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LU-744 llite: reimplement ll_get_fsname()
[fs/lustre-release.git] / lustre / llite / llite_lib.c
index 8f03c8e..08936e2 100644 (file)
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 cfs_mem_cache_t *ll_file_data_slab;
 
 CFS_LIST_HEAD(ll_super_blocks);
-cfs_spinlock_t ll_sb_lock = CFS_SPIN_LOCK_UNLOCKED;
+DEFINE_SPINLOCK(ll_sb_lock);
 
 #ifndef MS_HAS_NEW_AOPS
 extern struct address_space_operations ll_aops;
-extern struct address_space_operations ll_dir_aops;
 #else
 extern struct address_space_operations_ext ll_aops;
-extern struct address_space_operations_ext ll_dir_aops;
 #endif
 
 #ifndef log2
@@ -216,7 +212,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                                   OBD_CONNECT_AT       | OBD_CONNECT_LOV_V3   |
                                   OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR    |
                                   OBD_CONNECT_FULL20   | OBD_CONNECT_64BITHASH|
-                                  OBD_CONNECT_EINPROGRESS;
+                                 OBD_CONNECT_EINPROGRESS |
+                                 OBD_CONNECT_JOBSTATS;
 
         if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
                 data->ocd_connect_flags |= OBD_CONNECT_SOM;
@@ -228,6 +225,12 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
 #ifdef CONFIG_FS_POSIX_ACL
         data->ocd_connect_flags |= OBD_CONNECT_ACL;
 #endif
+
+       if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
+               /* flag mdc connection as lightweight, only used for test
+                * purpose, use with care */
+                data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
+
         data->ocd_ibits_known = MDS_INODELOCK_FULL;
         data->ocd_version = LUSTRE_VERSION_CODE;
 
@@ -277,7 +280,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                 GOTO(out_md, err);
         }
 
-        err = obd_statfs(obd, osfs,
+        err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
                          cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 0);
         if (err)
                 GOTO(out_md_fid, err);
@@ -307,7 +310,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
         }
 
         size = sizeof(*data);
-        err = obd_get_info(sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
+        err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
                            KEY_CONN_DATA,  &size, data, NULL);
         if (err) {
                 CERROR("Get connect data failed: %d \n", err);
@@ -373,6 +376,11 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
         else
                 sbi->ll_md_brw_size = CFS_PAGE_SIZE;
 
+       if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK) {
+               LCONSOLE_INFO("Layout lock feature supported.\n");
+               sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
+       }
+
         obd = class_name2obd(dt);
         if (!obd) {
                 CERROR("DT %s: not setup or attached\n", dt);
@@ -387,7 +395,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                                   OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
                                   OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
                                   OBD_CONNECT_MAXBYTES |
-                                  OBD_CONNECT_EINPROGRESS;
+                                 OBD_CONNECT_EINPROGRESS |
+                                 OBD_CONNECT_JOBSTATS;
 
         if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
                 data->ocd_connect_flags |= OBD_CONNECT_SOM;
@@ -399,10 +408,10 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                  * agreement on the supported algorithms at connect time */
                 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
 
-                if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
-                        data->ocd_cksum_types = OBD_CKSUM_ADLER;
-                else
-                        data->ocd_cksum_types = cksum_types_supported();
+               if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
+                       data->ocd_cksum_types = OBD_CKSUM_ADLER;
+               else
+                       data->ocd_cksum_types = cksum_types_supported_client();
         }
 
 #ifdef HAVE_LRU_RESIZE_SUPPORT
@@ -458,7 +467,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
         CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
 
         sb->s_op = &lustre_super_operations;
-#if THREAD_SIZE >= 8192
+#if THREAD_SIZE >= 8192 /*b=17630*/
         sb->s_export_op = &lustre_export_operations;
 #endif
 
@@ -529,13 +538,19 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
 #endif
 
         checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
-        err = obd_set_info_async(sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
+        err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
                                  KEY_CHECKSUM, sizeof(checksum), &checksum,
                                  NULL);
         cl_sb_init(sb);
 
         sb->s_root = d_alloc_root(root);
-        sb->s_root->d_op = &ll_d_root_ops;
+#ifdef HAVE_DCACHE_LOCK
+       sb->s_root->d_op = &ll_d_root_ops;
+#else
+       /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
+       d_set_d_op(sb->s_root, &ll_d_root_ops);
+       sb->s_d_op = &ll_d_ops;
+#endif
 
         sbi->ll_sdev_orig = sb->s_dev;
 
@@ -547,7 +562,6 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
         uuid = obd_get_uuid(sbi->ll_md_exp);
         if (uuid != NULL)
                 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
-        sbi->ll_mnt = mnt;
 
         if (data != NULL)
                 OBD_FREE_PTR(data);
@@ -583,7 +597,7 @@ int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
 
         *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
         size = sizeof(int);
-        rc = obd_get_info(sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
+        rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
                           KEY_MAX_EASIZE, &size, lmmsize, NULL);
         if (rc)
                 CERROR("Get max mdsize error rc %d \n", rc);
@@ -620,7 +634,7 @@ void lustre_dump_dentry(struct dentry *dentry, int recur)
                " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
                dentry->d_name.len, dentry->d_name.name,
                dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
-               dentry->d_parent, dentry->d_inode, atomic_read(&dentry->d_count),
+              dentry->d_parent, dentry->d_inode, d_refcount(dentry),
                dentry->d_flags, dentry->d_fsdata, subdirs);
         if (dentry->d_inode != NULL)
                 ll_dump_inode(dentry->d_inode);
@@ -628,10 +642,10 @@ void lustre_dump_dentry(struct dentry *dentry, int recur)
         if (recur == 0)
                 return;
 
-       list_for_each(tmp, &dentry->d_subdirs) {
-                struct dentry *d = list_entry(tmp, struct dentry, d_child);
-                lustre_dump_dentry(d, recur - 1);
-        }
+       list_for_each(tmp, &dentry->d_subdirs) {
+               struct dentry *d = list_entry(tmp, struct dentry, d_u.d_child);
+               lustre_dump_dentry(d, recur - 1);
+       }
 }
 
 void client_common_put_super(struct super_block *sb)
@@ -762,7 +776,7 @@ static int ll_options(char *options, int *flags)
                         *flags &= ~tmp;
                         goto next;
                 }
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,5,50,0)
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 5, 50, 0)
                 tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
                 if (tmp) {
                         /* Ignore deprecated mount option.  The client will
@@ -786,6 +800,16 @@ static int ll_options(char *options, int *flags)
                         *flags |= tmp;
                         goto next;
                 }
+               tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
+               if (tmp) {
+                       *flags |= tmp;
+                       goto next;
+               }
+               tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
+               if (tmp) {
+                       *flags &= ~tmp;
+                       goto next;
+               }
 
                 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
                 if (tmp) {
@@ -877,7 +901,7 @@ void ll_lli_init(struct ll_inode_info *lli)
         lli->lli_open_fd_exec_count = 0;
         cfs_mutex_init(&lli->lli_och_mutex);
         cfs_spin_lock_init(&lli->lli_agl_lock);
-        lli->lli_smd = NULL;
+       lli->lli_has_smd = false;
         lli->lli_clob = NULL;
 
         LASSERT(lli->lli_vfs_inode.i_mode != 0);
@@ -885,7 +909,6 @@ void ll_lli_init(struct ll_inode_info *lli)
                 cfs_mutex_init(&lli->lli_readdir_mutex);
                 lli->lli_opendir_key = NULL;
                 lli->lli_sai = NULL;
-                lli->lli_sa_pos = 0;
                 lli->lli_def_acl = NULL;
                 cfs_spin_lock_init(&lli->lli_sa_lock);
                 lli->lli_opendir_pid = 0;
@@ -895,13 +918,13 @@ void ll_lli_init(struct ll_inode_info *lli)
                 lli->lli_symlink_name = NULL;
                 cfs_init_rwsem(&lli->lli_trunc_sem);
                 cfs_mutex_init(&lli->lli_write_mutex);
-                lli->lli_async_rc = 0;
-                lli->lli_write_rc = 0;
-                cfs_init_rwsem(&lli->lli_glimpse_sem);
-                lli->lli_glimpse_time = 0;
-                CFS_INIT_LIST_HEAD(&lli->lli_agl_list);
-                lli->lli_agl_index = 0;
-        }
+               cfs_init_rwsem(&lli->lli_glimpse_sem);
+               lli->lli_glimpse_time = 0;
+               CFS_INIT_LIST_HEAD(&lli->lli_agl_list);
+               lli->lli_agl_index = 0;
+               lli->lli_async_rc = 0;
+       }
+       cfs_mutex_init(&lli->lli_layout_mutex);
 }
 
 static inline int ll_bdi_register(struct backing_dev_info *bdi)
@@ -970,7 +993,7 @@ int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
            Use the address of the super itself.*/
         cfg->cfg_instance = sb;
         cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
-
+       cfg->cfg_callback = class_config_llog_handler;
         /* set up client obds */
         err = lustre_process_log(sb, profilenm, cfg);
         if (err < 0) {
@@ -1182,14 +1205,9 @@ void ll_clear_inode(struct inode *inode)
          * cl_object still uses inode lsm.
          */
         cl_inode_fini(inode);
+       lli->lli_has_smd = false;
 
-        if (lli->lli_smd) {
-                obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
-                lli->lli_smd = NULL;
-        }
-
-
-        EXIT;
+       EXIT;
 }
 
 int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
@@ -1308,6 +1326,50 @@ static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
         return rc;
 }
 
+#ifndef HAVE_VFS_INODE_NEWSIZE_OK
+/**
+ * inode_newsize_ok - may this inode be truncated to a given size
+ * @inode:      the inode to be truncated
+ * @offset:     the new size to assign to the inode
+ * @Returns:    0 on success, -ve errno on failure
+ *
+ * inode_newsize_ok will check filesystem limits and ulimits to check that the
+ * new inode size is within limits. inode_newsize_ok will also send SIGXFSZ
+ * when necessary. Caller must not proceed with inode size change if failure is
+ * returned. @inode must be a file (not directory), with appropriate
+ * permissions to allow truncate (inode_newsize_ok does NOT check these
+ * conditions).
+ *
+ * inode_newsize_ok must be called with i_mutex held.
+ */
+int inode_newsize_ok(const struct inode *inode, loff_t offset)
+{
+       if (inode->i_size < offset) {
+               unsigned long limit;
+
+               limit = rlimit(RLIMIT_FSIZE);
+               if (limit != RLIM_INFINITY && offset > limit)
+                       goto out_sig;
+               if (offset > inode->i_sb->s_maxbytes)
+                       goto out_big;
+       } else {
+               /*
+                * truncation of in-use swapfiles is disallowed - it would
+                * cause subsequent swapout to scribble on the now-freed
+                * blocks.
+                */
+               if (IS_SWAPFILE(inode))
+                       return -ETXTBSY;
+       }
+
+       return 0;
+out_sig:
+       send_sig(SIGXFSZ, current, 0);
+out_big:
+       return -EFBIG;
+}
+#endif
+
 /* If this inode has objects allocated to it (lsm != NULL), then the OST
  * object(s) determine the file size and mtime.  Otherwise, the MDS will
  * keep these values until such a time that objects are allocated for it.
@@ -1323,9 +1385,9 @@ static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
  */
 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr)
 {
+       struct lov_stripe_md *lsm;
         struct inode *inode = dentry->d_inode;
         struct ll_inode_info *lli = ll_i2info(inode);
-        struct lov_stripe_md *lsm = lli->lli_smd;
         struct md_op_data *op_data = NULL;
         struct md_open_data *mod = NULL;
         int ia_valid = attr->ia_valid;
@@ -1380,11 +1442,6 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr)
                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
                        cfs_time_current_sec());
 
-        /* NB: ATTR_SIZE will only be set after this point if the size
-         * resides on the MDS, ie, this file has no objects. */
-        if (lsm)
-                attr->ia_valid &= ~ATTR_SIZE;
-
         /* We always do an MDS RPC, even if we're only changing the size;
          * only the MDS knows whether truncate() should fail with -ETXTBUSY */
 
@@ -1392,15 +1449,24 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr)
         if (op_data == NULL)
                 RETURN(-ENOMEM);
 
-        if (!S_ISDIR(inode->i_mode)) {
-                if (ia_valid & ATTR_SIZE)
-                        UP_WRITE_I_ALLOC_SEM(inode);
-                UNLOCK_INODE_MUTEX(inode);
-                cfs_down_write(&lli->lli_trunc_sem);
-                LOCK_INODE_MUTEX(inode);
-                if (ia_valid & ATTR_SIZE)
-                        DOWN_WRITE_I_ALLOC_SEM(inode);
-        }
+       if (!S_ISDIR(inode->i_mode)) {
+               if (ia_valid & ATTR_SIZE)
+                       UP_WRITE_I_ALLOC_SEM(inode);
+               mutex_unlock(&inode->i_mutex);
+               cfs_down_write(&lli->lli_trunc_sem);
+               mutex_lock(&inode->i_mutex);
+               if (ia_valid & ATTR_SIZE)
+                       DOWN_WRITE_I_ALLOC_SEM(inode);
+       }
+
+       /* We need a steady stripe configuration for setattr to avoid
+        * confusion. */
+       lsm = ccc_inode_lsm_get(inode);
+
+       /* NB: ATTR_SIZE will only be set after this point if the size
+        * resides on the MDS, ie, this file has no objects. */
+       if (lsm != NULL)
+               attr->ia_valid &= ~ATTR_SIZE;
 
         memcpy(&op_data->op_attr, attr, sizeof(*attr));
 
@@ -1414,7 +1480,7 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr)
                 GOTO(out, rc);
 
         ll_ioepoch_open(lli, op_data->op_ioepoch);
-        if (!lsm || !S_ISREG(inode->i_mode)) {
+       if (lsm == NULL || !S_ISREG(inode->i_mode)) {
                 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
                 GOTO(out, rc = 0);
         }
@@ -1433,6 +1499,7 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr)
                 rc = ll_setattr_ost(inode, attr);
         EXIT;
 out:
+       ccc_inode_lsm_put(inode, lsm);
         if (op_data) {
                 if (op_data->op_ioepoch) {
                         rc1 = ll_setattr_done_writing(inode, op_data, mod);
@@ -1486,7 +1553,7 @@ int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
         int rc;
         ENTRY;
 
-        rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, flags);
+        rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
         if (rc) {
                 CERROR("md_statfs fails: rc = %d\n", rc);
                 RETURN(rc);
@@ -1500,8 +1567,7 @@ int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
         if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
                 flags |= OBD_STATFS_NODELAY;
 
-        rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
-                              &obd_osfs, max_age, flags);
+        rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
         if (rc) {
                 CERROR("obd_statfs fails: rc = %d\n", rc);
                 RETURN(rc);
@@ -1528,16 +1594,11 @@ int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
 
         RETURN(rc);
 }
-#ifndef HAVE_STATFS_DENTRY_PARAM
-int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
-{
-#else
 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
 {
-        struct super_block *sb = de->d_sb;
-#endif
-        struct obd_statfs osfs;
-        int rc;
+       struct super_block *sb = de->d_sb;
+       struct obd_statfs osfs;
+       int rc;
 
         CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
         ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
@@ -1572,10 +1633,9 @@ int ll_statfs(struct dentry *de, struct kstatfs *sfs)
         return 0;
 }
 
-void ll_inode_size_lock(struct inode *inode, int lock_lsm)
+void ll_inode_size_lock(struct inode *inode)
 {
         struct ll_inode_info *lli;
-        struct lov_stripe_md *lsm;
 
         LASSERT(!S_ISDIR(inode->i_mode));
 
@@ -1584,24 +1644,13 @@ void ll_inode_size_lock(struct inode *inode, int lock_lsm)
         cfs_down(&lli->lli_size_sem);
         LASSERT(lli->lli_size_sem_owner == NULL);
         lli->lli_size_sem_owner = current;
-        lsm = lli->lli_smd;
-        LASSERTF(lsm != NULL || lock_lsm == 0, "lsm %p, lock_lsm %d\n",
-                 lsm, lock_lsm);
-        if (lock_lsm)
-                lov_stripe_lock(lsm);
 }
 
-void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
+void ll_inode_size_unlock(struct inode *inode)
 {
         struct ll_inode_info *lli;
-        struct lov_stripe_md *lsm;
 
         lli = ll_i2info(inode);
-        lsm = lli->lli_smd;
-        LASSERTF(lsm != NULL || unlock_lsm == 0, "lsm %p, lock_lsm %d\n",
-                 lsm, unlock_lsm);
-        if (unlock_lsm)
-                lov_stripe_unlock(lsm);
         LASSERT(lli->lli_size_sem_owner == current);
         lli->lli_size_sem_owner = NULL;
         cfs_up(&lli->lli_size_sem);
@@ -1609,54 +1658,31 @@ void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
 
 void ll_update_inode(struct inode *inode, struct lustre_md *md)
 {
-        struct ll_inode_info *lli = ll_i2info(inode);
-        struct mdt_body *body = md->body;
-        struct lov_stripe_md *lsm = md->lsm;
-        struct ll_sb_info *sbi = ll_i2sbi(inode);
-
-        LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
-        if (lsm != NULL) {
-                LASSERT(S_ISREG(inode->i_mode));
-
-                cfs_mutex_lock(&lli->lli_och_mutex);
-                if (lli->lli_smd == NULL) {
-                        if (lsm->lsm_magic != LOV_MAGIC_V1 &&
-                            lsm->lsm_magic != LOV_MAGIC_V3) {
-                                dump_lsm(D_ERROR, lsm);
-                                LBUG();
-                        }
-                        CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
-                               lsm, inode->i_ino, inode->i_generation, inode);
-                        /* cl_file_inode_init must go before lli_smd or a race
-                         * is possible where client thinks the file has stripes,
-                         * but lov raid0 is not setup yet and parallel e.g.
-                         * glimpse would try to use uninitialized lov */
-                        cl_file_inode_init(inode, md);
-                        cfs_spin_lock(&lli->lli_lock);
-                        lli->lli_smd = lsm;
-                        cfs_spin_unlock(&lli->lli_lock);
-                        cfs_mutex_unlock(&lli->lli_och_mutex);
-                        lli->lli_maxbytes = lsm->lsm_maxbytes;
-                        if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
-                                lli->lli_maxbytes = MAX_LFS_FILESIZE;
-                } else {
-                        cfs_mutex_unlock(&lli->lli_och_mutex);
-                        LASSERT(lli->lli_smd->lsm_magic == lsm->lsm_magic &&
-                                lli->lli_smd->lsm_stripe_count ==
-                                lsm->lsm_stripe_count);
-                        if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
-                                CERROR("lsm mismatch for inode %ld\n",
-                                       inode->i_ino);
-                                CERROR("lli_smd:\n");
-                                dump_lsm(D_ERROR, lli->lli_smd);
-                                CERROR("lsm:\n");
-                                dump_lsm(D_ERROR, lsm);
-                                LBUG();
-                        }
-                }
-                if (lli->lli_smd != lsm)
-                        obd_free_memmd(ll_i2dtexp(inode), &lsm);
-        }
+       struct ll_inode_info *lli = ll_i2info(inode);
+       struct mdt_body *body = md->body;
+       struct lov_stripe_md *lsm = md->lsm;
+       struct ll_sb_info *sbi = ll_i2sbi(inode);
+
+       LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
+       if (lsm != NULL) {
+               LASSERT(S_ISREG(inode->i_mode));
+               cfs_mutex_lock(&lli->lli_och_mutex);
+               CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
+                               lsm, inode->i_ino, inode->i_generation, inode);
+               /* cl_file_inode_init must go before lli_has_smd or a race
+                * is possible where client thinks the file has stripes,
+                * but lov raid0 is not setup yet and parallel e.g.
+                * glimpse would try to use uninitialized lov */
+               if (cl_file_inode_init(inode, md) == 0)
+                       lli->lli_has_smd = true;
+               cfs_mutex_unlock(&lli->lli_och_mutex);
+
+               lli->lli_maxbytes = lsm->lsm_maxbytes;
+               if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
+                       lli->lli_maxbytes = MAX_LFS_FILESIZE;
+               if (md->lsm != NULL)
+                       obd_free_memmd(ll_i2dtexp(inode), &md->lsm);
+       }
 
         if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
                 if (body->valid & OBD_MD_FLRMTPERM)
@@ -1703,9 +1729,6 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
         } else {
                 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
         }
-#ifdef HAVE_INODE_BLKSIZE
-        inode->i_blksize = 1<<inode->i_blkbits;
-#endif
         if (body->valid & OBD_MD_FLUID)
                 inode->i_uid = body->uid;
         if (body->valid & OBD_MD_FLGID)
@@ -1733,7 +1756,7 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
 
         if (body->valid & OBD_MD_FLSIZE) {
                 if (exp_connect_som(ll_i2mdexp(inode)) &&
-                    S_ISREG(inode->i_mode) && lli->lli_smd) {
+                   S_ISREG(inode->i_mode) && lli->lli_has_smd) {
                         struct lustre_handle lockh;
                         ldlm_mode_t mode;
 
@@ -1791,7 +1814,7 @@ void ll_read_inode2(struct inode *inode, void *opaque)
         CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
                PFID(&lli->lli_fid), inode);
 
-        LASSERT(!lli->lli_smd);
+       LASSERT(!lli->lli_has_smd);
 
         /* Core attributes from the MDS first.  This is a new inode, and
          * the VFS doesn't zero times in the core inode so we have to do
@@ -1818,7 +1841,6 @@ void ll_read_inode2(struct inode *inode, void *opaque)
         } else if (S_ISDIR(inode->i_mode)) {
                 inode->i_op = &ll_dir_inode_operations;
                 inode->i_fop = &ll_dir_operations;
-                inode->i_mapping->a_ops = (struct address_space_operations *)&ll_dir_aops;
                 EXIT;
         } else if (S_ISLNK(inode->i_mode)) {
                 inode->i_op = &ll_fast_symlink_inode_operations;
@@ -1835,13 +1857,19 @@ void ll_read_inode2(struct inode *inode, void *opaque)
 
 void ll_delete_inode(struct inode *inode)
 {
-        struct ll_sb_info *sbi = ll_i2sbi(inode);
-        int rc;
-        ENTRY;
+       struct cl_inode_info *lli = cl_i2info(inode);
+       struct ll_sb_info    *sbi = ll_i2sbi(inode);
+       int rc;
+       ENTRY;
 
-        rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
-        if (rc)
-                CERROR("fid_delete() failed, rc %d\n", rc);
+       rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
+       if (rc)
+               CERROR("fid_delete() failed, rc %d\n", rc);
+
+       if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
+               /* discard all dirty pages before truncating them, required by
+                * osc_extent implementation at LU-1030. */
+               cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_DISCARD);
 
         truncate_inode_pages(&inode->i_data, 0);
 
@@ -1903,18 +1931,13 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                 RETURN(put_user(flags, (int *)arg));
         }
         case FSFILT_IOC_SETFLAGS: {
-                struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
+               struct lov_stripe_md *lsm;
                 struct obd_info oinfo = { { { 0 } } };
                 struct md_op_data *op_data;
 
                 if (get_user(flags, (int *)arg))
                         RETURN(-EFAULT);
 
-                oinfo.oi_md = lsm;
-                OBDO_ALLOC(oinfo.oi_oa);
-                if (!oinfo.oi_oa)
-                        RETURN(-ENOMEM);
-
                 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
                                              LUSTRE_OPC_ANY, NULL);
                 if (IS_ERR(op_data))
@@ -1926,16 +1949,21 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                                 NULL, 0, NULL, 0, &req, NULL);
                 ll_finish_md_op_data(op_data);
                 ptlrpc_req_finished(req);
-                if (rc) {
-                        OBDO_FREE(oinfo.oi_oa);
-                        RETURN(rc);
-                }
+               if (rc)
+                       RETURN(rc);
 
-                if (lsm == NULL) {
-                        OBDO_FREE(oinfo.oi_oa);
-                        GOTO(update_cache, rc);
-                }
+               OBDO_ALLOC(oinfo.oi_oa);
+               if (!oinfo.oi_oa)
+                       RETURN(-ENOMEM);
 
+               lsm = ccc_inode_lsm_get(inode);
+               if (lsm == NULL) {
+                       inode->i_flags = ll_ext_to_inode_flags(flags);
+                       OBDO_FREE(oinfo.oi_oa);
+                       RETURN(0);
+               }
+
+               oinfo.oi_md = lsm;
                 oinfo.oi_oa->o_id = lsm->lsm_object_id;
                 oinfo.oi_oa->o_seq = lsm->lsm_object_seq;
                 oinfo.oi_oa->o_flags = flags;
@@ -1946,16 +1974,12 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
                 capa_put(oinfo.oi_capa);
                 OBDO_FREE(oinfo.oi_oa);
-                if (rc) {
-                        if (rc != -EPERM && rc != -EACCES)
-                                CERROR("osc_setattr_async fails: rc = %d\n",rc);
-                        RETURN(rc);
-                }
+               ccc_inode_lsm_put(inode, lsm);
 
-                EXIT;
-update_cache:
-                inode->i_flags = ll_ext_to_inode_flags(flags);
-                return 0;
+               if (rc && rc != -EPERM && rc != -EACCES)
+                       CERROR("osc_setattr_async fails: rc = %d\n", rc);
+
+               RETURN(rc);
         }
         default:
                 RETURN(-ENOSYS);
@@ -1970,10 +1994,10 @@ int ll_flush_ctx(struct inode *inode)
 
         CDEBUG(D_SEC, "flush context for user %d\n", cfs_curproc_uid());
 
-        obd_set_info_async(sbi->ll_md_exp,
+        obd_set_info_async(NULL, sbi->ll_md_exp,
                            sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
                            0, NULL, NULL);
-        obd_set_info_async(sbi->ll_dt_exp,
+        obd_set_info_async(NULL, sbi->ll_dt_exp,
                            sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
                            0, NULL, NULL);
         return 0;
@@ -1988,7 +2012,6 @@ void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
 void ll_umount_begin(struct super_block *sb)
 {
 #endif
-        struct lustre_sb_info *lsi = s2lsi(sb);
         struct ll_sb_info *sbi = ll_s2sbi(sb);
         struct obd_device *obd;
         struct obd_ioctl_data *ioc_data;
@@ -2001,9 +2024,6 @@ void ll_umount_begin(struct super_block *sb)
         }
 #endif
 
-        /* Tell the MGC we got umount -f */
-        lsi->lsi_flags |= LSI_UMOUNT_FORCE;
-
         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
                sb->s_count, atomic_read(&sb->s_active));
 
@@ -2065,7 +2085,7 @@ int ll_remount_fs(struct super_block *sb, int *flags, char *data)
 
         if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
                 read_only = *flags & MS_RDONLY;
-                err = obd_set_info_async(sbi->ll_md_exp,
+                err = obd_set_info_async(NULL, sbi->ll_md_exp,
                                          sizeof(KEY_READ_ONLY),
                                          KEY_READ_ONLY, sizeof(read_only),
                                          &read_only, NULL);
@@ -2092,8 +2112,9 @@ int ll_prep_inode(struct inode **inode,
                   struct ptlrpc_request *req,
                   struct super_block *sb)
 {
-        struct ll_sb_info *sbi = NULL;
-        struct lustre_md md;
+       struct ll_sb_info *sbi = NULL;
+       struct lustre_md md;
+       __u64 ibits;
         int rc;
         ENTRY;
 
@@ -2132,9 +2153,18 @@ int ll_prep_inode(struct inode **inode,
                 }
         }
 
+       /* sanity check for LAYOUT lock. */
+       ibits = MDS_INODELOCK_LAYOUT;
+       if (S_ISREG(md.body->mode) && sbi->ll_flags & LL_SBI_LAYOUT_LOCK &&
+           md.lsm != NULL && !ll_have_md_lock(*inode, &ibits, LCK_MINMODE)) {
+               CERROR("%s: inode "DFID" (%p) layout lock not granted.\n",
+                       ll_get_fsname(sb, NULL, 0),
+                       PFID(ll_inode2fid(*inode)), *inode);
+       }
+
 out:
-        md_free_lustre_md(sbi->ll_md_exp, &md);
-        RETURN(rc);
+       md_free_lustre_md(sbi->ll_md_exp, &md);
+       RETURN(rc);
 }
 
 int ll_obd_statfs(struct inode *inode, void *arg)
@@ -2144,6 +2174,7 @@ int ll_obd_statfs(struct inode *inode, void *arg)
         char *buf = NULL;
         struct obd_ioctl_data *data = NULL;
         __u32 type;
+       __u32 flags;
         int len = 0, rc;
 
         if (!inode || !(sbi = ll_i2sbi(inode)))
@@ -2165,14 +2196,15 @@ int ll_obd_statfs(struct inode *inode, void *arg)
                 GOTO(out_statfs, rc = -EINVAL);
 
         memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
-        if (type == LL_STATFS_LMV)
+       if (type & LL_STATFS_LMV)
                 exp = sbi->ll_md_exp;
-        else if (type == LL_STATFS_LOV)
+       else if (type & LL_STATFS_LOV)
                 exp = sbi->ll_dt_exp;
         else
                 GOTO(out_statfs, rc = -ENODEV);
 
-        rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
+       flags = (type & LL_STATFS_NODELAY) ? OBD_STATFS_NODELAY : 0;
+       rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, &flags);
         if (rc)
                 GOTO(out_statfs, rc);
 out_statfs:
@@ -2255,12 +2287,11 @@ struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
          * try to use the default stripe data from parent directory for
          * allocating OST objects.  Try to pass the parent FID to MDS. */
         if (opc == LUSTRE_OPC_CREATE && i1 == i2 && S_ISREG(i2->i_mode) &&
-            ll_i2info(i2)->lli_smd == NULL) {
-                struct ll_inode_info *lli = ll_i2info(i2);
+           !ll_i2info(i2)->lli_has_smd) {
+               struct ll_inode_info *lli = ll_i2info(i2);
 
-                cfs_spin_lock(&lli->lli_lock);
-                if (likely(lli->lli_smd == NULL &&
-                           !fid_is_zero(&lli->lli_pfid)))
+               cfs_spin_lock(&lli->lli_lock);
+               if (likely(!lli->lli_has_smd && !fid_is_zero(&lli->lli_pfid)))
                         op_data->op_fid1 = lli->lli_pfid;
                 cfs_spin_unlock(&lli->lli_lock);
                 /** We ignore parent's capability temporary. */
@@ -2298,6 +2329,9 @@ int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
         if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
                 seq_puts(seq, ",lazystatfs");
 
+       if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
+               seq_puts(seq, ",user_fid2path");
+
         RETURN(0);
 }
 
@@ -2326,3 +2360,36 @@ int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
 
         RETURN(0);
 }
+
+/**
+ * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
+ * fsname will be returned in this buffer; otherwise, a static buffer will be
+ * used to store the fsname and returned to caller.
+ */
+char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
+{
+       static char fsname_static[MTI_NAME_MAXLEN];
+       struct lustre_sb_info *lsi = s2lsi(sb);
+       char *ptr;
+       int len;
+
+       if (buf == NULL) {
+               /* this means the caller wants to use static buffer
+                * and it doesn't care about race. Usually this is
+                * in error reporting path */
+               buf = fsname_static;
+               buflen = sizeof(fsname_static);
+       }
+
+       len = strlen(lsi->lsi_lmd->lmd_profile);
+       ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
+       if (ptr && (strcmp(ptr, "-client") == 0))
+               len -= 7;
+
+       if (unlikely(len >= buflen))
+               len = buflen - 1;
+       strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
+       buf[len] = '\0';
+
+       return buf;
+}