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 "llite_internal.h"
40 cfs_mem_cache_t *ll_file_data_slab;
42 LIST_HEAD(ll_super_blocks);
43 spinlock_t ll_sb_lock = SPIN_LOCK_UNLOCKED;
45 extern struct address_space_operations ll_aops;
46 extern struct address_space_operations ll_dir_aops;
49 #define log2(n) ffz(~(n))
53 static struct ll_sb_info *ll_init_sbi(void)
55 struct ll_sb_info *sbi = NULL;
60 OBD_ALLOC(sbi, sizeof(*sbi));
64 spin_lock_init(&sbi->ll_lock);
65 spin_lock_init(&sbi->ll_lco.lco_lock);
66 spin_lock_init(&sbi->ll_pp_extent_lock);
67 spin_lock_init(&sbi->ll_process_lock);
68 sbi->ll_rw_stats_on = 0;
69 INIT_LIST_HEAD(&sbi->ll_pglist);
70 if (num_physpages >> (20 - CFS_PAGE_SHIFT) < 512)
71 sbi->ll_async_page_max = num_physpages / 2;
73 sbi->ll_async_page_max = (num_physpages / 4) * 3;
74 sbi->ll_ra_info.ra_max_pages = min(num_physpages / 8,
75 SBI_DEFAULT_READAHEAD_MAX);
76 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
77 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
79 INIT_LIST_HEAD(&sbi->ll_conn_chain);
80 INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
82 ll_generate_random_uuid(uuid);
83 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
84 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
86 spin_lock(&ll_sb_lock);
87 list_add_tail(&sbi->ll_list, &ll_super_blocks);
88 spin_unlock(&ll_sb_lock);
90 #ifdef ENABLE_LLITE_CHECKSUM
91 sbi->ll_flags |= LL_SBI_CHECKSUM;
94 #ifdef HAVE_LRU_RESIZE_SUPPORT
95 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
98 #ifdef HAVE_EXPORT___IGET
99 INIT_LIST_HEAD(&sbi->ll_deathrow);
100 spin_lock_init(&sbi->ll_deathrow_lock);
102 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
103 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_r_hist.oh_lock);
104 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_w_hist.oh_lock);
110 void ll_free_sbi(struct super_block *sb)
112 struct ll_sb_info *sbi = ll_s2sbi(sb);
116 spin_lock(&ll_sb_lock);
117 list_del(&sbi->ll_list);
118 spin_unlock(&ll_sb_lock);
119 OBD_FREE(sbi, sizeof(*sbi));
124 static struct dentry_operations ll_d_root_ops = {
125 #ifdef DCACHE_LUSTRE_INVALID
126 .d_compare = ll_dcompare,
130 /* Initialize the default and maximum LOV EA and cookie sizes. This allows
131 * us to make MDS RPCs with large enough reply buffers to hold the
132 * maximum-sized (= maximum striped) EA and cookie without having to
133 * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
134 static int ll_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
136 struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC };
137 __u32 valsize = sizeof(struct lov_desc);
138 int rc, easize, def_easize, cookiesize;
139 struct lov_desc desc;
143 rc = obd_get_info(dt_exp, strlen(KEY_LOVDESC) + 1, KEY_LOVDESC,
148 stripes = min(desc.ld_tgt_count, (__u32)LOV_MAX_STRIPE_COUNT);
149 lsm.lsm_stripe_count = stripes;
150 easize = obd_size_diskmd(dt_exp, &lsm);
152 lsm.lsm_stripe_count = desc.ld_default_stripe_count;
153 def_easize = obd_size_diskmd(dt_exp, &lsm);
155 cookiesize = stripes * sizeof(struct llog_cookie);
157 CDEBUG(D_HA, "updating max_mdsize/max_cookiesize: %d/%d\n",
160 rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize);
164 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
165 uid_t nllu, gid_t nllg)
167 struct inode *root = 0;
168 struct ll_sb_info *sbi = ll_s2sbi(sb);
169 struct obd_device *obd;
170 struct lu_fid rootfid;
171 struct obd_capa *oc = NULL;
172 struct obd_statfs osfs;
173 struct ptlrpc_request *request = NULL;
174 struct lustre_handle dt_conn = {0, };
175 struct lustre_handle md_conn = {0, };
176 struct obd_connect_data *data = NULL;
177 struct lustre_md lmd;
179 int size, err, checksum;
182 obd = class_name2obd(md);
184 CERROR("MD %s: not setup or attached\n", md);
192 if (proc_lustre_fs_root) {
193 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
196 CERROR("could not register mount in /proc/lustre");
199 /* indicate the features supported by this client */
200 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
202 OBD_CONNECT_ATTRFID | OBD_CONNECT_VERSION |
203 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
204 OBD_CONNECT_CANCELSET;
205 #ifdef HAVE_LRU_RESIZE_SUPPORT
206 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
207 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
209 #ifdef CONFIG_FS_POSIX_ACL
210 data->ocd_connect_flags |= OBD_CONNECT_ACL;
212 data->ocd_ibits_known = MDS_INODELOCK_FULL;
213 data->ocd_version = LUSTRE_VERSION_CODE;
215 if (sb->s_flags & MS_RDONLY)
216 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
217 if (sbi->ll_flags & LL_SBI_USER_XATTR)
218 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
220 #ifdef HAVE_MS_FLOCK_LOCK
221 /* force vfs to use lustre handler for flock() calls - bug 10743 */
222 sb->s_flags |= MS_FLOCK_LOCK;
225 if (sbi->ll_flags & LL_SBI_FLOCK)
226 sbi->ll_fop = &ll_file_operations_flock;
227 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
228 sbi->ll_fop = &ll_file_operations;
230 sbi->ll_fop = &ll_file_operations_noflock;
233 data->ocd_connect_flags |= OBD_CONNECT_REAL;
234 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
235 data->ocd_connect_flags &= ~OBD_CONNECT_LCL_CLIENT;
236 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT;
238 data->ocd_connect_flags &= ~OBD_CONNECT_RMT_CLIENT;
239 data->ocd_connect_flags |= OBD_CONNECT_LCL_CLIENT;
241 data->ocd_nllu = nllu;
242 data->ocd_nllg = nllg;
244 err = obd_connect(NULL, &md_conn, obd, &sbi->ll_sb_uuid, data);
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);
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;
370 if (sbi->ll_flags & LL_SBI_OSS_CAPA)
371 data->ocd_connect_flags |= OBD_CONNECT_OSS_CAPA;
373 #ifdef HAVE_LRU_RESIZE_SUPPORT
374 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
376 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
377 "ocd_grant: %d\n", data->ocd_connect_flags,
378 data->ocd_version, data->ocd_grant);
380 obd->obd_upcall.onu_owner = &sbi->ll_lco;
381 obd->obd_upcall.onu_upcall = ll_ocd_update;
382 data->ocd_brw_size = PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT;
384 err = obd_connect(NULL, &dt_conn, obd, &sbi->ll_sb_uuid, data);
386 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
387 "recovery, of which this client is not a "
388 "part. Please wait for recovery to "
389 "complete, abort, or time out.\n", dt);
390 GOTO(out_md_fid, err);
392 CERROR("Cannot connect to %s: rc = %d\n", dt, err);
393 GOTO(out_md_fid, err);
396 sbi->ll_dt_exp = class_conn2export(&dt_conn);
398 err = obd_fid_init(sbi->ll_dt_exp);
400 CERROR("Can't init data layer FID infrastructure, "
405 spin_lock(&sbi->ll_lco.lco_lock);
406 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
407 spin_unlock(&sbi->ll_lco.lco_lock);
409 ll_init_ea_size(sbi->ll_md_exp, sbi->ll_dt_exp);
411 err = obd_prep_async_page(sbi->ll_dt_exp, NULL, NULL, NULL,
412 0, NULL, NULL, NULL);
414 LCONSOLE_ERROR_MSG(0x151, "There are no OST's in this "
415 "filesystem. There must be at least one "
416 "active OST for a client to start.\n");
417 GOTO(out_dt_fid, err);
420 if (!ll_async_page_slab) {
421 ll_async_page_slab_size =
422 size_round(sizeof(struct ll_async_page)) + err;
423 ll_async_page_slab = cfs_mem_cache_create("ll_async_page",
424 ll_async_page_slab_size,
426 if (!ll_async_page_slab)
427 GOTO(out_dt_fid, err = -ENOMEM);
430 err = md_getstatus(sbi->ll_md_exp, &rootfid, &oc);
432 CERROR("cannot mds_connect: rc = %d\n", err);
433 GOTO(out_dt_fid, err);
435 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&rootfid));
436 sbi->ll_root_fid = rootfid;
438 sb->s_op = &lustre_super_operations;
439 sb->s_export_op = &lustre_export_operations;
442 * XXX: move this to after cbd setup? */
443 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
444 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
445 valid |= OBD_MD_FLRMTPERM;
446 else if (sbi->ll_flags & LL_SBI_ACL)
447 valid |= OBD_MD_FLACL;
449 err = md_getattr(sbi->ll_md_exp, &rootfid, oc, valid, 0, &request);
453 CERROR("md_getattr failed for root: rc = %d\n", err);
454 GOTO(out_dt_fid, err);
456 memset(&lmd, 0, sizeof(lmd));
457 err = md_get_lustre_md(sbi->ll_md_exp, request,
458 REPLY_REC_OFF, sbi->ll_dt_exp, sbi->ll_md_exp,
461 CERROR("failed to understand root inode md: rc = %d\n", err);
462 ptlrpc_req_finished (request);
463 GOTO(out_dt_fid, err);
466 LASSERT(fid_is_sane(&sbi->ll_root_fid));
467 root = ll_iget(sb, ll_fid_build_ino(sbi, &sbi->ll_root_fid), &lmd);
468 md_free_lustre_md(sbi->ll_md_exp, &lmd);
469 ptlrpc_req_finished(request);
471 if (root == NULL || is_bad_inode(root)) {
473 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
474 #ifdef CONFIG_FS_POSIX_ACL
476 posix_acl_release(lmd.posix_acl);
477 lmd.posix_acl = NULL;
480 CERROR("lustre_lite: bad iget4 for root\n");
481 GOTO(out_root, err = -EBADF);
484 err = ll_close_thread_start(&sbi->ll_lcq);
486 CERROR("cannot start close thread: rc %d\n", err);
490 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
491 err = obd_set_info_async(sbi->ll_dt_exp, strlen("checksum"),"checksum",
492 sizeof(checksum), &checksum, NULL);
494 sb->s_root = d_alloc_root(root);
496 OBD_FREE(data, sizeof(*data));
497 sb->s_root->d_op = &ll_d_root_ops;
503 obd_fid_fini(sbi->ll_dt_exp);
505 obd_disconnect(sbi->ll_dt_exp);
506 sbi->ll_dt_exp = NULL;
508 obd_fid_fini(sbi->ll_md_exp);
510 obd_disconnect(sbi->ll_md_exp);
511 sbi->ll_md_exp = NULL;
515 lprocfs_unregister_mountpoint(sbi);
519 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
523 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
525 rc = obd_get_info(sbi->ll_md_exp, strlen("max_easize"), "max_easize",
528 CERROR("Get max mdsize error rc %d \n", rc);
533 void ll_dump_inode(struct inode *inode)
535 struct list_head *tmp;
536 int dentry_count = 0;
538 LASSERT(inode != NULL);
540 list_for_each(tmp, &inode->i_dentry)
543 CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
544 inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
545 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
548 void lustre_dump_dentry(struct dentry *dentry, int recur)
550 struct list_head *tmp;
553 LASSERT(dentry != NULL);
555 list_for_each(tmp, &dentry->d_subdirs)
558 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
559 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
560 dentry->d_name.len, dentry->d_name.name,
561 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
562 dentry->d_parent, dentry->d_inode, atomic_read(&dentry->d_count),
563 dentry->d_flags, dentry->d_fsdata, subdirs);
564 if (dentry->d_inode != NULL)
565 ll_dump_inode(dentry->d_inode);
570 list_for_each(tmp, &dentry->d_subdirs) {
571 struct dentry *d = list_entry(tmp, struct dentry, d_child);
572 lustre_dump_dentry(d, recur - 1);
576 #ifdef HAVE_EXPORT___IGET
577 static void prune_dir_dentries(struct inode *inode)
579 struct dentry *dentry, *prev = NULL;
581 /* due to lustre specific logic, a directory
582 * can have few dentries - a bug from VFS POV */
584 spin_lock(&dcache_lock);
585 if (!list_empty(&inode->i_dentry)) {
586 dentry = list_entry(inode->i_dentry.prev,
587 struct dentry, d_alias);
588 /* in order to prevent infinite loops we
589 * break if previous dentry is busy */
590 if (dentry != prev) {
593 spin_unlock(&dcache_lock);
595 /* try to kill all child dentries */
597 shrink_dcache_parent(dentry);
598 unlock_dentry(dentry);
601 /* now try to get rid of current dentry */
602 d_prune_aliases(inode);
606 spin_unlock(&dcache_lock);
609 static void prune_deathrow_one(struct ll_inode_info *lli)
611 struct inode *inode = ll_info2i(lli);
613 /* first, try to drop any dentries - they hold a ref on the inode */
614 if (S_ISDIR(inode->i_mode))
615 prune_dir_dentries(inode);
617 d_prune_aliases(inode);
620 /* if somebody still uses it, leave it */
621 LASSERT(atomic_read(&inode->i_count) > 0);
622 if (atomic_read(&inode->i_count) > 1)
625 CDEBUG(D_INODE, "inode %lu/%u(%d) looks a good candidate for prune\n",
626 inode->i_ino,inode->i_generation, atomic_read(&inode->i_count));
628 /* seems nobody uses it anymore */
636 static void prune_deathrow(struct ll_sb_info *sbi, int try)
638 struct ll_inode_info *lli;
642 if (need_resched() && try)
646 if (!spin_trylock(&sbi->ll_deathrow_lock))
649 spin_lock(&sbi->ll_deathrow_lock);
654 if (!list_empty(&sbi->ll_deathrow)) {
655 lli = list_entry(sbi->ll_deathrow.next,
656 struct ll_inode_info,
658 list_del_init(&lli->lli_dead_list);
659 if (!list_empty(&sbi->ll_deathrow))
662 spin_unlock(&sbi->ll_deathrow_lock);
665 prune_deathrow_one(lli);
667 } while (empty == 0);
669 #else /* !HAVE_EXPORT___IGET */
670 #define prune_deathrow(sbi, try) do {} while (0)
671 #endif /* HAVE_EXPORT___IGET */
673 void client_common_put_super(struct super_block *sb)
675 struct ll_sb_info *sbi = ll_s2sbi(sb);
678 obd_cancel_unused(sbi->ll_dt_exp, NULL, 0, NULL);
680 ll_close_thread_shutdown(sbi->ll_lcq);
682 /* destroy inodes in deathrow */
683 prune_deathrow(sbi, 0);
685 list_del(&sbi->ll_conn_chain);
687 obd_fid_fini(sbi->ll_dt_exp);
688 obd_disconnect(sbi->ll_dt_exp);
689 sbi->ll_dt_exp = NULL;
691 lprocfs_unregister_mountpoint(sbi);
693 obd_fid_fini(sbi->ll_md_exp);
694 obd_disconnect(sbi->ll_md_exp);
695 sbi->ll_md_exp = NULL;
700 void ll_kill_super(struct super_block *sb)
702 struct ll_sb_info *sbi;
707 if (!(sb->s_flags & MS_ACTIVE))
711 /* we need restore s_dev from changed for clustred NFS before put_super
712 * because new kernels have cached s_dev and change sb->s_dev in
713 * put_super not affected real removing devices */
715 sb->s_dev = sbi->ll_sdev_orig;
719 char *ll_read_opt(const char *opt, char *data)
725 CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
726 if (strncmp(opt, data, strlen(opt)))
728 if ((value = strchr(data, '=')) == NULL)
732 OBD_ALLOC(retval, strlen(value) + 1);
734 CERROR("out of memory!\n");
738 memcpy(retval, value, strlen(value)+1);
739 CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
743 static inline int ll_set_opt(const char *opt, char *data, int fl)
745 if (strncmp(opt, data, strlen(opt)) != 0)
751 /* non-client-specific mount options are parsed in lmd_parse */
752 static int ll_options(char *options, int *flags)
755 char *s1 = options, *s2;
761 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
764 CDEBUG(D_SUPER, "next opt=%s\n", s1);
765 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
770 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
775 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
780 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
785 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
790 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
795 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
797 /* Ignore deprecated mount option. The client will
798 * always try to mount with ACL support, whether this
799 * is used depends on whether server supports it. */
802 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
806 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
812 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
817 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
822 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
827 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
833 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
839 s2 = strchr(s1, ',');
847 void ll_lli_init(struct ll_inode_info *lli)
849 lli->lli_inode_magic = LLI_INODE_MAGIC;
850 sema_init(&lli->lli_size_sem, 1);
851 sema_init(&lli->lli_write_sem, 1);
853 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
854 spin_lock_init(&lli->lli_lock);
855 INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
856 INIT_LIST_HEAD(&lli->lli_close_list);
857 lli->lli_inode_magic = LLI_INODE_MAGIC;
858 sema_init(&lli->lli_och_sem, 1);
859 lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
860 lli->lli_mds_exec_och = NULL;
861 lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
862 lli->lli_open_fd_exec_count = 0;
863 INIT_LIST_HEAD(&lli->lli_dead_list);
864 lli->lli_remote_perms = NULL;
865 lli->lli_rmtperm_utime = 0;
866 sema_init(&lli->lli_rmtperm_sem, 1);
867 INIT_LIST_HEAD(&lli->lli_oss_capas);
870 int ll_fill_super(struct super_block *sb)
872 struct lustre_profile *lprof;
873 struct lustre_sb_info *lsi = s2lsi(sb);
874 struct ll_sb_info *sbi;
875 char *dt = NULL, *md = NULL;
876 char *profilenm = get_profile_name(sb);
877 struct config_llog_instance cfg = {0, };
878 char ll_instance[sizeof(sb) * 2 + 1];
882 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
886 sb->s_type->fs_flags |= FS_ODD_RENAME;
887 /* client additional sb info */
888 lsi->lsi_llsbi = sbi = ll_init_sbi();
894 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
898 /* Generate a string unique to this super, in case some joker tries
899 to mount the same fs at two mount points.
900 Use the address of the super itself.*/
901 sprintf(ll_instance, "%p", sb);
902 cfg.cfg_instance = ll_instance;
903 cfg.cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
905 /* set up client obds */
906 err = lustre_process_log(sb, profilenm, &cfg);
908 CERROR("Unable to process log: %d\n", err);
912 lprof = class_get_profile(profilenm);
914 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
915 " read from the MGS. Does that filesystem "
916 "exist?\n", profilenm);
917 GOTO(out_free, err = -EINVAL);
919 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
920 lprof->lp_md, lprof->lp_dt);
922 OBD_ALLOC(dt, strlen(lprof->lp_dt) +
923 strlen(ll_instance) + 2);
925 GOTO(out_free, err = -ENOMEM);
926 sprintf(dt, "%s-%s", lprof->lp_dt, ll_instance);
928 OBD_ALLOC(md, strlen(lprof->lp_md) +
929 strlen(ll_instance) + 2);
931 GOTO(out_free, err = -ENOMEM);
932 sprintf(md, "%s-%s", lprof->lp_md, ll_instance);
934 /* connections, registrations, sb setup */
935 err = client_common_fill_super(sb, md, dt,
936 lsi->lsi_lmd->lmd_nllu,
937 lsi->lsi_lmd->lmd_nllg);
941 OBD_FREE(md, strlen(md) + 1);
943 OBD_FREE(dt, strlen(dt) + 1);
947 LCONSOLE_WARN("Client %s has started\n", profilenm);
950 } /* ll_fill_super */
953 void ll_put_super(struct super_block *sb)
955 struct config_llog_instance cfg;
956 char ll_instance[sizeof(sb) * 2 + 1];
957 struct obd_device *obd;
958 struct lustre_sb_info *lsi = s2lsi(sb);
959 struct ll_sb_info *sbi = ll_s2sbi(sb);
960 char *profilenm = get_profile_name(sb);
964 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
966 ll_print_capa_stat(sbi);
968 sprintf(ll_instance, "%p", sb);
969 cfg.cfg_instance = ll_instance;
970 lustre_end_log(sb, NULL, &cfg);
972 if (sbi->ll_md_exp) {
973 obd = class_exp2obd(sbi->ll_md_exp);
975 force = obd->obd_force;
978 /* We need to set force before the lov_disconnect in
979 lustre_common_put_super, since l_d cleans up osc's as well. */
982 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
984 obd->obd_force = force;
989 /* Only if client_common_fill_super succeeded */
990 client_common_put_super(sb);
993 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
994 class_manual_cleanup(obd);
998 class_del_profile(profilenm);
1001 lsi->lsi_llsbi = NULL;
1003 lustre_common_put_super(sb);
1005 LCONSOLE_WARN("client %s umount complete\n", ll_instance);
1010 } /* client_put_super */
1012 #ifdef HAVE_REGISTER_CACHE
1013 #include <linux/cache_def.h>
1014 #ifdef HAVE_CACHE_RETURN_INT
1019 ll_shrink_cache(int priority, unsigned int gfp_mask)
1021 struct ll_sb_info *sbi;
1024 list_for_each_entry(sbi, &ll_super_blocks, ll_list)
1025 count += llap_shrink_cache(sbi, priority);
1027 #ifdef HAVE_CACHE_RETURN_INT
1032 struct cache_definition ll_cache_definition = {
1033 .name = "llap_cache",
1034 .shrink = ll_shrink_cache
1036 #endif /* HAVE_REGISTER_CACHE */
1038 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
1040 struct inode *inode = NULL;
1041 /* NOTE: we depend on atomic igrab() -bzzz */
1042 lock_res_and_lock(lock);
1043 if (lock->l_ast_data) {
1044 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
1045 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1046 inode = igrab(lock->l_ast_data);
1048 inode = lock->l_ast_data;
1049 ldlm_lock_debug(NULL, inode->i_state & I_FREEING ?
1051 lock, __FILE__, __func__, __LINE__,
1052 "l_ast_data %p is bogus: magic %08x",
1053 lock->l_ast_data, lli->lli_inode_magic);
1057 unlock_res_and_lock(lock);
1061 static int null_if_equal(struct ldlm_lock *lock, void *data)
1063 if (data == lock->l_ast_data) {
1064 lock->l_ast_data = NULL;
1066 if (lock->l_req_mode != lock->l_granted_mode)
1067 LDLM_ERROR(lock,"clearing inode with ungranted lock");
1070 return LDLM_ITER_CONTINUE;
1073 void ll_clear_inode(struct inode *inode)
1075 struct ll_inode_info *lli = ll_i2info(inode);
1076 struct ll_sb_info *sbi = ll_i2sbi(inode);
1079 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1080 inode->i_generation, inode);
1082 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1083 md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
1084 null_if_equal, inode);
1086 LASSERT(!lli->lli_open_fd_write_count);
1087 LASSERT(!lli->lli_open_fd_read_count);
1088 LASSERT(!lli->lli_open_fd_exec_count);
1090 if (lli->lli_mds_write_och)
1091 ll_md_real_close(inode, FMODE_WRITE);
1092 if (lli->lli_mds_exec_och)
1093 ll_md_real_close(inode, FMODE_EXEC);
1094 if (lli->lli_mds_read_och)
1095 ll_md_real_close(inode, FMODE_READ);
1098 obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
1099 null_if_equal, inode);
1101 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1102 lli->lli_smd = NULL;
1105 if (lli->lli_symlink_name) {
1106 OBD_FREE(lli->lli_symlink_name,
1107 strlen(lli->lli_symlink_name) + 1);
1108 lli->lli_symlink_name = NULL;
1111 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1112 LASSERT(lli->lli_posix_acl == NULL);
1113 if (lli->lli_remote_perms) {
1114 free_rmtperm_hash(lli->lli_remote_perms);
1115 lli->lli_remote_perms = NULL;
1118 #ifdef CONFIG_FS_POSIX_ACL
1119 else if (lli->lli_posix_acl) {
1120 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1121 LASSERT(lli->lli_remote_perms == NULL);
1122 posix_acl_release(lli->lli_posix_acl);
1123 lli->lli_posix_acl = NULL;
1126 lli->lli_inode_magic = LLI_INODE_DEAD;
1128 #ifdef HAVE_EXPORT___IGET
1129 spin_lock(&sbi->ll_deathrow_lock);
1130 list_del_init(&lli->lli_dead_list);
1131 spin_unlock(&sbi->ll_deathrow_lock);
1133 ll_clear_inode_capas(inode);
1138 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
1139 struct md_open_data **mod)
1141 struct lustre_md md;
1142 struct ll_sb_info *sbi = ll_i2sbi(inode);
1143 struct ptlrpc_request *request = NULL;
1147 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1148 LUSTRE_OPC_ANY, NULL);
1149 if (IS_ERR(op_data))
1150 RETURN(PTR_ERR(op_data));
1152 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1155 ptlrpc_req_finished(request);
1156 if (rc == -ENOENT) {
1158 /* Unlinked special device node? Or just a race?
1159 * Pretend we done everything. */
1160 if (!S_ISREG(inode->i_mode) &&
1161 !S_ISDIR(inode->i_mode))
1162 rc = inode_setattr(inode, &op_data->op_attr);
1163 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1164 CERROR("md_setattr fails: rc = %d\n", rc);
1169 rc = md_get_lustre_md(sbi->ll_md_exp, request, REPLY_REC_OFF,
1170 sbi->ll_dt_exp, sbi->ll_md_exp, &md);
1172 ptlrpc_req_finished(request);
1176 /* We call inode_setattr to adjust timestamps.
1177 * If there is at least some data in file, we cleared ATTR_SIZE
1178 * above to avoid invoking vmtruncate, otherwise it is important
1179 * to call vmtruncate in inode_setattr to update inode->i_size
1181 rc = inode_setattr(inode, &op_data->op_attr);
1183 /* Extract epoch data if obtained. */
1184 op_data->op_handle = md.body->handle;
1185 op_data->op_ioepoch = md.body->ioepoch;
1187 ll_update_inode(inode, &md);
1188 ptlrpc_req_finished(request);
1193 /* Close IO epoch and send Size-on-MDS attribute update. */
1194 static int ll_setattr_done_writing(struct inode *inode,
1195 struct md_op_data *op_data,
1196 struct md_open_data *mod)
1198 struct ll_inode_info *lli = ll_i2info(inode);
1202 LASSERT(op_data != NULL);
1203 if (!S_ISREG(inode->i_mode))
1206 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1207 op_data->op_ioepoch, PFID(&lli->lli_fid));
1209 op_data->op_flags = MF_EPOCH_CLOSE | MF_SOM_CHANGE;
1210 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1211 if (rc == -EAGAIN) {
1212 /* MDS has instructed us to obtain Size-on-MDS attribute
1213 * from OSTs and send setattr to back to MDS. */
1214 rc = ll_sizeonmds_update(inode, mod, &op_data->op_handle,
1215 op_data->op_ioepoch);
1217 CERROR("inode %lu mdc truncate failed: rc = %d\n",
1223 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1224 * object(s) determine the file size and mtime. Otherwise, the MDS will
1225 * keep these values until such a time that objects are allocated for it.
1226 * We do the MDS operations first, as it is checking permissions for us.
1227 * We don't to the MDS RPC if there is nothing that we want to store there,
1228 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1229 * going to do an RPC anyways.
1231 * If we are doing a truncate, we will send the mtime and ctime updates
1232 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1233 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1236 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1238 struct ll_inode_info *lli = ll_i2info(inode);
1239 struct lov_stripe_md *lsm = lli->lli_smd;
1240 struct ll_sb_info *sbi = ll_i2sbi(inode);
1241 struct md_op_data *op_data = NULL;
1242 struct md_open_data *mod = NULL;
1243 int ia_valid = attr->ia_valid;
1244 int rc = 0, rc1 = 0;
1247 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
1249 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETATTR, 1);
1251 if (ia_valid & ATTR_SIZE) {
1252 if (attr->ia_size > ll_file_maxbytes(inode)) {
1253 CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1254 attr->ia_size, ll_file_maxbytes(inode));
1258 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1261 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1262 if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1263 if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
1267 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1268 if (attr->ia_valid & ATTR_CTIME) {
1269 attr->ia_ctime = CURRENT_TIME;
1270 attr->ia_valid |= ATTR_CTIME_SET;
1272 if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1273 attr->ia_atime = CURRENT_TIME;
1274 attr->ia_valid |= ATTR_ATIME_SET;
1276 if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1277 attr->ia_mtime = CURRENT_TIME;
1278 attr->ia_valid |= ATTR_MTIME_SET;
1280 if ((attr->ia_valid & ATTR_CTIME) && !(attr->ia_valid & ATTR_MTIME)) {
1281 /* To avoid stale mtime on mds, obtain it from ost and send
1283 rc = ll_glimpse_size(inode, 0);
1287 attr->ia_valid |= ATTR_MTIME_SET | ATTR_MTIME;
1288 attr->ia_mtime = inode->i_mtime;
1291 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1292 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1293 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1296 /* NB: ATTR_SIZE will only be set after this point if the size
1297 * resides on the MDS, ie, this file has no objects. */
1299 attr->ia_valid &= ~ATTR_SIZE;
1301 /* We always do an MDS RPC, even if we're only changing the size;
1302 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1304 OBD_ALLOC_PTR(op_data);
1305 if (op_data == NULL)
1308 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1310 /* Open epoch for truncate. */
1311 if (ia_valid & ATTR_SIZE)
1312 op_data->op_flags = MF_EPOCH_OPEN;
1314 rc = ll_md_setattr(inode, op_data, &mod);
1318 if (op_data->op_ioepoch)
1319 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID" for "
1320 "truncate\n", op_data->op_ioepoch, PFID(&lli->lli_fid));
1322 if (!lsm || !S_ISREG(inode->i_mode)) {
1323 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1327 /* We really need to get our PW lock before we change inode->i_size.
1328 * If we don't we can race with other i_size updaters on our node, like
1329 * ll_file_read. We can also race with i_size propogation to other
1330 * nodes through dirtying and writeback of final cached pages. This
1331 * last one is especially bad for racing o_append users on other
1333 if (ia_valid & ATTR_SIZE) {
1334 ldlm_policy_data_t policy = { .l_extent = {attr->ia_size,
1336 struct lustre_handle lockh = { 0 };
1337 int err, ast_flags = 0;
1338 /* XXX when we fix the AST intents to pass the discard-range
1339 * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
1341 if (attr->ia_size == 0)
1342 ast_flags = LDLM_AST_DISCARD_DATA;
1344 UNLOCK_INODE_MUTEX(inode);
1345 UP_WRITE_I_ALLOC_SEM(inode);
1346 rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy, &lockh,
1348 LOCK_INODE_MUTEX(inode);
1349 DOWN_WRITE_I_ALLOC_SEM(inode);
1354 /* Only ll_inode_size_lock is taken at this level.
1355 * lov_stripe_lock() is grabbed by ll_truncate() only over
1356 * call to obd_adjust_kms(). If vmtruncate returns 0, then
1357 * ll_truncate dropped ll_inode_size_lock() */
1358 ll_inode_size_lock(inode, 0);
1359 rc = vmtruncate(inode, attr->ia_size);
1361 LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
1362 ll_inode_size_unlock(inode, 0);
1365 err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
1367 CERROR("ll_extent_unlock failed: %d\n", err);
1371 } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
1373 struct obd_info oinfo = { { { 0 } } };
1376 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
1377 inode->i_ino, LTIME_S(attr->ia_mtime));
1381 oa->o_id = lsm->lsm_object_id;
1382 oa->o_gr = lsm->lsm_object_gr;
1383 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1385 flags = OBD_MD_FLTYPE | OBD_MD_FLATIME |
1386 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
1387 OBD_MD_FLFID | OBD_MD_FLGENER |
1390 obdo_from_inode(oa, inode, flags);
1394 oinfo.oi_capa = ll_mdscapa_get(inode);
1396 /* XXX: this looks unnecessary now. */
1397 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1398 capa_put(oinfo.oi_capa);
1400 CERROR("obd_setattr_async fails: rc=%d\n", rc);
1409 if (op_data->op_ioepoch)
1410 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1411 ll_finish_md_op_data(op_data);
1413 return rc ? rc : rc1;
1416 int ll_setattr(struct dentry *de, struct iattr *attr)
1418 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1419 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1420 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1422 return ll_setattr_raw(de->d_inode, attr);
1425 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1428 struct ll_sb_info *sbi = ll_s2sbi(sb);
1429 struct obd_statfs obd_osfs;
1433 rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age);
1435 CERROR("md_statfs fails: rc = %d\n", rc);
1439 osfs->os_type = sb->s_magic;
1441 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1442 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1444 rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
1445 &obd_osfs, max_age, 0);
1447 CERROR("obd_statfs fails: rc = %d\n", rc);
1451 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1452 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1455 osfs->os_bsize = obd_osfs.os_bsize;
1456 osfs->os_blocks = obd_osfs.os_blocks;
1457 osfs->os_bfree = obd_osfs.os_bfree;
1458 osfs->os_bavail = obd_osfs.os_bavail;
1460 /* If we don't have as many objects free on the OST as inodes
1461 * on the MDS, we reduce the total number of inodes to
1462 * compensate, so that the "inodes in use" number is correct.
1464 if (obd_osfs.os_ffree < osfs->os_ffree) {
1465 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1467 osfs->os_ffree = obd_osfs.os_ffree;
1472 #ifndef HAVE_STATFS_DENTRY_PARAM
1473 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1476 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1478 struct super_block *sb = de->d_sb;
1480 struct obd_statfs osfs;
1483 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1484 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1486 /* For now we will always get up-to-date statfs values, but in the
1487 * future we may allow some amount of caching on the client (e.g.
1488 * from QOS or lprocfs updates). */
1489 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - 1);
1493 statfs_unpack(sfs, &osfs);
1495 /* We need to downshift for all 32-bit kernels, because we can't
1496 * tell if the kernel is being called via sys_statfs64() or not.
1497 * Stop before overflowing f_bsize - in which case it is better
1498 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1499 if (sizeof(long) < 8) {
1500 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1503 osfs.os_blocks >>= 1;
1504 osfs.os_bfree >>= 1;
1505 osfs.os_bavail >>= 1;
1509 sfs->f_blocks = osfs.os_blocks;
1510 sfs->f_bfree = osfs.os_bfree;
1511 sfs->f_bavail = osfs.os_bavail;
1516 void ll_inode_size_lock(struct inode *inode, int lock_lsm)
1518 struct ll_inode_info *lli;
1519 struct lov_stripe_md *lsm;
1521 lli = ll_i2info(inode);
1522 LASSERT(lli->lli_size_sem_owner != current);
1523 down(&lli->lli_size_sem);
1524 LASSERT(lli->lli_size_sem_owner == NULL);
1525 lli->lli_size_sem_owner = current;
1527 LASSERTF(lsm != NULL || lock_lsm == 0, "lsm %p, lock_lsm %d\n",
1530 lov_stripe_lock(lsm);
1533 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
1535 struct ll_inode_info *lli;
1536 struct lov_stripe_md *lsm;
1538 lli = ll_i2info(inode);
1540 LASSERTF(lsm != NULL || unlock_lsm == 0, "lsm %p, lock_lsm %d\n",
1543 lov_stripe_unlock(lsm);
1544 LASSERT(lli->lli_size_sem_owner == current);
1545 lli->lli_size_sem_owner = NULL;
1546 up(&lli->lli_size_sem);
1549 static void ll_replace_lsm(struct inode *inode, struct lov_stripe_md *lsm)
1551 struct ll_inode_info *lli = ll_i2info(inode);
1553 dump_lsm(D_INODE, lsm);
1554 dump_lsm(D_INODE, lli->lli_smd);
1555 LASSERTF(lsm->lsm_magic == LOV_MAGIC_JOIN,
1556 "lsm must be joined lsm %p\n", lsm);
1557 obd_free_memmd(ll_i2dtexp(inode), &lli->lli_smd);
1558 CDEBUG(D_INODE, "replace lsm %p to lli_smd %p for inode %lu%u(%p)\n",
1559 lsm, lli->lli_smd, inode->i_ino, inode->i_generation, inode);
1561 lli->lli_maxbytes = lsm->lsm_maxbytes;
1562 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1563 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1566 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1568 struct ll_inode_info *lli = ll_i2info(inode);
1569 struct mdt_body *body = md->body;
1570 struct lov_stripe_md *lsm = md->lsm;
1571 struct ll_sb_info *sbi = ll_i2sbi(inode);
1573 LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1575 if (lli->lli_smd == NULL) {
1576 if (lsm->lsm_magic != LOV_MAGIC &&
1577 lsm->lsm_magic != LOV_MAGIC_JOIN) {
1578 dump_lsm(D_ERROR, lsm);
1581 CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
1582 lsm, inode->i_ino, inode->i_generation, inode);
1583 /* ll_inode_size_lock() requires it is only called
1584 * with lli_smd != NULL or lock_lsm == 0 or we can
1585 * race between lock/unlock. bug 9547 */
1587 lli->lli_maxbytes = lsm->lsm_maxbytes;
1588 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1589 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1591 if (lli->lli_smd->lsm_magic == lsm->lsm_magic &&
1592 lli->lli_smd->lsm_stripe_count ==
1593 lsm->lsm_stripe_count) {
1594 if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
1595 CERROR("lsm mismatch for inode %ld\n",
1597 CERROR("lli_smd:\n");
1598 dump_lsm(D_ERROR, lli->lli_smd);
1600 dump_lsm(D_ERROR, lsm);
1604 ll_replace_lsm(inode, lsm);
1606 if (lli->lli_smd != lsm)
1607 obd_free_memmd(ll_i2dtexp(inode), &lsm);
1610 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1611 if (body->valid & OBD_MD_FLRMTPERM)
1612 ll_update_remote_perm(inode, md->remote_perm);
1614 #ifdef CONFIG_FS_POSIX_ACL
1615 else if (body->valid & OBD_MD_FLACL) {
1616 spin_lock(&lli->lli_lock);
1617 if (lli->lli_posix_acl)
1618 posix_acl_release(lli->lli_posix_acl);
1619 lli->lli_posix_acl = md->posix_acl;
1620 spin_unlock(&lli->lli_lock);
1623 if (body->valid & OBD_MD_FLATIME &&
1624 body->atime > LTIME_S(inode->i_atime))
1625 LTIME_S(inode->i_atime) = body->atime;
1627 /* mtime is always updated with ctime, but can be set in past.
1628 As write and utime(2) may happen within 1 second, and utime's
1629 mtime has a priority over write's one, so take mtime from mds
1630 for the same ctimes. */
1631 if (body->valid & OBD_MD_FLCTIME &&
1632 body->ctime >= LTIME_S(inode->i_ctime)) {
1633 LTIME_S(inode->i_ctime) = body->ctime;
1634 if (body->valid & OBD_MD_FLMTIME) {
1635 CDEBUG(D_INODE, "setting ino %lu mtime "
1636 "from %lu to "LPU64"\n", inode->i_ino,
1637 LTIME_S(inode->i_mtime), body->mtime);
1638 LTIME_S(inode->i_mtime) = body->mtime;
1641 if (body->valid & OBD_MD_FLMODE)
1642 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
1643 if (body->valid & OBD_MD_FLTYPE)
1644 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
1645 if (S_ISREG(inode->i_mode)) {
1646 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
1648 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1650 #ifdef HAVE_INODE_BLKSIZE
1651 inode->i_blksize = 1<<inode->i_blkbits;
1653 if (body->valid & OBD_MD_FLUID)
1654 inode->i_uid = body->uid;
1655 if (body->valid & OBD_MD_FLGID)
1656 inode->i_gid = body->gid;
1657 if (body->valid & OBD_MD_FLFLAGS)
1658 inode->i_flags = ll_ext_to_inode_flags(body->flags);
1659 if (body->valid & OBD_MD_FLNLINK)
1660 inode->i_nlink = body->nlink;
1661 if (body->valid & OBD_MD_FLRDEV)
1662 inode->i_rdev = old_decode_dev(body->rdev);
1664 if (body->valid & OBD_MD_FLID) {
1665 /* FID shouldn't be changed! */
1666 if (fid_is_sane(&lli->lli_fid)) {
1667 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
1668 "Trying to change FID "DFID
1669 " to the "DFID", inode %lu/%u(%p)\n",
1670 PFID(&lli->lli_fid), PFID(&body->fid1),
1671 inode->i_ino, inode->i_generation, inode);
1673 lli->lli_fid = body->fid1;
1676 LASSERT(fid_seq(&lli->lli_fid) != 0);
1678 if (body->valid & OBD_MD_FLSIZE) {
1679 if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
1680 S_ISREG(inode->i_mode) && lli->lli_smd) {
1681 struct lustre_handle lockh;
1684 /* As it is possible a blocking ast has been processed
1685 * by this time, we need to check there is an UPDATE
1686 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
1688 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
1691 if (lli->lli_flags & (LLIF_DONE_WRITING |
1692 LLIF_EPOCH_PENDING |
1694 CERROR("ino %lu flags %lu still has "
1695 "size authority! do not trust "
1696 "the size got from MDS\n",
1697 inode->i_ino, lli->lli_flags);
1699 /* Use old size assignment to avoid
1700 * deadlock bz14138 & bz14326 */
1701 inode->i_size = body->size;
1702 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
1704 ldlm_lock_decref(&lockh, mode);
1707 /* Use old size assignment to avoid
1708 * deadlock bz14138 & bz14326 */
1709 inode->i_size = body->size;
1712 if (body->valid & OBD_MD_FLBLOCKS)
1713 inode->i_blocks = body->blocks;
1716 if (body->valid & OBD_MD_FLMDSCAPA) {
1717 LASSERT(md->mds_capa);
1718 ll_add_capa(inode, md->mds_capa);
1720 if (body->valid & OBD_MD_FLOSSCAPA) {
1721 LASSERT(md->oss_capa);
1722 ll_add_capa(inode, md->oss_capa);
1726 static struct backing_dev_info ll_backing_dev_info = {
1727 .ra_pages = 0, /* No readahead */
1728 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12))
1729 .capabilities = 0, /* Does contribute to dirty memory */
1731 .memory_backed = 0, /* Does contribute to dirty memory */
1735 void ll_read_inode2(struct inode *inode, void *opaque)
1737 struct lustre_md *md = opaque;
1738 struct ll_inode_info *lli = ll_i2info(inode);
1741 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n",
1742 inode->i_ino, inode->i_generation, inode);
1746 LASSERT(!lli->lli_smd);
1748 /* Core attributes from the MDS first. This is a new inode, and
1749 * the VFS doesn't zero times in the core inode so we have to do
1750 * it ourselves. They will be overwritten by either MDS or OST
1751 * attributes - we just need to make sure they aren't newer. */
1752 LTIME_S(inode->i_mtime) = 0;
1753 LTIME_S(inode->i_atime) = 0;
1754 LTIME_S(inode->i_ctime) = 0;
1756 ll_update_inode(inode, md);
1758 /* OIDEBUG(inode); */
1760 if (S_ISREG(inode->i_mode)) {
1761 struct ll_sb_info *sbi = ll_i2sbi(inode);
1762 inode->i_op = &ll_file_inode_operations;
1763 inode->i_fop = sbi->ll_fop;
1764 inode->i_mapping->a_ops = &ll_aops;
1766 } else if (S_ISDIR(inode->i_mode)) {
1767 inode->i_op = &ll_dir_inode_operations;
1768 inode->i_fop = &ll_dir_operations;
1769 inode->i_mapping->a_ops = &ll_dir_aops;
1771 } else if (S_ISLNK(inode->i_mode)) {
1772 inode->i_op = &ll_fast_symlink_inode_operations;
1775 inode->i_op = &ll_special_inode_operations;
1777 init_special_inode(inode, inode->i_mode,
1778 kdev_t_to_nr(inode->i_rdev));
1780 /* initializing backing dev info. */
1781 inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
1787 void ll_delete_inode(struct inode *inode)
1789 struct ll_sb_info *sbi = ll_i2sbi(inode);
1793 rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
1795 CERROR("fid_delete() failed, rc %d\n", rc);
1802 int ll_iocontrol(struct inode *inode, struct file *file,
1803 unsigned int cmd, unsigned long arg)
1805 struct ll_sb_info *sbi = ll_i2sbi(inode);
1806 struct ptlrpc_request *req = NULL;
1811 case EXT3_IOC_GETFLAGS: {
1812 struct mdt_body *body;
1813 struct obd_capa *oc;
1815 oc = ll_mdscapa_get(inode);
1816 rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
1817 OBD_MD_FLFLAGS, 0, &req);
1820 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1824 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1826 flags = body->flags;
1828 ptlrpc_req_finished (req);
1830 RETURN(put_user(flags, (int *)arg));
1832 case EXT3_IOC_SETFLAGS: {
1833 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1834 struct obd_info oinfo = { { { 0 } } };
1835 struct md_op_data *op_data;
1837 if (get_user(flags, (int *)arg))
1841 OBDO_ALLOC(oinfo.oi_oa);
1845 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
1846 LUSTRE_OPC_ANY, NULL);
1847 if (IS_ERR(op_data))
1848 RETURN(PTR_ERR(op_data));
1850 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
1851 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
1852 rc = md_setattr(sbi->ll_md_exp, op_data,
1853 NULL, 0, NULL, 0, &req, NULL);
1854 ll_finish_md_op_data(op_data);
1855 ptlrpc_req_finished(req);
1856 if (rc || lsm == NULL) {
1857 OBDO_FREE(oinfo.oi_oa);
1861 oinfo.oi_oa->o_id = lsm->lsm_object_id;
1862 oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
1863 oinfo.oi_oa->o_flags = flags;
1864 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
1866 oinfo.oi_capa = ll_mdscapa_get(inode);
1868 obdo_from_inode(oinfo.oi_oa, inode,
1869 OBD_MD_FLFID | OBD_MD_FLGENER);
1870 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1871 capa_put(oinfo.oi_capa);
1872 OBDO_FREE(oinfo.oi_oa);
1874 if (rc != -EPERM && rc != -EACCES)
1875 CERROR("md_setattr_async fails: rc = %d\n", rc);
1879 inode->i_flags = ll_ext_to_inode_flags(flags |
1880 MDS_BFLAG_EXT_FLAGS);
1890 int ll_flush_ctx(struct inode *inode)
1892 struct ll_sb_info *sbi = ll_i2sbi(inode);
1894 CDEBUG(D_SEC, "flush context for user %d\n", current->uid);
1896 obd_set_info_async(sbi->ll_md_exp,
1897 sizeof(KEY_FLUSH_CTX) - 1, KEY_FLUSH_CTX,
1899 obd_set_info_async(sbi->ll_dt_exp,
1900 sizeof(KEY_FLUSH_CTX) - 1, KEY_FLUSH_CTX,
1905 /* umount -f client means force down, don't save state */
1906 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1907 void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
1909 struct super_block *sb = vfsmnt->mnt_sb;
1911 void ll_umount_begin(struct super_block *sb)
1914 struct lustre_sb_info *lsi = s2lsi(sb);
1915 struct ll_sb_info *sbi = ll_s2sbi(sb);
1916 struct obd_device *obd;
1917 struct obd_ioctl_data ioc_data = { 0 };
1920 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1921 if (!(flags & MNT_FORCE)) {
1927 /* Tell the MGC we got umount -f */
1928 lsi->lsi_flags |= LSI_UMOUNT_FORCE;
1930 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
1931 sb->s_count, atomic_read(&sb->s_active));
1933 obd = class_exp2obd(sbi->ll_md_exp);
1935 CERROR("Invalid MDC connection handle "LPX64"\n",
1936 sbi->ll_md_exp->exp_handle.h_cookie);
1941 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp, sizeof ioc_data,
1944 obd = class_exp2obd(sbi->ll_dt_exp);
1946 CERROR("Invalid LOV connection handle "LPX64"\n",
1947 sbi->ll_dt_exp->exp_handle.h_cookie);
1953 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp, sizeof ioc_data,
1956 /* Really, we'd like to wait until there are no requests outstanding,
1957 * and then continue. For now, we just invalidate the requests,
1958 * schedule, and hope.
1965 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
1967 struct ll_sb_info *sbi = ll_s2sbi(sb);
1971 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
1972 read_only = *flags & MS_RDONLY;
1973 err = obd_set_info_async(sbi->ll_md_exp,
1974 sizeof(KEY_READ_ONLY) - 1,
1975 KEY_READ_ONLY, sizeof(read_only),
1978 CERROR("Failed to change the read-only flag during "
1979 "remount: %d\n", err);
1984 sb->s_flags |= MS_RDONLY;
1986 sb->s_flags &= ~MS_RDONLY;
1991 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
1992 int offset, struct super_block *sb)
1994 struct ll_sb_info *sbi = NULL;
1995 struct lustre_md md;
1999 LASSERT(*inode || sb);
2000 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2001 prune_deathrow(sbi, 1);
2002 memset(&md, 0, sizeof(struct lustre_md));
2004 rc = md_get_lustre_md(sbi->ll_md_exp, req, offset,
2005 sbi->ll_dt_exp, sbi->ll_md_exp, &md);
2010 ll_update_inode(*inode, &md);
2012 LASSERT(sb != NULL);
2015 * At this point server returns to client's same fid as client
2016 * generated for creating. So using ->fid1 is okay here.
2018 LASSERT(fid_is_sane(&md.body->fid1));
2020 *inode = ll_iget(sb, ll_fid_build_ino(sbi, &md.body->fid1), &md);
2021 if (*inode == NULL || is_bad_inode(*inode)) {
2023 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2024 #ifdef CONFIG_FS_POSIX_ACL
2026 posix_acl_release(md.posix_acl);
2027 md.posix_acl = NULL;
2031 CERROR("new_inode -fatal: rc %d\n", rc);
2036 rc = obd_checkmd(sbi->ll_dt_exp, sbi->ll_md_exp,
2037 ll_i2info(*inode)->lli_smd);
2039 md_free_lustre_md(sbi->ll_md_exp, &md);
2043 char *llap_origins[] = {
2044 [LLAP_ORIGIN_UNKNOWN] = "--",
2045 [LLAP_ORIGIN_READPAGE] = "rp",
2046 [LLAP_ORIGIN_READAHEAD] = "ra",
2047 [LLAP_ORIGIN_COMMIT_WRITE] = "cw",
2048 [LLAP_ORIGIN_WRITEPAGE] = "wp",
2051 struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi,
2052 struct list_head *list)
2054 struct ll_async_page *llap;
2055 struct list_head *pos;
2057 list_for_each(pos, list) {
2058 if (pos == &sbi->ll_pglist)
2060 llap = list_entry(pos, struct ll_async_page, llap_pglist_item);
2061 if (llap->llap_page == NULL)
2069 int ll_obd_statfs(struct inode *inode, void *arg)
2071 struct ll_sb_info *sbi = NULL;
2072 struct obd_device *client_obd = NULL, *lov_obd = NULL;
2073 struct lov_obd *lov = NULL;
2074 struct obd_statfs stat_buf = {0};
2076 struct obd_ioctl_data *data = NULL;
2080 if (!inode || !(sbi = ll_i2sbi(inode)))
2081 GOTO(out_statfs, rc = -EINVAL);
2083 rc = obd_ioctl_getdata(&buf, &len, arg);
2085 GOTO(out_statfs, rc);
2088 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2089 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2090 GOTO(out_statfs, rc = -EINVAL);
2092 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2093 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
2095 if (type == LL_STATFS_MDC) {
2097 GOTO(out_statfs, rc = -ENODEV);
2098 client_obd = class_exp2obd(sbi->ll_md_exp);
2099 } else if (type == LL_STATFS_LOV) {
2100 lov_obd = class_exp2obd(sbi->ll_dt_exp);
2101 lov = &lov_obd->u.lov;
2103 if ((index >= lov->desc.ld_tgt_count))
2104 GOTO(out_statfs, rc = -ENODEV);
2105 if (!lov->lov_tgts[index])
2106 /* Try again with the next index */
2107 GOTO(out_statfs, rc = -EAGAIN);
2109 client_obd = class_exp2obd(lov->lov_tgts[index]->ltd_exp);
2110 if (!lov->lov_tgts[index]->ltd_active)
2111 GOTO(out_uuid, rc = -ENODATA);
2115 GOTO(out_statfs, rc = -EINVAL);
2117 rc = obd_statfs(client_obd, &stat_buf, cfs_time_current_64() - 1);
2119 GOTO(out_statfs, rc);
2121 if (copy_to_user(data->ioc_pbuf1, &stat_buf, data->ioc_plen1))
2122 GOTO(out_statfs, rc = -EFAULT);
2125 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(client_obd),
2131 obd_ioctl_freedata(buf, len);
2135 int ll_process_config(struct lustre_cfg *lcfg)
2139 struct lprocfs_static_vars lvars;
2143 lprocfs_llite_init_vars(&lvars);
2145 /* The instance name contains the sb: lustre-client-aacfe000 */
2146 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2147 if (!ptr || !*(++ptr))
2149 if (sscanf(ptr, "%lx", &x) != 1)
2152 /* This better be a real Lustre superblock! */
2153 LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2155 /* Note we have not called client_common_fill_super yet, so
2156 proc fns must be able to handle that! */
2157 rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
2162 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2163 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2164 struct inode *i1, struct inode *i2,
2165 const char *name, int namelen,
2166 int mode, __u32 opc, void *data)
2168 LASSERT(i1 != NULL);
2170 if (namelen > ll_i2sbi(i1)->ll_namelen)
2171 return ERR_PTR(-ENAMETOOLONG);
2173 if (op_data == NULL)
2174 OBD_ALLOC_PTR(op_data);
2176 if (op_data == NULL)
2177 return ERR_PTR(-ENOMEM);
2179 ll_i2gids(op_data->op_suppgids, i1, i2);
2180 op_data->op_fid1 = *ll_inode2fid(i1);
2181 op_data->op_capa1 = ll_mdscapa_get(i1);
2184 op_data->op_fid2 = *ll_inode2fid(i2);
2185 op_data->op_capa2 = ll_mdscapa_get(i2);
2187 fid_zero(&op_data->op_fid2);
2190 op_data->op_name = name;
2191 op_data->op_namelen = namelen;
2192 op_data->op_mode = mode;
2193 op_data->op_mod_time = CURRENT_SECONDS;
2194 op_data->op_fsuid = current->fsuid;
2195 op_data->op_fsgid = current->fsgid;
2196 op_data->op_cap = current->cap_effective;
2197 op_data->op_bias = MDS_CHECK_SPLIT;
2198 op_data->op_opc = opc;
2199 op_data->op_mds = 0;
2200 op_data->op_data = data;
2205 void ll_finish_md_op_data(struct md_op_data *op_data)
2207 capa_put(op_data->op_capa1);
2208 capa_put(op_data->op_capa2);
2209 OBD_FREE_PTR(op_data);
2212 int ll_ioctl_getfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc)
2214 struct ll_sb_info *sbi = ll_i2sbi(inode);
2215 struct ptlrpc_request *req = NULL;
2216 struct mdt_body *body;
2218 struct obd_capa *oc;
2222 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT))
2225 LASSERT(ioc->cmd && ioc->cmd_len && ioc->res && ioc->res_len);
2227 OBD_ALLOC(cmd, ioc->cmd_len);
2230 if (copy_from_user(cmd, ioc->cmd, ioc->cmd_len))
2231 GOTO(out, rc = -EFAULT);
2233 oc = ll_mdscapa_get(inode);
2234 rc = md_getxattr(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), oc,
2235 OBD_MD_FLXATTR, XATTR_NAME_LUSTRE_ACL, cmd,
2236 ioc->cmd_len, ioc->res_len, 0, &req);
2239 CERROR("mdc_getxattr %s [%s] failed: %d\n",
2240 XATTR_NAME_LUSTRE_ACL, cmd, rc);
2244 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
2247 buflen = lustre_msg_buflen(req->rq_repmsg, REPLY_REC_OFF);
2248 LASSERT(buflen <= ioc->res_len);
2249 buf = lustre_msg_string(req->rq_repmsg, REPLY_REC_OFF + 1, ioc->res_len);
2251 if (copy_to_user(ioc->res, buf, buflen))
2252 GOTO(out, rc = -EFAULT);
2256 ptlrpc_req_finished(req);
2257 OBD_FREE(cmd, ioc->cmd_len);
2261 int ll_ioctl_setfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc)
2263 struct ll_sb_info *sbi = ll_i2sbi(inode);
2264 struct ptlrpc_request *req = NULL;
2266 struct obd_capa *oc;
2270 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT))
2273 if (!(sbi->ll_flags & LL_SBI_ACL))
2274 RETURN(-EOPNOTSUPP);
2276 LASSERT(ioc->cmd && ioc->cmd_len && ioc->res && ioc->res_len);
2278 OBD_ALLOC(cmd, ioc->cmd_len);
2281 if (copy_from_user(cmd, ioc->cmd, ioc->cmd_len))
2282 GOTO(out, rc = -EFAULT);
2284 oc = ll_mdscapa_get(inode);
2285 rc = md_setxattr(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), oc,
2286 OBD_MD_FLXATTR, XATTR_NAME_LUSTRE_ACL, cmd,
2287 ioc->cmd_len, ioc->res_len, 0, &req);
2290 CERROR("mdc_setxattr %s [%s] failed: %d\n",
2291 XATTR_NAME_LUSTRE_ACL, cmd, rc);
2295 buflen = lustre_msg_buflen(req->rq_repmsg, REPLY_REC_OFF);
2296 LASSERT(buflen <= ioc->res_len);
2297 buf = lustre_msg_string(req->rq_repmsg, REPLY_REC_OFF, ioc->res_len);
2299 if (copy_to_user(ioc->res, buf, buflen))
2300 GOTO(out, rc = -EFAULT);
2304 ptlrpc_req_finished(req);
2305 OBD_FREE(cmd, ioc->cmd_len);