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 "llite_internal.h"
41 cfs_mem_cache_t *ll_file_data_slab;
43 LIST_HEAD(ll_super_blocks);
44 spinlock_t ll_sb_lock = SPIN_LOCK_UNLOCKED;
46 extern struct address_space_operations ll_aops;
47 extern struct address_space_operations ll_dir_aops;
50 #define log2(n) ffz(~(n))
54 static struct ll_sb_info *ll_init_sbi(void)
56 struct ll_sb_info *sbi = NULL;
61 OBD_ALLOC(sbi, sizeof(*sbi));
65 spin_lock_init(&sbi->ll_lock);
66 spin_lock_init(&sbi->ll_lco.lco_lock);
67 spin_lock_init(&sbi->ll_pp_extent_lock);
68 spin_lock_init(&sbi->ll_process_lock);
69 sbi->ll_rw_stats_on = 0;
70 INIT_LIST_HEAD(&sbi->ll_pglist);
71 if (num_physpages >> (20 - CFS_PAGE_SHIFT) < 512)
72 sbi->ll_async_page_max = num_physpages / 2;
74 sbi->ll_async_page_max = (num_physpages / 4) * 3;
75 sbi->ll_ra_info.ra_max_pages = min(num_physpages / 8,
76 SBI_DEFAULT_READAHEAD_MAX);
77 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
78 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
80 INIT_LIST_HEAD(&sbi->ll_conn_chain);
81 INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
83 ll_generate_random_uuid(uuid);
84 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
85 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
87 spin_lock(&ll_sb_lock);
88 list_add_tail(&sbi->ll_list, &ll_super_blocks);
89 spin_unlock(&ll_sb_lock);
91 #ifdef ENABLE_LLITE_CHECKSUM
92 sbi->ll_flags |= LL_SBI_CHECKSUM;
95 #ifdef HAVE_LRU_RESIZE_SUPPORT
96 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
99 #ifdef HAVE_EXPORT___IGET
100 INIT_LIST_HEAD(&sbi->ll_deathrow);
101 spin_lock_init(&sbi->ll_deathrow_lock);
103 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
104 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_r_hist.oh_lock);
105 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_w_hist.oh_lock);
111 void ll_free_sbi(struct super_block *sb)
113 struct ll_sb_info *sbi = ll_s2sbi(sb);
117 spin_lock(&ll_sb_lock);
118 list_del(&sbi->ll_list);
119 spin_unlock(&ll_sb_lock);
120 OBD_FREE(sbi, sizeof(*sbi));
125 static struct dentry_operations ll_d_root_ops = {
126 #ifdef DCACHE_LUSTRE_INVALID
127 .d_compare = ll_dcompare,
131 /* Initialize the default and maximum LOV EA and cookie sizes. This allows
132 * us to make MDS RPCs with large enough reply buffers to hold the
133 * maximum-sized (= maximum striped) EA and cookie without having to
134 * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
135 static int ll_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
137 struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC };
138 __u32 valsize = sizeof(struct lov_desc);
139 int rc, easize, def_easize, cookiesize;
140 struct lov_desc desc;
144 rc = obd_get_info(dt_exp, strlen(KEY_LOVDESC) + 1, KEY_LOVDESC,
149 stripes = min(desc.ld_tgt_count, (__u32)LOV_MAX_STRIPE_COUNT);
150 lsm.lsm_stripe_count = stripes;
151 easize = obd_size_diskmd(dt_exp, &lsm);
153 lsm.lsm_stripe_count = desc.ld_default_stripe_count;
154 def_easize = obd_size_diskmd(dt_exp, &lsm);
156 cookiesize = stripes * sizeof(struct llog_cookie);
158 CDEBUG(D_HA, "updating max_mdsize/max_cookiesize: %d/%d\n",
161 rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize);
165 static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
167 struct inode *root = 0;
168 struct ll_sb_info *sbi = ll_s2sbi(sb);
169 struct obd_device *obd;
170 struct lu_fid rootfid;
171 struct obd_capa *oc = NULL;
172 struct obd_statfs osfs;
173 struct ptlrpc_request *request = NULL;
174 struct lustre_handle dt_conn = {0, };
175 struct lustre_handle md_conn = {0, };
176 struct obd_connect_data *data = NULL;
177 struct lustre_md lmd;
179 int size, err, checksum;
182 obd = class_name2obd(md);
184 CERROR("MD %s: not setup or attached\n", md);
192 if (proc_lustre_fs_root) {
193 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
196 CERROR("could not register mount in /proc/lustre");
199 /* indicate the features supported by this client */
200 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
201 OBD_CONNECT_JOIN | OBD_CONNECT_ATTRFID |
202 OBD_CONNECT_VERSION | OBD_CONNECT_MDS_CAPA |
203 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_CANCELSET|
206 #ifdef HAVE_LRU_RESIZE_SUPPORT
207 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
208 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
210 #ifdef CONFIG_FS_POSIX_ACL
211 data->ocd_connect_flags |= OBD_CONNECT_ACL;
213 data->ocd_ibits_known = MDS_INODELOCK_FULL;
214 data->ocd_version = LUSTRE_VERSION_CODE;
216 if (sb->s_flags & MS_RDONLY)
217 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
218 if (sbi->ll_flags & LL_SBI_USER_XATTR)
219 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
221 #ifdef HAVE_MS_FLOCK_LOCK
222 /* force vfs to use lustre handler for flock() calls - bug 10743 */
223 sb->s_flags |= MS_FLOCK_LOCK;
226 if (sbi->ll_flags & LL_SBI_FLOCK)
227 sbi->ll_fop = &ll_file_operations_flock;
228 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
229 sbi->ll_fop = &ll_file_operations;
231 sbi->ll_fop = &ll_file_operations_noflock;
234 data->ocd_connect_flags |= OBD_CONNECT_REAL;
235 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
236 data->ocd_connect_flags &= ~OBD_CONNECT_LCL_CLIENT;
237 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT;
239 data->ocd_connect_flags &= ~OBD_CONNECT_RMT_CLIENT;
240 data->ocd_connect_flags |= OBD_CONNECT_LCL_CLIENT;
243 err = obd_connect(NULL, &md_conn, obd, &sbi->ll_sb_uuid, data, NULL);
245 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
246 "recovery, of which this client is not a "
247 "part. Please wait for recovery to complete,"
248 " abort, or time out.\n", md);
251 CERROR("cannot connect to %s: rc = %d\n", md, err);
254 sbi->ll_md_exp = class_conn2export(&md_conn);
256 err = obd_fid_init(sbi->ll_md_exp);
258 CERROR("Can't init metadata layer FID infrastructure, "
263 err = obd_statfs(obd, &osfs, cfs_time_current_64() - HZ, 0);
265 GOTO(out_md_fid, err);
267 size = sizeof(*data);
268 err = obd_get_info(sbi->ll_md_exp, strlen(KEY_CONN_DATA),
269 KEY_CONN_DATA, &size, data);
271 CERROR("Get connect data failed: %d \n", err);
275 LASSERT(osfs.os_bsize);
276 sb->s_blocksize = osfs.os_bsize;
277 sb->s_blocksize_bits = log2(osfs.os_bsize);
278 sb->s_magic = LL_SUPER_MAGIC;
280 /* for bug 11559. in $LINUX/fs/read_write.c, function do_sendfile():
281 * retval = in_file->f_op->sendfile(...);
283 * retval = -EOVERFLOW;
285 * it will check if *ppos is greater than max. However, max equals to
286 * s_maxbytes, which is a negative integer in a x86_64 box since loff_t
287 * has been defined as a signed long long ineger in linux kernel. */
288 #if BITS_PER_LONG == 64
289 sb->s_maxbytes = PAGE_CACHE_MAXBYTES >> 1;
291 sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
293 sbi->ll_namelen = osfs.os_namelen;
294 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
296 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
297 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
298 LCONSOLE_INFO("Disabling user_xattr feature because "
299 "it is not supported on the server\n");
300 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
303 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
305 sb->s_flags |= MS_POSIXACL;
307 sbi->ll_flags |= LL_SBI_ACL;
309 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
311 sb->s_flags &= ~MS_POSIXACL;
313 sbi->ll_flags &= ~LL_SBI_ACL;
316 if (data->ocd_connect_flags & OBD_CONNECT_JOIN)
317 sbi->ll_flags |= LL_SBI_JOIN;
319 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
320 if (!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT)) {
321 /* sometimes local client claims to be remote, but mdt
322 * will disagree when client gss not applied. */
323 LCONSOLE_INFO("client claims to be remote, but server "
324 "rejected, forced to be local.\n");
325 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
328 if (!(data->ocd_connect_flags & OBD_CONNECT_LCL_CLIENT)) {
329 /* with gss applied, remote client can not claim to be
330 * local, so mdt maybe force client to be remote. */
331 LCONSOLE_INFO("client claims to be local, but server "
332 "rejected, forced to be remote.\n");
333 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
337 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
338 LCONSOLE_INFO("client enabled MDS capability!\n");
339 sbi->ll_flags |= LL_SBI_MDS_CAPA;
342 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
343 LCONSOLE_INFO("client enabled OSS capability!\n");
344 sbi->ll_flags |= LL_SBI_OSS_CAPA;
347 sbi->ll_sdev_orig = sb->s_dev;
348 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
349 /* We set sb->s_dev equal on all lustre clients in order to support
350 * NFS export clustering. NFSD requires that the FSID be the same
352 /* s_dev is also used in lt_compare() to compare two fs, but that is
353 * only a node-local comparison. */
355 /* XXX: this will not work with LMV */
356 sb->s_dev = get_uuid2int(sbi2mdc(sbi)->cl_target_uuid.uuid,
357 strlen(sbi2mdc(sbi)->cl_target_uuid.uuid));
360 obd = class_name2obd(dt);
362 CERROR("DT %s: not setup or attached\n", dt);
363 GOTO(out_md_fid, err = -ENODEV);
366 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
367 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
368 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID;
369 if (sbi->ll_flags & LL_SBI_OSS_CAPA)
370 data->ocd_connect_flags |= OBD_CONNECT_OSS_CAPA;
372 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
373 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
374 * disabled by default, because it can still be enabled on the
375 * fly via /proc. As a consequence, we still need to come to an
376 * agreement on the supported algorithms at connect time */
377 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
379 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
380 data->ocd_cksum_types = OBD_CKSUM_ADLER;
382 /* send the list of supported checksum types */
383 data->ocd_cksum_types = OBD_CKSUM_ALL;
386 #ifdef HAVE_LRU_RESIZE_SUPPORT
387 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
389 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
390 "ocd_grant: %d\n", data->ocd_connect_flags,
391 data->ocd_version, data->ocd_grant);
393 obd->obd_upcall.onu_owner = &sbi->ll_lco;
394 obd->obd_upcall.onu_upcall = ll_ocd_update;
395 data->ocd_brw_size = PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT;
397 err = obd_connect(NULL, &dt_conn, obd, &sbi->ll_sb_uuid, data, NULL);
399 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
400 "recovery, of which this client is not a "
401 "part. Please wait for recovery to "
402 "complete, abort, or time out.\n", dt);
403 GOTO(out_md_fid, err);
405 CERROR("Cannot connect to %s: rc = %d\n", dt, err);
406 GOTO(out_md_fid, err);
409 sbi->ll_dt_exp = class_conn2export(&dt_conn);
411 err = obd_fid_init(sbi->ll_dt_exp);
413 CERROR("Can't init data layer FID infrastructure, "
418 spin_lock(&sbi->ll_lco.lco_lock);
419 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
420 spin_unlock(&sbi->ll_lco.lco_lock);
422 ll_init_ea_size(sbi->ll_md_exp, sbi->ll_dt_exp);
424 err = obd_prep_async_page(sbi->ll_dt_exp, NULL, NULL, NULL,
425 0, NULL, NULL, NULL);
427 LCONSOLE_ERROR_MSG(0x151, "There are no OST's in this "
428 "filesystem. There must be at least one "
429 "active OST for a client to start.\n");
430 GOTO(out_dt_fid, err);
433 if (!ll_async_page_slab) {
434 ll_async_page_slab_size =
435 size_round(sizeof(struct ll_async_page)) + err;
436 ll_async_page_slab = cfs_mem_cache_create("ll_async_page",
437 ll_async_page_slab_size,
439 if (!ll_async_page_slab)
440 GOTO(out_dt_fid, err = -ENOMEM);
443 err = md_getstatus(sbi->ll_md_exp, &rootfid, &oc);
445 CERROR("cannot mds_connect: rc = %d\n", err);
446 GOTO(out_dt_fid, err);
448 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&rootfid));
449 sbi->ll_root_fid = rootfid;
451 sb->s_op = &lustre_super_operations;
452 sb->s_export_op = &lustre_export_operations;
455 * XXX: move this to after cbd setup? */
456 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
457 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
458 valid |= OBD_MD_FLRMTPERM;
459 else if (sbi->ll_flags & LL_SBI_ACL)
460 valid |= OBD_MD_FLACL;
462 err = md_getattr(sbi->ll_md_exp, &rootfid, oc, valid, 0, &request);
466 CERROR("md_getattr failed for root: rc = %d\n", err);
467 GOTO(out_dt_fid, err);
469 memset(&lmd, 0, sizeof(lmd));
470 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
471 sbi->ll_md_exp, &lmd);
473 CERROR("failed to understand root inode md: rc = %d\n", err);
474 ptlrpc_req_finished (request);
475 GOTO(out_dt_fid, err);
478 LASSERT(fid_is_sane(&sbi->ll_root_fid));
479 root = ll_iget(sb, ll_fid_build_ino(sbi, &sbi->ll_root_fid), &lmd);
480 md_free_lustre_md(sbi->ll_md_exp, &lmd);
481 ptlrpc_req_finished(request);
483 if (root == NULL || is_bad_inode(root)) {
485 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
486 #ifdef CONFIG_FS_POSIX_ACL
488 posix_acl_release(lmd.posix_acl);
489 lmd.posix_acl = NULL;
492 CERROR("lustre_lite: bad iget4 for root\n");
493 GOTO(out_root, err = -EBADF);
496 err = ll_close_thread_start(&sbi->ll_lcq);
498 CERROR("cannot start close thread: rc %d\n", err);
502 #ifdef CONFIG_FS_POSIX_ACL
503 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
504 rct_init(&sbi->ll_rct);
505 et_init(&sbi->ll_et);
509 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
510 err = obd_set_info_async(sbi->ll_dt_exp, strlen("checksum"),"checksum",
511 sizeof(checksum), &checksum, NULL);
513 sb->s_root = d_alloc_root(root);
515 OBD_FREE(data, sizeof(*data));
516 sb->s_root->d_op = &ll_d_root_ops;
522 obd_fid_fini(sbi->ll_dt_exp);
524 obd_disconnect(sbi->ll_dt_exp);
525 sbi->ll_dt_exp = NULL;
527 obd_fid_fini(sbi->ll_md_exp);
529 obd_disconnect(sbi->ll_md_exp);
530 sbi->ll_md_exp = NULL;
534 lprocfs_unregister_mountpoint(sbi);
538 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
542 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
544 rc = obd_get_info(sbi->ll_md_exp, strlen("max_easize"), "max_easize",
547 CERROR("Get max mdsize error rc %d \n", rc);
552 void ll_dump_inode(struct inode *inode)
554 struct list_head *tmp;
555 int dentry_count = 0;
557 LASSERT(inode != NULL);
559 list_for_each(tmp, &inode->i_dentry)
562 CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
563 inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
564 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
567 void lustre_dump_dentry(struct dentry *dentry, int recur)
569 struct list_head *tmp;
572 LASSERT(dentry != NULL);
574 list_for_each(tmp, &dentry->d_subdirs)
577 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
578 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
579 dentry->d_name.len, dentry->d_name.name,
580 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
581 dentry->d_parent, dentry->d_inode, atomic_read(&dentry->d_count),
582 dentry->d_flags, dentry->d_fsdata, subdirs);
583 if (dentry->d_inode != NULL)
584 ll_dump_inode(dentry->d_inode);
589 list_for_each(tmp, &dentry->d_subdirs) {
590 struct dentry *d = list_entry(tmp, struct dentry, d_child);
591 lustre_dump_dentry(d, recur - 1);
595 #ifdef HAVE_EXPORT___IGET
596 static void prune_dir_dentries(struct inode *inode)
598 struct dentry *dentry, *prev = NULL;
600 /* due to lustre specific logic, a directory
601 * can have few dentries - a bug from VFS POV */
603 spin_lock(&dcache_lock);
604 if (!list_empty(&inode->i_dentry)) {
605 dentry = list_entry(inode->i_dentry.prev,
606 struct dentry, d_alias);
607 /* in order to prevent infinite loops we
608 * break if previous dentry is busy */
609 if (dentry != prev) {
612 spin_unlock(&dcache_lock);
614 /* try to kill all child dentries */
616 shrink_dcache_parent(dentry);
617 unlock_dentry(dentry);
620 /* now try to get rid of current dentry */
621 d_prune_aliases(inode);
625 spin_unlock(&dcache_lock);
628 static void prune_deathrow_one(struct ll_inode_info *lli)
630 struct inode *inode = ll_info2i(lli);
632 /* first, try to drop any dentries - they hold a ref on the inode */
633 if (S_ISDIR(inode->i_mode))
634 prune_dir_dentries(inode);
636 d_prune_aliases(inode);
639 /* if somebody still uses it, leave it */
640 LASSERT(atomic_read(&inode->i_count) > 0);
641 if (atomic_read(&inode->i_count) > 1)
644 CDEBUG(D_INODE, "inode %lu/%u(%d) looks a good candidate for prune\n",
645 inode->i_ino,inode->i_generation, atomic_read(&inode->i_count));
647 /* seems nobody uses it anymore */
655 static void prune_deathrow(struct ll_sb_info *sbi, int try)
657 struct ll_inode_info *lli;
661 if (need_resched() && try)
665 if (!spin_trylock(&sbi->ll_deathrow_lock))
668 spin_lock(&sbi->ll_deathrow_lock);
673 if (!list_empty(&sbi->ll_deathrow)) {
674 lli = list_entry(sbi->ll_deathrow.next,
675 struct ll_inode_info,
677 list_del_init(&lli->lli_dead_list);
678 if (!list_empty(&sbi->ll_deathrow))
681 spin_unlock(&sbi->ll_deathrow_lock);
684 prune_deathrow_one(lli);
686 } while (empty == 0);
688 #else /* !HAVE_EXPORT___IGET */
689 #define prune_deathrow(sbi, try) do {} while (0)
690 #endif /* HAVE_EXPORT___IGET */
692 void client_common_put_super(struct super_block *sb)
694 struct ll_sb_info *sbi = ll_s2sbi(sb);
697 #ifdef CONFIG_FS_POSIX_ACL
698 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
699 et_fini(&sbi->ll_et);
700 rct_fini(&sbi->ll_rct);
704 obd_cancel_unused(sbi->ll_dt_exp, NULL, 0, NULL);
706 ll_close_thread_shutdown(sbi->ll_lcq);
708 /* destroy inodes in deathrow */
709 prune_deathrow(sbi, 0);
711 list_del(&sbi->ll_conn_chain);
713 obd_fid_fini(sbi->ll_dt_exp);
714 obd_disconnect(sbi->ll_dt_exp);
715 sbi->ll_dt_exp = NULL;
717 lprocfs_unregister_mountpoint(sbi);
719 obd_fid_fini(sbi->ll_md_exp);
720 obd_disconnect(sbi->ll_md_exp);
721 sbi->ll_md_exp = NULL;
726 void ll_kill_super(struct super_block *sb)
728 struct ll_sb_info *sbi;
733 if (!(sb->s_flags & MS_ACTIVE))
737 /* we need restore s_dev from changed for clustred NFS before put_super
738 * because new kernels have cached s_dev and change sb->s_dev in
739 * put_super not affected real removing devices */
741 sb->s_dev = sbi->ll_sdev_orig;
745 char *ll_read_opt(const char *opt, char *data)
751 CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
752 if (strncmp(opt, data, strlen(opt)))
754 if ((value = strchr(data, '=')) == NULL)
758 OBD_ALLOC(retval, strlen(value) + 1);
760 CERROR("out of memory!\n");
764 memcpy(retval, value, strlen(value)+1);
765 CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
769 static inline int ll_set_opt(const char *opt, char *data, int fl)
771 if (strncmp(opt, data, strlen(opt)) != 0)
777 /* non-client-specific mount options are parsed in lmd_parse */
778 static int ll_options(char *options, int *flags)
781 char *s1 = options, *s2;
787 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
790 CDEBUG(D_SUPER, "next opt=%s\n", s1);
791 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
796 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
801 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
806 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
811 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
816 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
821 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
823 /* Ignore deprecated mount option. The client will
824 * always try to mount with ACL support, whether this
825 * is used depends on whether server supports it. */
828 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
832 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
838 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
843 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
848 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
853 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
859 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
865 s2 = strchr(s1, ',');
873 void ll_lli_init(struct ll_inode_info *lli)
875 lli->lli_inode_magic = LLI_INODE_MAGIC;
876 sema_init(&lli->lli_size_sem, 1);
877 sema_init(&lli->lli_write_sem, 1);
879 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
880 spin_lock_init(&lli->lli_lock);
881 INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
882 INIT_LIST_HEAD(&lli->lli_close_list);
883 lli->lli_inode_magic = LLI_INODE_MAGIC;
884 sema_init(&lli->lli_och_sem, 1);
885 lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
886 lli->lli_mds_exec_och = NULL;
887 lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
888 lli->lli_open_fd_exec_count = 0;
889 INIT_LIST_HEAD(&lli->lli_dead_list);
890 lli->lli_remote_perms = NULL;
891 lli->lli_rmtperm_utime = 0;
892 sema_init(&lli->lli_rmtperm_sem, 1);
893 INIT_LIST_HEAD(&lli->lli_oss_capas);
896 int ll_fill_super(struct super_block *sb)
898 struct lustre_profile *lprof;
899 struct lustre_sb_info *lsi = s2lsi(sb);
900 struct ll_sb_info *sbi;
901 char *dt = NULL, *md = NULL;
902 char *profilenm = get_profile_name(sb);
903 struct config_llog_instance cfg = {0, };
904 char ll_instance[sizeof(sb) * 2 + 1];
908 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
912 sb->s_type->fs_flags |= FS_RENAME_DOES_D_MOVE;
913 /* client additional sb info */
914 lsi->lsi_llsbi = sbi = ll_init_sbi();
920 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
924 /* Generate a string unique to this super, in case some joker tries
925 to mount the same fs at two mount points.
926 Use the address of the super itself.*/
927 sprintf(ll_instance, "%p", sb);
928 cfg.cfg_instance = ll_instance;
929 cfg.cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
931 /* set up client obds */
932 err = lustre_process_log(sb, profilenm, &cfg);
934 CERROR("Unable to process log: %d\n", err);
938 lprof = class_get_profile(profilenm);
940 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
941 " read from the MGS. Does that filesystem "
942 "exist?\n", profilenm);
943 GOTO(out_free, err = -EINVAL);
945 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
946 lprof->lp_md, lprof->lp_dt);
948 OBD_ALLOC(dt, strlen(lprof->lp_dt) +
949 strlen(ll_instance) + 2);
951 GOTO(out_free, err = -ENOMEM);
952 sprintf(dt, "%s-%s", lprof->lp_dt, ll_instance);
954 OBD_ALLOC(md, strlen(lprof->lp_md) +
955 strlen(ll_instance) + 2);
957 GOTO(out_free, err = -ENOMEM);
958 sprintf(md, "%s-%s", lprof->lp_md, ll_instance);
960 /* connections, registrations, sb setup */
961 err = client_common_fill_super(sb, md, dt);
965 OBD_FREE(md, strlen(md) + 1);
967 OBD_FREE(dt, strlen(dt) + 1);
971 LCONSOLE_WARN("Client %s has started\n", profilenm);
974 } /* ll_fill_super */
977 void ll_put_super(struct super_block *sb)
979 struct config_llog_instance cfg;
980 char ll_instance[sizeof(sb) * 2 + 1];
981 struct obd_device *obd;
982 struct lustre_sb_info *lsi = s2lsi(sb);
983 struct ll_sb_info *sbi = ll_s2sbi(sb);
984 char *profilenm = get_profile_name(sb);
988 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
990 ll_print_capa_stat(sbi);
992 sprintf(ll_instance, "%p", sb);
993 cfg.cfg_instance = ll_instance;
994 lustre_end_log(sb, NULL, &cfg);
996 if (sbi->ll_md_exp) {
997 obd = class_exp2obd(sbi->ll_md_exp);
999 force = obd->obd_force;
1002 /* We need to set force before the lov_disconnect in
1003 lustre_common_put_super, since l_d cleans up osc's as well. */
1006 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1008 obd->obd_force = force;
1013 /* Only if client_common_fill_super succeeded */
1014 client_common_put_super(sb);
1017 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1018 class_manual_cleanup(obd);
1022 class_del_profile(profilenm);
1025 lsi->lsi_llsbi = NULL;
1027 lustre_common_put_super(sb);
1029 LCONSOLE_WARN("client %s umount complete\n", ll_instance);
1034 } /* client_put_super */
1036 #ifdef HAVE_REGISTER_CACHE
1037 #include <linux/cache_def.h>
1038 #ifdef HAVE_CACHE_RETURN_INT
1043 ll_shrink_cache(int priority, unsigned int gfp_mask)
1045 struct ll_sb_info *sbi;
1048 list_for_each_entry(sbi, &ll_super_blocks, ll_list)
1049 count += llap_shrink_cache(sbi, priority);
1051 #ifdef HAVE_CACHE_RETURN_INT
1056 struct cache_definition ll_cache_definition = {
1057 .name = "llap_cache",
1058 .shrink = ll_shrink_cache
1060 #endif /* HAVE_REGISTER_CACHE */
1062 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
1064 struct inode *inode = NULL;
1065 /* NOTE: we depend on atomic igrab() -bzzz */
1066 lock_res_and_lock(lock);
1067 if (lock->l_ast_data) {
1068 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
1069 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1070 inode = igrab(lock->l_ast_data);
1072 inode = lock->l_ast_data;
1073 ldlm_lock_debug(NULL, inode->i_state & I_FREEING ?
1075 lock, __FILE__, __func__, __LINE__,
1076 "l_ast_data %p is bogus: magic %08x",
1077 lock->l_ast_data, lli->lli_inode_magic);
1081 unlock_res_and_lock(lock);
1085 static int null_if_equal(struct ldlm_lock *lock, void *data)
1087 if (data == lock->l_ast_data) {
1088 lock->l_ast_data = NULL;
1090 if (lock->l_req_mode != lock->l_granted_mode)
1091 LDLM_ERROR(lock,"clearing inode with ungranted lock");
1094 return LDLM_ITER_CONTINUE;
1097 void ll_clear_inode(struct inode *inode)
1099 struct ll_inode_info *lli = ll_i2info(inode);
1100 struct ll_sb_info *sbi = ll_i2sbi(inode);
1103 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1104 inode->i_generation, inode);
1106 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1107 md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
1108 null_if_equal, inode);
1110 LASSERT(!lli->lli_open_fd_write_count);
1111 LASSERT(!lli->lli_open_fd_read_count);
1112 LASSERT(!lli->lli_open_fd_exec_count);
1114 if (lli->lli_mds_write_och)
1115 ll_md_real_close(inode, FMODE_WRITE);
1116 if (lli->lli_mds_exec_och)
1117 ll_md_real_close(inode, FMODE_EXEC);
1118 if (lli->lli_mds_read_och)
1119 ll_md_real_close(inode, FMODE_READ);
1122 obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
1123 null_if_equal, inode);
1125 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1126 lli->lli_smd = NULL;
1129 if (lli->lli_symlink_name) {
1130 OBD_FREE(lli->lli_symlink_name,
1131 strlen(lli->lli_symlink_name) + 1);
1132 lli->lli_symlink_name = NULL;
1135 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1136 LASSERT(lli->lli_posix_acl == NULL);
1137 if (lli->lli_remote_perms) {
1138 free_rmtperm_hash(lli->lli_remote_perms);
1139 lli->lli_remote_perms = NULL;
1142 #ifdef CONFIG_FS_POSIX_ACL
1143 else if (lli->lli_posix_acl) {
1144 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1145 LASSERT(lli->lli_remote_perms == NULL);
1146 posix_acl_release(lli->lli_posix_acl);
1147 lli->lli_posix_acl = NULL;
1150 lli->lli_inode_magic = LLI_INODE_DEAD;
1152 #ifdef HAVE_EXPORT___IGET
1153 spin_lock(&sbi->ll_deathrow_lock);
1154 list_del_init(&lli->lli_dead_list);
1155 spin_unlock(&sbi->ll_deathrow_lock);
1157 ll_clear_inode_capas(inode);
1162 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
1163 struct md_open_data **mod)
1165 struct lustre_md md;
1166 struct ll_sb_info *sbi = ll_i2sbi(inode);
1167 struct ptlrpc_request *request = NULL;
1171 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1172 LUSTRE_OPC_ANY, NULL);
1173 if (IS_ERR(op_data))
1174 RETURN(PTR_ERR(op_data));
1176 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1179 ptlrpc_req_finished(request);
1180 if (rc == -ENOENT) {
1182 /* Unlinked special device node? Or just a race?
1183 * Pretend we done everything. */
1184 if (!S_ISREG(inode->i_mode) &&
1185 !S_ISDIR(inode->i_mode))
1186 rc = inode_setattr(inode, &op_data->op_attr);
1187 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1188 CERROR("md_setattr fails: rc = %d\n", rc);
1193 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1194 sbi->ll_md_exp, &md);
1196 ptlrpc_req_finished(request);
1200 /* We call inode_setattr to adjust timestamps.
1201 * If there is at least some data in file, we cleared ATTR_SIZE
1202 * above to avoid invoking vmtruncate, otherwise it is important
1203 * to call vmtruncate in inode_setattr to update inode->i_size
1205 rc = inode_setattr(inode, &op_data->op_attr);
1207 /* Extract epoch data if obtained. */
1208 op_data->op_handle = md.body->handle;
1209 op_data->op_ioepoch = md.body->ioepoch;
1211 ll_update_inode(inode, &md);
1212 ptlrpc_req_finished(request);
1217 /* Close IO epoch and send Size-on-MDS attribute update. */
1218 static int ll_setattr_done_writing(struct inode *inode,
1219 struct md_op_data *op_data,
1220 struct md_open_data *mod)
1222 struct ll_inode_info *lli = ll_i2info(inode);
1226 LASSERT(op_data != NULL);
1227 if (!S_ISREG(inode->i_mode))
1230 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1231 op_data->op_ioepoch, PFID(&lli->lli_fid));
1233 op_data->op_flags = MF_EPOCH_CLOSE | MF_SOM_CHANGE;
1234 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1235 if (rc == -EAGAIN) {
1236 /* MDS has instructed us to obtain Size-on-MDS attribute
1237 * from OSTs and send setattr to back to MDS. */
1238 rc = ll_sizeonmds_update(inode, mod, &op_data->op_handle,
1239 op_data->op_ioepoch);
1241 CERROR("inode %lu mdc truncate failed: rc = %d\n",
1247 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1248 * object(s) determine the file size and mtime. Otherwise, the MDS will
1249 * keep these values until such a time that objects are allocated for it.
1250 * We do the MDS operations first, as it is checking permissions for us.
1251 * We don't to the MDS RPC if there is nothing that we want to store there,
1252 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1253 * going to do an RPC anyways.
1255 * If we are doing a truncate, we will send the mtime and ctime updates
1256 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1257 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1260 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1262 struct ll_inode_info *lli = ll_i2info(inode);
1263 struct lov_stripe_md *lsm = lli->lli_smd;
1264 struct ll_sb_info *sbi = ll_i2sbi(inode);
1265 struct md_op_data *op_data = NULL;
1266 struct md_open_data *mod = NULL;
1267 int ia_valid = attr->ia_valid;
1268 int rc = 0, rc1 = 0;
1271 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
1273 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETATTR, 1);
1275 if (ia_valid & ATTR_SIZE) {
1276 if (attr->ia_size > ll_file_maxbytes(inode)) {
1277 CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1278 attr->ia_size, ll_file_maxbytes(inode));
1282 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1285 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1286 if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1287 if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
1291 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1292 if (attr->ia_valid & ATTR_CTIME) {
1293 attr->ia_ctime = CURRENT_TIME;
1294 attr->ia_valid |= ATTR_CTIME_SET;
1296 if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1297 attr->ia_atime = CURRENT_TIME;
1298 attr->ia_valid |= ATTR_ATIME_SET;
1300 if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1301 attr->ia_mtime = CURRENT_TIME;
1302 attr->ia_valid |= ATTR_MTIME_SET;
1304 if ((attr->ia_valid & ATTR_CTIME) && !(attr->ia_valid & ATTR_MTIME)) {
1305 /* To avoid stale mtime on mds, obtain it from ost and send
1307 rc = ll_glimpse_size(inode, 0);
1311 attr->ia_valid |= ATTR_MTIME_SET | ATTR_MTIME;
1312 attr->ia_mtime = inode->i_mtime;
1315 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1316 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1317 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1320 /* NB: ATTR_SIZE will only be set after this point if the size
1321 * resides on the MDS, ie, this file has no objects. */
1323 attr->ia_valid &= ~ATTR_SIZE;
1325 /* We always do an MDS RPC, even if we're only changing the size;
1326 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1328 OBD_ALLOC_PTR(op_data);
1329 if (op_data == NULL)
1332 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1334 /* Open epoch for truncate. */
1335 if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
1336 (ia_valid & ATTR_SIZE))
1337 op_data->op_flags = MF_EPOCH_OPEN;
1339 rc = ll_md_setattr(inode, op_data, &mod);
1343 if (op_data->op_ioepoch)
1344 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID" for "
1345 "truncate\n", op_data->op_ioepoch, PFID(&lli->lli_fid));
1347 if (!lsm || !S_ISREG(inode->i_mode)) {
1348 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1352 /* We really need to get our PW lock before we change inode->i_size.
1353 * If we don't we can race with other i_size updaters on our node, like
1354 * ll_file_read. We can also race with i_size propogation to other
1355 * nodes through dirtying and writeback of final cached pages. This
1356 * last one is especially bad for racing o_append users on other
1358 if (ia_valid & ATTR_SIZE) {
1359 ldlm_policy_data_t policy = { .l_extent = {attr->ia_size,
1361 struct lustre_handle lockh = { 0 };
1362 int err, ast_flags = 0;
1363 /* XXX when we fix the AST intents to pass the discard-range
1364 * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
1366 if (attr->ia_size == 0)
1367 ast_flags = LDLM_AST_DISCARD_DATA;
1369 UNLOCK_INODE_MUTEX(inode);
1370 UP_WRITE_I_ALLOC_SEM(inode);
1371 rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy, &lockh,
1373 LOCK_INODE_MUTEX(inode);
1374 DOWN_WRITE_I_ALLOC_SEM(inode);
1379 /* Only ll_inode_size_lock is taken at this level.
1380 * lov_stripe_lock() is grabbed by ll_truncate() only over
1381 * call to obd_adjust_kms(). If vmtruncate returns 0, then
1382 * ll_truncate dropped ll_inode_size_lock() */
1383 ll_inode_size_lock(inode, 0);
1384 rc = vmtruncate(inode, attr->ia_size);
1386 LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
1387 ll_inode_size_unlock(inode, 0);
1390 err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
1392 CERROR("ll_extent_unlock failed: %d\n", err);
1396 } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
1398 struct obd_info oinfo = { { { 0 } } };
1401 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
1402 inode->i_ino, LTIME_S(attr->ia_mtime));
1406 oa->o_id = lsm->lsm_object_id;
1407 oa->o_gr = lsm->lsm_object_gr;
1408 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1410 flags = OBD_MD_FLTYPE | OBD_MD_FLATIME |
1411 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
1412 OBD_MD_FLFID | OBD_MD_FLGENER |
1415 obdo_from_inode(oa, inode, flags);
1419 oinfo.oi_capa = ll_mdscapa_get(inode);
1421 /* XXX: this looks unnecessary now. */
1422 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1423 capa_put(oinfo.oi_capa);
1425 CERROR("obd_setattr_async fails: rc=%d\n", rc);
1434 if (op_data->op_ioepoch)
1435 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1436 ll_finish_md_op_data(op_data);
1438 return rc ? rc : rc1;
1441 int ll_setattr(struct dentry *de, struct iattr *attr)
1443 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1444 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1445 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1447 return ll_setattr_raw(de->d_inode, attr);
1450 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1451 __u64 max_age, __u32 flags)
1453 struct ll_sb_info *sbi = ll_s2sbi(sb);
1454 struct obd_statfs obd_osfs;
1458 rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, flags);
1460 CERROR("md_statfs fails: rc = %d\n", rc);
1464 osfs->os_type = sb->s_magic;
1466 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1467 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1469 rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
1470 &obd_osfs, max_age, flags);
1472 CERROR("obd_statfs fails: rc = %d\n", rc);
1476 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1477 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1480 osfs->os_bsize = obd_osfs.os_bsize;
1481 osfs->os_blocks = obd_osfs.os_blocks;
1482 osfs->os_bfree = obd_osfs.os_bfree;
1483 osfs->os_bavail = obd_osfs.os_bavail;
1485 /* If we don't have as many objects free on the OST as inodes
1486 * on the MDS, we reduce the total number of inodes to
1487 * compensate, so that the "inodes in use" number is correct.
1489 if (obd_osfs.os_ffree < osfs->os_ffree) {
1490 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1492 osfs->os_ffree = obd_osfs.os_ffree;
1497 #ifndef HAVE_STATFS_DENTRY_PARAM
1498 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1501 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1503 struct super_block *sb = de->d_sb;
1505 struct obd_statfs osfs;
1508 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1509 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1511 /* For now we will always get up-to-date statfs values, but in the
1512 * future we may allow some amount of caching on the client (e.g.
1513 * from QOS or lprocfs updates). */
1514 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - 1, 0);
1518 statfs_unpack(sfs, &osfs);
1520 /* We need to downshift for all 32-bit kernels, because we can't
1521 * tell if the kernel is being called via sys_statfs64() or not.
1522 * Stop before overflowing f_bsize - in which case it is better
1523 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1524 if (sizeof(long) < 8) {
1525 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1528 osfs.os_blocks >>= 1;
1529 osfs.os_bfree >>= 1;
1530 osfs.os_bavail >>= 1;
1534 sfs->f_blocks = osfs.os_blocks;
1535 sfs->f_bfree = osfs.os_bfree;
1536 sfs->f_bavail = osfs.os_bavail;
1541 void ll_inode_size_lock(struct inode *inode, int lock_lsm)
1543 struct ll_inode_info *lli;
1544 struct lov_stripe_md *lsm;
1546 lli = ll_i2info(inode);
1547 LASSERT(lli->lli_size_sem_owner != current);
1548 down(&lli->lli_size_sem);
1549 LASSERT(lli->lli_size_sem_owner == NULL);
1550 lli->lli_size_sem_owner = current;
1552 LASSERTF(lsm != NULL || lock_lsm == 0, "lsm %p, lock_lsm %d\n",
1555 lov_stripe_lock(lsm);
1558 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
1560 struct ll_inode_info *lli;
1561 struct lov_stripe_md *lsm;
1563 lli = ll_i2info(inode);
1565 LASSERTF(lsm != NULL || unlock_lsm == 0, "lsm %p, lock_lsm %d\n",
1568 lov_stripe_unlock(lsm);
1569 LASSERT(lli->lli_size_sem_owner == current);
1570 lli->lli_size_sem_owner = NULL;
1571 up(&lli->lli_size_sem);
1574 static void ll_replace_lsm(struct inode *inode, struct lov_stripe_md *lsm)
1576 struct ll_inode_info *lli = ll_i2info(inode);
1578 dump_lsm(D_INODE, lsm);
1579 dump_lsm(D_INODE, lli->lli_smd);
1580 LASSERTF(lsm->lsm_magic == LOV_MAGIC_JOIN,
1581 "lsm must be joined lsm %p\n", lsm);
1582 obd_free_memmd(ll_i2dtexp(inode), &lli->lli_smd);
1583 CDEBUG(D_INODE, "replace lsm %p to lli_smd %p for inode %lu%u(%p)\n",
1584 lsm, lli->lli_smd, inode->i_ino, inode->i_generation, inode);
1586 lli->lli_maxbytes = lsm->lsm_maxbytes;
1587 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1588 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1591 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1593 struct ll_inode_info *lli = ll_i2info(inode);
1594 struct mdt_body *body = md->body;
1595 struct lov_stripe_md *lsm = md->lsm;
1596 struct ll_sb_info *sbi = ll_i2sbi(inode);
1598 LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1600 if (lli->lli_smd == NULL) {
1601 if (lsm->lsm_magic != LOV_MAGIC &&
1602 lsm->lsm_magic != LOV_MAGIC_JOIN) {
1603 dump_lsm(D_ERROR, lsm);
1606 CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
1607 lsm, inode->i_ino, inode->i_generation, inode);
1608 /* ll_inode_size_lock() requires it is only called
1609 * with lli_smd != NULL or lock_lsm == 0 or we can
1610 * race between lock/unlock. bug 9547 */
1612 lli->lli_maxbytes = lsm->lsm_maxbytes;
1613 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1614 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1616 if (lli->lli_smd->lsm_magic == lsm->lsm_magic &&
1617 lli->lli_smd->lsm_stripe_count ==
1618 lsm->lsm_stripe_count) {
1619 if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
1620 CERROR("lsm mismatch for inode %ld\n",
1622 CERROR("lli_smd:\n");
1623 dump_lsm(D_ERROR, lli->lli_smd);
1625 dump_lsm(D_ERROR, lsm);
1629 ll_replace_lsm(inode, lsm);
1631 if (lli->lli_smd != lsm)
1632 obd_free_memmd(ll_i2dtexp(inode), &lsm);
1635 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1636 if (body->valid & OBD_MD_FLRMTPERM)
1637 ll_update_remote_perm(inode, md->remote_perm);
1639 #ifdef CONFIG_FS_POSIX_ACL
1640 else if (body->valid & OBD_MD_FLACL) {
1641 spin_lock(&lli->lli_lock);
1642 if (lli->lli_posix_acl)
1643 posix_acl_release(lli->lli_posix_acl);
1644 lli->lli_posix_acl = md->posix_acl;
1645 spin_unlock(&lli->lli_lock);
1648 if (body->valid & OBD_MD_FLATIME &&
1649 body->atime > LTIME_S(inode->i_atime))
1650 LTIME_S(inode->i_atime) = body->atime;
1652 /* mtime is always updated with ctime, but can be set in past.
1653 As write and utime(2) may happen within 1 second, and utime's
1654 mtime has a priority over write's one, so take mtime from mds
1655 for the same ctimes. */
1656 if (body->valid & OBD_MD_FLCTIME &&
1657 body->ctime >= LTIME_S(inode->i_ctime)) {
1658 LTIME_S(inode->i_ctime) = body->ctime;
1659 if (body->valid & OBD_MD_FLMTIME) {
1660 CDEBUG(D_INODE, "setting ino %lu mtime "
1661 "from %lu to "LPU64"\n", inode->i_ino,
1662 LTIME_S(inode->i_mtime), body->mtime);
1663 LTIME_S(inode->i_mtime) = body->mtime;
1666 if (body->valid & OBD_MD_FLMODE)
1667 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
1668 if (body->valid & OBD_MD_FLTYPE)
1669 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
1670 if (S_ISREG(inode->i_mode)) {
1671 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
1673 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1675 #ifdef HAVE_INODE_BLKSIZE
1676 inode->i_blksize = 1<<inode->i_blkbits;
1678 if (body->valid & OBD_MD_FLUID)
1679 inode->i_uid = body->uid;
1680 if (body->valid & OBD_MD_FLGID)
1681 inode->i_gid = body->gid;
1682 if (body->valid & OBD_MD_FLFLAGS)
1683 inode->i_flags = ll_ext_to_inode_flags(body->flags);
1684 if (body->valid & OBD_MD_FLNLINK)
1685 inode->i_nlink = body->nlink;
1686 if (body->valid & OBD_MD_FLRDEV)
1687 inode->i_rdev = old_decode_dev(body->rdev);
1689 if (body->valid & OBD_MD_FLID) {
1690 /* FID shouldn't be changed! */
1691 if (fid_is_sane(&lli->lli_fid)) {
1692 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
1693 "Trying to change FID "DFID
1694 " to the "DFID", inode %lu/%u(%p)\n",
1695 PFID(&lli->lli_fid), PFID(&body->fid1),
1696 inode->i_ino, inode->i_generation, inode);
1698 lli->lli_fid = body->fid1;
1701 LASSERT(fid_seq(&lli->lli_fid) != 0);
1703 if (body->valid & OBD_MD_FLSIZE) {
1704 if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
1705 S_ISREG(inode->i_mode) && lli->lli_smd) {
1706 struct lustre_handle lockh;
1709 /* As it is possible a blocking ast has been processed
1710 * by this time, we need to check there is an UPDATE
1711 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
1713 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
1716 if (lli->lli_flags & (LLIF_DONE_WRITING |
1717 LLIF_EPOCH_PENDING |
1719 CERROR("ino %lu flags %lu still has "
1720 "size authority! do not trust "
1721 "the size got from MDS\n",
1722 inode->i_ino, lli->lli_flags);
1724 /* Use old size assignment to avoid
1725 * deadlock bz14138 & bz14326 */
1726 inode->i_size = body->size;
1727 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
1729 ldlm_lock_decref(&lockh, mode);
1732 /* Use old size assignment to avoid
1733 * deadlock bz14138 & bz14326 */
1734 inode->i_size = body->size;
1737 if (body->valid & OBD_MD_FLBLOCKS)
1738 inode->i_blocks = body->blocks;
1741 if (body->valid & OBD_MD_FLMDSCAPA) {
1742 LASSERT(md->mds_capa);
1743 ll_add_capa(inode, md->mds_capa);
1745 if (body->valid & OBD_MD_FLOSSCAPA) {
1746 LASSERT(md->oss_capa);
1747 ll_add_capa(inode, md->oss_capa);
1751 static struct backing_dev_info ll_backing_dev_info = {
1752 .ra_pages = 0, /* No readahead */
1753 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12))
1754 .capabilities = 0, /* Does contribute to dirty memory */
1756 .memory_backed = 0, /* Does contribute to dirty memory */
1760 void ll_read_inode2(struct inode *inode, void *opaque)
1762 struct lustre_md *md = opaque;
1763 struct ll_inode_info *lli = ll_i2info(inode);
1766 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n",
1767 inode->i_ino, inode->i_generation, inode);
1771 LASSERT(!lli->lli_smd);
1773 /* Core attributes from the MDS first. This is a new inode, and
1774 * the VFS doesn't zero times in the core inode so we have to do
1775 * it ourselves. They will be overwritten by either MDS or OST
1776 * attributes - we just need to make sure they aren't newer. */
1777 LTIME_S(inode->i_mtime) = 0;
1778 LTIME_S(inode->i_atime) = 0;
1779 LTIME_S(inode->i_ctime) = 0;
1781 ll_update_inode(inode, md);
1783 /* OIDEBUG(inode); */
1785 if (S_ISREG(inode->i_mode)) {
1786 struct ll_sb_info *sbi = ll_i2sbi(inode);
1787 inode->i_op = &ll_file_inode_operations;
1788 inode->i_fop = sbi->ll_fop;
1789 inode->i_mapping->a_ops = &ll_aops;
1791 } else if (S_ISDIR(inode->i_mode)) {
1792 inode->i_op = &ll_dir_inode_operations;
1793 inode->i_fop = &ll_dir_operations;
1794 inode->i_mapping->a_ops = &ll_dir_aops;
1796 } else if (S_ISLNK(inode->i_mode)) {
1797 inode->i_op = &ll_fast_symlink_inode_operations;
1800 inode->i_op = &ll_special_inode_operations;
1802 init_special_inode(inode, inode->i_mode,
1803 kdev_t_to_nr(inode->i_rdev));
1805 /* initializing backing dev info. */
1806 inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
1812 void ll_delete_inode(struct inode *inode)
1814 struct ll_sb_info *sbi = ll_i2sbi(inode);
1818 rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
1820 CERROR("fid_delete() failed, rc %d\n", rc);
1822 truncate_inode_pages(&inode->i_data, 0);
1828 int ll_iocontrol(struct inode *inode, struct file *file,
1829 unsigned int cmd, unsigned long arg)
1831 struct ll_sb_info *sbi = ll_i2sbi(inode);
1832 struct ptlrpc_request *req = NULL;
1837 case EXT3_IOC_GETFLAGS: {
1838 struct mdt_body *body;
1839 struct obd_capa *oc;
1841 oc = ll_mdscapa_get(inode);
1842 rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
1843 OBD_MD_FLFLAGS, 0, &req);
1846 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1850 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1852 flags = body->flags;
1854 ptlrpc_req_finished(req);
1856 RETURN(put_user(flags, (int *)arg));
1858 case EXT3_IOC_SETFLAGS: {
1859 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1860 struct obd_info oinfo = { { { 0 } } };
1861 struct md_op_data *op_data;
1863 if (get_user(flags, (int *)arg))
1867 OBDO_ALLOC(oinfo.oi_oa);
1871 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
1872 LUSTRE_OPC_ANY, NULL);
1873 if (IS_ERR(op_data))
1874 RETURN(PTR_ERR(op_data));
1876 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
1877 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
1878 rc = md_setattr(sbi->ll_md_exp, op_data,
1879 NULL, 0, NULL, 0, &req, NULL);
1880 ll_finish_md_op_data(op_data);
1881 ptlrpc_req_finished(req);
1882 if (rc || lsm == NULL) {
1883 OBDO_FREE(oinfo.oi_oa);
1887 oinfo.oi_oa->o_id = lsm->lsm_object_id;
1888 oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
1889 oinfo.oi_oa->o_flags = flags;
1890 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
1892 oinfo.oi_capa = ll_mdscapa_get(inode);
1894 obdo_from_inode(oinfo.oi_oa, inode,
1895 OBD_MD_FLFID | OBD_MD_FLGENER);
1896 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1897 capa_put(oinfo.oi_capa);
1898 OBDO_FREE(oinfo.oi_oa);
1900 if (rc != -EPERM && rc != -EACCES)
1901 CERROR("md_setattr_async fails: rc = %d\n", rc);
1905 inode->i_flags = ll_ext_to_inode_flags(flags |
1906 MDS_BFLAG_EXT_FLAGS);
1916 int ll_flush_ctx(struct inode *inode)
1918 struct ll_sb_info *sbi = ll_i2sbi(inode);
1920 CDEBUG(D_SEC, "flush context for user %d\n", current->uid);
1922 obd_set_info_async(sbi->ll_md_exp,
1923 sizeof(KEY_FLUSH_CTX) - 1, KEY_FLUSH_CTX,
1925 obd_set_info_async(sbi->ll_dt_exp,
1926 sizeof(KEY_FLUSH_CTX) - 1, KEY_FLUSH_CTX,
1931 /* umount -f client means force down, don't save state */
1932 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1933 void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
1935 struct super_block *sb = vfsmnt->mnt_sb;
1937 void ll_umount_begin(struct super_block *sb)
1940 struct lustre_sb_info *lsi = s2lsi(sb);
1941 struct ll_sb_info *sbi = ll_s2sbi(sb);
1942 struct obd_device *obd;
1943 struct obd_ioctl_data ioc_data = { 0 };
1946 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1947 if (!(flags & MNT_FORCE)) {
1953 /* Tell the MGC we got umount -f */
1954 lsi->lsi_flags |= LSI_UMOUNT_FORCE;
1956 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
1957 sb->s_count, atomic_read(&sb->s_active));
1959 obd = class_exp2obd(sbi->ll_md_exp);
1961 CERROR("Invalid MDC connection handle "LPX64"\n",
1962 sbi->ll_md_exp->exp_handle.h_cookie);
1967 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp, sizeof ioc_data,
1970 obd = class_exp2obd(sbi->ll_dt_exp);
1972 CERROR("Invalid LOV connection handle "LPX64"\n",
1973 sbi->ll_dt_exp->exp_handle.h_cookie);
1979 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp, sizeof ioc_data,
1982 /* Really, we'd like to wait until there are no requests outstanding,
1983 * and then continue. For now, we just invalidate the requests,
1984 * schedule, and hope.
1991 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
1993 struct ll_sb_info *sbi = ll_s2sbi(sb);
1997 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
1998 read_only = *flags & MS_RDONLY;
1999 err = obd_set_info_async(sbi->ll_md_exp,
2000 sizeof(KEY_READ_ONLY) - 1,
2001 KEY_READ_ONLY, sizeof(read_only),
2004 CERROR("Failed to change the read-only flag during "
2005 "remount: %d\n", err);
2010 sb->s_flags |= MS_RDONLY;
2012 sb->s_flags &= ~MS_RDONLY;
2017 int ll_prep_inode(struct inode **inode,
2018 struct ptlrpc_request *req,
2019 struct super_block *sb)
2021 struct ll_sb_info *sbi = NULL;
2022 struct lustre_md md;
2026 LASSERT(*inode || sb);
2027 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2028 prune_deathrow(sbi, 1);
2029 memset(&md, 0, sizeof(struct lustre_md));
2031 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2032 sbi->ll_md_exp, &md);
2037 ll_update_inode(*inode, &md);
2039 LASSERT(sb != NULL);
2042 * At this point server returns to client's same fid as client
2043 * generated for creating. So using ->fid1 is okay here.
2045 LASSERT(fid_is_sane(&md.body->fid1));
2047 *inode = ll_iget(sb, ll_fid_build_ino(sbi, &md.body->fid1), &md);
2048 if (*inode == NULL || is_bad_inode(*inode)) {
2050 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2051 #ifdef CONFIG_FS_POSIX_ACL
2053 posix_acl_release(md.posix_acl);
2054 md.posix_acl = NULL;
2058 CERROR("new_inode -fatal: rc %d\n", rc);
2063 rc = obd_checkmd(sbi->ll_dt_exp, sbi->ll_md_exp,
2064 ll_i2info(*inode)->lli_smd);
2066 md_free_lustre_md(sbi->ll_md_exp, &md);
2070 char *llap_origins[] = {
2071 [LLAP_ORIGIN_UNKNOWN] = "--",
2072 [LLAP_ORIGIN_READPAGE] = "rp",
2073 [LLAP_ORIGIN_READAHEAD] = "ra",
2074 [LLAP_ORIGIN_COMMIT_WRITE] = "cw",
2075 [LLAP_ORIGIN_WRITEPAGE] = "wp",
2078 struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi,
2079 struct list_head *list)
2081 struct ll_async_page *llap;
2082 struct list_head *pos;
2084 list_for_each(pos, list) {
2085 if (pos == &sbi->ll_pglist)
2087 llap = list_entry(pos, struct ll_async_page, llap_pglist_item);
2088 if (llap->llap_page == NULL)
2096 int ll_obd_statfs(struct inode *inode, void *arg)
2098 struct ll_sb_info *sbi = NULL;
2099 struct obd_export *exp;
2101 struct obd_ioctl_data *data = NULL;
2105 if (!inode || !(sbi = ll_i2sbi(inode)))
2106 GOTO(out_statfs, rc = -EINVAL);
2108 rc = obd_ioctl_getdata(&buf, &len, arg);
2110 GOTO(out_statfs, rc);
2113 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2114 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2115 GOTO(out_statfs, rc = -EINVAL);
2117 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2118 if (type == LL_STATFS_MDC)
2119 exp = sbi->ll_md_exp;
2120 else if (type == LL_STATFS_LOV)
2121 exp = sbi->ll_dt_exp;
2123 GOTO(out_statfs, rc = -ENODEV);
2125 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2127 GOTO(out_statfs, rc);
2130 obd_ioctl_freedata(buf, len);
2134 int ll_process_config(struct lustre_cfg *lcfg)
2138 struct lprocfs_static_vars lvars;
2142 lprocfs_llite_init_vars(&lvars);
2144 /* The instance name contains the sb: lustre-client-aacfe000 */
2145 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2146 if (!ptr || !*(++ptr))
2148 if (sscanf(ptr, "%lx", &x) != 1)
2151 /* This better be a real Lustre superblock! */
2152 LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2154 /* Note we have not called client_common_fill_super yet, so
2155 proc fns must be able to handle that! */
2156 rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
2161 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2162 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2163 struct inode *i1, struct inode *i2,
2164 const char *name, int namelen,
2165 int mode, __u32 opc, void *data)
2167 LASSERT(i1 != NULL);
2169 if (namelen > ll_i2sbi(i1)->ll_namelen)
2170 return ERR_PTR(-ENAMETOOLONG);
2172 if (op_data == NULL)
2173 OBD_ALLOC_PTR(op_data);
2175 if (op_data == NULL)
2176 return ERR_PTR(-ENOMEM);
2178 ll_i2gids(op_data->op_suppgids, i1, i2);
2179 op_data->op_fid1 = *ll_inode2fid(i1);
2180 op_data->op_capa1 = ll_mdscapa_get(i1);
2183 op_data->op_fid2 = *ll_inode2fid(i2);
2184 op_data->op_capa2 = ll_mdscapa_get(i2);
2186 fid_zero(&op_data->op_fid2);
2189 op_data->op_name = name;
2190 op_data->op_namelen = namelen;
2191 op_data->op_mode = mode;
2192 op_data->op_mod_time = CURRENT_SECONDS;
2193 op_data->op_fsuid = current->fsuid;
2194 op_data->op_fsgid = current->fsgid;
2195 op_data->op_cap = current->cap_effective;
2196 op_data->op_bias = MDS_CHECK_SPLIT;
2197 op_data->op_opc = opc;
2198 op_data->op_mds = 0;
2199 op_data->op_data = data;
2204 void ll_finish_md_op_data(struct md_op_data *op_data)
2206 capa_put(op_data->op_capa1);
2207 capa_put(op_data->op_capa2);
2208 OBD_FREE_PTR(op_data);