1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * Copyright (c) 2011 Whamcloud, Inc.
36 * This file is part of Lustre, http://www.lustre.org/
37 * Lustre is a trademark of Sun Microsystems, Inc.
39 * lustre/llite/llite_lib.c
41 * Lustre Light Super operations
44 #define DEBUG_SUBSYSTEM S_LLITE
46 #include <linux/module.h>
47 #include <linux/types.h>
48 #include <linux/version.h>
51 #include <lustre_lite.h>
52 #include <lustre_ha.h>
53 #include <lustre_dlm.h>
54 #include <lprocfs_status.h>
55 #include <lustre_disk.h>
56 #include <lustre_param.h>
57 #include <lustre_log.h>
58 #include <cl_object.h>
59 #include <obd_cksum.h>
60 #include "llite_internal.h"
62 cfs_mem_cache_t *ll_file_data_slab;
64 CFS_LIST_HEAD(ll_super_blocks);
65 cfs_spinlock_t ll_sb_lock = CFS_SPIN_LOCK_UNLOCKED;
67 #ifndef MS_HAS_NEW_AOPS
68 extern struct address_space_operations ll_aops;
69 extern struct address_space_operations ll_dir_aops;
71 extern struct address_space_operations_ext ll_aops;
72 extern struct address_space_operations_ext ll_dir_aops;
76 #define log2(n) cfs_ffz(~(n))
79 static struct ll_sb_info *ll_init_sbi(void)
81 struct ll_sb_info *sbi = NULL;
88 OBD_ALLOC(sbi, sizeof(*sbi));
92 cfs_spin_lock_init(&sbi->ll_lock);
93 cfs_init_mutex(&sbi->ll_lco.lco_lock);
94 cfs_spin_lock_init(&sbi->ll_pp_extent_lock);
95 cfs_spin_lock_init(&sbi->ll_process_lock);
96 sbi->ll_rw_stats_on = 0;
99 pages = si.totalram - si.totalhigh;
100 if (pages >> (20 - CFS_PAGE_SHIFT) < 512) {
101 #ifdef HAVE_BGL_SUPPORT
102 sbi->ll_async_page_max = pages / 4;
104 sbi->ll_async_page_max = pages / 2;
107 sbi->ll_async_page_max = (pages / 4) * 3;
110 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
111 SBI_DEFAULT_READAHEAD_MAX);
112 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
113 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
114 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
115 CFS_INIT_LIST_HEAD(&sbi->ll_conn_chain);
116 CFS_INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
118 ll_generate_random_uuid(uuid);
119 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
120 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
122 cfs_spin_lock(&ll_sb_lock);
123 cfs_list_add_tail(&sbi->ll_list, &ll_super_blocks);
124 cfs_spin_unlock(&ll_sb_lock);
126 #ifdef ENABLE_CHECKSUM
127 sbi->ll_flags |= LL_SBI_CHECKSUM;
130 #ifdef HAVE_LRU_RESIZE_SUPPORT
131 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
134 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
135 cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
137 cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
141 /* metadata statahead is enabled by default */
142 sbi->ll_sa_max = LL_SA_RPC_DEF;
143 atomic_set(&sbi->ll_sa_total, 0);
144 atomic_set(&sbi->ll_sa_wrong, 0);
149 void ll_free_sbi(struct super_block *sb)
151 struct ll_sb_info *sbi = ll_s2sbi(sb);
155 cfs_spin_lock(&ll_sb_lock);
156 cfs_list_del(&sbi->ll_list);
157 cfs_spin_unlock(&ll_sb_lock);
158 OBD_FREE(sbi, sizeof(*sbi));
163 static struct dentry_operations ll_d_root_ops = {
164 .d_compare = ll_dcompare,
165 .d_revalidate = ll_revalidate_nd,
168 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
169 struct vfsmount *mnt)
171 struct inode *root = 0;
172 struct ll_sb_info *sbi = ll_s2sbi(sb);
173 struct obd_device *obd;
174 struct obd_capa *oc = NULL;
175 struct obd_statfs *osfs = NULL;
176 struct ptlrpc_request *request = NULL;
177 struct obd_connect_data *data = NULL;
178 struct obd_uuid *uuid;
179 struct md_op_data *op_data;
180 struct lustre_md lmd;
182 int size, err, checksum;
185 obd = class_name2obd(md);
187 CERROR("MD %s: not setup or attached\n", md);
201 if (proc_lustre_fs_root) {
202 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
205 CERROR("could not register mount in /proc/fs/lustre\n");
208 /* indicate the features supported by this client */
209 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
210 OBD_CONNECT_JOIN | OBD_CONNECT_ATTRFID |
211 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
212 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
213 OBD_CONNECT_CANCELSET| OBD_CONNECT_FID |
214 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
215 OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR |
216 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH;
218 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
219 data->ocd_connect_flags |= OBD_CONNECT_SOM;
221 #ifdef HAVE_LRU_RESIZE_SUPPORT
222 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
223 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
225 #ifdef CONFIG_FS_POSIX_ACL
226 data->ocd_connect_flags |= OBD_CONNECT_ACL;
228 data->ocd_ibits_known = MDS_INODELOCK_FULL;
229 data->ocd_version = LUSTRE_VERSION_CODE;
231 if (sb->s_flags & MS_RDONLY)
232 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
233 if (sbi->ll_flags & LL_SBI_USER_XATTR)
234 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
236 #ifdef HAVE_MS_FLOCK_LOCK
237 /* force vfs to use lustre handler for flock() calls - bug 10743 */
238 sb->s_flags |= MS_FLOCK_LOCK;
240 #ifdef MS_HAS_NEW_AOPS
241 sb->s_flags |= MS_HAS_NEW_AOPS;
244 if (sbi->ll_flags & LL_SBI_FLOCK)
245 sbi->ll_fop = &ll_file_operations_flock;
246 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
247 sbi->ll_fop = &ll_file_operations;
249 sbi->ll_fop = &ll_file_operations_noflock;
252 data->ocd_connect_flags |= OBD_CONNECT_REAL;
253 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
254 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
256 data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
258 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
260 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
261 "recovery, of which this client is not a "
262 "part. Please wait for recovery to complete,"
263 " abort, or time out.\n", md);
266 CERROR("cannot connect to %s: rc = %d\n", md, err);
270 err = obd_fid_init(sbi->ll_md_exp);
272 CERROR("Can't init metadata layer FID infrastructure, "
277 err = obd_statfs(obd, osfs,
278 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 0);
280 GOTO(out_md_fid, err);
282 size = sizeof(*data);
283 err = obd_get_info(sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
284 KEY_CONN_DATA, &size, data, NULL);
286 CERROR("Get connect data failed: %d \n", err);
290 LASSERT(osfs->os_bsize);
291 sb->s_blocksize = osfs->os_bsize;
292 sb->s_blocksize_bits = log2(osfs->os_bsize);
293 sb->s_magic = LL_SUPER_MAGIC;
295 /* for bug 11559. in $LINUX/fs/read_write.c, function do_sendfile():
296 * retval = in_file->f_op->sendfile(...);
298 * retval = -EOVERFLOW;
300 * it will check if *ppos is greater than max. However, max equals to
301 * s_maxbytes, which is a negative integer in a x86_64 box since loff_t
302 * has been defined as a signed long long integer in linux kernel. */
303 #if BITS_PER_LONG == 64
304 sb->s_maxbytes = PAGE_CACHE_MAXBYTES >> 1;
306 sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
308 sbi->ll_namelen = osfs->os_namelen;
309 sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
311 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
312 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
313 LCONSOLE_INFO("Disabling user_xattr feature because "
314 "it is not supported on the server\n");
315 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
318 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
320 sb->s_flags |= MS_POSIXACL;
322 sbi->ll_flags |= LL_SBI_ACL;
324 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
326 sb->s_flags &= ~MS_POSIXACL;
328 sbi->ll_flags &= ~LL_SBI_ACL;
331 if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
332 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
333 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
334 LCONSOLE_INFO("client is set as remote by default.\n");
337 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
338 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
339 LCONSOLE_INFO("client claims to be remote, but server "
340 "rejected, forced to be local.\n");
344 if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
345 LCONSOLE_INFO("client enabled MDS capability!\n");
346 sbi->ll_flags |= LL_SBI_MDS_CAPA;
349 if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
350 LCONSOLE_INFO("client enabled OSS capability!\n");
351 sbi->ll_flags |= LL_SBI_OSS_CAPA;
354 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
355 sbi->ll_flags |= LL_SBI_64BIT_HASH;
357 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
358 sbi->ll_md_brw_size = data->ocd_brw_size;
360 sbi->ll_md_brw_size = CFS_PAGE_SIZE;
362 obd = class_name2obd(dt);
364 CERROR("DT %s: not setup or attached\n", dt);
365 GOTO(out_md_fid, err = -ENODEV);
368 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
369 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
370 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
371 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
372 OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
373 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
374 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
375 OBD_CONNECT_MAXBYTES;
377 if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
378 data->ocd_connect_flags |= OBD_CONNECT_SOM;
380 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
381 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
382 * disabled by default, because it can still be enabled on the
383 * fly via /proc. As a consequence, we still need to come to an
384 * agreement on the supported algorithms at connect time */
385 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
387 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
388 data->ocd_cksum_types = OBD_CKSUM_ADLER;
390 /* send the list of supported checksum types */
391 data->ocd_cksum_types = OBD_CKSUM_ALL;
394 #ifdef HAVE_LRU_RESIZE_SUPPORT
395 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
397 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
398 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
400 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
401 "ocd_grant: %d\n", data->ocd_connect_flags,
402 data->ocd_version, data->ocd_grant);
404 obd->obd_upcall.onu_owner = &sbi->ll_lco;
405 obd->obd_upcall.onu_upcall = cl_ocd_update;
407 data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
409 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data, NULL);
411 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
412 "recovery, of which this client is not a "
413 "part. Please wait for recovery to "
414 "complete, abort, or time out.\n", dt);
415 GOTO(out_md_fid, err);
417 CERROR("Cannot connect to %s: rc = %d\n", dt, err);
418 GOTO(out_md_fid, err);
421 err = obd_fid_init(sbi->ll_dt_exp);
423 CERROR("Can't init data layer FID infrastructure, "
428 cfs_mutex_down(&sbi->ll_lco.lco_lock);
429 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
430 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
431 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
432 cfs_mutex_up(&sbi->ll_lco.lco_lock);
434 fid_zero(&sbi->ll_root_fid);
435 err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
437 CERROR("cannot mds_connect: rc = %d\n", err);
438 GOTO(out_lock_cn_cb, err);
440 if (!fid_is_sane(&sbi->ll_root_fid)) {
441 CERROR("Invalid root fid during mount\n");
442 GOTO(out_lock_cn_cb, err = -EINVAL);
444 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
446 sb->s_op = &lustre_super_operations;
447 #if THREAD_SIZE >= 8192
448 sb->s_export_op = &lustre_export_operations;
452 * XXX: move this to after cbd setup? */
453 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
454 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
455 valid |= OBD_MD_FLRMTPERM;
456 else if (sbi->ll_flags & LL_SBI_ACL)
457 valid |= OBD_MD_FLACL;
459 OBD_ALLOC_PTR(op_data);
461 GOTO(out_lock_cn_cb, err = -ENOMEM);
463 op_data->op_fid1 = sbi->ll_root_fid;
464 op_data->op_mode = 0;
465 op_data->op_capa1 = oc;
466 op_data->op_valid = valid;
468 err = md_getattr(sbi->ll_md_exp, op_data, &request);
471 OBD_FREE_PTR(op_data);
473 CERROR("md_getattr failed for root: rc = %d\n", err);
474 GOTO(out_lock_cn_cb, err);
476 memset(&lmd, 0, sizeof(lmd));
477 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
478 sbi->ll_md_exp, &lmd);
480 CERROR("failed to understand root inode md: rc = %d\n", err);
481 ptlrpc_req_finished (request);
482 GOTO(out_lock_cn_cb, err);
485 LASSERT(fid_is_sane(&sbi->ll_root_fid));
486 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid, 0), &lmd);
487 md_free_lustre_md(sbi->ll_md_exp, &lmd);
488 ptlrpc_req_finished(request);
490 if (root == NULL || IS_ERR(root)) {
492 obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
493 #ifdef CONFIG_FS_POSIX_ACL
495 posix_acl_release(lmd.posix_acl);
496 lmd.posix_acl = NULL;
499 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
501 CERROR("lustre_lite: bad iget4 for root\n");
505 err = ll_close_thread_start(&sbi->ll_lcq);
507 CERROR("cannot start close thread: rc %d\n", err);
511 #ifdef CONFIG_FS_POSIX_ACL
512 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
513 rct_init(&sbi->ll_rct);
514 et_init(&sbi->ll_et);
518 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
519 err = obd_set_info_async(sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
520 KEY_CHECKSUM, sizeof(checksum), &checksum,
524 sb->s_root = d_alloc_root(root);
525 sb->s_root->d_op = &ll_d_root_ops;
527 sbi->ll_sdev_orig = sb->s_dev;
529 /* We set sb->s_dev equal on all lustre clients in order to support
530 * NFS export clustering. NFSD requires that the FSID be the same
532 /* s_dev is also used in lt_compare() to compare two fs, but that is
533 * only a node-local comparison. */
534 uuid = obd_get_uuid(sbi->ll_md_exp);
536 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
549 obd_fid_fini(sbi->ll_dt_exp);
551 obd_disconnect(sbi->ll_dt_exp);
552 sbi->ll_dt_exp = NULL;
554 obd_fid_fini(sbi->ll_md_exp);
556 obd_disconnect(sbi->ll_md_exp);
557 sbi->ll_md_exp = NULL;
563 lprocfs_unregister_mountpoint(sbi);
567 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
571 *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
573 rc = obd_get_info(sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
574 KEY_MAX_EASIZE, &size, lmmsize, NULL);
576 CERROR("Get max mdsize error rc %d \n", rc);
581 void ll_dump_inode(struct inode *inode)
583 struct list_head *tmp;
584 int dentry_count = 0;
586 LASSERT(inode != NULL);
588 list_for_each(tmp, &inode->i_dentry)
591 CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
592 inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
593 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
596 void lustre_dump_dentry(struct dentry *dentry, int recur)
598 struct list_head *tmp;
601 LASSERT(dentry != NULL);
603 list_for_each(tmp, &dentry->d_subdirs)
606 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
607 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
608 dentry->d_name.len, dentry->d_name.name,
609 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
610 dentry->d_parent, dentry->d_inode, atomic_read(&dentry->d_count),
611 dentry->d_flags, dentry->d_fsdata, subdirs);
612 if (dentry->d_inode != NULL)
613 ll_dump_inode(dentry->d_inode);
618 list_for_each(tmp, &dentry->d_subdirs) {
619 struct dentry *d = list_entry(tmp, struct dentry, d_child);
620 lustre_dump_dentry(d, recur - 1);
624 void client_common_put_super(struct super_block *sb)
626 struct ll_sb_info *sbi = ll_s2sbi(sb);
629 #ifdef CONFIG_FS_POSIX_ACL
630 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
631 et_fini(&sbi->ll_et);
632 rct_fini(&sbi->ll_rct);
636 obd_cancel_unused(sbi->ll_dt_exp, NULL, 0, NULL);
638 ll_close_thread_shutdown(sbi->ll_lcq);
642 cfs_list_del(&sbi->ll_conn_chain);
644 obd_fid_fini(sbi->ll_dt_exp);
645 obd_disconnect(sbi->ll_dt_exp);
646 sbi->ll_dt_exp = NULL;
648 lprocfs_unregister_mountpoint(sbi);
650 obd_fid_fini(sbi->ll_md_exp);
651 obd_disconnect(sbi->ll_md_exp);
652 sbi->ll_md_exp = NULL;
657 void ll_kill_super(struct super_block *sb)
659 struct ll_sb_info *sbi;
664 if (!(sb->s_flags & MS_ACTIVE))
668 /* we need restore s_dev from changed for clustred NFS before put_super
669 * because new kernels have cached s_dev and change sb->s_dev in
670 * put_super not affected real removing devices */
672 sb->s_dev = sbi->ll_sdev_orig;
676 char *ll_read_opt(const char *opt, char *data)
682 CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
683 if (strncmp(opt, data, strlen(opt)))
685 if ((value = strchr(data, '=')) == NULL)
689 OBD_ALLOC(retval, strlen(value) + 1);
691 CERROR("out of memory!\n");
695 memcpy(retval, value, strlen(value)+1);
696 CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
700 static inline int ll_set_opt(const char *opt, char *data, int fl)
702 if (strncmp(opt, data, strlen(opt)) != 0)
708 /* non-client-specific mount options are parsed in lmd_parse */
709 static int ll_options(char *options, int *flags)
712 char *s1 = options, *s2;
718 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
721 CDEBUG(D_SUPER, "next opt=%s\n", s1);
722 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
727 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
732 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
737 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
742 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
747 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
752 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,5,50,0)
753 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
755 /* Ignore deprecated mount option. The client will
756 * always try to mount with ACL support, whether this
757 * is used depends on whether server supports it. */
758 LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
759 "mount option 'acl'.\n");
762 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
764 LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
765 "mount option 'noacl'.\n");
769 #warning "{no}acl options have been deprecated since 1.8, please remove them"
771 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
777 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
782 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
787 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
792 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
797 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
802 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
807 tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW);
812 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
818 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
824 s2 = strchr(s1, ',');
832 void ll_lli_init(struct ll_inode_info *lli)
834 lli->lli_inode_magic = LLI_INODE_MAGIC;
835 cfs_sema_init(&lli->lli_size_sem, 1);
836 cfs_sema_init(&lli->lli_write_sem, 1);
837 cfs_init_rwsem(&lli->lli_trunc_sem);
839 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
840 cfs_spin_lock_init(&lli->lli_lock);
841 CFS_INIT_LIST_HEAD(&lli->lli_close_list);
842 lli->lli_inode_magic = LLI_INODE_MAGIC;
843 cfs_sema_init(&lli->lli_och_sem, 1);
844 lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
845 lli->lli_mds_exec_och = NULL;
846 lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
847 lli->lli_open_fd_exec_count = 0;
848 CFS_INIT_LIST_HEAD(&lli->lli_dead_list);
849 lli->lli_remote_perms = NULL;
850 lli->lli_rmtperm_utime = 0;
851 cfs_sema_init(&lli->lli_rmtperm_sem, 1);
852 CFS_INIT_LIST_HEAD(&lli->lli_oss_capas);
853 cfs_spin_lock_init(&lli->lli_sa_lock);
854 cfs_sema_init(&lli->lli_readdir_sem, 1);
855 fid_zero(&lli->lli_pfid);
858 static inline int ll_bdi_register(struct backing_dev_info *bdi)
860 #ifdef HAVE_BDI_REGISTER
861 static atomic_t ll_bdi_num = ATOMIC_INIT(0);
863 bdi->name = "lustre";
864 return bdi_register(bdi, NULL, "lustre-%d",
865 atomic_inc_return(&ll_bdi_num));
871 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
873 struct lustre_profile *lprof = NULL;
874 struct lustre_sb_info *lsi = s2lsi(sb);
875 struct ll_sb_info *sbi;
876 char *dt = NULL, *md = NULL;
877 char *profilenm = get_profile_name(sb);
878 struct config_llog_instance *cfg;
879 const int instlen = sizeof(cfg->cfg_instance) * 2 + 1;
883 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
891 /* client additional sb info */
892 lsi->lsi_llsbi = sbi = ll_init_sbi();
894 cfs_module_put(THIS_MODULE);
899 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
903 err = ll_bdi_init(&lsi->lsi_bdi);
906 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
907 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
908 err = ll_bdi_register(&lsi->lsi_bdi);
913 sb->s_bdi = &lsi->lsi_bdi;
916 /* Generate a string unique to this super, in case some joker tries
917 to mount the same fs at two mount points.
918 Use the address of the super itself.*/
919 cfg->cfg_instance = sb;
920 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
922 /* set up client obds */
923 err = lustre_process_log(sb, profilenm, cfg);
925 CERROR("Unable to process log: %d\n", err);
929 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
930 lprof = class_get_profile(profilenm);
932 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
933 " read from the MGS. Does that filesystem "
934 "exist?\n", profilenm);
935 GOTO(out_free, err = -EINVAL);
937 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
938 lprof->lp_md, lprof->lp_dt);
940 OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen);
942 GOTO(out_free, err = -ENOMEM);
943 sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
945 OBD_ALLOC(md, strlen(lprof->lp_md) + instlen);
947 GOTO(out_free, err = -ENOMEM);
948 sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
950 /* connections, registrations, sb setup */
951 err = client_common_fill_super(sb, md, dt, mnt);
955 OBD_FREE(md, strlen(lprof->lp_md) + instlen);
957 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen);
961 LCONSOLE_WARN("Client %s has started\n", profilenm);
965 } /* ll_fill_super */
968 void lu_context_keys_dump(void);
970 void ll_put_super(struct super_block *sb)
972 struct config_llog_instance cfg;
973 struct obd_device *obd;
974 struct lustre_sb_info *lsi = s2lsi(sb);
975 struct ll_sb_info *sbi = ll_s2sbi(sb);
976 char *profilenm = get_profile_name(sb);
980 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
982 ll_print_capa_stat(sbi);
984 cfg.cfg_instance = sb;
985 lustre_end_log(sb, profilenm, &cfg);
987 if (sbi->ll_md_exp) {
988 obd = class_exp2obd(sbi->ll_md_exp);
990 force = obd->obd_force;
993 /* We need to set force before the lov_disconnect in
994 lustre_common_put_super, since l_d cleans up osc's as well. */
997 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
999 obd->obd_force = force;
1004 /* Only if client_common_fill_super succeeded */
1005 client_common_put_super(sb);
1009 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1010 class_manual_cleanup(obd);
1014 class_del_profile(profilenm);
1016 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1017 ll_bdi_destroy(&lsi->lsi_bdi);
1018 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1022 lsi->lsi_llsbi = NULL;
1024 lustre_common_put_super(sb);
1026 cl_env_cache_purge(~0);
1028 LCONSOLE_WARN("client %p umount complete\n", cfg.cfg_instance);
1030 cfs_module_put(THIS_MODULE);
1033 } /* client_put_super */
1035 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
1037 struct inode *inode = NULL;
1038 /* NOTE: we depend on atomic igrab() -bzzz */
1039 lock_res_and_lock(lock);
1040 if (lock->l_ast_data) {
1041 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
1042 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1043 inode = igrab(lock->l_ast_data);
1045 inode = lock->l_ast_data;
1046 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1047 D_WARNING, lock, "l_ast_data %p is "
1048 "bogus: magic %08x", lock->l_ast_data,
1049 lli->lli_inode_magic);
1053 unlock_res_and_lock(lock);
1057 static int null_if_equal(struct ldlm_lock *lock, void *data)
1059 if (data == lock->l_ast_data) {
1060 lock->l_ast_data = NULL;
1062 if (lock->l_req_mode != lock->l_granted_mode)
1063 LDLM_ERROR(lock,"clearing inode with ungranted lock");
1066 return LDLM_ITER_CONTINUE;
1069 void ll_clear_inode(struct inode *inode)
1071 struct ll_inode_info *lli = ll_i2info(inode);
1072 struct ll_sb_info *sbi = ll_i2sbi(inode);
1075 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1076 inode->i_generation, inode);
1078 if (S_ISDIR(inode->i_mode)) {
1079 /* these should have been cleared in ll_file_release */
1080 LASSERT(lli->lli_sai == NULL);
1081 LASSERT(lli->lli_opendir_key == NULL);
1082 LASSERT(lli->lli_opendir_pid == 0);
1085 ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1086 md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
1087 null_if_equal, inode);
1089 LASSERT(!lli->lli_open_fd_write_count);
1090 LASSERT(!lli->lli_open_fd_read_count);
1091 LASSERT(!lli->lli_open_fd_exec_count);
1093 if (lli->lli_mds_write_och)
1094 ll_md_real_close(inode, FMODE_WRITE);
1095 if (lli->lli_mds_exec_och)
1096 ll_md_real_close(inode, FMODE_EXEC);
1097 if (lli->lli_mds_read_och)
1098 ll_md_real_close(inode, FMODE_READ);
1100 if (lli->lli_symlink_name) {
1101 OBD_FREE(lli->lli_symlink_name,
1102 strlen(lli->lli_symlink_name) + 1);
1103 lli->lli_symlink_name = NULL;
1106 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1107 LASSERT(lli->lli_posix_acl == NULL);
1108 if (lli->lli_remote_perms) {
1109 free_rmtperm_hash(lli->lli_remote_perms);
1110 lli->lli_remote_perms = NULL;
1113 #ifdef CONFIG_FS_POSIX_ACL
1114 else if (lli->lli_posix_acl) {
1115 LASSERT(cfs_atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1116 LASSERT(lli->lli_remote_perms == NULL);
1117 posix_acl_release(lli->lli_posix_acl);
1118 lli->lli_posix_acl = NULL;
1121 lli->lli_inode_magic = LLI_INODE_DEAD;
1123 ll_clear_inode_capas(inode);
1125 * XXX This has to be done before lsm is freed below, because
1126 * cl_object still uses inode lsm.
1128 cl_inode_fini(inode);
1131 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1132 lli->lli_smd = NULL;
1139 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
1140 struct md_open_data **mod)
1142 struct lustre_md md;
1143 struct ll_sb_info *sbi = ll_i2sbi(inode);
1144 struct ptlrpc_request *request = NULL;
1148 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1149 LUSTRE_OPC_ANY, NULL);
1150 if (IS_ERR(op_data))
1151 RETURN(PTR_ERR(op_data));
1153 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1156 ptlrpc_req_finished(request);
1157 if (rc == -ENOENT) {
1159 /* Unlinked special device node? Or just a race?
1160 * Pretend we done everything. */
1161 if (!S_ISREG(inode->i_mode) &&
1162 !S_ISDIR(inode->i_mode))
1163 rc = inode_setattr(inode, &op_data->op_attr);
1164 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1165 CERROR("md_setattr fails: rc = %d\n", rc);
1170 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1171 sbi->ll_md_exp, &md);
1173 ptlrpc_req_finished(request);
1177 /* We call inode_setattr to adjust timestamps.
1178 * If there is at least some data in file, we cleared ATTR_SIZE
1179 * above to avoid invoking vmtruncate, otherwise it is important
1180 * to call vmtruncate in inode_setattr to update inode->i_size
1182 rc = inode_setattr(inode, &op_data->op_attr);
1184 /* Extract epoch data if obtained. */
1185 op_data->op_handle = md.body->handle;
1186 op_data->op_ioepoch = md.body->ioepoch;
1188 ll_update_inode(inode, &md);
1189 ptlrpc_req_finished(request);
1194 /* Close IO epoch and send Size-on-MDS attribute update. */
1195 static int ll_setattr_done_writing(struct inode *inode,
1196 struct md_op_data *op_data,
1197 struct md_open_data *mod)
1199 struct ll_inode_info *lli = ll_i2info(inode);
1203 LASSERT(op_data != NULL);
1204 if (!S_ISREG(inode->i_mode))
1207 CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1208 op_data->op_ioepoch, PFID(&lli->lli_fid));
1210 op_data->op_flags = MF_EPOCH_CLOSE;
1211 ll_done_writing_attr(inode, op_data);
1212 ll_pack_inode2opdata(inode, op_data, NULL);
1214 rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1215 if (rc == -EAGAIN) {
1216 /* MDS has instructed us to obtain Size-on-MDS attribute
1217 * from OSTs and send setattr to back to MDS. */
1218 rc = ll_som_update(inode, op_data);
1220 CERROR("inode %lu mdc truncate failed: rc = %d\n",
1226 static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
1228 struct obd_capa *capa;
1231 if (attr->ia_valid & ATTR_SIZE)
1232 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
1234 capa = ll_mdscapa_get(inode);
1236 rc = cl_setattr_ost(inode, attr, capa);
1238 if (attr->ia_valid & ATTR_SIZE)
1239 ll_truncate_free_capa(capa);
1246 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1247 * object(s) determine the file size and mtime. Otherwise, the MDS will
1248 * keep these values until such a time that objects are allocated for it.
1249 * We do the MDS operations first, as it is checking permissions for us.
1250 * We don't to the MDS RPC if there is nothing that we want to store there,
1251 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1252 * going to do an RPC anyways.
1254 * If we are doing a truncate, we will send the mtime and ctime updates
1255 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1256 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1259 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1261 struct ll_inode_info *lli = ll_i2info(inode);
1262 struct lov_stripe_md *lsm = lli->lli_smd;
1263 struct md_op_data *op_data = NULL;
1264 struct md_open_data *mod = NULL;
1265 int ia_valid = attr->ia_valid;
1266 int rc = 0, rc1 = 0;
1269 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
1271 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETATTR, 1);
1273 if (ia_valid & ATTR_SIZE) {
1274 if (attr->ia_size > ll_file_maxbytes(inode)) {
1275 CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1276 attr->ia_size, ll_file_maxbytes(inode));
1280 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1283 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1284 if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1285 if (cfs_curproc_fsuid() != inode->i_uid &&
1286 !cfs_capable(CFS_CAP_FOWNER))
1290 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1291 if (attr->ia_valid & ATTR_CTIME) {
1292 attr->ia_ctime = CFS_CURRENT_TIME;
1293 attr->ia_valid |= ATTR_CTIME_SET;
1295 if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1296 attr->ia_atime = CFS_CURRENT_TIME;
1297 attr->ia_valid |= ATTR_ATIME_SET;
1299 if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1300 attr->ia_mtime = CFS_CURRENT_TIME;
1301 attr->ia_valid |= ATTR_MTIME_SET;
1304 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1305 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1306 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1307 cfs_time_current_sec());
1309 /* NB: ATTR_SIZE will only be set after this point if the size
1310 * resides on the MDS, ie, this file has no objects. */
1312 attr->ia_valid &= ~ATTR_SIZE;
1314 /* We always do an MDS RPC, even if we're only changing the size;
1315 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1317 OBD_ALLOC_PTR(op_data);
1318 if (op_data == NULL)
1321 UNLOCK_INODE_MUTEX(inode);
1322 if (ia_valid & ATTR_SIZE)
1323 UP_WRITE_I_ALLOC_SEM(inode);
1324 cfs_down_write(&lli->lli_trunc_sem);
1325 LOCK_INODE_MUTEX(inode);
1326 if (ia_valid & ATTR_SIZE)
1327 DOWN_WRITE_I_ALLOC_SEM(inode);
1329 memcpy(&op_data->op_attr, attr, sizeof(*attr));
1331 /* Open epoch for truncate. */
1332 if (exp_connect_som(ll_i2mdexp(inode)) &&
1333 (ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
1334 op_data->op_flags = MF_EPOCH_OPEN;
1336 rc = ll_md_setattr(inode, op_data, &mod);
1340 ll_ioepoch_open(lli, op_data->op_ioepoch);
1341 if (!lsm || !S_ISREG(inode->i_mode)) {
1342 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1346 if (ia_valid & ATTR_SIZE)
1347 attr->ia_valid |= ATTR_SIZE;
1348 if (ia_valid & (ATTR_SIZE |
1349 ATTR_ATIME | ATTR_ATIME_SET |
1350 ATTR_MTIME | ATTR_MTIME_SET))
1351 /* on truncate and utimes send attributes to osts, setting
1352 * mtime/atime to past will be performed under PW 0:EOF extent
1353 * lock (new_size:EOF for truncate)
1354 * it may seem excessive to send mtime/atime updates to osts
1355 * when not setting times to past, but it is necessary due to
1356 * possible time de-synchronization */
1357 rc = ll_setattr_ost(inode, attr);
1361 if (op_data->op_ioepoch)
1362 rc1 = ll_setattr_done_writing(inode, op_data, mod);
1363 ll_finish_md_op_data(op_data);
1365 cfs_up_write(&lli->lli_trunc_sem);
1366 return rc ? rc : rc1;
1369 int ll_setattr(struct dentry *de, struct iattr *attr)
1371 int mode = de->d_inode->i_mode;
1373 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1374 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1375 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1377 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1378 (ATTR_SIZE|ATTR_MODE)) &&
1379 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1380 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1381 !(attr->ia_mode & S_ISGID))))
1382 attr->ia_valid |= ATTR_FORCE;
1384 if ((mode & S_ISUID) &&
1385 !(attr->ia_mode & S_ISUID) &&
1386 !(attr->ia_valid & ATTR_KILL_SUID))
1387 attr->ia_valid |= ATTR_KILL_SUID;
1389 if (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1390 !(attr->ia_mode & S_ISGID) &&
1391 !(attr->ia_valid & ATTR_KILL_SGID))
1392 attr->ia_valid |= ATTR_KILL_SGID;
1394 return ll_setattr_raw(de->d_inode, attr);
1397 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1398 __u64 max_age, __u32 flags)
1400 struct ll_sb_info *sbi = ll_s2sbi(sb);
1401 struct obd_statfs obd_osfs;
1405 rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, flags);
1407 CERROR("md_statfs fails: rc = %d\n", rc);
1411 osfs->os_type = sb->s_magic;
1413 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1414 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1416 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1417 flags |= OBD_STATFS_NODELAY;
1419 rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
1420 &obd_osfs, max_age, flags);
1422 CERROR("obd_statfs fails: rc = %d\n", rc);
1426 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1427 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1430 osfs->os_bsize = obd_osfs.os_bsize;
1431 osfs->os_blocks = obd_osfs.os_blocks;
1432 osfs->os_bfree = obd_osfs.os_bfree;
1433 osfs->os_bavail = obd_osfs.os_bavail;
1435 /* If we don't have as many objects free on the OST as inodes
1436 * on the MDS, we reduce the total number of inodes to
1437 * compensate, so that the "inodes in use" number is correct.
1439 if (obd_osfs.os_ffree < osfs->os_ffree) {
1440 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1442 osfs->os_ffree = obd_osfs.os_ffree;
1447 #ifndef HAVE_STATFS_DENTRY_PARAM
1448 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1451 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1453 struct super_block *sb = de->d_sb;
1455 struct obd_statfs osfs;
1458 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1459 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1461 /* Some amount of caching on the client is allowed */
1462 rc = ll_statfs_internal(sb, &osfs,
1463 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1468 statfs_unpack(sfs, &osfs);
1470 /* We need to downshift for all 32-bit kernels, because we can't
1471 * tell if the kernel is being called via sys_statfs64() or not.
1472 * Stop before overflowing f_bsize - in which case it is better
1473 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1474 if (sizeof(long) < 8) {
1475 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1478 osfs.os_blocks >>= 1;
1479 osfs.os_bfree >>= 1;
1480 osfs.os_bavail >>= 1;
1484 sfs->f_blocks = osfs.os_blocks;
1485 sfs->f_bfree = osfs.os_bfree;
1486 sfs->f_bavail = osfs.os_bavail;
1491 void ll_inode_size_lock(struct inode *inode, int lock_lsm)
1493 struct ll_inode_info *lli;
1494 struct lov_stripe_md *lsm;
1496 lli = ll_i2info(inode);
1497 LASSERT(lli->lli_size_sem_owner != current);
1498 cfs_down(&lli->lli_size_sem);
1499 LASSERT(lli->lli_size_sem_owner == NULL);
1500 lli->lli_size_sem_owner = current;
1502 LASSERTF(lsm != NULL || lock_lsm == 0, "lsm %p, lock_lsm %d\n",
1505 lov_stripe_lock(lsm);
1508 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
1510 struct ll_inode_info *lli;
1511 struct lov_stripe_md *lsm;
1513 lli = ll_i2info(inode);
1515 LASSERTF(lsm != NULL || unlock_lsm == 0, "lsm %p, lock_lsm %d\n",
1518 lov_stripe_unlock(lsm);
1519 LASSERT(lli->lli_size_sem_owner == current);
1520 lli->lli_size_sem_owner = NULL;
1521 cfs_up(&lli->lli_size_sem);
1524 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1526 struct ll_inode_info *lli = ll_i2info(inode);
1527 struct mdt_body *body = md->body;
1528 struct lov_stripe_md *lsm = md->lsm;
1529 struct ll_sb_info *sbi = ll_i2sbi(inode);
1531 LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1533 cfs_down(&lli->lli_och_sem);
1534 if (lli->lli_smd == NULL) {
1535 if (lsm->lsm_magic != LOV_MAGIC_V1 &&
1536 lsm->lsm_magic != LOV_MAGIC_V3) {
1537 dump_lsm(D_ERROR, lsm);
1540 CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
1541 lsm, inode->i_ino, inode->i_generation, inode);
1542 /* cl_inode_init must go before lli_smd or a race is
1543 * possible where client thinks the file has stripes,
1544 * but lov raid0 is not setup yet and parallel e.g.
1545 * glimpse would try to use uninitialized lov */
1546 cl_inode_init(inode, md);
1547 cfs_spin_lock(&lli->lli_lock);
1549 cfs_spin_unlock(&lli->lli_lock);
1550 cfs_up(&lli->lli_och_sem);
1551 lli->lli_maxbytes = lsm->lsm_maxbytes;
1552 if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1553 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1555 cfs_up(&lli->lli_och_sem);
1556 LASSERT(lli->lli_smd->lsm_magic == lsm->lsm_magic &&
1557 lli->lli_smd->lsm_stripe_count ==
1558 lsm->lsm_stripe_count);
1559 if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
1560 CERROR("lsm mismatch for inode %ld\n",
1562 CERROR("lli_smd:\n");
1563 dump_lsm(D_ERROR, lli->lli_smd);
1565 dump_lsm(D_ERROR, lsm);
1569 if (lli->lli_smd != lsm)
1570 obd_free_memmd(ll_i2dtexp(inode), &lsm);
1573 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1574 if (body->valid & OBD_MD_FLRMTPERM)
1575 ll_update_remote_perm(inode, md->remote_perm);
1577 #ifdef CONFIG_FS_POSIX_ACL
1578 else if (body->valid & OBD_MD_FLACL) {
1579 cfs_spin_lock(&lli->lli_lock);
1580 if (lli->lli_posix_acl)
1581 posix_acl_release(lli->lli_posix_acl);
1582 lli->lli_posix_acl = md->posix_acl;
1583 cfs_spin_unlock(&lli->lli_lock);
1586 inode->i_ino = cl_fid_build_ino(&body->fid1, 0);
1587 inode->i_generation = cl_fid_build_gen(&body->fid1);
1589 if (body->valid & OBD_MD_FLATIME) {
1590 if (body->atime > LTIME_S(inode->i_atime))
1591 LTIME_S(inode->i_atime) = body->atime;
1592 lli->lli_lvb.lvb_atime = body->atime;
1594 if (body->valid & OBD_MD_FLMTIME) {
1595 if (body->mtime > LTIME_S(inode->i_mtime)) {
1596 CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1597 "to "LPU64"\n", inode->i_ino,
1598 LTIME_S(inode->i_mtime), body->mtime);
1599 LTIME_S(inode->i_mtime) = body->mtime;
1601 lli->lli_lvb.lvb_mtime = body->mtime;
1603 if (body->valid & OBD_MD_FLCTIME) {
1604 if (body->ctime > LTIME_S(inode->i_ctime))
1605 LTIME_S(inode->i_ctime) = body->ctime;
1606 lli->lli_lvb.lvb_ctime = body->ctime;
1608 if (body->valid & OBD_MD_FLMODE)
1609 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
1610 if (body->valid & OBD_MD_FLTYPE)
1611 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
1612 LASSERT(inode->i_mode != 0);
1613 if (S_ISREG(inode->i_mode)) {
1614 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
1616 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1618 #ifdef HAVE_INODE_BLKSIZE
1619 inode->i_blksize = 1<<inode->i_blkbits;
1621 if (body->valid & OBD_MD_FLUID)
1622 inode->i_uid = body->uid;
1623 if (body->valid & OBD_MD_FLGID)
1624 inode->i_gid = body->gid;
1625 if (body->valid & OBD_MD_FLFLAGS)
1626 inode->i_flags = ll_ext_to_inode_flags(body->flags);
1627 if (body->valid & OBD_MD_FLNLINK)
1628 inode->i_nlink = body->nlink;
1629 if (body->valid & OBD_MD_FLRDEV)
1630 inode->i_rdev = old_decode_dev(body->rdev);
1632 if (body->valid & OBD_MD_FLID) {
1633 /* FID shouldn't be changed! */
1634 if (fid_is_sane(&lli->lli_fid)) {
1635 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
1636 "Trying to change FID "DFID
1637 " to the "DFID", inode %lu/%u(%p)\n",
1638 PFID(&lli->lli_fid), PFID(&body->fid1),
1639 inode->i_ino, inode->i_generation, inode);
1641 lli->lli_fid = body->fid1;
1644 LASSERT(fid_seq(&lli->lli_fid) != 0);
1646 if (body->valid & OBD_MD_FLSIZE) {
1647 if (exp_connect_som(ll_i2mdexp(inode)) &&
1648 S_ISREG(inode->i_mode) && lli->lli_smd) {
1649 struct lustre_handle lockh;
1652 /* As it is possible a blocking ast has been processed
1653 * by this time, we need to check there is an UPDATE
1654 * lock on the client and set LLIF_MDS_SIZE_LOCK holding
1656 mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
1659 if (lli->lli_flags & (LLIF_DONE_WRITING |
1660 LLIF_EPOCH_PENDING |
1662 CERROR("ino %lu flags %lu still has "
1663 "size authority! do not trust "
1664 "the size got from MDS\n",
1665 inode->i_ino, lli->lli_flags);
1667 /* Use old size assignment to avoid
1668 * deadlock bz14138 & bz14326 */
1669 inode->i_size = body->size;
1670 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
1672 ldlm_lock_decref(&lockh, mode);
1675 /* Use old size assignment to avoid
1676 * deadlock bz14138 & bz14326 */
1677 inode->i_size = body->size;
1679 CDEBUG(D_VFSTRACE, "inode=%lu, updating i_size %llu\n",
1680 inode->i_ino, (unsigned long long)body->size);
1683 if (body->valid & OBD_MD_FLBLOCKS)
1684 inode->i_blocks = body->blocks;
1687 if (body->valid & OBD_MD_FLMDSCAPA) {
1688 LASSERT(md->mds_capa);
1689 ll_add_capa(inode, md->mds_capa);
1691 if (body->valid & OBD_MD_FLOSSCAPA) {
1692 LASSERT(md->oss_capa);
1693 ll_add_capa(inode, md->oss_capa);
1697 void ll_read_inode2(struct inode *inode, void *opaque)
1699 struct lustre_md *md = opaque;
1700 struct ll_inode_info *lli = ll_i2info(inode);
1703 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n",
1704 inode->i_ino, inode->i_generation, inode);
1708 LASSERT(!lli->lli_smd);
1710 /* Core attributes from the MDS first. This is a new inode, and
1711 * the VFS doesn't zero times in the core inode so we have to do
1712 * it ourselves. They will be overwritten by either MDS or OST
1713 * attributes - we just need to make sure they aren't newer. */
1714 LTIME_S(inode->i_mtime) = 0;
1715 LTIME_S(inode->i_atime) = 0;
1716 LTIME_S(inode->i_ctime) = 0;
1718 ll_update_inode(inode, md);
1720 /* OIDEBUG(inode); */
1722 /* initializing backing dev info. */
1723 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
1726 if (S_ISREG(inode->i_mode)) {
1727 struct ll_sb_info *sbi = ll_i2sbi(inode);
1728 inode->i_op = &ll_file_inode_operations;
1729 inode->i_fop = sbi->ll_fop;
1730 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
1732 } else if (S_ISDIR(inode->i_mode)) {
1733 inode->i_op = &ll_dir_inode_operations;
1734 inode->i_fop = &ll_dir_operations;
1735 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_dir_aops;
1737 } else if (S_ISLNK(inode->i_mode)) {
1738 inode->i_op = &ll_fast_symlink_inode_operations;
1741 inode->i_op = &ll_special_inode_operations;
1743 init_special_inode(inode, inode->i_mode,
1744 kdev_t_to_nr(inode->i_rdev));
1750 void ll_delete_inode(struct inode *inode)
1752 struct ll_sb_info *sbi = ll_i2sbi(inode);
1756 rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
1758 CERROR("fid_delete() failed, rc %d\n", rc);
1760 truncate_inode_pages(&inode->i_data, 0);
1762 /* Workaround for LU-118 */
1763 if (inode->i_data.nrpages) {
1764 TREE_READ_LOCK_IRQ(&inode->i_data);
1765 TREE_READ_UNLOCK_IRQ(&inode->i_data);
1766 LASSERTF(inode->i_data.nrpages == 0,
1767 "inode=%lu/%u(%p) nrpages=%lu, see "
1768 "http://jira.whamcloud.com/browse/LU-118\n",
1769 inode->i_ino, inode->i_generation, inode,
1770 inode->i_data.nrpages);
1772 /* Workaround end */
1779 int ll_iocontrol(struct inode *inode, struct file *file,
1780 unsigned int cmd, unsigned long arg)
1782 struct ll_sb_info *sbi = ll_i2sbi(inode);
1783 struct ptlrpc_request *req = NULL;
1788 case FSFILT_IOC_GETFLAGS: {
1789 struct mdt_body *body;
1790 struct md_op_data *op_data;
1792 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
1793 0, 0, LUSTRE_OPC_ANY,
1795 if (op_data == NULL)
1798 op_data->op_valid = OBD_MD_FLFLAGS;
1799 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
1800 ll_finish_md_op_data(op_data);
1802 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1806 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1808 flags = body->flags;
1810 ptlrpc_req_finished(req);
1812 RETURN(put_user(flags, (int *)arg));
1814 case FSFILT_IOC_SETFLAGS: {
1815 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1816 struct obd_info oinfo = { { { 0 } } };
1817 struct md_op_data *op_data;
1819 if (get_user(flags, (int *)arg))
1823 OBDO_ALLOC(oinfo.oi_oa);
1827 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
1828 LUSTRE_OPC_ANY, NULL);
1829 if (IS_ERR(op_data))
1830 RETURN(PTR_ERR(op_data));
1832 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
1833 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
1834 rc = md_setattr(sbi->ll_md_exp, op_data,
1835 NULL, 0, NULL, 0, &req, NULL);
1836 ll_finish_md_op_data(op_data);
1837 ptlrpc_req_finished(req);
1839 OBDO_FREE(oinfo.oi_oa);
1844 OBDO_FREE(oinfo.oi_oa);
1845 GOTO(update_cache, rc);
1848 oinfo.oi_oa->o_id = lsm->lsm_object_id;
1849 oinfo.oi_oa->o_seq = lsm->lsm_object_seq;
1850 oinfo.oi_oa->o_flags = flags;
1851 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
1853 oinfo.oi_capa = ll_mdscapa_get(inode);
1854 obdo_from_inode(oinfo.oi_oa, inode,
1855 &ll_i2info(inode)->lli_fid, 0);
1856 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1857 capa_put(oinfo.oi_capa);
1858 OBDO_FREE(oinfo.oi_oa);
1860 if (rc != -EPERM && rc != -EACCES)
1861 CERROR("osc_setattr_async fails: rc = %d\n",rc);
1867 inode->i_flags = ll_ext_to_inode_flags(flags);
1877 int ll_flush_ctx(struct inode *inode)
1879 struct ll_sb_info *sbi = ll_i2sbi(inode);
1881 CDEBUG(D_SEC, "flush context for user %d\n", cfs_curproc_uid());
1883 obd_set_info_async(sbi->ll_md_exp,
1884 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
1886 obd_set_info_async(sbi->ll_dt_exp,
1887 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
1892 /* umount -f client means force down, don't save state */
1893 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1894 void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
1896 struct super_block *sb = vfsmnt->mnt_sb;
1898 void ll_umount_begin(struct super_block *sb)
1901 struct lustre_sb_info *lsi = s2lsi(sb);
1902 struct ll_sb_info *sbi = ll_s2sbi(sb);
1903 struct obd_device *obd;
1904 struct obd_ioctl_data *ioc_data;
1907 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1908 if (!(flags & MNT_FORCE)) {
1914 /* Tell the MGC we got umount -f */
1915 lsi->lsi_flags |= LSI_UMOUNT_FORCE;
1917 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
1918 sb->s_count, atomic_read(&sb->s_active));
1920 obd = class_exp2obd(sbi->ll_md_exp);
1922 CERROR("Invalid MDC connection handle "LPX64"\n",
1923 sbi->ll_md_exp->exp_handle.h_cookie);
1929 obd = class_exp2obd(sbi->ll_dt_exp);
1931 CERROR("Invalid LOV connection handle "LPX64"\n",
1932 sbi->ll_dt_exp->exp_handle.h_cookie);
1938 OBD_ALLOC_PTR(ioc_data);
1940 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
1941 sizeof ioc_data, ioc_data, NULL);
1943 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
1944 sizeof ioc_data, ioc_data, NULL);
1946 OBD_FREE_PTR(ioc_data);
1950 /* Really, we'd like to wait until there are no requests outstanding,
1951 * and then continue. For now, we just invalidate the requests,
1952 * schedule() and sleep one second if needed, and hope.
1955 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1956 if (atomic_read(&vfsmnt->mnt_count) > 2) {
1957 cfs_schedule_timeout_and_set_state(CFS_TASK_INTERRUPTIBLE,
1958 cfs_time_seconds(1));
1959 if (atomic_read(&vfsmnt->mnt_count) > 2)
1960 LCONSOLE_WARN("Mount still busy with %d refs! You "
1961 "may try to umount it a bit later\n",
1962 atomic_read(&vfsmnt->mnt_count));
1969 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
1971 struct ll_sb_info *sbi = ll_s2sbi(sb);
1975 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
1976 read_only = *flags & MS_RDONLY;
1977 err = obd_set_info_async(sbi->ll_md_exp,
1978 sizeof(KEY_READ_ONLY),
1979 KEY_READ_ONLY, sizeof(read_only),
1982 CERROR("Failed to change the read-only flag during "
1983 "remount: %d\n", err);
1988 sb->s_flags |= MS_RDONLY;
1990 sb->s_flags &= ~MS_RDONLY;
1995 int ll_prep_inode(struct inode **inode,
1996 struct ptlrpc_request *req,
1997 struct super_block *sb)
1999 struct ll_sb_info *sbi = NULL;
2000 struct lustre_md md;
2004 LASSERT(*inode || sb);
2005 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2006 memset(&md, 0, sizeof(struct lustre_md));
2008 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2009 sbi->ll_md_exp, &md);
2014 ll_update_inode(*inode, &md);
2016 LASSERT(sb != NULL);
2019 * At this point server returns to client's same fid as client
2020 * generated for creating. So using ->fid1 is okay here.
2022 LASSERT(fid_is_sane(&md.body->fid1));
2024 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1, 0), &md);
2025 if (*inode == NULL || IS_ERR(*inode)) {
2027 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2028 #ifdef CONFIG_FS_POSIX_ACL
2030 posix_acl_release(md.posix_acl);
2031 md.posix_acl = NULL;
2034 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2036 CERROR("new_inode -fatal: rc %d\n", rc);
2042 md_free_lustre_md(sbi->ll_md_exp, &md);
2046 int ll_obd_statfs(struct inode *inode, void *arg)
2048 struct ll_sb_info *sbi = NULL;
2049 struct obd_export *exp;
2051 struct obd_ioctl_data *data = NULL;
2055 if (!inode || !(sbi = ll_i2sbi(inode)))
2056 GOTO(out_statfs, rc = -EINVAL);
2058 rc = obd_ioctl_getdata(&buf, &len, arg);
2060 GOTO(out_statfs, rc);
2063 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2064 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2065 GOTO(out_statfs, rc = -EINVAL);
2067 if (data->ioc_inllen1 != sizeof(__u32) ||
2068 data->ioc_inllen2 != sizeof(__u32) ||
2069 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2070 data->ioc_plen2 != sizeof(struct obd_uuid))
2071 GOTO(out_statfs, rc = -EINVAL);
2073 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2074 if (type == LL_STATFS_MDC)
2075 exp = sbi->ll_md_exp;
2076 else if (type == LL_STATFS_LOV)
2077 exp = sbi->ll_dt_exp;
2079 GOTO(out_statfs, rc = -ENODEV);
2081 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2083 GOTO(out_statfs, rc);
2086 obd_ioctl_freedata(buf, len);
2090 int ll_process_config(struct lustre_cfg *lcfg)
2094 struct lprocfs_static_vars lvars;
2098 lprocfs_llite_init_vars(&lvars);
2100 /* The instance name contains the sb: lustre-client-aacfe000 */
2101 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2102 if (!ptr || !*(++ptr))
2104 if (sscanf(ptr, "%lx", &x) != 1)
2107 /* This better be a real Lustre superblock! */
2108 LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2110 /* Note we have not called client_common_fill_super yet, so
2111 proc fns must be able to handle that! */
2112 rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
2119 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2120 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2121 struct inode *i1, struct inode *i2,
2122 const char *name, int namelen,
2123 int mode, __u32 opc, void *data)
2125 LASSERT(i1 != NULL);
2127 if (namelen > ll_i2sbi(i1)->ll_namelen)
2128 return ERR_PTR(-ENAMETOOLONG);
2130 if (op_data == NULL)
2131 OBD_ALLOC_PTR(op_data);
2133 if (op_data == NULL)
2134 return ERR_PTR(-ENOMEM);
2136 ll_i2gids(op_data->op_suppgids, i1, i2);
2137 op_data->op_fid1 = *ll_inode2fid(i1);
2138 op_data->op_capa1 = ll_mdscapa_get(i1);
2141 op_data->op_fid2 = *ll_inode2fid(i2);
2142 op_data->op_capa2 = ll_mdscapa_get(i2);
2144 fid_zero(&op_data->op_fid2);
2145 op_data->op_capa2 = NULL;
2148 op_data->op_name = name;
2149 op_data->op_namelen = namelen;
2150 op_data->op_mode = mode;
2151 op_data->op_mod_time = cfs_time_current_sec();
2152 op_data->op_fsuid = cfs_curproc_fsuid();
2153 op_data->op_fsgid = cfs_curproc_fsgid();
2154 op_data->op_cap = cfs_curproc_cap_pack();
2155 op_data->op_bias = MDS_CHECK_SPLIT;
2156 op_data->op_opc = opc;
2157 op_data->op_mds = 0;
2158 op_data->op_data = data;
2160 /* If the file is being opened after mknod() (normally due to NFS)
2161 * try to use the default stripe data from parent directory for
2162 * allocating OST objects. Try to pass the parent FID to MDS. */
2163 if (opc == LUSTRE_OPC_CREATE && i1 == i2 && S_ISREG(i2->i_mode) &&
2164 ll_i2info(i2)->lli_smd == NULL) {
2165 struct ll_inode_info *lli = ll_i2info(i2);
2167 cfs_spin_lock(&lli->lli_lock);
2168 if (likely(lli->lli_smd == NULL &&
2169 !fid_is_zero(&lli->lli_pfid)))
2170 op_data->op_fid1 = lli->lli_pfid;
2171 cfs_spin_unlock(&lli->lli_lock);
2172 /** We ignore parent's capability temporary. */
2178 void ll_finish_md_op_data(struct md_op_data *op_data)
2180 capa_put(op_data->op_capa1);
2181 capa_put(op_data->op_capa2);
2182 OBD_FREE_PTR(op_data);
2185 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2187 struct ll_sb_info *sbi;
2189 LASSERT((seq != NULL) && (vfs != NULL));
2190 sbi = ll_s2sbi(vfs->mnt_sb);
2192 if (sbi->ll_flags & LL_SBI_NOLCK)
2193 seq_puts(seq, ",nolock");
2195 if (sbi->ll_flags & LL_SBI_FLOCK)
2196 seq_puts(seq, ",flock");
2198 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2199 seq_puts(seq, ",localflock");
2201 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2202 seq_puts(seq, ",user_xattr");
2204 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2205 seq_puts(seq, ",lazystatfs");