
369 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
370 LCONSOLE_INFO("client enabled MDS capability!\n");
371 sbi->ll_flags |= LL_SBI_MDS_CAPA;
374 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
375 LCONSOLE_INFO("client enabled OSS capability!\n");
376 sbi->ll_flags |= LL_SBI_OSS_CAPA;
379 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
380 sbi->ll_flags |= LL_SBI_64BIT_HASH;
382 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
383 sbi->ll_md_brw_size = data->ocd_brw_size;
385 sbi->ll_md_brw_size = CFS_PAGE_SIZE;
387 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK) {
388 LCONSOLE_INFO("Layout lock feature supported.\n");
389 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
392 obd = class_name2obd(dt);
394 CERROR("DT %s: not setup or attached\n", dt);
395 GOTO(out_md_fid, err = -ENODEV);
398 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
399 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
400 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
401 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
402 OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
403 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
404 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
405 OBD_CONNECT_MAXBYTES |
406 OBD_CONNECT_EINPROGRESS |
407 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE;
409 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
410 data->ocd_connect_flags |= OBD_CONNECT_SOM;
412 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
413 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
414 * disabled by default, because it can still be enabled on the
415 * fly via /proc. As a consequence, we still need to come to an
416 * agreement on the supported algorithms at connect time */
417 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
419 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
420 data->ocd_cksum_types = OBD_CKSUM_ADLER;
422 data->ocd_cksum_types = cksum_types_supported_client();
425 #ifdef HAVE_LRU_RESIZE_SUPPORT
426 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
428 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
429 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
431 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
432 "ocd_grant: %d\n", data->ocd_connect_flags,
433 data->ocd_version, data->ocd_grant);
435 obd->obd_upcall.onu_owner = &sbi->ll_lco;
436 obd->obd_upcall.onu_upcall = cl_ocd_update;
438 data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
440 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data, NULL);
442 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
443 "recovery, of which this client is not a "
444 "part. Please wait for recovery to "
445 "complete, abort, or time out.\n", dt);
446 GOTO(out_md_fid, err);
448 CERROR("Cannot connect to %s: rc = %d\n", dt, err);
449 GOTO(out_md_fid, err);
452 err = obd_fid_init(sbi->ll_dt_exp);
454 CERROR("Can't init data layer FID infrastructure, "
459 mutex_lock(&sbi->ll_lco.lco_lock);
460 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
461 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
462 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
463 mutex_unlock(&sbi->ll_lco.lco_lock);
465 fid_zero(&sbi->ll_root_fid);
466 err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
468 CERROR("cannot mds_connect: rc = %d\n", err);
469 GOTO(out_lock_cn_cb, err);
471 if (!fid_is_sane(&sbi->ll_root_fid)) {
472 CERROR("Invalid root fid during mount\n");
473 GOTO(out_lock_cn_cb, err = -EINVAL);
475 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
477 sb->s_op = &lustre_super_operations;
478 #if THREAD_SIZE >= 8192 /*b=17630*/
479 sb->s_export_op = &lustre_export_operations;
483 * XXX: move this to after cbd setup? */
484 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
485 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
486 valid |= OBD_MD_FLRMTPERM;
487 else if (sbi->ll_flags & LL_SBI_ACL)
488 valid |= OBD_MD_FLACL;
490 OBD_ALLOC_PTR(op_data);
492 GOTO(out_lock_cn_cb, err = -ENOMEM);
494 op_data->op_fid1 = sbi->ll_root_fid;
495 op_data->op_mode = 0;
496 op_data->op_capa1 = oc;
497 op_data->op_valid = valid;
499 err = md_getattr(sbi->ll_md_exp, op_data, &request);
502 OBD_FREE_PTR(op_data);
504 CERROR("md_getattr failed for root: rc = %d\n", err);
505 GOTO(out_lock_cn_cb, err);
507 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
508 sbi->ll_md_exp, &lmd);
510 CERROR("failed to understand root inode md: rc = %d\n", err);
511 ptlrpc_req_finished (request);
512 GOTO(out_lock_cn_cb, err);
515 LASSERT(fid_is_sane(&sbi->ll_root_fid));
516 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid, 0), &lmd);
517 md_free_lustre_md(sbi->ll_md_exp, &lmd);
518 ptlrpc_req_finished(request);
520 if (root == NULL || IS_ERR(root)) {
522 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
523 #ifdef CONFIG_FS_POSIX_ACL
525 posix_acl_release(lmd.posix_acl);
526 lmd.posix_acl = NULL;
529 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
531 CERROR("lustre_lite: bad iget4 for root\n");
535 err = ll_close_thread_start(&sbi->ll_lcq);
537 CERROR("cannot start close thread: rc %d\n", err);
541 #ifdef CONFIG_FS_POSIX_ACL
542 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
543 rct_init(&sbi->ll_rct);
544 et_init(&sbi->ll_et);
548 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
549 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
550 KEY_CHECKSUM, sizeof(checksum), &checksum,
554 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
555 KEY_CACHE_SET, sizeof(sbi->ll_cache),
556 &sbi->ll_cache, NULL);
558 sb->s_root = d_make_root(root);
559 if (sb->s_root == NULL) {
560 CERROR("%s: can't make root dentry\n",
561 ll_get_fsname(sb, NULL, 0));
562 GOTO(out_lock_cn_cb, err = -ENOMEM);
565 #ifdef HAVE_DCACHE_LOCK
566 sb->s_root->d_op = &ll_d_root_ops;
568 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
569 d_set_d_op(sb->s_root, &ll_d_root_ops);
570 sb->s_d_op = &ll_d_ops;
573 sbi->ll_sdev_orig = sb->s_dev;
575 /* We set sb->s_dev equal on all lustre clients in order to support
576 * NFS export clustering. NFSD requires that the FSID be the same
578 /* s_dev is also used in lt_compare() to compare two fs, but that is
579 * only a node-local comparison. */
580 uuid = obd_get_uuid(sbi->ll_md_exp);
582 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
594 obd_fid_fini(sbi->ll_dt_exp);
596 obd_disconnect(sbi->ll_dt_exp);
597 sbi->ll_dt_exp = NULL;
598 /* Make sure all OScs are gone, since cl_cache is accessing sbi. */
599 obd_zombie_barrier();
601 obd_fid_fini(sbi->ll_md_exp);
603 obd_disconnect(sbi->ll_md_exp);
604 sbi->ll_md_exp = NULL;
610 lprocfs_unregister_mountpoint(sbi);
614 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
618 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
620 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
621 KEY_MAX_EASIZE, &size, lmmsize, NULL);
623 CERROR("Get max mdsize error rc %d \n", rc);
628 void ll_dump_inode(struct inode *inode)
630 struct ll_d_hlist_node *tmp;
631 int dentry_count = 0;
633 LASSERT(inode != NULL);
635 ll_d_hlist_for_each(tmp, &inode->i_dentry)
638 CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
639 inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
640 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
643 void lustre_dump_dentry(struct dentry *dentry, int recur)
645 struct list_head *tmp;
648 LASSERT(dentry != NULL);
650 list_for_each(tmp, &dentry->d_subdirs)
653 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
654 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
655 dentry->d_name.len, dentry->d_name.name,
656 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
657 dentry->d_parent, dentry->d_inode, d_refcount(dentry),
658 dentry->d_flags, dentry->d_fsdata, subdirs);
659 if (dentry->d_inode != NULL)
660 ll_dump_inode(dentry->d_inode);
665 list_for_each(tmp, &dentry->d_subdirs) {
666 struct dentry *d = list_entry(tmp, struct dentry, d_u.d_child);
667 lustre_dump_dentry(d, recur - 1);
671 void client_common_put_super(struct super_block *sb)
673 struct ll_sb_info *sbi = ll_s2sbi(sb);
676 #ifdef CONFIG_FS_POSIX_ACL
677 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
678 et_fini(&sbi->ll_et);
679 rct_fini(&sbi->ll_rct);
683 ll_close_thread_shutdown(sbi->ll_lcq);
687 cfs_list_del(&sbi->ll_conn_chain);
689 obd_fid_fini(sbi->ll_dt_exp);
690 obd_disconnect(sbi->ll_dt_exp);
691 sbi->ll_dt_exp = NULL;
692 /* wait till all OSCs are gone, since cl_cache is accessing sbi.
694 obd_zombie_barrier();
696 lprocfs_unregister_mountpoint(sbi);
698 obd_fid_fini(sbi->ll_md_exp);
699 obd_disconnect(sbi->ll_md_exp);
700 sbi->ll_md_exp = NULL;
705 void ll_kill_super(struct super_block *sb)
707 struct ll_sb_info *sbi;
712 if (!(sb->s_flags & MS_ACTIVE))
716 /* we need restore s_dev from changed for clustred NFS before put_super
717 * because new kernels have cached s_dev and change sb->s_dev in
718 * put_super not affected real removing devices */
720 sb->s_dev = sbi->ll_sdev_orig;
724 char *ll_read_opt(const char *opt, char *data)
730 CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
731 if (strncmp(opt, data, strlen(opt)))
733 if ((value = strchr(data, '=')) == NULL)
737 OBD_ALLOC(retval, strlen(value) + 1);
739 CERROR("out of memory!\n");
743 memcpy(retval, value, strlen(value)+1);
744 CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
748 static inline int ll_set_opt(const char *opt, char *data, int fl)
750 if (strncmp(opt, data, strlen(opt)) != 0)
756 /* non-client-specific mount options are parsed in lmd_parse */
757 static int ll_options(char *options, int *flags)
760 char *s1 = options, *s2;
766 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
769 CDEBUG(D_SUPER, "next opt=%s\n", s1);
770 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
775 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
780 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
785 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
790 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
795 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
800 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 5, 50, 0)
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. */
806 LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
807 "mount option 'acl'.\n");
810 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
812 LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
813 "mount option 'noacl'.\n");
817 #warning "{no}acl options have been deprecated since 1.8, please remove them"
819 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
824 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
829 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
835 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
840 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
845 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
850 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
855 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
860 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
865 tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW);
870 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
875 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
880 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
885 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
891 s2 = strchr(s1, ',');
899 void ll_lli_init(struct ll_inode_info *lli)
901 lli->lli_inode_magic = LLI_INODE_MAGIC;
903 lli->lli_ioepoch = 0;
904 lli->lli_maxbytes = MAX_LFS_FILESIZE;
905 spin_lock_init(&lli->lli_lock);
906 lli->lli_posix_acl = NULL;
907 lli->lli_remote_perms = NULL;
908 mutex_init(&lli->lli_rmtperm_mutex);
909 /* Do not set lli_fid, it has been initialized already. */
910 fid_zero(&lli->lli_pfid);
911 CFS_INIT_LIST_HEAD(&lli->lli_close_list);
912 CFS_INIT_LIST_HEAD(&lli->lli_oss_capas);
913 cfs_atomic_set(&lli->lli_open_count, 0);
914 lli->lli_mds_capa = NULL;
915 lli->lli_rmtperm_time = 0;
916 lli->lli_pending_och = NULL;
917 lli->lli_mds_read_och = NULL;
918 lli->lli_mds_write_och = NULL;
919 lli->lli_mds_exec_och = NULL;
920 lli->lli_open_fd_read_count = 0;
921 lli->lli_open_fd_write_count = 0;
922 lli->lli_open_fd_exec_count = 0;
923 mutex_init(&lli->lli_och_mutex);
924 spin_lock_init(&lli->lli_agl_lock);
925 lli->lli_has_smd = false;
926 lli->lli_clob = NULL;
928 LASSERT(lli->lli_vfs_inode.i_mode != 0);
929 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
930 mutex_init(&lli->lli_readdir_mutex);
931 lli->lli_opendir_key = NULL;
933 lli->lli_def_acl = NULL;
934 spin_lock_init(&lli->lli_sa_lock);
935 lli->lli_opendir_pid = 0;
937 sema_init(&lli->lli_size_sem, 1);
938 lli->lli_size_sem_owner = NULL;
939 lli->lli_symlink_name = NULL;
940 init_rwsem(&lli->lli_trunc_sem);
941 mutex_init(&lli->lli_write_mutex);
942 init_rwsem(&lli->lli_glimpse_sem);
943 lli->lli_glimpse_time = 0;
944 CFS_INIT_LIST_HEAD(&lli->lli_agl_list);
945 lli->lli_agl_index = 0;
946 lli->lli_async_rc = 0;
948 mutex_init(&lli->lli_layout_mutex);
951 static inline int ll_bdi_register(struct backing_dev_info *bdi)
953 #ifdef HAVE_BDI_REGISTER
954 static atomic_t ll_bdi_num = ATOMIC_INIT(0);
957 bdi->name = "lustre";
959 return bdi_register(bdi, NULL, "lustre-%d",
960 atomic_inc_return(&ll_bdi_num));
966 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
968 struct lustre_profile *lprof = NULL;
969 struct lustre_sb_info *lsi = s2lsi(sb);
970 struct ll_sb_info *sbi;
971 char *dt = NULL, *md = NULL;
972 char *profilenm = get_profile_name(sb);
973 struct config_llog_instance *cfg;
974 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
975 const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
979 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
987 /* client additional sb info */
988 lsi->lsi_llsbi = sbi = ll_init_sbi();
990 cfs_module_put(THIS_MODULE);
995 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
999 err = ll_bdi_init(&lsi->lsi_bdi);
1001 GOTO(out_free, err);
1002 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1003 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1004 err = ll_bdi_register(&lsi->lsi_bdi);
1006 GOTO(out_free, err);
1009 sb->s_bdi = &lsi->lsi_bdi;
1012 /* Generate a string unique to this super, in case some joker tries
1013 to mount the same fs at two mount points.
1014 Use the address of the super itself.*/
1015 cfg->cfg_instance = sb;
1016 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1017 cfg->cfg_callback = class_config_llog_handler;
1018 /* set up client obds */
1019 err = lustre_process_log(sb, profilenm, cfg);
1021 CERROR("Unable to process log: %d\n", err);
1022 GOTO(out_free, err);
1025 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1026 lprof = class_get_profile(profilenm);
1027 if (lprof == NULL) {
1028 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1029 " read from the MGS. Does that filesystem "
1030 "exist?\n", profilenm);
1031 GOTO(out_free, err = -EINVAL);
1033 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1034 lprof->lp_md, lprof->lp_dt);
1036 OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
1038 GOTO(out_free, err = -ENOMEM);
1039 sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
1041 OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
1043 GOTO(out_free, err = -ENOMEM);
1044 sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1046 /* connections, registrations, sb setup */
1047 err = client_common_fill_super(sb, md, dt, mnt);
1051 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1053 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1056 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1057 LCONSOLE_WARN("Mounted %s\n", profilenm);
1061 } /* ll_fill_super */
1064 void lu_context_keys_dump(void);
1066 void ll_put_super(struct super_block *sb)
1068 struct config_llog_instance cfg;
1069 struct obd_device *obd;
1070 struct lustre_sb_info *lsi = s2lsi(sb);
1071 struct ll_sb_info *sbi = ll_s2sbi(sb);
1072 char *profilenm = get_profile_name(sb);
1073 int force = 1, next;
1076 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1078 ll_print_capa_stat(sbi);
1080 cfg.cfg_instance = sb;
1081 lustre_end_log(sb, profilenm, &cfg);
1083 if (sbi->ll_md_exp) {
1084 obd = class_exp2obd(sbi->ll_md_exp);
1086 force = obd->obd_force;
1089 /* We need to set force before the lov_disconnect in
1090 lustre_common_put_super, since l_d cleans up osc's as well. */
1093 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1095 obd->obd_force = force;
1100 /* Only if client_common_fill_super succeeded */
1101 client_common_put_super(sb);
1105 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1106 class_manual_cleanup(obd);
1109 if (sbi->ll_flags & LL_SBI_VERBOSE)
1110 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1113 class_del_profile(profilenm);
1115 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1116 ll_bdi_destroy(&lsi->lsi_bdi);
1117 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1121 lsi->lsi_llsbi = NULL;
1123 lustre_common_put_super(sb);
1125 cl_env_cache_purge(~0);
1127 cfs_module_put(THIS_MODULE);
1130 } /* client_put_super */
1132 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
1134 struct inode *inode = NULL;
1135 /* NOTE: we depend on atomic igrab() -bzzz */
1136 lock_res_and_lock(lock);
1137 if (lock->l_ast_data) {
1138 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
1139 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1140 inode = igrab(lock->l_ast_data);
1142 inode = lock->l_ast_data;
1143 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1144 D_WARNING, lock, "l_ast_data %p is "
1145 "bogus: magic %08x", lock->l_ast_data,
1146 lli->lli_inode_magic);
1150 unlock_res_and_lock(lock);
1154 static int null_if_equal(struct ldlm_lock *lock, void *data)
1156 if (data == lock->l_ast_data) {
1157 lock->l_ast_data = NULL;
1159 if (lock->l_req_mode != lock->l_granted_mode)
1160 LDLM_ERROR(lock,"clearing inode with ungranted lock");
1163 return LDLM_ITER_CONTINUE;
1166 void ll_clear_inode(struct inode *inode)
1168 struct ll_inode_info *lli = ll_i2info(inode);
1169 struct ll_sb_info *sbi = ll_i2sbi(inode);
1172 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1173 inode->i_generation, inode);
1175 if (S_ISDIR(inode->i_mode)) {
1176 /* these should have been cleared in ll_file_release */
1177 LASSERT(lli->lli_opendir_key == NULL);
1178 LASSERT(lli->lli_sai == NULL);
1179 LASSERT(lli->lli_opendir_pid == 0);
1182 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1183 md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
1184 null_if_equal, inode);
1186 LASSERT(!lli->lli_open_fd_write_count);
1187 LASSERT(!lli->lli_open_fd_read_count);
1188 LASSERT(!lli->lli_open_fd_exec_count);
1190 if (lli->lli_mds_write_och)
1191 ll_md_real_close(inode, FMODE_WRITE);
1192 if (lli->lli_mds_exec_och)
1193 ll_md_real_close(inode, FMODE_EXEC);
1194 if (lli->lli_mds_read_och)
1195 ll_md_real_close(inode, FMODE_READ);
1197 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1198 OBD_FREE(lli->lli_symlink_name,
1199 strlen(lli->lli_symlink_name) + 1);
1200 lli->lli_symlink_name = NULL;
1203 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1204 LASSERT(lli->lli_posix_acl == NULL);
1205 if (lli->lli_remote_perms) {
1206 free_rmtperm_hash(lli->lli_remote_perms);
1207 lli->lli_remote_perms = NULL;
1210 #ifdef CONFIG_FS_POSIX_ACL
1211 else if (lli->lli_posix_acl) {
1212 LASSERT(cfs_atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1213 LASSERT(lli->lli_remote_perms == NULL);
1214 posix_acl_release(lli->lli_posix_acl);
1215 lli->lli_posix_acl = NULL;
1218 lli->lli_inode_magic = LLI_INODE_DEAD;
1220 ll_clear_inode_capas(inode);
1221 if (!S_ISDIR(inode->i_mode))
1222 LASSERT(cfs_list_empty(&lli->lli_agl_list));
1225 * XXX This has to be done before lsm is freed below, because
1226 * cl_object still uses inode lsm.
1228 cl_inode_fini(inode);
1229 lli->lli_has_smd = false;
1234 int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
1235 struct md_open_data **mod)
1237 struct lustre_md md;
1238 struct inode *inode = dentry->d_inode;
1239 struct ll_sb_info *sbi = ll_i2sbi(inode);
1240 struct ptlrpc_request *request = NULL;
1244 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1245 LUSTRE_OPC_ANY, NULL);
1246 if (IS_ERR(op_data))
1247 RETURN(PTR_ERR(op_data));
1249 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1252 ptlrpc_req_finished(request);
1253 if (rc == -ENOENT) {
1255 /* Unlinked special device node? Or just a race?
1256 * Pretend we done everything. */
1257 if (!S_ISREG(inode->i_mode) &&
1258 !S_ISDIR(inode->i_mode)) {
1259 ia_valid = op_data->op_attr.ia_valid;
1260 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1261 rc = simple_setattr(dentry, &op_data->op_attr);
1262 op_data->op_attr.ia_valid = ia_valid;
1264 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1265 CERROR("md_setattr fails: rc = %d\n", rc);
1270 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1271 sbi->ll_md_exp, &md);
1273 ptlrpc_req_finished(request);
1277 /* We want to adjust timestamps.
1278 * If there is at least some data in file, we cleared ATTR_SIZE
1279 * to avoid update size, otherwise it is important to do.(SOM case)
1281 ia_valid = op_data->op_attr.ia_valid;
1282 /* Since we set ATTR_*_SET flags above, and already done permission
1283 * check, So don't let inode_change_ok() check it again. */
1284 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1285 rc = simple_setattr(dentry, &op_data->op_attr);
1286 op_data->op_attr.ia_valid = ia_valid;
1288 /* Extract epoch data if obtained. */
1289 op_data->op_handle = md.body->handle;
1290 op_data->op_ioepoch = md.body->ioepoch;
1292 ll_update_inode(inode, &md);
1293 ptlrpc_req_finished(request);
1298 /* Close IO epoch and send Size-on-MDS attribute update. */
1299 static int ll_setattr_done_writing(struct inode *inode,
1300 struct md_op_data *op_data,
1301 struct md_open_data *mod)
1303 struct ll_inode_info *lli = ll_i2info(inode);
1307 LASSERT(op_data != NULL);
1308 if (!S_ISREG(inode->i_mode))
1311 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1312 op_data->op_ioepoch, PFID(&lli->lli_fid));
1314 op_data->op_flags = MF_EPOCH_CLOSE;
1315 ll_done_writing_attr(inode, op_data);
1316 ll_pack_inode2opdata(inode, op_data, NULL);
1318 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1319 if (rc == -EAGAIN) {
1320 /* MDS has instructed us to obtain Size-on-MDS attribute
1321 * from OSTs and send setattr to back to MDS. */
1322 rc = ll_som_update(inode, op_data);
1324 CERROR("inode %lu mdc truncate failed: rc = %d\n",
1330 static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
1332 struct obd_capa *capa;
1335 if (attr->ia_valid & ATTR_SIZE)
1336 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
1338 capa = ll_mdscapa_get(inode);
1340 rc = cl_setattr_ost(inode, attr, capa);
1342 if (attr->ia_valid & ATTR_SIZE)
1343 ll_truncate_free_capa(capa);
1350 #ifndef HAVE_VFS_INODE_NEWSIZE_OK
1352 * inode_newsize_ok - may this inode be truncated to a given size
1353 * @inode: the inode to be truncated
1354 * @offset: the new size to assign to the inode
1355 * @Returns: 0 on success, -ve errno on failure
1357 * inode_newsize_ok will check filesystem limits and ulimits to check that the
1358 * new inode size is within limits. inode_newsize_ok will also send SIGXFSZ
1359 * when necessary. Caller must not proceed with inode size change if failure is
1360 * returned. @inode must be a file (not directory), with appropriate
1361 * permissions to allow truncate (inode_newsize_ok does NOT check these
1364 * inode_newsize_ok must be called with i_mutex held.
1366 int inode_newsize_ok(const struct inode *inode, loff_t offset)
1368 if (inode->i_size < offset) {
1369 unsigned long limit;
1371 limit = rlimit(RLIMIT_FSIZE);
1372 if (limit != RLIM_INFINITY && offset > limit)
1374 if (offset > inode->i_sb->s_maxbytes)
1378 * truncation of in-use swapfiles is disallowed - it would
1379 * cause subsequent swapout to scribble on the now-freed
1382 if (IS_SWAPFILE(inode))
1388 send_sig(SIGXFSZ, current, 0);
1394 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1395 * object(s) determine the file size and mtime. Otherwise, the MDS will
1396 * keep these values until such a time that objects are allocated for it.
1397 * We do the MDS operations first, as it is checking permissions for us.
1398 * We don't to the MDS RPC if there is nothing that we want to store there,
1399 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1400 * going to do an RPC anyways.
1402 * If we are doing a truncate, we will send the mtime and ctime updates
1403 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1404 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1407 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr)
1409 struct lov_stripe_md *lsm;
1410 struct inode *inode = dentry->d_inode;
1411 struct ll_inode_info *lli = ll_i2info(inode);
1412 struct md_op_data *op_data = NULL;
1413 struct md_open_data *mod = NULL;
1414 int ia_valid = attr->ia_valid;
1415 int rc = 0, rc1 = 0;
1418 CDEBUG(D_VFSTRACE, "%s: setattr inode %p/fid:"DFID" from %llu to %llu, "
1419 "valid %x\n", ll_get_fsname(inode->i_sb, NULL, 0), inode,
1420 PFID(&lli->lli_fid), i_size_read(inode), attr->ia_size,
1423 if (ia_valid & ATTR_SIZE) {
1424 /* Check new size against VFS/VM file size limit and rlimit */
1425 rc = inode_newsize_ok(inode, attr->ia_size);
1429 /* The maximum Lustre file size is variable, based on the
1430 * OST maximum object size and number of stripes. This
1431 * needs another check in addition to the VFS check above. */
1432 if (attr->ia_size > ll_file_maxbytes(inode)) {
1433 CDEBUG(D_INODE,"file "DFID" too large %llu > "LPU64"\n",
1434 PFID(&lli->lli_fid), attr->ia_size,
1435 ll_file_maxbytes(inode));
1439 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1442 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1443 if (ia_valid & TIMES_SET_FLAGS) {
1444 if (cfs_curproc_fsuid() != inode->i_uid &&
1445 !cfs_capable(CFS_CAP_FOWNER))
1449 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1450 if (attr->ia_valid & ATTR_CTIME) {
1451 attr->ia_ctime = CFS_CURRENT_TIME;
1452 attr->ia_valid |= ATTR_CTIME_SET;
1454 if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1455 attr->ia_atime = CFS_CURRENT_TIME;
1456 attr->ia_valid |= ATTR_ATIME_SET;
1458 if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1459 attr->ia_mtime = CFS_CURRENT_TIME;
1460 attr->ia_valid |= ATTR_MTIME_SET;
1463 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1464 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1465 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1466 cfs_time_current_sec());
1468 /* If we are changing file size, file content is modified, flag it. */
1469 if (attr->ia_valid & ATTR_SIZE) {
1470 spin_lock(&lli->lli_lock);
1471 lli->lli_flags |= LLIF_DATA_MODIFIED;
1472 spin_unlock(&lli->lli_lock);
1475 /* We always do an MDS RPC, even if we're only changing the size;
1476 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1478 OBD_ALLOC_PTR(op_data);
1479 if (op_data == NULL)
1482 if (!S_ISDIR(inode->i_mode)) {
1483 if (ia_valid & ATTR_SIZE)
1484 inode_dio_write_done(inode);
1485 mutex_unlock(&inode->i_mutex);
1486 down_write(&lli->lli_trunc_sem);
1487 mutex_lock(&inode->i_mutex);
1488 if (ia_valid & ATTR_SIZE)
1489 inode_dio_wait(inode);
1492 /* We need a steady stripe configuration for setattr to avoid
1494 lsm = ccc_inode_lsm_get(inode);
1496 /* NB: ATTR_SIZE will only be set after this point if the size
1497 * resides on the MDS, ie, this file has no objects. */
1499 attr->ia_valid &= ~ATTR_SIZE;
1500 /* can't call ll_setattr_ost() while holding a refcount of lsm */
1501 ccc_inode_lsm_put(inode, lsm);
1503 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1505 /* Open epoch for truncate. */
1506 if (exp_connect_som(ll_i2mdexp(inode)) &&
1507 (ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
1508 op_data->op_flags = MF_EPOCH_OPEN;
1510 rc = ll_md_setattr(dentry, op_data, &mod);
1514 /* RPC to MDT is sent, cancel data modification flag */
1515 if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) {
1516 spin_lock(&lli->lli_lock);
1517 lli->lli_flags &= ~LLIF_DATA_MODIFIED;
1518 spin_unlock(&lli->lli_lock);
1521 ll_ioepoch_open(lli, op_data->op_ioepoch);
1522 if (!S_ISREG(inode->i_mode))
1525 if (ia_valid & ATTR_SIZE)
1526 attr->ia_valid |= ATTR_SIZE;
1527 if (ia_valid & (ATTR_SIZE |
1528 ATTR_ATIME | ATTR_ATIME_SET |
1529 ATTR_MTIME | ATTR_MTIME_SET))
1530 /* For truncate and utimes sending attributes to OSTs, setting
1531 * mtime/atime to the past will be performed under PW [0:EOF]
1532 * extent lock (new_size:EOF for truncate). It may seem
1533 * excessive to send mtime/atime updates to OSTs when not
1534 * setting times to past, but it is necessary due to possible
1535 * time de-synchronization between MDT inode and OST objects */
1536 rc = ll_setattr_ost(inode, attr);
1540 if (op_data->op_ioepoch) {
1541 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1545 ll_finish_md_op_data(op_data);
1547 if (!S_ISDIR(inode->i_mode))
1548 up_write(&lli->lli_trunc_sem);
1550 ll_stats_ops_tally(ll_i2sbi(inode), (ia_valid & ATTR_SIZE) ?
1551 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1556 int ll_setattr(struct dentry *de, struct iattr *attr)
1558 int mode = de->d_inode->i_mode;
1560 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1561 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1562 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1564 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1565 (ATTR_SIZE|ATTR_MODE)) &&
1566 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1567 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1568 !(attr->ia_mode & S_ISGID))))
1569 attr->ia_valid |= ATTR_FORCE;
1571 if ((mode & S_ISUID) &&
1572 !(attr->ia_mode & S_ISUID) &&
1573 !(attr->ia_valid & ATTR_KILL_SUID))
1574 attr->ia_valid |= ATTR_KILL_SUID;
1576 if (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1577 !(attr->ia_mode & S_ISGID) &&
1578 !(attr->ia_valid & ATTR_KILL_SGID))
1579 attr->ia_valid |= ATTR_KILL_SGID;
1581 return ll_setattr_raw(de, attr);
1584 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1585 __u64 max_age, __u32 flags)
1587 struct ll_sb_info *sbi = ll_s2sbi(sb);
1588 struct obd_statfs obd_osfs;
1592 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1594 CERROR("md_statfs fails: rc = %d\n", rc);
1598 osfs->os_type = sb->s_magic;
1600 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1601 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1603 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1604 flags |= OBD_STATFS_NODELAY;
1606 rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1608 CERROR("obd_statfs fails: rc = %d\n", rc);
1612 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1613 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1616 osfs->os_bsize = obd_osfs.os_bsize;
1617 osfs->os_blocks = obd_osfs.os_blocks;
1618 osfs->os_bfree = obd_osfs.os_bfree;
1619 osfs->os_bavail = obd_osfs.os_bavail;
1621 /* If we don't have as many objects free on the OST as inodes
1622 * on the MDS, we reduce the total number of inodes to
1623 * compensate, so that the "inodes in use" number is correct.
1625 if (obd_osfs.os_ffree < osfs->os_ffree) {
1626 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1628 osfs->os_ffree = obd_osfs.os_ffree;
1633 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1635 struct super_block *sb = de->d_sb;
1636 struct obd_statfs osfs;
1639 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1640 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1642 /* Some amount of caching on the client is allowed */
1643 rc = ll_statfs_internal(sb, &osfs,
1644 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1649 statfs_unpack(sfs, &osfs);
1651 /* We need to downshift for all 32-bit kernels, because we can't
1652 * tell if the kernel is being called via sys_statfs64() or not.
1653 * Stop before overflowing f_bsize - in which case it is better
1654 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1655 if (sizeof(long) < 8) {
1656 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1659 osfs.os_blocks >>= 1;
1660 osfs.os_bfree >>= 1;
1661 osfs.os_bavail >>= 1;
1665 sfs->f_blocks = osfs.os_blocks;
1666 sfs->f_bfree = osfs.os_bfree;
1667 sfs->f_bavail = osfs.os_bavail;
1672 void ll_inode_size_lock(struct inode *inode)
1674 struct ll_inode_info *lli;
1676 LASSERT(!S_ISDIR(inode->i_mode));
1678 lli = ll_i2info(inode);
1679 LASSERT(lli->lli_size_sem_owner != current);
1680 down(&lli->lli_size_sem);
1681 LASSERT(lli->lli_size_sem_owner == NULL);
1682 lli->lli_size_sem_owner = current;
1685 void ll_inode_size_unlock(struct inode *inode)
1687 struct ll_inode_info *lli;
1689 lli = ll_i2info(inode);
1690 LASSERT(lli->lli_size_sem_owner == current);
1691 lli->lli_size_sem_owner = NULL;
1692 up(&lli->lli_size_sem);
1695 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1697 struct ll_inode_info *lli = ll_i2info(inode);
1698 struct mdt_body *body = md->body;
1699 struct lov_stripe_md *lsm = md->lsm;
1700 struct ll_sb_info *sbi = ll_i2sbi(inode);
1702 LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1704 LASSERT(S_ISREG(inode->i_mode));
1705 CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
1706 lsm, inode->i_ino, inode->i_generation, inode);
1707 /* cl_file_inode_init must go before lli_has_smd or a race
1708 * is possible where client thinks the file has stripes,
1709 * but lov raid0 is not setup yet and parallel e.g.
1710 * glimpse would try to use uninitialized lov */
1711 if (cl_file_inode_init(inode, md) == 0)
1712 lli->lli_has_smd = true;
1714 lli->lli_maxbytes = lsm->lsm_maxbytes;
1715 if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
1716 lli->lli_maxbytes = MAX_LFS_FILESIZE;
1717 if (md->lsm != NULL)
1718 obd_free_memmd(ll_i2dtexp(inode), &md->lsm);
1721 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1722 if (body->valid & OBD_MD_FLRMTPERM)
1723 ll_update_remote_perm(inode, md->remote_perm);
1725 #ifdef CONFIG_FS_POSIX_ACL
1726 else if (body->valid & OBD_MD_FLACL) {
1727 spin_lock(&lli->lli_lock);
1728 if (lli->lli_posix_acl)
1729 posix_acl_release(lli->lli_posix_acl);
1730 lli->lli_posix_acl = md->posix_acl;
1731 spin_unlock(&lli->lli_lock);
1734 inode->i_ino = cl_fid_build_ino(&body->fid1, 0);
1735 inode->i_generation = cl_fid_build_gen(&body->fid1);
1737 if (body->valid & OBD_MD_FLATIME) {
1738 if (body->atime > LTIME_S(inode->i_atime))
1739 LTIME_S(inode->i_atime) = body->atime;
1740 lli->lli_lvb.lvb_atime = body->atime;
1742 if (body->valid & OBD_MD_FLMTIME) {
1743 if (body->mtime > LTIME_S(inode->i_mtime)) {
1744 CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1745 "to "LPU64"\n", inode->i_ino,
1746 LTIME_S(inode->i_mtime), body->mtime);
1747 LTIME_S(inode->i_mtime) = body->mtime;
1749 lli->lli_lvb.lvb_mtime = body->mtime;
1751 if (body->valid & OBD_MD_FLCTIME) {
1752 if (body->ctime > LTIME_S(inode->i_ctime))
1753 LTIME_S(inode->i_ctime) = body->ctime;
1754 lli->lli_lvb.lvb_ctime = body->ctime;
1756 if (body->valid & OBD_MD_FLMODE)
1757 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
1758 if (body->valid & OBD_MD_FLTYPE)
1759 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
1760 LASSERT(inode->i_mode != 0);
1761 if (S_ISREG(inode->i_mode)) {
1762 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
1764 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1766 if (body->valid & OBD_MD_FLUID)
1767 inode->i_uid = body->uid;
1768 if (body->valid & OBD_MD_FLGID)
1769 inode->i_gid = body->gid;
1770 if (body->valid & OBD_MD_FLFLAGS)
1771 inode->i_flags = ll_ext_to_inode_flags(body->flags);
1772 if (body->valid & OBD_MD_FLNLINK)
1773 set_nlink(inode, body->nlink);
1774 if (body->valid & OBD_MD_FLRDEV)
1775 inode->i_rdev = old_decode_dev(body->rdev);
1777 if (body->valid & OBD_MD_FLID) {
1778 /* FID shouldn't be changed! */
1779 if (fid_is_sane(&lli->lli_fid)) {
1780 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
1781 "Trying to change FID "DFID
1782 " to the "DFID", inode %lu/%u(%p)\n",
1783 PFID(&lli->lli_fid), PFID(&body->fid1),
1784 inode->i_ino, inode->i_generation, inode);
1786 lli->lli_fid = body->fid1;
1789 LASSERT(fid_seq(&lli->lli_fid) != 0);
1791 if (body->valid & OBD_MD_FLSIZE) {
1792 if (exp_connect_som(ll_i2mdexp(inode)) &&
1793 S_ISREG(inode->i_mode) && lli->lli_has_smd) {
1794 struct lustre_handle lockh;
1797 /* As it is possible a blocking ast has been processed
1798 * by this time, we need to check there is an UPDATE
1799 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
1801 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
1802 &lockh, LDLM_FL_CBPENDING);
1804 if (lli->lli_flags & (LLIF_DONE_WRITING |
1805 LLIF_EPOCH_PENDING |
1807 CERROR("ino %lu flags %u still has "
1808 "size authority! do not trust "
1809 "the size got from MDS\n",
1810 inode->i_ino, lli->lli_flags);
1812 /* Use old size assignment to avoid
1813 * deadlock bz14138 & bz14326 */
1814 i_size_write(inode, body->size);
1815 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
1817 ldlm_lock_decref(&lockh, mode);
1820 /* Use old size assignment to avoid
1821 * deadlock bz14138 & bz14326 */
1822 i_size_write(inode, body->size);
1824 CDEBUG(D_VFSTRACE, "inode=%lu, updating i_size %llu\n",
1825 inode->i_ino, (unsigned long long)body->size);
1828 if (body->valid & OBD_MD_FLBLOCKS)
1829 inode->i_blocks = body->blocks;
1832 if (body->valid & OBD_MD_FLMDSCAPA) {
1833 LASSERT(md->mds_capa);
1834 ll_add_capa(inode, md->mds_capa);
1836 if (body->valid & OBD_MD_FLOSSCAPA) {
1837 LASSERT(md->oss_capa);
1838 ll_add_capa(inode, md->oss_capa);
1842 void ll_read_inode2(struct inode *inode, void *opaque)
1844 struct lustre_md *md = opaque;
1845 struct ll_inode_info *lli = ll_i2info(inode);
1848 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1849 PFID(&lli->lli_fid), inode);
1851 LASSERT(!lli->lli_has_smd);
1853 /* Core attributes from the MDS first. This is a new inode, and
1854 * the VFS doesn't zero times in the core inode so we have to do
1855 * it ourselves. They will be overwritten by either MDS or OST
1856 * attributes - we just need to make sure they aren't newer. */
1857 LTIME_S(inode->i_mtime) = 0;
1858 LTIME_S(inode->i_atime) = 0;
1859 LTIME_S(inode->i_ctime) = 0;
1861 ll_update_inode(inode, md);
1863 /* OIDEBUG(inode); */
1865 /* initializing backing dev info. */
1866 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
1869 if (S_ISREG(inode->i_mode)) {
1870 struct ll_sb_info *sbi = ll_i2sbi(inode);
1871 inode->i_op = &ll_file_inode_operations;
1872 inode->i_fop = sbi->ll_fop;
1873 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
1875 } else if (S_ISDIR(inode->i_mode)) {
1876 inode->i_op = &ll_dir_inode_operations;
1877 inode->i_fop = &ll_dir_operations;
1879 } else if (S_ISLNK(inode->i_mode)) {
1880 inode->i_op = &ll_fast_symlink_inode_operations;
1883 inode->i_op = &ll_special_inode_operations;
1885 init_special_inode(inode, inode->i_mode,
1892 void ll_delete_inode(struct inode *inode)
1894 struct cl_inode_info *lli = cl_i2info(inode);
1897 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
1898 /* discard all dirty pages before truncating them, required by
1899 * osc_extent implementation at LU-1030. */
1900 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_DISCARD);
1902 truncate_inode_pages(&inode->i_data, 0);
1904 /* Workaround for LU-118 */
1905 if (inode->i_data.nrpages) {
1906 TREE_READ_LOCK_IRQ(&inode->i_data);
1907 TREE_READ_UNLOCK_IRQ(&inode->i_data);
1908 LASSERTF(inode->i_data.nrpages == 0,
1909 "inode=%lu/%u(%p) nrpages=%lu, see "
1910 "http://jira.whamcloud.com/browse/LU-118\n",
1911 inode->i_ino, inode->i_generation, inode,
1912 inode->i_data.nrpages);
1914 /* Workaround end */
1916 #ifdef HAVE_SBOPS_EVICT_INODE
1917 ll_clear_inode(inode);
1924 int ll_iocontrol(struct inode *inode, struct file *file,
1925 unsigned int cmd, unsigned long arg)
1927 struct ll_sb_info *sbi = ll_i2sbi(inode);
1928 struct ptlrpc_request *req = NULL;
1933 case FSFILT_IOC_GETFLAGS: {
1934 struct mdt_body *body;
1935 struct md_op_data *op_data;
1937 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
1938 0, 0, LUSTRE_OPC_ANY,
1940 if (IS_ERR(op_data))
1941 RETURN(PTR_ERR(op_data));
1943 op_data->op_valid = OBD_MD_FLFLAGS;
1944 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
1945 ll_finish_md_op_data(op_data);
1947 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1951 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1953 flags = body->flags;
1955 ptlrpc_req_finished(req);
1957 RETURN(put_user(flags, (int *)arg));
1959 case FSFILT_IOC_SETFLAGS: {
1960 struct lov_stripe_md *lsm;
1961 struct obd_info oinfo = { { { 0 } } };
1962 struct md_op_data *op_data;
1964 if (get_user(flags, (int *)arg))
1967 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
1968 LUSTRE_OPC_ANY, NULL);
1969 if (IS_ERR(op_data))
1970 RETURN(PTR_ERR(op_data));
1972 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
1973 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
1974 rc = md_setattr(sbi->ll_md_exp, op_data,
1975 NULL, 0, NULL, 0, &req, NULL);
1976 ll_finish_md_op_data(op_data);
1977 ptlrpc_req_finished(req);
1981 inode->i_flags = ll_ext_to_inode_flags(flags);
1983 lsm = ccc_inode_lsm_get(inode);
1987 OBDO_ALLOC(oinfo.oi_oa);
1989 ccc_inode_lsm_put(inode, lsm);
1993 oinfo.oi_oa->o_id = lsm->lsm_object_id;
1994 oinfo.oi_oa->o_seq = lsm->lsm_object_seq;
1995 oinfo.oi_oa->o_flags = flags;
1996 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
1998 oinfo.oi_capa = ll_mdscapa_get(inode);
1999 obdo_set_parent_fid(oinfo.oi_oa, &ll_i2info(inode)->lli_fid);
2000 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
2001 capa_put(oinfo.oi_capa);
2002 OBDO_FREE(oinfo.oi_oa);
2003 ccc_inode_lsm_put(inode, lsm);
2005 if (rc && rc != -EPERM && rc != -EACCES)
2006 CERROR("osc_setattr_async fails: rc = %d\n", rc);
2017 int ll_flush_ctx(struct inode *inode)
2019 struct ll_sb_info *sbi = ll_i2sbi(inode);
2021 CDEBUG(D_SEC, "flush context for user %d\n", cfs_curproc_uid());
2023 obd_set_info_async(NULL, sbi->ll_md_exp,
2024 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2026 obd_set_info_async(NULL, sbi->ll_dt_exp,
2027 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2032 /* umount -f client means force down, don't save state */
2033 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
2034 void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
2036 struct super_block *sb = vfsmnt->mnt_sb;
2038 void ll_umount_begin(struct super_block *sb)
2041 struct ll_sb_info *sbi = ll_s2sbi(sb);
2042 struct obd_device *obd;
2043 struct obd_ioctl_data *ioc_data;
2046 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
2047 if (!(flags & MNT_FORCE)) {
2053 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2054 sb->s_count, atomic_read(&sb->s_active));
2056 obd = class_exp2obd(sbi->ll_md_exp);
2058 CERROR("Invalid MDC connection handle "LPX64"\n",
2059 sbi->ll_md_exp->exp_handle.h_cookie);
2065 obd = class_exp2obd(sbi->ll_dt_exp);
2067 CERROR("Invalid LOV connection handle "LPX64"\n",
2068 sbi->ll_dt_exp->exp_handle.h_cookie);
2074 OBD_ALLOC_PTR(ioc_data);
2076 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2077 sizeof ioc_data, ioc_data, NULL);
2079 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2080 sizeof ioc_data, ioc_data, NULL);
2082 OBD_FREE_PTR(ioc_data);
2086 /* Really, we'd like to wait until there are no requests outstanding,
2087 * and then continue. For now, we just invalidate the requests,
2088 * schedule() and sleep one second if needed, and hope.
2091 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
2092 if (atomic_read(&vfsmnt->mnt_count) > 2) {
2093 cfs_schedule_timeout_and_set_state(CFS_TASK_INTERRUPTIBLE,
2094 cfs_time_seconds(1));
2095 if (atomic_read(&vfsmnt->mnt_count) > 2)
2096 LCONSOLE_WARN("Mount still busy with %d refs! You "
2097 "may try to umount it a bit later\n",
2098 atomic_read(&vfsmnt->mnt_count));
2105 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2107 struct ll_sb_info *sbi = ll_s2sbi(sb);
2108 char *profilenm = get_profile_name(sb);
2112 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2113 read_only = *flags & MS_RDONLY;
2114 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2115 sizeof(KEY_READ_ONLY),
2116 KEY_READ_ONLY, sizeof(read_only),
2119 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2120 profilenm, read_only ?
2121 "read-only" : "read-write", err);
2126 sb->s_flags |= MS_RDONLY;
2128 sb->s_flags &= ~MS_RDONLY;
2130 if (sbi->ll_flags & LL_SBI_VERBOSE)
2131 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2132 read_only ? "read-only" : "read-write");
2137 int ll_prep_inode(struct inode **inode,
2138 struct ptlrpc_request *req,
2139 struct super_block *sb)
2141 struct ll_sb_info *sbi = NULL;
2142 struct lustre_md md;
2147 LASSERT(*inode || sb);
2148 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2149 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2150 sbi->ll_md_exp, &md);
2155 ll_update_inode(*inode, &md);
2157 LASSERT(sb != NULL);
2160 * At this point server returns to client's same fid as client
2161 * generated for creating. So using ->fid1 is okay here.
2163 LASSERT(fid_is_sane(&md.body->fid1));
2165 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1, 0), &md);
2166 if (*inode == NULL || IS_ERR(*inode)) {
2168 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2169 #ifdef CONFIG_FS_POSIX_ACL
2171 posix_acl_release(md.posix_acl);
2172 md.posix_acl = NULL;
2175 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2177 CERROR("new_inode -fatal: rc %d\n", rc);
2182 /* sanity check for LAYOUT lock. */
2183 ibits = MDS_INODELOCK_LAYOUT;
2184 if (S_ISREG(md.body->mode) && sbi->ll_flags & LL_SBI_LAYOUT_LOCK &&
2185 md.lsm != NULL && !ll_have_md_lock(*inode, &ibits, LCK_MINMODE)) {
2186 CERROR("%s: inode "DFID" (%p) layout lock not granted.\n",
2187 ll_get_fsname(sb, NULL, 0),
2188 PFID(ll_inode2fid(*inode)), *inode);
2192 md_free_lustre_md(sbi->ll_md_exp, &md);
2196 int ll_obd_statfs(struct inode *inode, void *arg)
2198 struct ll_sb_info *sbi = NULL;
2199 struct obd_export *exp;
2201 struct obd_ioctl_data *data = NULL;
2206 if (!inode || !(sbi = ll_i2sbi(inode)))
2207 GOTO(out_statfs, rc = -EINVAL);
2209 rc = obd_ioctl_getdata(&buf, &len, arg);
2211 GOTO(out_statfs, rc);
2214 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2215 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2216 GOTO(out_statfs, rc = -EINVAL);
2218 if (data->ioc_inllen1 != sizeof(__u32) ||
2219 data->ioc_inllen2 != sizeof(__u32) ||
2220 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2221 data->ioc_plen2 != sizeof(struct obd_uuid))
2222 GOTO(out_statfs, rc = -EINVAL);
2224 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2225 if (type & LL_STATFS_LMV)
2226 exp = sbi->ll_md_exp;
2227 else if (type & LL_STATFS_LOV)
2228 exp = sbi->ll_dt_exp;
2230 GOTO(out_statfs, rc = -ENODEV);
2232 flags = (type & LL_STATFS_NODELAY) ? OBD_STATFS_NODELAY : 0;
2233 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, &flags);
2235 GOTO(out_statfs, rc);
2238 obd_ioctl_freedata(buf, len);
2242 int ll_process_config(struct lustre_cfg *lcfg)
2246 struct lprocfs_static_vars lvars;
2250 lprocfs_llite_init_vars(&lvars);
2252 /* The instance name contains the sb: lustre-client-aacfe000 */
2253 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2254 if (!ptr || !*(++ptr))
2256 if (sscanf(ptr, "%lx", &x) != 1)
2259 /* This better be a real Lustre superblock! */
2260 LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2262 /* Note we have not called client_common_fill_super yet, so
2263 proc fns must be able to handle that! */
2264 rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
2271 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2272 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2273 struct inode *i1, struct inode *i2,
2274 const char *name, int namelen,
2275 int mode, __u32 opc, void *data)
2277 LASSERT(i1 != NULL);
2279 if (namelen > ll_i2sbi(i1)->ll_namelen)
2280 return ERR_PTR(-ENAMETOOLONG);
2282 if (op_data == NULL)
2283 OBD_ALLOC_PTR(op_data);
2285 if (op_data == NULL)
2286 return ERR_PTR(-ENOMEM);
2288 ll_i2gids(op_data->op_suppgids, i1, i2);
2289 op_data->op_fid1 = *ll_inode2fid(i1);
2290 op_data->op_capa1 = ll_mdscapa_get(i1);
2293 op_data->op_fid2 = *ll_inode2fid(i2);
2294 op_data->op_capa2 = ll_mdscapa_get(i2);
2296 fid_zero(&op_data->op_fid2);
2297 op_data->op_capa2 = NULL;
2300 op_data->op_name = name;
2301 op_data->op_namelen = namelen;
2302 op_data->op_mode = mode;
2303 op_data->op_mod_time = cfs_time_current_sec();
2304 op_data->op_fsuid = cfs_curproc_fsuid();
2305 op_data->op_fsgid = cfs_curproc_fsgid();
2306 op_data->op_cap = cfs_curproc_cap_pack();
2307 op_data->op_bias = MDS_CHECK_SPLIT;
2308 op_data->op_opc = opc;
2309 op_data->op_mds = 0;
2310 op_data->op_data = data;
2312 /* If the file is being opened after mknod() (normally due to NFS)
2313 * try to use the default stripe data from parent directory for
2314 * allocating OST objects. Try to pass the parent FID to MDS. */
2315 if (opc == LUSTRE_OPC_CREATE && i1 == i2 && S_ISREG(i2->i_mode) &&
2316 !ll_i2info(i2)->lli_has_smd) {
2317 struct ll_inode_info *lli = ll_i2info(i2);
2319 spin_lock(&lli->lli_lock);
2320 if (likely(!lli->lli_has_smd && !fid_is_zero(&lli->lli_pfid)))
2321 op_data->op_fid1 = lli->lli_pfid;
2322 spin_unlock(&lli->lli_lock);
2323 /** We ignore parent's capability temporary. */
2326 /* When called by ll_setattr_raw, file is i1. */
2327 if (LLIF_DATA_MODIFIED & ll_i2info(i1)->lli_flags)
2328 op_data->op_bias |= MDS_DATA_MODIFIED;
2333 void ll_finish_md_op_data(struct md_op_data *op_data)
2335 capa_put(op_data->op_capa1);
2336 capa_put(op_data->op_capa2);
2337 OBD_FREE_PTR(op_data);
2340 #ifdef HAVE_SUPEROPS_USE_DENTRY
2341 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2343 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2346 struct ll_sb_info *sbi;
2348 #ifdef HAVE_SUPEROPS_USE_DENTRY
2349 LASSERT((seq != NULL) && (dentry != NULL));
2350 sbi = ll_s2sbi(dentry->d_sb);
2352 LASSERT((seq != NULL) && (vfs != NULL));
2353 sbi = ll_s2sbi(vfs->mnt_sb);
2356 if (sbi->ll_flags & LL_SBI_NOLCK)
2357 seq_puts(seq, ",nolock");
2359 if (sbi->ll_flags & LL_SBI_FLOCK)
2360 seq_puts(seq, ",flock");
2362 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2363 seq_puts(seq, ",localflock");
2365 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2366 seq_puts(seq, ",user_xattr");
2368 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2369 seq_puts(seq, ",lazystatfs");
2371 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2372 seq_puts(seq, ",user_fid2path");
2378 * Get obd name by cmd, and copy out to user space
2380 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2382 struct ll_sb_info *sbi = ll_i2sbi(inode);
2383 struct obd_device *obd;
2386 if (cmd == OBD_IOC_GETDTNAME)
2387 obd = class_exp2obd(sbi->ll_dt_exp);
2388 else if (cmd == OBD_IOC_GETMDNAME)
2389 obd = class_exp2obd(sbi->ll_md_exp);
2396 if (cfs_copy_to_user((void *)arg, obd->obd_name,
2397 strlen(obd->obd_name) + 1))
2404 * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
2405 * fsname will be returned in this buffer; otherwise, a static buffer will be
2406 * used to store the fsname and returned to caller.
2408 char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
2410 static char fsname_static[MTI_NAME_MAXLEN];
2411 struct lustre_sb_info *lsi = s2lsi(sb);
2416 /* this means the caller wants to use static buffer
2417 * and it doesn't care about race. Usually this is
2418 * in error reporting path */
2419 buf = fsname_static;
2420 buflen = sizeof(fsname_static);
2423 len = strlen(lsi->lsi_lmd->lmd_profile);
2424 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
2425 if (ptr && (strcmp(ptr, "-client") == 0))
2428 if (unlikely(len >= buflen))
2430 strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
2436 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2440 #ifdef HAVE_FS_STRUCT_USE_PATH
2444 p.mnt = current->fs->root.mnt;
2446 path = d_path(&p, buf, bufsize);
2449 path = d_path(dentry, current->fs->rootmnt, buf, bufsize);
2455 void ll_dirty_page_discard_warn(cfs_page_t *page, int ioret)
2457 char *buf, *path = NULL;
2458 struct dentry *dentry = NULL;
2459 struct ccc_object *obj = cl_inode2ccc(page->mapping->host);
2461 /* this can be called inside spin lock so use GFP_ATOMIC. */
2462 buf = (char *)__get_free_page(GFP_ATOMIC);
2464 dentry = d_find_alias(page->mapping->host);
2466 path = ll_d_path(dentry, buf, PAGE_SIZE);
2469 CWARN("%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2470 "(rc %d)\n", ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
2471 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2472 PFID(&obj->cob_header.coh_lu.loh_fid),
2473 (path && !IS_ERR(path)) ? path : "", ioret);
2479 free_page((unsigned long)buf);