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;
79 sbi->ll_contention_time = SBI_DEFAULT_CONTENTION_SECONDS;
80 sbi->ll_lockless_truncate_enable = SBI_DEFAULT_LOCKLESS_TRUNCATE_ENABLE;
81 INIT_LIST_HEAD(&sbi->ll_conn_chain);
82 INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
84 ll_generate_random_uuid(uuid);
85 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
86 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
88 spin_lock(&ll_sb_lock);
89 list_add_tail(&sbi->ll_list, &ll_super_blocks);
90 spin_unlock(&ll_sb_lock);
92 #ifdef ENABLE_LLITE_CHECKSUM
93 sbi->ll_flags |= LL_SBI_CHECKSUM;
96 #ifdef HAVE_LRU_RESIZE_SUPPORT
97 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
100 #ifdef HAVE_EXPORT___IGET
101 INIT_LIST_HEAD(&sbi->ll_deathrow);
102 spin_lock_init(&sbi->ll_deathrow_lock);
104 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
105 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_r_hist.oh_lock);
106 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_w_hist.oh_lock);
112 void ll_free_sbi(struct super_block *sb)
114 struct ll_sb_info *sbi = ll_s2sbi(sb);
118 spin_lock(&ll_sb_lock);
119 list_del(&sbi->ll_list);
120 spin_unlock(&ll_sb_lock);
121 OBD_FREE(sbi, sizeof(*sbi));
126 static struct dentry_operations ll_d_root_ops = {
127 #ifdef DCACHE_LUSTRE_INVALID
128 .d_compare = ll_dcompare,
132 /* Initialize the default and maximum LOV EA and cookie sizes. This allows
133 * us to make MDS RPCs with large enough reply buffers to hold the
134 * maximum-sized (= maximum striped) EA and cookie without having to
135 * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
136 static int ll_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
138 struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC };
139 __u32 valsize = sizeof(struct lov_desc);
140 int rc, easize, def_easize, cookiesize;
141 struct lov_desc desc;
145 rc = obd_get_info(dt_exp, strlen(KEY_LOVDESC) + 1, KEY_LOVDESC,
150 stripes = min(desc.ld_tgt_count, (__u32)LOV_MAX_STRIPE_COUNT);
151 lsm.lsm_stripe_count = stripes;
152 easize = obd_size_diskmd(dt_exp, &lsm);
154 lsm.lsm_stripe_count = desc.ld_default_stripe_count;
155 def_easize = obd_size_diskmd(dt_exp, &lsm);
157 cookiesize = stripes * sizeof(struct llog_cookie);
159 CDEBUG(D_HA, "updating max_mdsize/max_cookiesize: %d/%d\n",
162 rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize);
166 static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
168 struct inode *root = 0;
169 struct ll_sb_info *sbi = ll_s2sbi(sb);
170 struct obd_device *obd;
171 struct lu_fid rootfid;
172 struct obd_capa *oc = NULL;
173 struct obd_statfs osfs;
174 struct ptlrpc_request *request = NULL;
175 struct lustre_handle dt_conn = {0, };
176 struct lustre_handle md_conn = {0, };
177 struct obd_connect_data *data = NULL;
178 struct lustre_md lmd;
180 int size, err, checksum;
183 obd = class_name2obd(md);
185 CERROR("MD %s: not setup or attached\n", md);
193 if (proc_lustre_fs_root) {
194 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
197 CERROR("could not register mount in /proc/lustre");
200 /* indicate the features supported by this client */
201 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
202 OBD_CONNECT_JOIN | OBD_CONNECT_ATTRFID |
203 OBD_CONNECT_VERSION | OBD_CONNECT_MDS_CAPA |
204 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_CANCELSET|
207 #ifdef HAVE_LRU_RESIZE_SUPPORT
208 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
209 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
211 #ifdef CONFIG_FS_POSIX_ACL
212 data->ocd_connect_flags |= OBD_CONNECT_ACL;
214 data->ocd_ibits_known = MDS_INODELOCK_FULL;
215 data->ocd_version = LUSTRE_VERSION_CODE;
217 if (sb->s_flags & MS_RDONLY)
218 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
219 if (sbi->ll_flags & LL_SBI_USER_XATTR)
220 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
222 #ifdef HAVE_MS_FLOCK_LOCK
223 /* force vfs to use lustre handler for flock() calls - bug 10743 */
224 sb->s_flags |= MS_FLOCK_LOCK;
227 if (sbi->ll_flags & LL_SBI_FLOCK)
228 sbi->ll_fop = &ll_file_operations_flock;
229 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
230 sbi->ll_fop = &ll_file_operations;
232 sbi->ll_fop = &ll_file_operations_noflock;
235 data->ocd_connect_flags |= OBD_CONNECT_REAL;
236 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
237 data->ocd_connect_flags &= ~OBD_CONNECT_LCL_CLIENT;
238 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT;
240 data->ocd_connect_flags &= ~OBD_CONNECT_RMT_CLIENT;
241 data->ocd_connect_flags |= OBD_CONNECT_LCL_CLIENT;
244 err = obd_connect(NULL, &md_conn, obd, &sbi->ll_sb_uuid, data, NULL);
246 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
247 "recovery, of which this client is not a "
248 "part. Please wait for recovery to complete,"
249 " abort, or time out.\n", md);
252 CERROR("cannot connect to %s: rc = %d\n", md, err);
255 sbi->ll_md_exp = class_conn2export(&md_conn);
257 err = obd_fid_init(sbi->ll_md_exp);
259 CERROR("Can't init metadata layer FID infrastructure, "
264 err = obd_statfs(obd, &osfs, cfs_time_current_64() - HZ, 0);
266 GOTO(out_md_fid, err);
268 size = sizeof(*data);
269 err = obd_get_info(sbi->ll_md_exp, strlen(KEY_CONN_DATA),
270 KEY_CONN_DATA, &size, data);
272 CERROR("Get connect data failed: %d \n", err);
276 LASSERT(osfs.os_bsize);
277 sb->s_blocksize = osfs.os_bsize;
278 sb->s_blocksize_bits = log2(osfs.os_bsize);
279 sb->s_magic = LL_SUPER_MAGIC;
281 /* for bug 11559. in $LINUX/fs/read_write.c, function do_sendfile():
282 * retval = in_file->f_op->sendfile(...);
284 * retval = -EOVERFLOW;
286 * it will check if *ppos is greater than max. However, max equals to
287 * s_maxbytes, which is a negative integer in a x86_64 box since loff_t
288 * has been defined as a signed long long ineger in linux kernel. */
289 #if BITS_PER_LONG == 64
290 sb->s_maxbytes = PAGE_CACHE_MAXBYTES >> 1;
292 sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
294 sbi->ll_namelen = osfs.os_namelen;
295 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
297 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
298 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
299 LCONSOLE_INFO("Disabling user_xattr feature because "
300 "it is not supported on the server\n");
301 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
304 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
306 sb->s_flags |= MS_POSIXACL;
308 sbi->ll_flags |= LL_SBI_ACL;
310 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
312 sb->s_flags &= ~MS_POSIXACL;
314 sbi->ll_flags &= ~LL_SBI_ACL;
317 if (data->ocd_connect_flags & OBD_CONNECT_JOIN)
318 sbi->ll_flags |= LL_SBI_JOIN;
320 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
321 if (!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT)) {
322 /* sometimes local client claims to be remote, but mdt
323 * will disagree when client gss not applied. */
324 LCONSOLE_INFO("client claims to be remote, but server "
325 "rejected, forced to be local.\n");
326 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
329 if (!(data->ocd_connect_flags & OBD_CONNECT_LCL_CLIENT)) {
330 /* with gss applied, remote client can not claim to be
331 * local, so mdt maybe force client to be remote. */
332 LCONSOLE_INFO("client claims to be local, but server "
333 "rejected, forced to be remote.\n");
334 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
338 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
339 LCONSOLE_INFO("client enabled MDS capability!\n");
340 sbi->ll_flags |= LL_SBI_MDS_CAPA;
343 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
344 LCONSOLE_INFO("client enabled OSS capability!\n");
345 sbi->ll_flags |= LL_SBI_OSS_CAPA;
348 sbi->ll_sdev_orig = sb->s_dev;
349 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
350 /* We set sb->s_dev equal on all lustre clients in order to support
351 * NFS export clustering. NFSD requires that the FSID be the same
353 /* s_dev is also used in lt_compare() to compare two fs, but that is
354 * only a node-local comparison. */
356 /* XXX: this will not work with LMV */
357 sb->s_dev = get_uuid2int(sbi2mdc(sbi)->cl_target_uuid.uuid,
358 strlen(sbi2mdc(sbi)->cl_target_uuid.uuid));
361 obd = class_name2obd(dt);
363 CERROR("DT %s: not setup or attached\n", dt);
364 GOTO(out_md_fid, err = -ENODEV);
367 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
368 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
369 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
370 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK;
371 if (sbi->ll_flags & LL_SBI_OSS_CAPA)
372 data->ocd_connect_flags |= OBD_CONNECT_OSS_CAPA;
374 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
375 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
376 * disabled by default, because it can still be enabled on the
377 * fly via /proc. As a consequence, we still need to come to an
378 * agreement on the supported algorithms at connect time */
379 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
381 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
382 data->ocd_cksum_types = OBD_CKSUM_ADLER;
384 /* send the list of supported checksum types */
385 data->ocd_cksum_types = OBD_CKSUM_ALL;
388 #ifdef HAVE_LRU_RESIZE_SUPPORT
389 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
391 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
392 "ocd_grant: %d\n", data->ocd_connect_flags,
393 data->ocd_version, data->ocd_grant);
395 obd->obd_upcall.onu_owner = &sbi->ll_lco;
396 obd->obd_upcall.onu_upcall = ll_ocd_update;
397 data->ocd_brw_size = PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT;
399 err = obd_connect(NULL, &dt_conn, obd, &sbi->ll_sb_uuid, data, NULL);
401 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
402 "recovery, of which this client is not a "
403 "part. Please wait for recovery to "
404 "complete, abort, or time out.\n", dt);
405 GOTO(out_md_fid, err);
407 CERROR("Cannot connect to %s: rc = %d\n", dt, err);
408 GOTO(out_md_fid, err);
411 sbi->ll_dt_exp = class_conn2export(&dt_conn);
413 err = obd_fid_init(sbi->ll_dt_exp);
415 CERROR("Can't init data layer FID infrastructure, "
420 spin_lock(&sbi->ll_lco.lco_lock);
421 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
422 spin_unlock(&sbi->ll_lco.lco_lock);
424 ll_init_ea_size(sbi->ll_md_exp, sbi->ll_dt_exp);
426 err = obd_prep_async_page(sbi->ll_dt_exp, NULL, NULL, NULL,
427 0, NULL, NULL, NULL);
429 LCONSOLE_ERROR_MSG(0x151, "There are no OST's in this "
430 "filesystem. There must be at least one "
431 "active OST for a client to start.\n");
432 GOTO(out_dt_fid, err);
435 if (!ll_async_page_slab) {
436 ll_async_page_slab_size =
437 size_round(sizeof(struct ll_async_page)) + err;
438 ll_async_page_slab = cfs_mem_cache_create("ll_async_page",
439 ll_async_page_slab_size,
441 if (!ll_async_page_slab)
442 GOTO(out_dt_fid, err = -ENOMEM);
445 err = md_getstatus(sbi->ll_md_exp, &rootfid, &oc);
447 CERROR("cannot mds_connect: rc = %d\n", err);
448 GOTO(out_dt_fid, err);
450 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&rootfid));
451 sbi->ll_root_fid = rootfid;
453 sb->s_op = &lustre_super_operations;
454 sb->s_export_op = &lustre_export_operations;
457 * XXX: move this to after cbd setup? */
458 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
459 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
460 valid |= OBD_MD_FLRMTPERM;
461 else if (sbi->ll_flags & LL_SBI_ACL)
462 valid |= OBD_MD_FLACL;
464 err = md_getattr(sbi->ll_md_exp, &rootfid, oc, valid, 0, &request);
468 CERROR("md_getattr failed for root: rc = %d\n", err);
469 GOTO(out_dt_fid, err);
471 memset(&lmd, 0, sizeof(lmd));
472 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
473 sbi->ll_md_exp, &lmd);
475 CERROR("failed to understand root inode md: rc = %d\n", err);
476 ptlrpc_req_finished (request);
477 GOTO(out_dt_fid, err);
480 LASSERT(fid_is_sane(&sbi->ll_root_fid));
481 root = ll_iget(sb, ll_fid_build_ino(sbi, &sbi->ll_root_fid), &lmd);
482 md_free_lustre_md(sbi->ll_md_exp, &lmd);
483 ptlrpc_req_finished(request);
485 if (root == NULL || is_bad_inode(root)) {
487 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
488 #ifdef CONFIG_FS_POSIX_ACL
490 posix_acl_release(lmd.posix_acl);
491 lmd.posix_acl = NULL;
494 CERROR("lustre_lite: bad iget4 for root\n");
495 GOTO(out_root, err = -EBADF);
498 err = ll_close_thread_start(&sbi->ll_lcq);
500 CERROR("cannot start close thread: rc %d\n", err);
504 #ifdef CONFIG_FS_POSIX_ACL
505 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
506 rct_init(&sbi->ll_rct);
507 et_init(&sbi->ll_et);
511 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
512 err = obd_set_info_async(sbi->ll_dt_exp, strlen("checksum"),"checksum",
513 sizeof(checksum), &checksum, NULL);
515 sb->s_root = d_alloc_root(root);
517 OBD_FREE(data, sizeof(*data));
518 sb->s_root->d_op = &ll_d_root_ops;
524 obd_fid_fini(sbi->ll_dt_exp);
526 obd_disconnect(sbi->ll_dt_exp);
527 sbi->ll_dt_exp = NULL;
529 obd_fid_fini(sbi->ll_md_exp);
531 obd_disconnect(sbi->ll_md_exp);
532 sbi->ll_md_exp = NULL;
536 lprocfs_unregister_mountpoint(sbi);
540 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
544 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
546 rc = obd_get_info(sbi->ll_md_exp, strlen("max_easize"), "max_easize",
549 CERROR("Get max mdsize error rc %d \n", rc);
554 void ll_dump_inode(struct inode *inode)
556 struct list_head *tmp;
557 int dentry_count = 0;
559 LASSERT(inode != NULL);
561 list_for_each(tmp, &inode->i_dentry)
564 CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
565 inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
566 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
569 void lustre_dump_dentry(struct dentry *dentry, int recur)
571 struct list_head *tmp;
574 LASSERT(dentry != NULL);
576 list_for_each(tmp, &dentry->d_subdirs)
579 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
580 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
581 dentry->d_name.len, dentry->d_name.name,
582 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
583 dentry->d_parent, dentry->d_inode, atomic_read(&dentry->d_count),
584 dentry->d_flags, dentry->d_fsdata, subdirs);
585 if (dentry->d_inode != NULL)
586 ll_dump_inode(dentry->d_inode);
591 list_for_each(tmp, &dentry->d_subdirs) {
592 struct dentry *d = list_entry(tmp, struct dentry, d_child);
593 lustre_dump_dentry(d, recur - 1);
597 #ifdef HAVE_EXPORT___IGET
598 static void prune_dir_dentries(struct inode *inode)
600 struct dentry *dentry, *prev = NULL;
602 /* due to lustre specific logic, a directory
603 * can have few dentries - a bug from VFS POV */
605 spin_lock(&dcache_lock);
606 if (!list_empty(&inode->i_dentry)) {
607 dentry = list_entry(inode->i_dentry.prev,
608 struct dentry, d_alias);
609 /* in order to prevent infinite loops we
610 * break if previous dentry is busy */
611 if (dentry != prev) {
614 spin_unlock(&dcache_lock);
616 /* try to kill all child dentries */
618 shrink_dcache_parent(dentry);
619 unlock_dentry(dentry);
622 /* now try to get rid of current dentry */
623 d_prune_aliases(inode);
627 spin_unlock(&dcache_lock);
630 static void prune_deathrow_one(struct ll_inode_info *lli)
632 struct inode *inode = ll_info2i(lli);
634 /* first, try to drop any dentries - they hold a ref on the inode */
635 if (S_ISDIR(inode->i_mode))
636 prune_dir_dentries(inode);
638 d_prune_aliases(inode);
641 /* if somebody still uses it, leave it */
642 LASSERT(atomic_read(&inode->i_count) > 0);
643 if (atomic_read(&inode->i_count) > 1)
646 CDEBUG(D_INODE, "inode %lu/%u(%d) looks a good candidate for prune\n",
647 inode->i_ino,inode->i_generation, atomic_read(&inode->i_count));
649 /* seems nobody uses it anymore */
657 static void prune_deathrow(struct ll_sb_info *sbi, int try)
659 struct ll_inode_info *lli;
663 if (need_resched() && try)
667 if (!spin_trylock(&sbi->ll_deathrow_lock))
670 spin_lock(&sbi->ll_deathrow_lock);
675 if (!list_empty(&sbi->ll_deathrow)) {
676 lli = list_entry(sbi->ll_deathrow.next,
677 struct ll_inode_info,
679 list_del_init(&lli->lli_dead_list);
680 if (!list_empty(&sbi->ll_deathrow))
683 spin_unlock(&sbi->ll_deathrow_lock);
686 prune_deathrow_one(lli);
688 } while (empty == 0);
690 #else /* !HAVE_EXPORT___IGET */
691 #define prune_deathrow(sbi, try) do {} while (0)
692 #endif /* HAVE_EXPORT___IGET */
694 void client_common_put_super(struct super_block *sb)
696 struct ll_sb_info *sbi = ll_s2sbi(sb);
699 #ifdef CONFIG_FS_POSIX_ACL
700 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
701 et_fini(&sbi->ll_et);
702 rct_fini(&sbi->ll_rct);
706 obd_cancel_unused(sbi->ll_dt_exp, NULL, 0, NULL);
708 ll_close_thread_shutdown(sbi->ll_lcq);
710 /* destroy inodes in deathrow */
711 prune_deathrow(sbi, 0);
713 list_del(&sbi->ll_conn_chain);
715 obd_fid_fini(sbi->ll_dt_exp);
716 obd_disconnect(sbi->ll_dt_exp);
717 sbi->ll_dt_exp = NULL;
719 lprocfs_unregister_mountpoint(sbi);
721 obd_fid_fini(sbi->ll_md_exp);
722 obd_disconnect(sbi->ll_md_exp);
723 sbi->ll_md_exp = NULL;
728 void ll_kill_super(struct super_block *sb)
730 struct ll_sb_info *sbi;
735 if (!(sb->s_flags & MS_ACTIVE))
739 /* we need restore s_dev from changed for clustred NFS before put_super
740 * because new kernels have cached s_dev and change sb->s_dev in
741 * put_super not affected real removing devices */
743 sb->s_dev = sbi->ll_sdev_orig;
747 char *ll_read_opt(const char *opt, char *data)
753 CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
754 if (strncmp(opt, data, strlen(opt)))
756 if ((value = strchr(data, '=')) == NULL)
760 OBD_ALLOC(retval, strlen(value) + 1);
762 CERROR("out of memory!\n");
766 memcpy(retval, value, strlen(value)+1);
767 CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
771 static inline int ll_set_opt(const char *opt, char *data, int fl)
773 if (strncmp(opt, data, strlen(opt)) != 0)
779 /* non-client-specific mount options are parsed in lmd_parse */
780 static int ll_options(char *options, int *flags)
783 char *s1 = options, *s2;
789 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
792 CDEBUG(D_SUPER, "next opt=%s\n", s1);
793 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
798 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
803 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
808 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
813 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
818 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
823 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
825 /* Ignore deprecated mount option. The client will
826 * always try to mount with ACL support, whether this
827 * is used depends on whether server supports it. */
830 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
834 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
840 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
845 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
850 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
855 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
861 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
867 s2 = strchr(s1, ',');
875 void ll_lli_init(struct ll_inode_info *lli)
877 lli->lli_inode_magic = LLI_INODE_MAGIC;
878 sema_init(&lli->lli_size_sem, 1);
879 sema_init(&lli->lli_write_sem, 1);
881 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
882 spin_lock_init(&lli->lli_lock);
883 INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
884 INIT_LIST_HEAD(&lli->lli_close_list);
885 lli->lli_inode_magic = LLI_INODE_MAGIC;
886 sema_init(&lli->lli_och_sem, 1);
887 lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
888 lli->lli_mds_exec_och = NULL;
889 lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
890 lli->lli_open_fd_exec_count = 0;
891 INIT_LIST_HEAD(&lli->lli_dead_list);
892 lli->lli_remote_perms = NULL;
893 lli->lli_rmtperm_utime = 0;
894 sema_init(&lli->lli_rmtperm_sem, 1);
895 INIT_LIST_HEAD(&lli->lli_oss_capas);
898 int ll_fill_super(struct super_block *sb)
900 struct lustre_profile *lprof;
901 struct lustre_sb_info *lsi = s2lsi(sb);
902 struct ll_sb_info *sbi;
903 char *dt = NULL, *md = NULL;
904 char *profilenm = get_profile_name(sb);
905 struct config_llog_instance cfg = {0, };
906 char ll_instance[sizeof(sb) * 2 + 1];
910 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
914 sb->s_type->fs_flags |= FS_RENAME_DOES_D_MOVE;
915 /* client additional sb info */
916 lsi->lsi_llsbi = sbi = ll_init_sbi();
922 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
926 /* Generate a string unique to this super, in case some joker tries
927 to mount the same fs at two mount points.
928 Use the address of the super itself.*/
929 sprintf(ll_instance, "%p", sb);
930 cfg.cfg_instance = ll_instance;
931 cfg.cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
933 /* set up client obds */
934 err = lustre_process_log(sb, profilenm, &cfg);
936 CERROR("Unable to process log: %d\n", err);
940 lprof = class_get_profile(profilenm);
942 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
943 " read from the MGS. Does that filesystem "
944 "exist?\n", profilenm);
945 GOTO(out_free, err = -EINVAL);
947 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
948 lprof->lp_md, lprof->lp_dt);
950 OBD_ALLOC(dt, strlen(lprof->lp_dt) +
951 strlen(ll_instance) + 2);
953 GOTO(out_free, err = -ENOMEM);
954 sprintf(dt, "%s-%s", lprof->lp_dt, ll_instance);
956 OBD_ALLOC(md, strlen(lprof->lp_md) +
957 strlen(ll_instance) + 2);
959 GOTO(out_free, err = -ENOMEM);
960 sprintf(md, "%s-%s", lprof->lp_md, ll_instance);
962 /* connections, registrations, sb setup */
963 err = client_common_fill_super(sb, md, dt);
967 OBD_FREE(md, strlen(md) + 1);
969 OBD_FREE(dt, strlen(dt) + 1);
973 LCONSOLE_WARN("Client %s has started\n", profilenm);
976 } /* ll_fill_super */
979 void ll_put_super(struct super_block *sb)
981 struct config_llog_instance cfg;
982 char ll_instance[sizeof(sb) * 2 + 1];
983 struct obd_device *obd;
984 struct lustre_sb_info *lsi = s2lsi(sb);
985 struct ll_sb_info *sbi = ll_s2sbi(sb);
986 char *profilenm = get_profile_name(sb);
990 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
992 ll_print_capa_stat(sbi);
994 sprintf(ll_instance, "%p", sb);
995 cfg.cfg_instance = ll_instance;
996 lustre_end_log(sb, NULL, &cfg);
998 if (sbi->ll_md_exp) {
999 obd = class_exp2obd(sbi->ll_md_exp);
1001 force = obd->obd_force;
1004 /* We need to set force before the lov_disconnect in
1005 lustre_common_put_super, since l_d cleans up osc's as well. */
1008 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1010 obd->obd_force = force;
1015 /* Only if client_common_fill_super succeeded */
1016 client_common_put_super(sb);
1019 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1020 class_manual_cleanup(obd);
1024 class_del_profile(profilenm);
1027 lsi->lsi_llsbi = NULL;
1029 lustre_common_put_super(sb);
1031 LCONSOLE_WARN("client %s umount complete\n", ll_instance);
1036 } /* client_put_super */
1038 #ifdef HAVE_REGISTER_CACHE
1039 #include <linux/cache_def.h>
1040 #ifdef HAVE_CACHE_RETURN_INT
1045 ll_shrink_cache(int priority, unsigned int gfp_mask)
1047 struct ll_sb_info *sbi;
1050 list_for_each_entry(sbi, &ll_super_blocks, ll_list)
1051 count += llap_shrink_cache(sbi, priority);
1053 #ifdef HAVE_CACHE_RETURN_INT
1058 struct cache_definition ll_cache_definition = {
1059 .name = "llap_cache",
1060 .shrink = ll_shrink_cache
1062 #endif /* HAVE_REGISTER_CACHE */
1064 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
1066 struct inode *inode = NULL;
1067 /* NOTE: we depend on atomic igrab() -bzzz */
1068 lock_res_and_lock(lock);
1069 if (lock->l_ast_data) {
1070 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
1071 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1072 inode = igrab(lock->l_ast_data);
1074 inode = lock->l_ast_data;
1075 ldlm_lock_debug(NULL, inode->i_state & I_FREEING ?
1077 lock, __FILE__, __func__, __LINE__,
1078 "l_ast_data %p is bogus: magic %08x",
1079 lock->l_ast_data, lli->lli_inode_magic);
1083 unlock_res_and_lock(lock);
1087 static int null_if_equal(struct ldlm_lock *lock, void *data)
1089 if (data == lock->l_ast_data) {
1090 lock->l_ast_data = NULL;
1092 if (lock->l_req_mode != lock->l_granted_mode)
1093 LDLM_ERROR(lock,"clearing inode with ungranted lock");
1096 return LDLM_ITER_CONTINUE;
1099 void ll_clear_inode(struct inode *inode)
1101 struct ll_inode_info *lli = ll_i2info(inode);
1102 struct ll_sb_info *sbi = ll_i2sbi(inode);
1105 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1106 inode->i_generation, inode);
1108 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1109 md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
1110 null_if_equal, inode);
1112 LASSERT(!lli->lli_open_fd_write_count);
1113 LASSERT(!lli->lli_open_fd_read_count);
1114 LASSERT(!lli->lli_open_fd_exec_count);
1116 if (lli->lli_mds_write_och)
1117 ll_md_real_close(inode, FMODE_WRITE);
1118 if (lli->lli_mds_exec_och)
1119 ll_md_real_close(inode, FMODE_EXEC);
1120 if (lli->lli_mds_read_och)
1121 ll_md_real_close(inode, FMODE_READ);
1124 obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
1125 null_if_equal, inode);
1127 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1128 lli->lli_smd = NULL;
1131 if (lli->lli_symlink_name) {
1132 OBD_FREE(lli->lli_symlink_name,
1133 strlen(lli->lli_symlink_name) + 1);
1134 lli->lli_symlink_name = NULL;
1137 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1138 LASSERT(lli->lli_posix_acl == NULL);
1139 if (lli->lli_remote_perms) {
1140 free_rmtperm_hash(lli->lli_remote_perms);
1141 lli->lli_remote_perms = NULL;
1144 #ifdef CONFIG_FS_POSIX_ACL
1145 else if (lli->lli_posix_acl) {
1146 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1147 LASSERT(lli->lli_remote_perms == NULL);
1148 posix_acl_release(lli->lli_posix_acl);
1149 lli->lli_posix_acl = NULL;
1152 lli->lli_inode_magic = LLI_INODE_DEAD;
1154 #ifdef HAVE_EXPORT___IGET
1155 spin_lock(&sbi->ll_deathrow_lock);
1156 list_del_init(&lli->lli_dead_list);
1157 spin_unlock(&sbi->ll_deathrow_lock);
1159 ll_clear_inode_capas(inode);
1164 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
1165 struct md_open_data **mod)
1167 struct lustre_md md;
1168 struct ll_sb_info *sbi = ll_i2sbi(inode);
1169 struct ptlrpc_request *request = NULL;
1173 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1174 LUSTRE_OPC_ANY, NULL);
1175 if (IS_ERR(op_data))
1176 RETURN(PTR_ERR(op_data));
1178 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1181 ptlrpc_req_finished(request);
1182 if (rc == -ENOENT) {
1184 /* Unlinked special device node? Or just a race?
1185 * Pretend we done everything. */
1186 if (!S_ISREG(inode->i_mode) &&
1187 !S_ISDIR(inode->i_mode))
1188 rc = inode_setattr(inode, &op_data->op_attr);
1189 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1190 CERROR("md_setattr fails: rc = %d\n", rc);
1195 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1196 sbi->ll_md_exp, &md);
1198 ptlrpc_req_finished(request);
1202 /* We call inode_setattr to adjust timestamps.
1203 * If there is at least some data in file, we cleared ATTR_SIZE
1204 * above to avoid invoking vmtruncate, otherwise it is important
1205 * to call vmtruncate in inode_setattr to update inode->i_size
1207 rc = inode_setattr(inode, &op_data->op_attr);
1209 /* Extract epoch data if obtained. */
1210 op_data->op_handle = md.body->handle;
1211 op_data->op_ioepoch = md.body->ioepoch;
1213 ll_update_inode(inode, &md);
1214 ptlrpc_req_finished(request);
1219 /* Close IO epoch and send Size-on-MDS attribute update. */
1220 static int ll_setattr_done_writing(struct inode *inode,
1221 struct md_op_data *op_data,
1222 struct md_open_data *mod)
1224 struct ll_inode_info *lli = ll_i2info(inode);
1228 LASSERT(op_data != NULL);
1229 if (!S_ISREG(inode->i_mode))
1232 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1233 op_data->op_ioepoch, PFID(&lli->lli_fid));
1235 op_data->op_flags = MF_EPOCH_CLOSE | MF_SOM_CHANGE;
1236 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1237 if (rc == -EAGAIN) {
1238 /* MDS has instructed us to obtain Size-on-MDS attribute
1239 * from OSTs and send setattr to back to MDS. */
1240 rc = ll_sizeonmds_update(inode, mod, &op_data->op_handle,
1241 op_data->op_ioepoch);
1243 CERROR("inode %lu mdc truncate failed: rc = %d\n",
1249 static int ll_setattr_do_truncate(struct inode *inode, loff_t new_size)
1251 struct ll_sb_info *sbi = ll_i2sbi(inode);
1252 struct ll_inode_info *lli = ll_i2info(inode);
1253 struct lov_stripe_md *lsm = lli->lli_smd;
1255 ldlm_policy_data_t policy = { .l_extent = {new_size,
1257 struct lustre_handle lockh = { 0 };
1258 int local_lock = 0; /* 0 - no local lock;
1259 * 1 - lock taken by lock_extent;
1260 * 2 - by obd_match*/
1265 UNLOCK_INODE_MUTEX(inode);
1266 UP_WRITE_I_ALLOC_SEM(inode);
1268 if (sbi->ll_lockless_truncate_enable &&
1269 (sbi->ll_lco.lco_flags & OBD_CONNECT_TRUNCLOCK)) {
1270 ast_flags = LDLM_FL_BLOCK_GRANTED;
1271 rc = obd_match(sbi->ll_dt_exp, lsm, LDLM_EXTENT,
1272 &policy, LCK_PW, &ast_flags, inode, &lockh);
1276 } else if (rc == 0) {
1277 rc = ll_file_punch(inode, new_size, 1);
1280 /* XXX when we fix the AST intents to pass the discard-range
1281 * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
1283 ast_flags = (new_size == 0) ? LDLM_AST_DISCARD_DATA : 0;
1284 rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy,
1286 if (likely(rc == 0))
1290 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1291 DOWN_WRITE_I_ALLOC_SEM(inode);
1292 LOCK_INODE_MUTEX(inode);
1294 LOCK_INODE_MUTEX(inode);
1295 DOWN_WRITE_I_ALLOC_SEM(inode);
1297 if (likely(rc == 0)) {
1298 /* Only ll_inode_size_lock is taken at this level.
1299 * lov_stripe_lock() is grabbed by ll_truncate() only over
1300 * call to obd_adjust_kms(). If vmtruncate returns 0, then
1301 * ll_truncate dropped ll_inode_size_lock() */
1302 ll_inode_size_lock(inode, 0);
1304 spin_lock(&lli->lli_lock);
1305 lli->lli_flags |= LLIF_SRVLOCK;
1306 spin_unlock(&lli->lli_lock);
1308 rc = vmtruncate(inode, new_size);
1310 spin_lock(&lli->lli_lock);
1311 lli->lli_flags &= ~LLIF_SRVLOCK;
1312 spin_unlock(&lli->lli_lock);
1315 LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
1316 ll_inode_size_unlock(inode, 0);
1321 if (local_lock == 2)
1322 err = obd_cancel(sbi->ll_dt_exp, lsm, LCK_PW, &lockh);
1324 err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
1325 if (unlikely(err != 0)){
1326 CERROR("extent unlock failed: err=%d,"
1327 " unlock method =%d\n", err, local_lock);
1335 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1336 * object(s) determine the file size and mtime. Otherwise, the MDS will
1337 * keep these values until such a time that objects are allocated for it.
1338 * We do the MDS operations first, as it is checking permissions for us.
1339 * We don't to the MDS RPC if there is nothing that we want to store there,
1340 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1341 * going to do an RPC anyways.
1343 * If we are doing a truncate, we will send the mtime and ctime updates
1344 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1345 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1348 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1350 struct ll_inode_info *lli = ll_i2info(inode);
1351 struct lov_stripe_md *lsm = lli->lli_smd;
1352 struct ll_sb_info *sbi = ll_i2sbi(inode);
1353 struct md_op_data *op_data = NULL;
1354 struct md_open_data *mod = NULL;
1355 int ia_valid = attr->ia_valid;
1356 int rc = 0, rc1 = 0;
1359 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
1361 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETATTR, 1);
1363 if (ia_valid & ATTR_SIZE) {
1364 if (attr->ia_size > ll_file_maxbytes(inode)) {
1365 CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1366 attr->ia_size, ll_file_maxbytes(inode));
1370 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1373 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1374 if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1375 if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
1379 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1380 if (attr->ia_valid & ATTR_CTIME) {
1381 attr->ia_ctime = CURRENT_TIME;
1382 attr->ia_valid |= ATTR_CTIME_SET;
1384 if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1385 attr->ia_atime = CURRENT_TIME;
1386 attr->ia_valid |= ATTR_ATIME_SET;
1388 if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1389 attr->ia_mtime = CURRENT_TIME;
1390 attr->ia_valid |= ATTR_MTIME_SET;
1392 if ((attr->ia_valid & ATTR_CTIME) && !(attr->ia_valid & ATTR_MTIME)) {
1393 /* To avoid stale mtime on mds, obtain it from ost and send
1395 rc = ll_glimpse_size(inode, 0);
1399 attr->ia_valid |= ATTR_MTIME_SET | ATTR_MTIME;
1400 attr->ia_mtime = inode->i_mtime;
1403 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1404 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1405 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1406 cfs_time_current_sec());
1408 /* NB: ATTR_SIZE will only be set after this point if the size
1409 * resides on the MDS, ie, this file has no objects. */
1411 attr->ia_valid &= ~ATTR_SIZE;
1413 /* We always do an MDS RPC, even if we're only changing the size;
1414 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1416 OBD_ALLOC_PTR(op_data);
1417 if (op_data == NULL)
1420 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1422 /* Open epoch for truncate. */
1423 if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
1424 (ia_valid & ATTR_SIZE))
1425 op_data->op_flags = MF_EPOCH_OPEN;
1427 rc = ll_md_setattr(inode, op_data, &mod);
1431 if (op_data->op_ioepoch)
1432 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID" for "
1433 "truncate\n", op_data->op_ioepoch, PFID(&lli->lli_fid));
1435 if (!lsm || !S_ISREG(inode->i_mode)) {
1436 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1440 /* We really need to get our PW lock before we change inode->i_size.
1441 * If we don't we can race with other i_size updaters on our node, like
1442 * ll_file_read. We can also race with i_size propogation to other
1443 * nodes through dirtying and writeback of final cached pages. This
1444 * last one is especially bad for racing o_append users on other
1446 if (ia_valid & ATTR_SIZE) {
1447 rc = ll_setattr_do_truncate(inode, attr->ia_size);
1448 } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
1450 struct obd_info oinfo = { { { 0 } } };
1453 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
1454 inode->i_ino, LTIME_S(attr->ia_mtime));
1458 oa->o_id = lsm->lsm_object_id;
1459 oa->o_gr = lsm->lsm_object_gr;
1460 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1462 flags = OBD_MD_FLTYPE | OBD_MD_FLATIME |
1463 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
1464 OBD_MD_FLFID | OBD_MD_FLGENER |
1467 obdo_from_inode(oa, inode, flags);
1471 oinfo.oi_capa = ll_mdscapa_get(inode);
1473 /* XXX: this looks unnecessary now. */
1474 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1475 capa_put(oinfo.oi_capa);
1477 CERROR("obd_setattr_async fails: rc=%d\n", rc);
1486 if (op_data->op_ioepoch)
1487 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1488 ll_finish_md_op_data(op_data);
1490 return rc ? rc : rc1;
1493 int ll_setattr(struct dentry *de, struct iattr *attr)
1495 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1496 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1497 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1499 return ll_setattr_raw(de->d_inode, attr);
1502 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1503 __u64 max_age, __u32 flags)
1505 struct ll_sb_info *sbi = ll_s2sbi(sb);
1506 struct obd_statfs obd_osfs;
1510 rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, flags);
1512 CERROR("md_statfs fails: rc = %d\n", rc);
1516 osfs->os_type = sb->s_magic;
1518 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1519 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1521 rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
1522 &obd_osfs, max_age, flags);
1524 CERROR("obd_statfs fails: rc = %d\n", rc);
1528 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1529 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1532 osfs->os_bsize = obd_osfs.os_bsize;
1533 osfs->os_blocks = obd_osfs.os_blocks;
1534 osfs->os_bfree = obd_osfs.os_bfree;
1535 osfs->os_bavail = obd_osfs.os_bavail;
1537 /* If we don't have as many objects free on the OST as inodes
1538 * on the MDS, we reduce the total number of inodes to
1539 * compensate, so that the "inodes in use" number is correct.
1541 if (obd_osfs.os_ffree < osfs->os_ffree) {
1542 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1544 osfs->os_ffree = obd_osfs.os_ffree;
1549 #ifndef HAVE_STATFS_DENTRY_PARAM
1550 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1553 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1555 struct super_block *sb = de->d_sb;
1557 struct obd_statfs osfs;
1560 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1561 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1563 /* For now we will always get up-to-date statfs values, but in the
1564 * future we may allow some amount of caching on the client (e.g.
1565 * from QOS or lprocfs updates). */
1566 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - 1, 0);
1570 statfs_unpack(sfs, &osfs);
1572 /* We need to downshift for all 32-bit kernels, because we can't
1573 * tell if the kernel is being called via sys_statfs64() or not.
1574 * Stop before overflowing f_bsize - in which case it is better
1575 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1576 if (sizeof(long) < 8) {
1577 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1580 osfs.os_blocks >>= 1;
1581 osfs.os_bfree >>= 1;
1582 osfs.os_bavail >>= 1;
1586 sfs->f_blocks = osfs.os_blocks;
1587 sfs->f_bfree = osfs.os_bfree;
1588 sfs->f_bavail = osfs.os_bavail;
1593 void ll_inode_size_lock(struct inode *inode, int lock_lsm)
1595 struct ll_inode_info *lli;
1596 struct lov_stripe_md *lsm;
1598 lli = ll_i2info(inode);
1599 LASSERT(lli->lli_size_sem_owner != current);
1600 down(&lli->lli_size_sem);
1601 LASSERT(lli->lli_size_sem_owner == NULL);
1602 lli->lli_size_sem_owner = current;
1604 LASSERTF(lsm != NULL || lock_lsm == 0, "lsm %p, lock_lsm %d\n",
1607 lov_stripe_lock(lsm);
1610 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
1612 struct ll_inode_info *lli;
1613 struct lov_stripe_md *lsm;
1615 lli = ll_i2info(inode);
1617 LASSERTF(lsm != NULL || unlock_lsm == 0, "lsm %p, lock_lsm %d\n",
1620 lov_stripe_unlock(lsm);
1621 LASSERT(lli->lli_size_sem_owner == current);
1622 lli->lli_size_sem_owner = NULL;
1623 up(&lli->lli_size_sem);
1626 static void ll_replace_lsm(struct inode *inode, struct lov_stripe_md *lsm)
1628 struct ll_inode_info *lli = ll_i2info(inode);
1630 dump_lsm(D_INODE, lsm);
1631 dump_lsm(D_INODE, lli->lli_smd);
1632 LASSERTF(lsm->lsm_magic == LOV_MAGIC_JOIN,
1633 "lsm must be joined lsm %p\n", lsm);
1634 obd_free_memmd(ll_i2dtexp(inode), &lli->lli_smd);
1635 CDEBUG(D_INODE, "replace lsm %p to lli_smd %p for inode %lu%u(%p)\n",
1636 lsm, lli->lli_smd, inode->i_ino, inode->i_generation, inode);
1638 lli->lli_maxbytes = lsm->lsm_maxbytes;
1639 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1640 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1643 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1645 struct ll_inode_info *lli = ll_i2info(inode);
1646 struct mdt_body *body = md->body;
1647 struct lov_stripe_md *lsm = md->lsm;
1648 struct ll_sb_info *sbi = ll_i2sbi(inode);
1650 LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1652 if (lli->lli_smd == NULL) {
1653 if (lsm->lsm_magic != LOV_MAGIC &&
1654 lsm->lsm_magic != LOV_MAGIC_JOIN) {
1655 dump_lsm(D_ERROR, lsm);
1658 CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
1659 lsm, inode->i_ino, inode->i_generation, inode);
1660 /* ll_inode_size_lock() requires it is only called
1661 * with lli_smd != NULL or lock_lsm == 0 or we can
1662 * race between lock/unlock. bug 9547 */
1664 lli->lli_maxbytes = lsm->lsm_maxbytes;
1665 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1666 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1668 if (lli->lli_smd->lsm_magic == lsm->lsm_magic &&
1669 lli->lli_smd->lsm_stripe_count ==
1670 lsm->lsm_stripe_count) {
1671 if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
1672 CERROR("lsm mismatch for inode %ld\n",
1674 CERROR("lli_smd:\n");
1675 dump_lsm(D_ERROR, lli->lli_smd);
1677 dump_lsm(D_ERROR, lsm);
1681 ll_replace_lsm(inode, lsm);
1683 if (lli->lli_smd != lsm)
1684 obd_free_memmd(ll_i2dtexp(inode), &lsm);
1687 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1688 if (body->valid & OBD_MD_FLRMTPERM)
1689 ll_update_remote_perm(inode, md->remote_perm);
1691 #ifdef CONFIG_FS_POSIX_ACL
1692 else if (body->valid & OBD_MD_FLACL) {
1693 spin_lock(&lli->lli_lock);
1694 if (lli->lli_posix_acl)
1695 posix_acl_release(lli->lli_posix_acl);
1696 lli->lli_posix_acl = md->posix_acl;
1697 spin_unlock(&lli->lli_lock);
1700 if (body->valid & OBD_MD_FLATIME &&
1701 body->atime > LTIME_S(inode->i_atime))
1702 LTIME_S(inode->i_atime) = body->atime;
1704 /* mtime is always updated with ctime, but can be set in past.
1705 As write and utime(2) may happen within 1 second, and utime's
1706 mtime has a priority over write's one, so take mtime from mds
1707 for the same ctimes. */
1708 if (body->valid & OBD_MD_FLCTIME &&
1709 body->ctime >= LTIME_S(inode->i_ctime)) {
1710 LTIME_S(inode->i_ctime) = body->ctime;
1711 if (body->valid & OBD_MD_FLMTIME) {
1712 CDEBUG(D_INODE, "setting ino %lu mtime "
1713 "from %lu to "LPU64"\n", inode->i_ino,
1714 LTIME_S(inode->i_mtime), body->mtime);
1715 LTIME_S(inode->i_mtime) = body->mtime;
1718 if (body->valid & OBD_MD_FLMODE)
1719 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
1720 if (body->valid & OBD_MD_FLTYPE)
1721 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
1722 if (S_ISREG(inode->i_mode)) {
1723 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
1725 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1727 #ifdef HAVE_INODE_BLKSIZE
1728 inode->i_blksize = 1<<inode->i_blkbits;
1730 if (body->valid & OBD_MD_FLUID)
1731 inode->i_uid = body->uid;
1732 if (body->valid & OBD_MD_FLGID)
1733 inode->i_gid = body->gid;
1734 if (body->valid & OBD_MD_FLFLAGS)
1735 inode->i_flags = ll_ext_to_inode_flags(body->flags);
1736 if (body->valid & OBD_MD_FLNLINK)
1737 inode->i_nlink = body->nlink;
1738 if (body->valid & OBD_MD_FLRDEV)
1739 inode->i_rdev = old_decode_dev(body->rdev);
1741 if (body->valid & OBD_MD_FLID) {
1742 /* FID shouldn't be changed! */
1743 if (fid_is_sane(&lli->lli_fid)) {
1744 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
1745 "Trying to change FID "DFID
1746 " to the "DFID", inode %lu/%u(%p)\n",
1747 PFID(&lli->lli_fid), PFID(&body->fid1),
1748 inode->i_ino, inode->i_generation, inode);
1750 lli->lli_fid = body->fid1;
1753 LASSERT(fid_seq(&lli->lli_fid) != 0);
1755 if (body->valid & OBD_MD_FLSIZE) {
1756 if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
1757 S_ISREG(inode->i_mode) && lli->lli_smd) {
1758 struct lustre_handle lockh;
1761 /* As it is possible a blocking ast has been processed
1762 * by this time, we need to check there is an UPDATE
1763 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
1765 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
1768 if (lli->lli_flags & (LLIF_DONE_WRITING |
1769 LLIF_EPOCH_PENDING |
1771 CERROR("ino %lu flags %lu still has "
1772 "size authority! do not trust "
1773 "the size got from MDS\n",
1774 inode->i_ino, lli->lli_flags);
1776 /* Use old size assignment to avoid
1777 * deadlock bz14138 & bz14326 */
1778 inode->i_size = body->size;
1779 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
1781 ldlm_lock_decref(&lockh, mode);
1784 /* Use old size assignment to avoid
1785 * deadlock bz14138 & bz14326 */
1786 inode->i_size = body->size;
1789 if (body->valid & OBD_MD_FLBLOCKS)
1790 inode->i_blocks = body->blocks;
1793 if (body->valid & OBD_MD_FLMDSCAPA) {
1794 LASSERT(md->mds_capa);
1795 ll_add_capa(inode, md->mds_capa);
1797 if (body->valid & OBD_MD_FLOSSCAPA) {
1798 LASSERT(md->oss_capa);
1799 ll_add_capa(inode, md->oss_capa);
1803 static struct backing_dev_info ll_backing_dev_info = {
1804 .ra_pages = 0, /* No readahead */
1805 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12))
1806 .capabilities = 0, /* Does contribute to dirty memory */
1808 .memory_backed = 0, /* Does contribute to dirty memory */
1812 void ll_read_inode2(struct inode *inode, void *opaque)
1814 struct lustre_md *md = opaque;
1815 struct ll_inode_info *lli = ll_i2info(inode);
1818 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n",
1819 inode->i_ino, inode->i_generation, inode);
1823 LASSERT(!lli->lli_smd);
1825 /* Core attributes from the MDS first. This is a new inode, and
1826 * the VFS doesn't zero times in the core inode so we have to do
1827 * it ourselves. They will be overwritten by either MDS or OST
1828 * attributes - we just need to make sure they aren't newer. */
1829 LTIME_S(inode->i_mtime) = 0;
1830 LTIME_S(inode->i_atime) = 0;
1831 LTIME_S(inode->i_ctime) = 0;
1833 ll_update_inode(inode, md);
1835 /* OIDEBUG(inode); */
1837 if (S_ISREG(inode->i_mode)) {
1838 struct ll_sb_info *sbi = ll_i2sbi(inode);
1839 inode->i_op = &ll_file_inode_operations;
1840 inode->i_fop = sbi->ll_fop;
1841 inode->i_mapping->a_ops = &ll_aops;
1843 } else if (S_ISDIR(inode->i_mode)) {
1844 inode->i_op = &ll_dir_inode_operations;
1845 inode->i_fop = &ll_dir_operations;
1846 inode->i_mapping->a_ops = &ll_dir_aops;
1848 } else if (S_ISLNK(inode->i_mode)) {
1849 inode->i_op = &ll_fast_symlink_inode_operations;
1852 inode->i_op = &ll_special_inode_operations;
1854 init_special_inode(inode, inode->i_mode,
1855 kdev_t_to_nr(inode->i_rdev));
1857 /* initializing backing dev info. */
1858 inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
1864 void ll_delete_inode(struct inode *inode)
1866 struct ll_sb_info *sbi = ll_i2sbi(inode);
1870 rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
1872 CERROR("fid_delete() failed, rc %d\n", rc);
1874 truncate_inode_pages(&inode->i_data, 0);
1880 int ll_iocontrol(struct inode *inode, struct file *file,
1881 unsigned int cmd, unsigned long arg)
1883 struct ll_sb_info *sbi = ll_i2sbi(inode);
1884 struct ptlrpc_request *req = NULL;
1889 case EXT3_IOC_GETFLAGS: {
1890 struct mdt_body *body;
1891 struct obd_capa *oc;
1893 oc = ll_mdscapa_get(inode);
1894 rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
1895 OBD_MD_FLFLAGS, 0, &req);
1898 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1902 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1904 flags = body->flags;
1906 ptlrpc_req_finished(req);
1908 RETURN(put_user(flags, (int *)arg));
1910 case EXT3_IOC_SETFLAGS: {
1911 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1912 struct obd_info oinfo = { { { 0 } } };
1913 struct md_op_data *op_data;
1915 if (get_user(flags, (int *)arg))
1919 OBDO_ALLOC(oinfo.oi_oa);
1923 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
1924 LUSTRE_OPC_ANY, NULL);
1925 if (IS_ERR(op_data))
1926 RETURN(PTR_ERR(op_data));
1928 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
1929 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
1930 rc = md_setattr(sbi->ll_md_exp, op_data,
1931 NULL, 0, NULL, 0, &req, NULL);
1932 ll_finish_md_op_data(op_data);
1933 ptlrpc_req_finished(req);
1934 if (rc || lsm == NULL) {
1935 OBDO_FREE(oinfo.oi_oa);
1939 oinfo.oi_oa->o_id = lsm->lsm_object_id;
1940 oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
1941 oinfo.oi_oa->o_flags = flags;
1942 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
1944 oinfo.oi_capa = ll_mdscapa_get(inode);
1946 obdo_from_inode(oinfo.oi_oa, inode,
1947 OBD_MD_FLFID | OBD_MD_FLGENER);
1948 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1949 capa_put(oinfo.oi_capa);
1950 OBDO_FREE(oinfo.oi_oa);
1952 if (rc != -EPERM && rc != -EACCES)
1953 CERROR("md_setattr_async fails: rc = %d\n", rc);
1957 inode->i_flags = ll_ext_to_inode_flags(flags |
1958 MDS_BFLAG_EXT_FLAGS);
1968 int ll_flush_ctx(struct inode *inode)
1970 struct ll_sb_info *sbi = ll_i2sbi(inode);
1972 CDEBUG(D_SEC, "flush context for user %d\n", current->uid);
1974 obd_set_info_async(sbi->ll_md_exp,
1975 sizeof(KEY_FLUSH_CTX) - 1, KEY_FLUSH_CTX,
1977 obd_set_info_async(sbi->ll_dt_exp,
1978 sizeof(KEY_FLUSH_CTX) - 1, KEY_FLUSH_CTX,
1983 /* umount -f client means force down, don't save state */
1984 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1985 void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
1987 struct super_block *sb = vfsmnt->mnt_sb;
1989 void ll_umount_begin(struct super_block *sb)
1992 struct lustre_sb_info *lsi = s2lsi(sb);
1993 struct ll_sb_info *sbi = ll_s2sbi(sb);
1994 struct obd_device *obd;
1995 struct obd_ioctl_data ioc_data = { 0 };
1998 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1999 if (!(flags & MNT_FORCE)) {
2005 /* Tell the MGC we got umount -f */
2006 lsi->lsi_flags |= LSI_UMOUNT_FORCE;
2008 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2009 sb->s_count, atomic_read(&sb->s_active));
2011 obd = class_exp2obd(sbi->ll_md_exp);
2013 CERROR("Invalid MDC connection handle "LPX64"\n",
2014 sbi->ll_md_exp->exp_handle.h_cookie);
2019 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp, sizeof ioc_data,
2022 obd = class_exp2obd(sbi->ll_dt_exp);
2024 CERROR("Invalid LOV connection handle "LPX64"\n",
2025 sbi->ll_dt_exp->exp_handle.h_cookie);
2031 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp, sizeof ioc_data,
2034 /* Really, we'd like to wait until there are no requests outstanding,
2035 * and then continue. For now, we just invalidate the requests,
2036 * schedule, and hope.
2043 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2045 struct ll_sb_info *sbi = ll_s2sbi(sb);
2049 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2050 read_only = *flags & MS_RDONLY;
2051 err = obd_set_info_async(sbi->ll_md_exp,
2052 sizeof(KEY_READ_ONLY) - 1,
2053 KEY_READ_ONLY, sizeof(read_only),
2056 CERROR("Failed to change the read-only flag during "
2057 "remount: %d\n", err);
2062 sb->s_flags |= MS_RDONLY;
2064 sb->s_flags &= ~MS_RDONLY;
2069 int ll_prep_inode(struct inode **inode,
2070 struct ptlrpc_request *req,
2071 struct super_block *sb)
2073 struct ll_sb_info *sbi = NULL;
2074 struct lustre_md md;
2078 LASSERT(*inode || sb);
2079 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2080 prune_deathrow(sbi, 1);
2081 memset(&md, 0, sizeof(struct lustre_md));
2083 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2084 sbi->ll_md_exp, &md);
2089 ll_update_inode(*inode, &md);
2091 LASSERT(sb != NULL);
2094 * At this point server returns to client's same fid as client
2095 * generated for creating. So using ->fid1 is okay here.
2097 LASSERT(fid_is_sane(&md.body->fid1));
2099 *inode = ll_iget(sb, ll_fid_build_ino(sbi, &md.body->fid1), &md);
2100 if (*inode == NULL || is_bad_inode(*inode)) {
2102 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2103 #ifdef CONFIG_FS_POSIX_ACL
2105 posix_acl_release(md.posix_acl);
2106 md.posix_acl = NULL;
2110 CERROR("new_inode -fatal: rc %d\n", rc);
2115 rc = obd_checkmd(sbi->ll_dt_exp, sbi->ll_md_exp,
2116 ll_i2info(*inode)->lli_smd);
2118 md_free_lustre_md(sbi->ll_md_exp, &md);
2122 char *llap_origins[] = {
2123 [LLAP_ORIGIN_UNKNOWN] = "--",
2124 [LLAP_ORIGIN_READPAGE] = "rp",
2125 [LLAP_ORIGIN_READAHEAD] = "ra",
2126 [LLAP_ORIGIN_COMMIT_WRITE] = "cw",
2127 [LLAP_ORIGIN_WRITEPAGE] = "wp",
2128 [LLAP_ORIGIN_LOCKLESS_IO] = "ls"
2131 struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi,
2132 struct list_head *list)
2134 struct ll_async_page *llap;
2135 struct list_head *pos;
2137 list_for_each(pos, list) {
2138 if (pos == &sbi->ll_pglist)
2140 llap = list_entry(pos, struct ll_async_page, llap_pglist_item);
2141 if (llap->llap_page == NULL)
2149 int ll_obd_statfs(struct inode *inode, void *arg)
2151 struct ll_sb_info *sbi = NULL;
2152 struct obd_export *exp;
2154 struct obd_ioctl_data *data = NULL;
2158 if (!inode || !(sbi = ll_i2sbi(inode)))
2159 GOTO(out_statfs, rc = -EINVAL);
2161 rc = obd_ioctl_getdata(&buf, &len, arg);
2163 GOTO(out_statfs, rc);
2166 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2167 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2168 GOTO(out_statfs, rc = -EINVAL);
2170 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2171 if (type == LL_STATFS_MDC)
2172 exp = sbi->ll_md_exp;
2173 else if (type == LL_STATFS_LOV)
2174 exp = sbi->ll_dt_exp;
2176 GOTO(out_statfs, rc = -ENODEV);
2178 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2180 GOTO(out_statfs, rc);
2183 obd_ioctl_freedata(buf, len);
2187 int ll_process_config(struct lustre_cfg *lcfg)
2191 struct lprocfs_static_vars lvars;
2195 lprocfs_llite_init_vars(&lvars);
2197 /* The instance name contains the sb: lustre-client-aacfe000 */
2198 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2199 if (!ptr || !*(++ptr))
2201 if (sscanf(ptr, "%lx", &x) != 1)
2204 /* This better be a real Lustre superblock! */
2205 LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2207 /* Note we have not called client_common_fill_super yet, so
2208 proc fns must be able to handle that! */
2209 rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
2214 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2215 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2216 struct inode *i1, struct inode *i2,
2217 const char *name, int namelen,
2218 int mode, __u32 opc, void *data)
2220 LASSERT(i1 != NULL);
2222 if (namelen > ll_i2sbi(i1)->ll_namelen)
2223 return ERR_PTR(-ENAMETOOLONG);
2225 if (op_data == NULL)
2226 OBD_ALLOC_PTR(op_data);
2228 if (op_data == NULL)
2229 return ERR_PTR(-ENOMEM);
2231 ll_i2gids(op_data->op_suppgids, i1, i2);
2232 op_data->op_fid1 = *ll_inode2fid(i1);
2233 op_data->op_capa1 = ll_mdscapa_get(i1);
2236 op_data->op_fid2 = *ll_inode2fid(i2);
2237 op_data->op_capa2 = ll_mdscapa_get(i2);
2239 fid_zero(&op_data->op_fid2);
2242 op_data->op_name = name;
2243 op_data->op_namelen = namelen;
2244 op_data->op_mode = mode;
2245 op_data->op_mod_time = cfs_time_current_sec();
2246 op_data->op_fsuid = current->fsuid;
2247 op_data->op_fsgid = current->fsgid;
2248 op_data->op_cap = current->cap_effective;
2249 op_data->op_bias = MDS_CHECK_SPLIT;
2250 op_data->op_opc = opc;
2251 op_data->op_mds = 0;
2252 op_data->op_data = data;
2257 void ll_finish_md_op_data(struct md_op_data *op_data)
2259 capa_put(op_data->op_capa1);
2260 capa_put(op_data->op_capa2);
2261 OBD_FREE_PTR(op_data);