1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/llite/llite_lib.c
38 * Lustre Light Super operations
41 #define DEBUG_SUBSYSTEM S_LLITE
43 #include <linux/module.h>
44 #include <linux/types.h>
45 #include <linux/random.h>
46 #include <linux/version.h>
49 #include <lustre_lite.h>
50 #include <lustre_ha.h>
51 #include <lustre_dlm.h>
52 #include <lprocfs_status.h>
53 #include <lustre_disk.h>
54 #include <lustre_param.h>
55 #include <lustre_log.h>
56 #include <obd_cksum.h>
57 #include <lustre_cache.h>
58 #include "llite_internal.h"
60 cfs_mem_cache_t *ll_file_data_slab;
62 LIST_HEAD(ll_super_blocks);
63 spinlock_t ll_sb_lock = SPIN_LOCK_UNLOCKED;
65 extern struct address_space_operations ll_aops;
66 extern struct address_space_operations ll_dir_aops;
69 #define log2(n) ffz(~(n))
72 static inline void ll_pglist_fini(struct ll_sb_info *sbi)
77 if (sbi->ll_pglist == NULL)
80 for_each_possible_cpu(i) {
81 page = sbi->ll_pglist[i]->llpd_page;
83 sbi->ll_pglist[i] = NULL;
88 OBD_FREE(sbi->ll_pglist, sizeof(void *)*num_possible_cpus());
89 sbi->ll_pglist = NULL;
92 static inline int ll_pglist_init(struct ll_sb_info *sbi)
94 struct ll_pglist_data *pd;
99 OBD_ALLOC(sbi->ll_pglist, sizeof(void *) * num_possible_cpus());
100 if (sbi->ll_pglist == NULL)
103 budget = sbi->ll_async_page_max / num_online_cpus();
104 for_each_possible_cpu(i) {
105 struct page *page = alloc_pages_node(cpu_to_node(i),
112 if (color + L1_CACHE_ALIGN(sizeof(*pd)) > PAGE_SIZE)
115 pd = (struct ll_pglist_data *)(page_address(page) + color);
116 memset(pd, 0, sizeof(*pd));
117 spin_lock_init(&pd->llpd_lock);
118 INIT_LIST_HEAD(&pd->llpd_list);
120 pd->llpd_budget = budget;
122 pd->llpd_page = page;
123 atomic_set(&pd->llpd_sample_count, 0);
124 sbi->ll_pglist[i] = pd;
125 color += L1_CACHE_ALIGN(sizeof(*pd));
131 static struct ll_sb_info *ll_init_sbi(void)
133 struct ll_sb_info *sbi = NULL;
140 OBD_ALLOC(sbi, sizeof(*sbi));
144 OBD_ALLOC(sbi->ll_async_page_sample, sizeof(long)*num_possible_cpus());
145 if (sbi->ll_async_page_sample == NULL)
148 spin_lock_init(&sbi->ll_lock);
149 spin_lock_init(&sbi->ll_lco.lco_lock);
150 spin_lock_init(&sbi->ll_pp_extent_lock);
151 spin_lock_init(&sbi->ll_process_lock);
152 sbi->ll_rw_stats_on = 0;
155 pages = si.totalram - si.totalhigh;
156 if (pages >> (20 - CFS_PAGE_SHIFT) < 512) {
157 #ifdef HAVE_BGL_SUPPORT
158 sbi->ll_async_page_max = pages / 4;
160 sbi->ll_async_page_max = pages / 2;
163 sbi->ll_async_page_max = (pages / 4) * 3;
165 lcounter_init(&sbi->ll_async_page_count);
166 spin_lock_init(&sbi->ll_async_page_reblnc_lock);
167 sbi->ll_async_page_sample_max = 64 * num_online_cpus();
168 sbi->ll_async_page_reblnc_count = 0;
169 sbi->ll_async_page_clock_hand = 0;
170 if (ll_pglist_init(sbi))
173 sbi->ll_ra_info.ra_max_pages = min(pages / 32,
174 SBI_DEFAULT_READAHEAD_MAX);
175 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
176 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
177 sbi->ll_contention_time = SBI_DEFAULT_CONTENTION_SECONDS;
178 sbi->ll_lockless_truncate_enable = SBI_DEFAULT_LOCKLESS_TRUNCATE_ENABLE;
179 INIT_LIST_HEAD(&sbi->ll_conn_chain);
180 INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
182 ll_generate_random_uuid(uuid);
183 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
184 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
186 spin_lock(&ll_sb_lock);
187 list_add_tail(&sbi->ll_list, &ll_super_blocks);
188 spin_unlock(&ll_sb_lock);
190 #ifdef ENABLE_LLITE_CHECKSUM
191 sbi->ll_flags |= LL_SBI_CHECKSUM;
194 #ifdef HAVE_LRU_RESIZE_SUPPORT
195 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
198 #ifdef HAVE_EXPORT___IGET
199 INIT_LIST_HEAD(&sbi->ll_deathrow);
200 spin_lock_init(&sbi->ll_deathrow_lock);
202 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
203 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_r_hist.oh_lock);
204 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_w_hist.oh_lock);
207 /* metadata statahead is enabled by default */
208 sbi->ll_sa_max = LL_SA_RPC_DEF;
213 if (sbi->ll_async_page_sample)
214 OBD_FREE(sbi->ll_async_page_sample,
215 sizeof(long) * num_possible_cpus());
217 OBD_FREE(sbi, sizeof(*sbi));
221 void ll_free_sbi(struct super_block *sb)
223 struct ll_sb_info *sbi = ll_s2sbi(sb);
228 spin_lock(&ll_sb_lock);
229 list_del(&sbi->ll_list);
230 spin_unlock(&ll_sb_lock);
231 lcounter_destroy(&sbi->ll_async_page_count);
232 OBD_FREE(sbi->ll_async_page_sample,
233 sizeof(long) * num_possible_cpus());
234 OBD_FREE(sbi, sizeof(*sbi));
239 static struct dentry_operations ll_d_root_ops = {
240 #ifdef DCACHE_LUSTRE_INVALID
241 .d_compare = ll_dcompare,
245 /* Initialize the default and maximum LOV EA and cookie sizes. This allows
246 * us to make MDS RPCs with large enough reply buffers to hold the
247 * maximum-sized (= maximum striped) EA and cookie without having to
248 * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
249 static int ll_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
251 struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC_V3 };
252 __u32 valsize = sizeof(struct lov_desc);
253 int rc, easize, def_easize, cookiesize;
254 struct lov_desc desc;
258 rc = obd_get_info(dt_exp, sizeof(KEY_LOVDESC), KEY_LOVDESC,
259 &valsize, &desc, NULL);
263 stripes = min(desc.ld_tgt_count, (__u32)LOV_MAX_STRIPE_COUNT);
264 lsm.lsm_stripe_count = stripes;
265 easize = obd_size_diskmd(dt_exp, &lsm);
267 lsm.lsm_stripe_count = desc.ld_default_stripe_count;
268 def_easize = obd_size_diskmd(dt_exp, &lsm);
270 cookiesize = stripes * sizeof(struct llog_cookie);
272 CDEBUG(D_HA, "updating max_mdsize/max_cookiesize: %d/%d\n",
275 rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize);
279 static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
281 struct inode *root = 0;
282 struct ll_sb_info *sbi = ll_s2sbi(sb);
283 struct obd_device *obd;
284 struct obd_capa *oc = NULL;
285 struct obd_statfs osfs;
286 struct ptlrpc_request *request = NULL;
287 struct lustre_handle dt_conn = {0, };
288 struct lustre_handle md_conn = {0, };
289 struct obd_connect_data *data = NULL;
290 struct obd_uuid *uuid;
291 struct lustre_md lmd;
293 int size, err, checksum;
296 obd = class_name2obd(md);
298 CERROR("MD %s: not setup or attached\n", md);
306 if (proc_lustre_fs_root) {
307 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
310 CERROR("could not register mount in /proc/fs/lustre\n");
313 /* indicate the features supported by this client */
314 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
315 OBD_CONNECT_JOIN | OBD_CONNECT_ATTRFID |
316 OBD_CONNECT_VERSION | OBD_CONNECT_MDS_CAPA |
317 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_CANCELSET|
318 OBD_CONNECT_FID | OBD_CONNECT_AT |
321 #ifdef HAVE_LRU_RESIZE_SUPPORT
322 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
323 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
325 #ifdef CONFIG_FS_POSIX_ACL
326 data->ocd_connect_flags |= OBD_CONNECT_ACL;
328 data->ocd_ibits_known = MDS_INODELOCK_FULL;
329 data->ocd_version = LUSTRE_VERSION_CODE;
331 if (sb->s_flags & MS_RDONLY)
332 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
333 if (sbi->ll_flags & LL_SBI_USER_XATTR)
334 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
336 #ifdef HAVE_MS_FLOCK_LOCK
337 /* force vfs to use lustre handler for flock() calls - bug 10743 */
338 sb->s_flags |= MS_FLOCK_LOCK;
341 if (sbi->ll_flags & LL_SBI_FLOCK)
342 sbi->ll_fop = &ll_file_operations_flock;
343 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
344 sbi->ll_fop = &ll_file_operations;
346 sbi->ll_fop = &ll_file_operations_noflock;
349 data->ocd_connect_flags |= OBD_CONNECT_REAL;
350 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
351 data->ocd_connect_flags &= ~OBD_CONNECT_LCL_CLIENT;
352 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT;
354 data->ocd_connect_flags &= ~OBD_CONNECT_RMT_CLIENT;
355 data->ocd_connect_flags |= OBD_CONNECT_LCL_CLIENT;
358 err = obd_connect(NULL, &md_conn, obd, &sbi->ll_sb_uuid, data, NULL);
360 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
361 "recovery, of which this client is not a "
362 "part. Please wait for recovery to complete,"
363 " abort, or time out.\n", md);
366 CERROR("cannot connect to %s: rc = %d\n", md, err);
369 sbi->ll_md_exp = class_conn2export(&md_conn);
371 err = obd_fid_init(sbi->ll_md_exp);
373 CERROR("Can't init metadata layer FID infrastructure, "
378 err = obd_statfs(obd, &osfs, cfs_time_current_64() - HZ, 0);
380 GOTO(out_md_fid, err);
382 size = sizeof(*data);
383 err = obd_get_info(sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
384 KEY_CONN_DATA, &size, data, NULL);
386 CERROR("Get connect data failed: %d \n", err);
390 LASSERT(osfs.os_bsize);
391 sb->s_blocksize = osfs.os_bsize;
392 sb->s_blocksize_bits = log2(osfs.os_bsize);
393 sb->s_magic = LL_SUPER_MAGIC;
395 /* for bug 11559. in $LINUX/fs/read_write.c, function do_sendfile():
396 * retval = in_file->f_op->sendfile(...);
398 * retval = -EOVERFLOW;
400 * it will check if *ppos is greater than max. However, max equals to
401 * s_maxbytes, which is a negative integer in a x86_64 box since loff_t
402 * has been defined as a signed long long ineger in linux kernel. */
403 #if BITS_PER_LONG == 64
404 sb->s_maxbytes = PAGE_CACHE_MAXBYTES >> 1;
406 sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
408 sbi->ll_namelen = osfs.os_namelen;
409 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
411 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
412 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
413 LCONSOLE_INFO("Disabling user_xattr feature because "
414 "it is not supported on the server\n");
415 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
418 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
420 sb->s_flags |= MS_POSIXACL;
422 sbi->ll_flags |= LL_SBI_ACL;
424 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
426 sb->s_flags &= ~MS_POSIXACL;
428 sbi->ll_flags &= ~LL_SBI_ACL;
431 if (data->ocd_connect_flags & OBD_CONNECT_JOIN)
432 sbi->ll_flags |= LL_SBI_JOIN;
434 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
435 if (!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT)) {
436 /* sometimes local client claims to be remote, but mdt
437 * will disagree when client gss not applied. */
438 LCONSOLE_INFO("client claims to be remote, but server "
439 "rejected, forced to be local.\n");
440 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
443 if (!(data->ocd_connect_flags & OBD_CONNECT_LCL_CLIENT)) {
444 /* with gss applied, remote client can not claim to be
445 * local, so mdt maybe force client to be remote. */
446 LCONSOLE_INFO("client claims to be local, but server "
447 "rejected, forced to be remote.\n");
448 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
452 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
453 LCONSOLE_INFO("client enabled MDS capability!\n");
454 sbi->ll_flags |= LL_SBI_MDS_CAPA;
457 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
458 LCONSOLE_INFO("client enabled OSS capability!\n");
459 sbi->ll_flags |= LL_SBI_OSS_CAPA;
462 obd = class_name2obd(dt);
464 CERROR("DT %s: not setup or attached\n", dt);
465 GOTO(out_md_fid, err = -ENODEV);
468 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
469 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
470 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
471 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
473 if (sbi->ll_flags & LL_SBI_OSS_CAPA)
474 data->ocd_connect_flags |= OBD_CONNECT_OSS_CAPA;
476 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
477 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
478 * disabled by default, because it can still be enabled on the
479 * fly via /proc. As a consequence, we still need to come to an
480 * agreement on the supported algorithms at connect time */
481 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
483 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
484 data->ocd_cksum_types = OBD_CKSUM_ADLER;
486 /* send the list of supported checksum types */
487 data->ocd_cksum_types = OBD_CKSUM_ALL;
490 #ifdef HAVE_LRU_RESIZE_SUPPORT
491 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
493 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
494 "ocd_grant: %d\n", data->ocd_connect_flags,
495 data->ocd_version, data->ocd_grant);
497 obd->obd_upcall.onu_owner = &sbi->ll_lco;
498 obd->obd_upcall.onu_upcall = ll_ocd_update;
499 data->ocd_brw_size = PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT;
501 err = obd_connect(NULL, &dt_conn, obd, &sbi->ll_sb_uuid, data, NULL);
503 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
504 "recovery, of which this client is not a "
505 "part. Please wait for recovery to "
506 "complete, abort, or time out.\n", dt);
507 GOTO(out_md_fid, err);
509 CERROR("Cannot connect to %s: rc = %d\n", dt, err);
510 GOTO(out_md_fid, err);
513 sbi->ll_dt_exp = class_conn2export(&dt_conn);
515 err = obd_fid_init(sbi->ll_dt_exp);
517 CERROR("Can't init data layer FID infrastructure, "
522 spin_lock(&sbi->ll_lco.lco_lock);
523 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
524 spin_unlock(&sbi->ll_lco.lco_lock);
526 err = obd_register_page_removal_cb(sbi->ll_dt_exp,
530 CERROR("cannot register page removal callback: rc = %d\n",err);
533 err = obd_register_lock_cancel_cb(sbi->ll_dt_exp,
534 ll_extent_lock_cancel_cb);
536 CERROR("cannot register lock cancel callback: rc = %d\n", err);
537 GOTO(out_page_rm_cb, err);
540 err = ll_init_ea_size(sbi->ll_md_exp, sbi->ll_dt_exp);;
542 CERROR("cannot set max EA and cookie sizes: rc = %d\n", err);
543 GOTO(out_lock_cn_cb, err);
546 err = obd_prep_async_page(sbi->ll_dt_exp, NULL, NULL, NULL,
547 0, NULL, NULL, NULL, 0, NULL);
549 LCONSOLE_ERROR_MSG(0x151, "There are no OST's in this "
550 "filesystem. There must be at least one "
551 "active OST for a client to start.\n");
552 GOTO(out_lock_cn_cb, err);
555 if (!ll_async_page_slab) {
556 ll_async_page_slab_size =
557 size_round(sizeof(struct ll_async_page)) + err;
558 ll_async_page_slab = cfs_mem_cache_create("ll_async_page",
559 ll_async_page_slab_size,
561 if (!ll_async_page_slab)
562 GOTO(out_lock_cn_cb, err = -ENOMEM);
565 fid_zero(&sbi->ll_root_fid);
566 err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
568 CERROR("cannot mds_connect: rc = %d\n", err);
569 GOTO(out_lock_cn_cb, err);
571 if (!fid_is_sane(&sbi->ll_root_fid)) {
572 CERROR("Invalid root fid during mount\n");
573 GOTO(out_lock_cn_cb, err = -EINVAL);
575 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
577 sb->s_op = &lustre_super_operations;
578 sb->s_export_op = &lustre_export_operations;
581 * XXX: move this to after cbd setup? */
582 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
583 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
584 valid |= OBD_MD_FLRMTPERM;
585 else if (sbi->ll_flags & LL_SBI_ACL)
586 valid |= OBD_MD_FLACL;
588 err = md_getattr(sbi->ll_md_exp, &sbi->ll_root_fid, oc, valid, 0,
593 CERROR("md_getattr failed for root: rc = %d\n", err);
594 GOTO(out_lock_cn_cb, err);
596 memset(&lmd, 0, sizeof(lmd));
597 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
598 sbi->ll_md_exp, &lmd);
600 CERROR("failed to understand root inode md: rc = %d\n", err);
601 ptlrpc_req_finished (request);
602 GOTO(out_lock_cn_cb, err);
605 LASSERT(fid_is_sane(&sbi->ll_root_fid));
606 root = ll_iget(sb, ll_fid_build_ino(sbi, &sbi->ll_root_fid), &lmd);
607 md_free_lustre_md(sbi->ll_md_exp, &lmd);
608 ptlrpc_req_finished(request);
610 if (root == NULL || is_bad_inode(root)) {
612 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
613 #ifdef CONFIG_FS_POSIX_ACL
615 posix_acl_release(lmd.posix_acl);
616 lmd.posix_acl = NULL;
619 CERROR("lustre_lite: bad iget4 for root\n");
620 GOTO(out_root, err = -EBADF);
623 err = ll_close_thread_start(&sbi->ll_lcq);
625 CERROR("cannot start close thread: rc %d\n", err);
629 #ifdef CONFIG_FS_POSIX_ACL
630 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
631 rct_init(&sbi->ll_rct);
632 et_init(&sbi->ll_et);
636 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
637 err = obd_set_info_async(sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
638 KEY_CHECKSUM, sizeof(checksum), &checksum,
641 sb->s_root = d_alloc_root(root);
643 OBD_FREE(data, sizeof(*data));
645 sb->s_root->d_op = &ll_d_root_ops;
647 sbi->ll_sdev_orig = sb->s_dev;
649 /* We set sb->s_dev equal on all lustre clients in order to support
650 * NFS export clustering. NFSD requires that the FSID be the same
652 /* s_dev is also used in lt_compare() to compare two fs, but that is
653 * only a node-local comparison. */
654 uuid = obd_get_uuid(sbi->ll_md_exp);
656 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
663 obd_unregister_lock_cancel_cb(sbi->ll_dt_exp,
664 ll_extent_lock_cancel_cb);
666 obd_unregister_page_removal_cb(sbi->ll_dt_exp,
668 obd_fid_fini(sbi->ll_dt_exp);
670 obd_disconnect(sbi->ll_dt_exp);
671 sbi->ll_dt_exp = NULL;
673 obd_fid_fini(sbi->ll_md_exp);
675 obd_disconnect(sbi->ll_md_exp);
676 sbi->ll_md_exp = NULL;
680 lprocfs_unregister_mountpoint(sbi);
684 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
688 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
690 rc = obd_get_info(sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
691 KEY_MAX_EASIZE, &size, lmmsize, NULL);
693 CERROR("Get max mdsize error rc %d \n", rc);
698 void ll_dump_inode(struct inode *inode)
700 struct list_head *tmp;
701 int dentry_count = 0;
703 LASSERT(inode != NULL);
705 list_for_each(tmp, &inode->i_dentry)
708 CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
709 inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
710 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
713 void lustre_dump_dentry(struct dentry *dentry, int recur)
715 struct list_head *tmp;
718 LASSERT(dentry != NULL);
720 list_for_each(tmp, &dentry->d_subdirs)
723 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
724 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
725 dentry->d_name.len, dentry->d_name.name,
726 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
727 dentry->d_parent, dentry->d_inode, atomic_read(&dentry->d_count),
728 dentry->d_flags, dentry->d_fsdata, subdirs);
729 if (dentry->d_inode != NULL)
730 ll_dump_inode(dentry->d_inode);
735 list_for_each(tmp, &dentry->d_subdirs) {
736 struct dentry *d = list_entry(tmp, struct dentry, d_child);
737 lustre_dump_dentry(d, recur - 1);
741 #ifdef HAVE_EXPORT___IGET
742 static void prune_dir_dentries(struct inode *inode)
744 struct dentry *dentry, *prev = NULL;
746 /* due to lustre specific logic, a directory
747 * can have few dentries - a bug from VFS POV */
749 spin_lock(&dcache_lock);
750 if (!list_empty(&inode->i_dentry)) {
751 dentry = list_entry(inode->i_dentry.prev,
752 struct dentry, d_alias);
753 /* in order to prevent infinite loops we
754 * break if previous dentry is busy */
755 if (dentry != prev) {
758 spin_unlock(&dcache_lock);
760 /* try to kill all child dentries */
762 shrink_dcache_parent(dentry);
763 unlock_dentry(dentry);
766 /* now try to get rid of current dentry */
767 d_prune_aliases(inode);
771 spin_unlock(&dcache_lock);
774 static void prune_deathrow_one(struct ll_inode_info *lli)
776 struct inode *inode = ll_info2i(lli);
778 /* first, try to drop any dentries - they hold a ref on the inode */
779 if (S_ISDIR(inode->i_mode))
780 prune_dir_dentries(inode);
782 d_prune_aliases(inode);
785 /* if somebody still uses it, leave it */
786 LASSERT(atomic_read(&inode->i_count) > 0);
787 if (atomic_read(&inode->i_count) > 1)
790 CDEBUG(D_INODE, "inode %lu/%u(%d) looks a good candidate for prune\n",
791 inode->i_ino,inode->i_generation, atomic_read(&inode->i_count));
793 /* seems nobody uses it anymore */
801 static void prune_deathrow(struct ll_sb_info *sbi, int try)
803 struct ll_inode_info *lli;
807 if (need_resched() && try)
811 if (!spin_trylock(&sbi->ll_deathrow_lock))
814 spin_lock(&sbi->ll_deathrow_lock);
819 if (!list_empty(&sbi->ll_deathrow)) {
820 lli = list_entry(sbi->ll_deathrow.next,
821 struct ll_inode_info,
823 list_del_init(&lli->lli_dead_list);
824 if (!list_empty(&sbi->ll_deathrow))
827 spin_unlock(&sbi->ll_deathrow_lock);
830 prune_deathrow_one(lli);
832 } while (empty == 0);
834 #else /* !HAVE_EXPORT___IGET */
835 #define prune_deathrow(sbi, try) do {} while (0)
836 #endif /* HAVE_EXPORT___IGET */
838 void client_common_put_super(struct super_block *sb)
840 struct ll_sb_info *sbi = ll_s2sbi(sb);
843 #ifdef CONFIG_FS_POSIX_ACL
844 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
845 et_fini(&sbi->ll_et);
846 rct_fini(&sbi->ll_rct);
850 obd_cancel_unused(sbi->ll_dt_exp, NULL, 0, NULL);
852 ll_close_thread_shutdown(sbi->ll_lcq);
854 /* destroy inodes in deathrow */
855 prune_deathrow(sbi, 0);
857 list_del(&sbi->ll_conn_chain);
859 obd_fid_fini(sbi->ll_dt_exp);
860 obd_disconnect(sbi->ll_dt_exp);
861 sbi->ll_dt_exp = NULL;
863 lprocfs_unregister_mountpoint(sbi);
865 obd_fid_fini(sbi->ll_md_exp);
866 obd_disconnect(sbi->ll_md_exp);
867 sbi->ll_md_exp = NULL;
872 void ll_kill_super(struct super_block *sb)
874 struct ll_sb_info *sbi;
879 if (!(sb->s_flags & MS_ACTIVE))
883 /* we need restore s_dev from changed for clustred NFS before put_super
884 * because new kernels have cached s_dev and change sb->s_dev in
885 * put_super not affected real removing devices */
887 sb->s_dev = sbi->ll_sdev_orig;
891 char *ll_read_opt(const char *opt, char *data)
897 CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
898 if (strncmp(opt, data, strlen(opt)))
900 if ((value = strchr(data, '=')) == NULL)
904 OBD_ALLOC(retval, strlen(value) + 1);
906 CERROR("out of memory!\n");
910 memcpy(retval, value, strlen(value)+1);
911 CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
915 static inline int ll_set_opt(const char *opt, char *data, int fl)
917 if (strncmp(opt, data, strlen(opt)) != 0)
923 /* non-client-specific mount options are parsed in lmd_parse */
924 static int ll_options(char *options, int *flags)
927 char *s1 = options, *s2;
933 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
936 CDEBUG(D_SUPER, "next opt=%s\n", s1);
937 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
942 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
947 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
952 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
957 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
962 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
967 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
969 /* Ignore deprecated mount option. The client will
970 * always try to mount with ACL support, whether this
971 * is used depends on whether server supports it. */
974 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
978 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
984 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
989 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
994 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
999 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
1005 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
1011 s2 = strchr(s1, ',');
1019 void ll_lli_init(struct ll_inode_info *lli)
1021 lli->lli_inode_magic = LLI_INODE_MAGIC;
1022 sema_init(&lli->lli_size_sem, 1);
1023 sema_init(&lli->lli_write_sem, 1);
1025 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1026 spin_lock_init(&lli->lli_lock);
1027 INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
1028 INIT_LIST_HEAD(&lli->lli_close_list);
1029 lli->lli_inode_magic = LLI_INODE_MAGIC;
1030 sema_init(&lli->lli_och_sem, 1);
1031 lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
1032 lli->lli_mds_exec_och = NULL;
1033 lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
1034 lli->lli_open_fd_exec_count = 0;
1035 INIT_LIST_HEAD(&lli->lli_dead_list);
1036 lli->lli_remote_perms = NULL;
1037 lli->lli_rmtperm_utime = 0;
1038 sema_init(&lli->lli_rmtperm_sem, 1);
1039 INIT_LIST_HEAD(&lli->lli_oss_capas);
1042 int ll_fill_super(struct super_block *sb)
1044 struct lustre_profile *lprof;
1045 struct lustre_sb_info *lsi = s2lsi(sb);
1046 struct ll_sb_info *sbi;
1047 char *dt = NULL, *md = NULL;
1048 char *profilenm = get_profile_name(sb);
1049 struct config_llog_instance cfg = {0, };
1050 char ll_instance[sizeof(sb) * 2 + 1];
1054 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
1058 /* client additional sb info */
1059 lsi->lsi_llsbi = sbi = ll_init_sbi();
1065 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
1067 GOTO(out_free, err);
1069 /* Generate a string unique to this super, in case some joker tries
1070 to mount the same fs at two mount points.
1071 Use the address of the super itself.*/
1072 sprintf(ll_instance, "%p", sb);
1073 cfg.cfg_instance = ll_instance;
1074 cfg.cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1076 /* set up client obds */
1077 err = lustre_process_log(sb, profilenm, &cfg);
1079 CERROR("Unable to process log: %d\n", err);
1080 GOTO(out_free, err);
1083 lprof = class_get_profile(profilenm);
1084 if (lprof == NULL) {
1085 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1086 " read from the MGS. Does that filesystem "
1087 "exist?\n", profilenm);
1088 GOTO(out_free, err = -EINVAL);
1090 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1091 lprof->lp_md, lprof->lp_dt);
1093 OBD_ALLOC(dt, strlen(lprof->lp_dt) +
1094 strlen(ll_instance) + 2);
1096 GOTO(out_free, err = -ENOMEM);
1097 sprintf(dt, "%s-%s", lprof->lp_dt, ll_instance);
1099 OBD_ALLOC(md, strlen(lprof->lp_md) +
1100 strlen(ll_instance) + 2);
1102 GOTO(out_free, err = -ENOMEM);
1103 sprintf(md, "%s-%s", lprof->lp_md, ll_instance);
1105 /* connections, registrations, sb setup */
1106 err = client_common_fill_super(sb, md, dt);
1110 OBD_FREE(md, strlen(md) + 1);
1112 OBD_FREE(dt, strlen(dt) + 1);
1116 LCONSOLE_WARN("Client %s has started\n", profilenm);
1119 } /* ll_fill_super */
1122 void ll_put_super(struct super_block *sb)
1124 struct config_llog_instance cfg;
1125 char ll_instance[sizeof(sb) * 2 + 1];
1126 struct obd_device *obd;
1127 struct lustre_sb_info *lsi = s2lsi(sb);
1128 struct ll_sb_info *sbi = ll_s2sbi(sb);
1129 char *profilenm = get_profile_name(sb);
1130 int force = 1, next;
1133 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1135 ll_print_capa_stat(sbi);
1137 sprintf(ll_instance, "%p", sb);
1138 cfg.cfg_instance = ll_instance;
1139 lustre_end_log(sb, NULL, &cfg);
1141 if (sbi->ll_md_exp) {
1142 obd = class_exp2obd(sbi->ll_md_exp);
1144 force = obd->obd_force;
1147 /* We need to set force before the lov_disconnect in
1148 lustre_common_put_super, since l_d cleans up osc's as well. */
1151 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1153 obd->obd_force = force;
1158 /* Only if client_common_fill_super succeeded */
1159 client_common_put_super(sb);
1162 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1163 class_manual_cleanup(obd);
1167 class_del_profile(profilenm);
1170 lsi->lsi_llsbi = NULL;
1172 lustre_common_put_super(sb);
1174 LCONSOLE_WARN("client %s umount complete\n", ll_instance);
1179 } /* client_put_super */
1181 #if defined(HAVE_REGISTER_CACHE) || defined(HAVE_SHRINKER_CACHE)
1183 #if defined(HAVE_CACHE_RETURN_INT)
1188 ll_shrink_cache(int priority, unsigned int gfp_mask)
1190 struct ll_sb_info *sbi;
1193 list_for_each_entry(sbi, &ll_super_blocks, ll_list)
1194 count += llap_shrink_cache(sbi, priority);
1196 #if defined(HAVE_CACHE_RETURN_INT)
1201 struct cache_definition ll_cache_definition = {
1202 .name = "llap_cache",
1203 .shrink = ll_shrink_cache
1205 #endif /* HAVE_REGISTER_CACHE || HAVE_SHRINKER_CACHE */
1207 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
1209 struct inode *inode = NULL;
1210 /* NOTE: we depend on atomic igrab() -bzzz */
1211 lock_res_and_lock(lock);
1212 if (lock->l_ast_data) {
1213 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
1214 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1215 inode = igrab(lock->l_ast_data);
1217 inode = lock->l_ast_data;
1218 ldlm_lock_debug(NULL, inode->i_state & I_FREEING ?
1220 lock, __FILE__, __func__, __LINE__,
1221 "l_ast_data %p is bogus: magic %08x",
1222 lock->l_ast_data, lli->lli_inode_magic);
1226 unlock_res_and_lock(lock);
1230 static int null_if_equal(struct ldlm_lock *lock, void *data)
1232 if (data == lock->l_ast_data) {
1233 lock->l_ast_data = NULL;
1235 if (lock->l_req_mode != lock->l_granted_mode)
1236 LDLM_ERROR(lock,"clearing inode with ungranted lock");
1239 return LDLM_ITER_CONTINUE;
1242 void ll_clear_inode(struct inode *inode)
1244 struct ll_inode_info *lli = ll_i2info(inode);
1245 struct ll_sb_info *sbi = ll_i2sbi(inode);
1248 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1249 inode->i_generation, inode);
1251 if (S_ISDIR(inode->i_mode)) {
1252 /* these should have been cleared in ll_file_release */
1253 LASSERT(lli->lli_sai == NULL);
1254 LASSERT(lli->lli_opendir_key == NULL);
1255 LASSERT(lli->lli_opendir_pid == 0);
1258 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1259 md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
1260 null_if_equal, inode);
1262 LASSERT(!lli->lli_open_fd_write_count);
1263 LASSERT(!lli->lli_open_fd_read_count);
1264 LASSERT(!lli->lli_open_fd_exec_count);
1266 if (lli->lli_mds_write_och)
1267 ll_md_real_close(inode, FMODE_WRITE);
1268 if (lli->lli_mds_exec_och)
1269 ll_md_real_close(inode, FMODE_EXEC);
1270 if (lli->lli_mds_read_och)
1271 ll_md_real_close(inode, FMODE_READ);
1274 obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
1275 null_if_equal, inode);
1277 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1278 lli->lli_smd = NULL;
1281 if (lli->lli_symlink_name) {
1282 OBD_FREE(lli->lli_symlink_name,
1283 strlen(lli->lli_symlink_name) + 1);
1284 lli->lli_symlink_name = NULL;
1287 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1288 LASSERT(lli->lli_posix_acl == NULL);
1289 if (lli->lli_remote_perms) {
1290 free_rmtperm_hash(lli->lli_remote_perms);
1291 lli->lli_remote_perms = NULL;
1294 #ifdef CONFIG_FS_POSIX_ACL
1295 else if (lli->lli_posix_acl) {
1296 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1297 LASSERT(lli->lli_remote_perms == NULL);
1298 posix_acl_release(lli->lli_posix_acl);
1299 lli->lli_posix_acl = NULL;
1302 lli->lli_inode_magic = LLI_INODE_DEAD;
1304 #ifdef HAVE_EXPORT___IGET
1305 spin_lock(&sbi->ll_deathrow_lock);
1306 list_del_init(&lli->lli_dead_list);
1307 spin_unlock(&sbi->ll_deathrow_lock);
1309 ll_clear_inode_capas(inode);
1314 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
1315 struct md_open_data **mod)
1317 struct lustre_md md;
1318 struct ll_sb_info *sbi = ll_i2sbi(inode);
1319 struct ptlrpc_request *request = NULL;
1323 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1324 LUSTRE_OPC_ANY, NULL);
1325 if (IS_ERR(op_data))
1326 RETURN(PTR_ERR(op_data));
1328 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1331 ptlrpc_req_finished(request);
1332 if (rc == -ENOENT) {
1334 /* Unlinked special device node? Or just a race?
1335 * Pretend we done everything. */
1336 if (!S_ISREG(inode->i_mode) &&
1337 !S_ISDIR(inode->i_mode))
1338 rc = inode_setattr(inode, &op_data->op_attr);
1339 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1340 CERROR("md_setattr fails: rc = %d\n", rc);
1345 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1346 sbi->ll_md_exp, &md);
1348 ptlrpc_req_finished(request);
1352 /* We call inode_setattr to adjust timestamps.
1353 * If there is at least some data in file, we cleared ATTR_SIZE
1354 * above to avoid invoking vmtruncate, otherwise it is important
1355 * to call vmtruncate in inode_setattr to update inode->i_size
1357 rc = inode_setattr(inode, &op_data->op_attr);
1359 /* Extract epoch data if obtained. */
1360 op_data->op_handle = md.body->handle;
1361 op_data->op_ioepoch = md.body->ioepoch;
1363 ll_update_inode(inode, &md);
1364 ptlrpc_req_finished(request);
1369 /* Close IO epoch and send Size-on-MDS attribute update. */
1370 static int ll_setattr_done_writing(struct inode *inode,
1371 struct md_op_data *op_data,
1372 struct md_open_data *mod)
1374 struct ll_inode_info *lli = ll_i2info(inode);
1378 LASSERT(op_data != NULL);
1379 if (!S_ISREG(inode->i_mode))
1382 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1383 op_data->op_ioepoch, PFID(&lli->lli_fid));
1385 op_data->op_flags = MF_EPOCH_CLOSE | MF_SOM_CHANGE;
1386 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1387 if (rc == -EAGAIN) {
1388 /* MDS has instructed us to obtain Size-on-MDS attribute
1389 * from OSTs and send setattr to back to MDS. */
1390 rc = ll_sizeonmds_update(inode, mod, &op_data->op_handle,
1391 op_data->op_ioepoch);
1393 CERROR("inode %lu mdc truncate failed: rc = %d\n",
1399 static int ll_setattr_do_truncate(struct inode *inode, loff_t new_size)
1401 struct ll_sb_info *sbi = ll_i2sbi(inode);
1402 struct ll_inode_info *lli = ll_i2info(inode);
1403 struct lov_stripe_md *lsm = lli->lli_smd;
1405 ldlm_policy_data_t policy = { .l_extent = {new_size,
1407 struct lustre_handle lockh = { 0 };
1408 int local_lock = 0; /* 0 - no local lock;
1409 * 1 - lock taken by lock_extent;
1410 * 2 - by obd_match*/
1415 UNLOCK_INODE_MUTEX(inode);
1416 UP_WRITE_I_ALLOC_SEM(inode);
1418 if (sbi->ll_lockless_truncate_enable &&
1419 (sbi->ll_lco.lco_flags & OBD_CONNECT_TRUNCLOCK)) {
1420 ast_flags = LDLM_FL_BLOCK_GRANTED;
1421 rc = obd_match(sbi->ll_dt_exp, lsm, LDLM_EXTENT,
1422 &policy, LCK_PW, &ast_flags, inode, &lockh);
1426 } else if (rc == 0) {
1427 rc = ll_file_punch(inode, new_size, 1);
1430 /* XXX when we fix the AST intents to pass the discard-range
1431 * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
1433 ast_flags = (new_size == 0) ? LDLM_AST_DISCARD_DATA : 0;
1434 rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy,
1436 if (likely(rc == 0))
1440 LOCK_INODE_MUTEX(inode);
1441 DOWN_WRITE_I_ALLOC_SEM(inode);
1443 if (likely(rc == 0)) {
1444 /* Only ll_inode_size_lock is taken at this level.
1445 * lov_stripe_lock() is grabbed by ll_truncate() only over
1446 * call to obd_adjust_kms(). If vmtruncate returns 0, then
1447 * ll_truncate dropped ll_inode_size_lock() */
1448 ll_inode_size_lock(inode, 0);
1450 spin_lock(&lli->lli_lock);
1451 lli->lli_flags |= LLIF_SRVLOCK;
1452 spin_unlock(&lli->lli_lock);
1454 rc = vmtruncate(inode, new_size);
1456 spin_lock(&lli->lli_lock);
1457 lli->lli_flags &= ~LLIF_SRVLOCK;
1458 spin_unlock(&lli->lli_lock);
1461 LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
1462 ll_inode_size_unlock(inode, 0);
1467 if (local_lock == 2)
1468 err = obd_cancel(sbi->ll_dt_exp, lsm, LCK_PW, &lockh);
1470 err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
1471 if (unlikely(err != 0)){
1472 CERROR("extent unlock failed: err=%d,"
1473 " unlock method =%d\n", err, local_lock);
1481 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1482 * object(s) determine the file size and mtime. Otherwise, the MDS will
1483 * keep these values until such a time that objects are allocated for it.
1484 * We do the MDS operations first, as it is checking permissions for us.
1485 * We don't to the MDS RPC if there is nothing that we want to store there,
1486 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1487 * going to do an RPC anyways.
1489 * If we are doing a truncate, we will send the mtime and ctime updates
1490 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1491 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1494 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1496 struct ll_inode_info *lli = ll_i2info(inode);
1497 struct lov_stripe_md *lsm = lli->lli_smd;
1498 struct ll_sb_info *sbi = ll_i2sbi(inode);
1499 struct md_op_data *op_data = NULL;
1500 struct md_open_data *mod = NULL;
1501 int ia_valid = attr->ia_valid;
1502 int rc = 0, rc1 = 0;
1505 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
1507 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETATTR, 1);
1509 if (ia_valid & ATTR_SIZE) {
1510 if (attr->ia_size > ll_file_maxbytes(inode)) {
1511 CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1512 attr->ia_size, ll_file_maxbytes(inode));
1516 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1519 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1520 if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1521 if (current->fsuid != inode->i_uid &&
1522 !cfs_capable(CFS_CAP_FOWNER))
1526 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1527 if (attr->ia_valid & ATTR_CTIME) {
1528 attr->ia_ctime = CURRENT_TIME;
1529 attr->ia_valid |= ATTR_CTIME_SET;
1531 if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1532 attr->ia_atime = CURRENT_TIME;
1533 attr->ia_valid |= ATTR_ATIME_SET;
1535 if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1536 attr->ia_mtime = CURRENT_TIME;
1537 attr->ia_valid |= ATTR_MTIME_SET;
1539 if ((attr->ia_valid & ATTR_CTIME) && !(attr->ia_valid & ATTR_MTIME)) {
1540 /* To avoid stale mtime on mds, obtain it from ost and send
1542 rc = ll_glimpse_size(inode, 0);
1546 attr->ia_valid |= ATTR_MTIME_SET | ATTR_MTIME;
1547 attr->ia_mtime = inode->i_mtime;
1550 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1551 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1552 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1553 cfs_time_current_sec());
1555 /* NB: ATTR_SIZE will only be set after this point if the size
1556 * resides on the MDS, ie, this file has no objects. */
1558 attr->ia_valid &= ~ATTR_SIZE;
1560 /* We always do an MDS RPC, even if we're only changing the size;
1561 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1563 OBD_ALLOC_PTR(op_data);
1564 if (op_data == NULL)
1567 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1569 /* Open epoch for truncate. */
1570 if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
1571 (ia_valid & ATTR_SIZE))
1572 op_data->op_flags = MF_EPOCH_OPEN;
1574 rc = ll_md_setattr(inode, op_data, &mod);
1578 if (op_data->op_ioepoch)
1579 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID" for "
1580 "truncate\n", op_data->op_ioepoch, PFID(&lli->lli_fid));
1582 if (!lsm || !S_ISREG(inode->i_mode)) {
1583 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1587 /* We really need to get our PW lock before we change inode->i_size.
1588 * If we don't we can race with other i_size updaters on our node, like
1589 * ll_file_read. We can also race with i_size propogation to other
1590 * nodes through dirtying and writeback of final cached pages. This
1591 * last one is especially bad for racing o_append users on other
1593 if (ia_valid & ATTR_SIZE) {
1594 rc = ll_setattr_do_truncate(inode, attr->ia_size);
1595 } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
1597 struct obd_info oinfo = { { { 0 } } };
1600 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
1601 inode->i_ino, LTIME_S(attr->ia_mtime));
1605 oa->o_id = lsm->lsm_object_id;
1606 oa->o_gr = lsm->lsm_object_gr;
1607 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1609 flags = OBD_MD_FLTYPE | OBD_MD_FLATIME |
1610 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
1611 OBD_MD_FLFID | OBD_MD_FLGENER |
1614 obdo_from_inode(oa, inode, flags);
1618 oinfo.oi_capa = ll_mdscapa_get(inode);
1620 /* XXX: this looks unnecessary now. */
1621 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1622 capa_put(oinfo.oi_capa);
1624 CERROR("obd_setattr_async fails: rc=%d\n", rc);
1633 if (op_data->op_ioepoch)
1634 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1635 ll_finish_md_op_data(op_data);
1637 return rc ? rc : rc1;
1640 int ll_setattr(struct dentry *de, struct iattr *attr)
1642 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1643 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1644 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1646 if ((de->d_inode->i_mode & S_ISUID) &&
1647 !(attr->ia_mode & S_ISUID) &&
1648 !(attr->ia_valid & ATTR_KILL_SUID))
1649 attr->ia_valid |= ATTR_KILL_SUID;
1651 if (((de->d_inode->i_mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1652 !(attr->ia_mode & S_ISGID) &&
1653 !(attr->ia_valid & ATTR_KILL_SGID))
1654 attr->ia_valid |= ATTR_KILL_SGID;
1656 return ll_setattr_raw(de->d_inode, attr);
1659 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1660 __u64 max_age, __u32 flags)
1662 struct ll_sb_info *sbi = ll_s2sbi(sb);
1663 struct obd_statfs obd_osfs;
1667 rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, flags);
1669 CERROR("md_statfs fails: rc = %d\n", rc);
1673 osfs->os_type = sb->s_magic;
1675 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1676 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1678 rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
1679 &obd_osfs, max_age, flags);
1681 CERROR("obd_statfs fails: rc = %d\n", rc);
1685 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1686 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1689 osfs->os_bsize = obd_osfs.os_bsize;
1690 osfs->os_blocks = obd_osfs.os_blocks;
1691 osfs->os_bfree = obd_osfs.os_bfree;
1692 osfs->os_bavail = obd_osfs.os_bavail;
1694 /* If we don't have as many objects free on the OST as inodes
1695 * on the MDS, we reduce the total number of inodes to
1696 * compensate, so that the "inodes in use" number is correct.
1698 if (obd_osfs.os_ffree < osfs->os_ffree) {
1699 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1701 osfs->os_ffree = obd_osfs.os_ffree;
1706 #ifndef HAVE_STATFS_DENTRY_PARAM
1707 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1710 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1712 struct super_block *sb = de->d_sb;
1714 struct obd_statfs osfs;
1717 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1718 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1720 /* For now we will always get up-to-date statfs values, but in the
1721 * future we may allow some amount of caching on the client (e.g.
1722 * from QOS or lprocfs updates). */
1723 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - 1, 0);
1727 statfs_unpack(sfs, &osfs);
1729 /* We need to downshift for all 32-bit kernels, because we can't
1730 * tell if the kernel is being called via sys_statfs64() or not.
1731 * Stop before overflowing f_bsize - in which case it is better
1732 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1733 if (sizeof(long) < 8) {
1734 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1737 osfs.os_blocks >>= 1;
1738 osfs.os_bfree >>= 1;
1739 osfs.os_bavail >>= 1;
1743 sfs->f_blocks = osfs.os_blocks;
1744 sfs->f_bfree = osfs.os_bfree;
1745 sfs->f_bavail = osfs.os_bavail;
1750 void ll_inode_size_lock(struct inode *inode, int lock_lsm)
1752 struct ll_inode_info *lli;
1753 struct lov_stripe_md *lsm;
1755 lli = ll_i2info(inode);
1756 LASSERT(lli->lli_size_sem_owner != current);
1757 down(&lli->lli_size_sem);
1758 LASSERT(lli->lli_size_sem_owner == NULL);
1759 lli->lli_size_sem_owner = current;
1761 LASSERTF(lsm != NULL || lock_lsm == 0, "lsm %p, lock_lsm %d\n",
1764 lov_stripe_lock(lsm);
1767 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
1769 struct ll_inode_info *lli;
1770 struct lov_stripe_md *lsm;
1772 lli = ll_i2info(inode);
1774 LASSERTF(lsm != NULL || unlock_lsm == 0, "lsm %p, lock_lsm %d\n",
1777 lov_stripe_unlock(lsm);
1778 LASSERT(lli->lli_size_sem_owner == current);
1779 lli->lli_size_sem_owner = NULL;
1780 up(&lli->lli_size_sem);
1783 static void ll_replace_lsm(struct inode *inode, struct lov_stripe_md *lsm)
1785 struct ll_inode_info *lli = ll_i2info(inode);
1787 dump_lsm(D_INODE, lsm);
1788 dump_lsm(D_INODE, lli->lli_smd);
1789 LASSERTF(lsm->lsm_magic == LOV_MAGIC_JOIN,
1790 "lsm must be joined lsm %p\n", lsm);
1791 obd_free_memmd(ll_i2dtexp(inode), &lli->lli_smd);
1792 CDEBUG(D_INODE, "replace lsm %p to lli_smd %p for inode %lu%u(%p)\n",
1793 lsm, lli->lli_smd, inode->i_ino, inode->i_generation, inode);
1795 lli->lli_maxbytes = lsm->lsm_maxbytes;
1796 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1797 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1800 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1802 struct ll_inode_info *lli = ll_i2info(inode);
1803 struct mdt_body *body = md->body;
1804 struct lov_stripe_md *lsm = md->lsm;
1805 struct ll_sb_info *sbi = ll_i2sbi(inode);
1807 LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1809 if (lli->lli_smd == NULL) {
1810 if (lsm->lsm_magic != LOV_MAGIC_V1 &&
1811 lsm->lsm_magic != LOV_MAGIC_V3 &&
1812 lsm->lsm_magic != LOV_MAGIC_JOIN) {
1813 dump_lsm(D_ERROR, lsm);
1816 CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
1817 lsm, inode->i_ino, inode->i_generation, inode);
1818 /* ll_inode_size_lock() requires it is only called
1819 * with lli_smd != NULL or lock_lsm == 0 or we can
1820 * race between lock/unlock. bug 9547 */
1822 lli->lli_maxbytes = lsm->lsm_maxbytes;
1823 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1824 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1826 if (lli->lli_smd->lsm_magic == lsm->lsm_magic &&
1827 lli->lli_smd->lsm_stripe_count ==
1828 lsm->lsm_stripe_count) {
1829 if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
1830 CERROR("lsm mismatch for inode %ld\n",
1832 CERROR("lli_smd:\n");
1833 dump_lsm(D_ERROR, lli->lli_smd);
1835 dump_lsm(D_ERROR, lsm);
1839 ll_replace_lsm(inode, lsm);
1841 if (lli->lli_smd != lsm)
1842 obd_free_memmd(ll_i2dtexp(inode), &lsm);
1845 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1846 if (body->valid & OBD_MD_FLRMTPERM)
1847 ll_update_remote_perm(inode, md->remote_perm);
1849 #ifdef CONFIG_FS_POSIX_ACL
1850 else if (body->valid & OBD_MD_FLACL) {
1851 spin_lock(&lli->lli_lock);
1852 if (lli->lli_posix_acl)
1853 posix_acl_release(lli->lli_posix_acl);
1854 lli->lli_posix_acl = md->posix_acl;
1855 spin_unlock(&lli->lli_lock);
1858 inode->i_ino = ll_fid_build_ino(sbi, &body->fid1);
1860 if (body->valid & OBD_MD_FLATIME &&
1861 body->atime > LTIME_S(inode->i_atime))
1862 LTIME_S(inode->i_atime) = body->atime;
1864 /* mtime is always updated with ctime, but can be set in past.
1865 As write and utime(2) may happen within 1 second, and utime's
1866 mtime has a priority over write's one, so take mtime from mds
1867 for the same ctimes. */
1868 if (body->valid & OBD_MD_FLCTIME &&
1869 body->ctime >= LTIME_S(inode->i_ctime)) {
1870 LTIME_S(inode->i_ctime) = body->ctime;
1871 if (body->valid & OBD_MD_FLMTIME) {
1872 CDEBUG(D_INODE, "setting ino %lu mtime "
1873 "from %lu to "LPU64"\n", inode->i_ino,
1874 LTIME_S(inode->i_mtime), body->mtime);
1875 LTIME_S(inode->i_mtime) = body->mtime;
1878 if (body->valid & OBD_MD_FLMODE)
1879 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
1880 if (body->valid & OBD_MD_FLTYPE)
1881 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
1882 LASSERT(inode->i_mode != 0);
1883 if (S_ISREG(inode->i_mode)) {
1884 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
1886 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1888 #ifdef HAVE_INODE_BLKSIZE
1889 inode->i_blksize = 1<<inode->i_blkbits;
1891 if (body->valid & OBD_MD_FLUID)
1892 inode->i_uid = body->uid;
1893 if (body->valid & OBD_MD_FLGID)
1894 inode->i_gid = body->gid;
1895 if (body->valid & OBD_MD_FLFLAGS)
1896 inode->i_flags = ll_ext_to_inode_flags(body->flags);
1897 if (body->valid & OBD_MD_FLNLINK)
1898 inode->i_nlink = body->nlink;
1899 if (body->valid & OBD_MD_FLRDEV)
1900 inode->i_rdev = old_decode_dev(body->rdev);
1902 if (body->valid & OBD_MD_FLID) {
1903 /* FID shouldn't be changed! */
1904 if (fid_is_sane(&lli->lli_fid)) {
1905 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
1906 "Trying to change FID "DFID
1907 " to the "DFID", inode %lu/%u(%p)\n",
1908 PFID(&lli->lli_fid), PFID(&body->fid1),
1909 inode->i_ino, inode->i_generation, inode);
1911 lli->lli_fid = body->fid1;
1914 LASSERT(fid_seq(&lli->lli_fid) != 0);
1916 if (body->valid & OBD_MD_FLSIZE) {
1917 if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
1918 S_ISREG(inode->i_mode) && lli->lli_smd) {
1919 struct lustre_handle lockh;
1922 /* As it is possible a blocking ast has been processed
1923 * by this time, we need to check there is an UPDATE
1924 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
1926 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
1929 if (lli->lli_flags & (LLIF_DONE_WRITING |
1930 LLIF_EPOCH_PENDING |
1932 CERROR("ino %lu flags %lu still has "
1933 "size authority! do not trust "
1934 "the size got from MDS\n",
1935 inode->i_ino, lli->lli_flags);
1937 /* Use old size assignment to avoid
1938 * deadlock bz14138 & bz14326 */
1939 inode->i_size = body->size;
1940 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
1942 ldlm_lock_decref(&lockh, mode);
1945 /* Use old size assignment to avoid
1946 * deadlock bz14138 & bz14326 */
1947 inode->i_size = body->size;
1950 if (body->valid & OBD_MD_FLBLOCKS)
1951 inode->i_blocks = body->blocks;
1954 if (body->valid & OBD_MD_FLMDSCAPA) {
1955 LASSERT(md->mds_capa);
1956 ll_add_capa(inode, md->mds_capa);
1958 if (body->valid & OBD_MD_FLOSSCAPA) {
1959 LASSERT(md->oss_capa);
1960 ll_add_capa(inode, md->oss_capa);
1964 static struct backing_dev_info ll_backing_dev_info = {
1965 .ra_pages = 0, /* No readahead */
1966 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12))
1967 .capabilities = 0, /* Does contribute to dirty memory */
1969 .memory_backed = 0, /* Does contribute to dirty memory */
1973 void ll_read_inode2(struct inode *inode, void *opaque)
1975 struct lustre_md *md = opaque;
1976 struct ll_inode_info *lli = ll_i2info(inode);
1979 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n",
1980 inode->i_ino, inode->i_generation, inode);
1984 LASSERT(!lli->lli_smd);
1986 /* Core attributes from the MDS first. This is a new inode, and
1987 * the VFS doesn't zero times in the core inode so we have to do
1988 * it ourselves. They will be overwritten by either MDS or OST
1989 * attributes - we just need to make sure they aren't newer. */
1990 LTIME_S(inode->i_mtime) = 0;
1991 LTIME_S(inode->i_atime) = 0;
1992 LTIME_S(inode->i_ctime) = 0;
1994 ll_update_inode(inode, md);
1996 /* OIDEBUG(inode); */
1998 if (S_ISREG(inode->i_mode)) {
1999 struct ll_sb_info *sbi = ll_i2sbi(inode);
2000 inode->i_op = &ll_file_inode_operations;
2001 inode->i_fop = sbi->ll_fop;
2002 inode->i_mapping->a_ops = &ll_aops;
2004 } else if (S_ISDIR(inode->i_mode)) {
2005 inode->i_op = &ll_dir_inode_operations;
2006 inode->i_fop = &ll_dir_operations;
2007 inode->i_mapping->a_ops = &ll_dir_aops;
2009 } else if (S_ISLNK(inode->i_mode)) {
2010 inode->i_op = &ll_fast_symlink_inode_operations;
2013 inode->i_op = &ll_special_inode_operations;
2015 init_special_inode(inode, inode->i_mode,
2016 kdev_t_to_nr(inode->i_rdev));
2018 /* initializing backing dev info. */
2019 inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
2025 void ll_delete_inode(struct inode *inode)
2027 struct ll_sb_info *sbi = ll_i2sbi(inode);
2031 rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
2033 CERROR("fid_delete() failed, rc %d\n", rc);
2035 truncate_inode_pages(&inode->i_data, 0);
2041 int ll_iocontrol(struct inode *inode, struct file *file,
2042 unsigned int cmd, unsigned long arg)
2044 struct ll_sb_info *sbi = ll_i2sbi(inode);
2045 struct ptlrpc_request *req = NULL;
2050 case EXT3_IOC_GETFLAGS: {
2051 struct mdt_body *body;
2052 struct obd_capa *oc;
2054 oc = ll_mdscapa_get(inode);
2055 rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
2056 OBD_MD_FLFLAGS, 0, &req);
2059 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
2063 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2065 flags = body->flags;
2067 ptlrpc_req_finished(req);
2069 RETURN(put_user(flags, (int *)arg));
2071 case EXT3_IOC_SETFLAGS: {
2072 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
2073 struct obd_info oinfo = { { { 0 } } };
2074 struct md_op_data *op_data;
2076 if (get_user(flags, (int *)arg))
2080 OBDO_ALLOC(oinfo.oi_oa);
2084 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2085 LUSTRE_OPC_ANY, NULL);
2086 if (IS_ERR(op_data))
2087 RETURN(PTR_ERR(op_data));
2089 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
2090 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
2091 rc = md_setattr(sbi->ll_md_exp, op_data,
2092 NULL, 0, NULL, 0, &req, NULL);
2093 ll_finish_md_op_data(op_data);
2094 ptlrpc_req_finished(req);
2095 if (rc || lsm == NULL) {
2096 OBDO_FREE(oinfo.oi_oa);
2100 oinfo.oi_oa->o_id = lsm->lsm_object_id;
2101 oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
2102 oinfo.oi_oa->o_flags = flags;
2103 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
2105 oinfo.oi_capa = ll_mdscapa_get(inode);
2107 obdo_from_inode(oinfo.oi_oa, inode,
2108 OBD_MD_FLFID | OBD_MD_FLGENER);
2109 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
2110 capa_put(oinfo.oi_capa);
2111 OBDO_FREE(oinfo.oi_oa);
2113 if (rc != -EPERM && rc != -EACCES)
2114 CERROR("md_setattr_async fails: rc = %d\n", rc);
2118 inode->i_flags = ll_ext_to_inode_flags(flags |
2119 MDS_BFLAG_EXT_FLAGS);
2129 int ll_flush_ctx(struct inode *inode)
2131 struct ll_sb_info *sbi = ll_i2sbi(inode);
2133 CDEBUG(D_SEC, "flush context for user %d\n", current->uid);
2135 obd_set_info_async(sbi->ll_md_exp,
2136 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2138 obd_set_info_async(sbi->ll_dt_exp,
2139 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2144 /* umount -f client means force down, don't save state */
2145 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
2146 void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
2148 struct super_block *sb = vfsmnt->mnt_sb;
2150 void ll_umount_begin(struct super_block *sb)
2153 struct lustre_sb_info *lsi = s2lsi(sb);
2154 struct ll_sb_info *sbi = ll_s2sbi(sb);
2155 struct obd_device *obd;
2156 struct obd_ioctl_data ioc_data = { 0 };
2159 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
2160 if (!(flags & MNT_FORCE)) {
2166 /* Tell the MGC we got umount -f */
2167 lsi->lsi_flags |= LSI_UMOUNT_FORCE;
2169 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2170 sb->s_count, atomic_read(&sb->s_active));
2172 obd = class_exp2obd(sbi->ll_md_exp);
2174 CERROR("Invalid MDC connection handle "LPX64"\n",
2175 sbi->ll_md_exp->exp_handle.h_cookie);
2180 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp, sizeof ioc_data,
2183 obd = class_exp2obd(sbi->ll_dt_exp);
2185 CERROR("Invalid LOV connection handle "LPX64"\n",
2186 sbi->ll_dt_exp->exp_handle.h_cookie);
2192 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp, sizeof ioc_data,
2195 /* Really, we'd like to wait until there are no requests outstanding,
2196 * and then continue. For now, we just invalidate the requests,
2197 * schedule, and hope.
2204 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2206 struct ll_sb_info *sbi = ll_s2sbi(sb);
2210 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2211 read_only = *flags & MS_RDONLY;
2212 err = obd_set_info_async(sbi->ll_md_exp,
2213 sizeof(KEY_READ_ONLY),
2214 KEY_READ_ONLY, sizeof(read_only),
2217 CERROR("Failed to change the read-only flag during "
2218 "remount: %d\n", err);
2223 sb->s_flags |= MS_RDONLY;
2225 sb->s_flags &= ~MS_RDONLY;
2230 int ll_prep_inode(struct inode **inode,
2231 struct ptlrpc_request *req,
2232 struct super_block *sb)
2234 struct ll_sb_info *sbi = NULL;
2235 struct lustre_md md;
2239 LASSERT(*inode || sb);
2240 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2241 prune_deathrow(sbi, 1);
2242 memset(&md, 0, sizeof(struct lustre_md));
2244 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2245 sbi->ll_md_exp, &md);
2250 ll_update_inode(*inode, &md);
2252 LASSERT(sb != NULL);
2255 * At this point server returns to client's same fid as client
2256 * generated for creating. So using ->fid1 is okay here.
2258 LASSERT(fid_is_sane(&md.body->fid1));
2260 *inode = ll_iget(sb, ll_fid_build_ino(sbi, &md.body->fid1), &md);
2261 if (*inode == NULL || is_bad_inode(*inode)) {
2263 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2264 #ifdef CONFIG_FS_POSIX_ACL
2266 posix_acl_release(md.posix_acl);
2267 md.posix_acl = NULL;
2271 CERROR("new_inode -fatal: rc %d\n", rc);
2276 rc = obd_checkmd(sbi->ll_dt_exp, sbi->ll_md_exp,
2277 ll_i2info(*inode)->lli_smd);
2279 md_free_lustre_md(sbi->ll_md_exp, &md);
2283 char *llap_origins[] = {
2284 [LLAP_ORIGIN_UNKNOWN] = "--",
2285 [LLAP_ORIGIN_READPAGE] = "rp",
2286 [LLAP_ORIGIN_READAHEAD] = "ra",
2287 [LLAP_ORIGIN_COMMIT_WRITE] = "cw",
2288 [LLAP_ORIGIN_WRITEPAGE] = "wp",
2289 [LLAP_ORIGIN_LOCKLESS_IO] = "ls"
2292 struct ll_async_page *llite_pglist_next_llap(struct list_head *head,
2293 struct list_head *list)
2295 struct ll_async_page *llap;
2296 struct list_head *pos;
2298 list_for_each(pos, list) {
2301 llap = list_entry(pos, struct ll_async_page, llap_pglist_item);
2302 if (llap->llap_page == NULL)
2310 int ll_obd_statfs(struct inode *inode, void *arg)
2312 struct ll_sb_info *sbi = NULL;
2313 struct obd_export *exp;
2315 struct obd_ioctl_data *data = NULL;
2319 if (!inode || !(sbi = ll_i2sbi(inode)))
2320 GOTO(out_statfs, rc = -EINVAL);
2322 rc = obd_ioctl_getdata(&buf, &len, arg);
2324 GOTO(out_statfs, rc);
2327 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2328 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2329 GOTO(out_statfs, rc = -EINVAL);
2331 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2332 if (type == LL_STATFS_MDC)
2333 exp = sbi->ll_md_exp;
2334 else if (type == LL_STATFS_LOV)
2335 exp = sbi->ll_dt_exp;
2337 GOTO(out_statfs, rc = -ENODEV);
2339 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2341 GOTO(out_statfs, rc);
2344 obd_ioctl_freedata(buf, len);
2348 int ll_process_config(struct lustre_cfg *lcfg)
2352 struct lprocfs_static_vars lvars;
2356 lprocfs_llite_init_vars(&lvars);
2358 /* The instance name contains the sb: lustre-client-aacfe000 */
2359 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2360 if (!ptr || !*(++ptr))
2362 if (sscanf(ptr, "%lx", &x) != 1)
2365 /* This better be a real Lustre superblock! */
2366 LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2368 /* Note we have not called client_common_fill_super yet, so
2369 proc fns must be able to handle that! */
2370 rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
2375 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2376 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2377 struct inode *i1, struct inode *i2,
2378 const char *name, int namelen,
2379 int mode, __u32 opc, void *data)
2381 LASSERT(i1 != NULL);
2383 if (namelen > ll_i2sbi(i1)->ll_namelen)
2384 return ERR_PTR(-ENAMETOOLONG);
2386 if (op_data == NULL)
2387 OBD_ALLOC_PTR(op_data);
2389 if (op_data == NULL)
2390 return ERR_PTR(-ENOMEM);
2392 ll_i2gids(op_data->op_suppgids, i1, i2);
2393 op_data->op_fid1 = *ll_inode2fid(i1);
2394 op_data->op_capa1 = ll_mdscapa_get(i1);
2397 op_data->op_fid2 = *ll_inode2fid(i2);
2398 op_data->op_capa2 = ll_mdscapa_get(i2);
2400 fid_zero(&op_data->op_fid2);
2401 op_data->op_capa2 = NULL;
2404 op_data->op_name = name;
2405 op_data->op_namelen = namelen;
2406 op_data->op_mode = mode;
2407 op_data->op_mod_time = cfs_time_current_sec();
2408 op_data->op_fsuid = current->fsuid;
2409 op_data->op_fsgid = current->fsgid;
2410 op_data->op_cap = cfs_curproc_cap_pack();
2411 op_data->op_bias = MDS_CHECK_SPLIT;
2412 op_data->op_opc = opc;
2413 op_data->op_mds = 0;
2414 op_data->op_data = data;
2419 void ll_finish_md_op_data(struct md_op_data *op_data)
2421 capa_put(op_data->op_capa1);
2422 capa_put(op_data->op_capa2);
2423 OBD_FREE_PTR(op_data);
2426 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2428 struct ll_sb_info *sbi;
2430 LASSERT((seq != NULL) && (vfs != NULL));
2431 sbi = ll_s2sbi(vfs->mnt_sb);
2433 if (sbi->ll_flags & LL_SBI_NOLCK)
2434 seq_puts(seq, ",nolock");
2436 if (sbi->ll_flags & LL_SBI_FLOCK)
2437 seq_puts(seq, ",flock");
2439 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2440 seq_puts(seq, ",localflock");
2442 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2443 seq_puts(seq, ",user_xattr");
2445 if (sbi->ll_flags & LL_SBI_ACL)
2446 seq_puts(seq, ",acl");