Whamcloud - gitweb
LU-473 llite: improve error for 2.x cli + 1.8 srv
[fs/lustre-release.git] / lustre / llite / llite_lib.c
index 11b1806..a0b5027 100644 (file)
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  */
 /*
+ * Copyright (c) 2011 Whamcloud, Inc.
+ */
+/*
  * This file is part of Lustre, http://www.lustre.org/
  * Lustre is a trademark of Sun Microsystems, Inc.
  *
@@ -42,7 +45,6 @@
 
 #include <linux/module.h>
 #include <linux/types.h>
-#include <linux/random.h>
 #include <linux/version.h>
 #include <linux/mm.h>
 
@@ -62,8 +64,13 @@ cfs_mem_cache_t *ll_file_data_slab;
 CFS_LIST_HEAD(ll_super_blocks);
 cfs_spinlock_t ll_sb_lock = CFS_SPIN_LOCK_UNLOCKED;
 
+#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
 #define log2(n) cfs_ffz(~(n))
@@ -116,7 +123,7 @@ 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);
 
-#ifdef ENABLE_LLITE_CHECKSUM
+#ifdef ENABLE_CHECKSUM
         sbi->ll_flags |= LL_SBI_CHECKSUM;
 #endif
 
@@ -158,13 +165,14 @@ static struct dentry_operations ll_d_root_ops = {
         .d_revalidate = ll_revalidate_nd,
 };
 
-static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
+static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
+                                    struct vfsmount *mnt)
 {
         struct inode *root = 0;
         struct ll_sb_info *sbi = ll_s2sbi(sb);
         struct obd_device *obd;
         struct obd_capa *oc = NULL;
-        struct obd_statfs osfs;
+        struct obd_statfs *osfs = NULL;
         struct ptlrpc_request *request = NULL;
         struct obd_connect_data *data = NULL;
         struct obd_uuid *uuid;
@@ -184,6 +192,12 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
         if (data == NULL)
                 RETURN(-ENOMEM);
 
+        OBD_ALLOC_PTR(osfs);
+        if (osfs == NULL) {
+                OBD_FREE_PTR(data);
+                RETURN(-ENOMEM);
+        }
+
         if (proc_lustre_fs_root) {
                 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
                                                   dt, md);
@@ -193,12 +207,13 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
 
         /* indicate the features supported by this client */
         data->ocd_connect_flags = OBD_CONNECT_IBITS    | OBD_CONNECT_NODEVOH  |
-                                  OBD_CONNECT_JOIN     | OBD_CONNECT_ATTRFID  |
-                                  OBD_CONNECT_VERSION  | OBD_CONNECT_MDS_CAPA |
-                                  OBD_CONNECT_OSS_CAPA | 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_ATTRFID  |
+                                  OBD_CONNECT_VERSION  | OBD_CONNECT_BRW_SIZE |
+                                  OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
+                                  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;
 
         if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
                 data->ocd_connect_flags |= OBD_CONNECT_SOM;
@@ -222,6 +237,9 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
         /* force vfs to use lustre handler for flock() calls - bug 10743 */
         sb->s_flags |= MS_FLOCK_LOCK;
 #endif
+#ifdef MS_HAS_NEW_AOPS
+        sb->s_flags |= MS_HAS_NEW_AOPS;
+#endif
 
         if (sbi->ll_flags & LL_SBI_FLOCK)
                 sbi->ll_fop = &ll_file_operations_flock;
@@ -235,6 +253,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
         if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
                 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
 
+        data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
+
         err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
         if (err == -EBUSY) {
                 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
@@ -254,10 +274,35 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                 GOTO(out_md, err);
         }
 
-        err = obd_statfs(obd, &osfs, cfs_time_current_64() - CFS_HZ, 0);
+        err = obd_statfs(obd, osfs,
+                         cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 0);
         if (err)
                 GOTO(out_md_fid, err);
 
+        /* This needs to be after statfs to ensure connect has finished.
+         * Note that "data" does NOT contain the valid connect reply.
+         * If connecting to a 1.8 server there will be no LMV device, so
+         * we can access the MDC export directly and exp_connect_flags will
+         * be non-zero, but if accessing an upgraded 2.1 server it will
+         * have the correct flags filled in.
+         * XXX: fill in the LMV exp_connect_flags from MDC(s). */
+        valid = sbi->ll_md_exp->exp_connect_flags & CLIENT_CONNECT_MDT_REQD;
+        if (sbi->ll_md_exp->exp_connect_flags != 0 &&
+            valid != CLIENT_CONNECT_MDT_REQD) {
+                char *buf;
+
+                OBD_ALLOC_WAIT(buf, CFS_PAGE_SIZE);
+                obd_connect_flags2str(buf, CFS_PAGE_SIZE,
+                                      valid ^ CLIENT_CONNECT_MDT_REQD, ",");
+                LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
+                                   "feature(s) needed for correct operation "
+                                   "of this client (%s). Please upgrade "
+                                   "server or downgrade client.\n",
+                                   sbi->ll_md_exp->exp_obd->obd_name, buf);
+                OBD_FREE(buf, CFS_PAGE_SIZE);
+                GOTO(out_md, err = -EPROTO);
+        }
+
         size = sizeof(*data);
         err = obd_get_info(sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
                            KEY_CONN_DATA,  &size, data, NULL);
@@ -266,9 +311,9 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                 GOTO(out_md, err);
         }
 
-        LASSERT(osfs.os_bsize);
-        sb->s_blocksize = osfs.os_bsize;
-        sb->s_blocksize_bits = log2(osfs.os_bsize);
+        LASSERT(osfs->os_bsize);
+        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():
@@ -284,7 +329,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
 #else
         sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
 #endif
-        sbi->ll_namelen = osfs.os_namelen;
+        sbi->ll_namelen = osfs->os_namelen;
         sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
 
         if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
@@ -330,6 +375,14 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                 sbi->ll_flags |= LL_SBI_OSS_CAPA;
         }
 
+        if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
+                sbi->ll_flags |= LL_SBI_64BIT_HASH;
+
+        if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
+                sbi->ll_md_brw_size = data->ocd_brw_size;
+        else
+                sbi->ll_md_brw_size = CFS_PAGE_SIZE;
+
         obd = class_name2obd(dt);
         if (!obd) {
                 CERROR("DT %s: not setup or attached\n", dt);
@@ -342,7 +395,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                                   OBD_CONNECT_SRVLOCK   | OBD_CONNECT_TRUNCLOCK|
                                   OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
                                   OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
-                                  OBD_CONNECT_FULL20;
+                                  OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
+                                  OBD_CONNECT_MAXBYTES;
 
         if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
                 data->ocd_connect_flags |= OBD_CONNECT_SOM;
@@ -373,7 +427,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
 
         obd->obd_upcall.onu_owner = &sbi->ll_lco;
         obd->obd_upcall.onu_upcall = cl_ocd_update;
-        data->ocd_brw_size = PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT;
+
+        data->ocd_brw_size = PTLRPC_MAX_BRW_SIZE;
 
         err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data, NULL);
         if (err == -EBUSY) {
@@ -413,7 +468,9 @@ 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
         sb->s_export_op = &lustre_export_operations;
+#endif
 
         /* make root inode
          * XXX: move this to after cbd setup? */
@@ -424,7 +481,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                 valid |= OBD_MD_FLACL;
 
         OBD_ALLOC_PTR(op_data);
-        if (op_data == NULL) 
+        if (op_data == NULL)
                 GOTO(out_lock_cn_cb, err = -ENOMEM);
 
         op_data->op_fid1 = sbi->ll_root_fid;
@@ -450,7 +507,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
         }
 
         LASSERT(fid_is_sane(&sbi->ll_root_fid));
-        root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid), &lmd);
+        root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid, 0), &lmd);
         md_free_lustre_md(sbi->ll_md_exp, &lmd);
         ptlrpc_req_finished(request);
 
@@ -489,9 +546,6 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
         cl_sb_init(sb);
 
         sb->s_root = d_alloc_root(root);
-        if (data != NULL)
-                OBD_FREE(data, sizeof(*data));
-
         sb->s_root->d_op = &ll_d_root_ops;
 
         sbi->ll_sdev_orig = sb->s_dev;
@@ -504,6 +558,12 @@ 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);
+        if (osfs != NULL)
+                OBD_FREE_PTR(osfs);
 
         RETURN(err);
 out_root:
@@ -522,6 +582,8 @@ out_md:
 out:
         if (data != NULL)
                 OBD_FREE_PTR(data);
+        if (osfs != NULL)
+                OBD_FREE_PTR(osfs);
         lprocfs_unregister_mountpoint(sbi);
         return err;
 }
@@ -711,17 +773,25 @@ static int ll_options(char *options, int *flags)
                         *flags &= ~tmp;
                         goto next;
                 }
+#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
                          * always try to mount with ACL support, whether this
                          * is used depends on whether server supports it. */
+                        LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
+                                                  "mount option 'acl'.\n");
                         goto next;
                 }
                 tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
                 if (tmp) {
+                        LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
+                                                  "mount option 'noacl'.\n");
                         goto next;
                 }
+#else
+#warning "{no}acl options have been deprecated since 1.8, please remove them"
+#endif
                 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
                 if (tmp) {
                         *flags |= tmp;
@@ -763,6 +833,11 @@ static int ll_options(char *options, int *flags)
                         *flags |= tmp;
                         goto next;
                 }
+                tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
+                if (tmp) {
+                        *flags |= tmp;
+                        goto next;
+                }
 
                 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
                                    s1);
@@ -783,7 +858,7 @@ 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_sema_init(&lli->lli_trunc_sem, 1);
+        cfs_init_rwsem(&lli->lli_trunc_sem);
         lli->lli_flags = 0;
         lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
         cfs_spin_lock_init(&lli->lli_lock);
@@ -800,29 +875,48 @@ void ll_lli_init(struct ll_inode_info *lli)
         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_INIT_LIST_HEAD(&lli->lli_sa_dentry);
+        cfs_sema_init(&lli->lli_readdir_sem, 1);
+        fid_zero(&lli->lli_pfid);
+}
+
+static inline int ll_bdi_register(struct backing_dev_info *bdi)
+{
+#ifdef HAVE_BDI_REGISTER
+        static atomic_t ll_bdi_num = ATOMIC_INIT(0);
+
+        bdi->name = "lustre";
+        return bdi_register(bdi, NULL, "lustre-%d",
+                            atomic_inc_return(&ll_bdi_num));
+#else
+        return 0;
+#endif
 }
 
-int ll_fill_super(struct super_block *sb)
+int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
 {
-        struct lustre_profile *lprof;
+        struct lustre_profile *lprof = NULL;
         struct lustre_sb_info *lsi = s2lsi(sb);
         struct ll_sb_info *sbi;
         char  *dt = NULL, *md = NULL;
         char  *profilenm = get_profile_name(sb);
-        struct config_llog_instance cfg = {0, };
-        char   ll_instance[sizeof(sb) * 2 + 1];
+        struct config_llog_instance *cfg;
+        const int instlen = sizeof(cfg->cfg_instance) * 2 + 1;
         int    err;
         ENTRY;
 
         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 
+        OBD_ALLOC_PTR(cfg);
+        if (cfg == NULL)
+                RETURN(-ENOMEM);
+
         cfs_module_get();
 
         /* client additional sb info */
         lsi->lsi_llsbi = sbi = ll_init_sbi();
         if (!sbi) {
                 cfs_module_put(THIS_MODULE);
+                OBD_FREE_PTR(cfg);
                 RETURN(-ENOMEM);
         }
 
@@ -830,15 +924,27 @@ int ll_fill_super(struct super_block *sb)
         if (err)
                 GOTO(out_free, err);
 
+        err = ll_bdi_init(&lsi->lsi_bdi);
+        if (err)
+                GOTO(out_free, err);
+        lsi->lsi_flags |= LSI_BDI_INITIALIZED;
+        lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
+        err = ll_bdi_register(&lsi->lsi_bdi);
+        if (err)
+                GOTO(out_free, err);
+
+#ifdef HAVE_SB_BDI
+        sb->s_bdi = &lsi->lsi_bdi;
+#endif
+
         /* Generate a string unique to this super, in case some joker tries
            to mount the same fs at two mount points.
            Use the address of the super itself.*/
-        sprintf(ll_instance, "%p", sb);
-        cfg.cfg_instance = ll_instance;
-        cfg.cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
+        cfg->cfg_instance = sb;
+        cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
 
         /* set up client obds */
-        err = lustre_process_log(sb, profilenm, &cfg);
+        err = lustre_process_log(sb, profilenm, cfg);
         if (err < 0) {
                 CERROR("Unable to process log: %d\n", err);
                 GOTO(out_free, err);
@@ -855,31 +961,30 @@ int ll_fill_super(struct super_block *sb)
         CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
                lprof->lp_md, lprof->lp_dt);
 
-        OBD_ALLOC(dt, strlen(lprof->lp_dt) +
-                  strlen(ll_instance) + 2);
+        OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen);
         if (!dt)
                 GOTO(out_free, err = -ENOMEM);
-        sprintf(dt, "%s-%s", lprof->lp_dt, ll_instance);
+        sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
 
-        OBD_ALLOC(md, strlen(lprof->lp_md) +
-                  strlen(ll_instance) + 2);
+        OBD_ALLOC(md, strlen(lprof->lp_md) + instlen);
         if (!md)
                 GOTO(out_free, err = -ENOMEM);
-        sprintf(md, "%s-%s", lprof->lp_md, ll_instance);
+        sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
 
         /* connections, registrations, sb setup */
-        err = client_common_fill_super(sb, md, dt);
+        err = client_common_fill_super(sb, md, dt, mnt);
 
 out_free:
         if (md)
-                OBD_FREE(md, strlen(md) + 1);
+                OBD_FREE(md, strlen(lprof->lp_md) + instlen);
         if (dt)
-                OBD_FREE(dt, strlen(dt) + 1);
+                OBD_FREE(dt, strlen(lprof->lp_dt) + instlen);
         if (err)
                 ll_put_super(sb);
         else
                 LCONSOLE_WARN("Client %s has started\n", profilenm);
 
+        OBD_FREE_PTR(cfg);
         RETURN(err);
 } /* ll_fill_super */
 
@@ -889,7 +994,6 @@ void lu_context_keys_dump(void);
 void ll_put_super(struct super_block *sb)
 {
         struct config_llog_instance cfg;
-        char   ll_instance[sizeof(sb) * 2 + 1];
         struct obd_device *obd;
         struct lustre_sb_info *lsi = s2lsi(sb);
         struct ll_sb_info *sbi = ll_s2sbi(sb);
@@ -901,9 +1005,8 @@ void ll_put_super(struct super_block *sb)
 
         ll_print_capa_stat(sbi);
 
-        sprintf(ll_instance, "%p", sb);
-        cfg.cfg_instance = ll_instance;
-        lustre_end_log(sb, NULL, &cfg);
+        cfg.cfg_instance = sb;
+        lustre_end_log(sb, profilenm, &cfg);
 
         if (sbi->ll_md_exp) {
                 obd = class_exp2obd(sbi->ll_md_exp);
@@ -934,6 +1037,11 @@ void ll_put_super(struct super_block *sb)
         if (profilenm)
                 class_del_profile(profilenm);
 
+        if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
+                ll_bdi_destroy(&lsi->lsi_bdi);
+                lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
+        }
+
         ll_free_sbi(sb);
         lsi->lsi_llsbi = NULL;
 
@@ -941,7 +1049,7 @@ void ll_put_super(struct super_block *sb)
 
         cl_env_cache_purge(~0);
 
-        LCONSOLE_WARN("client %s umount complete\n", ll_instance);
+        LCONSOLE_WARN("client %p umount complete\n", cfg.cfg_instance);
 
         cfs_module_put(THIS_MODULE);
 
@@ -959,11 +1067,10 @@ struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
                         inode = igrab(lock->l_ast_data);
                 } else {
                         inode = lock->l_ast_data;
-                        ldlm_lock_debug(NULL, inode->i_state & I_FREEING ?
-                                                D_INFO : D_WARNING,
-                                        lock, __FILE__, __func__, __LINE__,
-                                        "l_ast_data %p is bogus: magic %08x",
-                                        lock->l_ast_data, lli->lli_inode_magic);
+                        LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ?  D_INFO :
+                                         D_WARNING, lock, "l_ast_data %p is "
+                                         "bogus: magic %08x", lock->l_ast_data,
+                                         lli->lli_inode_magic);
                         inode = NULL;
                 }
         }
@@ -1238,7 +1345,7 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
         UNLOCK_INODE_MUTEX(inode);
         if (ia_valid & ATTR_SIZE)
                 UP_WRITE_I_ALLOC_SEM(inode);
-        cfs_down(&lli->lli_trunc_sem);
+        cfs_down_write(&lli->lli_trunc_sem);
         LOCK_INODE_MUTEX(inode);
         if (ia_valid & ATTR_SIZE)
                 DOWN_WRITE_I_ALLOC_SEM(inode);
@@ -1262,13 +1369,15 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
 
         if (ia_valid & ATTR_SIZE)
                 attr->ia_valid |= ATTR_SIZE;
-        if ((ia_valid & ATTR_SIZE) | 
-            ((ia_valid | ATTR_ATIME | ATTR_ATIME_SET) &&
-             LTIME_S(attr->ia_atime) < LTIME_S(attr->ia_ctime)) ||
-            ((ia_valid | ATTR_MTIME | ATTR_MTIME_SET) &&
-             LTIME_S(attr->ia_mtime) < LTIME_S(attr->ia_ctime)))
-                /* perform truncate and setting mtime/atime to past under PW
-                 * 0:EOF extent lock (new_size:EOF for truncate) */
+        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 */
                 rc = ll_setattr_ost(inode, attr);
         EXIT;
 out:
@@ -1277,22 +1386,31 @@ out:
                         rc1 = ll_setattr_done_writing(inode, op_data, mod);
                 ll_finish_md_op_data(op_data);
         }
-        cfs_up(&lli->lli_trunc_sem);
+        cfs_up_write(&lli->lli_trunc_sem);
         return rc ? rc : rc1;
 }
 
 int ll_setattr(struct dentry *de, struct iattr *attr)
 {
+        int mode = de->d_inode->i_mode;
+
         if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
-            (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
+                              (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
                 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
 
-        if ((de->d_inode->i_mode & S_ISUID) &&
+        if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
+                               (ATTR_SIZE|ATTR_MODE)) &&
+            (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
+             (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
+              !(attr->ia_mode & S_ISGID))))
+                attr->ia_valid |= ATTR_FORCE;
+
+        if ((mode & S_ISUID) &&
             !(attr->ia_mode & S_ISUID) &&
             !(attr->ia_valid & ATTR_KILL_SUID))
                 attr->ia_valid |= ATTR_KILL_SUID;
 
-        if (((de->d_inode->i_mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
+        if (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
             !(attr->ia_mode & S_ISGID) &&
             !(attr->ia_valid & ATTR_KILL_SGID))
                 attr->ia_valid |= ATTR_KILL_SGID;
@@ -1364,10 +1482,10 @@ int ll_statfs(struct dentry *de, struct kstatfs *sfs)
         CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
         ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
 
-        /* For now we will always get up-to-date statfs values, but in the
-         * future we may allow some amount of caching on the client (e.g.
-         * from QOS or lprocfs updates). */
-        rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - 1, 0);
+        /* Some amount of caching on the client is allowed */
+        rc = ll_statfs_internal(sb, &osfs,
+                                cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
+                                0);
         if (rc)
                 return rc;
 
@@ -1450,7 +1568,9 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
                          * 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)
@@ -1487,7 +1607,7 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
                 cfs_spin_unlock(&lli->lli_lock);
         }
 #endif
-        inode->i_ino = cl_fid_build_ino(&body->fid1);
+        inode->i_ino = cl_fid_build_ino(&body->fid1, 0);
         inode->i_generation = cl_fid_build_gen(&body->fid1);
 
         if (body->valid & OBD_MD_FLATIME) {
@@ -1579,6 +1699,9 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
                         /* Use old size assignment to avoid
                          * deadlock bz14138 & bz14326 */
                         inode->i_size = body->size;
+
+                        CDEBUG(D_VFSTRACE, "inode=%lu, updating i_size %llu\n",
+                               inode->i_ino, (unsigned long long)body->size);
                 }
 
                 if (body->valid & OBD_MD_FLBLOCKS)
@@ -1595,15 +1718,6 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
         }
 }
 
-static struct backing_dev_info ll_backing_dev_info = {
-        .ra_pages       = 0,    /* No readahead */
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12))
-        .capabilities   = 0,    /* Does contribute to dirty memory */
-#else
-        .memory_backed  = 0,    /* Does contribute to dirty memory */
-#endif
-};
-
 void ll_read_inode2(struct inode *inode, void *opaque)
 {
         struct lustre_md *md = opaque;
@@ -1629,16 +1743,20 @@ void ll_read_inode2(struct inode *inode, void *opaque)
 
         /* OIDEBUG(inode); */
 
+        /* initializing backing dev info. */
+        inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
+
+
         if (S_ISREG(inode->i_mode)) {
                 struct ll_sb_info *sbi = ll_i2sbi(inode);
                 inode->i_op = &ll_file_inode_operations;
                 inode->i_fop = sbi->ll_fop;
-                inode->i_mapping->a_ops = &ll_aops;
+                inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
                 EXIT;
         } 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 = &ll_dir_aops;
+                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;
@@ -1649,9 +1767,6 @@ void ll_read_inode2(struct inode *inode, void *opaque)
                 init_special_inode(inode, inode->i_mode,
                                    kdev_t_to_nr(inode->i_rdev));
 
-                /* initializing backing dev info. */
-                inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
-
                 EXIT;
         }
 }
@@ -1663,10 +1778,23 @@ void ll_delete_inode(struct inode *inode)
         ENTRY;
 
         rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
-        if (rc) {
+        if (rc)
                 CERROR("fid_delete() failed, rc %d\n", rc);
-        }
+
         truncate_inode_pages(&inode->i_data, 0);
+
+        /* Workaround for LU-118 */
+        if (inode->i_data.nrpages) {
+                TREE_READ_LOCK_IRQ(&inode->i_data);
+                TREE_READ_UNLOCK_IRQ(&inode->i_data);
+                LASSERTF(inode->i_data.nrpages == 0,
+                         "inode=%lu/%u(%p) nrpages=%lu, see "
+                         "http://jira.whamcloud.com/browse/LU-118\n",
+                         inode->i_ino, inode->i_generation, inode,
+                         inode->i_data.nrpages);
+        }
+        /* Workaround end */
+
         clear_inode(inode);
 
         EXIT;
@@ -1742,14 +1870,13 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                 }
 
                 oinfo.oi_oa->o_id = lsm->lsm_object_id;
-                oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
+                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,
-                                OBD_MD_FLFID | OBD_MD_FLGENER);
+                                &ll_i2info(inode)->lli_fid, 0);
                 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
                 capa_put(oinfo.oi_capa);
                 OBDO_FREE(oinfo.oi_oa);
@@ -1918,7 +2045,7 @@ int ll_prep_inode(struct inode **inode,
                  */
                 LASSERT(fid_is_sane(&md.body->fid1));
 
-                *inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1), &md);
+                *inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1, 0), &md);
                 if (*inode == NULL || IS_ERR(*inode)) {
                         if (md.lsm)
                                 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
@@ -2054,6 +2181,21 @@ struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
         op_data->op_mds = 0;
         op_data->op_data = data;
 
+        /* If the file is being opened after mknod() (normally due to NFS)
+         * 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);
+
+                cfs_spin_lock(&lli->lli_lock);
+                if (likely(lli->lli_smd == NULL &&
+                           !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. */
+        }
+
         return op_data;
 }
 
@@ -2083,9 +2225,6 @@ int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
         if (sbi->ll_flags & LL_SBI_USER_XATTR)
                 seq_puts(seq, ",user_xattr");
 
-        if (sbi->ll_flags & LL_SBI_ACL)
-                seq_puts(seq, ",acl");
-
         if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
                 seq_puts(seq, ",lazystatfs");