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         sbi->ll_flags |= LL_SBI_VERBOSE;
 126 #ifdef ENABLE_CHECKSUM
 127         sbi->ll_flags |= LL_SBI_CHECKSUM;
 128 #endif
 129
 130 #ifdef HAVE_LRU_RESIZE_SUPPORT
 131         sbi->ll_flags |= LL_SBI_LRU_RESIZE;
 132 #endif
 133
 134         for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
 135                 cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
 136                                    pp_r_hist.oh_lock);
 137                 cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
 138                                    pp_w_hist.oh_lock);
 139         }
 140
 141         /* metadata statahead is enabled by default */
 142         sbi->ll_sa_max = LL_SA_RPC_DEF;
 143         cfs_atomic_set(&sbi->ll_sa_total, 0);
 144         cfs_atomic_set(&sbi->ll_sa_wrong, 0);
 145         cfs_atomic_set(&sbi->ll_agl_total, 0);
 146         sbi->ll_flags |= LL_SBI_AGL_ENABLED;
 147
 148         RETURN(sbi);
 149 }
 150
 151 void ll_free_sbi(struct super_block *sb)
 152 {
 153         struct ll_sb_info *sbi = ll_s2sbi(sb);
 154         ENTRY;
 155
 156         if (sbi != NULL) {
 157                 cfs_spin_lock(&ll_sb_lock);
 158                 cfs_list_del(&sbi->ll_list);
 159                 cfs_spin_unlock(&ll_sb_lock);
 160                 OBD_FREE(sbi, sizeof(*sbi));
 161         }
 162         EXIT;
 163 }
 164
 165 static struct dentry_operations ll_d_root_ops = {
 166         .d_compare = ll_dcompare,
 167         .d_revalidate = ll_revalidate_nd,
 168 };
 169
 170 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
 171                                     struct vfsmount *mnt)
 172 {
 173         struct inode *root = 0;
 174         struct ll_sb_info *sbi = ll_s2sbi(sb);
 175         struct obd_device *obd;
 176         struct obd_capa *oc = NULL;
 177         struct obd_statfs *osfs = NULL;
 178         struct ptlrpc_request *request = NULL;
 179         struct obd_connect_data *data = NULL;
 180         struct obd_uuid *uuid;
 181         struct md_op_data *op_data;
 182         struct lustre_md lmd;
 183         obd_valid valid;
 184         int size, err, checksum;
 185         ENTRY;
 186
 187         obd = class_name2obd(md);
 188         if (!obd) {
 189                 CERROR("MD %s: not setup or attached\n", md);
 190                 RETURN(-EINVAL);
 191         }
 192
 193         OBD_ALLOC_PTR(data);
 194         if (data == NULL)
 195                 RETURN(-ENOMEM);
 196
 197         OBD_ALLOC_PTR(osfs);
 198         if (osfs == NULL) {
 199                 OBD_FREE_PTR(data);
 200                 RETURN(-ENOMEM);
 201         }
 202
 203         if (proc_lustre_fs_root) {
 204                 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
 205                                                   dt, md);
 206                 if (err < 0)
 207                         CERROR("could not register mount in /proc/fs/lustre\n");
 208         }
 209
 210         /* indicate the features supported by this client */
 211         data->ocd_connect_flags = OBD_CONNECT_IBITS    | OBD_CONNECT_NODEVOH  |
 212                                   OBD_CONNECT_ATTRFID  |
 213                                   OBD_CONNECT_VERSION  | OBD_CONNECT_BRW_SIZE |
 214                                   OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
 215                                   OBD_CONNECT_CANCELSET | OBD_CONNECT_FID     |
 216                                   OBD_CONNECT_AT       | OBD_CONNECT_LOV_V3   |
 217                                   OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR    |
 218                                   OBD_CONNECT_FULL20   | OBD_CONNECT_64BITHASH;
 219
 220         if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
 221                 data->ocd_connect_flags |= OBD_CONNECT_SOM;
 222
 223 #ifdef HAVE_LRU_RESIZE_SUPPORT
 224         if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
 225                 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
 226 #endif
 227 #ifdef CONFIG_FS_POSIX_ACL
 228         data->ocd_connect_flags |= OBD_CONNECT_ACL;
 229 #endif
 230         data->ocd_ibits_known = MDS_INODELOCK_FULL;
 231         data->ocd_version = LUSTRE_VERSION_CODE;
 232
 233         if (sb->s_flags & MS_RDONLY)
 234                 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
 235         if (sbi->ll_flags & LL_SBI_USER_XATTR)
 236                 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
 237
 238 #ifdef HAVE_MS_FLOCK_LOCK
 239         /* force vfs to use lustre handler for flock() calls - bug 10743 */
 240         sb->s_flags |= MS_FLOCK_LOCK;
 241 #endif
 242 #ifdef MS_HAS_NEW_AOPS
 243         sb->s_flags |= MS_HAS_NEW_AOPS;
 244 #endif
 245
 246         if (sbi->ll_flags & LL_SBI_FLOCK)
 247                 sbi->ll_fop = &ll_file_operations_flock;
 248         else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
 249                 sbi->ll_fop = &ll_file_operations;
 250         else
 251                 sbi->ll_fop = &ll_file_operations_noflock;
 252
 253         /* real client */
 254         data->ocd_connect_flags |= OBD_CONNECT_REAL;
 255         if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
 256                 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
 257
 258         data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
 259
 260         err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
 261         if (err == -EBUSY) {
 262                 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
 263                                    "recovery, of which this client is not a "
 264                                    "part. Please wait for recovery to complete,"
 265                                    " abort, or time out.\n", md);
 266                 GOTO(out, err);
 267         } else if (err) {
 268                 CERROR("cannot connect to %s: rc = %d\n", md, err);
 269                 GOTO(out, err);
 270         }
 271
 272         err = obd_fid_init(sbi->ll_md_exp);
 273         if (err) {
 274                 CERROR("Can't init metadata layer FID infrastructure, "
 275                        "rc %d\n", err);
 276                 GOTO(out_md, err);
 277         }
 278
 279         err = obd_statfs(obd, osfs,
 280                          cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 0);
 281         if (err)
 282                 GOTO(out_md_fid, err);
 283
 284         /* This needs to be after statfs to ensure connect has finished.
 285          * Note that "data" does NOT contain the valid connect reply.
 286          * If connecting to a 1.8 server there will be no LMV device, so
 287          * we can access the MDC export directly and exp_connect_flags will
 288          * be non-zero, but if accessing an upgraded 2.1 server it will
 289          * have the correct flags filled in.
 290          * XXX: fill in the LMV exp_connect_flags from MDC(s). */
 291         valid = sbi->ll_md_exp->exp_connect_flags & CLIENT_CONNECT_MDT_REQD;
 292         if (sbi->ll_md_exp->exp_connect_flags != 0 &&
 293             valid != CLIENT_CONNECT_MDT_REQD) {
 294                 char *buf;
 295
 296                 OBD_ALLOC_WAIT(buf, CFS_PAGE_SIZE);
 297                 obd_connect_flags2str(buf, CFS_PAGE_SIZE,
 298                                       valid ^ CLIENT_CONNECT_MDT_REQD, ",");
 299                 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
 300                                    "feature(s) needed for correct operation "
 301                                    "of this client (%s). Please upgrade "
 302                                    "server or downgrade client.\n",
 303                                    sbi->ll_md_exp->exp_obd->obd_name, buf);
 304                 OBD_FREE(buf, CFS_PAGE_SIZE);
 305                 GOTO(out_md, err = -EPROTO);
 306         }
 307
 308         size = sizeof(*data);
 309         err = obd_get_info(sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
 310                            KEY_CONN_DATA,  &size, data, NULL);
 311         if (err) {
 312                 CERROR("Get connect data failed: %d \n", err);
 313                 GOTO(out_md, err);
 314         }
 315
 316         LASSERT(osfs->os_bsize);
 317         sb->s_blocksize = osfs->os_bsize;
 318         sb->s_blocksize_bits = log2(osfs->os_bsize);
 319         sb->s_magic = LL_SUPER_MAGIC;
 320         sb->s_maxbytes = MAX_LFS_FILESIZE;
 321         sbi->ll_namelen = osfs->os_namelen;
 322         sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
 323
 324         if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
 325             !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
 326                 LCONSOLE_INFO("Disabling user_xattr feature because "
 327                               "it is not supported on the server\n");
 328                 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
 329         }
 330
 331         if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
 332 #ifdef MS_POSIXACL
 333                 sb->s_flags |= MS_POSIXACL;
 334 #endif
 335                 sbi->ll_flags |= LL_SBI_ACL;
 336         } else {
 337                 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
 338 #ifdef MS_POSIXACL
 339                 sb->s_flags &= ~MS_POSIXACL;
 340 #endif
 341                 sbi->ll_flags &= ~LL_SBI_ACL;
 342         }
 343
 344         if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
 345                 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
 346                         sbi->ll_flags |= LL_SBI_RMT_CLIENT;
 347                         LCONSOLE_INFO("client is set as remote by default.\n");
 348                 }
 349         } else {
 350                 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
 351                         sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
 352                         LCONSOLE_INFO("client claims to be remote, but server "
 353                                       "rejected, forced to be local.\n");
 354                 }
 355         }
 356
 357         if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
 358                 LCONSOLE_INFO("client enabled MDS capability!\n");
 359                 sbi->ll_flags |= LL_SBI_MDS_CAPA;
 360         }
 361
 362         if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
 363                 LCONSOLE_INFO("client enabled OSS capability!\n");
 364                 sbi->ll_flags |= LL_SBI_OSS_CAPA;
 365         }
 366
 367         if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
 368                 sbi->ll_flags |= LL_SBI_64BIT_HASH;
 369
 370         if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
 371                 sbi->ll_md_brw_size = data->ocd_brw_size;
 372         else
 373                 sbi->ll_md_brw_size = CFS_PAGE_SIZE;
 374
 375         obd = class_name2obd(dt);
 376         if (!obd) {
 377                 CERROR("DT %s: not setup or attached\n", dt);
 378                 GOTO(out_md_fid, err = -ENODEV);
 379         }
 380
 381         data->ocd_connect_flags = OBD_CONNECT_GRANT     | OBD_CONNECT_VERSION  |
 382                                   OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
 383                                   OBD_CONNECT_CANCELSET | OBD_CONNECT_FID      |
 384                                   OBD_CONNECT_SRVLOCK   | OBD_CONNECT_TRUNCLOCK|
 385                                   OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
 386                                   OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
 387                                   OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
 388                                   OBD_CONNECT_MAXBYTES;
 389
 390         if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
 391                 data->ocd_connect_flags |= OBD_CONNECT_SOM;
 392
 393         if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
 394                 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
 395                  * disabled by default, because it can still be enabled on the
 396                  * fly via /proc. As a consequence, we still need to come to an
 397                  * agreement on the supported algorithms at connect time */
 398                 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
 399
 400                 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
 401                         data->ocd_cksum_types = OBD_CKSUM_ADLER;
 402                 else
 403                         data->ocd_cksum_types = cksum_types_supported();
 404         }
 405
 406 #ifdef HAVE_LRU_RESIZE_SUPPORT
 407         data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
 408 #endif
 409         if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
 410                 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
 411
 412         CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
 413                "ocd_grant: %d\n", data->ocd_connect_flags,
 414                data->ocd_version, data->ocd_grant);
 415
 416         obd->obd_upcall.onu_owner = &sbi->ll_lco;
 417         obd->obd_upcall.onu_upcall = cl_ocd_update;
 418
 419         data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
 420
 421         err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data, NULL);
 422         if (err == -EBUSY) {
 423                 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
 424                                    "recovery, of which this client is not a "
 425                                    "part.  Please wait for recovery to "
 426                                    "complete, abort, or time out.\n", dt);
 427                 GOTO(out_md_fid, err);
 428         } else if (err) {
 429                 CERROR("Cannot connect to %s: rc = %d\n", dt, err);
 430                 GOTO(out_md_fid, err);
 431         }
 432
 433         err = obd_fid_init(sbi->ll_dt_exp);
 434         if (err) {
 435                 CERROR("Can't init data layer FID infrastructure, "
 436                        "rc %d\n", err);
 437                 GOTO(out_dt, err);
 438         }
 439
 440         cfs_mutex_lock(&sbi->ll_lco.lco_lock);
 441         sbi->ll_lco.lco_flags = data->ocd_connect_flags;
 442         sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
 443         sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
 444         cfs_mutex_unlock(&sbi->ll_lco.lco_lock);
 445
 446         fid_zero(&sbi->ll_root_fid);
 447         err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
 448         if (err) {
 449                 CERROR("cannot mds_connect: rc = %d\n", err);
 450                 GOTO(out_lock_cn_cb, err);
 451         }
 452         if (!fid_is_sane(&sbi->ll_root_fid)) {
 453                 CERROR("Invalid root fid during mount\n");
 454                 GOTO(out_lock_cn_cb, err = -EINVAL);
 455         }
 456         CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
 457
 458         sb->s_op = &lustre_super_operations;
 459 #if THREAD_SIZE >= 8192
 460         sb->s_export_op = &lustre_export_operations;
 461 #endif
 462
 463         /* make root inode
 464          * XXX: move this to after cbd setup? */
 465         valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
 466         if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
 467                 valid |= OBD_MD_FLRMTPERM;
 468         else if (sbi->ll_flags & LL_SBI_ACL)
 469                 valid |= OBD_MD_FLACL;
 470
 471         OBD_ALLOC_PTR(op_data);
 472         if (op_data == NULL)
 473                 GOTO(out_lock_cn_cb, err = -ENOMEM);
 474
 475         op_data->op_fid1 = sbi->ll_root_fid;
 476         op_data->op_mode = 0;
 477         op_data->op_capa1 = oc;
 478         op_data->op_valid = valid;
 479
 480         err = md_getattr(sbi->ll_md_exp, op_data, &request);
 481         if (oc)
 482                 capa_put(oc);
 483         OBD_FREE_PTR(op_data);
 484         if (err) {
 485                 CERROR("md_getattr failed for root: rc = %d\n", err);
 486                 GOTO(out_lock_cn_cb, err);
 487         }
 488         err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
 489                                sbi->ll_md_exp, &lmd);
 490         if (err) {
 491                 CERROR("failed to understand root inode md: rc = %d\n", err);
 492                 ptlrpc_req_finished (request);
 493                 GOTO(out_lock_cn_cb, err);
 494         }
 495
 496         LASSERT(fid_is_sane(&sbi->ll_root_fid));
 497         root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid, 0), &lmd);
 498         md_free_lustre_md(sbi->ll_md_exp, &lmd);
 499         ptlrpc_req_finished(request);
 500
 501         if (root == NULL || IS_ERR(root)) {
 502                 if (lmd.lsm)
 503                         obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
 504 #ifdef CONFIG_FS_POSIX_ACL
 505                 if (lmd.posix_acl) {
 506                         posix_acl_release(lmd.posix_acl);
 507                         lmd.posix_acl = NULL;
 508                 }
 509 #endif
 510                 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
 511                 root = NULL;
 512                 CERROR("lustre_lite: bad iget4 for root\n");
 513                 GOTO(out_root, err);
 514         }
 515
 516         err = ll_close_thread_start(&sbi->ll_lcq);
 517         if (err) {
 518                 CERROR("cannot start close thread: rc %d\n", err);
 519                 GOTO(out_root, err);
 520         }
 521
 522 #ifdef CONFIG_FS_POSIX_ACL
 523         if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
 524                 rct_init(&sbi->ll_rct);
 525                 et_init(&sbi->ll_et);
 526         }
 527 #endif
 528
 529         checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
 530         err = obd_set_info_async(sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
 531                                  KEY_CHECKSUM, sizeof(checksum), &checksum,
 532                                  NULL);
 533         cl_sb_init(sb);
 534
 535         sb->s_root = d_alloc_root(root);
 536         sb->s_root->d_op = &ll_d_root_ops;
 537
 538         sbi->ll_sdev_orig = sb->s_dev;
 539
 540         /* We set sb->s_dev equal on all lustre clients in order to support
 541          * NFS export clustering.  NFSD requires that the FSID be the same
 542          * on all clients. */
 543         /* s_dev is also used in lt_compare() to compare two fs, but that is
 544          * only a node-local comparison. */
 545         uuid = obd_get_uuid(sbi->ll_md_exp);
 546         if (uuid != NULL)
 547                 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
 548         sbi->ll_mnt = mnt;
 549
 550         if (data != NULL)
 551                 OBD_FREE_PTR(data);
 552         if (osfs != NULL)
 553                 OBD_FREE_PTR(osfs);
 554
 555         RETURN(err);
 556 out_root:
 557         if (root)
 558                 iput(root);
 559 out_lock_cn_cb:
 560         obd_fid_fini(sbi->ll_dt_exp);
 561 out_dt:
 562         obd_disconnect(sbi->ll_dt_exp);
 563         sbi->ll_dt_exp = NULL;
 564 out_md_fid:
 565         obd_fid_fini(sbi->ll_md_exp);
 566 out_md:
 567         obd_disconnect(sbi->ll_md_exp);
 568         sbi->ll_md_exp = NULL;
 569 out:
 570         if (data != NULL)
 571                 OBD_FREE_PTR(data);
 572         if (osfs != NULL)
 573                 OBD_FREE_PTR(osfs);
 574         lprocfs_unregister_mountpoint(sbi);
 575         return err;
 576 }
 577
 578 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
 579 {
 580         int size, rc;
 581
 582         *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
 583         size = sizeof(int);
 584         rc = obd_get_info(sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
 585                           KEY_MAX_EASIZE, &size, lmmsize, NULL);
 586         if (rc)
 587                 CERROR("Get max mdsize error rc %d \n", rc);
 588
 589         RETURN(rc);
 590 }
 591
 592 void ll_dump_inode(struct inode *inode)
 593 {
 594         struct list_head *tmp;
 595         int dentry_count = 0;
 596
 597         LASSERT(inode != NULL);
 598
 599         list_for_each(tmp, &inode->i_dentry)
 600                 dentry_count++;
 601
 602         CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
 603                inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
 604                inode->i_mode, atomic_read(&inode->i_count), dentry_count);
 605 }
 606
 607 void lustre_dump_dentry(struct dentry *dentry, int recur)
 608 {
 609         struct list_head *tmp;
 610         int subdirs = 0;
 611
 612         LASSERT(dentry != NULL);
 613
 614         list_for_each(tmp, &dentry->d_subdirs)
 615                 subdirs++;
 616
 617         CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
 618                " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
 619                dentry->d_name.len, dentry->d_name.name,
 620                dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
 621                dentry->d_parent, dentry->d_inode, atomic_read(&dentry->d_count),
 622                dentry->d_flags, dentry->d_fsdata, subdirs);
 623         if (dentry->d_inode != NULL)
 624                 ll_dump_inode(dentry->d_inode);
 625
 626         if (recur == 0)
 627                 return;
 628
 629        list_for_each(tmp, &dentry->d_subdirs) {
 630                 struct dentry *d = list_entry(tmp, struct dentry, d_child);
 631                 lustre_dump_dentry(d, recur - 1);
 632         }
 633 }
 634
 635 void client_common_put_super(struct super_block *sb)
 636 {
 637         struct ll_sb_info *sbi = ll_s2sbi(sb);
 638         ENTRY;
 639
 640 #ifdef CONFIG_FS_POSIX_ACL
 641         if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
 642                 et_fini(&sbi->ll_et);
 643                 rct_fini(&sbi->ll_rct);
 644         }
 645 #endif
 646
 647         obd_cancel_unused(sbi->ll_dt_exp, NULL, 0, NULL);
 648
 649         ll_close_thread_shutdown(sbi->ll_lcq);
 650
 651         cl_sb_fini(sb);
 652
 653         cfs_list_del(&sbi->ll_conn_chain);
 654
 655         obd_fid_fini(sbi->ll_dt_exp);
 656         obd_disconnect(sbi->ll_dt_exp);
 657         sbi->ll_dt_exp = NULL;
 658
 659         lprocfs_unregister_mountpoint(sbi);
 660
 661         obd_fid_fini(sbi->ll_md_exp);
 662         obd_disconnect(sbi->ll_md_exp);
 663         sbi->ll_md_exp = NULL;
 664
 665         EXIT;
 666 }
 667
 668 void ll_kill_super(struct super_block *sb)
 669 {
 670         struct ll_sb_info *sbi;
 671
 672         ENTRY;
 673
 674         /* not init sb ?*/
 675         if (!(sb->s_flags & MS_ACTIVE))
 676                 return;
 677
 678         sbi = ll_s2sbi(sb);
 679         /* we need restore s_dev from changed for clustred NFS before put_super
 680          * because new kernels have cached s_dev and change sb->s_dev in
 681          * put_super not affected real removing devices */
 682         if (sbi)
 683                 sb->s_dev = sbi->ll_sdev_orig;
 684         EXIT;
 685 }
 686
 687 char *ll_read_opt(const char *opt, char *data)
 688 {
 689         char *value;
 690         char *retval;
 691         ENTRY;
 692
 693         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 694         if (strncmp(opt, data, strlen(opt)))
 695                 RETURN(NULL);
 696         if ((value = strchr(data, '=')) == NULL)
 697                 RETURN(NULL);
 698
 699         value++;
 700         OBD_ALLOC(retval, strlen(value) + 1);
 701         if (!retval) {
 702                 CERROR("out of memory!\n");
 703                 RETURN(NULL);
 704         }
 705
 706         memcpy(retval, value, strlen(value)+1);
 707         CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
 708         RETURN(retval);
 709 }
 710
 711 static inline int ll_set_opt(const char *opt, char *data, int fl)
 712 {
 713         if (strncmp(opt, data, strlen(opt)) != 0)
 714                 return(0);
 715         else
 716                 return(fl);
 717 }
 718
 719 /* non-client-specific mount options are parsed in lmd_parse */
 720 static int ll_options(char *options, int *flags)
 721 {
 722         int tmp;
 723         char *s1 = options, *s2;
 724         ENTRY;
 725
 726         if (!options)
 727                 RETURN(0);
 728
 729         CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
 730
 731         while (*s1) {
 732                 CDEBUG(D_SUPER, "next opt=%s\n", s1);
 733                 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
 734                 if (tmp) {
 735                         *flags |= tmp;
 736                         goto next;
 737                 }
 738                 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
 739                 if (tmp) {
 740                         *flags |= tmp;
 741                         goto next;
 742                 }
 743                 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
 744                 if (tmp) {
 745                         *flags |= tmp;
 746                         goto next;
 747                 }
 748                 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
 749                 if (tmp) {
 750                         *flags &= ~tmp;
 751                         goto next;
 752                 }
 753                 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
 754                 if (tmp) {
 755                         *flags |= tmp;
 756                         goto next;
 757                 }
 758                 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
 759                 if (tmp) {
 760                         *flags &= ~tmp;
 761                         goto next;
 762                 }
 763 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,5,50,0)
 764                 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
 765                 if (tmp) {
 766                         /* Ignore deprecated mount option.  The client will
 767                          * always try to mount with ACL support, whether this
 768                          * is used depends on whether server supports it. */
 769                         LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
 770                                                   "mount option 'acl'.\n");
 771                         goto next;
 772                 }
 773                 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
 774                 if (tmp) {
 775                         LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
 776                                                   "mount option 'noacl'.\n");
 777                         goto next;
 778                 }
 779 #else
 780 #warning "{no}acl options have been deprecated since 1.8, please remove them"
 781 #endif
 782                 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
 783                 if (tmp) {
 784                         *flags |= tmp;
 785                         goto next;
 786                 }
 787
 788                 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
 789                 if (tmp) {
 790                         *flags |= tmp;
 791                         goto next;
 792                 }
 793                 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
 794                 if (tmp) {
 795                         *flags &= ~tmp;
 796                         goto next;
 797                 }
 798                 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
 799                 if (tmp) {
 800                         *flags |= tmp;
 801                         goto next;
 802                 }
 803                 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
 804                 if (tmp) {
 805                         *flags &= ~tmp;
 806                         goto next;
 807                 }
 808                 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
 809                 if (tmp) {
 810                         *flags |= tmp;
 811                         goto next;
 812                 }
 813                 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
 814                 if (tmp) {
 815                         *flags &= ~tmp;
 816                         goto next;
 817                 }
 818                 tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW);
 819                 if (tmp) {
 820                         *flags |= tmp;
 821                         goto next;
 822                 }
 823                 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
 824                 if (tmp) {
 825                         *flags |= tmp;
 826                         goto next;
 827                 }
 828                 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
 829                 if (tmp) {
 830                         *flags |= tmp;
 831                         goto next;
 832                 }
 833                 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
 834                 if (tmp) {
 835                         *flags &= ~tmp;
 836                         goto next;
 837                 }
 838                 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
 839                                    s1);
 840                 RETURN(-EINVAL);
 841
 842 next:
 843                 /* Find next opt */
 844                 s2 = strchr(s1, ',');
 845                 if (s2 == NULL)
 846                         break;
 847                 s1 = s2 + 1;
 848         }
 849         RETURN(0);
 850 }
 851
 852 void ll_lli_init(struct ll_inode_info *lli)
 853 {
 854         lli->lli_inode_magic = LLI_INODE_MAGIC;
 855         lli->lli_flags = 0;
 856         lli->lli_ioepoch = 0;
 857         lli->lli_maxbytes = MAX_LFS_FILESIZE;
 858         cfs_spin_lock_init(&lli->lli_lock);
 859         lli->lli_posix_acl = NULL;
 860         lli->lli_remote_perms = NULL;
 861         cfs_mutex_init(&lli->lli_rmtperm_mutex);
 862         /* Do not set lli_fid, it has been initialized already. */
 863         fid_zero(&lli->lli_pfid);
 864         CFS_INIT_LIST_HEAD(&lli->lli_close_list);
 865         CFS_INIT_LIST_HEAD(&lli->lli_oss_capas);
 866         cfs_atomic_set(&lli->lli_open_count, 0);
 867         lli->lli_mds_capa = NULL;
 868         lli->lli_rmtperm_time = 0;
 869         lli->lli_pending_och = NULL;
 870         lli->lli_mds_read_och = NULL;
 871         lli->lli_mds_write_och = NULL;
 872         lli->lli_mds_exec_och = NULL;
 873         lli->lli_open_fd_read_count = 0;
 874         lli->lli_open_fd_write_count = 0;
 875         lli->lli_open_fd_exec_count = 0;
 876         cfs_mutex_init(&lli->lli_och_mutex);
 877         cfs_spin_lock_init(&lli->lli_agl_lock);
 878         lli->lli_smd = NULL;
 879         lli->lli_clob = NULL;
 880
 881         LASSERT(lli->lli_vfs_inode.i_mode != 0);
 882         if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
 883                 cfs_mutex_init(&lli->lli_readdir_mutex);
 884                 lli->lli_opendir_key = NULL;
 885                 lli->lli_sai = NULL;
 886                 lli->lli_sa_pos = 0;
 887                 lli->lli_def_acl = NULL;
 888                 cfs_spin_lock_init(&lli->lli_sa_lock);
 889                 lli->lli_opendir_pid = 0;
 890         } else {
 891                 cfs_sema_init(&lli->lli_size_sem, 1);
 892                 lli->lli_size_sem_owner = NULL;
 893                 lli->lli_symlink_name = NULL;
 894                 cfs_init_rwsem(&lli->lli_trunc_sem);
 895                 cfs_mutex_init(&lli->lli_write_mutex);
 896                 lli->lli_async_rc = 0;
 897                 lli->lli_write_rc = 0;
 898                 cfs_init_rwsem(&lli->lli_glimpse_sem);
 899                 lli->lli_glimpse_time = 0;
 900                 CFS_INIT_LIST_HEAD(&lli->lli_agl_list);
 901                 lli->lli_agl_index = 0;
 902         }
 903 }
 904
 905 static inline int ll_bdi_register(struct backing_dev_info *bdi)
 906 {
 907 #ifdef HAVE_BDI_REGISTER
 908         static atomic_t ll_bdi_num = ATOMIC_INIT(0);
 909
 910 #ifdef HAVE_BDI_NAME
 911         bdi->name = "lustre";
 912 #endif
 913         return bdi_register(bdi, NULL, "lustre-%d",
 914                             atomic_inc_return(&ll_bdi_num));
 915 #else
 916         return 0;
 917 #endif
 918 }
 919
 920 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
 921 {
 922         struct lustre_profile *lprof = NULL;
 923         struct lustre_sb_info *lsi = s2lsi(sb);
 924         struct ll_sb_info *sbi;
 925         char  *dt = NULL, *md = NULL;
 926         char  *profilenm = get_profile_name(sb);
 927         struct config_llog_instance *cfg;
 928         /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
 929         const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
 930         int    err;
 931         ENTRY;
 932
 933         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 934
 935         OBD_ALLOC_PTR(cfg);
 936         if (cfg == NULL)
 937                 RETURN(-ENOMEM);
 938
 939         cfs_module_get();
 940
 941         /* client additional sb info */
 942         lsi->lsi_llsbi = sbi = ll_init_sbi();
 943         if (!sbi) {
 944                 cfs_module_put(THIS_MODULE);
 945                 OBD_FREE_PTR(cfg);
 946                 RETURN(-ENOMEM);
 947         }
 948
 949         err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
 950         if (err)
 951                 GOTO(out_free, err);
 952
 953         err = ll_bdi_init(&lsi->lsi_bdi);
 954         if (err)
 955                 GOTO(out_free, err);
 956         lsi->lsi_flags |= LSI_BDI_INITIALIZED;
 957         lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
 958         err = ll_bdi_register(&lsi->lsi_bdi);
 959         if (err)
 960                 GOTO(out_free, err);
 961
 962 #ifdef HAVE_SB_BDI
 963         sb->s_bdi = &lsi->lsi_bdi;
 964 #endif
 965
 966         /* Generate a string unique to this super, in case some joker tries
 967            to mount the same fs at two mount points.
 968            Use the address of the super itself.*/
 969         cfg->cfg_instance = sb;
 970         cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
 971
 972         /* set up client obds */
 973         err = lustre_process_log(sb, profilenm, cfg);
 974         if (err < 0) {
 975                 CERROR("Unable to process log: %d\n", err);
 976                 GOTO(out_free, err);
 977         }
 978
 979         /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
 980         lprof = class_get_profile(profilenm);
 981         if (lprof == NULL) {
 982                 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
 983                                    " read from the MGS.  Does that filesystem "
 984                                    "exist?\n", profilenm);
 985                 GOTO(out_free, err = -EINVAL);
 986         }
 987         CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
 988                lprof->lp_md, lprof->lp_dt);
 989
 990         OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
 991         if (!dt)
 992                 GOTO(out_free, err = -ENOMEM);
 993         sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
 994
 995         OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
 996         if (!md)
 997                 GOTO(out_free, err = -ENOMEM);
 998         sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
 999
1000         /* connections, registrations, sb setup */
1001         err = client_common_fill_super(sb, md, dt, mnt);
1002
1003 out_free:
1004         if (md)
1005                 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1006         if (dt)
1007                 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1008         if (err)
1009                 ll_put_super(sb);
1010         else if (sbi->ll_flags & LL_SBI_VERBOSE)
1011                 LCONSOLE_WARN("Mounted %s\n", profilenm);
1012
1013         OBD_FREE_PTR(cfg);
1014         RETURN(err);
1015 } /* ll_fill_super */
1016
1017
1018 void lu_context_keys_dump(void);
1019
1020 void ll_put_super(struct super_block *sb)
1021 {
1022         struct config_llog_instance cfg;
1023         struct obd_device *obd;
1024         struct lustre_sb_info *lsi = s2lsi(sb);
1025         struct ll_sb_info *sbi = ll_s2sbi(sb);
1026         char *profilenm = get_profile_name(sb);
1027         int force = 1, next;
1028         ENTRY;
1029
1030         CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1031
1032         ll_print_capa_stat(sbi);
1033
1034         cfg.cfg_instance = sb;
1035         lustre_end_log(sb, profilenm, &cfg);
1036
1037         if (sbi->ll_md_exp) {
1038                 obd = class_exp2obd(sbi->ll_md_exp);
1039                 if (obd)
1040                         force = obd->obd_force;
1041         }
1042
1043         /* We need to set force before the lov_disconnect in
1044            lustre_common_put_super, since l_d cleans up osc's as well. */
1045         if (force) {
1046                 next = 0;
1047                 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1048                                                      &next)) != NULL) {
1049                         obd->obd_force = force;
1050                 }
1051         }
1052
1053         if (sbi->ll_lcq) {
1054                 /* Only if client_common_fill_super succeeded */
1055                 client_common_put_super(sb);
1056         }
1057
1058         next = 0;
1059         while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1060                 class_manual_cleanup(obd);
1061         }
1062
1063         if (sbi->ll_flags & LL_SBI_VERBOSE)
1064                 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
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         cfs_module_put(THIS_MODULE);
1082
1083         EXIT;
1084 } /* client_put_super */
1085
1086 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
1087 {
1088         struct inode *inode = NULL;
1089         /* NOTE: we depend on atomic igrab() -bzzz */
1090         lock_res_and_lock(lock);
1091         if (lock->l_ast_data) {
1092                 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
1093                 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1094                         inode = igrab(lock->l_ast_data);
1095                 } else {
1096                         inode = lock->l_ast_data;
1097                         LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ?  D_INFO :
1098                                          D_WARNING, lock, "l_ast_data %p is "
1099                                          "bogus: magic %08x", lock->l_ast_data,
1100                                          lli->lli_inode_magic);
1101                         inode = NULL;
1102                 }
1103         }
1104         unlock_res_and_lock(lock);
1105         return inode;
1106 }
1107
1108 static int null_if_equal(struct ldlm_lock *lock, void *data)
1109 {
1110         if (data == lock->l_ast_data) {
1111                 lock->l_ast_data = NULL;
1112
1113                 if (lock->l_req_mode != lock->l_granted_mode)
1114                         LDLM_ERROR(lock,"clearing inode with ungranted lock");
1115         }
1116
1117         return LDLM_ITER_CONTINUE;
1118 }
1119
1120 void ll_clear_inode(struct inode *inode)
1121 {
1122         struct ll_inode_info *lli = ll_i2info(inode);
1123         struct ll_sb_info *sbi = ll_i2sbi(inode);
1124         ENTRY;
1125
1126         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1127                inode->i_generation, inode);
1128
1129         if (S_ISDIR(inode->i_mode)) {
1130                 /* these should have been cleared in ll_file_release */
1131                 LASSERT(lli->lli_opendir_key == NULL);
1132                 LASSERT(lli->lli_sai == NULL);
1133                 LASSERT(lli->lli_opendir_pid == 0);
1134         }
1135
1136         ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
1137         md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
1138                          null_if_equal, inode);
1139
1140         LASSERT(!lli->lli_open_fd_write_count);
1141         LASSERT(!lli->lli_open_fd_read_count);
1142         LASSERT(!lli->lli_open_fd_exec_count);
1143
1144         if (lli->lli_mds_write_och)
1145                 ll_md_real_close(inode, FMODE_WRITE);
1146         if (lli->lli_mds_exec_och)
1147                 ll_md_real_close(inode, FMODE_EXEC);
1148         if (lli->lli_mds_read_och)
1149                 ll_md_real_close(inode, FMODE_READ);
1150
1151         if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1152                 OBD_FREE(lli->lli_symlink_name,
1153                          strlen(lli->lli_symlink_name) + 1);
1154                 lli->lli_symlink_name = NULL;
1155         }
1156
1157         if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1158                 LASSERT(lli->lli_posix_acl == NULL);
1159                 if (lli->lli_remote_perms) {
1160                         free_rmtperm_hash(lli->lli_remote_perms);
1161                         lli->lli_remote_perms = NULL;
1162                 }
1163         }
1164 #ifdef CONFIG_FS_POSIX_ACL
1165         else if (lli->lli_posix_acl) {
1166                 LASSERT(cfs_atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1167                 LASSERT(lli->lli_remote_perms == NULL);
1168                 posix_acl_release(lli->lli_posix_acl);
1169                 lli->lli_posix_acl = NULL;
1170         }
1171 #endif
1172         lli->lli_inode_magic = LLI_INODE_DEAD;
1173
1174         ll_clear_inode_capas(inode);
1175         if (!S_ISDIR(inode->i_mode))
1176                 LASSERT(cfs_list_empty(&lli->lli_agl_list));
1177
1178         /*
1179          * XXX This has to be done before lsm is freed below, because
1180          * cl_object still uses inode lsm.
1181          */
1182         cl_inode_fini(inode);
1183
1184         if (lli->lli_smd) {
1185                 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1186                 lli->lli_smd = NULL;
1187         }
1188
1189
1190         EXIT;
1191 }
1192
1193 int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
1194                   struct md_open_data **mod)
1195 {
1196         struct lustre_md md;
1197         struct inode *inode = dentry->d_inode;
1198         struct ll_sb_info *sbi = ll_i2sbi(inode);
1199         struct ptlrpc_request *request = NULL;
1200         int rc, ia_valid;
1201         ENTRY;
1202
1203         op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1204                                      LUSTRE_OPC_ANY, NULL);
1205         if (IS_ERR(op_data))
1206                 RETURN(PTR_ERR(op_data));
1207
1208         rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
1209                         &request, mod);
1210         if (rc) {
1211                 ptlrpc_req_finished(request);
1212                 if (rc == -ENOENT) {
1213                         inode->i_nlink = 0;
1214                         /* Unlinked special device node? Or just a race?
1215                          * Pretend we done everything. */
1216                         if (!S_ISREG(inode->i_mode) &&
1217                             !S_ISDIR(inode->i_mode)) {
1218                                 ia_valid = op_data->op_attr.ia_valid;
1219                                 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1220                                 rc = simple_setattr(dentry, &op_data->op_attr);
1221                                 op_data->op_attr.ia_valid = ia_valid;
1222                         }
1223                 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1224                         CERROR("md_setattr fails: rc = %d\n", rc);
1225                 }
1226                 RETURN(rc);
1227         }
1228
1229         rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1230                               sbi->ll_md_exp, &md);
1231         if (rc) {
1232                 ptlrpc_req_finished(request);
1233                 RETURN(rc);
1234         }
1235
1236         /* We want to adjust timestamps.
1237          * If there is at least some data in file, we cleared ATTR_SIZE
1238          * to avoid update size, otherwise it is important to do.(SOM case)
1239          * (bug 6196) */
1240         ia_valid = op_data->op_attr.ia_valid;
1241         /* Since we set ATTR_*_SET flags above, and already done permission
1242          * check, So don't let inode_change_ok() check it again.  */
1243         op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1244         rc = simple_setattr(dentry, &op_data->op_attr);
1245         op_data->op_attr.ia_valid = ia_valid;
1246
1247         /* Extract epoch data if obtained. */
1248         op_data->op_handle = md.body->handle;
1249         op_data->op_ioepoch = md.body->ioepoch;
1250
1251         ll_update_inode(inode, &md);
1252         ptlrpc_req_finished(request);
1253
1254         RETURN(rc);
1255 }
1256
1257 /* Close IO epoch and send Size-on-MDS attribute update. */
1258 static int ll_setattr_done_writing(struct inode *inode,
1259                                    struct md_op_data *op_data,
1260                                    struct md_open_data *mod)
1261 {
1262         struct ll_inode_info *lli = ll_i2info(inode);
1263         int rc = 0;
1264         ENTRY;
1265
1266         LASSERT(op_data != NULL);
1267         if (!S_ISREG(inode->i_mode))
1268                 RETURN(0);
1269
1270         CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
1271                op_data->op_ioepoch, PFID(&lli->lli_fid));
1272
1273         op_data->op_flags = MF_EPOCH_CLOSE;
1274         ll_done_writing_attr(inode, op_data);
1275         ll_pack_inode2opdata(inode, op_data, NULL);
1276
1277         rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
1278         if (rc == -EAGAIN) {
1279                 /* MDS has instructed us to obtain Size-on-MDS attribute
1280                  * from OSTs and send setattr to back to MDS. */
1281                 rc = ll_som_update(inode, op_data);
1282         } else if (rc) {
1283                 CERROR("inode %lu mdc truncate failed: rc = %d\n",
1284                        inode->i_ino, rc);
1285         }
1286         RETURN(rc);
1287 }
1288
1289 static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
1290 {
1291         struct obd_capa *capa;
1292         int rc;
1293
1294         if (attr->ia_valid & ATTR_SIZE)
1295                 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
1296         else
1297                 capa = ll_mdscapa_get(inode);
1298
1299         rc = cl_setattr_ost(inode, attr, capa);
1300
1301         if (attr->ia_valid & ATTR_SIZE)
1302                 ll_truncate_free_capa(capa);
1303         else
1304                 capa_put(capa);
1305
1306         return rc;
1307 }
1308
1309 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1310  * object(s) determine the file size and mtime.  Otherwise, the MDS will
1311  * keep these values until such a time that objects are allocated for it.
1312  * We do the MDS operations first, as it is checking permissions for us.
1313  * We don't to the MDS RPC if there is nothing that we want to store there,
1314  * otherwise there is no harm in updating mtime/atime on the MDS if we are
1315  * going to do an RPC anyways.
1316  *
1317  * If we are doing a truncate, we will send the mtime and ctime updates
1318  * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1319  * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1320  * at the same time.
1321  */
1322 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr)
1323 {
1324         struct inode *inode = dentry->d_inode;
1325         struct ll_inode_info *lli = ll_i2info(inode);
1326         struct lov_stripe_md *lsm = lli->lli_smd;
1327         struct md_op_data *op_data = NULL;
1328         struct md_open_data *mod = NULL;
1329         int ia_valid = attr->ia_valid;
1330         int rc = 0, rc1 = 0;
1331         ENTRY;
1332
1333         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
1334                attr->ia_valid);
1335
1336         if (ia_valid & ATTR_SIZE) {
1337                 /* Check new size against VFS/VM file size limit and rlimit */
1338                 rc = inode_newsize_ok(inode, attr->ia_size);
1339                 if (rc)
1340                         RETURN(rc);
1341
1342                 /* The maximum Lustre file size is variable, based on the
1343                  * OST maximum object size and number of stripes.  This
1344                  * needs another check in addition to the VFS check above. */
1345                 if (attr->ia_size > ll_file_maxbytes(inode)) {
1346                         CDEBUG(D_INODE,"file "DFID" too large %llu > "LPU64"\n",
1347                                PFID(&lli->lli_fid), attr->ia_size,
1348                                ll_file_maxbytes(inode));
1349                         RETURN(-EFBIG);
1350                 }
1351
1352                 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1353         }
1354
1355         /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1356         if (ia_valid & TIMES_SET_FLAGS) {
1357                 if (cfs_curproc_fsuid() != inode->i_uid &&
1358                     !cfs_capable(CFS_CAP_FOWNER))
1359                         RETURN(-EPERM);
1360         }
1361
1362         /* We mark all of the fields "set" so MDS/OST does not re-set them */
1363         if (attr->ia_valid & ATTR_CTIME) {
1364                 attr->ia_ctime = CFS_CURRENT_TIME;
1365                 attr->ia_valid |= ATTR_CTIME_SET;
1366         }
1367         if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1368                 attr->ia_atime = CFS_CURRENT_TIME;
1369                 attr->ia_valid |= ATTR_ATIME_SET;
1370         }
1371         if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1372                 attr->ia_mtime = CFS_CURRENT_TIME;
1373                 attr->ia_valid |= ATTR_MTIME_SET;
1374         }
1375
1376         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1377                 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1378                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1379                        cfs_time_current_sec());
1380
1381         /* NB: ATTR_SIZE will only be set after this point if the size
1382          * resides on the MDS, ie, this file has no objects. */
1383         if (lsm)
1384                 attr->ia_valid &= ~ATTR_SIZE;
1385
1386         /* We always do an MDS RPC, even if we're only changing the size;
1387          * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1388
1389         OBD_ALLOC_PTR(op_data);
1390         if (op_data == NULL)
1391                 RETURN(-ENOMEM);
1392
1393         if (!S_ISDIR(inode->i_mode)) {
1394                 if (ia_valid & ATTR_SIZE)
1395                         UP_WRITE_I_ALLOC_SEM(inode);
1396                 UNLOCK_INODE_MUTEX(inode);
1397                 cfs_down_write(&lli->lli_trunc_sem);
1398                 LOCK_INODE_MUTEX(inode);
1399                 if (ia_valid & ATTR_SIZE)
1400                         DOWN_WRITE_I_ALLOC_SEM(inode);
1401         }
1402
1403         memcpy(&op_data->op_attr, attr, sizeof(*attr));
1404
1405         /* Open epoch for truncate. */
1406         if (exp_connect_som(ll_i2mdexp(inode)) &&
1407             (ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
1408                 op_data->op_flags = MF_EPOCH_OPEN;
1409
1410         rc = ll_md_setattr(dentry, op_data, &mod);
1411         if (rc)
1412                 GOTO(out, rc);
1413
1414         ll_ioepoch_open(lli, op_data->op_ioepoch);
1415         if (!lsm || !S_ISREG(inode->i_mode)) {
1416                 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1417                 GOTO(out, rc = 0);
1418         }
1419
1420         if (ia_valid & ATTR_SIZE)
1421                 attr->ia_valid |= ATTR_SIZE;
1422         if (ia_valid & (ATTR_SIZE |
1423                         ATTR_ATIME | ATTR_ATIME_SET |
1424                         ATTR_MTIME | ATTR_MTIME_SET))
1425                 /* For truncate and utimes sending attributes to OSTs, setting
1426                  * mtime/atime to the past will be performed under PW [0:EOF]
1427                  * extent lock (new_size:EOF for truncate).  It may seem
1428                  * excessive to send mtime/atime updates to OSTs when not
1429                  * setting times to past, but it is necessary due to possible
1430                  * time de-synchronization between MDT inode and OST objects */
1431                 rc = ll_setattr_ost(inode, attr);
1432         EXIT;
1433 out:
1434         if (op_data) {
1435                 if (op_data->op_ioepoch) {
1436                         rc1 = ll_setattr_done_writing(inode, op_data, mod);
1437                         if (!rc)
1438                                 rc = rc1;
1439                 }
1440                 ll_finish_md_op_data(op_data);
1441         }
1442         if (!S_ISDIR(inode->i_mode))
1443                 cfs_up_write(&lli->lli_trunc_sem);
1444
1445         ll_stats_ops_tally(ll_i2sbi(inode), (ia_valid & ATTR_SIZE) ?
1446                            LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1447
1448         return rc;
1449 }
1450
1451 int ll_setattr(struct dentry *de, struct iattr *attr)
1452 {
1453         int mode = de->d_inode->i_mode;
1454
1455         if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1456                               (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1457                 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1458
1459         if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1460                                (ATTR_SIZE|ATTR_MODE)) &&
1461             (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1462              (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1463               !(attr->ia_mode & S_ISGID))))
1464                 attr->ia_valid |= ATTR_FORCE;
1465
1466         if ((mode & S_ISUID) &&
1467             !(attr->ia_mode & S_ISUID) &&
1468             !(attr->ia_valid & ATTR_KILL_SUID))
1469                 attr->ia_valid |= ATTR_KILL_SUID;
1470
1471         if (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1472             !(attr->ia_mode & S_ISGID) &&
1473             !(attr->ia_valid & ATTR_KILL_SGID))
1474                 attr->ia_valid |= ATTR_KILL_SGID;
1475
1476         return ll_setattr_raw(de, attr);
1477 }
1478
1479 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1480                        __u64 max_age, __u32 flags)
1481 {
1482         struct ll_sb_info *sbi = ll_s2sbi(sb);
1483         struct obd_statfs obd_osfs;
1484         int rc;
1485         ENTRY;
1486
1487         rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, flags);
1488         if (rc) {
1489                 CERROR("md_statfs fails: rc = %d\n", rc);
1490                 RETURN(rc);
1491         }
1492
1493         osfs->os_type = sb->s_magic;
1494
1495         CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1496                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1497
1498         if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1499                 flags |= OBD_STATFS_NODELAY;
1500
1501         rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
1502                               &obd_osfs, max_age, flags);
1503         if (rc) {
1504                 CERROR("obd_statfs fails: rc = %d\n", rc);
1505                 RETURN(rc);
1506         }
1507
1508         CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1509                obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1510                obd_osfs.os_files);
1511
1512         osfs->os_bsize = obd_osfs.os_bsize;
1513         osfs->os_blocks = obd_osfs.os_blocks;
1514         osfs->os_bfree = obd_osfs.os_bfree;
1515         osfs->os_bavail = obd_osfs.os_bavail;
1516
1517         /* If we don't have as many objects free on the OST as inodes
1518          * on the MDS, we reduce the total number of inodes to
1519          * compensate, so that the "inodes in use" number is correct.
1520          */
1521         if (obd_osfs.os_ffree < osfs->os_ffree) {
1522                 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1523                         obd_osfs.os_ffree;
1524                 osfs->os_ffree = obd_osfs.os_ffree;
1525         }
1526
1527         RETURN(rc);
1528 }
1529 #ifndef HAVE_STATFS_DENTRY_PARAM
1530 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1531 {
1532 #else
1533 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1534 {
1535         struct super_block *sb = de->d_sb;
1536 #endif
1537         struct obd_statfs osfs;
1538         int rc;
1539
1540         CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1541         ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1542
1543         /* Some amount of caching on the client is allowed */
1544         rc = ll_statfs_internal(sb, &osfs,
1545                                 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1546                                 0);
1547         if (rc)
1548                 return rc;
1549
1550         statfs_unpack(sfs, &osfs);
1551
1552         /* We need to downshift for all 32-bit kernels, because we can't
1553          * tell if the kernel is being called via sys_statfs64() or not.
1554          * Stop before overflowing f_bsize - in which case it is better
1555          * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1556         if (sizeof(long) < 8) {
1557                 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1558                         sfs->f_bsize <<= 1;
1559
1560                         osfs.os_blocks >>= 1;
1561                         osfs.os_bfree >>= 1;
1562                         osfs.os_bavail >>= 1;
1563                 }
1564         }
1565
1566         sfs->f_blocks = osfs.os_blocks;
1567         sfs->f_bfree = osfs.os_bfree;
1568         sfs->f_bavail = osfs.os_bavail;
1569
1570         return 0;
1571 }
1572
1573 void ll_inode_size_lock(struct inode *inode, int lock_lsm)
1574 {
1575         struct ll_inode_info *lli;
1576         struct lov_stripe_md *lsm;
1577
1578         LASSERT(!S_ISDIR(inode->i_mode));
1579
1580         lli = ll_i2info(inode);
1581         LASSERT(lli->lli_size_sem_owner != current);
1582         cfs_down(&lli->lli_size_sem);
1583         LASSERT(lli->lli_size_sem_owner == NULL);
1584         lli->lli_size_sem_owner = current;
1585         lsm = lli->lli_smd;
1586         LASSERTF(lsm != NULL || lock_lsm == 0, "lsm %p, lock_lsm %d\n",
1587                  lsm, lock_lsm);
1588         if (lock_lsm)
1589                 lov_stripe_lock(lsm);
1590 }
1591
1592 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
1593 {
1594         struct ll_inode_info *lli;
1595         struct lov_stripe_md *lsm;
1596
1597         lli = ll_i2info(inode);
1598         lsm = lli->lli_smd;
1599         LASSERTF(lsm != NULL || unlock_lsm == 0, "lsm %p, lock_lsm %d\n",
1600                  lsm, unlock_lsm);
1601         if (unlock_lsm)
1602                 lov_stripe_unlock(lsm);
1603         LASSERT(lli->lli_size_sem_owner == current);
1604         lli->lli_size_sem_owner = NULL;
1605         cfs_up(&lli->lli_size_sem);
1606 }
1607
1608 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1609 {
1610         struct ll_inode_info *lli = ll_i2info(inode);
1611         struct mdt_body *body = md->body;
1612         struct lov_stripe_md *lsm = md->lsm;
1613         struct ll_sb_info *sbi = ll_i2sbi(inode);
1614
1615         LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1616         if (lsm != NULL) {
1617                 LASSERT(S_ISREG(inode->i_mode));
1618
1619                 cfs_mutex_lock(&lli->lli_och_mutex);
1620                 if (lli->lli_smd == NULL) {
1621                         if (lsm->lsm_magic != LOV_MAGIC_V1 &&
1622                             lsm->lsm_magic != LOV_MAGIC_V3) {
1623                                 dump_lsm(D_ERROR, lsm);
1624                                 LBUG();
1625                         }
1626                         CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
1627                                lsm, inode->i_ino, inode->i_generation, inode);
1628                         /* cl_file_inode_init must go before lli_smd or a race
1629                          * is possible where client thinks the file has stripes,
1630                          * but lov raid0 is not setup yet and parallel e.g.
1631                          * glimpse would try to use uninitialized lov */
1632                         cl_file_inode_init(inode, md);
1633                         cfs_spin_lock(&lli->lli_lock);
1634                         lli->lli_smd = lsm;
1635                         cfs_spin_unlock(&lli->lli_lock);
1636                         cfs_mutex_unlock(&lli->lli_och_mutex);
1637                         lli->lli_maxbytes = lsm->lsm_maxbytes;
1638                         if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
1639                                 lli->lli_maxbytes = MAX_LFS_FILESIZE;
1640                 } else {
1641                         cfs_mutex_unlock(&lli->lli_och_mutex);
1642                         LASSERT(lli->lli_smd->lsm_magic == lsm->lsm_magic &&
1643                                 lli->lli_smd->lsm_stripe_count ==
1644                                 lsm->lsm_stripe_count);
1645                         if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
1646                                 CERROR("lsm mismatch for inode %ld\n",
1647                                        inode->i_ino);
1648                                 CERROR("lli_smd:\n");
1649                                 dump_lsm(D_ERROR, lli->lli_smd);
1650                                 CERROR("lsm:\n");
1651                                 dump_lsm(D_ERROR, lsm);
1652                                 LBUG();
1653                         }
1654                 }
1655                 if (lli->lli_smd != lsm)
1656                         obd_free_memmd(ll_i2dtexp(inode), &lsm);
1657         }
1658
1659         if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1660                 if (body->valid & OBD_MD_FLRMTPERM)
1661                         ll_update_remote_perm(inode, md->remote_perm);
1662         }
1663 #ifdef CONFIG_FS_POSIX_ACL
1664         else if (body->valid & OBD_MD_FLACL) {
1665                 cfs_spin_lock(&lli->lli_lock);
1666                 if (lli->lli_posix_acl)
1667                         posix_acl_release(lli->lli_posix_acl);
1668                 lli->lli_posix_acl = md->posix_acl;
1669                 cfs_spin_unlock(&lli->lli_lock);
1670         }
1671 #endif
1672         inode->i_ino = cl_fid_build_ino(&body->fid1, 0);
1673         inode->i_generation = cl_fid_build_gen(&body->fid1);
1674
1675         if (body->valid & OBD_MD_FLATIME) {
1676                 if (body->atime > LTIME_S(inode->i_atime))
1677                         LTIME_S(inode->i_atime) = body->atime;
1678                 lli->lli_lvb.lvb_atime = body->atime;
1679         }
1680         if (body->valid & OBD_MD_FLMTIME) {
1681                 if (body->mtime > LTIME_S(inode->i_mtime)) {
1682                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1683                                "to "LPU64"\n", inode->i_ino,
1684                                LTIME_S(inode->i_mtime), body->mtime);
1685                         LTIME_S(inode->i_mtime) = body->mtime;
1686                 }
1687                 lli->lli_lvb.lvb_mtime = body->mtime;
1688         }
1689         if (body->valid & OBD_MD_FLCTIME) {
1690                 if (body->ctime > LTIME_S(inode->i_ctime))
1691                         LTIME_S(inode->i_ctime) = body->ctime;
1692                 lli->lli_lvb.lvb_ctime = body->ctime;
1693         }
1694         if (body->valid & OBD_MD_FLMODE)
1695                 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
1696         if (body->valid & OBD_MD_FLTYPE)
1697                 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
1698         LASSERT(inode->i_mode != 0);
1699         if (S_ISREG(inode->i_mode)) {
1700                 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
1701         } else {
1702                 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1703         }
1704 #ifdef HAVE_INODE_BLKSIZE
1705         inode->i_blksize = 1<<inode->i_blkbits;
1706 #endif
1707         if (body->valid & OBD_MD_FLUID)
1708                 inode->i_uid = body->uid;
1709         if (body->valid & OBD_MD_FLGID)
1710                 inode->i_gid = body->gid;
1711         if (body->valid & OBD_MD_FLFLAGS)
1712                 inode->i_flags = ll_ext_to_inode_flags(body->flags);
1713         if (body->valid & OBD_MD_FLNLINK)
1714                 inode->i_nlink = body->nlink;
1715         if (body->valid & OBD_MD_FLRDEV)
1716                 inode->i_rdev = old_decode_dev(body->rdev);
1717
1718         if (body->valid & OBD_MD_FLID) {
1719                 /* FID shouldn't be changed! */
1720                 if (fid_is_sane(&lli->lli_fid)) {
1721                         LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
1722                                  "Trying to change FID "DFID
1723                                  " to the "DFID", inode %lu/%u(%p)\n",
1724                                  PFID(&lli->lli_fid), PFID(&body->fid1),
1725                                  inode->i_ino, inode->i_generation, inode);
1726                 } else
1727                         lli->lli_fid = body->fid1;
1728         }
1729
1730         LASSERT(fid_seq(&lli->lli_fid) != 0);
1731
1732         if (body->valid & OBD_MD_FLSIZE) {
1733                 if (exp_connect_som(ll_i2mdexp(inode)) &&
1734                     S_ISREG(inode->i_mode) && lli->lli_smd) {
1735                         struct lustre_handle lockh;
1736                         ldlm_mode_t mode;
1737
1738                         /* As it is possible a blocking ast has been processed
1739                          * by this time, we need to check there is an UPDATE
1740                          * lock on the client and set LLIF_MDS_SIZE_LOCK holding
1741                          * it. */
1742                         mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
1743                                                &lockh);
1744                         if (mode) {
1745                                 if (lli->lli_flags & (LLIF_DONE_WRITING |
1746                                                       LLIF_EPOCH_PENDING |
1747                                                       LLIF_SOM_DIRTY)) {
1748                                         CERROR("ino %lu flags %u still has "
1749                                                "size authority! do not trust "
1750                                                "the size got from MDS\n",
1751                                                inode->i_ino, lli->lli_flags);
1752                                 } else {
1753                                         /* Use old size assignment to avoid
1754                                          * deadlock bz14138 & bz14326 */
1755                                         i_size_write(inode, body->size);
1756                                         lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
1757                                 }
1758                                 ldlm_lock_decref(&lockh, mode);
1759                         }
1760                 } else {
1761                         /* Use old size assignment to avoid
1762                          * deadlock bz14138 & bz14326 */
1763                         i_size_write(inode, body->size);
1764
1765                         CDEBUG(D_VFSTRACE, "inode=%lu, updating i_size %llu\n",
1766                                inode->i_ino, (unsigned long long)body->size);
1767                 }
1768
1769                 if (body->valid & OBD_MD_FLBLOCKS)
1770                         inode->i_blocks = body->blocks;
1771         }
1772
1773         if (body->valid & OBD_MD_FLMDSCAPA) {
1774                 LASSERT(md->mds_capa);
1775                 ll_add_capa(inode, md->mds_capa);
1776         }
1777         if (body->valid & OBD_MD_FLOSSCAPA) {
1778                 LASSERT(md->oss_capa);
1779                 ll_add_capa(inode, md->oss_capa);
1780         }
1781 }
1782
1783 void ll_read_inode2(struct inode *inode, void *opaque)
1784 {
1785         struct lustre_md *md = opaque;
1786         struct ll_inode_info *lli = ll_i2info(inode);
1787         ENTRY;
1788
1789         CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1790                PFID(&lli->lli_fid), inode);
1791
1792         LASSERT(!lli->lli_smd);
1793
1794         /* Core attributes from the MDS first.  This is a new inode, and
1795          * the VFS doesn't zero times in the core inode so we have to do
1796          * it ourselves.  They will be overwritten by either MDS or OST
1797          * attributes - we just need to make sure they aren't newer. */
1798         LTIME_S(inode->i_mtime) = 0;
1799         LTIME_S(inode->i_atime) = 0;
1800         LTIME_S(inode->i_ctime) = 0;
1801         inode->i_rdev = 0;
1802         ll_update_inode(inode, md);
1803
1804         /* OIDEBUG(inode); */
1805
1806         /* initializing backing dev info. */
1807         inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
1808
1809
1810         if (S_ISREG(inode->i_mode)) {
1811                 struct ll_sb_info *sbi = ll_i2sbi(inode);
1812                 inode->i_op = &ll_file_inode_operations;
1813                 inode->i_fop = sbi->ll_fop;
1814                 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
1815                 EXIT;
1816         } else if (S_ISDIR(inode->i_mode)) {
1817                 inode->i_op = &ll_dir_inode_operations;
1818                 inode->i_fop = &ll_dir_operations;
1819                 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_dir_aops;
1820                 EXIT;
1821         } else if (S_ISLNK(inode->i_mode)) {
1822                 inode->i_op = &ll_fast_symlink_inode_operations;
1823                 EXIT;
1824         } else {
1825                 inode->i_op = &ll_special_inode_operations;
1826
1827                 init_special_inode(inode, inode->i_mode,
1828                                    kdev_t_to_nr(inode->i_rdev));
1829
1830                 EXIT;
1831         }
1832 }
1833
1834 void ll_delete_inode(struct inode *inode)
1835 {
1836         struct ll_sb_info *sbi = ll_i2sbi(inode);
1837         int rc;
1838         ENTRY;
1839
1840         rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
1841         if (rc)
1842                 CERROR("fid_delete() failed, rc %d\n", rc);
1843
1844         truncate_inode_pages(&inode->i_data, 0);
1845
1846         /* Workaround for LU-118 */
1847         if (inode->i_data.nrpages) {
1848                 TREE_READ_LOCK_IRQ(&inode->i_data);
1849                 TREE_READ_UNLOCK_IRQ(&inode->i_data);
1850                 LASSERTF(inode->i_data.nrpages == 0,
1851                          "inode=%lu/%u(%p) nrpages=%lu, see "
1852                          "http://jira.whamcloud.com/browse/LU-118\n",
1853                          inode->i_ino, inode->i_generation, inode,
1854                          inode->i_data.nrpages);
1855         }
1856         /* Workaround end */
1857
1858 #ifdef HAVE_SBOPS_EVICT_INODE
1859         ll_clear_inode(inode);
1860         end_writeback(inode);
1861 #else
1862         clear_inode(inode);
1863 #endif
1864
1865         EXIT;
1866 }
1867
1868 int ll_iocontrol(struct inode *inode, struct file *file,
1869                  unsigned int cmd, unsigned long arg)
1870 {
1871         struct ll_sb_info *sbi = ll_i2sbi(inode);
1872         struct ptlrpc_request *req = NULL;
1873         int rc, flags = 0;
1874         ENTRY;
1875
1876         switch(cmd) {
1877         case FSFILT_IOC_GETFLAGS: {
1878                 struct mdt_body *body;
1879                 struct md_op_data *op_data;
1880
1881                 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
1882                                              0, 0, LUSTRE_OPC_ANY,
1883                                              NULL);
1884                 if (IS_ERR(op_data))
1885                         RETURN(PTR_ERR(op_data));
1886
1887                 op_data->op_valid = OBD_MD_FLFLAGS;
1888                 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
1889                 ll_finish_md_op_data(op_data);
1890                 if (rc) {
1891                         CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1892                         RETURN(-abs(rc));
1893                 }
1894
1895                 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1896
1897                 flags = body->flags;
1898
1899                 ptlrpc_req_finished(req);
1900
1901                 RETURN(put_user(flags, (int *)arg));
1902         }
1903         case FSFILT_IOC_SETFLAGS: {
1904                 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1905                 struct obd_info oinfo = { { { 0 } } };
1906                 struct md_op_data *op_data;
1907
1908                 if (get_user(flags, (int *)arg))
1909                         RETURN(-EFAULT);
1910
1911                 oinfo.oi_md = lsm;
1912                 OBDO_ALLOC(oinfo.oi_oa);
1913                 if (!oinfo.oi_oa)
1914                         RETURN(-ENOMEM);
1915
1916                 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
1917                                              LUSTRE_OPC_ANY, NULL);
1918                 if (IS_ERR(op_data))
1919                         RETURN(PTR_ERR(op_data));
1920
1921                 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
1922                 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
1923                 rc = md_setattr(sbi->ll_md_exp, op_data,
1924                                 NULL, 0, NULL, 0, &req, NULL);
1925                 ll_finish_md_op_data(op_data);
1926                 ptlrpc_req_finished(req);
1927                 if (rc) {
1928                         OBDO_FREE(oinfo.oi_oa);
1929                         RETURN(rc);
1930                 }
1931
1932                 if (lsm == NULL) {
1933                         OBDO_FREE(oinfo.oi_oa);
1934                         GOTO(update_cache, rc);
1935                 }
1936
1937                 oinfo.oi_oa->o_id = lsm->lsm_object_id;
1938                 oinfo.oi_oa->o_seq = lsm->lsm_object_seq;
1939                 oinfo.oi_oa->o_flags = flags;
1940                 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
1941                                        OBD_MD_FLGROUP;
1942                 oinfo.oi_capa = ll_mdscapa_get(inode);
1943                 obdo_set_parent_fid(oinfo.oi_oa, &ll_i2info(inode)->lli_fid);
1944                 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
1945                 capa_put(oinfo.oi_capa);
1946                 OBDO_FREE(oinfo.oi_oa);
1947                 if (rc) {
1948                         if (rc != -EPERM && rc != -EACCES)
1949                                 CERROR("osc_setattr_async fails: rc = %d\n",rc);
1950                         RETURN(rc);
1951                 }
1952
1953                 EXIT;
1954 update_cache:
1955                 inode->i_flags = ll_ext_to_inode_flags(flags);
1956                 return 0;
1957         }
1958         default:
1959                 RETURN(-ENOSYS);
1960         }
1961
1962         RETURN(0);
1963 }
1964
1965 int ll_flush_ctx(struct inode *inode)
1966 {
1967         struct ll_sb_info  *sbi = ll_i2sbi(inode);
1968
1969         CDEBUG(D_SEC, "flush context for user %d\n", cfs_curproc_uid());
1970
1971         obd_set_info_async(sbi->ll_md_exp,
1972                            sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
1973                            0, NULL, NULL);
1974         obd_set_info_async(sbi->ll_dt_exp,
1975                            sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
1976                            0, NULL, NULL);
1977         return 0;
1978 }
1979
1980 /* umount -f client means force down, don't save state */
1981 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1982 void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
1983 {
1984         struct super_block *sb = vfsmnt->mnt_sb;
1985 #else
1986 void ll_umount_begin(struct super_block *sb)
1987 {
1988 #endif
1989         struct lustre_sb_info *lsi = s2lsi(sb);
1990         struct ll_sb_info *sbi = ll_s2sbi(sb);
1991         struct obd_device *obd;
1992         struct obd_ioctl_data *ioc_data;
1993         ENTRY;
1994
1995 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
1996         if (!(flags & MNT_FORCE)) {
1997                 EXIT;
1998                 return;
1999         }
2000 #endif
2001
2002         /* Tell the MGC we got umount -f */
2003         lsi->lsi_flags |= LSI_UMOUNT_FORCE;
2004
2005         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2006                sb->s_count, atomic_read(&sb->s_active));
2007
2008         obd = class_exp2obd(sbi->ll_md_exp);
2009         if (obd == NULL) {
2010                 CERROR("Invalid MDC connection handle "LPX64"\n",
2011                        sbi->ll_md_exp->exp_handle.h_cookie);
2012                 EXIT;
2013                 return;
2014         }
2015         obd->obd_force = 1;
2016
2017         obd = class_exp2obd(sbi->ll_dt_exp);
2018         if (obd == NULL) {
2019                 CERROR("Invalid LOV connection handle "LPX64"\n",
2020                        sbi->ll_dt_exp->exp_handle.h_cookie);
2021                 EXIT;
2022                 return;
2023         }
2024         obd->obd_force = 1;
2025
2026         OBD_ALLOC_PTR(ioc_data);
2027         if (ioc_data) {
2028                 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2029                               sizeof ioc_data, ioc_data, NULL);
2030
2031                 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2032                               sizeof ioc_data, ioc_data, NULL);
2033
2034                 OBD_FREE_PTR(ioc_data);
2035         }
2036
2037
2038         /* Really, we'd like to wait until there are no requests outstanding,
2039          * and then continue.  For now, we just invalidate the requests,
2040          * schedule() and sleep one second if needed, and hope.
2041          */
2042         cfs_schedule();
2043 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
2044         if (atomic_read(&vfsmnt->mnt_count) > 2) {
2045                 cfs_schedule_timeout_and_set_state(CFS_TASK_INTERRUPTIBLE,
2046                                                    cfs_time_seconds(1));
2047                 if (atomic_read(&vfsmnt->mnt_count) > 2)
2048                         LCONSOLE_WARN("Mount still busy with %d refs! You "
2049                                       "may try to umount it a bit later\n",
2050                                       atomic_read(&vfsmnt->mnt_count));
2051         }
2052 #endif
2053
2054         EXIT;
2055 }
2056
2057 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2058 {
2059         struct ll_sb_info *sbi = ll_s2sbi(sb);
2060         char *profilenm = get_profile_name(sb);
2061         int err;
2062         __u32 read_only;
2063
2064         if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2065                 read_only = *flags & MS_RDONLY;
2066                 err = obd_set_info_async(sbi->ll_md_exp,
2067                                          sizeof(KEY_READ_ONLY),
2068                                          KEY_READ_ONLY, sizeof(read_only),
2069                                          &read_only, NULL);
2070                 if (err) {
2071                         LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2072                                       profilenm, read_only ?
2073                                       "read-only" : "read-write", err);
2074                         return err;
2075                 }
2076
2077                 if (read_only)
2078                         sb->s_flags |= MS_RDONLY;
2079                 else
2080                         sb->s_flags &= ~MS_RDONLY;
2081
2082                 if (sbi->ll_flags & LL_SBI_VERBOSE)
2083                         LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2084                                       read_only ?  "read-only" : "read-write");
2085         }
2086         return 0;
2087 }
2088
2089 int ll_prep_inode(struct inode **inode,
2090                   struct ptlrpc_request *req,
2091                   struct super_block *sb)
2092 {
2093         struct ll_sb_info *sbi = NULL;
2094         struct lustre_md md;
2095         int rc;
2096         ENTRY;
2097
2098         LASSERT(*inode || sb);
2099         sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2100         rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2101                               sbi->ll_md_exp, &md);
2102         if (rc)
2103                 RETURN(rc);
2104
2105         if (*inode) {
2106                 ll_update_inode(*inode, &md);
2107         } else {
2108                 LASSERT(sb != NULL);
2109
2110                 /*
2111                  * At this point server returns to client's same fid as client
2112                  * generated for creating. So using ->fid1 is okay here.
2113                  */
2114                 LASSERT(fid_is_sane(&md.body->fid1));
2115
2116                 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1, 0), &md);
2117                 if (*inode == NULL || IS_ERR(*inode)) {
2118                         if (md.lsm)
2119                                 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2120 #ifdef CONFIG_FS_POSIX_ACL
2121                         if (md.posix_acl) {
2122                                 posix_acl_release(md.posix_acl);
2123                                 md.posix_acl = NULL;
2124                         }
2125 #endif
2126                         rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2127                         *inode = NULL;
2128                         CERROR("new_inode -fatal: rc %d\n", rc);
2129                         GOTO(out, rc);
2130                 }
2131         }
2132
2133 out:
2134         md_free_lustre_md(sbi->ll_md_exp, &md);
2135         RETURN(rc);
2136 }
2137
2138 int ll_obd_statfs(struct inode *inode, void *arg)
2139 {
2140         struct ll_sb_info *sbi = NULL;
2141         struct obd_export *exp;
2142         char *buf = NULL;
2143         struct obd_ioctl_data *data = NULL;
2144         __u32 type;
2145         int len = 0, rc;
2146
2147         if (!inode || !(sbi = ll_i2sbi(inode)))
2148                 GOTO(out_statfs, rc = -EINVAL);
2149
2150         rc = obd_ioctl_getdata(&buf, &len, arg);
2151         if (rc)
2152                 GOTO(out_statfs, rc);
2153
2154         data = (void*)buf;
2155         if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2156             !data->ioc_pbuf1 || !data->ioc_pbuf2)
2157                 GOTO(out_statfs, rc = -EINVAL);
2158
2159         if (data->ioc_inllen1 != sizeof(__u32) ||
2160             data->ioc_inllen2 != sizeof(__u32) ||
2161             data->ioc_plen1 != sizeof(struct obd_statfs) ||
2162             data->ioc_plen2 != sizeof(struct obd_uuid))
2163                 GOTO(out_statfs, rc = -EINVAL);
2164
2165         memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2166         if (type == LL_STATFS_LMV)
2167                 exp = sbi->ll_md_exp;
2168         else if (type == LL_STATFS_LOV)
2169                 exp = sbi->ll_dt_exp;
2170         else
2171                 GOTO(out_statfs, rc = -ENODEV);
2172
2173         rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2174         if (rc)
2175                 GOTO(out_statfs, rc);
2176 out_statfs:
2177         if (buf)
2178                 obd_ioctl_freedata(buf, len);
2179         return rc;
2180 }
2181
2182 int ll_process_config(struct lustre_cfg *lcfg)
2183 {
2184         char *ptr;
2185         void *sb;
2186         struct lprocfs_static_vars lvars;
2187         unsigned long x;
2188         int rc = 0;
2189
2190         lprocfs_llite_init_vars(&lvars);
2191
2192         /* The instance name contains the sb: lustre-client-aacfe000 */
2193         ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2194         if (!ptr || !*(++ptr))
2195                 return -EINVAL;
2196         if (sscanf(ptr, "%lx", &x) != 1)
2197                 return -EINVAL;
2198         sb = (void *)x;
2199         /* This better be a real Lustre superblock! */
2200         LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2201
2202         /* Note we have not called client_common_fill_super yet, so
2203            proc fns must be able to handle that! */
2204         rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
2205                                       lcfg, sb);
2206         if (rc > 0)
2207                 rc = 0;
2208         return(rc);
2209 }
2210
2211 /* this function prepares md_op_data hint for passing ot down to MD stack. */
2212 struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
2213                                        struct inode *i1, struct inode *i2,
2214                                        const char *name, int namelen,
2215                                        int mode, __u32 opc, void *data)
2216 {
2217         LASSERT(i1 != NULL);
2218
2219         if (namelen > ll_i2sbi(i1)->ll_namelen)
2220                 return ERR_PTR(-ENAMETOOLONG);
2221
2222         if (op_data == NULL)
2223                 OBD_ALLOC_PTR(op_data);
2224
2225         if (op_data == NULL)
2226                 return ERR_PTR(-ENOMEM);
2227
2228         ll_i2gids(op_data->op_suppgids, i1, i2);
2229         op_data->op_fid1 = *ll_inode2fid(i1);
2230         op_data->op_capa1 = ll_mdscapa_get(i1);
2231
2232         if (i2) {
2233                 op_data->op_fid2 = *ll_inode2fid(i2);
2234                 op_data->op_capa2 = ll_mdscapa_get(i2);
2235         } else {
2236                 fid_zero(&op_data->op_fid2);
2237                 op_data->op_capa2 = NULL;
2238         }
2239
2240         op_data->op_name = name;
2241         op_data->op_namelen = namelen;
2242         op_data->op_mode = mode;
2243         op_data->op_mod_time = cfs_time_current_sec();
2244         op_data->op_fsuid = cfs_curproc_fsuid();
2245         op_data->op_fsgid = cfs_curproc_fsgid();
2246         op_data->op_cap = cfs_curproc_cap_pack();
2247         op_data->op_bias = MDS_CHECK_SPLIT;
2248         op_data->op_opc = opc;
2249         op_data->op_mds = 0;
2250         op_data->op_data = data;
2251
2252         /* If the file is being opened after mknod() (normally due to NFS)
2253          * try to use the default stripe data from parent directory for
2254          * allocating OST objects.  Try to pass the parent FID to MDS. */
2255         if (opc == LUSTRE_OPC_CREATE && i1 == i2 && S_ISREG(i2->i_mode) &&
2256             ll_i2info(i2)->lli_smd == NULL) {
2257                 struct ll_inode_info *lli = ll_i2info(i2);
2258
2259                 cfs_spin_lock(&lli->lli_lock);
2260                 if (likely(lli->lli_smd == NULL &&
2261                            !fid_is_zero(&lli->lli_pfid)))
2262                         op_data->op_fid1 = lli->lli_pfid;
2263                 cfs_spin_unlock(&lli->lli_lock);
2264                 /** We ignore parent's capability temporary. */
2265         }
2266
2267         return op_data;
2268 }
2269
2270 void ll_finish_md_op_data(struct md_op_data *op_data)
2271 {
2272         capa_put(op_data->op_capa1);
2273         capa_put(op_data->op_capa2);
2274         OBD_FREE_PTR(op_data);
2275 }
2276
2277 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2278 {
2279         struct ll_sb_info *sbi;
2280
2281         LASSERT((seq != NULL) && (vfs != NULL));
2282         sbi = ll_s2sbi(vfs->mnt_sb);
2283
2284         if (sbi->ll_flags & LL_SBI_NOLCK)
2285                 seq_puts(seq, ",nolock");
2286
2287         if (sbi->ll_flags & LL_SBI_FLOCK)
2288                 seq_puts(seq, ",flock");
2289
2290         if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2291                 seq_puts(seq, ",localflock");
2292
2293         if (sbi->ll_flags & LL_SBI_USER_XATTR)
2294                 seq_puts(seq, ",user_xattr");
2295
2296         if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2297                 seq_puts(seq, ",lazystatfs");
2298
2299         RETURN(0);
2300 }
2301
2302 /**
2303  * Get obd name by cmd, and copy out to user space
2304  */
2305 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2306 {
2307         struct ll_sb_info *sbi = ll_i2sbi(inode);
2308         struct obd_device *obd;
2309         ENTRY;
2310
2311         if (cmd == OBD_IOC_GETDTNAME)
2312                 obd = class_exp2obd(sbi->ll_dt_exp);
2313         else if (cmd == OBD_IOC_GETMDNAME)
2314                 obd = class_exp2obd(sbi->ll_md_exp);
2315         else
2316                 RETURN(-EINVAL);
2317
2318         if (!obd)
2319                 RETURN(-ENOENT);
2320
2321         if (cfs_copy_to_user((void *)arg, obd->obd_name,
2322                              strlen(obd->obd_name) + 1))
2323                 RETURN(-EFAULT);
2324
2325         RETURN(0);
2326 }