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LU-6179 llite: Implement ladvise lockahead
[fs/lustre-release.git] / lustre / llite / llite_lib.c
index 89a0de2..87159a0 100644 (file)
  *
  * You should have received a copy of the GNU General Public License
  * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -27,7 +23,7 @@
  * 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, 2016, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -42,6 +38,7 @@
 
 #include <linux/module.h>
 #include <linux/statfs.h>
+#include <linux/time.h>
 #include <linux/types.h>
 #include <linux/version.h>
 #include <linux/mm.h>
 #ifdef HAVE_UIDGID_HEADER
 # include <linux/uidgid.h>
 #endif
+#include <linux/security.h>
 
-#include <lustre_ioctl.h>
+#include <uapi/linux/lustre/lustre_ioctl.h>
 #include <lustre_ha.h>
 #include <lustre_dlm.h>
 #include <lprocfs_status.h>
 #include <lustre_disk.h>
-#include <lustre_param.h>
+#include <uapi/linux/lustre/lustre_param.h>
 #include <lustre_log.h>
 #include <cl_object.h>
 #include <obd_cksum.h>
@@ -63,9 +61,6 @@
 
 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 +101,11 @@ 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 +114,7 @@ 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 +130,7 @@ 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 +147,6 @@ 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) {
@@ -170,13 +158,18 @@ static void ll_free_sbi(struct super_block *sb)
        EXIT;
 }
 
+static inline int obd_connect_has_secctx(struct obd_connect_data *data)
+{
+       return data->ocd_connect_flags & OBD_CONNECT_FLAGS2 &&
+              data->ocd_connect_flags2 & OBD_CONNECT2_FILE_SECCTX;
+}
+
 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                                     struct vfsmount *mnt)
 {
        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;
@@ -203,30 +196,36 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                 RETURN(-ENOMEM);
         }
 
-        /* indicate the features supported by this client */
+       /* indicate MDT features supported by this client */
         data->ocd_connect_flags = OBD_CONNECT_IBITS    | OBD_CONNECT_NODEVOH  |
                                   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|
+                                 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 | OBD_CONNECT_MULTIMODRPCS;
+
+       data->ocd_connect_flags2 = 0;
 
 #ifdef HAVE_LRU_RESIZE_SUPPORT
         if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
                 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
 #endif
 #ifdef CONFIG_FS_POSIX_ACL
-        data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
+       data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK |
+                                  OBD_CONNECT_LARGE_ACL;
 #endif
 
        if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
@@ -242,12 +241,11 @@ 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;
+#ifdef MS_NOSEC
+       /* Setting this indicates we correctly support S_NOSEC (See kernel
+        * commit 9e1f1de02c2275d7172e18dc4e7c2065777611bf)
+        */
+       sb->s_flags |= MS_NOSEC;
 #endif
 
         if (sbi->ll_flags & LL_SBI_FLOCK)
@@ -257,10 +255,13 @@ 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;
+
+#ifdef HAVE_SECURITY_DENTRY_INIT_SECURITY
+       data->ocd_connect_flags2 |= OBD_CONNECT2_FILE_SECCTX;
+#endif /* HAVE_SECURITY_DENTRY_INIT_SECURITY */
 
        data->ocd_brw_size = MD_MAX_BRW_SIZE;
 
@@ -307,15 +308,15 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
            valid != CLIENT_CONNECT_MDT_REQD) {
                char *buf;
 
-               OBD_ALLOC_WAIT(buf, PAGE_CACHE_SIZE);
-               obd_connect_flags2str(buf, PAGE_CACHE_SIZE,
-                                     valid ^ CLIENT_CONNECT_MDT_REQD, ",");
+               OBD_ALLOC_WAIT(buf, PAGE_SIZE);
+               obd_connect_flags2str(buf, PAGE_SIZE,
+                                     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 "
                                   "server or downgrade client.\n",
                                   sbi->ll_md_exp->exp_obd->obd_name, buf);
-               OBD_FREE(buf, PAGE_CACHE_SIZE);
+               OBD_FREE(buf, PAGE_SIZE);
                GOTO(out_md_fid, err = -EPROTO);
        }
 
@@ -329,12 +330,12 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
        }
 
        LASSERT(osfs->os_bsize);
-        sb->s_blocksize = osfs->os_bsize;
-        sb->s_blocksize_bits = log2(osfs->os_bsize);
-        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;
+       sb->s_blocksize = osfs->os_bsize;
+       sb->s_blocksize_bits = log2(osfs->os_bsize);
+       sb->s_magic = LL_SUPER_MAGIC;
+       sb->s_maxbytes = MAX_LFS_FILESIZE;
+       sbi->ll_namelen = osfs->os_namelen;
+       sbi->ll_mnt.mnt = current->fs->root.mnt;
 
         if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
             !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
@@ -356,45 +357,22 @@ 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;
 
-       if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
-               sbi->ll_md_brw_pages = data->ocd_brw_size >> PAGE_CACHE_SHIFT;
-       else
-               sbi->ll_md_brw_pages = 1;
-
        if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
                sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
 
+       if (obd_connect_has_secctx(data))
+               sbi->ll_flags |= LL_SBI_FILE_SECCTX;
+
        if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
                if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
                        LCONSOLE_INFO("%s: disabling xattr cache due to "
                                      "unknown maximum xattr size.\n", dt);
-               } else {
+               } else if (!sbi->ll_xattr_cache_set) {
+                       /* If xattr_cache is already set (no matter 0 or 1)
+                        * during processing llog, it won't be enabled here. */
                        sbi->ll_flags |= LL_SBI_XATTR_CACHE;
                        sbi->ll_xattr_cache_enabled = 1;
                }
@@ -406,44 +384,70 @@ 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;
+
+       /* indicate OST features supported by this client */
+       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 |
+                                 OBD_CONNECT_FLAGS2;
+
+/* The client currently advertises support for OBD_CONNECT_LOCKAHEAD_OLD so it
+ * can interoperate with an older version of lockahead which was released prior
+ * to landing in master. This support will be dropped when 2.13 development
+ * starts.  At the point, we should not just drop the connect flag (below), we
+ * should also remove the support in the code.
+ *
+ * Removing it means a few things:
+ * 1. Remove this section here
+ * 2. Remove CEF_NONBLOCK in ll_file_lockahead()
+ * 3. Remove function exp_connect_lockahead_old
+ * 4. Remove LDLM_FL_LOCKAHEAD_OLD_RESERVED in lustre_dlm_flags.h
+ * */
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 12, 50, 0)
+       data->ocd_connect_flags |= OBD_CONNECT_LOCKAHEAD_OLD;
+#endif
 
-        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;
+       data->ocd_connect_flags2 = OBD_CONNECT2_LOCKAHEAD;
 
-               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();
-        }
+       if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
+               data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
+
+       /* 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: %#llx 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 +482,8 @@ 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);
@@ -492,17 +497,17 @@ 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;
+#ifdef HAVE_XATTR_HANDLER_FLAGS
+       sb->s_xattr = ll_xattr_handlers;
+#endif
 #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 +516,10 @@ 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 +535,45 @@ 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) {
@@ -581,58 +585,72 @@ 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 (proc_lustre_fs_root != NULL) {
-               err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
-                                                 dt, md);
+       if (data != NULL)
+               OBD_FREE_PTR(data);
+       if (osfs != NULL)
+               OBD_FREE_PTR(osfs);
+
+       if (sbi->ll_proc_root != NULL) {
+               err = lprocfs_ll_register_obd(sb, dt);
                if (err < 0) {
-                       CERROR("%s: could not register mount in lprocfs: "
-                              "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
+                       CERROR("%s: could not register %s in llite: rc = %d\n",
+                              dt, ll_get_fsname(sb, NULL, 0), err);
+                       err = 0;
+               }
+               err = lprocfs_ll_register_obd(sb, md);
+               if (err < 0) {
+                       CERROR("%s: could not register %s in llite: rc = %d\n",
+                              md, ll_get_fsname(sb, NULL, 0), err);
                        err = 0;
                }
        }
 
-        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);
@@ -692,104 +710,24 @@ int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
        RETURN(rc);
 }
 
-int ll_get_max_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
-{
-       int size, rc;
-
-       size = sizeof(int);
-       rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_COOKIESIZE),
-                         KEY_MAX_COOKIESIZE, &size, lmmsize);
-       if (rc)
-               CERROR("Get max cookiesize error rc %d\n", rc);
-
-       RETURN(rc);
-}
-
-int ll_get_default_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
-{
-       int size, rc;
-
-       size = sizeof(int);
-       rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_COOKIESIZE),
-                         KEY_DEFAULT_COOKIESIZE, &size, lmmsize);
-       if (rc)
-               CERROR("Get default cookiesize error rc %d\n", rc);
-
-       RETURN(rc);
-}
-
-static void ll_dump_inode(struct inode *inode)
-{
-       struct ll_d_hlist_node *tmp;
-       int dentry_count = 0;
-
-       LASSERT(inode != NULL);
-
-       ll_d_hlist_for_each(tmp, &inode->i_dentry)
-               dentry_count++;
-
-       CERROR("%s: inode %p dump: dev=%s fid="DFID
-              " mode=%o count=%u, %d dentries\n",
-              ll_get_fsname(inode->i_sb, NULL, 0), inode,
-              ll_i2mdexp(inode)->exp_obd->obd_name, PFID(ll_inode2fid(inode)),
-              inode->i_mode, atomic_read(&inode->i_count), dentry_count);
-}
-
-void lustre_dump_dentry(struct dentry *dentry, int recur)
-{
-        struct list_head *tmp;
-        int subdirs = 0;
-
-        LASSERT(dentry != NULL);
-
-        list_for_each(tmp, &dentry->d_subdirs)
-                subdirs++;
-
-        CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
-               " 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, ll_d_count(dentry),
-               dentry->d_flags, dentry->d_fsdata, subdirs);
-        if (dentry->d_inode != NULL)
-                ll_dump_inode(dentry->d_inode);
-
-        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);
-       }
-}
-
 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);
+       struct ll_sb_info *sbi = ll_s2sbi(sb);
+       ENTRY;
 
-       list_del(&sbi->ll_conn_chain);
+       cl_sb_fini(sb);
 
        obd_fid_fini(sbi->ll_dt_exp->exp_obd);
-        obd_disconnect(sbi->ll_dt_exp);
-        sbi->ll_dt_exp = NULL;
+       obd_disconnect(sbi->ll_dt_exp);
+       sbi->ll_dt_exp = NULL;
 
-        lprocfs_unregister_mountpoint(sbi);
+       lprocfs_ll_unregister_mountpoint(sbi);
 
        obd_fid_fini(sbi->ll_md_exp->exp_obd);
-        obd_disconnect(sbi->ll_md_exp);
-        sbi->ll_md_exp = NULL;
+       obd_disconnect(sbi->ll_md_exp);
+       sbi->ll_md_exp = NULL;
 
-        EXIT;
+       EXIT;
 }
 
 void ll_kill_super(struct super_block *sb)
@@ -871,11 +809,18 @@ 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;
@@ -932,6 +877,11 @@ 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);
@@ -950,17 +900,10 @@ void ll_lli_init(struct ll_inode_info *lli)
 {
        lli->lli_inode_magic = LLI_INODE_MAGIC;
        lli->lli_flags = 0;
-       lli->lli_maxbytes = MAX_LFS_FILESIZE;
        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;
@@ -997,6 +940,7 @@ void ll_lli_init(struct ll_inode_info *lli)
                lli->lli_async_rc = 0;
        }
        mutex_init(&lli->lli_layout_mutex);
+       memset(lli->lli_jobid, 0, LUSTRE_JOBID_SIZE);
 }
 
 static inline int ll_bdi_register(struct backing_dev_info *bdi)
@@ -1010,22 +954,24 @@ static inline int ll_bdi_register(struct backing_dev_info *bdi)
 
 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
 {
-        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;
-        /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
-        const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
-        int    err;
-        ENTRY;
+       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;
+       /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
+       const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
+       int     md_len = 0;
+       int     dt_len = 0;
+       int     err;
+       ENTRY;
 
-        CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
+       CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 
-        OBD_ALLOC_PTR(cfg);
-        if (cfg == NULL)
-                RETURN(-ENOMEM);
+       OBD_ALLOC_PTR(cfg);
+       if (cfg == NULL)
+               RETURN(-ENOMEM);
 
        try_module_get(THIS_MODULE);
 
@@ -1037,76 +983,99 @@ int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
                RETURN(-ENOMEM);
        }
 
-        err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
-        if (err)
-                GOTO(out_free, err);
+       err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
+       if (err)
+               GOTO(out_free, err);
 
        err = bdi_init(&lsi->lsi_bdi);
        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);
 
-        sb->s_bdi = &lsi->lsi_bdi;
+       sb->s_bdi = &lsi->lsi_bdi;
 #ifndef HAVE_DCACHE_LOCK
        /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
        sb->s_d_op = &ll_d_ops;
 #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.*/
-        cfg->cfg_instance = sb;
-        cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
+       /* Call lprocfs_ll_register_mountpoint() before lustre_process_log()
+        * so that "llite.*.*" params can be processed correctly. */
+       if (proc_lustre_fs_root != NULL) {
+               err = lprocfs_ll_register_mountpoint(proc_lustre_fs_root, sb);
+               if (err < 0) {
+                       CERROR("%s: could not register mountpoint in llite: "
+                              "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
+                       err = 0;
+               }
+       }
+
+       /* 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.*/
+       cfg->cfg_instance = sb;
+       cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
        cfg->cfg_callback = class_config_llog_handler;
-        /* set up client obds */
-        err = lustre_process_log(sb, profilenm, cfg);
+       cfg->cfg_sub_clds = CONFIG_SUB_CLIENT;
+       /* set up client obds */
+       err = lustre_process_log(sb, profilenm, cfg);
        if (err < 0)
-               GOTO(out_free, err);
-
-        /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
-        lprof = class_get_profile(profilenm);
-        if (lprof == NULL) {
-                LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
-                                   " read from the MGS.  Does that filesystem "
-                                   "exist?\n", profilenm);
-                GOTO(out_free, err = -EINVAL);
-        }
-        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) + instlen + 2);
-        if (!dt)
-                GOTO(out_free, err = -ENOMEM);
-        sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
-
-        OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
-        if (!md)
-                GOTO(out_free, err = -ENOMEM);
-        sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
-
-        /* connections, registrations, sb setup */
-        err = client_common_fill_super(sb, md, dt, mnt);
+               GOTO(out_proc, err);
+
+       /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
+       lprof = class_get_profile(profilenm);
+       if (lprof == NULL) {
+               LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
+                                  " read from the MGS.  Does that filesystem "
+                                  "exist?\n", profilenm);
+               GOTO(out_proc, err = -EINVAL);
+       }
+       CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
+              lprof->lp_md, lprof->lp_dt);
+
+       dt_len = strlen(lprof->lp_dt) + instlen + 2;
+       OBD_ALLOC(dt, dt_len);
+       if (!dt)
+               GOTO(out_proc, err = -ENOMEM);
+       snprintf(dt, dt_len - 1, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
+
+       md_len = strlen(lprof->lp_md) + instlen + 2;
+       OBD_ALLOC(md, md_len);
+       if (!md)
+               GOTO(out_proc, err = -ENOMEM);
+       snprintf(md, md_len - 1, "%s-%p", lprof->lp_md, cfg->cfg_instance);
+
+       /* connections, registrations, sb setup */
+       err = client_common_fill_super(sb, md, dt, mnt);
        if (err < 0)
-               GOTO(out_free, err);
+               GOTO(out_proc, err);
 
        sbi->ll_client_common_fill_super_succeeded = 1;
 
+out_proc:
+       if (err < 0)
+               lprocfs_ll_unregister_mountpoint(sbi);
 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);
-
-        OBD_FREE_PTR(cfg);
-        RETURN(err);
+       if (md)
+               OBD_FREE(md, md_len);
+       if (dt)
+               OBD_FREE(dt, dt_len);
+       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);
 } /* ll_fill_super */
 
 void ll_put_super(struct super_block *sb)
@@ -1122,8 +1091,6 @@ 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);
 
@@ -1217,7 +1184,7 @@ 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);
 
@@ -1261,9 +1228,11 @@ 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;
@@ -1363,15 +1332,42 @@ 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);
@@ -1453,24 +1449,16 @@ 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) {
+       forget_all_cached_acls(inode);
+       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))
@@ -1530,7 +1518,11 @@ 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);
@@ -1539,26 +1531,6 @@ 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.
@@ -1579,7 +1551,6 @@ 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;
 
@@ -1599,7 +1570,7 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
                  * 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 "DFID" too large %llu > "LPU64"\n",
+                       CDEBUG(D_INODE,"file "DFID" too large %llu > %llu\n",
                                PFID(&lli->lli_fid), attr->ia_size,
                                ll_file_maxbytes(inode));
                         RETURN(-EFBIG);
@@ -1616,128 +1587,116 @@ 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(inode);
                 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(inode);
                 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(inode);
                 attr->ia_valid |= ATTR_MTIME_SET;
         }
 
         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
-                CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
+               CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %llu\n",
                        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);
+                      (s64)ktime_get_real_seconds());
 
-       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));
+       /* We always do an MDS RPC, even if we're only changing the size;
+        * only the MDS knows whether truncate() should fail with -ETXTBUSY */
 
-               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);
-
-                               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);
+               /* Once we've got the i_mutex, it's safe to set the S_NOSEC
+                * flag.  ll_update_inode (called from ll_md_setattr), clears
+                * inode flags, so there is a gap where S_NOSEC is not set.
+                * This can cause a writer to take the i_mutex unnecessarily,
+                * but this is safe to do and should be rare. */
+               inode_has_no_xattr(inode);
        }
 
        ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
@@ -1773,6 +1732,10 @@ int ll_setattr(struct dentry *de, struct iattr *attr)
            !(attr->ia_valid & ATTR_KILL_SGID))
                attr->ia_valid |= ATTR_KILL_SGID;
 
+       /* avoid polluted from ATTR_TIMES_SET,
+        * projid is not expected to be set here */
+       attr->ia_valid &= ~MDS_ATTR_PROJID;
+
        return ll_setattr_raw(de, attr, false);
 }
 
@@ -1792,7 +1755,7 @@ int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
 
         osfs->os_type = sb->s_magic;
 
-        CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
+       CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
 
         if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
@@ -1804,7 +1767,7 @@ int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
                 RETURN(rc);
         }
 
-        CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
+       CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
                obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
                obd_osfs.os_files);
 
@@ -1832,7 +1795,7 @@ int ll_statfs(struct dentry *de, struct kstatfs *sfs)
        __u64 fsid = huge_encode_dev(sb->s_dev);
        int rc;
 
-        CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
+       CDEBUG(D_VFSTRACE, "VFS Op: at %llu jiffies\n", get_jiffies_64());
         ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
 
         /* Some amount of caching on the client is allowed */
@@ -1888,32 +1851,23 @@ 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);
+       int rc = 0;
 
-       LASSERT((lsm != NULL) == ((body->mbo_valid & OBD_MD_FLEASIZE) != 0));
-       if (lsm != NULL) {
-               cl_file_inode_init(inode, md);
-
-               lli->lli_maxbytes = lsm->lsm_maxbytes;
-               if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
-                       lli->lli_maxbytes = MAX_LFS_FILESIZE;
+       if (body->mbo_valid & OBD_MD_FLEASIZE) {
+               rc = cl_file_inode_init(inode, md);
+               if (rc)
+                       return rc;
        }
 
        if (S_ISDIR(inode->i_mode)) {
-               int     rc;
-
                rc = ll_update_lsm_md(inode, md);
                if (rc != 0)
                        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);
@@ -1934,7 +1888,7 @@ int ll_update_inode(struct inode *inode, struct lustre_md *md)
        if (body->mbo_valid & OBD_MD_FLMTIME) {
                if (body->mbo_mtime > LTIME_S(inode->i_mtime)) {
                        CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
-                              "to "LPU64"\n", inode->i_ino,
+                              "to %llu\n", inode->i_ino,
                               LTIME_S(inode->i_mtime), body->mbo_mtime);
                        LTIME_S(inode->i_mtime) = body->mbo_mtime;
                }
@@ -1947,6 +1901,9 @@ int ll_update_inode(struct inode *inode, struct lustre_md *md)
                lli->lli_ctime = body->mbo_ctime;
        }
 
+       /* Clear i_flags to remove S_NOSEC before permissions are updated */
+       if (body->mbo_valid & OBD_MD_FLFLAGS)
+               inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
        if (body->mbo_valid & OBD_MD_FLMODE)
                inode->i_mode = (inode->i_mode & S_IFMT) |
                                (body->mbo_mode & ~S_IFMT);
@@ -1966,8 +1923,8 @@ int ll_update_inode(struct inode *inode, struct lustre_md *md)
                inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
        if (body->mbo_valid & OBD_MD_FLGID)
                inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
-       if (body->mbo_valid & OBD_MD_FLFLAGS)
-               inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
+       if (body->mbo_valid & OBD_MD_FLPROJID)
+               lli->lli_projid = body->mbo_projid;
        if (body->mbo_valid & OBD_MD_FLNLINK)
                set_nlink(inode, body->mbo_nlink);
        if (body->mbo_valid & OBD_MD_FLRDEV)
@@ -1999,19 +1956,15 @@ 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;
@@ -2041,10 +1994,10 @@ 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;
@@ -2135,7 +2088,6 @@ 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);
@@ -2164,10 +2116,7 @@ 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);
@@ -2201,6 +2150,8 @@ void ll_umount_begin(struct super_block *sb)
        struct ll_sb_info *sbi = ll_s2sbi(sb);
        struct obd_device *obd;
        struct obd_ioctl_data *ioc_data;
+       struct l_wait_info lwi;
+       wait_queue_head_t waitq;
        ENTRY;
 
        CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
@@ -2208,7 +2159,7 @@ void ll_umount_begin(struct super_block *sb)
 
        obd = class_exp2obd(sbi->ll_md_exp);
        if (obd == NULL) {
-               CERROR("Invalid MDC connection handle "LPX64"\n",
+               CERROR("Invalid MDC connection handle %#llx\n",
                       sbi->ll_md_exp->exp_handle.h_cookie);
                EXIT;
                return;
@@ -2217,7 +2168,7 @@ void ll_umount_begin(struct super_block *sb)
 
         obd = class_exp2obd(sbi->ll_dt_exp);
         if (obd == NULL) {
-                CERROR("Invalid LOV connection handle "LPX64"\n",
+               CERROR("Invalid LOV connection handle %#llx\n",
                        sbi->ll_dt_exp->exp_handle.h_cookie);
                 EXIT;
                 return;
@@ -2236,10 +2187,14 @@ void ll_umount_begin(struct super_block *sb)
        }
 
        /* Really, we'd like to wait until there are no requests outstanding,
-        * and then continue.  For now, we just invalidate the requests,
-        * schedule() and sleep one second if needed, and hope.
+        * and then continue.  For now, we just periodically checking for vfs
+        * to decrement mnt_cnt and hope to finish it within 10sec.
         */
-       schedule();
+       init_waitqueue_head(&waitq);
+       lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(10),
+                                  cfs_time_seconds(1), NULL, NULL);
+       l_wait_event(waitq, may_umount(sbi->ll_mnt.mnt), &lwi);
+
        EXIT;
 }
 
@@ -2310,7 +2265,7 @@ void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
 
        op_data->op_fid1 = body->mbo_fid1;
        op_data->op_handle = body->mbo_handle;
-       op_data->op_mod_time = cfs_time_current_sec();
+       op_data->op_mod_time = ktime_get_real_seconds();
        md_close(exp, op_data, NULL, &close_req);
        ptlrpc_req_finished(close_req);
        ll_finish_md_op_data(op_data);
@@ -2340,11 +2295,16 @@ 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),
@@ -2371,11 +2331,11 @@ 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)) {
@@ -2385,7 +2345,7 @@ 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);
@@ -2394,8 +2354,6 @@ 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:
@@ -2412,7 +2370,6 @@ 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)))
@@ -2441,14 +2398,12 @@ 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:
-        if (buf)
-                obd_ioctl_freedata(buf, len);
-        return rc;
+       OBD_FREE_LARGE(buf, len);
+       return rc;
 }
 
 int ll_process_config(struct lustre_cfg *lcfg)
@@ -2477,13 +2432,13 @@ 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. */
@@ -2497,15 +2452,14 @@ 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;
@@ -2516,12 +2470,10 @@ 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)
@@ -2537,8 +2489,6 @@ 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;
@@ -2547,17 +2497,13 @@ 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);
+       security_release_secctx(op_data->op_file_secctx,
+                               op_data->op_file_secctx_size);
         OBD_FREE_PTR(op_data);
 }
 
@@ -2595,6 +2541,9 @@ 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);
 }
 
@@ -2734,7 +2683,7 @@ void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
        struct root_squash_info *squash = &sbi->ll_squash;
        int i;
        bool matched;
-       lnet_process_id_t id;
+       struct lnet_process_id id;
 
        /* Update norootsquash flag */
        down_write(&squash->rsi_sem);
@@ -2779,7 +2728,7 @@ static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
        int             rc;
        ENTRY;
 
-       rc = linkea_init(ldata);
+       rc = linkea_init_with_rec(ldata);
        if (rc < 0)
                RETURN(rc);
 
@@ -2818,8 +2767,7 @@ 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 inode            *inode = file_inode(file);
        struct linkea_data      *ldata;
        struct lu_buf            buf = LU_BUF_NULL;
        struct lu_name           ln;
@@ -2851,7 +2799,13 @@ int ll_getparent(struct file *file, struct getparent __user *arg)
        if (rc < 0)
                GOTO(ldata_free, rc);
 
-       rc = ll_getxattr(dentry, XATTR_NAME_LINK, buf.lb_buf, buf.lb_len);
+#ifdef HAVE_XATTR_HANDLER_FLAGS
+       rc = ll_xattr_list(inode, XATTR_NAME_LINK, XATTR_TRUSTED_T, buf.lb_buf,
+                          buf.lb_len, OBD_MD_FLXATTR);
+#else
+       rc = ll_getxattr(file_dentry(file), XATTR_NAME_LINK, buf.lb_buf,
+                        buf.lb_len);
+#endif /* HAVE_XATTR_HANDLER_FLAGS */
        if (rc < 0)
                GOTO(lb_free, rc);