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LU-7669 lmv: assume a real connection in lmv_connect()
[fs/lustre-release.git] / lustre / llite / llite_lib.c
index 42a5f6c..be4fc6f 100644 (file)
@@ -27,7 +27,7 @@
  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2014, Intel Corporation.
+ * Copyright (c) 2011, 2015, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -42,6 +42,7 @@
 
 #include <linux/module.h>
 #include <linux/statfs.h>
+#include <linux/time.h>
 #include <linux/types.h>
 #include <linux/version.h>
 #include <linux/mm.h>
@@ -63,9 +64,6 @@
 
 struct kmem_cache *ll_file_data_slab;
 
-static struct list_head ll_super_blocks = LIST_HEAD_INIT(ll_super_blocks);
-static DEFINE_SPINLOCK(ll_sb_lock);
-
 #ifndef log2
 #define log2(n) ffz(~(n))
 #endif
@@ -106,17 +104,11 @@ static struct ll_sb_info *ll_init_sbi(void)
        sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
        sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
                                           SBI_DEFAULT_READAHEAD_WHOLE_MAX;
-       INIT_LIST_HEAD(&sbi->ll_conn_chain);
-       INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
 
         ll_generate_random_uuid(uuid);
         class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
         CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
 
-       spin_lock(&ll_sb_lock);
-       list_add_tail(&sbi->ll_list, &ll_super_blocks);
-       spin_unlock(&ll_sb_lock);
-
         sbi->ll_flags |= LL_SBI_VERBOSE;
 #ifdef ENABLE_CHECKSUM
         sbi->ll_flags |= LL_SBI_CHECKSUM;
@@ -125,6 +117,7 @@ static struct ll_sb_info *ll_init_sbi(void)
 #ifdef HAVE_LRU_RESIZE_SUPPORT
         sbi->ll_flags |= LL_SBI_LRU_RESIZE;
 #endif
+       sbi->ll_flags |= LL_SBI_LAZYSTATFS;
 
         for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
                spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
@@ -140,6 +133,7 @@ static struct ll_sb_info *ll_init_sbi(void)
        atomic_set(&sbi->ll_sa_running, 0);
        atomic_set(&sbi->ll_agl_total, 0);
        sbi->ll_flags |= LL_SBI_AGL_ENABLED;
+       sbi->ll_flags |= LL_SBI_FAST_READ;
 
        /* root squash */
        sbi->ll_squash.rsi_uid = 0;
@@ -156,9 +150,6 @@ static void ll_free_sbi(struct super_block *sb)
        ENTRY;
 
        if (sbi != NULL) {
-               spin_lock(&ll_sb_lock);
-               list_del(&sbi->ll_list);
-               spin_unlock(&ll_sb_lock);
                if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
                        cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
                if (sbi->ll_cache != NULL) {
@@ -176,7 +167,6 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
        struct inode *root = NULL;
         struct ll_sb_info *sbi = ll_s2sbi(sb);
         struct obd_device *obd;
-        struct obd_capa *oc = NULL;
         struct obd_statfs *osfs = NULL;
         struct ptlrpc_request *request = NULL;
         struct obd_connect_data *data = NULL;
@@ -210,16 +200,21 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                                   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|
+                                 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
+                                 OBD_CONNECT_64BITHASH |
                                  OBD_CONNECT_EINPROGRESS |
                                  OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
-                                 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS |
+                                 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
                                  OBD_CONNECT_MAX_EASIZE |
                                  OBD_CONNECT_FLOCK_DEAD |
                                  OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
                                  OBD_CONNECT_OPEN_BY_FID |
-                                 OBD_CONNECT_DIR_STRIPE;
+                                 OBD_CONNECT_DIR_STRIPE |
+                                 OBD_CONNECT_BULK_MBITS |
+                                 OBD_CONNECT_SUBTREE |
+                                 OBD_CONNECT_FLAGS2;
+
+       data->ocd_connect_flags2 = 0;
 
 #ifdef HAVE_LRU_RESIZE_SUPPORT
         if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
@@ -242,14 +237,6 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
         if (sbi->ll_flags & LL_SBI_USER_XATTR)
                 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
 
-#ifdef HAVE_MS_FLOCK_LOCK
-        /* 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;
         else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
@@ -257,10 +244,9 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
         else
                 sbi->ll_fop = &ll_file_operations_noflock;
 
-        /* real client */
-        data->ocd_connect_flags |= OBD_CONNECT_REAL;
-        if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
-                data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
+       /* always ping even if server suppress_pings */
+       if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
+               data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
 
        data->ocd_brw_size = MD_MAX_BRW_SIZE;
 
@@ -309,7 +295,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
 
                OBD_ALLOC_WAIT(buf, PAGE_CACHE_SIZE);
                obd_connect_flags2str(buf, PAGE_CACHE_SIZE,
-                                     valid ^ CLIENT_CONNECT_MDT_REQD, ",");
+                                     valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
                LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
                                   "feature(s) needed for correct operation "
                                   "of this client (%s). Please upgrade "
@@ -334,7 +320,6 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
         sb->s_magic = LL_SUPER_MAGIC;
         sb->s_maxbytes = MAX_LFS_FILESIZE;
         sbi->ll_namelen = osfs->os_namelen;
-        sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
 
         if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
             !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
@@ -356,29 +341,6 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                 sbi->ll_flags &= ~LL_SBI_ACL;
         }
 
-        if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
-                if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
-                        sbi->ll_flags |= LL_SBI_RMT_CLIENT;
-                        LCONSOLE_INFO("client is set as remote by default.\n");
-                }
-        } else {
-                if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
-                        sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
-                        LCONSOLE_INFO("client claims to be remote, but server "
-                                      "rejected, forced to be local.\n");
-                }
-        }
-
-        if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
-                LCONSOLE_INFO("client enabled MDS capability!\n");
-                sbi->ll_flags |= LL_SBI_MDS_CAPA;
-        }
-
-        if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
-                LCONSOLE_INFO("client enabled OSS capability!\n");
-                sbi->ll_flags |= LL_SBI_OSS_CAPA;
-        }
-
         if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
                 sbi->ll_flags |= LL_SBI_64BIT_HASH;
 
@@ -406,44 +368,54 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                GOTO(out_md_fid, err = -ENODEV);
        }
 
-        data->ocd_connect_flags = OBD_CONNECT_GRANT     | OBD_CONNECT_VERSION  |
+       /* pass client page size via ocd_grant_blkbits, the server should report
+        * back its backend blocksize for grant calculation purpose */
+       data->ocd_grant_blkbits = PAGE_SHIFT;
+
+       data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
                                  OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
-                                  OBD_CONNECT_CANCELSET | OBD_CONNECT_FID      |
-                                  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_64BITHASH |
-                                  OBD_CONNECT_MAXBYTES |
+                                 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
+                                 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
+                                 OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
+                                 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
+                                 OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
                                  OBD_CONNECT_EINPROGRESS |
                                  OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
                                  OBD_CONNECT_LAYOUTLOCK |
-                                 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK;
+                                 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
+                                 OBD_CONNECT_BULK_MBITS;
+
+       data->ocd_connect_flags2 = 0;
+
+       if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
+               data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
 
-        if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
-                /* OBD_CONNECT_CKSUM should always be set, even if checksums are
-                 * disabled by default, because it can still be enabled on the
-                 * fly via /proc. As a consequence, we still need to come to an
-                 * agreement on the supported algorithms at connect time */
-                data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
+       if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
+               /* OBD_CONNECT_CKSUM should always be set, even if checksums are
+                * disabled by default, because it can still be enabled on the
+                * fly via /proc. As a consequence, we still need to come to an
+                * 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_client();
-        }
+       }
 
 #ifdef HAVE_LRU_RESIZE_SUPPORT
-        data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
+       data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
 #endif
-        if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
-                data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
+       /* always ping even if server suppress_pings */
+       if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
+               data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
 
-        CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
-               "ocd_grant: %d\n", data->ocd_connect_flags,
-               data->ocd_version, data->ocd_grant);
+       CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
+              "ocd_grant: %d\n", data->ocd_connect_flags,
+              data->ocd_version, data->ocd_grant);
 
-        obd->obd_upcall.onu_owner = &sbi->ll_lco;
-        obd->obd_upcall.onu_upcall = cl_ocd_update;
+       obd->obd_upcall.onu_owner = &sbi->ll_lco;
+       obd->obd_upcall.onu_upcall = cl_ocd_update;
 
        data->ocd_brw_size = DT_MAX_BRW_SIZE;
 
@@ -478,7 +450,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
        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);
+       err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
+                          &sbi->ll_root_fid);
        if (err) {
                CERROR("cannot mds_connect: rc = %d\n", err);
                GOTO(out_lock_cn_cb, err);
@@ -493,16 +466,13 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
 
        sb->s_op = &lustre_super_operations;
 #if THREAD_SIZE >= 8192 /*b=17630*/
-        sb->s_export_op = &lustre_export_operations;
+       sb->s_export_op = &lustre_export_operations;
 #endif
 
        /* make root inode
         * XXX: move this to after cbd setup? */
-       valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA |
-               OBD_MD_FLMODEASIZE;
-       if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
-               valid |= OBD_MD_FLRMTPERM;
-       else if (sbi->ll_flags & LL_SBI_ACL)
+       valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
+       if (sbi->ll_flags & LL_SBI_ACL)
                valid |= OBD_MD_FLACL;
 
        OBD_ALLOC_PTR(op_data);
@@ -511,12 +481,10 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
 
        op_data->op_fid1 = sbi->ll_root_fid;
        op_data->op_mode = 0;
-       op_data->op_capa1 = oc;
        op_data->op_valid = valid;
 
        err = md_getattr(sbi->ll_md_exp, op_data, &request);
-       if (oc)
-               capa_put(oc);
+
        OBD_FREE_PTR(op_data);
        if (err) {
                CERROR("%s: md_getattr failed for root: rc = %d\n",
@@ -532,44 +500,45 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                GOTO(out_lock_cn_cb, err);
        }
 
-        LASSERT(fid_is_sane(&sbi->ll_root_fid));
+       LASSERT(fid_is_sane(&sbi->ll_root_fid));
        root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
                                            sbi->ll_flags & LL_SBI_32BIT_API),
                       &lmd);
-        md_free_lustre_md(sbi->ll_md_exp, &lmd);
-        ptlrpc_req_finished(request);
+       md_free_lustre_md(sbi->ll_md_exp, &lmd);
+       ptlrpc_req_finished(request);
 
        if (IS_ERR(root)) {
-               if (lmd.lsm)
-                       obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
-#ifdef CONFIG_FS_POSIX_ACL
-                if (lmd.posix_acl) {
-                        posix_acl_release(lmd.posix_acl);
-                        lmd.posix_acl = NULL;
-                }
-#endif
-                err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
-                root = NULL;
-                CERROR("lustre_lite: bad iget4 for root\n");
-                GOTO(out_root, err);
-        }
-
 #ifdef CONFIG_FS_POSIX_ACL
-        if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
-                rct_init(&sbi->ll_rct);
-                et_init(&sbi->ll_et);
-        }
+               if (lmd.posix_acl) {
+                       posix_acl_release(lmd.posix_acl);
+                       lmd.posix_acl = NULL;
+               }
 #endif
+               err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
+               root = NULL;
+               CERROR("lustre_lite: bad iget4 for root\n");
+               GOTO(out_root, err);
+       }
 
-        checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
-        err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
-                                 KEY_CHECKSUM, sizeof(checksum), &checksum,
-                                 NULL);
-        cl_sb_init(sb);
+       checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
+       err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
+                                KEY_CHECKSUM, sizeof(checksum), &checksum,
+                                NULL);
+       if (err) {
+               CERROR("%s: Set checksum failed: rc = %d\n",
+                      sbi->ll_dt_exp->exp_obd->obd_name, err);
+               GOTO(out_root, err);
+       }
+       cl_sb_init(sb);
 
        err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
                                 KEY_CACHE_SET, sizeof(*sbi->ll_cache),
                                 sbi->ll_cache, NULL);
+       if (err) {
+               CERROR("%s: Set cache_set failed: rc = %d\n",
+                      sbi->ll_dt_exp->exp_obd->obd_name, err);
+               GOTO(out_root, err);
+       }
 
        sb->s_root = d_make_root(root);
        if (sb->s_root == NULL) {
@@ -581,21 +550,21 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
        sb->s_root->d_op = &ll_d_ops;
 #endif
 
-        sbi->ll_sdev_orig = sb->s_dev;
+       sbi->ll_sdev_orig = sb->s_dev;
 
-        /* We set sb->s_dev equal on all lustre clients in order to support
-         * NFS export clustering.  NFSD requires that the FSID be the same
-         * on all clients. */
-        /* s_dev is also used in lt_compare() to compare two fs, but that is
-         * only a node-local comparison. */
-        uuid = obd_get_uuid(sbi->ll_md_exp);
+       /* We set sb->s_dev equal on all lustre clients in order to support
+        * NFS export clustering.  NFSD requires that the FSID be the same
+        * on all clients. */
+       /* s_dev is also used in lt_compare() to compare two fs, but that is
+        * only a node-local comparison. */
+       uuid = obd_get_uuid(sbi->ll_md_exp);
        if (uuid != NULL)
                sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
 
-        if (data != NULL)
-                OBD_FREE_PTR(data);
-        if (osfs != NULL)
-                OBD_FREE_PTR(osfs);
+       if (data != NULL)
+               OBD_FREE_PTR(data);
+       if (osfs != NULL)
+               OBD_FREE_PTR(osfs);
        if (proc_lustre_fs_root != NULL) {
                err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
                                                  dt, md);
@@ -606,33 +575,41 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                }
        }
 
-        RETURN(err);
+       RETURN(err);
 out_root:
-        if (root)
-                iput(root);
+       if (root)
+               iput(root);
 out_lock_cn_cb:
        obd_fid_fini(sbi->ll_dt_exp->exp_obd);
 out_dt:
-        obd_disconnect(sbi->ll_dt_exp);
-        sbi->ll_dt_exp = NULL;
+       obd_disconnect(sbi->ll_dt_exp);
+       sbi->ll_dt_exp = NULL;
 out_md_fid:
        obd_fid_fini(sbi->ll_md_exp->exp_obd);
 out_md:
-        obd_disconnect(sbi->ll_md_exp);
-        sbi->ll_md_exp = NULL;
+       obd_disconnect(sbi->ll_md_exp);
+       sbi->ll_md_exp = NULL;
 out:
-        if (data != NULL)
-                OBD_FREE_PTR(data);
-        if (osfs != NULL)
-                OBD_FREE_PTR(osfs);
-        return err;
+       if (data != NULL)
+               OBD_FREE_PTR(data);
+       if (osfs != NULL)
+               OBD_FREE_PTR(osfs);
+       return err;
 }
 
 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
 {
        int size, rc;
 
-       *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
+       size = sizeof(*lmmsize);
+       rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
+                         KEY_MAX_EASIZE, &size, lmmsize);
+       if (rc != 0) {
+               CERROR("%s: cannot get max LOV EA size: rc = %d\n",
+                      sbi->ll_dt_exp->exp_obd->obd_name, rc);
+               RETURN(rc);
+       }
+
        size = sizeof(int);
        rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
                          KEY_MAX_EASIZE, &size, lmmsize);
@@ -742,17 +719,8 @@ static void client_common_put_super(struct super_block *sb)
         struct ll_sb_info *sbi = ll_s2sbi(sb);
         ENTRY;
 
-#ifdef CONFIG_FS_POSIX_ACL
-        if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
-                et_fini(&sbi->ll_et);
-                rct_fini(&sbi->ll_rct);
-        }
-#endif
-
         cl_sb_fini(sb);
 
-       list_del(&sbi->ll_conn_chain);
-
        obd_fid_fini(sbi->ll_dt_exp->exp_obd);
         obd_disconnect(sbi->ll_dt_exp);
         sbi->ll_dt_exp = NULL;
@@ -845,11 +813,18 @@ static int ll_options(char *options, int *flags)
                         *flags &= ~tmp;
                         goto next;
                 }
-               tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
-               if (tmp) {
-                       *flags |= tmp;
+               tmp = ll_set_opt("context", s1, 1);
+               if (tmp)
+                       goto next;
+               tmp = ll_set_opt("fscontext", s1, 1);
+               if (tmp)
+                       goto next;
+               tmp = ll_set_opt("defcontext", s1, 1);
+               if (tmp)
+                       goto next;
+               tmp = ll_set_opt("rootcontext", s1, 1);
+               if (tmp)
                        goto next;
-               }
                tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
                if (tmp) {
                        *flags |= tmp;
@@ -906,6 +881,11 @@ static int ll_options(char *options, int *flags)
                         *flags &= ~tmp;
                         goto next;
                 }
+               tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
+               if (tmp) {
+                       *flags |= tmp;
+                       goto next;
+               }
                 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
                                    s1);
                 RETURN(-EINVAL);
@@ -926,14 +906,8 @@ void ll_lli_init(struct ll_inode_info *lli)
        lli->lli_flags = 0;
        spin_lock_init(&lli->lli_lock);
        lli->lli_posix_acl = NULL;
-       lli->lli_remote_perms = NULL;
-       mutex_init(&lli->lli_rmtperm_mutex);
        /* Do not set lli_fid, it has been initialized already. */
        fid_zero(&lli->lli_pfid);
-       INIT_LIST_HEAD(&lli->lli_oss_capas);
-       atomic_set(&lli->lli_open_count, 0);
-       lli->lli_mds_capa = NULL;
-       lli->lli_rmtperm_time = 0;
        lli->lli_mds_read_och = NULL;
         lli->lli_mds_write_och = NULL;
         lli->lli_mds_exec_och = NULL;
@@ -1018,7 +992,11 @@ int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
        if (err)
                GOTO(out_free, err);
        lsi->lsi_flags |= LSI_BDI_INITIALIZED;
+#ifdef HAVE_BDI_CAP_MAP_COPY
        lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
+#else
+       lsi->lsi_bdi.capabilities = 0;
+#endif
        err = ll_bdi_register(&lsi->lsi_bdi);
        if (err)
                GOTO(out_free, err);
@@ -1069,17 +1047,19 @@ int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
        sbi->ll_client_common_fill_super_succeeded = 1;
 
 out_free:
-        if (md)
-                OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
-        if (dt)
-                OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
-        if (err)
-                ll_put_super(sb);
-        else if (sbi->ll_flags & LL_SBI_VERBOSE)
-                LCONSOLE_WARN("Mounted %s\n", profilenm);
+       if (md)
+               OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
+       if (dt)
+               OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
+       if (lprof != NULL)
+               class_put_profile(lprof);
+       if (err)
+               ll_put_super(sb);
+       else if (sbi->ll_flags & LL_SBI_VERBOSE)
+               LCONSOLE_WARN("Mounted %s\n", profilenm);
 
-        OBD_FREE_PTR(cfg);
-        RETURN(err);
+       OBD_FREE_PTR(cfg);
+       RETURN(err);
 } /* ll_fill_super */
 
 void ll_put_super(struct super_block *sb)
@@ -1095,8 +1075,6 @@ void ll_put_super(struct super_block *sb)
 
         CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
 
-        ll_print_capa_stat(sbi);
-
         cfg.cfg_instance = sb;
         lustre_end_log(sb, profilenm, &cfg);
 
@@ -1190,7 +1168,7 @@ struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
        return inode;
 }
 
-static void ll_dir_clear_lsm_md(struct inode *inode)
+void ll_dir_clear_lsm_md(struct inode *inode)
 {
        struct ll_inode_info *lli = ll_i2info(inode);
 
@@ -1234,9 +1212,11 @@ static struct inode *ll_iget_anon_dir(struct super_block *sb,
                LTIME_S(inode->i_ctime) = 0;
                inode->i_rdev = 0;
 
+#ifdef HAVE_BACKING_DEV_INFO
                /* initializing backing dev info. */
                inode->i_mapping->backing_dev_info =
                                                &s2lsi(inode->i_sb)->lsi_bdi;
+#endif
                inode->i_op = &ll_dir_inode_operations;
                inode->i_fop = &ll_dir_operations;
                lli->lli_fid = *fid;
@@ -1336,15 +1316,42 @@ static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
 
        /* set the directory layout */
        if (lli->lli_lsm_md == NULL) {
+               struct cl_attr  *attr;
 
                rc = ll_init_lsm_md(inode, md);
                if (rc != 0)
                        RETURN(rc);
 
-               lli->lli_lsm_md = lsm;
-               /* set lsm_md to NULL, so the following free lustre_md
+               /* set md->lmv to NULL, so the following free lustre_md
                 * will not free this lsm */
                md->lmv = NULL;
+               lli->lli_lsm_md = lsm;
+
+               OBD_ALLOC_PTR(attr);
+               if (attr == NULL)
+                       RETURN(-ENOMEM);
+
+               /* validate the lsm */
+               rc = md_merge_attr(ll_i2mdexp(inode), lsm, attr,
+                                  ll_md_blocking_ast);
+               if (rc != 0) {
+                       OBD_FREE_PTR(attr);
+                       RETURN(rc);
+               }
+
+               if (md->body->mbo_valid & OBD_MD_FLNLINK)
+                       md->body->mbo_nlink = attr->cat_nlink;
+               if (md->body->mbo_valid & OBD_MD_FLSIZE)
+                       md->body->mbo_size = attr->cat_size;
+               if (md->body->mbo_valid & OBD_MD_FLATIME)
+                       md->body->mbo_atime = attr->cat_atime;
+               if (md->body->mbo_valid & OBD_MD_FLCTIME)
+                       md->body->mbo_ctime = attr->cat_ctime;
+               if (md->body->mbo_valid & OBD_MD_FLMTIME)
+                       md->body->mbo_mtime = attr->cat_mtime;
+
+               OBD_FREE_PTR(attr);
+
                CDEBUG(D_INODE, "Set lsm %p magic %x to "DFID"\n", lsm,
                       lsm->lsm_md_magic, PFID(ll_inode2fid(inode)));
                RETURN(0);
@@ -1426,24 +1433,15 @@ void ll_clear_inode(struct inode *inode)
 
        ll_xattr_cache_destroy(inode);
 
-       if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
-               LASSERT(lli->lli_posix_acl == NULL);
-               if (lli->lli_remote_perms) {
-                       free_rmtperm_hash(lli->lli_remote_perms);
-                       lli->lli_remote_perms = NULL;
-               }
-       }
 #ifdef CONFIG_FS_POSIX_ACL
-       else if (lli->lli_posix_acl) {
+       if (lli->lli_posix_acl) {
                LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
-               LASSERT(lli->lli_remote_perms == NULL);
                posix_acl_release(lli->lli_posix_acl);
                lli->lli_posix_acl = NULL;
        }
 #endif
        lli->lli_inode_magic = LLI_INODE_DEAD;
 
-       ll_clear_inode_capas(inode);
        if (S_ISDIR(inode->i_mode))
                ll_dir_clear_lsm_md(inode);
        else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
@@ -1503,7 +1501,11 @@ static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
        /* inode size will be in ll_setattr_ost, can't do it now since dirty
         * cache is not cleared yet. */
        op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
+       if (S_ISREG(inode->i_mode))
+               inode_lock(inode);
        rc = simple_setattr(dentry, &op_data->op_attr);
+       if (S_ISREG(inode->i_mode))
+               inode_unlock(inode);
        op_data->op_attr.ia_valid = ia_valid;
 
        rc = ll_update_inode(inode, &md);
@@ -1512,26 +1514,6 @@ static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
        RETURN(rc);
 }
 
-static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
-{
-        struct obd_capa *capa;
-        int rc;
-
-        if (attr->ia_valid & ATTR_SIZE)
-                capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
-        else
-                capa = ll_mdscapa_get(inode);
-
-       rc = cl_setattr_ost(ll_i2info(inode)->lli_clob, attr, 0, capa);
-
-        if (attr->ia_valid & ATTR_SIZE)
-                ll_truncate_free_capa(capa);
-        else
-                capa_put(capa);
-
-        return rc;
-}
-
 /* 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.
@@ -1552,7 +1534,6 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
         struct inode *inode = dentry->d_inode;
         struct ll_inode_info *lli = ll_i2info(inode);
         struct md_op_data *op_data = NULL;
-       bool file_is_released = false;
        int rc = 0;
        ENTRY;
 
@@ -1589,18 +1570,19 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
        }
 
         /* We mark all of the fields "set" so MDS/OST does not re-set them */
-        if (attr->ia_valid & ATTR_CTIME) {
-                attr->ia_ctime = CFS_CURRENT_TIME;
+       if (!(attr->ia_valid & ATTR_CTIME_SET) &&
+           (attr->ia_valid & ATTR_CTIME)) {
+               attr->ia_ctime = CURRENT_TIME;
                 attr->ia_valid |= ATTR_CTIME_SET;
         }
        if (!(attr->ia_valid & ATTR_ATIME_SET) &&
            (attr->ia_valid & ATTR_ATIME)) {
-                attr->ia_atime = CFS_CURRENT_TIME;
+               attr->ia_atime = CURRENT_TIME;
                 attr->ia_valid |= ATTR_ATIME_SET;
         }
        if (!(attr->ia_valid & ATTR_MTIME_SET) &&
            (attr->ia_valid & ATTR_MTIME)) {
-                attr->ia_mtime = CFS_CURRENT_TIME;
+               attr->ia_mtime = CURRENT_TIME;
                 attr->ia_valid |= ATTR_MTIME_SET;
         }
 
@@ -1609,106 +1591,87 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
                        cfs_time_current_sec());
 
-        /* We always do an MDS RPC, even if we're only changing the size;
-         * only the MDS knows whether truncate() should fail with -ETXTBUSY */
-
-        OBD_ALLOC_PTR(op_data);
-        if (op_data == NULL)
-                RETURN(-ENOMEM);
-
-       if (!S_ISDIR(inode->i_mode)) {
+       if (S_ISREG(inode->i_mode)) {
                if (attr->ia_valid & ATTR_SIZE)
                        inode_dio_write_done(inode);
-               mutex_unlock(&inode->i_mutex);
+               inode_unlock(inode);
        }
 
-       /* truncate on a released file must failed with -ENODATA,
-        * so size must not be set on MDS for released file
-        * but other attributes must be set
-        */
-       if (S_ISREG(inode->i_mode)) {
-               struct cl_layout cl = {
-                       .cl_is_released = false,
-               };
-               struct lu_env *env;
-               int refcheck;
-               __u32 gen;
-
-               rc = ll_layout_refresh(inode, &gen);
-               if (rc < 0)
-                       GOTO(out, rc);
-
-               /* XXX: the only place we need to know the layout type,
-                * this will be removed by a later patch. -Jinshan */
-               env = cl_env_get(&refcheck);
-               if (IS_ERR(env))
-                       GOTO(out, rc = PTR_ERR(env));
-
-               rc = cl_object_layout_get(env, lli->lli_clob, &cl);
-               cl_env_put(env, &refcheck);
-               if (rc < 0)
-                       GOTO(out, rc);
-
-               file_is_released = cl.cl_is_released;
-
-               if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
-                       if (file_is_released) {
-                               rc = ll_layout_restore(inode, 0, attr->ia_size);
-                               if (rc < 0)
-                                       GOTO(out, rc);
+       /* We always do an MDS RPC, even if we're only changing the size;
+        * only the MDS knows whether truncate() should fail with -ETXTBUSY */
 
-                               file_is_released = false;
-                               ll_layout_refresh(inode, &gen);
-                       }
+       OBD_ALLOC_PTR(op_data);
+       if (op_data == NULL)
+               GOTO(out, rc = -ENOMEM);
 
-                       /* If we are changing file size, file content is
-                        * modified, flag it. */
-                       attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
-                       spin_lock(&lli->lli_lock);
-                       lli->lli_flags |= LLIF_DATA_MODIFIED;
-                       spin_unlock(&lli->lli_lock);
-                       op_data->op_bias |= MDS_DATA_MODIFIED;
-               }
+       if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
+               /* If we are changing file size, file content is
+                * modified, flag it. */
+               attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
+               op_data->op_bias |= MDS_DATA_MODIFIED;
+               ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
        }
 
-       memcpy(&op_data->op_attr, attr, sizeof(*attr));
+       op_data->op_attr = *attr;
 
        rc = ll_md_setattr(dentry, op_data);
        if (rc)
                GOTO(out, rc);
 
-       /* RPC to MDT is sent, cancel data modification flag */
-       if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) {
-               spin_lock(&lli->lli_lock);
-               lli->lli_flags &= ~LLIF_DATA_MODIFIED;
-               spin_unlock(&lli->lli_lock);
-       }
-
-       if (!S_ISREG(inode->i_mode) || file_is_released)
+       if (!S_ISREG(inode->i_mode) || hsm_import)
                GOTO(out, rc = 0);
 
        if (attr->ia_valid & (ATTR_SIZE |
                              ATTR_ATIME | ATTR_ATIME_SET |
-                             ATTR_MTIME | ATTR_MTIME_SET)) {
+                             ATTR_MTIME | ATTR_MTIME_SET |
+                             ATTR_CTIME | ATTR_CTIME_SET)) {
                /* 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 */
-               if (attr->ia_valid & ATTR_SIZE)
-                       down_write(&lli->lli_trunc_sem);
-               rc = ll_setattr_ost(inode, attr);
-               if (attr->ia_valid & ATTR_SIZE)
-                       up_write(&lli->lli_trunc_sem);
+               rc = cl_setattr_ost(lli->lli_clob, attr, 0);
        }
+
+       /* If the file was restored, it needs to set dirty flag.
+        *
+        * We've already sent MDS_DATA_MODIFIED flag in
+        * ll_md_setattr() for truncate. However, the MDT refuses to
+        * set the HS_DIRTY flag on released files, so we have to set
+        * it again if the file has been restored. Please check how
+        * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
+        *
+        * Please notice that if the file is not released, the previous
+        * MDS_DATA_MODIFIED has taken effect and usually
+        * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
+        * This way we can save an RPC for common open + trunc
+        * operation. */
+       if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
+               struct hsm_state_set hss = {
+                       .hss_valid = HSS_SETMASK,
+                       .hss_setmask = HS_DIRTY,
+               };
+               int rc2;
+
+               rc2 = ll_hsm_state_set(inode, &hss);
+               /* truncate and write can happen at the same time, so that
+                * the file can be set modified even though the file is not
+                * restored from released state, and ll_hsm_state_set() is
+                * not applicable for the file, and rc2 < 0 is normal in this
+                * case. */
+               if (rc2 < 0)
+                       CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
+                              PFID(ll_inode2fid(inode)), rc2);
+       }
+
        EXIT;
 out:
        if (op_data != NULL)
                ll_finish_md_op_data(op_data);
 
-       if (!S_ISDIR(inode->i_mode)) {
-               mutex_lock(&inode->i_mutex);
+       if (S_ISREG(inode->i_mode)) {
+               inode_lock(inode);
                if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
                        inode_dio_wait(inode);
        }
@@ -1861,11 +1824,9 @@ int 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->mbo_valid & OBD_MD_FLEASIZE) != 0));
-       if (lsm != NULL)
+       if (body->mbo_valid & OBD_MD_FLEASIZE)
                cl_file_inode_init(inode, md);
 
        if (S_ISDIR(inode->i_mode)) {
@@ -1876,12 +1837,8 @@ int ll_update_inode(struct inode *inode, struct lustre_md *md)
                        return rc;
        }
 
-       if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
-               if (body->mbo_valid & OBD_MD_FLRMTPERM)
-                       ll_update_remote_perm(inode, md->remote_perm);
-       }
 #ifdef CONFIG_FS_POSIX_ACL
-       else if (body->mbo_valid & OBD_MD_FLACL) {
+       if (body->mbo_valid & OBD_MD_FLACL) {
                spin_lock(&lli->lli_lock);
                if (lli->lli_posix_acl)
                        posix_acl_release(lli->lli_posix_acl);
@@ -1967,19 +1924,15 @@ int ll_update_inode(struct inode *inode, struct lustre_md *md)
                        inode->i_blocks = body->mbo_blocks;
        }
 
-       if (body->mbo_valid & OBD_MD_FLMDSCAPA) {
-               LASSERT(md->mds_capa);
-               ll_add_capa(inode, md->mds_capa);
-       }
-
-       if (body->mbo_valid & OBD_MD_FLOSSCAPA) {
-               LASSERT(md->oss_capa);
-               ll_add_capa(inode, md->oss_capa);
-       }
-
        if (body->mbo_valid & OBD_MD_TSTATE) {
+               /* Set LLIF_FILE_RESTORING if restore ongoing and
+                * clear it when done to ensure to start again
+                * glimpsing updated attrs
+                */
                if (body->mbo_t_state & MS_RESTORE)
-                       lli->lli_flags |= LLIF_FILE_RESTORING;
+                       ll_file_set_flag(lli, LLIF_FILE_RESTORING);
+               else
+                       ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
        }
 
        return 0;
@@ -2009,10 +1962,10 @@ int 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;
-
-
+#ifdef HAVE_BACKING_DEV_INFO
+       /* initializing backing dev info. */
+       inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
+#endif
         if (S_ISREG(inode->i_mode)) {
                 struct ll_sb_info *sbi = ll_i2sbi(inode);
                 inode->i_op = &ll_file_inode_operations;
@@ -2103,7 +2056,6 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                struct iattr *attr;
                struct md_op_data *op_data;
                struct cl_object *obj;
-               struct obd_capa *capa;
 
                if (get_user(flags, (int __user *)arg))
                        RETURN(-EFAULT);
@@ -2132,10 +2084,7 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                        RETURN(-ENOMEM);
 
                attr->ia_valid = ATTR_ATTR_FLAG;
-
-               capa = ll_mdscapa_get(inode);
-               rc = cl_setattr_ost(obj, attr, flags, capa);
-               capa_put(capa);
+               rc = cl_setattr_ost(obj, attr, flags);
 
                OBD_FREE_PTR(attr);
                RETURN(rc);
@@ -2308,11 +2257,16 @@ int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
        } else {
                LASSERT(sb != NULL);
 
-                /*
-                 * At this point server returns to client's same fid as client
-                 * generated for creating. So using ->fid1 is okay here.
-                 */
-               LASSERT(fid_is_sane(&md.body->mbo_fid1));
+               /*
+                * At this point server returns to client's same fid as client
+                * generated for creating. So using ->fid1 is okay here.
+                */
+               if (!fid_is_sane(&md.body->mbo_fid1)) {
+                       CERROR("%s: Fid is insane "DFID"\n",
+                               ll_get_fsname(sb, NULL, 0),
+                               PFID(&md.body->mbo_fid1));
+                       GOTO(out, rc = -EINVAL);
+               }
 
                *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
                                             sbi->ll_flags & LL_SBI_32BIT_API),
@@ -2339,11 +2293,11 @@ int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
         * 2. layout was changed by another client
         * 3. proc2: refresh layout and layout lock granted
         * 4. proc1: to apply a stale layout */
-       if (it != NULL && it->d.lustre.it_lock_mode != 0) {
+       if (it != NULL && it->it_lock_mode != 0) {
                struct lustre_handle lockh;
                struct ldlm_lock *lock;
 
-               lockh.cookie = it->d.lustre.it_lock_handle;
+               lockh.cookie = it->it_lock_handle;
                lock = ldlm_handle2lock(&lockh);
                LASSERT(lock != NULL);
                if (ldlm_has_layout(lock)) {
@@ -2353,7 +2307,7 @@ int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
                        conf.coc_opc = OBJECT_CONF_SET;
                        conf.coc_inode = *inode;
                        conf.coc_lock = lock;
-                       conf.u.coc_md = &md;
+                       conf.u.coc_layout = md.layout;
                        (void)ll_layout_conf(*inode, &conf);
                }
                LDLM_LOCK_PUT(lock);
@@ -2362,8 +2316,6 @@ int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
        GOTO(out, rc = 0);
 
 out:
-       if (md.lsm != NULL)
-               obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
        md_free_lustre_md(sbi->ll_md_exp, &md);
 
 cleanup:
@@ -2380,7 +2332,6 @@ int ll_obd_statfs(struct inode *inode, void __user *arg)
         char *buf = NULL;
         struct obd_ioctl_data *data = NULL;
         __u32 type;
-       __u32 __user flags;     /* not user, but obd_iocontrol is abused */
         int len = 0, rc;
 
         if (!inode || !(sbi = ll_i2sbi(inode)))
@@ -2409,8 +2360,7 @@ int ll_obd_statfs(struct inode *inode, void __user *arg)
         else
                 GOTO(out_statfs, rc = -ENODEV);
 
-       flags = (type & LL_STATFS_NODELAY) ? OBD_STATFS_NODELAY : 0;
-       rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, &flags);
+       rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
         if (rc)
                 GOTO(out_statfs, rc);
 out_statfs:
@@ -2445,13 +2395,13 @@ int ll_process_config(struct lustre_cfg *lcfg)
        return rc;
 }
 
-/* this function prepares md_op_data hint for passing ot down to MD stack. */
-struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
-                                      struct inode *i1, struct inode *i2,
-                                      const char *name, size_t namelen,
-                                      __u32 mode, __u32 opc, void *data)
+/* this function prepares md_op_data hint for passing it down to MD stack. */
+struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
+                                     struct inode *i1, struct inode *i2,
+                                     const char *name, size_t namelen,
+                                     __u32 mode, __u32 opc, void *data)
 {
-        LASSERT(i1 != NULL);
+       LASSERT(i1 != NULL);
 
        if (name == NULL) {
                /* Do not reuse namelen for something else. */
@@ -2465,15 +2415,14 @@ struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
                        return ERR_PTR(-EINVAL);
        }
 
-        if (op_data == NULL)
-                OBD_ALLOC_PTR(op_data);
+       if (op_data == NULL)
+               OBD_ALLOC_PTR(op_data);
 
-        if (op_data == NULL)
-                return ERR_PTR(-ENOMEM);
+       if (op_data == NULL)
+               return ERR_PTR(-ENOMEM);
 
        ll_i2gids(op_data->op_suppgids, i1, i2);
        op_data->op_fid1 = *ll_inode2fid(i1);
-       op_data->op_capa1 = ll_mdscapa_get(i1);
        op_data->op_default_stripe_offset = -1;
        if (S_ISDIR(i1->i_mode)) {
                op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
@@ -2484,12 +2433,10 @@ struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
 
        if (i2) {
                op_data->op_fid2 = *ll_inode2fid(i2);
-               op_data->op_capa2 = ll_mdscapa_get(i2);
                if (S_ISDIR(i2->i_mode))
                        op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
        } else {
                fid_zero(&op_data->op_fid2);
-               op_data->op_capa2 = NULL;
        }
 
        if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
@@ -2505,8 +2452,6 @@ struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
        op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
        op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
        op_data->op_cap = cfs_curproc_cap_pack();
-       op_data->op_bias = 0;
-       op_data->op_cli_flags = 0;
        if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
             filename_is_volatile(name, namelen, &op_data->op_mds)) {
                op_data->op_bias |= MDS_CREATE_VOLATILE;
@@ -2515,17 +2460,11 @@ struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
        }
        op_data->op_data = data;
 
-       /* When called by ll_setattr_raw, file is i1. */
-       if (LLIF_DATA_MODIFIED & ll_i2info(i1)->lli_flags)
-               op_data->op_bias |= MDS_DATA_MODIFIED;
-
        return op_data;
 }
 
 void ll_finish_md_op_data(struct md_op_data *op_data)
 {
-        capa_put(op_data->op_capa1);
-        capa_put(op_data->op_capa2);
         OBD_FREE_PTR(op_data);
 }
 
@@ -2563,6 +2502,9 @@ int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
        if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
                seq_puts(seq, ",user_fid2path");
 
+       if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
+               seq_puts(seq, ",always_ping");
+
         RETURN(0);
 }
 
@@ -2786,8 +2728,8 @@ static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
  */
 int ll_getparent(struct file *file, struct getparent __user *arg)
 {
-       struct dentry           *dentry = file->f_dentry;
-       struct inode            *inode = file->f_dentry->d_inode;
+       struct dentry           *dentry = file_dentry(file);
+       struct inode            *inode = file_inode(file);
        struct linkea_data      *ldata;
        struct lu_buf            buf = LU_BUF_NULL;
        struct lu_name           ln;