Whamcloud - gitweb
LU-359 llite: no close error if application has known failure
[fs/lustre-release.git] / lustre / llite / llite_lib.c
index 883f181..1457303 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.
@@ -28,9 +26,8 @@
 /*
  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
- */
-/*
- * Copyright (c) 2011 Whamcloud, Inc.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -62,7 +59,7 @@
 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;
@@ -90,7 +87,7 @@ static struct ll_sb_info *ll_init_sbi(void)
                 RETURN(NULL);
 
         cfs_spin_lock_init(&sbi->ll_lock);
-        cfs_init_mutex(&sbi->ll_lco.lco_lock);
+        cfs_mutex_init(&sbi->ll_lco.lco_lock);
         cfs_spin_lock_init(&sbi->ll_pp_extent_lock);
         cfs_spin_lock_init(&sbi->ll_process_lock);
         sbi->ll_rw_stats_on = 0;
@@ -123,6 +120,7 @@ static struct ll_sb_info *ll_init_sbi(void)
         cfs_list_add_tail(&sbi->ll_list, &ll_super_blocks);
         cfs_spin_unlock(&ll_sb_lock);
 
+        sbi->ll_flags |= LL_SBI_VERBOSE;
 #ifdef ENABLE_CHECKSUM
         sbi->ll_flags |= LL_SBI_CHECKSUM;
 #endif
@@ -142,6 +140,8 @@ static struct ll_sb_info *ll_init_sbi(void)
         sbi->ll_sa_max = LL_SA_RPC_DEF;
         cfs_atomic_set(&sbi->ll_sa_total, 0);
         cfs_atomic_set(&sbi->ll_sa_wrong, 0);
+        cfs_atomic_set(&sbi->ll_agl_total, 0);
+        sbi->ll_flags |= LL_SBI_AGL_ENABLED;
 
         RETURN(sbi);
 }
@@ -213,7 +213,9 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                                   OBD_CONNECT_CANCELSET | OBD_CONNECT_FID     |
                                   OBD_CONNECT_AT       | OBD_CONNECT_LOV_V3   |
                                   OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR    |
-                                  OBD_CONNECT_FULL20   | OBD_CONNECT_64BITHASH;
+                                  OBD_CONNECT_FULL20   | OBD_CONNECT_64BITHASH|
+                                 OBD_CONNECT_EINPROGRESS |
+                                 OBD_CONNECT_JOBSTATS;
 
         if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
                 data->ocd_connect_flags |= OBD_CONNECT_SOM;
@@ -274,7 +276,7 @@ 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);
@@ -304,7 +306,7 @@ 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);
@@ -315,20 +317,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
         sb->s_blocksize = osfs->os_bsize;
         sb->s_blocksize_bits = log2(osfs->os_bsize);
         sb->s_magic = LL_SUPER_MAGIC;
-
-        /* for bug 11559. in $LINUX/fs/read_write.c, function do_sendfile():
-         *         retval = in_file->f_op->sendfile(...);
-         *         if (*ppos > max)
-         *                 retval = -EOVERFLOW;
-         *
-         * it will check if *ppos is greater than max. However, max equals to
-         * s_maxbytes, which is a negative integer in a x86_64 box since loff_t
-         * has been defined as a signed long long integer in linux kernel. */
-#if BITS_PER_LONG == 64
-        sb->s_maxbytes = PAGE_CACHE_MAXBYTES >> 1;
-#else
-        sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
-#endif
+        sb->s_maxbytes = MAX_LFS_FILESIZE;
         sbi->ll_namelen = osfs->os_namelen;
         sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
 
@@ -383,6 +372,11 @@ 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);
@@ -396,7 +390,9 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                                   OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
                                   OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
                                   OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
-                                  OBD_CONNECT_MAXBYTES;
+                                  OBD_CONNECT_MAXBYTES |
+                                 OBD_CONNECT_EINPROGRESS |
+                                 OBD_CONNECT_JOBSTATS;
 
         if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
                 data->ocd_connect_flags |= OBD_CONNECT_SOM;
@@ -408,10 +404,10 @@ 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
@@ -448,11 +444,11 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                 GOTO(out_dt, err);
         }
 
-        cfs_mutex_down(&sbi->ll_lco.lco_lock);
+        cfs_mutex_lock(&sbi->ll_lco.lco_lock);
         sbi->ll_lco.lco_flags = data->ocd_connect_flags;
         sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
         sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
-        cfs_mutex_up(&sbi->ll_lco.lco_lock);
+        cfs_mutex_unlock(&sbi->ll_lco.lco_lock);
 
         fid_zero(&sbi->ll_root_fid);
         err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
@@ -467,7 +463,7 @@ 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*/ && !defined(HAVE_FSTYPE_MOUNT) /*LU-812*/
         sb->s_export_op = &lustre_export_operations;
 #endif
 
@@ -538,13 +534,19 @@ 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;
 
@@ -592,7 +594,7 @@ 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);
@@ -629,7 +631,7 @@ 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);
@@ -637,10 +639,10 @@ 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)
@@ -836,7 +838,16 @@ static int ll_options(char *options, int *flags)
                         *flags |= tmp;
                         goto next;
                 }
-
+                tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
+                if (tmp) {
+                        *flags |= tmp;
+                        goto next;
+                }
+                tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
+                if (tmp) {
+                        *flags &= ~tmp;
+                        goto next;
+                }
                 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
                                    s1);
                 RETURN(-EINVAL);
@@ -854,28 +865,54 @@ next:
 void ll_lli_init(struct ll_inode_info *lli)
 {
         lli->lli_inode_magic = LLI_INODE_MAGIC;
-        cfs_sema_init(&lli->lli_size_sem, 1);
-        cfs_sema_init(&lli->lli_write_sem, 1);
-        cfs_init_rwsem(&lli->lli_trunc_sem);
         lli->lli_flags = 0;
-        lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
+        lli->lli_ioepoch = 0;
+        lli->lli_maxbytes = MAX_LFS_FILESIZE;
         cfs_spin_lock_init(&lli->lli_lock);
+        lli->lli_posix_acl = NULL;
+        lli->lli_remote_perms = NULL;
+        cfs_mutex_init(&lli->lli_rmtperm_mutex);
+        /* Do not set lli_fid, it has been initialized already. */
+        fid_zero(&lli->lli_pfid);
         CFS_INIT_LIST_HEAD(&lli->lli_close_list);
-        lli->lli_inode_magic = LLI_INODE_MAGIC;
-        cfs_sema_init(&lli->lli_och_sem, 1);
-        lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
+        CFS_INIT_LIST_HEAD(&lli->lli_oss_capas);
+        cfs_atomic_set(&lli->lli_open_count, 0);
+        lli->lli_mds_capa = NULL;
+        lli->lli_rmtperm_time = 0;
+        lli->lli_pending_och = NULL;
+        lli->lli_mds_read_och = NULL;
+        lli->lli_mds_write_och = NULL;
         lli->lli_mds_exec_och = NULL;
-        lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
+        lli->lli_open_fd_read_count = 0;
+        lli->lli_open_fd_write_count = 0;
         lli->lli_open_fd_exec_count = 0;
-        CFS_INIT_LIST_HEAD(&lli->lli_dead_list);
-        lli->lli_remote_perms = NULL;
-        lli->lli_rmtperm_utime = 0;
-        cfs_sema_init(&lli->lli_rmtperm_sem, 1);
-        CFS_INIT_LIST_HEAD(&lli->lli_oss_capas);
-        cfs_spin_lock_init(&lli->lli_sa_lock);
+        cfs_mutex_init(&lli->lli_och_mutex);
+        cfs_spin_lock_init(&lli->lli_agl_lock);
+       lli->lli_has_smd = false;
         lli->lli_clob = NULL;
-        cfs_sema_init(&lli->lli_readdir_sem, 1);
-        fid_zero(&lli->lli_pfid);
+
+        LASSERT(lli->lli_vfs_inode.i_mode != 0);
+        if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
+                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;
+        } else {
+                cfs_sema_init(&lli->lli_size_sem, 1);
+                lli->lli_size_sem_owner = NULL;
+                lli->lli_symlink_name = NULL;
+                cfs_init_rwsem(&lli->lli_trunc_sem);
+                cfs_mutex_init(&lli->lli_write_mutex);
+               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)
@@ -883,7 +920,9 @@ static inline int ll_bdi_register(struct backing_dev_info *bdi)
 #ifdef HAVE_BDI_REGISTER
         static atomic_t ll_bdi_num = ATOMIC_INIT(0);
 
+#ifdef HAVE_BDI_NAME
         bdi->name = "lustre";
+#endif
         return bdi_register(bdi, NULL, "lustre-%d",
                             atomic_inc_return(&ll_bdi_num));
 #else
@@ -981,8 +1020,8 @@ out_free:
                 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
         if (err)
                 ll_put_super(sb);
-        else
-                LCONSOLE_WARN("Client %s has started\n", profilenm);
+        else if (sbi->ll_flags & LL_SBI_VERBOSE)
+                LCONSOLE_WARN("Mounted %s\n", profilenm);
 
         OBD_FREE_PTR(cfg);
         RETURN(err);
@@ -1034,6 +1073,9 @@ void ll_put_super(struct super_block *sb)
                 class_manual_cleanup(obd);
         }
 
+        if (sbi->ll_flags & LL_SBI_VERBOSE)
+                LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
+
         if (profilenm)
                 class_del_profile(profilenm);
 
@@ -1049,8 +1091,6 @@ void ll_put_super(struct super_block *sb)
 
         cl_env_cache_purge(~0);
 
-        LCONSOLE_WARN("client %p umount complete\n", cfg.cfg_instance);
-
         cfs_module_put(THIS_MODULE);
 
         EXIT;
@@ -1101,8 +1141,8 @@ void ll_clear_inode(struct inode *inode)
 
         if (S_ISDIR(inode->i_mode)) {
                 /* these should have been cleared in ll_file_release */
-                LASSERT(lli->lli_sai == NULL);
                 LASSERT(lli->lli_opendir_key == NULL);
+                LASSERT(lli->lli_sai == NULL);
                 LASSERT(lli->lli_opendir_pid == 0);
         }
 
@@ -1121,7 +1161,7 @@ void ll_clear_inode(struct inode *inode)
         if (lli->lli_mds_read_och)
                 ll_md_real_close(inode, FMODE_READ);
 
-        if (lli->lli_symlink_name) {
+        if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
                 OBD_FREE(lli->lli_symlink_name,
                          strlen(lli->lli_symlink_name) + 1);
                 lli->lli_symlink_name = NULL;
@@ -1145,28 +1185,27 @@ void ll_clear_inode(struct inode *inode)
         lli->lli_inode_magic = LLI_INODE_DEAD;
 
         ll_clear_inode_capas(inode);
+        if (!S_ISDIR(inode->i_mode))
+                LASSERT(cfs_list_empty(&lli->lli_agl_list));
+
         /*
          * XXX This has to be done before lsm is freed below, because
          * 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 inode *inode, struct md_op_data *op_data,
+int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
                   struct md_open_data **mod)
 {
         struct lustre_md md;
+        struct inode *inode = dentry->d_inode;
         struct ll_sb_info *sbi = ll_i2sbi(inode);
         struct ptlrpc_request *request = NULL;
-        int rc;
+        int rc, ia_valid;
         ENTRY;
 
         op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
@@ -1183,8 +1222,12 @@ int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
                         /* Unlinked special device node? Or just a race?
                          * Pretend we done everything. */
                         if (!S_ISREG(inode->i_mode) &&
-                            !S_ISDIR(inode->i_mode))
-                                rc = inode_setattr(inode, &op_data->op_attr);
+                            !S_ISDIR(inode->i_mode)) {
+                                ia_valid = op_data->op_attr.ia_valid;
+                                op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
+                                rc = simple_setattr(dentry, &op_data->op_attr);
+                                op_data->op_attr.ia_valid = ia_valid;
+                        }
                 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
                         CERROR("md_setattr fails: rc = %d\n", rc);
                 }
@@ -1198,12 +1241,16 @@ int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
                 RETURN(rc);
         }
 
-        /* We call inode_setattr to adjust timestamps.
+        /* We want to adjust timestamps.
          * If there is at least some data in file, we cleared ATTR_SIZE
-         * above to avoid invoking vmtruncate, otherwise it is important
-         * to call vmtruncate in inode_setattr to update inode->i_size
+         * to avoid update size, otherwise it is important to do.(SOM case)
          * (bug 6196) */
-        rc = inode_setattr(inode, &op_data->op_attr);
+        ia_valid = op_data->op_attr.ia_valid;
+        /* Since we set ATTR_*_SET flags above, and already done permission
+         * check, So don't let inode_change_ok() check it again.  */
+        op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
+        rc = simple_setattr(dentry, &op_data->op_attr);
+        op_data->op_attr.ia_valid = ia_valid;
 
         /* Extract epoch data if obtained. */
         op_data->op_handle = md.body->handle;
@@ -1267,6 +1314,50 @@ 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.
@@ -1280,10 +1371,11 @@ static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
  * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
  * at the same time.
  */
-int ll_setattr_raw(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;
@@ -1292,12 +1384,20 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
 
         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
                attr->ia_valid);
-        ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETATTR, 1);
 
         if (ia_valid & ATTR_SIZE) {
+                /* Check new size against VFS/VM file size limit and rlimit */
+                rc = inode_newsize_ok(inode, attr->ia_size);
+                if (rc)
+                        RETURN(rc);
+
+                /* The maximum Lustre file size is variable, based on the
+                 * OST maximum object size and number of stripes.  This
+                 * needs another check in addition to the VFS check above. */
                 if (attr->ia_size > ll_file_maxbytes(inode)) {
-                        CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
-                               attr->ia_size, ll_file_maxbytes(inode));
+                        CDEBUG(D_INODE,"file "DFID" too large %llu > "LPU64"\n",
+                               PFID(&lli->lli_fid), attr->ia_size,
+                               ll_file_maxbytes(inode));
                         RETURN(-EFBIG);
                 }
 
@@ -1305,7 +1405,7 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
         }
 
         /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
-        if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
+        if (ia_valid & TIMES_SET_FLAGS) {
                 if (cfs_curproc_fsuid() != inode->i_uid &&
                     !cfs_capable(CFS_CAP_FOWNER))
                         RETURN(-EPERM);
@@ -1330,11 +1430,6 @@ int ll_setattr_raw(struct inode *inode, 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 */
 
@@ -1342,13 +1437,24 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
         if (op_data == NULL)
                 RETURN(-ENOMEM);
 
-        UNLOCK_INODE_MUTEX(inode);
-        if (ia_valid & ATTR_SIZE)
-                UP_WRITE_I_ALLOC_SEM(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));
 
@@ -1357,12 +1463,12 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
             (ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
                 op_data->op_flags = MF_EPOCH_OPEN;
 
-        rc = ll_md_setattr(inode, op_data, &mod);
+        rc = ll_md_setattr(dentry, op_data, &mod);
         if (rc)
                 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);
         }
@@ -1372,22 +1478,31 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
         if (ia_valid & (ATTR_SIZE |
                         ATTR_ATIME | ATTR_ATIME_SET |
                         ATTR_MTIME | ATTR_MTIME_SET))
-                /* on truncate and utimes send attributes to osts, setting
-                 * mtime/atime to past will be performed under PW 0:EOF extent
-                 * lock (new_size:EOF for truncate)
-                 * it may seem excessive to send mtime/atime updates to osts
-                 * when not setting times to past, but it is necessary due to
-                 * possible time de-synchronization */
+                /* For truncate and utimes sending attributes to OSTs, setting
+                 * mtime/atime to the past will be performed under PW [0:EOF]
+                 * extent lock (new_size:EOF for truncate).  It may seem
+                 * excessive to send mtime/atime updates to OSTs when not
+                 * setting times to past, but it is necessary due to possible
+                 * time de-synchronization between MDT inode and OST objects */
                 rc = ll_setattr_ost(inode, attr);
         EXIT;
 out:
+       ccc_inode_lsm_put(inode, lsm);
         if (op_data) {
-                if (op_data->op_ioepoch)
+                if (op_data->op_ioepoch) {
                         rc1 = ll_setattr_done_writing(inode, op_data, mod);
+                        if (!rc)
+                                rc = rc1;
+                }
                 ll_finish_md_op_data(op_data);
         }
-        cfs_up_write(&lli->lli_trunc_sem);
-        return rc ? rc : rc1;
+        if (!S_ISDIR(inode->i_mode))
+                cfs_up_write(&lli->lli_trunc_sem);
+
+        ll_stats_ops_tally(ll_i2sbi(inode), (ia_valid & ATTR_SIZE) ?
+                           LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
+
+        return rc;
 }
 
 int ll_setattr(struct dentry *de, struct iattr *attr)
@@ -1415,7 +1530,7 @@ int ll_setattr(struct dentry *de, struct iattr *attr)
             !(attr->ia_valid & ATTR_KILL_SGID))
                 attr->ia_valid |= ATTR_KILL_SGID;
 
-        return ll_setattr_raw(de->d_inode, attr);
+        return ll_setattr_raw(de, attr);
 }
 
 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
@@ -1426,7 +1541,7 @@ 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);
@@ -1440,8 +1555,7 @@ 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);
@@ -1468,16 +1582,11 @@ 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);
@@ -1512,34 +1621,24 @@ 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));
 
         lli = ll_i2info(inode);
         LASSERT(lli->lli_size_sem_owner != current);
         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);
@@ -1547,52 +1646,31 @@ 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) {
-                cfs_down(&lli->lli_och_sem);
-                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_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_inode_init(inode, md);
-                        cfs_spin_lock(&lli->lli_lock);
-                        lli->lli_smd = lsm;
-                        cfs_spin_unlock(&lli->lli_lock);
-                        cfs_up(&lli->lli_och_sem);
-                        lli->lli_maxbytes = lsm->lsm_maxbytes;
-                        if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
-                                lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
-                } else {
-                        cfs_up(&lli->lli_och_sem);
-                        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)
@@ -1639,9 +1717,6 @@ 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)
@@ -1669,7 +1744,7 @@ 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;
 
@@ -1683,14 +1758,14 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
                                 if (lli->lli_flags & (LLIF_DONE_WRITING |
                                                       LLIF_EPOCH_PENDING |
                                                       LLIF_SOM_DIRTY)) {
-                                        CERROR("ino %lu flags %lu still has "
+                                        CERROR("ino %lu flags %u still has "
                                                "size authority! do not trust "
                                                "the size got from MDS\n",
                                                inode->i_ino, lli->lli_flags);
                                 } else {
                                         /* Use old size assignment to avoid
                                          * deadlock bz14138 & bz14326 */
-                                        inode->i_size = body->size;
+                                        i_size_write(inode, body->size);
                                         lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
                                 }
                                 ldlm_lock_decref(&lockh, mode);
@@ -1698,7 +1773,7 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
                 } else {
                         /* Use old size assignment to avoid
                          * deadlock bz14138 & bz14326 */
-                        inode->i_size = body->size;
+                        i_size_write(inode, body->size);
 
                         CDEBUG(D_VFSTRACE, "inode=%lu, updating i_size %llu\n",
                                inode->i_ino, (unsigned long long)body->size);
@@ -1727,9 +1802,7 @@ void ll_read_inode2(struct inode *inode, void *opaque)
         CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
                PFID(&lli->lli_fid), inode);
 
-        ll_lli_init(lli);
-
-        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
@@ -1773,13 +1846,19 @@ 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);
 
@@ -1795,7 +1874,12 @@ void ll_delete_inode(struct inode *inode)
         }
         /* Workaround end */
 
+#ifdef HAVE_SBOPS_EVICT_INODE
+        ll_clear_inode(inode);
+        end_writeback(inode);
+#else
         clear_inode(inode);
+#endif
 
         EXIT;
 }
@@ -1816,8 +1900,8 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
                                              0, 0, LUSTRE_OPC_ANY,
                                              NULL);
-                if (op_data == NULL)
-                        RETURN(-ENOMEM);
+                if (IS_ERR(op_data))
+                        RETURN(PTR_ERR(op_data));
 
                 op_data->op_valid = OBD_MD_FLFLAGS;
                 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
@@ -1836,18 +1920,13 @@ 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))
@@ -1859,37 +1938,37 @@ 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;
                 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
                                        OBD_MD_FLGROUP;
                 oinfo.oi_capa = ll_mdscapa_get(inode);
-                obdo_from_inode(oinfo.oi_oa, inode,
-                                &ll_i2info(inode)->lli_fid, 0);
+                obdo_set_parent_fid(oinfo.oi_oa, &ll_i2info(inode)->lli_fid);
                 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);
@@ -1904,10 +1983,10 @@ 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;
@@ -1993,18 +2072,20 @@ void ll_umount_begin(struct super_block *sb)
 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
 {
         struct ll_sb_info *sbi = ll_s2sbi(sb);
+        char *profilenm = get_profile_name(sb);
         int err;
         __u32 read_only;
 
         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);
                 if (err) {
-                        CERROR("Failed to change the read-only flag during "
-                               "remount: %d\n", err);
+                        LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
+                                      profilenm, read_only ?
+                                      "read-only" : "read-write", err);
                         return err;
                 }
 
@@ -2012,6 +2093,10 @@ int ll_remount_fs(struct super_block *sb, int *flags, char *data)
                         sb->s_flags |= MS_RDONLY;
                 else
                         sb->s_flags &= ~MS_RDONLY;
+
+                if (sbi->ll_flags & LL_SBI_VERBOSE)
+                        LCONSOLE_WARN("Remounted %s %s\n", profilenm,
+                                      read_only ?  "read-only" : "read-write");
         }
         return 0;
 }
@@ -2020,8 +2105,9 @@ 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;
 
@@ -2060,9 +2146,18 @@ 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(*inode), 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)
@@ -2093,7 +2188,7 @@ 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_MDC)
+        if (type == LL_STATFS_LMV)
                 exp = sbi->ll_md_exp;
         else if (type == LL_STATFS_LOV)
                 exp = sbi->ll_dt_exp;
@@ -2183,12 +2278,11 @@ 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. */
@@ -2228,3 +2322,29 @@ int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
 
         RETURN(0);
 }
+
+/**
+ * Get obd name by cmd, and copy out to user space
+ */
+int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
+{
+        struct ll_sb_info *sbi = ll_i2sbi(inode);
+        struct obd_device *obd;
+        ENTRY;
+
+        if (cmd == OBD_IOC_GETDTNAME)
+                obd = class_exp2obd(sbi->ll_dt_exp);
+        else if (cmd == OBD_IOC_GETMDNAME)
+                obd = class_exp2obd(sbi->ll_md_exp);
+        else
+                RETURN(-EINVAL);
+
+        if (!obd)
+                RETURN(-ENOENT);
+
+        if (cfs_copy_to_user((void *)arg, obd->obd_name,
+                             strlen(obd->obd_name) + 1))
+                RETURN(-EFAULT);
+
+        RETURN(0);
+}