lustre/llite/llite_lib.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   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.
  11  *
  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).
  17  *
  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
  21  *
  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
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  *
  32  * Copyright (c) 2011, 2012, Whamcloud, Inc.
  33  */
  34 /*
  35  * This file is part of Lustre, http://www.lustre.org/
  36  * Lustre is a trademark of Sun Microsystems, Inc.
  37  *
  38  * lustre/llite/llite_lib.c
  39  *
  40  * Lustre Light Super operations
  41  */
  42
  43 #define DEBUG_SUBSYSTEM S_LLITE
  44
  45 #include <linux/module.h>
  46 #include <linux/types.h>
  47 #include <linux/version.h>
  48 #include <linux/mm.h>
  49
  50 #include <lustre_lite.h>
  51 #include <lustre_ha.h>
  52 #include <lustre_dlm.h>
  53 #include <lprocfs_status.h>
  54 #include <lustre_disk.h>
  55 #include <lustre_param.h>
  56 #include <lustre_log.h>
  57 #include <cl_object.h>
  58 #include <obd_cksum.h>
  59 #include "llite_internal.h"
  60
  61 cfs_mem_cache_t *ll_file_data_slab;
  62
  63 CFS_LIST_HEAD(ll_super_blocks);
  64 cfs_spinlock_t ll_sb_lock = CFS_SPIN_LOCK_UNLOCKED;
  65
  66 #ifndef MS_HAS_NEW_AOPS
  67 extern struct address_space_operations ll_aops;
  68 extern struct address_space_operations ll_dir_aops;
  69 #else
  70 extern struct address_space_operations_ext ll_aops;
  71 extern struct address_space_operations_ext ll_dir_aops;
  72 #endif
  73
  74 #ifndef log2
  75 #define log2(n) cfs_ffz(~(n))
  76 #endif
  77
  78 static struct ll_sb_info *ll_init_sbi(void)
  79 {
  80         struct ll_sb_info *sbi = NULL;
  81         unsigned long pages;
  82         struct sysinfo si;
  83         class_uuid_t uuid;
  84         int i;
  85         ENTRY;
  86
  87         OBD_ALLOC(sbi, sizeof(*sbi));
  88         if (!sbi)
  89                 RETURN(NULL);
  90
  91         cfs_spin_lock_init(&sbi->ll_lock);
  92         cfs_mutex_init(&sbi->ll_lco.lco_lock);
  93         cfs_spin_lock_init(&sbi->ll_pp_extent_lock);
  94         cfs_spin_lock_init(&sbi->ll_process_lock);
  95         sbi->ll_rw_stats_on = 0;
  96
  97         si_meminfo(&si);
  98         pages = si.totalram - si.totalhigh;
  99         if (pages >> (20 - CFS_PAGE_SHIFT) < 512) {
 100 #ifdef HAVE_BGL_SUPPORT
 101                 sbi->ll_async_page_max = pages / 4;
 102 #else
 103                 sbi->ll_async_page_max = pages / 2;
 104 #endif
 105         } else {
 106                 sbi->ll_async_page_max = (pages / 4) * 3;
 107         }
 108
 109         sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
 110                                            SBI_DEFAULT_READAHEAD_MAX);
 111         sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
 112         sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
 113                                            SBI_DEFAULT_READAHEAD_WHOLE_MAX;
 114         CFS_INIT_LIST_HEAD(&sbi->ll_conn_chain);
 115         CFS_INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
 116
 117         ll_generate_random_uuid(uuid);
 118         class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
 119         CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
 120
 121         cfs_spin_lock(&ll_sb_lock);
 122         cfs_list_add_tail(&sbi->ll_list, &ll_super_blocks);
 123         cfs_spin_unlock(&ll_sb_lock);
 124
 125 #ifdef ENABLE_CHECKSUM
 126         sbi->ll_flags |= LL_SBI_CHECKSUM;
 127 #endif
 128
 129 #ifdef HAVE_LRU_RESIZE_SUPPORT
 130         sbi->ll_flags |= LL_SBI_LRU_RESIZE;
 131 #endif
 132
 133         for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
 134                 cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
 135                                    pp_r_hist.oh_lock);
 136                 cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
 137                                    pp_w_hist.oh_lock);
 138         }
 139
 140         /* metadata statahead is enabled by default */
 141         sbi->ll_sa_max = LL_SA_RPC_DEF;
 142         cfs_atomic_set(&sbi->ll_sa_total, 0);
 143         cfs_atomic_set(&sbi->ll_sa_wrong, 0);
 144         cfs_atomic_set(&sbi->ll_agl_total, 0);
 145         sbi->ll_flags |= LL_SBI_AGL_ENABLED;
 146
 147         RETURN(sbi);
 148 }
 149
 150 void ll_free_sbi(struct super_block *sb)
 151 {
 152         struct ll_sb_info *sbi = ll_s2sbi(sb);
 153         ENTRY;
 154
 155         if (sbi != NULL) {
 156                 cfs_spin_lock(&ll_sb_lock);
 157                 cfs_list_del(&sbi->ll_list);
 158                 cfs_spin_unlock(&ll_sb_lock);
 159                 OBD_FREE(sbi, sizeof(*sbi));
 160         }
 161         EXIT;
 162 }
 163
 164 static struct dentry_operations ll_d_root_ops = {
 165         .d_compare = ll_dcompare,
 166         .d_revalidate = ll_revalidate_nd,
 167 };
 168
 169 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
 170                                     struct vfsmount *mnt)
 171 {
 172         struct inode *root = 0;
 173         struct ll_sb_info *sbi = ll_s2sbi(sb);
 174         struct obd_device *obd;
 175         struct obd_capa *oc = NULL;
 176         struct obd_statfs *osfs = NULL;
 177         struct ptlrpc_request *request = NULL;
 178         struct obd_connect_data *data = NULL;
 179         struct obd_uuid *uuid;
 180         struct md_op_data *op_data;
 181         struct lustre_md lmd;
 182         obd_valid valid;
 183         int size, err, checksum;
 184         ENTRY;
 185
 186         obd = class_name2obd(md);
 187         if (!obd) {
 188                 CERROR("MD %s: not setup or attached\n", md);
 189                 RETURN(-EINVAL);
 190         }
 191
 192         OBD_ALLOC_PTR(data);
 193         if (data == NULL)
 194                 RETURN(-ENOMEM);
 195
 196         OBD_ALLOC_PTR(osfs);
 197         if (osfs == NULL) {
 198                 OBD_FREE_PTR(data);
 199                 RETURN(-ENOMEM);
 200         }
 201
 202         if (proc_lustre_fs_root) {
 203                 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
 204                                                   dt, md);
 205                 if (err < 0)
 206                         CERROR("could not register mount in /proc/fs/lustre\n");
 207         }
 208
 209         /* indicate the features supported by this client */
 210         data->ocd_connect_flags = OBD_CONNECT_IBITS    | OBD_CONNECT_NODEVOH  |
 211                                   OBD_CONNECT_ATTRFID  |
 212                                   OBD_CONNECT_VERSION  | OBD_CONNECT_BRW_SIZE |
 213                                   OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
 214                                   OBD_CONNECT_CANCELSET | OBD_CONNECT_FID     |
 215                                   OBD_CONNECT_AT       | OBD_CONNECT_LOV_V3   |
 216                                   OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR    |
 217                                   OBD_CONNECT_FULL20   | OBD_CONNECT_64BITHASH;
 218
 219         if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
 220                 data->ocd_connect_flags |= OBD_CONNECT_SOM;
 221
 222 #ifdef HAVE_LRU_RESIZE_SUPPORT
 223         if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
 224                 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
 225 #endif
 226 #ifdef CONFIG_FS_POSIX_ACL
 227         data->ocd_connect_flags |= OBD_CONNECT_ACL;
 228 #endif
 229         data->ocd_ibits_known = MDS_INODELOCK_FULL;
 230         data->ocd_version = LUSTRE_VERSION_CODE;
 231
 232         if (sb->s_flags & MS_RDONLY)
 233                 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
 234         if (sbi->ll_flags & LL_SBI_USER_XATTR)
 235                 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
 236
 237 #ifdef HAVE_MS_FLOCK_LOCK
 238         /* force vfs to use lustre handler for flock() calls - bug 10743 */
 239         sb->s_flags |= MS_FLOCK_LOCK;
 240 #endif
 241 #ifdef MS_HAS_NEW_AOPS
 242         sb->s_flags |= MS_HAS_NEW_AOPS;
 243 #endif
 244
 245         if (sbi->ll_flags & LL_SBI_FLOCK)
 246                 sbi->ll_fop = &ll_file_operations_flock;
 247         else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
 248                 sbi->ll_fop = &ll_file_operations;
 249         else
 250                 sbi->ll_fop = &ll_file_operations_noflock;
 251
 252         /* real client */
 253         data->ocd_connect_flags |= OBD_CONNECT_REAL;
 254         if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
 255                 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
 256
 257         data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
 258
 259         err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
 260         if (err == -EBUSY) {
 261                 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
 262                                    "recovery, of which this client is not a "
 263                                    "part. Please wait for recovery to complete,"
 264                                    " abort, or time out.\n", md);
 265                 GOTO(out, err);
 266         } else if (err) {
 267                 CERROR("cannot connect to %s: rc = %d\n", md, err);
 268                 GOTO(out, err);
 269         }
 270
 271         err = obd_fid_init(sbi->ll_md_exp);
 272         if (err) {
 273                 CERROR("Can't init metadata layer FID infrastructure, "
 274                        "rc %d\n", err);
 275                 GOTO(out_md, err);
 276         }
 277
 278         err = obd_statfs(obd, osfs,
 279                          cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 0);
 280         if (err)
 281                 GOTO(out_md_fid, err);
 282
 283         /* This needs to be after statfs to ensure connect has finished.
 284          * Note that "data" does NOT contain the valid connect reply.
 285          * If connecting to a 1.8 server there will be no LMV device, so
 286          * we can access the MDC export directly and exp_connect_flags will
 287          * be non-zero, but if accessing an upgraded 2.1 server it will
 288          * have the correct flags filled in.
 289          * XXX: fill in the LMV exp_connect_flags from MDC(s). */
 290         valid = sbi->ll_md_exp->exp_connect_flags & CLIENT_CONNECT_MDT_REQD;
 291         if (sbi->ll_md_exp->exp_connect_flags != 0 &&
 292             valid != CLIENT_CONNECT_MDT_REQD) {
 293                 char *buf;
 294
 295                 OBD_ALLOC_WAIT(buf, CFS_PAGE_SIZE);
 296                 obd_connect_flags2str(buf, CFS_PAGE_SIZE,
 297                                       valid ^ CLIENT_CONNECT_MDT_REQD, ",");
 298                 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
 299                                    "feature(s) needed for correct operation "
 300                                    "of this client (%s). Please upgrade "
 301                                    "server or downgrade client.\n",
 302                                    sbi->ll_md_exp->exp_obd->obd_name, buf);
 303                 OBD_FREE(buf, CFS_PAGE_SIZE);
 304                 GOTO(out_md, err = -EPROTO);
 305         }
 306
 307         size = sizeof(*data);
 308         err = obd_get_info(sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
 309                            KEY_CONN_DATA,  &size, data, NULL);
 310         if (err) {
 311                 CERROR("Get connect data failed: %d \n", err);
 312                 GOTO(out_md, err);
 313         }
 314
 315         LASSERT(osfs->os_bsize);
 316         sb->s_blocksize = osfs->os_bsize;
 317         sb->s_blocksize_bits = log2(osfs->os_bsize);
 318         sb->s_magic = LL_SUPER_MAGIC;
 319
 320         /* for bug 11559. in $LINUX/fs/read_write.c, function do_sendfile():
 321          *         retval = in_file->f_op->sendfile(...);
 322          *         if (*ppos > max)
 323          *                 retval = -EOVERFLOW;
 324          *
 325          * it will check if *ppos is greater than max. However, max equals to
 326          * s_maxbytes, which is a negative integer in a x86_64 box since loff_t
 327          * has been defined as a signed long long integer in linux kernel. */
 328 #if BITS_PER_LONG == 64
 329         sb->s_maxbytes = PAGE_CACHE_MAXBYTES >> 1;
 330 #else
 331         sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
 332 #endif
 333         sbi->ll_namelen = osfs->os_namelen;
 334         sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
 335
 336         if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
 337             !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
 338                 LCONSOLE_INFO("Disabling user_xattr feature because "
 339                               "it is not supported on the server\n");
 340                 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
 341         }
 342
 343         if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
 344 #ifdef MS_POSIXACL
 345                 sb->s_flags |= MS_POSIXACL;
 346 #endif
 347                 sbi->ll_flags |= LL_SBI_ACL;
 348         } else {
 349                 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
 350 #ifdef MS_POSIXACL
 351                 sb->s_flags &= ~MS_POSIXACL;
 352 #endif
 353                 sbi->ll_flags &= ~LL_SBI_ACL;
 354         }
 355
 356         if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
 357                 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
 358                         sbi->ll_flags |= LL_SBI_RMT_CLIENT;
 359                         LCONSOLE_INFO("client is set as remote by default.\n");
 360                 }
 361         } else {
 362                 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
 363                         sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
 364                         LCONSOLE_INFO("client claims to be remote, but server "
 365                                       "rejected, forced to be local.\n");
 366                 }
 367         }
 368
 369         if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
 370                 LCONSOLE_INFO("client enabled MDS capability!\n");
 371                 sbi->ll_flags |= LL_SBI_MDS_CAPA;
 372         }
 373
 374         if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
 375                 LCONSOLE_INFO("client enabled OSS capability!\n");
 376                 sbi->ll_flags |= LL_SBI_OSS_CAPA;
 377         }
 378
 379         if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
 380                 sbi->ll_flags |= LL_SBI_64BIT_HASH;
 381
 382         if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
 383                 sbi->ll_md_brw_size = data->ocd_brw_size;
 384         else
 385                 sbi->ll_md_brw_size = CFS_PAGE_SIZE;
 386
 387         obd = class_name2obd(dt);
 388         if (!obd) {
 389                 CERROR("DT %s: not setup or attached\n", dt);
 390                 GOTO(out_md_fid, err = -ENODEV);
 391         }
 392
 393         data->ocd_connect_flags = OBD_CONNECT_GRANT     | OBD_CONNECT_VERSION  |
 394                                   OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
 395                                   OBD_CONNECT_CANCELSET | OBD_CONNECT_FID      |
 396                                   OBD_CONNECT_SRVLOCK   | OBD_CONNECT_TRUNCLOCK|
 397                                   OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
 398                                   OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
 399                                   OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
 400                                   OBD_CONNECT_MAXBYTES;
 401
 402         if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
 403                 data->ocd_connect_flags |= OBD_CONNECT_SOM;
 404
 405         if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
 406                 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
 407                  * disabled by default, because it can still be enabled on the
 408                  * fly via /proc. As a consequence, we still need to come to an
 409                  * agreement on the supported algorithms at connect time */
 410                 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
 411
 412                 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
 413                         data->ocd_cksum_types = OBD_CKSUM_ADLER;
 414                 else
 415                         data->ocd_cksum_types = cksum_types_supported();
 416         }
 417
 418 #ifdef HAVE_LRU_RESIZE_SUPPORT
 419         data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
 420 #endif
 421         if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
 422                 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
 423
 424         CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
 425                "ocd_grant: %d\n", data->ocd_connect_flags,
 426                data->ocd_version, data->ocd_grant);
 427
 428         obd->obd_upcall.onu_owner = &sbi->ll_lco;
 429         obd->obd_upcall.onu_upcall = cl_ocd_update;
 430
 431         data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
 432
 433         err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data, NULL);
 434         if (err == -EBUSY) {
 435                 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
 436                                    "recovery, of which this client is not a "
 437                                    "part.  Please wait for recovery to "
 438                                    "complete, abort, or time out.\n", dt);
 439                 GOTO(out_md_fid, err);
 440         } else if (err) {
 441                 CERROR("Cannot connect to %s: rc = %d\n", dt, err);
 442                 GOTO(out_md_fid, err);
 443         }
 444
 445         err = obd_fid_init(sbi->ll_dt_exp);
 446         if (err) {
 447                 CERROR("Can't init data layer FID infrastructure, "
 448                        "rc %d\n", err);
 449                 GOTO(out_dt, err);
 450         }
 451
 452         cfs_mutex_lock(&sbi->ll_lco.lco_lock);
 453         sbi->ll_lco.lco_flags = data->ocd_connect_flags;
 454         sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
 455         sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
 456         cfs_mutex_unlock(&sbi->ll_lco.lco_lock);
 457
 458         fid_zero(&sbi->ll_root_fid);
 459         err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
 460         if (err) {
 461                 CERROR("cannot mds_connect: rc = %d\n", err);
 462                 GOTO(out_lock_cn_cb, err);
 463         }
 464         if (!fid_is_sane(&sbi->ll_root_fid)) {
 465                 CERROR("Invalid root fid during mount\n");
 466                 GOTO(out_lock_cn_cb, err = -EINVAL);
 467         }
 468         CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
 469
 470         sb->s_op = &lustre_super_operations;
 471 #if THREAD_SIZE >= 8192
 472         sb->s_export_op = &lustre_export_operations;
 473 #endif
 474
 475         /* make root inode
 476          * XXX: move this to after cbd setup? */
 477         valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
 478         if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
 479                 valid |= OBD_MD_FLRMTPERM;
 480         else if (sbi->ll_flags & LL_SBI_ACL)
 481                 valid |= OBD_MD_FLACL;
 482
 483         OBD_ALLOC_PTR(op_data);
 484         if (op_data == NULL)
 485                 GOTO(out_lock_cn_cb, err = -ENOMEM);
 486
 487         op_data->op_fid1 = sbi->ll_root_fid;
 488         op_data->op_mode = 0;
 489         op_data->op_capa1 = oc;
 490         op_data->op_valid = valid;
 491
 492         err = md_getattr(sbi->ll_md_exp, op_data, &request);
 493         if (oc)
 494                 capa_put(oc);
 495         OBD_FREE_PTR(op_data);
 496         if (err) {
 497                 CERROR("md_getattr failed for root: rc = %d\n", err);
 498                 GOTO(out_lock_cn_cb, err);
 499         }
 500         err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
 501                                sbi->ll_md_exp, &lmd);
 502         if (err) {
 503                 CERROR("failed to understand root inode md: rc = %d\n", err);
 504                 ptlrpc_req_finished (request);
 505                 GOTO(out_lock_cn_cb, err);
 506         }
 507
 508         LASSERT(fid_is_sane(&sbi->ll_root_fid));
 509         root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid, 0), &lmd);
 510         md_free_lustre_md(sbi->ll_md_exp, &lmd);
 511         ptlrpc_req_finished(request);
 512
 513         if (root == NULL || IS_ERR(root)) {
 514                 if (lmd.lsm)
 515                         obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
 516 #ifdef CONFIG_FS_POSIX_ACL
 517                 if (lmd.posix_acl) {
 518                         posix_acl_release(lmd.posix_acl);
 519                         lmd.posix_acl = NULL;
 520                 }
 521 #endif
 522                 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
 523                 root = NULL;
 524                 CERROR("lustre_lite: bad iget4 for root\n");
 525                 GOTO(out_root, err);
 526         }
 527
 528         err = ll_close_thread_start(&sbi->ll_lcq);
 529         if (err) {
 530                 CERROR("cannot start close thread: rc %d\n", err);
 531                 GOTO(out_root, err);
 532         }
 533
 534 #ifdef CONFIG_FS_POSIX_ACL
 535         if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
 536                 rct_init(&sbi->ll_rct);
 537                 et_init(&sbi->ll_et);
 538         }
 539 #endif
 540
 541         checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
 542         err = obd_set_info_async(sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
 543                                  KEY_CHECKSUM, sizeof(checksum), &checksum,
 544                                  NULL);
 545         cl_sb_init(sb);
 546
 547         sb->s_root = d_alloc_root(root);
 548         sb->s_root->d_op = &ll_d_root_ops;
 549
 550         sbi->ll_sdev_orig = sb->s_dev;
 551
 552         /* We set sb->s_dev equal on all lustre clients in order to support
 553          * NFS export clustering.  NFSD requires that the FSID be the same
 554          * on all clients. */
 555         /* s_dev is also used in lt_compare() to compare two fs, but that is
 556          * only a node-local comparison. */
 557         uuid = obd_get_uuid(sbi->ll_md_exp);
 558         if (uuid != NULL)
 559                 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
 560         sbi->ll_mnt = mnt;
 561
 562         if (data != NULL)
 563                 OBD_FREE_PTR(data);
 564         if (osfs != NULL)
 565                 OBD_FREE_PTR(osfs);
 566
 567         RETURN(err);
 568 out_root:
 569         if (root)
 570                 iput(root);
 571 out_lock_cn_cb:
 572         obd_fid_fini(sbi->ll_dt_exp);
 573 out_dt:
 574         obd_disconnect(sbi->ll_dt_exp);
 575         sbi->ll_dt_exp = NULL;
 576 out_md_fid:
 577         obd_fid_fini(sbi->ll_md_exp);
 578 out_md:
 579         obd_disconnect(sbi->ll_md_exp);
 580         sbi->ll_md_exp = NULL;
 581 out:
 582         if (data != NULL)
 583                 OBD_FREE_PTR(data);
 584         if (osfs != NULL)
 585                 OBD_FREE_PTR(osfs);
 586         lprocfs_unregister_mountpoint(sbi);
 587         return err;
 588 }
 589
 590 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
 591 {
 592         int size, rc;
 593
 594         *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
 595         size = sizeof(int);
 596         rc = obd_get_info(sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
 597                           KEY_MAX_EASIZE, &size, lmmsize, NULL);
 598         if (rc)
 599                 CERROR("Get max mdsize error rc %d \n", rc);
 600
 601         RETURN(rc);
 602 }
 603
 604 void ll_dump_inode(struct inode *inode)
 605 {
 606         struct list_head *tmp;
 607         int dentry_count = 0;
 608
 609         LASSERT(inode != NULL);
 610
 611         list_for_each(tmp, &inode->i_dentry)
 612                 dentry_count++;
 613
 614         CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
 615                inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
 616                inode->i_mode, atomic_read(&inode->i_count), dentry_count);
 617 }
 618
 619 void lustre_dump_dentry(struct dentry *dentry, int recur)
 620 {
 621         struct list_head *tmp;
 622         int subdirs = 0;
 623
 624         LASSERT(dentry != NULL);
 625
 626         list_for_each(tmp, &dentry->d_subdirs)
 627                 subdirs++;
 628
 629         CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
 630                " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
 631                dentry->d_name.len, dentry->d_name.name,
 632                dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
 633                dentry->d_parent, dentry->d_inode, atomic_read(&dentry->d_count),
 634                dentry->d_flags, dentry->d_fsdata, subdirs);
 635         if (dentry->d_inode != NULL)
 636                 ll_dump_inode(dentry->d_inode);
 637
 638         if (recur == 0)
 639                 return;
 640
 641        list_for_each(tmp, &dentry->d_subdirs) {
 642                 struct dentry *d = list_entry(tmp, struct dentry, d_child);
 643                 lustre_dump_dentry(d, recur - 1);
 644         }
 645 }
 646
 647 void client_common_put_super(struct super_block *sb)
 648 {
 649         struct ll_sb_info *sbi = ll_s2sbi(sb);
 650         ENTRY;
 651
 652 #ifdef CONFIG_FS_POSIX_ACL
 653         if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
 654                 et_fini(&sbi->ll_et);
 655                 rct_fini(&sbi->ll_rct);
 656         }
 657 #endif
 658
 659         obd_cancel_unused(sbi->ll_dt_exp, NULL, 0, NULL);
 660
 661         ll_close_thread_shutdown(sbi->ll_lcq);
 662
 663         cl_sb_fini(sb);
 664
 665         cfs_list_del(&sbi->ll_conn_chain);
 666
 667         obd_fid_fini(sbi->ll_dt_exp);
 668         obd_disconnect(sbi->ll_dt_exp);
 669         sbi->ll_dt_exp = NULL;
 670
 671         lprocfs_unregister_mountpoint(sbi);
 672
 673         obd_fid_fini(sbi->ll_md_exp);
 674         obd_disconnect(sbi->ll_md_exp);
 675         sbi->ll_md_exp = NULL;
 676
 677         EXIT;
 678 }
 679
 680 void ll_kill_super(struct super_block *sb)
 681 {
 682         struct ll_sb_info *sbi;
 683
 684         ENTRY;
 685
 686         /* not init sb ?*/
 687         if (!(sb->s_flags & MS_ACTIVE))
 688                 return;
 689
 690         sbi = ll_s2sbi(sb);
 691         /* we need restore s_dev from changed for clustred NFS before put_super
 692          * because new kernels have cached s_dev and change sb->s_dev in
 693          * put_super not affected real removing devices */
 694         if (sbi)
 695                 sb->s_dev = sbi->ll_sdev_orig;
 696         EXIT;
 697 }
 698
 699 char *ll_read_opt(const char *opt, char *data)
 700 {
 701         char *value;
 702         char *retval;
 703         ENTRY;
 704
 705         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 706         if (strncmp(opt, data, strlen(opt)))
 707                 RETURN(NULL);
 708         if ((value = strchr(data, '=')) == NULL)
 709                 RETURN(NULL);
 710
 711         value++;
 712         OBD_ALLOC(retval, strlen(value) + 1);
 713         if (!retval) {
 714                 CERROR("out of memory!\n");
 715                 RETURN(NULL);
 716         }
 717
 718         memcpy(retval, value, strlen(value)+1);
 719         CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
 720         RETURN(retval);
 721 }
 722
 723 static inline int ll_set_opt(const char *opt, char *data, int fl)
 724 {
 725         if (strncmp(opt, data, strlen(opt)) != 0)
 726                 return(0);
 727         else
 728                 return(fl);
 729 }
 730
 731 /* non-client-specific mount options are parsed in lmd_parse */
 732 static int ll_options(char *options, int *flags)
 733 {
 734         int tmp;
 735         char *s1 = options, *s2;
 736         ENTRY;
 737
 738         if (!options)
 739                 RETURN(0);
 740
 741         CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
 742
 743         while (*s1) {
 744                 CDEBUG(D_SUPER, "next opt=%s\n", s1);
 745                 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
 746                 if (tmp) {
 747                         *flags |= tmp;
 748                         goto next;
 749                 }
 750                 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
 751                 if (tmp) {
 752                         *flags |= tmp;
 753                         goto next;
 754                 }
 755                 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
 756                 if (tmp) {
 757                         *flags |= tmp;
 758                         goto next;
 759                 }
 760                 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
 761                 if (tmp) {
 762                         *flags &= ~tmp;
 763                         goto next;
 764                 }
 765                 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
 766                 if (tmp) {
 767                         *flags |= tmp;
 768                         goto next;
 769                 }
 770                 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
 771                 if (tmp) {
 772                         *flags &= ~tmp;
 773                         goto next;
 774                 }
 775 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,5,50,0)
 776                 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
 777                 if (tmp) {
 778                         /* Ignore deprecated mount option.  The client will
 779                          * always try to mount with ACL support, whether this
 780                          * is used depends on whether server supports it. */
 781                         LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
 782                                                   "mount option 'acl'.\n");
 783                         goto next;
 784                 }
 785                 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
 786                 if (tmp) {
 787                         LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
 788                                                   "mount option 'noacl'.\n");
 789                         goto next;
 790                 }
 791 #else
 792 #warning "{no}acl options have been deprecated since 1.8, please remove them"
 793 #endif
 794                 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
 795                 if (tmp) {
 796                         *flags |= tmp;
 797                         goto next;
 798                 }
 799
 800                 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
 801                 if (tmp) {
 802                         *flags |= tmp;
 803                         goto next;
 804                 }
 805                 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
 806                 if (tmp) {
 807                         *flags &= ~tmp;
 808                         goto next;
 809                 }
 810                 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
 811                 if (tmp) {
 812                         *flags |= tmp;
 813                         goto next;
 814                 }
 815                 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
 816                 if (tmp) {
 817                         *flags &= ~tmp;
 818                         goto next;
 819                 }
 820                 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
 821                 if (tmp) {
 822                         *flags |= tmp;
 823                         goto next;
 824                 }
 825                 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
 826                 if (tmp) {
 827                         *flags &= ~tmp;
 828                         goto next;
 829                 }
 830                 tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW);
 831                 if (tmp) {
 832                         *flags |= tmp;
 833                         goto next;
 834                 }
 835                 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
 836                 if (tmp) {
 837                         *flags |= tmp;
 838                         goto next;
 839                 }
 840
 841                 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
 842                                    s1);
 843                 RETURN(-EINVAL);
 844
 845 next:
 846                 /* Find next opt */
 847                 s2 = strchr(s1, ',');
 848                 if (s2 == NULL)
 849                         break;
 850                 s1 = s2 + 1;
 851         }
 852         RETURN(0);
 853 }
 854
 855 void ll_lli_init(struct ll_inode_info *lli)
 856 {
 857         lli->lli_inode_magic = LLI_INODE_MAGIC;
 858         lli->lli_flags = 0;
 859         lli->lli_ioepoch = 0;
 860         cfs_spin_lock_init(&lli->lli_lock);
 861         lli->lli_posix_acl = NULL;
 862         lli->lli_remote_perms = NULL;
 863         cfs_mutex_init(&lli->lli_rmtperm_mutex);
 864         /* Do not set lli_fid, it has been initialized already. */
 865         fid_zero(&lli->lli_pfid);
 866         CFS_INIT_LIST_HEAD(&lli->lli_close_list);
 867         CFS_INIT_LIST_HEAD(&lli->lli_oss_capas);
 868         cfs_atomic_set(&lli->lli_open_count, 0);
 869         lli->lli_mds_capa = NULL;
 870         lli->lli_rmtperm_time = 0;
 871         lli->lli_pending_och = NULL;
 872         lli->lli_mds_read_och = NULL;
 873         lli->lli_mds_write_och = NULL;
 874         lli->lli_mds_exec_och = NULL;
 875         lli->lli_open_fd_read_count = 0;
 876         lli->lli_open_fd_write_count = 0;
 877         lli->lli_open_fd_exec_count = 0;
 878         cfs_mutex_init(&lli->lli_och_mutex);
 879         cfs_spin_lock_init(&lli->lli_agl_lock);
 880         lli->lli_smd = NULL;
 881         lli->lli_clob = NULL;
 882
 883         LASSERT(lli->lli_vfs_inode.i_mode != 0);
 884         if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
 885                 cfs_mutex_init(&lli->lli_readdir_mutex);
 886                 lli->lli_opendir_key = NULL;
 887                 lli->lli_sai = NULL;
 888                 lli->lli_sa_pos = 0;
 889                 lli->lli_def_acl = NULL;
 890                 cfs_spin_lock_init(&lli->lli_sa_lock);
 891                 lli->lli_opendir_pid = 0;
 892         } else {
 893                 cfs_sema_init(&lli->lli_size_sem, 1);
 894                 lli->lli_size_sem_owner = NULL;
 895                 lli->lli_symlink_name = NULL;
 896                 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
 897                 cfs_init_rwsem(&lli->lli_trunc_sem);
 898                 cfs_mutex_init(&lli->lli_write_mutex);
 899                 lli->lli_async_rc = 0;
 900                 lli->lli_write_rc = 0;
 901                 cfs_init_rwsem(&lli->lli_glimpse_sem);
 902                 lli->lli_glimpse_time = 0;
 903                 CFS_INIT_LIST_HEAD(&lli->lli_agl_list);
 904                 lli->lli_agl_index = 0;
 905         }
 906 }
 907
 908 static inline int ll_bdi_register(struct backing_dev_info *bdi)
 909 {
 910 #ifdef HAVE_BDI_REGISTER
 911         static atomic_t ll_bdi_num = ATOMIC_INIT(0);
 912
 913 #ifdef HAVE_BDI_NAME
 914         bdi->name = "lustre";
 915 #endif
 916         return bdi_register(bdi, NULL, "lustre-%d",
 917                             atomic_inc_return(&ll_bdi_num));
 918 #else
 919         return 0;
 920 #endif
 921 }
 922
 923 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
 924 {
 925         struct lustre_profile *lprof = NULL;
 926         struct lustre_sb_info *lsi = s2lsi(sb);
 927         struct ll_sb_info *sbi;
 928         char  *dt = NULL, *md = NULL;
 929         char  *profilenm = get_profile_name(sb);
 930         struct config_llog_instance *cfg;
 931         /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
 932         const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
 933         int    err;
 934         ENTRY;
 935
 936         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 937
 938         OBD_ALLOC_PTR(cfg);
 939         if (cfg == NULL)
 940                 RETURN(-ENOMEM);
 941
 942         cfs_module_get();
 943
 944         /* client additional sb info */
 945         lsi->lsi_llsbi = sbi = ll_init_sbi();
 946         if (!sbi) {
 947                 cfs_module_put(THIS_MODULE);
 948                 OBD_FREE_PTR(cfg);
 949                 RETURN(-ENOMEM);
 950         }
 951
 952         err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
 953         if (err)
 954                 GOTO(out_free, err);
 955
 956         err = ll_bdi_init(&lsi->lsi_bdi);
 957         if (err)
 958                 GOTO(out_free, err);
 959         lsi->lsi_flags |= LSI_BDI_INITIALIZED;
 960         lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
 961         err = ll_bdi_register(&lsi->lsi_bdi);
 962         if (err)
 963                 GOTO(out_free, err);
 964
 965 #ifdef HAVE_SB_BDI
 966         sb->s_bdi = &lsi->lsi_bdi;
 967 #endif
 968
 969         /* Generate a string unique to this super, in case some joker tries
 970            to mount the same fs at two mount points.
 971            Use the address of the super itself.*/
 972         cfg->cfg_instance = sb;
 973         cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
 974
 975         /* set up client obds */
 976         err = lustre_process_log(sb, profilenm, cfg);
 977         if (err < 0) {
 978                 CERROR("Unable to process log: %d\n", err);
 979                 GOTO(out_free, err);
 980         }
 981
 982         /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
 983         lprof = class_get_profile(profilenm);
 984         if (lprof == NULL) {
 985                 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
 986                                    " read from the MGS.  Does that filesystem "
 987                                    "exist?\n", profilenm);
 988                 GOTO(out_free, err = -EINVAL);
 989         }
 990         CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
 991                lprof->lp_md, lprof->lp_dt);
 992
 993         OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
 994         if (!dt)
 995                 GOTO(out_free, err = -ENOMEM);
 996         sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
 997
 998         OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
 999         if (!md)
1000                 GOTO(out_free, err = -ENOMEM);
1001         sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1002
1003         /* connections, registrations, sb setup */
1004         err = client_common_fill_super(sb, md, dt, mnt);
1005
1006 out_free:
1007         if (md)
1008                 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1009         if (dt)
1010                 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1011         if (err)
1012                 ll_put_super(sb);
1013         else
1014                 LCONSOLE_WARN("Client %s has started\n", profilenm);
1015
1016         OBD_FREE_PTR(cfg);
1017         RETURN(err);
1018 } /* ll_fill_super */
1019
1020
1021 void lu_context_keys_dump(void);
1022
1023 void ll_put_super(struct super_block *sb)
1024 {
1025         struct config_llog_instance cfg;
1026         struct obd_device *obd;
1027         struct lustre_sb_info *lsi = s2lsi(sb);
1028         struct ll_sb_info *sbi = ll_s2sbi(sb);
1029         char *profilenm = get_profile_name(sb);
1030         int force = 1, next;
1031         ENTRY;
1032
1033         CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1034
1035         ll_print_capa_stat(sbi);
1036
1037         cfg.cfg_instance = sb;
1038         lustre_end_log(sb, profilenm, &cfg);
1039
1040         if (sbi->ll_md_exp) {
1041                 obd = class_exp2obd(sbi->ll_md_exp);
1042                 if (obd)
1043                         force = obd->obd_force;
1044         }
1045
1046         /* We need to set force before the lov_disconnect in
1047            lustre_common_put_super, since l_d cleans up osc's as well. */
1048         if (force) {
1049                 next = 0;
1050                 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1051                                                      &next)) != NULL) {
1052                         obd->obd_force = force;
1053                 }
1054         }
1055
1056         if (sbi->ll_lcq) {
1057                 /* Only if client_common_fill_super succeeded */
1058                 client_common_put_super(sb);
1059         }
1060
1061         next = 0;
1062         while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1063                 class_manual_cleanup(obd);
1064         }
1065
1066         if (profilenm)
1067                 class_del_profile(profilenm);
1068
1069         if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1070                 ll_bdi_destroy(&lsi->lsi_bdi);
1071                 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1072         }
1073
1074         ll_free_sbi(sb);
1075         lsi->lsi_llsbi = NULL;
1076
1077         lustre_common_put_super(sb);
1078
1079         cl_env_cache_purge(~0);
1080
1081         LCONSOLE_WARN("client %p umount complete\n", cfg.cfg_instance);
1082
1083         cfs_module_put(THIS_MODULE);
1084
1085         EXIT;
1086 } /* client_put_super */
1087
1088 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
1089 {
1090         struct inode *inode = NULL;
1091         /* NOTE: we depend on atomic igrab() -bzzz */
1092         lock_res_and_lock(lock);
1093         if (lock->l_ast_data) {
1094                 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
1095                 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1096                         inode = igrab(lock->l_ast_data);
1097                 } else {
1098                         inode = lock->l_ast_data;
1099                         LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ?  D_INFO :
1100                                          D_WARNING, lock, "l_ast_data %p is "
1101                                          "bogus: magic %08x", lock->l_ast_data,
1102                                          lli->lli_inode_magic);
1103                         inode = NULL;
1104                 }
1105         }
1106         unlock_res_and_lock(lock);
1107         return inode;
1108 }
1109
1110 static int null_if_equal(struct ldlm_lock *lock, void *data)
1111 {
1112         if (data == lock->l_ast_data) {
1113                 lock->l_ast_data = NULL;
1114
1115                 if (lock->l_req_mode != lock->l_granted_mode)
1116                         LDLM_ERROR(lock,"clearing inode with ungranted lock");
1117         }
1118
1119         return LDLM_ITER_CONTINUE;
1120 }
1121
1122 void ll_clear_inode(struct inode *inode)
1123 {
1124         struct ll_inode_info *lli = ll_i2info(inode);
1125         struct ll_sb_info *sbi = ll_i2sbi(inode);
1126         ENTRY;
1127
1128         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1129                inode->i_generation, inode);
1130
1131         if (S_ISDIR(inode->i_mode)) {
1132                 /* these should have been cleared in ll_file_release */
1133                 LASSERT(lli->lli_opendir_key == NULL);
1134                 LASSERT(lli->lli_sai == NULL);
1135                 LASSERT(lli->lli_opendir_pid == 0);
1136         }
1137
1138         ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1139         md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
1140                          null_if_equal, inode);
1141
1142         LASSERT(!lli->lli_open_fd_write_count);
1143         LASSERT(!lli->lli_open_fd_read_count);
1144         LASSERT(!lli->lli_open_fd_exec_count);
1145
1146         if (lli->lli_mds_write_och)
1147                 ll_md_real_close(inode, FMODE_WRITE);
1148         if (lli->lli_mds_exec_och)
1149                 ll_md_real_close(inode, FMODE_EXEC);
1150         if (lli->lli_mds_read_och)
1151                 ll_md_real_close(inode, FMODE_READ);
1152
1153         if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1154                 OBD_FREE(lli->lli_symlink_name,
1155                          strlen(lli->lli_symlink_name) + 1);
1156                 lli->lli_symlink_name = NULL;
1157         }
1158
1159         if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1160                 LASSERT(lli->lli_posix_acl == NULL);
1161                 if (lli->lli_remote_perms) {
1162                         free_rmtperm_hash(lli->lli_remote_perms);
1163                         lli->lli_remote_perms = NULL;
1164                 }
1165         }
1166 #ifdef CONFIG_FS_POSIX_ACL
1167         else if (lli->lli_posix_acl) {
1168                 LASSERT(cfs_atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1169                 LASSERT(lli->lli_remote_perms == NULL);
1170                 posix_acl_release(lli->lli_posix_acl);
1171                 lli->lli_posix_acl = NULL;
1172         }
1173 #endif
1174         lli->lli_inode_magic = LLI_INODE_DEAD;
1175
1176         ll_clear_inode_capas(inode);
1177         if (!S_ISDIR(inode->i_mode))
1178                 LASSERT(cfs_list_empty(&lli->lli_agl_list));
1179
1180         /*
1181          * XXX This has to be done before lsm is freed below, because
1182          * cl_object still uses inode lsm.
1183          */
1184         cl_inode_fini(inode);
1185
1186         if (lli->lli_smd) {
1187                 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1188                 lli->lli_smd = NULL;
1189         }
1190
1191
1192         EXIT;
1193 }
1194
1195 int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
1196                   struct md_open_data **mod)
1197 {
1198         struct lustre_md md;
1199         struct inode *inode = dentry->d_inode;
1200         struct ll_sb_info *sbi = ll_i2sbi(inode);
1201         struct ptlrpc_request *request = NULL;
1202         int rc, ia_valid;
1203         ENTRY;
1204
1205         op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1206                                      LUSTRE_OPC_ANY, NULL);
1207         if (IS_ERR(op_data))
1208                 RETURN(PTR_ERR(op_data));
1209
1210         rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1211                         &request, mod);
1212         if (rc) {
1213                 ptlrpc_req_finished(request);
1214                 if (rc == -ENOENT) {
1215                         inode->i_nlink = 0;
1216                         /* Unlinked special device node? Or just a race?
1217                          * Pretend we done everything. */
1218                         if (!S_ISREG(inode->i_mode) &&
1219                             !S_ISDIR(inode->i_mode)) {
1220                                 ia_valid = op_data->op_attr.ia_valid;
1221                                 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1222                                 rc = simple_setattr(dentry, &op_data->op_attr);
1223                                 op_data->op_attr.ia_valid = ia_valid;
1224                         }
1225                 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1226                         CERROR("md_setattr fails: rc = %d\n", rc);
1227                 }
1228                 RETURN(rc);
1229         }
1230
1231         rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1232                               sbi->ll_md_exp, &md);
1233         if (rc) {
1234                 ptlrpc_req_finished(request);
1235                 RETURN(rc);
1236         }
1237
1238         /* We want to adjust timestamps.
1239          * If there is at least some data in file, we cleared ATTR_SIZE
1240          * to avoid update size, otherwise it is important to do.(SOM case)
1241          * (bug 6196) */
1242         ia_valid = op_data->op_attr.ia_valid;
1243         /* Since we set ATTR_*_SET flags above, and already done permission
1244          * check, So don't let inode_change_ok() check it again.  */
1245         op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1246         rc = simple_setattr(dentry, &op_data->op_attr);
1247         op_data->op_attr.ia_valid = ia_valid;
1248
1249         /* Extract epoch data if obtained. */
1250         op_data->op_handle = md.body->handle;
1251         op_data->op_ioepoch = md.body->ioepoch;
1252
1253         ll_update_inode(inode, &md);
1254         ptlrpc_req_finished(request);
1255
1256         RETURN(rc);
1257 }
1258
1259 /* Close IO epoch and send Size-on-MDS attribute update. */
1260 static int ll_setattr_done_writing(struct inode *inode,
1261                                    struct md_op_data *op_data,
1262                                    struct md_open_data *mod)
1263 {
1264         struct ll_inode_info *lli = ll_i2info(inode);
1265         int rc = 0;
1266         ENTRY;
1267
1268         LASSERT(op_data != NULL);
1269         if (!S_ISREG(inode->i_mode))
1270                 RETURN(0);
1271
1272         CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1273                op_data->op_ioepoch, PFID(&lli->lli_fid));
1274
1275         op_data->op_flags = MF_EPOCH_CLOSE;
1276         ll_done_writing_attr(inode, op_data);
1277         ll_pack_inode2opdata(inode, op_data, NULL);
1278
1279         rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1280         if (rc == -EAGAIN) {
1281                 /* MDS has instructed us to obtain Size-on-MDS attribute
1282                  * from OSTs and send setattr to back to MDS. */
1283                 rc = ll_som_update(inode, op_data);
1284         } else if (rc) {
1285                 CERROR("inode %lu mdc truncate failed: rc = %d\n",
1286                        inode->i_ino, rc);
1287         }
1288         RETURN(rc);
1289 }
1290
1291 static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
1292 {
1293         struct obd_capa *capa;
1294         int rc;
1295
1296         if (attr->ia_valid & ATTR_SIZE)
1297                 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
1298         else
1299                 capa = ll_mdscapa_get(inode);
1300
1301         rc = cl_setattr_ost(inode, attr, capa);
1302
1303         if (attr->ia_valid & ATTR_SIZE)
1304                 ll_truncate_free_capa(capa);
1305         else
1306                 capa_put(capa);
1307
1308         return rc;
1309 }
1310
1311 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1312  * object(s) determine the file size and mtime.  Otherwise, the MDS will
1313  * keep these values until such a time that objects are allocated for it.
1314  * We do the MDS operations first, as it is checking permissions for us.
1315  * We don't to the MDS RPC if there is nothing that we want to store there,
1316  * otherwise there is no harm in updating mtime/atime on the MDS if we are
1317  * going to do an RPC anyways.
1318  *
1319  * If we are doing a truncate, we will send the mtime and ctime updates
1320  * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1321  * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1322  * at the same time.
1323  */
1324 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr)
1325 {
1326         struct inode *inode = dentry->d_inode;
1327         struct ll_inode_info *lli = ll_i2info(inode);
1328         struct lov_stripe_md *lsm = lli->lli_smd;
1329         struct md_op_data *op_data = NULL;
1330         struct md_open_data *mod = NULL;
1331         int ia_valid = attr->ia_valid;
1332         int rc = 0, rc1 = 0;
1333         ENTRY;
1334
1335         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
1336                attr->ia_valid);
1337         ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETATTR, 1);
1338
1339         if (ia_valid & ATTR_SIZE) {
1340                 if (attr->ia_size > ll_file_maxbytes(inode)) {
1341                         CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1342                                attr->ia_size, ll_file_maxbytes(inode));
1343                         RETURN(-EFBIG);
1344                 }
1345
1346                 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1347         }
1348
1349         /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1350         if (ia_valid & TIMES_SET_FLAGS) {
1351                 if (cfs_curproc_fsuid() != inode->i_uid &&
1352                     !cfs_capable(CFS_CAP_FOWNER))
1353                         RETURN(-EPERM);
1354         }
1355
1356         /* We mark all of the fields "set" so MDS/OST does not re-set them */
1357         if (attr->ia_valid & ATTR_CTIME) {
1358                 attr->ia_ctime = CFS_CURRENT_TIME;
1359                 attr->ia_valid |= ATTR_CTIME_SET;
1360         }
1361         if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1362                 attr->ia_atime = CFS_CURRENT_TIME;
1363                 attr->ia_valid |= ATTR_ATIME_SET;
1364         }
1365         if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1366                 attr->ia_mtime = CFS_CURRENT_TIME;
1367                 attr->ia_valid |= ATTR_MTIME_SET;
1368         }
1369
1370         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1371                 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1372                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1373                        cfs_time_current_sec());
1374
1375         /* NB: ATTR_SIZE will only be set after this point if the size
1376          * resides on the MDS, ie, this file has no objects. */
1377         if (lsm)
1378                 attr->ia_valid &= ~ATTR_SIZE;
1379
1380         /* We always do an MDS RPC, even if we're only changing the size;
1381          * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1382
1383         OBD_ALLOC_PTR(op_data);
1384         if (op_data == NULL)
1385                 RETURN(-ENOMEM);
1386
1387         if (!S_ISDIR(inode->i_mode)) {
1388                 if (ia_valid & ATTR_SIZE)
1389                         UP_WRITE_I_ALLOC_SEM(inode);
1390                 UNLOCK_INODE_MUTEX(inode);
1391                 cfs_down_write(&lli->lli_trunc_sem);
1392                 LOCK_INODE_MUTEX(inode);
1393                 if (ia_valid & ATTR_SIZE)
1394                         DOWN_WRITE_I_ALLOC_SEM(inode);
1395         }
1396
1397         memcpy(&op_data->op_attr, attr, sizeof(*attr));
1398
1399         /* Open epoch for truncate. */
1400         if (exp_connect_som(ll_i2mdexp(inode)) &&
1401             (ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
1402                 op_data->op_flags = MF_EPOCH_OPEN;
1403
1404         rc = ll_md_setattr(dentry, op_data, &mod);
1405         if (rc)
1406                 GOTO(out, rc);
1407
1408         ll_ioepoch_open(lli, op_data->op_ioepoch);
1409         if (!lsm || !S_ISREG(inode->i_mode)) {
1410                 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1411                 GOTO(out, rc = 0);
1412         }
1413
1414         if (ia_valid & ATTR_SIZE)
1415                 attr->ia_valid |= ATTR_SIZE;
1416         if (ia_valid & (ATTR_SIZE |
1417                         ATTR_ATIME | ATTR_ATIME_SET |
1418                         ATTR_MTIME | ATTR_MTIME_SET))
1419                 /* on truncate and utimes send attributes to osts, setting
1420                  * mtime/atime to past will be performed under PW 0:EOF extent
1421                  * lock (new_size:EOF for truncate)
1422                  * it may seem excessive to send mtime/atime updates to osts
1423                  * when not setting times to past, but it is necessary due to
1424                  * possible time de-synchronization */
1425                 rc = ll_setattr_ost(inode, attr);
1426         EXIT;
1427 out:
1428         if (op_data) {
1429                 if (op_data->op_ioepoch)
1430                         rc1 = ll_setattr_done_writing(inode, op_data, mod);
1431                 ll_finish_md_op_data(op_data);
1432         }
1433         if (!S_ISDIR(inode->i_mode))
1434                 cfs_up_write(&lli->lli_trunc_sem);
1435         return rc ? rc : rc1;
1436 }
1437
1438 int ll_setattr(struct dentry *de, struct iattr *attr)
1439 {
1440         int mode = de->d_inode->i_mode;
1441
1442         if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1443                               (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1444                 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1445
1446         if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1447                                (ATTR_SIZE|ATTR_MODE)) &&
1448             (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1449              (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1450               !(attr->ia_mode & S_ISGID))))
1451                 attr->ia_valid |= ATTR_FORCE;
1452
1453         if ((mode & S_ISUID) &&
1454             !(attr->ia_mode & S_ISUID) &&
1455             !(attr->ia_valid & ATTR_KILL_SUID))
1456                 attr->ia_valid |= ATTR_KILL_SUID;
1457
1458         if (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1459             !(attr->ia_mode & S_ISGID) &&
1460             !(attr->ia_valid & ATTR_KILL_SGID))
1461                 attr->ia_valid |= ATTR_KILL_SGID;
1462
1463         return ll_setattr_raw(de, attr);
1464 }
1465
1466 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1467                        __u64 max_age, __u32 flags)
1468 {
1469         struct ll_sb_info *sbi = ll_s2sbi(sb);
1470         struct obd_statfs obd_osfs;
1471         int rc;
1472         ENTRY;
1473
1474         rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, flags);
1475         if (rc) {
1476                 CERROR("md_statfs fails: rc = %d\n", rc);
1477                 RETURN(rc);
1478         }
1479
1480         osfs->os_type = sb->s_magic;
1481
1482         CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1483                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1484
1485         if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1486                 flags |= OBD_STATFS_NODELAY;
1487
1488         rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
1489                               &obd_osfs, max_age, flags);
1490         if (rc) {
1491                 CERROR("obd_statfs fails: rc = %d\n", rc);
1492                 RETURN(rc);
1493         }
1494
1495         CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1496                obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1497                obd_osfs.os_files);
1498
1499         osfs->os_bsize = obd_osfs.os_bsize;
1500         osfs->os_blocks = obd_osfs.os_blocks;
1501         osfs->os_bfree = obd_osfs.os_bfree;
1502         osfs->os_bavail = obd_osfs.os_bavail;
1503
1504         /* If we don't have as many objects free on the OST as inodes
1505          * on the MDS, we reduce the total number of inodes to
1506          * compensate, so that the "inodes in use" number is correct.
1507          */
1508         if (obd_osfs.os_ffree < osfs->os_ffree) {
1509                 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1510                         obd_osfs.os_ffree;
1511                 osfs->os_ffree = obd_osfs.os_ffree;
1512         }
1513
1514         RETURN(rc);
1515 }
1516 #ifndef HAVE_STATFS_DENTRY_PARAM
1517 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1518 {
1519 #else
1520 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1521 {
1522         struct super_block *sb = de->d_sb;
1523 #endif
1524         struct obd_statfs osfs;
1525         int rc;
1526
1527         CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1528         ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1529
1530         /* Some amount of caching on the client is allowed */
1531         rc = ll_statfs_internal(sb, &osfs,
1532                                 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1533                                 0);
1534         if (rc)
1535                 return rc;
1536
1537         statfs_unpack(sfs, &osfs);
1538
1539         /* We need to downshift for all 32-bit kernels, because we can't
1540          * tell if the kernel is being called via sys_statfs64() or not.
1541          * Stop before overflowing f_bsize - in which case it is better
1542          * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1543         if (sizeof(long) < 8) {
1544                 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1545                         sfs->f_bsize <<= 1;
1546
1547                         osfs.os_blocks >>= 1;
1548                         osfs.os_bfree >>= 1;
1549                         osfs.os_bavail >>= 1;
1550                 }
1551         }
1552
1553         sfs->f_blocks = osfs.os_blocks;
1554         sfs->f_bfree = osfs.os_bfree;
1555         sfs->f_bavail = osfs.os_bavail;
1556
1557         return 0;
1558 }
1559
1560 void ll_inode_size_lock(struct inode *inode, int lock_lsm)
1561 {
1562         struct ll_inode_info *lli;
1563         struct lov_stripe_md *lsm;
1564
1565         LASSERT(!S_ISDIR(inode->i_mode));
1566
1567         lli = ll_i2info(inode);
1568         LASSERT(lli->lli_size_sem_owner != current);
1569         cfs_down(&lli->lli_size_sem);
1570         LASSERT(lli->lli_size_sem_owner == NULL);
1571         lli->lli_size_sem_owner = current;
1572         lsm = lli->lli_smd;
1573         LASSERTF(lsm != NULL || lock_lsm == 0, "lsm %p, lock_lsm %d\n",
1574                  lsm, lock_lsm);
1575         if (lock_lsm)
1576                 lov_stripe_lock(lsm);
1577 }
1578
1579 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
1580 {
1581         struct ll_inode_info *lli;
1582         struct lov_stripe_md *lsm;
1583
1584         lli = ll_i2info(inode);
1585         lsm = lli->lli_smd;
1586         LASSERTF(lsm != NULL || unlock_lsm == 0, "lsm %p, lock_lsm %d\n",
1587                  lsm, unlock_lsm);
1588         if (unlock_lsm)
1589                 lov_stripe_unlock(lsm);
1590         LASSERT(lli->lli_size_sem_owner == current);
1591         lli->lli_size_sem_owner = NULL;
1592         cfs_up(&lli->lli_size_sem);
1593 }
1594
1595 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1596 {
1597         struct ll_inode_info *lli = ll_i2info(inode);
1598         struct mdt_body *body = md->body;
1599         struct lov_stripe_md *lsm = md->lsm;
1600         struct ll_sb_info *sbi = ll_i2sbi(inode);
1601
1602         LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1603         if (lsm != NULL) {
1604                 LASSERT(S_ISREG(inode->i_mode));
1605
1606                 cfs_mutex_lock(&lli->lli_och_mutex);
1607                 if (lli->lli_smd == NULL) {
1608                         if (lsm->lsm_magic != LOV_MAGIC_V1 &&
1609                             lsm->lsm_magic != LOV_MAGIC_V3) {
1610                                 dump_lsm(D_ERROR, lsm);
1611                                 LBUG();
1612                         }
1613                         CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
1614                                lsm, inode->i_ino, inode->i_generation, inode);
1615                         /* cl_file_inode_init must go before lli_smd or a race
1616                          * is possible where client thinks the file has stripes,
1617                          * but lov raid0 is not setup yet and parallel e.g.
1618                          * glimpse would try to use uninitialized lov */
1619                         cl_file_inode_init(inode, md);
1620                         cfs_spin_lock(&lli->lli_lock);
1621                         lli->lli_smd = lsm;
1622                         cfs_spin_unlock(&lli->lli_lock);
1623                         cfs_mutex_unlock(&lli->lli_och_mutex);
1624                         lli->lli_maxbytes = lsm->lsm_maxbytes;
1625                         if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1626                                 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1627                 } else {
1628                         cfs_mutex_unlock(&lli->lli_och_mutex);
1629                         LASSERT(lli->lli_smd->lsm_magic == lsm->lsm_magic &&
1630                                 lli->lli_smd->lsm_stripe_count ==
1631                                 lsm->lsm_stripe_count);
1632                         if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
1633                                 CERROR("lsm mismatch for inode %ld\n",
1634                                        inode->i_ino);
1635                                 CERROR("lli_smd:\n");
1636                                 dump_lsm(D_ERROR, lli->lli_smd);
1637                                 CERROR("lsm:\n");
1638                                 dump_lsm(D_ERROR, lsm);
1639                                 LBUG();
1640                         }
1641                 }
1642                 if (lli->lli_smd != lsm)
1643                         obd_free_memmd(ll_i2dtexp(inode), &lsm);
1644         }
1645
1646         if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1647                 if (body->valid & OBD_MD_FLRMTPERM)
1648                         ll_update_remote_perm(inode, md->remote_perm);
1649         }
1650 #ifdef CONFIG_FS_POSIX_ACL
1651         else if (body->valid & OBD_MD_FLACL) {
1652                 cfs_spin_lock(&lli->lli_lock);
1653                 if (lli->lli_posix_acl)
1654                         posix_acl_release(lli->lli_posix_acl);
1655                 lli->lli_posix_acl = md->posix_acl;
1656                 cfs_spin_unlock(&lli->lli_lock);
1657         }
1658 #endif
1659         inode->i_ino = cl_fid_build_ino(&body->fid1, 0);
1660         inode->i_generation = cl_fid_build_gen(&body->fid1);
1661
1662         if (body->valid & OBD_MD_FLATIME) {
1663                 if (body->atime > LTIME_S(inode->i_atime))
1664                         LTIME_S(inode->i_atime) = body->atime;
1665                 lli->lli_lvb.lvb_atime = body->atime;
1666         }
1667         if (body->valid & OBD_MD_FLMTIME) {
1668                 if (body->mtime > LTIME_S(inode->i_mtime)) {
1669                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1670                                "to "LPU64"\n", inode->i_ino,
1671                                LTIME_S(inode->i_mtime), body->mtime);
1672                         LTIME_S(inode->i_mtime) = body->mtime;
1673                 }
1674                 lli->lli_lvb.lvb_mtime = body->mtime;
1675         }
1676         if (body->valid & OBD_MD_FLCTIME) {
1677                 if (body->ctime > LTIME_S(inode->i_ctime))
1678                         LTIME_S(inode->i_ctime) = body->ctime;
1679                 lli->lli_lvb.lvb_ctime = body->ctime;
1680         }
1681         if (body->valid & OBD_MD_FLMODE)
1682                 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
1683         if (body->valid & OBD_MD_FLTYPE)
1684                 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
1685         LASSERT(inode->i_mode != 0);
1686         if (S_ISREG(inode->i_mode)) {
1687                 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
1688         } else {
1689                 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1690         }
1691 #ifdef HAVE_INODE_BLKSIZE
1692         inode->i_blksize = 1<<inode->i_blkbits;
1693 #endif
1694         if (body->valid & OBD_MD_FLUID)
1695                 inode->i_uid = body->uid;
1696         if (body->valid & OBD_MD_FLGID)
1697                 inode->i_gid = body->gid;
1698         if (body->valid & OBD_MD_FLFLAGS)
1699                 inode->i_flags = ll_ext_to_inode_flags(body->flags);
1700         if (body->valid & OBD_MD_FLNLINK)
1701                 inode->i_nlink = body->nlink;
1702         if (body->valid & OBD_MD_FLRDEV)
1703                 inode->i_rdev = old_decode_dev(body->rdev);
1704
1705         if (body->valid & OBD_MD_FLID) {
1706                 /* FID shouldn't be changed! */
1707                 if (fid_is_sane(&lli->lli_fid)) {
1708                         LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
1709                                  "Trying to change FID "DFID
1710                                  " to the "DFID", inode %lu/%u(%p)\n",
1711                                  PFID(&lli->lli_fid), PFID(&body->fid1),
1712                                  inode->i_ino, inode->i_generation, inode);
1713                 } else
1714                         lli->lli_fid = body->fid1;
1715         }
1716
1717         LASSERT(fid_seq(&lli->lli_fid) != 0);
1718
1719         if (body->valid & OBD_MD_FLSIZE) {
1720                 if (exp_connect_som(ll_i2mdexp(inode)) &&
1721                     S_ISREG(inode->i_mode) && lli->lli_smd) {
1722                         struct lustre_handle lockh;
1723                         ldlm_mode_t mode;
1724
1725                         /* As it is possible a blocking ast has been processed
1726                          * by this time, we need to check there is an UPDATE
1727                          * lock on the client and set LLIF_MDS_SIZE_LOCK holding
1728                          * it. */
1729                         mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
1730                                                &lockh);
1731                         if (mode) {
1732                                 if (lli->lli_flags & (LLIF_DONE_WRITING |
1733                                                       LLIF_EPOCH_PENDING |
1734                                                       LLIF_SOM_DIRTY)) {
1735                                         CERROR("ino %lu flags %u still has "
1736                                                "size authority! do not trust "
1737                                                "the size got from MDS\n",
1738                                                inode->i_ino, lli->lli_flags);
1739                                 } else {
1740                                         /* Use old size assignment to avoid
1741                                          * deadlock bz14138 & bz14326 */
1742                                         i_size_write(inode, body->size);
1743                                         lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
1744                                 }
1745                                 ldlm_lock_decref(&lockh, mode);
1746                         }
1747                 } else {
1748                         /* Use old size assignment to avoid
1749                          * deadlock bz14138 & bz14326 */
1750                         i_size_write(inode, body->size);
1751
1752                         CDEBUG(D_VFSTRACE, "inode=%lu, updating i_size %llu\n",
1753                                inode->i_ino, (unsigned long long)body->size);
1754                 }
1755
1756                 if (body->valid & OBD_MD_FLBLOCKS)
1757                         inode->i_blocks = body->blocks;
1758         }
1759
1760         if (body->valid & OBD_MD_FLMDSCAPA) {
1761                 LASSERT(md->mds_capa);
1762                 ll_add_capa(inode, md->mds_capa);
1763         }
1764         if (body->valid & OBD_MD_FLOSSCAPA) {
1765                 LASSERT(md->oss_capa);
1766                 ll_add_capa(inode, md->oss_capa);
1767         }
1768 }
1769
1770 void ll_read_inode2(struct inode *inode, void *opaque)
1771 {
1772         struct lustre_md *md = opaque;
1773         struct ll_inode_info *lli = ll_i2info(inode);
1774         ENTRY;
1775
1776         CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1777                PFID(&lli->lli_fid), inode);
1778
1779         LASSERT(!lli->lli_smd);
1780
1781         /* Core attributes from the MDS first.  This is a new inode, and
1782          * the VFS doesn't zero times in the core inode so we have to do
1783          * it ourselves.  They will be overwritten by either MDS or OST
1784          * attributes - we just need to make sure they aren't newer. */
1785         LTIME_S(inode->i_mtime) = 0;
1786         LTIME_S(inode->i_atime) = 0;
1787         LTIME_S(inode->i_ctime) = 0;
1788         inode->i_rdev = 0;
1789         ll_update_inode(inode, md);
1790
1791         /* OIDEBUG(inode); */
1792
1793         /* initializing backing dev info. */
1794         inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
1795
1796
1797         if (S_ISREG(inode->i_mode)) {
1798                 struct ll_sb_info *sbi = ll_i2sbi(inode);
1799                 inode->i_op = &ll_file_inode_operations;
1800                 inode->i_fop = sbi->ll_fop;
1801                 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
1802                 EXIT;
1803         } else if (S_ISDIR(inode->i_mode)) {
1804                 inode->i_op = &ll_dir_inode_operations;
1805                 inode->i_fop = &ll_dir_operations;
1806                 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_dir_aops;
1807                 EXIT;
1808         } else if (S_ISLNK(inode->i_mode)) {
1809                 inode->i_op = &ll_fast_symlink_inode_operations;
1810                 EXIT;
1811         } else {
1812                 inode->i_op = &ll_special_inode_operations;
1813
1814                 init_special_inode(inode, inode->i_mode,
1815                                    kdev_t_to_nr(inode->i_rdev));
1816
1817                 EXIT;
1818         }
1819 }
1820
1821 void ll_delete_inode(struct inode *inode)
1822 {
1823         struct ll_sb_info *sbi = ll_i2sbi(inode);
1824         int rc;
1825         ENTRY;
1826
1827         rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
1828         if (rc)
1829                 CERROR("fid_delete() failed, rc %d\n", rc);
1830
1831         truncate_inode_pages(&inode->i_data, 0);
1832
1833         /* Workaround for LU-118 */
1834         if (inode->i_data.nrpages) {
1835                 TREE_READ_LOCK_IRQ(&inode->i_data);
1836                 TREE_READ_UNLOCK_IRQ(&inode->i_data);
1837                 LASSERTF(inode->i_data.nrpages == 0,
1838                          "inode=%lu/%u(%p) nrpages=%lu, see "
1839                          "http://jira.whamcloud.com/browse/LU-118\n",
1840                          inode->i_ino, inode->i_generation, inode,
1841                          inode->i_data.nrpages);
1842         }
1843         /* Workaround end */
1844
1845 #ifdef HAVE_SBOPS_EVICT_INODE
1846         ll_clear_inode(inode);
1847         end_writeback(inode);
1848 #else
1849         clear_inode(inode);
1850 #endif
1851
1852         EXIT;
1853 }
1854
1855 int ll_iocontrol(struct inode *inode, struct file *file,
1856                  unsigned int cmd, unsigned long arg)
1857 {
1858         struct ll_sb_info *sbi = ll_i2sbi(inode);
1859         struct ptlrpc_request *req = NULL;
1860         int rc, flags = 0;
1861         ENTRY;
1862
1863         switch(cmd) {
1864         case FSFILT_IOC_GETFLAGS: {
1865                 struct mdt_body *body;
1866                 struct md_op_data *op_data;
1867
1868                 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
1869                                              0, 0, LUSTRE_OPC_ANY,
1870                                              NULL);
1871                 if (IS_ERR(op_data))
1872                         RETURN(PTR_ERR(op_data));
1873
1874                 op_data->op_valid = OBD_MD_FLFLAGS;
1875                 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
1876                 ll_finish_md_op_data(op_data);
1877                 if (rc) {
1878                         CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1879                         RETURN(-abs(rc));
1880                 }
1881
1882                 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1883
1884                 flags = body->flags;
1885
1886                 ptlrpc_req_finished(req);
1887
1888                 RETURN(put_user(flags, (int *)arg));
1889         }
1890         case FSFILT_IOC_SETFLAGS: {
1891                 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1892                 struct obd_info oinfo = { { { 0 } } };
1893                 struct md_op_data *op_data;
1894
1895                 if (get_user(flags, (int *)arg))
1896                         RETURN(-EFAULT);
1897
1898                 oinfo.oi_md = lsm;
1899                 OBDO_ALLOC(oinfo.oi_oa);
1900                 if (!oinfo.oi_oa)
1901                         RETURN(-ENOMEM);
1902
1903                 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
1904                                              LUSTRE_OPC_ANY, NULL);
1905                 if (IS_ERR(op_data))
1906                         RETURN(PTR_ERR(op_data));
1907
1908                 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
1909                 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
1910                 rc = md_setattr(sbi->ll_md_exp, op_data,
1911                                 NULL, 0, NULL, 0, &req, NULL);
1912                 ll_finish_md_op_data(op_data);
1913                 ptlrpc_req_finished(req);
1914                 if (rc) {
1915                         OBDO_FREE(oinfo.oi_oa);
1916                         RETURN(rc);
1917                 }
1918
1919                 if (lsm == NULL) {
1920                         OBDO_FREE(oinfo.oi_oa);
1921                         GOTO(update_cache, rc);
1922                 }
1923
1924                 oinfo.oi_oa->o_id = lsm->lsm_object_id;
1925                 oinfo.oi_oa->o_seq = lsm->lsm_object_seq;
1926                 oinfo.oi_oa->o_flags = flags;
1927                 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
1928                                        OBD_MD_FLGROUP;
1929                 oinfo.oi_capa = ll_mdscapa_get(inode);
1930                 obdo_from_inode(oinfo.oi_oa, inode,
1931                                 &ll_i2info(inode)->lli_fid, 0);
1932                 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1933                 capa_put(oinfo.oi_capa);
1934                 OBDO_FREE(oinfo.oi_oa);
1935                 if (rc) {
1936                         if (rc != -EPERM && rc != -EACCES)
1937                                 CERROR("osc_setattr_async fails: rc = %d\n",rc);
1938                         RETURN(rc);
1939                 }
1940
1941                 EXIT;
1942 update_cache:
1943                 inode->i_flags = ll_ext_to_inode_flags(flags);
1944                 return 0;
1945         }
1946         default:
1947                 RETURN(-ENOSYS);
1948         }
1949
1950         RETURN(0);
1951 }
1952
1953 int ll_flush_ctx(struct inode *inode)
1954 {
1955         struct ll_sb_info  *sbi = ll_i2sbi(inode);
1956
1957         CDEBUG(D_SEC, "flush context for user %d\n", cfs_curproc_uid());
1958
1959         obd_set_info_async(sbi->ll_md_exp,
1960                            sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
1961                            0, NULL, NULL);
1962         obd_set_info_async(sbi->ll_dt_exp,
1963                            sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
1964                            0, NULL, NULL);
1965         return 0;
1966 }
1967
1968 /* umount -f client means force down, don't save state */
1969 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1970 void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
1971 {
1972         struct super_block *sb = vfsmnt->mnt_sb;
1973 #else
1974 void ll_umount_begin(struct super_block *sb)
1975 {
1976 #endif
1977         struct lustre_sb_info *lsi = s2lsi(sb);
1978         struct ll_sb_info *sbi = ll_s2sbi(sb);
1979         struct obd_device *obd;
1980         struct obd_ioctl_data *ioc_data;
1981         ENTRY;
1982
1983 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1984         if (!(flags & MNT_FORCE)) {
1985                 EXIT;
1986                 return;
1987         }
1988 #endif
1989
1990         /* Tell the MGC we got umount -f */
1991         lsi->lsi_flags |= LSI_UMOUNT_FORCE;
1992
1993         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
1994                sb->s_count, atomic_read(&sb->s_active));
1995
1996         obd = class_exp2obd(sbi->ll_md_exp);
1997         if (obd == NULL) {
1998                 CERROR("Invalid MDC connection handle "LPX64"\n",
1999                        sbi->ll_md_exp->exp_handle.h_cookie);
2000                 EXIT;
2001                 return;
2002         }
2003         obd->obd_force = 1;
2004
2005         obd = class_exp2obd(sbi->ll_dt_exp);
2006         if (obd == NULL) {
2007                 CERROR("Invalid LOV connection handle "LPX64"\n",
2008                        sbi->ll_dt_exp->exp_handle.h_cookie);
2009                 EXIT;
2010                 return;
2011         }
2012         obd->obd_force = 1;
2013
2014         OBD_ALLOC_PTR(ioc_data);
2015         if (ioc_data) {
2016                 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2017                               sizeof ioc_data, ioc_data, NULL);
2018
2019                 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2020                               sizeof ioc_data, ioc_data, NULL);
2021
2022                 OBD_FREE_PTR(ioc_data);
2023         }
2024
2025
2026         /* Really, we'd like to wait until there are no requests outstanding,
2027          * and then continue.  For now, we just invalidate the requests,
2028          * schedule() and sleep one second if needed, and hope.
2029          */
2030         cfs_schedule();
2031 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
2032         if (atomic_read(&vfsmnt->mnt_count) > 2) {
2033                 cfs_schedule_timeout_and_set_state(CFS_TASK_INTERRUPTIBLE,
2034                                                    cfs_time_seconds(1));
2035                 if (atomic_read(&vfsmnt->mnt_count) > 2)
2036                         LCONSOLE_WARN("Mount still busy with %d refs! You "
2037                                       "may try to umount it a bit later\n",
2038                                       atomic_read(&vfsmnt->mnt_count));
2039         }
2040 #endif
2041
2042         EXIT;
2043 }
2044
2045 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2046 {
2047         struct ll_sb_info *sbi = ll_s2sbi(sb);
2048         int err;
2049         __u32 read_only;
2050
2051         if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2052                 read_only = *flags & MS_RDONLY;
2053                 err = obd_set_info_async(sbi->ll_md_exp,
2054                                          sizeof(KEY_READ_ONLY),
2055                                          KEY_READ_ONLY, sizeof(read_only),
2056                                          &read_only, NULL);
2057                 if (err) {
2058                         CERROR("Failed to change the read-only flag during "
2059                                "remount: %d\n", err);
2060                         return err;
2061                 }
2062
2063                 if (read_only)
2064                         sb->s_flags |= MS_RDONLY;
2065                 else
2066                         sb->s_flags &= ~MS_RDONLY;
2067         }
2068         return 0;
2069 }
2070
2071 int ll_prep_inode(struct inode **inode,
2072                   struct ptlrpc_request *req,
2073                   struct super_block *sb)
2074 {
2075         struct ll_sb_info *sbi = NULL;
2076         struct lustre_md md;
2077         int rc;
2078         ENTRY;
2079
2080         LASSERT(*inode || sb);
2081         sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2082         rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2083                               sbi->ll_md_exp, &md);
2084         if (rc)
2085                 RETURN(rc);
2086
2087         if (*inode) {
2088                 ll_update_inode(*inode, &md);
2089         } else {
2090                 LASSERT(sb != NULL);
2091
2092                 /*
2093                  * At this point server returns to client's same fid as client
2094                  * generated for creating. So using ->fid1 is okay here.
2095                  */
2096                 LASSERT(fid_is_sane(&md.body->fid1));
2097
2098                 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1, 0), &md);
2099                 if (*inode == NULL || IS_ERR(*inode)) {
2100                         if (md.lsm)
2101                                 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2102 #ifdef CONFIG_FS_POSIX_ACL
2103                         if (md.posix_acl) {
2104                                 posix_acl_release(md.posix_acl);
2105                                 md.posix_acl = NULL;
2106                         }
2107 #endif
2108                         rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2109                         *inode = NULL;
2110                         CERROR("new_inode -fatal: rc %d\n", rc);
2111                         GOTO(out, rc);
2112                 }
2113         }
2114
2115 out:
2116         md_free_lustre_md(sbi->ll_md_exp, &md);
2117         RETURN(rc);
2118 }
2119
2120 int ll_obd_statfs(struct inode *inode, void *arg)
2121 {
2122         struct ll_sb_info *sbi = NULL;
2123         struct obd_export *exp;
2124         char *buf = NULL;
2125         struct obd_ioctl_data *data = NULL;
2126         __u32 type;
2127         int len = 0, rc;
2128
2129         if (!inode || !(sbi = ll_i2sbi(inode)))
2130                 GOTO(out_statfs, rc = -EINVAL);
2131
2132         rc = obd_ioctl_getdata(&buf, &len, arg);
2133         if (rc)
2134                 GOTO(out_statfs, rc);
2135
2136         data = (void*)buf;
2137         if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2138             !data->ioc_pbuf1 || !data->ioc_pbuf2)
2139                 GOTO(out_statfs, rc = -EINVAL);
2140
2141         if (data->ioc_inllen1 != sizeof(__u32) ||
2142             data->ioc_inllen2 != sizeof(__u32) ||
2143             data->ioc_plen1 != sizeof(struct obd_statfs) ||
2144             data->ioc_plen2 != sizeof(struct obd_uuid))
2145                 GOTO(out_statfs, rc = -EINVAL);
2146
2147         memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2148         if (type == LL_STATFS_LMV)
2149                 exp = sbi->ll_md_exp;
2150         else if (type == LL_STATFS_LOV)
2151                 exp = sbi->ll_dt_exp;
2152         else
2153                 GOTO(out_statfs, rc = -ENODEV);
2154
2155         rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2156         if (rc)
2157                 GOTO(out_statfs, rc);
2158 out_statfs:
2159         if (buf)
2160                 obd_ioctl_freedata(buf, len);
2161         return rc;
2162 }
2163
2164 int ll_process_config(struct lustre_cfg *lcfg)
2165 {
2166         char *ptr;
2167         void *sb;
2168         struct lprocfs_static_vars lvars;
2169         unsigned long x;
2170         int rc = 0;
2171
2172         lprocfs_llite_init_vars(&lvars);
2173
2174         /* The instance name contains the sb: lustre-client-aacfe000 */
2175         ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2176         if (!ptr || !*(++ptr))
2177                 return -EINVAL;
2178         if (sscanf(ptr, "%lx", &x) != 1)
2179                 return -EINVAL;
2180         sb = (void *)x;
2181         /* This better be a real Lustre superblock! */
2182         LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2183
2184         /* Note we have not called client_common_fill_super yet, so
2185            proc fns must be able to handle that! */
2186         rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
2187                                       lcfg, sb);
2188         if (rc > 0)
2189                 rc = 0;
2190         return(rc);
2191 }
2192
2193 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2194 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2195                                        struct inode *i1, struct inode *i2,
2196                                        const char *name, int namelen,
2197                                        int mode, __u32 opc, void *data)
2198 {
2199         LASSERT(i1 != NULL);
2200
2201         if (namelen > ll_i2sbi(i1)->ll_namelen)
2202                 return ERR_PTR(-ENAMETOOLONG);
2203
2204         if (op_data == NULL)
2205                 OBD_ALLOC_PTR(op_data);
2206
2207         if (op_data == NULL)
2208                 return ERR_PTR(-ENOMEM);
2209
2210         ll_i2gids(op_data->op_suppgids, i1, i2);
2211         op_data->op_fid1 = *ll_inode2fid(i1);
2212         op_data->op_capa1 = ll_mdscapa_get(i1);
2213
2214         if (i2) {
2215                 op_data->op_fid2 = *ll_inode2fid(i2);
2216                 op_data->op_capa2 = ll_mdscapa_get(i2);
2217         } else {
2218                 fid_zero(&op_data->op_fid2);
2219                 op_data->op_capa2 = NULL;
2220         }
2221
2222         op_data->op_name = name;
2223         op_data->op_namelen = namelen;
2224         op_data->op_mode = mode;
2225         op_data->op_mod_time = cfs_time_current_sec();
2226         op_data->op_fsuid = cfs_curproc_fsuid();
2227         op_data->op_fsgid = cfs_curproc_fsgid();
2228         op_data->op_cap = cfs_curproc_cap_pack();
2229         op_data->op_bias = MDS_CHECK_SPLIT;
2230         op_data->op_opc = opc;
2231         op_data->op_mds = 0;
2232         op_data->op_data = data;
2233
2234         /* If the file is being opened after mknod() (normally due to NFS)
2235          * try to use the default stripe data from parent directory for
2236          * allocating OST objects.  Try to pass the parent FID to MDS. */
2237         if (opc == LUSTRE_OPC_CREATE && i1 == i2 && S_ISREG(i2->i_mode) &&
2238             ll_i2info(i2)->lli_smd == NULL) {
2239                 struct ll_inode_info *lli = ll_i2info(i2);
2240
2241                 cfs_spin_lock(&lli->lli_lock);
2242                 if (likely(lli->lli_smd == NULL &&
2243                            !fid_is_zero(&lli->lli_pfid)))
2244                         op_data->op_fid1 = lli->lli_pfid;
2245                 cfs_spin_unlock(&lli->lli_lock);
2246                 /** We ignore parent's capability temporary. */
2247         }
2248
2249         return op_data;
2250 }
2251
2252 void ll_finish_md_op_data(struct md_op_data *op_data)
2253 {
2254         capa_put(op_data->op_capa1);
2255         capa_put(op_data->op_capa2);
2256         OBD_FREE_PTR(op_data);
2257 }
2258
2259 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2260 {
2261         struct ll_sb_info *sbi;
2262
2263         LASSERT((seq != NULL) && (vfs != NULL));
2264         sbi = ll_s2sbi(vfs->mnt_sb);
2265
2266         if (sbi->ll_flags & LL_SBI_NOLCK)
2267                 seq_puts(seq, ",nolock");
2268
2269         if (sbi->ll_flags & LL_SBI_FLOCK)
2270                 seq_puts(seq, ",flock");
2271
2272         if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2273                 seq_puts(seq, ",localflock");
2274
2275         if (sbi->ll_flags & LL_SBI_USER_XATTR)
2276                 seq_puts(seq, ",user_xattr");
2277
2278         if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2279                 seq_puts(seq, ",lazystatfs");
2280
2281         RETURN(0);
2282 }
2283
2284 /**
2285  * Get obd name by cmd, and copy out to user space
2286  */
2287 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2288 {
2289         struct ll_sb_info *sbi = ll_i2sbi(inode);
2290         struct obd_device *obd;
2291         ENTRY;
2292
2293         if (cmd == OBD_IOC_GETDTNAME)
2294                 obd = class_exp2obd(sbi->ll_dt_exp);
2295         else if (cmd == OBD_IOC_GETMDNAME)
2296                 obd = class_exp2obd(sbi->ll_md_exp);
2297         else
2298                 RETURN(-EINVAL);
2299
2300         if (!obd)
2301                 RETURN(-ENOENT);
2302
2303         if (cfs_copy_to_user((void *)arg, obd->obd_name,
2304                              strlen(obd->obd_name) + 1))
2305                 RETURN(-EFAULT);
2306
2307         RETURN(0);
2308 }