1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Lustre Light Super operations
6 * Copyright (c) 2002-2005 Cluster File Systems, Inc.
8 * This file is part of Lustre, http://www.lustre.org.
10 * Lustre is free software; you can redistribute it and/or
11 * modify it under the terms of version 2 of the GNU General Public
12 * License as published by the Free Software Foundation.
14 * Lustre is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with Lustre; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #define DEBUG_SUBSYSTEM S_LLITE
26 #include <linux/module.h>
27 #include <linux/types.h>
28 #include <linux/random.h>
29 #include <linux/version.h>
31 #include <lustre_lite.h>
32 #include <lustre_ha.h>
33 #include <lustre_dlm.h>
34 #include <lprocfs_status.h>
35 #include <lustre_disk.h>
36 #include <lustre_param.h>
37 #include <lustre_log.h>
38 #include <obd_cksum.h>
39 #include <lustre_cache.h>
40 #include "llite_internal.h"
42 cfs_mem_cache_t *ll_file_data_slab;
44 LIST_HEAD(ll_super_blocks);
45 spinlock_t ll_sb_lock = SPIN_LOCK_UNLOCKED;
47 extern struct address_space_operations ll_aops;
48 extern struct address_space_operations ll_dir_aops;
51 #define log2(n) ffz(~(n))
55 static struct ll_sb_info *ll_init_sbi(void)
57 struct ll_sb_info *sbi = NULL;
62 OBD_ALLOC(sbi, sizeof(*sbi));
66 spin_lock_init(&sbi->ll_lock);
67 spin_lock_init(&sbi->ll_lco.lco_lock);
68 spin_lock_init(&sbi->ll_pp_extent_lock);
69 spin_lock_init(&sbi->ll_process_lock);
70 sbi->ll_rw_stats_on = 0;
71 INIT_LIST_HEAD(&sbi->ll_pglist);
72 if (num_physpages >> (20 - CFS_PAGE_SHIFT) < 512)
73 sbi->ll_async_page_max = num_physpages / 2;
75 sbi->ll_async_page_max = (num_physpages / 4) * 3;
76 sbi->ll_ra_info.ra_max_pages = min(num_physpages / 8,
77 SBI_DEFAULT_READAHEAD_MAX);
78 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
79 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
80 sbi->ll_contention_time = SBI_DEFAULT_CONTENTION_SECONDS;
81 sbi->ll_lockless_truncate_enable = SBI_DEFAULT_LOCKLESS_TRUNCATE_ENABLE;
82 INIT_LIST_HEAD(&sbi->ll_conn_chain);
83 INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
85 ll_generate_random_uuid(uuid);
86 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
87 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
89 spin_lock(&ll_sb_lock);
90 list_add_tail(&sbi->ll_list, &ll_super_blocks);
91 spin_unlock(&ll_sb_lock);
93 #ifdef ENABLE_LLITE_CHECKSUM
94 sbi->ll_flags |= LL_SBI_CHECKSUM;
97 #ifdef HAVE_LRU_RESIZE_SUPPORT
98 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
101 #ifdef HAVE_EXPORT___IGET
102 INIT_LIST_HEAD(&sbi->ll_deathrow);
103 spin_lock_init(&sbi->ll_deathrow_lock);
105 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
106 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_r_hist.oh_lock);
107 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_w_hist.oh_lock);
110 /* metadata statahead is enabled by default */
111 sbi->ll_sa_max = LL_SA_RPC_DEF;
116 void ll_free_sbi(struct super_block *sb)
118 struct ll_sb_info *sbi = ll_s2sbi(sb);
122 spin_lock(&ll_sb_lock);
123 list_del(&sbi->ll_list);
124 spin_unlock(&ll_sb_lock);
125 OBD_FREE(sbi, sizeof(*sbi));
130 static struct dentry_operations ll_d_root_ops = {
131 #ifdef DCACHE_LUSTRE_INVALID
132 .d_compare = ll_dcompare,
136 /* Initialize the default and maximum LOV EA and cookie sizes. This allows
137 * us to make MDS RPCs with large enough reply buffers to hold the
138 * maximum-sized (= maximum striped) EA and cookie without having to
139 * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
140 static int ll_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
142 struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC };
143 __u32 valsize = sizeof(struct lov_desc);
144 int rc, easize, def_easize, cookiesize;
145 struct lov_desc desc;
149 rc = obd_get_info(dt_exp, strlen(KEY_LOVDESC) + 1, KEY_LOVDESC,
154 stripes = min(desc.ld_tgt_count, (__u32)LOV_MAX_STRIPE_COUNT);
155 lsm.lsm_stripe_count = stripes;
156 easize = obd_size_diskmd(dt_exp, &lsm);
158 lsm.lsm_stripe_count = desc.ld_default_stripe_count;
159 def_easize = obd_size_diskmd(dt_exp, &lsm);
161 cookiesize = stripes * sizeof(struct llog_cookie);
163 CDEBUG(D_HA, "updating max_mdsize/max_cookiesize: %d/%d\n",
166 rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize);
170 static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
172 struct inode *root = 0;
173 struct ll_sb_info *sbi = ll_s2sbi(sb);
174 struct obd_device *obd;
175 struct lu_fid rootfid;
176 struct obd_capa *oc = NULL;
177 struct obd_statfs osfs;
178 struct ptlrpc_request *request = NULL;
179 struct lustre_handle dt_conn = {0, };
180 struct lustre_handle md_conn = {0, };
181 struct obd_connect_data *data = NULL;
182 struct lustre_md lmd;
184 int size, err, checksum;
187 obd = class_name2obd(md);
189 CERROR("MD %s: not setup or attached\n", md);
197 if (proc_lustre_fs_root) {
198 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
201 CERROR("could not register mount in /proc/fs/lustre\n");
204 /* indicate the features supported by this client */
205 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
206 OBD_CONNECT_JOIN | OBD_CONNECT_ATTRFID |
207 OBD_CONNECT_VERSION | OBD_CONNECT_MDS_CAPA |
208 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_CANCELSET|
211 #ifdef HAVE_LRU_RESIZE_SUPPORT
212 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
213 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
215 #ifdef CONFIG_FS_POSIX_ACL
216 data->ocd_connect_flags |= OBD_CONNECT_ACL;
218 data->ocd_ibits_known = MDS_INODELOCK_FULL;
219 data->ocd_version = LUSTRE_VERSION_CODE;
221 if (sb->s_flags & MS_RDONLY)
222 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
223 if (sbi->ll_flags & LL_SBI_USER_XATTR)
224 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
226 #ifdef HAVE_MS_FLOCK_LOCK
227 /* force vfs to use lustre handler for flock() calls - bug 10743 */
228 sb->s_flags |= MS_FLOCK_LOCK;
231 if (sbi->ll_flags & LL_SBI_FLOCK)
232 sbi->ll_fop = &ll_file_operations_flock;
233 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
234 sbi->ll_fop = &ll_file_operations;
236 sbi->ll_fop = &ll_file_operations_noflock;
239 data->ocd_connect_flags |= OBD_CONNECT_REAL;
240 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
241 data->ocd_connect_flags &= ~OBD_CONNECT_LCL_CLIENT;
242 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT;
244 data->ocd_connect_flags &= ~OBD_CONNECT_RMT_CLIENT;
245 data->ocd_connect_flags |= OBD_CONNECT_LCL_CLIENT;
248 err = obd_connect(NULL, &md_conn, obd, &sbi->ll_sb_uuid, data, NULL);
250 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
251 "recovery, of which this client is not a "
252 "part. Please wait for recovery to complete,"
253 " abort, or time out.\n", md);
256 CERROR("cannot connect to %s: rc = %d\n", md, err);
259 sbi->ll_md_exp = class_conn2export(&md_conn);
261 err = obd_fid_init(sbi->ll_md_exp);
263 CERROR("Can't init metadata layer FID infrastructure, "
268 err = obd_statfs(obd, &osfs, cfs_time_current_64() - HZ, 0);
270 GOTO(out_md_fid, err);
272 size = sizeof(*data);
273 err = obd_get_info(sbi->ll_md_exp, strlen(KEY_CONN_DATA),
274 KEY_CONN_DATA, &size, data);
276 CERROR("Get connect data failed: %d \n", err);
280 LASSERT(osfs.os_bsize);
281 sb->s_blocksize = osfs.os_bsize;
282 sb->s_blocksize_bits = log2(osfs.os_bsize);
283 sb->s_magic = LL_SUPER_MAGIC;
285 /* for bug 11559. in $LINUX/fs/read_write.c, function do_sendfile():
286 * retval = in_file->f_op->sendfile(...);
288 * retval = -EOVERFLOW;
290 * it will check if *ppos is greater than max. However, max equals to
291 * s_maxbytes, which is a negative integer in a x86_64 box since loff_t
292 * has been defined as a signed long long ineger in linux kernel. */
293 #if BITS_PER_LONG == 64
294 sb->s_maxbytes = PAGE_CACHE_MAXBYTES >> 1;
296 sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
298 sbi->ll_namelen = osfs.os_namelen;
299 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
301 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
302 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
303 LCONSOLE_INFO("Disabling user_xattr feature because "
304 "it is not supported on the server\n");
305 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
308 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
310 sb->s_flags |= MS_POSIXACL;
312 sbi->ll_flags |= LL_SBI_ACL;
314 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
316 sb->s_flags &= ~MS_POSIXACL;
318 sbi->ll_flags &= ~LL_SBI_ACL;
321 if (data->ocd_connect_flags & OBD_CONNECT_JOIN)
322 sbi->ll_flags |= LL_SBI_JOIN;
324 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
325 if (!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT)) {
326 /* sometimes local client claims to be remote, but mdt
327 * will disagree when client gss not applied. */
328 LCONSOLE_INFO("client claims to be remote, but server "
329 "rejected, forced to be local.\n");
330 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
333 if (!(data->ocd_connect_flags & OBD_CONNECT_LCL_CLIENT)) {
334 /* with gss applied, remote client can not claim to be
335 * local, so mdt maybe force client to be remote. */
336 LCONSOLE_INFO("client claims to be local, but server "
337 "rejected, forced to be remote.\n");
338 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
342 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
343 LCONSOLE_INFO("client enabled MDS capability!\n");
344 sbi->ll_flags |= LL_SBI_MDS_CAPA;
347 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
348 LCONSOLE_INFO("client enabled OSS capability!\n");
349 sbi->ll_flags |= LL_SBI_OSS_CAPA;
352 sbi->ll_sdev_orig = sb->s_dev;
353 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
354 /* We set sb->s_dev equal on all lustre clients in order to support
355 * NFS export clustering. NFSD requires that the FSID be the same
357 /* s_dev is also used in lt_compare() to compare two fs, but that is
358 * only a node-local comparison. */
360 /* XXX: this will not work with LMV */
361 sb->s_dev = get_uuid2int(sbi2mdc(sbi)->cl_target_uuid.uuid,
362 strlen(sbi2mdc(sbi)->cl_target_uuid.uuid));
365 obd = class_name2obd(dt);
367 CERROR("DT %s: not setup or attached\n", dt);
368 GOTO(out_md_fid, err = -ENODEV);
371 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
372 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
373 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
374 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK;
375 if (sbi->ll_flags & LL_SBI_OSS_CAPA)
376 data->ocd_connect_flags |= OBD_CONNECT_OSS_CAPA;
378 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
379 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
380 * disabled by default, because it can still be enabled on the
381 * fly via /proc. As a consequence, we still need to come to an
382 * agreement on the supported algorithms at connect time */
383 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
385 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
386 data->ocd_cksum_types = OBD_CKSUM_ADLER;
388 /* send the list of supported checksum types */
389 data->ocd_cksum_types = OBD_CKSUM_ALL;
392 #ifdef HAVE_LRU_RESIZE_SUPPORT
393 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
395 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
396 "ocd_grant: %d\n", data->ocd_connect_flags,
397 data->ocd_version, data->ocd_grant);
399 obd->obd_upcall.onu_owner = &sbi->ll_lco;
400 obd->obd_upcall.onu_upcall = ll_ocd_update;
401 data->ocd_brw_size = PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT;
403 err = obd_connect(NULL, &dt_conn, obd, &sbi->ll_sb_uuid, data, NULL);
405 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
406 "recovery, of which this client is not a "
407 "part. Please wait for recovery to "
408 "complete, abort, or time out.\n", dt);
409 GOTO(out_md_fid, err);
411 CERROR("Cannot connect to %s: rc = %d\n", dt, err);
412 GOTO(out_md_fid, err);
415 sbi->ll_dt_exp = class_conn2export(&dt_conn);
417 err = obd_fid_init(sbi->ll_dt_exp);
419 CERROR("Can't init data layer FID infrastructure, "
424 spin_lock(&sbi->ll_lco.lco_lock);
425 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
426 spin_unlock(&sbi->ll_lco.lco_lock);
428 err = obd_register_page_removal_cb(sbi->ll_dt_exp,
432 CERROR("cannot register page removal callback: rc = %d\n",err);
435 err = obd_register_lock_cancel_cb(sbi->ll_dt_exp,
436 ll_extent_lock_cancel_cb);
438 CERROR("cannot register lock cancel callback: rc = %d\n", err);
439 GOTO(out_page_rm_cb, err);
442 err = ll_init_ea_size(sbi->ll_md_exp, sbi->ll_dt_exp);;
444 CERROR("cannot set max EA and cookie sizes: rc = %d\n", err);
445 GOTO(out_lock_cn_cb, err);
448 err = obd_prep_async_page(sbi->ll_dt_exp, NULL, NULL, NULL,
449 0, NULL, NULL, NULL, 0, NULL);
451 LCONSOLE_ERROR_MSG(0x151, "There are no OST's in this "
452 "filesystem. There must be at least one "
453 "active OST for a client to start.\n");
454 GOTO(out_lock_cn_cb, err);
457 if (!ll_async_page_slab) {
458 ll_async_page_slab_size =
459 size_round(sizeof(struct ll_async_page)) + err;
460 ll_async_page_slab = cfs_mem_cache_create("ll_async_page",
461 ll_async_page_slab_size,
463 if (!ll_async_page_slab)
464 GOTO(out_lock_cn_cb, err = -ENOMEM);
467 err = md_getstatus(sbi->ll_md_exp, &rootfid, &oc);
469 CERROR("cannot mds_connect: rc = %d\n", err);
470 GOTO(out_lock_cn_cb, err);
472 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&rootfid));
473 sbi->ll_root_fid = rootfid;
475 sb->s_op = &lustre_super_operations;
476 sb->s_export_op = &lustre_export_operations;
479 * XXX: move this to after cbd setup? */
480 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
481 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
482 valid |= OBD_MD_FLRMTPERM;
483 else if (sbi->ll_flags & LL_SBI_ACL)
484 valid |= OBD_MD_FLACL;
486 err = md_getattr(sbi->ll_md_exp, &rootfid, oc, valid, 0, &request);
490 CERROR("md_getattr failed for root: rc = %d\n", err);
491 GOTO(out_lock_cn_cb, err);
493 memset(&lmd, 0, sizeof(lmd));
494 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
495 sbi->ll_md_exp, &lmd);
497 CERROR("failed to understand root inode md: rc = %d\n", err);
498 ptlrpc_req_finished (request);
499 GOTO(out_lock_cn_cb, err);
502 LASSERT(fid_is_sane(&sbi->ll_root_fid));
503 root = ll_iget(sb, ll_fid_build_ino(sbi, &sbi->ll_root_fid), &lmd);
504 md_free_lustre_md(sbi->ll_md_exp, &lmd);
505 ptlrpc_req_finished(request);
507 if (root == NULL || is_bad_inode(root)) {
509 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
510 #ifdef CONFIG_FS_POSIX_ACL
512 posix_acl_release(lmd.posix_acl);
513 lmd.posix_acl = NULL;
516 CERROR("lustre_lite: bad iget4 for root\n");
517 GOTO(out_root, err = -EBADF);
520 err = ll_close_thread_start(&sbi->ll_lcq);
522 CERROR("cannot start close thread: rc %d\n", err);
526 #ifdef CONFIG_FS_POSIX_ACL
527 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
528 rct_init(&sbi->ll_rct);
529 et_init(&sbi->ll_et);
533 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
534 err = obd_set_info_async(sbi->ll_dt_exp, strlen("checksum"),"checksum",
535 sizeof(checksum), &checksum, NULL);
537 sb->s_root = d_alloc_root(root);
539 OBD_FREE(data, sizeof(*data));
540 sb->s_root->d_op = &ll_d_root_ops;
546 obd_unregister_lock_cancel_cb(sbi->ll_dt_exp,
547 ll_extent_lock_cancel_cb);
549 obd_unregister_page_removal_cb(sbi->ll_dt_exp,
551 obd_fid_fini(sbi->ll_dt_exp);
553 obd_disconnect(sbi->ll_dt_exp);
554 sbi->ll_dt_exp = NULL;
556 obd_fid_fini(sbi->ll_md_exp);
558 obd_disconnect(sbi->ll_md_exp);
559 sbi->ll_md_exp = NULL;
563 lprocfs_unregister_mountpoint(sbi);
567 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
571 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
573 rc = obd_get_info(sbi->ll_md_exp, strlen("max_easize"), "max_easize",
576 CERROR("Get max mdsize error rc %d \n", rc);
581 void ll_dump_inode(struct inode *inode)
583 struct list_head *tmp;
584 int dentry_count = 0;
586 LASSERT(inode != NULL);
588 list_for_each(tmp, &inode->i_dentry)
591 CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
592 inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
593 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
596 void lustre_dump_dentry(struct dentry *dentry, int recur)
598 struct list_head *tmp;
601 LASSERT(dentry != NULL);
603 list_for_each(tmp, &dentry->d_subdirs)
606 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
607 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
608 dentry->d_name.len, dentry->d_name.name,
609 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
610 dentry->d_parent, dentry->d_inode, atomic_read(&dentry->d_count),
611 dentry->d_flags, dentry->d_fsdata, subdirs);
612 if (dentry->d_inode != NULL)
613 ll_dump_inode(dentry->d_inode);
618 list_for_each(tmp, &dentry->d_subdirs) {
619 struct dentry *d = list_entry(tmp, struct dentry, d_child);
620 lustre_dump_dentry(d, recur - 1);
624 #ifdef HAVE_EXPORT___IGET
625 static void prune_dir_dentries(struct inode *inode)
627 struct dentry *dentry, *prev = NULL;
629 /* due to lustre specific logic, a directory
630 * can have few dentries - a bug from VFS POV */
632 spin_lock(&dcache_lock);
633 if (!list_empty(&inode->i_dentry)) {
634 dentry = list_entry(inode->i_dentry.prev,
635 struct dentry, d_alias);
636 /* in order to prevent infinite loops we
637 * break if previous dentry is busy */
638 if (dentry != prev) {
641 spin_unlock(&dcache_lock);
643 /* try to kill all child dentries */
645 shrink_dcache_parent(dentry);
646 unlock_dentry(dentry);
649 /* now try to get rid of current dentry */
650 d_prune_aliases(inode);
654 spin_unlock(&dcache_lock);
657 static void prune_deathrow_one(struct ll_inode_info *lli)
659 struct inode *inode = ll_info2i(lli);
661 /* first, try to drop any dentries - they hold a ref on the inode */
662 if (S_ISDIR(inode->i_mode))
663 prune_dir_dentries(inode);
665 d_prune_aliases(inode);
668 /* if somebody still uses it, leave it */
669 LASSERT(atomic_read(&inode->i_count) > 0);
670 if (atomic_read(&inode->i_count) > 1)
673 CDEBUG(D_INODE, "inode %lu/%u(%d) looks a good candidate for prune\n",
674 inode->i_ino,inode->i_generation, atomic_read(&inode->i_count));
676 /* seems nobody uses it anymore */
684 static void prune_deathrow(struct ll_sb_info *sbi, int try)
686 struct ll_inode_info *lli;
690 if (need_resched() && try)
694 if (!spin_trylock(&sbi->ll_deathrow_lock))
697 spin_lock(&sbi->ll_deathrow_lock);
702 if (!list_empty(&sbi->ll_deathrow)) {
703 lli = list_entry(sbi->ll_deathrow.next,
704 struct ll_inode_info,
706 list_del_init(&lli->lli_dead_list);
707 if (!list_empty(&sbi->ll_deathrow))
710 spin_unlock(&sbi->ll_deathrow_lock);
713 prune_deathrow_one(lli);
715 } while (empty == 0);
717 #else /* !HAVE_EXPORT___IGET */
718 #define prune_deathrow(sbi, try) do {} while (0)
719 #endif /* HAVE_EXPORT___IGET */
721 void client_common_put_super(struct super_block *sb)
723 struct ll_sb_info *sbi = ll_s2sbi(sb);
726 #ifdef CONFIG_FS_POSIX_ACL
727 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
728 et_fini(&sbi->ll_et);
729 rct_fini(&sbi->ll_rct);
733 obd_cancel_unused(sbi->ll_dt_exp, NULL, 0, NULL);
735 ll_close_thread_shutdown(sbi->ll_lcq);
737 /* destroy inodes in deathrow */
738 prune_deathrow(sbi, 0);
740 list_del(&sbi->ll_conn_chain);
742 obd_unregister_page_removal_cb(sbi->ll_dt_exp,
744 obd_unregister_lock_cancel_cb(sbi->ll_dt_exp,ll_extent_lock_cancel_cb);
746 obd_fid_fini(sbi->ll_dt_exp);
747 obd_disconnect(sbi->ll_dt_exp);
748 sbi->ll_dt_exp = NULL;
750 lprocfs_unregister_mountpoint(sbi);
752 obd_fid_fini(sbi->ll_md_exp);
753 obd_disconnect(sbi->ll_md_exp);
754 sbi->ll_md_exp = NULL;
759 void ll_kill_super(struct super_block *sb)
761 struct ll_sb_info *sbi;
766 if (!(sb->s_flags & MS_ACTIVE))
770 /* we need restore s_dev from changed for clustred NFS before put_super
771 * because new kernels have cached s_dev and change sb->s_dev in
772 * put_super not affected real removing devices */
774 sb->s_dev = sbi->ll_sdev_orig;
778 char *ll_read_opt(const char *opt, char *data)
784 CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
785 if (strncmp(opt, data, strlen(opt)))
787 if ((value = strchr(data, '=')) == NULL)
791 OBD_ALLOC(retval, strlen(value) + 1);
793 CERROR("out of memory!\n");
797 memcpy(retval, value, strlen(value)+1);
798 CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
802 static inline int ll_set_opt(const char *opt, char *data, int fl)
804 if (strncmp(opt, data, strlen(opt)) != 0)
810 /* non-client-specific mount options are parsed in lmd_parse */
811 static int ll_options(char *options, int *flags)
814 char *s1 = options, *s2;
820 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
823 CDEBUG(D_SUPER, "next opt=%s\n", s1);
824 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
829 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
834 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
839 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
844 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
849 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
854 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
856 /* Ignore deprecated mount option. The client will
857 * always try to mount with ACL support, whether this
858 * is used depends on whether server supports it. */
861 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
865 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
871 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
876 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
881 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
886 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
892 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
898 s2 = strchr(s1, ',');
906 void ll_lli_init(struct ll_inode_info *lli)
908 lli->lli_inode_magic = LLI_INODE_MAGIC;
909 sema_init(&lli->lli_size_sem, 1);
910 sema_init(&lli->lli_write_sem, 1);
912 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
913 spin_lock_init(&lli->lli_lock);
914 INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
915 INIT_LIST_HEAD(&lli->lli_close_list);
916 lli->lli_inode_magic = LLI_INODE_MAGIC;
917 sema_init(&lli->lli_och_sem, 1);
918 lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
919 lli->lli_mds_exec_och = NULL;
920 lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
921 lli->lli_open_fd_exec_count = 0;
922 INIT_LIST_HEAD(&lli->lli_dead_list);
923 lli->lli_remote_perms = NULL;
924 lli->lli_rmtperm_utime = 0;
925 sema_init(&lli->lli_rmtperm_sem, 1);
926 INIT_LIST_HEAD(&lli->lli_oss_capas);
929 int ll_fill_super(struct super_block *sb)
931 struct lustre_profile *lprof;
932 struct lustre_sb_info *lsi = s2lsi(sb);
933 struct ll_sb_info *sbi;
934 char *dt = NULL, *md = NULL;
935 char *profilenm = get_profile_name(sb);
936 struct config_llog_instance cfg = {0, };
937 char ll_instance[sizeof(sb) * 2 + 1];
941 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
945 /* client additional sb info */
946 lsi->lsi_llsbi = sbi = ll_init_sbi();
952 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
956 /* Generate a string unique to this super, in case some joker tries
957 to mount the same fs at two mount points.
958 Use the address of the super itself.*/
959 sprintf(ll_instance, "%p", sb);
960 cfg.cfg_instance = ll_instance;
961 cfg.cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
963 /* set up client obds */
964 err = lustre_process_log(sb, profilenm, &cfg);
966 CERROR("Unable to process log: %d\n", err);
970 lprof = class_get_profile(profilenm);
972 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
973 " read from the MGS. Does that filesystem "
974 "exist?\n", profilenm);
975 GOTO(out_free, err = -EINVAL);
977 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
978 lprof->lp_md, lprof->lp_dt);
980 OBD_ALLOC(dt, strlen(lprof->lp_dt) +
981 strlen(ll_instance) + 2);
983 GOTO(out_free, err = -ENOMEM);
984 sprintf(dt, "%s-%s", lprof->lp_dt, ll_instance);
986 OBD_ALLOC(md, strlen(lprof->lp_md) +
987 strlen(ll_instance) + 2);
989 GOTO(out_free, err = -ENOMEM);
990 sprintf(md, "%s-%s", lprof->lp_md, ll_instance);
992 /* connections, registrations, sb setup */
993 err = client_common_fill_super(sb, md, dt);
997 OBD_FREE(md, strlen(md) + 1);
999 OBD_FREE(dt, strlen(dt) + 1);
1003 LCONSOLE_WARN("Client %s has started\n", profilenm);
1006 } /* ll_fill_super */
1009 void ll_put_super(struct super_block *sb)
1011 struct config_llog_instance cfg;
1012 char ll_instance[sizeof(sb) * 2 + 1];
1013 struct obd_device *obd;
1014 struct lustre_sb_info *lsi = s2lsi(sb);
1015 struct ll_sb_info *sbi = ll_s2sbi(sb);
1016 char *profilenm = get_profile_name(sb);
1017 int force = 1, next;
1020 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1022 ll_print_capa_stat(sbi);
1024 sprintf(ll_instance, "%p", sb);
1025 cfg.cfg_instance = ll_instance;
1026 lustre_end_log(sb, NULL, &cfg);
1028 if (sbi->ll_md_exp) {
1029 obd = class_exp2obd(sbi->ll_md_exp);
1031 force = obd->obd_force;
1034 /* We need to set force before the lov_disconnect in
1035 lustre_common_put_super, since l_d cleans up osc's as well. */
1038 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1040 obd->obd_force = force;
1045 /* Only if client_common_fill_super succeeded */
1046 client_common_put_super(sb);
1049 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1050 class_manual_cleanup(obd);
1054 class_del_profile(profilenm);
1057 lsi->lsi_llsbi = NULL;
1059 lustre_common_put_super(sb);
1061 LCONSOLE_WARN("client %s umount complete\n", ll_instance);
1066 } /* client_put_super */
1068 #ifdef HAVE_REGISTER_CACHE
1069 #include <linux/cache_def.h>
1070 #ifdef HAVE_CACHE_RETURN_INT
1075 ll_shrink_cache(int priority, unsigned int gfp_mask)
1077 struct ll_sb_info *sbi;
1080 list_for_each_entry(sbi, &ll_super_blocks, ll_list)
1081 count += llap_shrink_cache(sbi, priority);
1083 #ifdef HAVE_CACHE_RETURN_INT
1088 struct cache_definition ll_cache_definition = {
1089 .name = "llap_cache",
1090 .shrink = ll_shrink_cache
1092 #endif /* HAVE_REGISTER_CACHE */
1094 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
1096 struct inode *inode = NULL;
1097 /* NOTE: we depend on atomic igrab() -bzzz */
1098 lock_res_and_lock(lock);
1099 if (lock->l_ast_data) {
1100 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
1101 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1102 inode = igrab(lock->l_ast_data);
1104 inode = lock->l_ast_data;
1105 ldlm_lock_debug(NULL, inode->i_state & I_FREEING ?
1107 lock, __FILE__, __func__, __LINE__,
1108 "l_ast_data %p is bogus: magic %08x",
1109 lock->l_ast_data, lli->lli_inode_magic);
1113 unlock_res_and_lock(lock);
1117 static int null_if_equal(struct ldlm_lock *lock, void *data)
1119 if (data == lock->l_ast_data) {
1120 lock->l_ast_data = NULL;
1122 if (lock->l_req_mode != lock->l_granted_mode)
1123 LDLM_ERROR(lock,"clearing inode with ungranted lock");
1126 return LDLM_ITER_CONTINUE;
1129 void ll_clear_inode(struct inode *inode)
1131 struct ll_inode_info *lli = ll_i2info(inode);
1132 struct ll_sb_info *sbi = ll_i2sbi(inode);
1135 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1136 inode->i_generation, inode);
1138 if (S_ISDIR(inode->i_mode)) {
1139 /* these should have been cleared in ll_file_release */
1140 LASSERT(lli->lli_sai == NULL);
1141 LASSERT(lli->lli_opendir_key == NULL);
1142 LASSERT(lli->lli_opendir_pid == 0);
1145 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1146 md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
1147 null_if_equal, inode);
1149 LASSERT(!lli->lli_open_fd_write_count);
1150 LASSERT(!lli->lli_open_fd_read_count);
1151 LASSERT(!lli->lli_open_fd_exec_count);
1153 if (lli->lli_mds_write_och)
1154 ll_md_real_close(inode, FMODE_WRITE);
1155 if (lli->lli_mds_exec_och)
1156 ll_md_real_close(inode, FMODE_EXEC);
1157 if (lli->lli_mds_read_och)
1158 ll_md_real_close(inode, FMODE_READ);
1161 obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
1162 null_if_equal, inode);
1164 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1165 lli->lli_smd = NULL;
1168 if (lli->lli_symlink_name) {
1169 OBD_FREE(lli->lli_symlink_name,
1170 strlen(lli->lli_symlink_name) + 1);
1171 lli->lli_symlink_name = NULL;
1174 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1175 LASSERT(lli->lli_posix_acl == NULL);
1176 if (lli->lli_remote_perms) {
1177 free_rmtperm_hash(lli->lli_remote_perms);
1178 lli->lli_remote_perms = NULL;
1181 #ifdef CONFIG_FS_POSIX_ACL
1182 else if (lli->lli_posix_acl) {
1183 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1184 LASSERT(lli->lli_remote_perms == NULL);
1185 posix_acl_release(lli->lli_posix_acl);
1186 lli->lli_posix_acl = NULL;
1189 lli->lli_inode_magic = LLI_INODE_DEAD;
1191 #ifdef HAVE_EXPORT___IGET
1192 spin_lock(&sbi->ll_deathrow_lock);
1193 list_del_init(&lli->lli_dead_list);
1194 spin_unlock(&sbi->ll_deathrow_lock);
1196 ll_clear_inode_capas(inode);
1201 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
1202 struct md_open_data **mod)
1204 struct lustre_md md;
1205 struct ll_sb_info *sbi = ll_i2sbi(inode);
1206 struct ptlrpc_request *request = NULL;
1210 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1211 LUSTRE_OPC_ANY, NULL);
1212 if (IS_ERR(op_data))
1213 RETURN(PTR_ERR(op_data));
1215 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1218 ptlrpc_req_finished(request);
1219 if (rc == -ENOENT) {
1221 /* Unlinked special device node? Or just a race?
1222 * Pretend we done everything. */
1223 if (!S_ISREG(inode->i_mode) &&
1224 !S_ISDIR(inode->i_mode))
1225 rc = inode_setattr(inode, &op_data->op_attr);
1226 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1227 CERROR("md_setattr fails: rc = %d\n", rc);
1232 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1233 sbi->ll_md_exp, &md);
1235 ptlrpc_req_finished(request);
1239 /* We call inode_setattr to adjust timestamps.
1240 * If there is at least some data in file, we cleared ATTR_SIZE
1241 * above to avoid invoking vmtruncate, otherwise it is important
1242 * to call vmtruncate in inode_setattr to update inode->i_size
1244 rc = inode_setattr(inode, &op_data->op_attr);
1246 /* Extract epoch data if obtained. */
1247 op_data->op_handle = md.body->handle;
1248 op_data->op_ioepoch = md.body->ioepoch;
1250 ll_update_inode(inode, &md);
1251 ptlrpc_req_finished(request);
1256 /* Close IO epoch and send Size-on-MDS attribute update. */
1257 static int ll_setattr_done_writing(struct inode *inode,
1258 struct md_op_data *op_data,
1259 struct md_open_data *mod)
1261 struct ll_inode_info *lli = ll_i2info(inode);
1265 LASSERT(op_data != NULL);
1266 if (!S_ISREG(inode->i_mode))
1269 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1270 op_data->op_ioepoch, PFID(&lli->lli_fid));
1272 op_data->op_flags = MF_EPOCH_CLOSE | MF_SOM_CHANGE;
1273 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1274 if (rc == -EAGAIN) {
1275 /* MDS has instructed us to obtain Size-on-MDS attribute
1276 * from OSTs and send setattr to back to MDS. */
1277 rc = ll_sizeonmds_update(inode, mod, &op_data->op_handle,
1278 op_data->op_ioepoch);
1280 CERROR("inode %lu mdc truncate failed: rc = %d\n",
1286 static int ll_setattr_do_truncate(struct inode *inode, loff_t new_size)
1288 struct ll_sb_info *sbi = ll_i2sbi(inode);
1289 struct ll_inode_info *lli = ll_i2info(inode);
1290 struct lov_stripe_md *lsm = lli->lli_smd;
1292 ldlm_policy_data_t policy = { .l_extent = {new_size,
1294 struct lustre_handle lockh = { 0 };
1295 int local_lock = 0; /* 0 - no local lock;
1296 * 1 - lock taken by lock_extent;
1297 * 2 - by obd_match*/
1302 UNLOCK_INODE_MUTEX(inode);
1303 UP_WRITE_I_ALLOC_SEM(inode);
1305 if (sbi->ll_lockless_truncate_enable &&
1306 (sbi->ll_lco.lco_flags & OBD_CONNECT_TRUNCLOCK)) {
1307 ast_flags = LDLM_FL_BLOCK_GRANTED;
1308 rc = obd_match(sbi->ll_dt_exp, lsm, LDLM_EXTENT,
1309 &policy, LCK_PW, &ast_flags, inode, &lockh);
1313 } else if (rc == 0) {
1314 rc = ll_file_punch(inode, new_size, 1);
1317 /* XXX when we fix the AST intents to pass the discard-range
1318 * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
1320 ast_flags = (new_size == 0) ? LDLM_AST_DISCARD_DATA : 0;
1321 rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy,
1323 if (likely(rc == 0))
1327 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1328 DOWN_WRITE_I_ALLOC_SEM(inode);
1329 LOCK_INODE_MUTEX(inode);
1331 LOCK_INODE_MUTEX(inode);
1332 DOWN_WRITE_I_ALLOC_SEM(inode);
1334 if (likely(rc == 0)) {
1335 /* Only ll_inode_size_lock is taken at this level.
1336 * lov_stripe_lock() is grabbed by ll_truncate() only over
1337 * call to obd_adjust_kms(). If vmtruncate returns 0, then
1338 * ll_truncate dropped ll_inode_size_lock() */
1339 ll_inode_size_lock(inode, 0);
1341 spin_lock(&lli->lli_lock);
1342 lli->lli_flags |= LLIF_SRVLOCK;
1343 spin_unlock(&lli->lli_lock);
1345 rc = vmtruncate(inode, new_size);
1347 spin_lock(&lli->lli_lock);
1348 lli->lli_flags &= ~LLIF_SRVLOCK;
1349 spin_unlock(&lli->lli_lock);
1352 LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
1353 ll_inode_size_unlock(inode, 0);
1358 if (local_lock == 2)
1359 err = obd_cancel(sbi->ll_dt_exp, lsm, LCK_PW, &lockh);
1361 err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
1362 if (unlikely(err != 0)){
1363 CERROR("extent unlock failed: err=%d,"
1364 " unlock method =%d\n", err, local_lock);
1372 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1373 * object(s) determine the file size and mtime. Otherwise, the MDS will
1374 * keep these values until such a time that objects are allocated for it.
1375 * We do the MDS operations first, as it is checking permissions for us.
1376 * We don't to the MDS RPC if there is nothing that we want to store there,
1377 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1378 * going to do an RPC anyways.
1380 * If we are doing a truncate, we will send the mtime and ctime updates
1381 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1382 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1385 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1387 struct ll_inode_info *lli = ll_i2info(inode);
1388 struct lov_stripe_md *lsm = lli->lli_smd;
1389 struct ll_sb_info *sbi = ll_i2sbi(inode);
1390 struct md_op_data *op_data = NULL;
1391 struct md_open_data *mod = NULL;
1392 int ia_valid = attr->ia_valid;
1393 int rc = 0, rc1 = 0;
1396 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
1398 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETATTR, 1);
1400 if (ia_valid & ATTR_SIZE) {
1401 if (attr->ia_size > ll_file_maxbytes(inode)) {
1402 CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1403 attr->ia_size, ll_file_maxbytes(inode));
1407 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME | ATTR_TRUNC;
1410 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1411 if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1412 if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
1416 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1417 if (attr->ia_valid & ATTR_CTIME) {
1418 attr->ia_ctime = CURRENT_TIME;
1419 attr->ia_valid |= ATTR_CTIME_SET;
1421 if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1422 attr->ia_atime = CURRENT_TIME;
1423 attr->ia_valid |= ATTR_ATIME_SET;
1425 if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1426 attr->ia_mtime = CURRENT_TIME;
1427 attr->ia_valid |= ATTR_MTIME_SET;
1429 if ((attr->ia_valid & ATTR_CTIME) && !(attr->ia_valid & ATTR_MTIME)) {
1430 /* To avoid stale mtime on mds, obtain it from ost and send
1432 rc = ll_glimpse_size(inode, 0);
1436 attr->ia_valid |= ATTR_MTIME_SET | ATTR_MTIME;
1437 attr->ia_mtime = inode->i_mtime;
1440 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1441 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1442 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1443 cfs_time_current_sec());
1445 /* NB: ATTR_SIZE will only be set after this point if the size
1446 * resides on the MDS, ie, this file has no objects. */
1448 attr->ia_valid &= ~ATTR_SIZE;
1450 /* We always do an MDS RPC, even if we're only changing the size;
1451 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1453 OBD_ALLOC_PTR(op_data);
1454 if (op_data == NULL)
1457 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1459 /* Open epoch for truncate. */
1460 if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
1461 (ia_valid & ATTR_SIZE))
1462 op_data->op_flags = MF_EPOCH_OPEN;
1464 rc = ll_md_setattr(inode, op_data, &mod);
1468 if (op_data->op_ioepoch)
1469 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID" for "
1470 "truncate\n", op_data->op_ioepoch, PFID(&lli->lli_fid));
1472 if (!lsm || !S_ISREG(inode->i_mode)) {
1473 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1477 /* We really need to get our PW lock before we change inode->i_size.
1478 * If we don't we can race with other i_size updaters on our node, like
1479 * ll_file_read. We can also race with i_size propogation to other
1480 * nodes through dirtying and writeback of final cached pages. This
1481 * last one is especially bad for racing o_append users on other
1483 if (ia_valid & ATTR_SIZE) {
1484 rc = ll_setattr_do_truncate(inode, attr->ia_size);
1485 } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
1487 struct obd_info oinfo = { { { 0 } } };
1490 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
1491 inode->i_ino, LTIME_S(attr->ia_mtime));
1495 oa->o_id = lsm->lsm_object_id;
1496 oa->o_gr = lsm->lsm_object_gr;
1497 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1499 flags = OBD_MD_FLTYPE | OBD_MD_FLATIME |
1500 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
1501 OBD_MD_FLFID | OBD_MD_FLGENER |
1504 obdo_from_inode(oa, inode, flags);
1508 oinfo.oi_capa = ll_mdscapa_get(inode);
1510 /* XXX: this looks unnecessary now. */
1511 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1512 capa_put(oinfo.oi_capa);
1514 CERROR("obd_setattr_async fails: rc=%d\n", rc);
1523 if (op_data->op_ioepoch)
1524 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1525 ll_finish_md_op_data(op_data);
1527 return rc ? rc : rc1;
1530 int ll_setattr(struct dentry *de, struct iattr *attr)
1534 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1535 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1536 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1537 if ((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1538 (ATTR_SIZE|ATTR_MODE)) {
1539 mode = de->d_inode->i_mode;
1540 if (((mode & S_ISUID) && (!(attr->ia_mode & S_ISUID))) ||
1541 ((mode & S_ISGID) && (mode & S_IXGRP) &&
1542 (!(attr->ia_mode & S_ISGID))))
1543 attr->ia_valid |= ATTR_FORCE;
1546 return ll_setattr_raw(de->d_inode, attr);
1549 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1550 __u64 max_age, __u32 flags)
1552 struct ll_sb_info *sbi = ll_s2sbi(sb);
1553 struct obd_statfs obd_osfs;
1557 rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, flags);
1559 CERROR("md_statfs fails: rc = %d\n", rc);
1563 osfs->os_type = sb->s_magic;
1565 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1566 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1568 rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
1569 &obd_osfs, max_age, flags);
1571 CERROR("obd_statfs fails: rc = %d\n", rc);
1575 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1576 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1579 osfs->os_bsize = obd_osfs.os_bsize;
1580 osfs->os_blocks = obd_osfs.os_blocks;
1581 osfs->os_bfree = obd_osfs.os_bfree;
1582 osfs->os_bavail = obd_osfs.os_bavail;
1584 /* If we don't have as many objects free on the OST as inodes
1585 * on the MDS, we reduce the total number of inodes to
1586 * compensate, so that the "inodes in use" number is correct.
1588 if (obd_osfs.os_ffree < osfs->os_ffree) {
1589 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1591 osfs->os_ffree = obd_osfs.os_ffree;
1596 #ifndef HAVE_STATFS_DENTRY_PARAM
1597 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1600 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1602 struct super_block *sb = de->d_sb;
1604 struct obd_statfs osfs;
1607 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1608 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1610 /* For now we will always get up-to-date statfs values, but in the
1611 * future we may allow some amount of caching on the client (e.g.
1612 * from QOS or lprocfs updates). */
1613 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - 1, 0);
1617 statfs_unpack(sfs, &osfs);
1619 /* We need to downshift for all 32-bit kernels, because we can't
1620 * tell if the kernel is being called via sys_statfs64() or not.
1621 * Stop before overflowing f_bsize - in which case it is better
1622 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1623 if (sizeof(long) < 8) {
1624 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1627 osfs.os_blocks >>= 1;
1628 osfs.os_bfree >>= 1;
1629 osfs.os_bavail >>= 1;
1633 sfs->f_blocks = osfs.os_blocks;
1634 sfs->f_bfree = osfs.os_bfree;
1635 sfs->f_bavail = osfs.os_bavail;
1640 void ll_inode_size_lock(struct inode *inode, int lock_lsm)
1642 struct ll_inode_info *lli;
1643 struct lov_stripe_md *lsm;
1645 lli = ll_i2info(inode);
1646 LASSERT(lli->lli_size_sem_owner != current);
1647 down(&lli->lli_size_sem);
1648 LASSERT(lli->lli_size_sem_owner == NULL);
1649 lli->lli_size_sem_owner = current;
1651 LASSERTF(lsm != NULL || lock_lsm == 0, "lsm %p, lock_lsm %d\n",
1654 lov_stripe_lock(lsm);
1657 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
1659 struct ll_inode_info *lli;
1660 struct lov_stripe_md *lsm;
1662 lli = ll_i2info(inode);
1664 LASSERTF(lsm != NULL || unlock_lsm == 0, "lsm %p, lock_lsm %d\n",
1667 lov_stripe_unlock(lsm);
1668 LASSERT(lli->lli_size_sem_owner == current);
1669 lli->lli_size_sem_owner = NULL;
1670 up(&lli->lli_size_sem);
1673 static void ll_replace_lsm(struct inode *inode, struct lov_stripe_md *lsm)
1675 struct ll_inode_info *lli = ll_i2info(inode);
1677 dump_lsm(D_INODE, lsm);
1678 dump_lsm(D_INODE, lli->lli_smd);
1679 LASSERTF(lsm->lsm_magic == LOV_MAGIC_JOIN,
1680 "lsm must be joined lsm %p\n", lsm);
1681 obd_free_memmd(ll_i2dtexp(inode), &lli->lli_smd);
1682 CDEBUG(D_INODE, "replace lsm %p to lli_smd %p for inode %lu%u(%p)\n",
1683 lsm, lli->lli_smd, inode->i_ino, inode->i_generation, inode);
1685 lli->lli_maxbytes = lsm->lsm_maxbytes;
1686 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1687 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1690 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1692 struct ll_inode_info *lli = ll_i2info(inode);
1693 struct mdt_body *body = md->body;
1694 struct lov_stripe_md *lsm = md->lsm;
1695 struct ll_sb_info *sbi = ll_i2sbi(inode);
1697 LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1699 if (lli->lli_smd == NULL) {
1700 if (lsm->lsm_magic != LOV_MAGIC &&
1701 lsm->lsm_magic != LOV_MAGIC_JOIN) {
1702 dump_lsm(D_ERROR, lsm);
1705 CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
1706 lsm, inode->i_ino, inode->i_generation, inode);
1707 /* ll_inode_size_lock() requires it is only called
1708 * with lli_smd != NULL or lock_lsm == 0 or we can
1709 * race between lock/unlock. bug 9547 */
1711 lli->lli_maxbytes = lsm->lsm_maxbytes;
1712 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1713 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1715 if (lli->lli_smd->lsm_magic == lsm->lsm_magic &&
1716 lli->lli_smd->lsm_stripe_count ==
1717 lsm->lsm_stripe_count) {
1718 if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
1719 CERROR("lsm mismatch for inode %ld\n",
1721 CERROR("lli_smd:\n");
1722 dump_lsm(D_ERROR, lli->lli_smd);
1724 dump_lsm(D_ERROR, lsm);
1728 ll_replace_lsm(inode, lsm);
1730 if (lli->lli_smd != lsm)
1731 obd_free_memmd(ll_i2dtexp(inode), &lsm);
1734 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1735 if (body->valid & OBD_MD_FLRMTPERM)
1736 ll_update_remote_perm(inode, md->remote_perm);
1738 #ifdef CONFIG_FS_POSIX_ACL
1739 else if (body->valid & OBD_MD_FLACL) {
1740 spin_lock(&lli->lli_lock);
1741 if (lli->lli_posix_acl)
1742 posix_acl_release(lli->lli_posix_acl);
1743 lli->lli_posix_acl = md->posix_acl;
1744 spin_unlock(&lli->lli_lock);
1747 inode->i_ino = ll_fid_build_ino(sbi, &body->fid1);
1749 if (body->valid & OBD_MD_FLATIME &&
1750 body->atime > LTIME_S(inode->i_atime))
1751 LTIME_S(inode->i_atime) = body->atime;
1753 /* mtime is always updated with ctime, but can be set in past.
1754 As write and utime(2) may happen within 1 second, and utime's
1755 mtime has a priority over write's one, so take mtime from mds
1756 for the same ctimes. */
1757 if (body->valid & OBD_MD_FLCTIME &&
1758 body->ctime >= LTIME_S(inode->i_ctime)) {
1759 LTIME_S(inode->i_ctime) = body->ctime;
1760 if (body->valid & OBD_MD_FLMTIME) {
1761 CDEBUG(D_INODE, "setting ino %lu mtime "
1762 "from %lu to "LPU64"\n", inode->i_ino,
1763 LTIME_S(inode->i_mtime), body->mtime);
1764 LTIME_S(inode->i_mtime) = body->mtime;
1767 if (body->valid & OBD_MD_FLMODE)
1768 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
1769 if (body->valid & OBD_MD_FLTYPE)
1770 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
1771 if (S_ISREG(inode->i_mode)) {
1772 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
1774 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1776 #ifdef HAVE_INODE_BLKSIZE
1777 inode->i_blksize = 1<<inode->i_blkbits;
1779 if (body->valid & OBD_MD_FLUID)
1780 inode->i_uid = body->uid;
1781 if (body->valid & OBD_MD_FLGID)
1782 inode->i_gid = body->gid;
1783 if (body->valid & OBD_MD_FLFLAGS)
1784 inode->i_flags = ll_ext_to_inode_flags(body->flags);
1785 if (body->valid & OBD_MD_FLNLINK)
1786 inode->i_nlink = body->nlink;
1787 if (body->valid & OBD_MD_FLRDEV)
1788 inode->i_rdev = old_decode_dev(body->rdev);
1790 if (body->valid & OBD_MD_FLID) {
1791 /* FID shouldn't be changed! */
1792 if (fid_is_sane(&lli->lli_fid)) {
1793 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
1794 "Trying to change FID "DFID
1795 " to the "DFID", inode %lu/%u(%p)\n",
1796 PFID(&lli->lli_fid), PFID(&body->fid1),
1797 inode->i_ino, inode->i_generation, inode);
1799 lli->lli_fid = body->fid1;
1802 LASSERT(fid_seq(&lli->lli_fid) != 0);
1804 if (body->valid & OBD_MD_FLSIZE) {
1805 if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
1806 S_ISREG(inode->i_mode) && lli->lli_smd) {
1807 struct lustre_handle lockh;
1810 /* As it is possible a blocking ast has been processed
1811 * by this time, we need to check there is an UPDATE
1812 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
1814 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
1817 if (lli->lli_flags & (LLIF_DONE_WRITING |
1818 LLIF_EPOCH_PENDING |
1820 CERROR("ino %lu flags %lu still has "
1821 "size authority! do not trust "
1822 "the size got from MDS\n",
1823 inode->i_ino, lli->lli_flags);
1825 /* Use old size assignment to avoid
1826 * deadlock bz14138 & bz14326 */
1827 inode->i_size = body->size;
1828 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
1830 ldlm_lock_decref(&lockh, mode);
1833 /* Use old size assignment to avoid
1834 * deadlock bz14138 & bz14326 */
1835 inode->i_size = body->size;
1838 if (body->valid & OBD_MD_FLBLOCKS)
1839 inode->i_blocks = body->blocks;
1842 if (body->valid & OBD_MD_FLMDSCAPA) {
1843 LASSERT(md->mds_capa);
1844 ll_add_capa(inode, md->mds_capa);
1846 if (body->valid & OBD_MD_FLOSSCAPA) {
1847 LASSERT(md->oss_capa);
1848 ll_add_capa(inode, md->oss_capa);
1852 static struct backing_dev_info ll_backing_dev_info = {
1853 .ra_pages = 0, /* No readahead */
1854 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12))
1855 .capabilities = 0, /* Does contribute to dirty memory */
1857 .memory_backed = 0, /* Does contribute to dirty memory */
1861 void ll_read_inode2(struct inode *inode, void *opaque)
1863 struct lustre_md *md = opaque;
1864 struct ll_inode_info *lli = ll_i2info(inode);
1867 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n",
1868 inode->i_ino, inode->i_generation, inode);
1872 LASSERT(!lli->lli_smd);
1874 /* Core attributes from the MDS first. This is a new inode, and
1875 * the VFS doesn't zero times in the core inode so we have to do
1876 * it ourselves. They will be overwritten by either MDS or OST
1877 * attributes - we just need to make sure they aren't newer. */
1878 LTIME_S(inode->i_mtime) = 0;
1879 LTIME_S(inode->i_atime) = 0;
1880 LTIME_S(inode->i_ctime) = 0;
1882 ll_update_inode(inode, md);
1884 /* OIDEBUG(inode); */
1886 if (S_ISREG(inode->i_mode)) {
1887 struct ll_sb_info *sbi = ll_i2sbi(inode);
1888 inode->i_op = &ll_file_inode_operations;
1889 inode->i_fop = sbi->ll_fop;
1890 inode->i_mapping->a_ops = &ll_aops;
1892 } else if (S_ISDIR(inode->i_mode)) {
1893 inode->i_op = &ll_dir_inode_operations;
1894 inode->i_fop = &ll_dir_operations;
1895 inode->i_mapping->a_ops = &ll_dir_aops;
1897 } else if (S_ISLNK(inode->i_mode)) {
1898 inode->i_op = &ll_fast_symlink_inode_operations;
1901 inode->i_op = &ll_special_inode_operations;
1903 init_special_inode(inode, inode->i_mode,
1904 kdev_t_to_nr(inode->i_rdev));
1906 /* initializing backing dev info. */
1907 inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
1913 void ll_delete_inode(struct inode *inode)
1915 struct ll_sb_info *sbi = ll_i2sbi(inode);
1919 rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
1921 CERROR("fid_delete() failed, rc %d\n", rc);
1923 truncate_inode_pages(&inode->i_data, 0);
1929 int ll_iocontrol(struct inode *inode, struct file *file,
1930 unsigned int cmd, unsigned long arg)
1932 struct ll_sb_info *sbi = ll_i2sbi(inode);
1933 struct ptlrpc_request *req = NULL;
1938 case EXT3_IOC_GETFLAGS: {
1939 struct mdt_body *body;
1940 struct obd_capa *oc;
1942 oc = ll_mdscapa_get(inode);
1943 rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
1944 OBD_MD_FLFLAGS, 0, &req);
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 EXT3_IOC_SETFLAGS: {
1960 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1961 struct obd_info oinfo = { { { 0 } } };
1962 struct md_op_data *op_data;
1964 if (get_user(flags, (int *)arg))
1968 OBDO_ALLOC(oinfo.oi_oa);
1972 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
1973 LUSTRE_OPC_ANY, NULL);
1974 if (IS_ERR(op_data))
1975 RETURN(PTR_ERR(op_data));
1977 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
1978 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
1979 rc = md_setattr(sbi->ll_md_exp, op_data,
1980 NULL, 0, NULL, 0, &req, NULL);
1981 ll_finish_md_op_data(op_data);
1982 ptlrpc_req_finished(req);
1983 if (rc || lsm == NULL) {
1984 OBDO_FREE(oinfo.oi_oa);
1988 oinfo.oi_oa->o_id = lsm->lsm_object_id;
1989 oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
1990 oinfo.oi_oa->o_flags = flags;
1991 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
1993 oinfo.oi_capa = ll_mdscapa_get(inode);
1995 obdo_from_inode(oinfo.oi_oa, inode,
1996 OBD_MD_FLFID | OBD_MD_FLGENER);
1997 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1998 capa_put(oinfo.oi_capa);
1999 OBDO_FREE(oinfo.oi_oa);
2001 if (rc != -EPERM && rc != -EACCES)
2002 CERROR("md_setattr_async fails: rc = %d\n", rc);
2006 inode->i_flags = ll_ext_to_inode_flags(flags |
2007 MDS_BFLAG_EXT_FLAGS);
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", current->uid);
2023 obd_set_info_async(sbi->ll_md_exp,
2024 sizeof(KEY_FLUSH_CTX) - 1, KEY_FLUSH_CTX,
2026 obd_set_info_async(sbi->ll_dt_exp,
2027 sizeof(KEY_FLUSH_CTX) - 1, 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 lustre_sb_info *lsi = s2lsi(sb);
2042 struct ll_sb_info *sbi = ll_s2sbi(sb);
2043 struct obd_device *obd;
2044 struct obd_ioctl_data ioc_data = { 0 };
2047 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
2048 if (!(flags & MNT_FORCE)) {
2054 /* Tell the MGC we got umount -f */
2055 lsi->lsi_flags |= LSI_UMOUNT_FORCE;
2057 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2058 sb->s_count, atomic_read(&sb->s_active));
2060 obd = class_exp2obd(sbi->ll_md_exp);
2062 CERROR("Invalid MDC connection handle "LPX64"\n",
2063 sbi->ll_md_exp->exp_handle.h_cookie);
2068 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp, sizeof ioc_data,
2071 obd = class_exp2obd(sbi->ll_dt_exp);
2073 CERROR("Invalid LOV connection handle "LPX64"\n",
2074 sbi->ll_dt_exp->exp_handle.h_cookie);
2080 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp, sizeof ioc_data,
2083 /* Really, we'd like to wait until there are no requests outstanding,
2084 * and then continue. For now, we just invalidate the requests,
2085 * schedule, and hope.
2092 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2094 struct ll_sb_info *sbi = ll_s2sbi(sb);
2098 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2099 read_only = *flags & MS_RDONLY;
2100 err = obd_set_info_async(sbi->ll_md_exp,
2101 sizeof(KEY_READ_ONLY) - 1,
2102 KEY_READ_ONLY, sizeof(read_only),
2105 CERROR("Failed to change the read-only flag during "
2106 "remount: %d\n", err);
2111 sb->s_flags |= MS_RDONLY;
2113 sb->s_flags &= ~MS_RDONLY;
2118 int ll_prep_inode(struct inode **inode,
2119 struct ptlrpc_request *req,
2120 struct super_block *sb)
2122 struct ll_sb_info *sbi = NULL;
2123 struct lustre_md md;
2127 LASSERT(*inode || sb);
2128 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2129 prune_deathrow(sbi, 1);
2130 memset(&md, 0, sizeof(struct lustre_md));
2132 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2133 sbi->ll_md_exp, &md);
2138 ll_update_inode(*inode, &md);
2140 LASSERT(sb != NULL);
2143 * At this point server returns to client's same fid as client
2144 * generated for creating. So using ->fid1 is okay here.
2146 LASSERT(fid_is_sane(&md.body->fid1));
2148 *inode = ll_iget(sb, ll_fid_build_ino(sbi, &md.body->fid1), &md);
2149 if (*inode == NULL || is_bad_inode(*inode)) {
2151 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2152 #ifdef CONFIG_FS_POSIX_ACL
2154 posix_acl_release(md.posix_acl);
2155 md.posix_acl = NULL;
2159 CERROR("new_inode -fatal: rc %d\n", rc);
2164 rc = obd_checkmd(sbi->ll_dt_exp, sbi->ll_md_exp,
2165 ll_i2info(*inode)->lli_smd);
2167 md_free_lustre_md(sbi->ll_md_exp, &md);
2171 char *llap_origins[] = {
2172 [LLAP_ORIGIN_UNKNOWN] = "--",
2173 [LLAP_ORIGIN_READPAGE] = "rp",
2174 [LLAP_ORIGIN_READAHEAD] = "ra",
2175 [LLAP_ORIGIN_COMMIT_WRITE] = "cw",
2176 [LLAP_ORIGIN_WRITEPAGE] = "wp",
2177 [LLAP_ORIGIN_LOCKLESS_IO] = "ls"
2180 struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi,
2181 struct list_head *list)
2183 struct ll_async_page *llap;
2184 struct list_head *pos;
2186 list_for_each(pos, list) {
2187 if (pos == &sbi->ll_pglist)
2189 llap = list_entry(pos, struct ll_async_page, llap_pglist_item);
2190 if (llap->llap_page == NULL)
2198 int ll_obd_statfs(struct inode *inode, void *arg)
2200 struct ll_sb_info *sbi = NULL;
2201 struct obd_export *exp;
2203 struct obd_ioctl_data *data = NULL;
2207 if (!inode || !(sbi = ll_i2sbi(inode)))
2208 GOTO(out_statfs, rc = -EINVAL);
2210 rc = obd_ioctl_getdata(&buf, &len, arg);
2212 GOTO(out_statfs, rc);
2215 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2216 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2217 GOTO(out_statfs, rc = -EINVAL);
2219 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2220 if (type == LL_STATFS_MDC)
2221 exp = sbi->ll_md_exp;
2222 else if (type == LL_STATFS_LOV)
2223 exp = sbi->ll_dt_exp;
2225 GOTO(out_statfs, rc = -ENODEV);
2227 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2229 GOTO(out_statfs, rc);
2232 obd_ioctl_freedata(buf, len);
2236 int ll_process_config(struct lustre_cfg *lcfg)
2240 struct lprocfs_static_vars lvars;
2244 lprocfs_llite_init_vars(&lvars);
2246 /* The instance name contains the sb: lustre-client-aacfe000 */
2247 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2248 if (!ptr || !*(++ptr))
2250 if (sscanf(ptr, "%lx", &x) != 1)
2253 /* This better be a real Lustre superblock! */
2254 LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2256 /* Note we have not called client_common_fill_super yet, so
2257 proc fns must be able to handle that! */
2258 rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
2263 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2264 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2265 struct inode *i1, struct inode *i2,
2266 const char *name, int namelen,
2267 int mode, __u32 opc, void *data)
2269 LASSERT(i1 != NULL);
2271 if (namelen > ll_i2sbi(i1)->ll_namelen)
2272 return ERR_PTR(-ENAMETOOLONG);
2274 if (op_data == NULL)
2275 OBD_ALLOC_PTR(op_data);
2277 if (op_data == NULL)
2278 return ERR_PTR(-ENOMEM);
2280 ll_i2gids(op_data->op_suppgids, i1, i2);
2281 op_data->op_fid1 = *ll_inode2fid(i1);
2282 op_data->op_capa1 = ll_mdscapa_get(i1);
2285 op_data->op_fid2 = *ll_inode2fid(i2);
2286 op_data->op_capa2 = ll_mdscapa_get(i2);
2288 fid_zero(&op_data->op_fid2);
2289 op_data->op_capa2 = NULL;
2292 op_data->op_name = name;
2293 op_data->op_namelen = namelen;
2294 op_data->op_mode = mode;
2295 op_data->op_mod_time = cfs_time_current_sec();
2296 op_data->op_fsuid = current->fsuid;
2297 op_data->op_fsgid = current->fsgid;
2298 op_data->op_cap = current->cap_effective;
2299 op_data->op_bias = MDS_CHECK_SPLIT;
2300 op_data->op_opc = opc;
2301 op_data->op_mds = 0;
2302 op_data->op_data = data;
2307 void ll_finish_md_op_data(struct md_op_data *op_data)
2309 capa_put(op_data->op_capa1);
2310 capa_put(op_data->op_capa2);
2311 OBD_FREE_PTR(op_data);