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b=22615 fixes for regressions caused by 11063
[fs/lustre-release.git] / lustre / llite / llite_lib.c
index fc3ab33..77561d1 100644 (file)
@@ -16,8 +16,8 @@
  * in the LICENSE file that accompanied this code).
  *
  * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see [sun.com URL with a
- * copy of GPLv2].
+ * 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
 #include <lustre_disk.h>
 #include <lustre_param.h>
 #include <lustre_log.h>
+#include <cl_object.h>
 #include <obd_cksum.h>
-#include <lustre_cache.h>
 #include "llite_internal.h"
 
 cfs_mem_cache_t *ll_file_data_slab;
 
-LIST_HEAD(ll_super_blocks);
-spinlock_t ll_sb_lock = SPIN_LOCK_UNLOCKED;
+CFS_LIST_HEAD(ll_super_blocks);
+cfs_spinlock_t ll_sb_lock = CFS_SPIN_LOCK_UNLOCKED;
 
 extern struct address_space_operations ll_aops;
 extern struct address_space_operations ll_dir_aops;
 
 #ifndef log2
-#define log2(n) ffz(~(n))
+#define log2(n) cfs_ffz(~(n))
 #endif
 
-
 static struct ll_sb_info *ll_init_sbi(void)
 {
         struct ll_sb_info *sbi = NULL;
@@ -83,35 +82,39 @@ static struct ll_sb_info *ll_init_sbi(void)
         if (!sbi)
                 RETURN(NULL);
 
-        spin_lock_init(&sbi->ll_lock);
-        spin_lock_init(&sbi->ll_lco.lco_lock);
-        spin_lock_init(&sbi->ll_pp_extent_lock);
-        spin_lock_init(&sbi->ll_process_lock);
+        cfs_spin_lock_init(&sbi->ll_lock);
+        cfs_init_mutex(&sbi->ll_lco.lco_lock);
+        cfs_spin_lock_init(&sbi->ll_pp_extent_lock);
+        cfs_spin_lock_init(&sbi->ll_process_lock);
         sbi->ll_rw_stats_on = 0;
-        INIT_LIST_HEAD(&sbi->ll_pglist);
 
         si_meminfo(&si);
         pages = si.totalram - si.totalhigh;
-        if (pages >> (20 - CFS_PAGE_SHIFT) < 512)
+        if (pages >> (20 - CFS_PAGE_SHIFT) < 512) {
+#ifdef HAVE_BGL_SUPPORT
+                sbi->ll_async_page_max = pages / 4;
+#else
                 sbi->ll_async_page_max = pages / 2;
-        else
+#endif
+        } else {
                 sbi->ll_async_page_max = (pages / 4) * 3;
-        sbi->ll_ra_info.ra_max_pages = min(num_physpages / 8,
+        }
+
+        sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
                                            SBI_DEFAULT_READAHEAD_MAX);
+        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;
-        sbi->ll_contention_time = SBI_DEFAULT_CONTENTION_SECONDS;
-        sbi->ll_lockless_truncate_enable = SBI_DEFAULT_LOCKLESS_TRUNCATE_ENABLE;
-        INIT_LIST_HEAD(&sbi->ll_conn_chain);
-        INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
+        CFS_INIT_LIST_HEAD(&sbi->ll_conn_chain);
+        CFS_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);
+        cfs_spin_lock(&ll_sb_lock);
+        cfs_list_add_tail(&sbi->ll_list, &ll_super_blocks);
+        cfs_spin_unlock(&ll_sb_lock);
 
 #ifdef ENABLE_LLITE_CHECKSUM
         sbi->ll_flags |= LL_SBI_CHECKSUM;
@@ -121,17 +124,17 @@ static struct ll_sb_info *ll_init_sbi(void)
         sbi->ll_flags |= LL_SBI_LRU_RESIZE;
 #endif
 
-#ifdef HAVE_EXPORT___IGET
-        INIT_LIST_HEAD(&sbi->ll_deathrow);
-        spin_lock_init(&sbi->ll_deathrow_lock);
-#endif
         for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
-                spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_r_hist.oh_lock);
-                spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_w_hist.oh_lock);
+                cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
+                                   pp_r_hist.oh_lock);
+                cfs_spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. \
+                                   pp_w_hist.oh_lock);
         }
 
         /* metadata statahead is enabled by default */
         sbi->ll_sa_max = LL_SA_RPC_DEF;
+        atomic_set(&sbi->ll_sa_total, 0);
+        atomic_set(&sbi->ll_sa_wrong, 0);
 
         RETURN(sbi);
 }
@@ -142,66 +145,30 @@ 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);
+                cfs_spin_lock(&ll_sb_lock);
+                cfs_list_del(&sbi->ll_list);
+                cfs_spin_unlock(&ll_sb_lock);
                 OBD_FREE(sbi, sizeof(*sbi));
         }
         EXIT;
 }
 
 static struct dentry_operations ll_d_root_ops = {
-#ifdef DCACHE_LUSTRE_INVALID
         .d_compare = ll_dcompare,
-#endif
+        .d_revalidate = ll_revalidate_nd,
 };
 
-/* Initialize the default and maximum LOV EA and cookie sizes.  This allows
- * us to make MDS RPCs with large enough reply buffers to hold the
- * maximum-sized (= maximum striped) EA and cookie without having to
- * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
-static int ll_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
-{
-        struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC };
-        __u32 valsize = sizeof(struct lov_desc);
-        int rc, easize, def_easize, cookiesize;
-        struct lov_desc desc;
-        __u32 stripes;
-        ENTRY;
-
-        rc = obd_get_info(dt_exp, sizeof(KEY_LOVDESC), KEY_LOVDESC,
-                          &valsize, &desc);
-        if (rc)
-                RETURN(rc);
-
-        stripes = min(desc.ld_tgt_count, (__u32)LOV_MAX_STRIPE_COUNT);
-        lsm.lsm_stripe_count = stripes;
-        easize = obd_size_diskmd(dt_exp, &lsm);
-
-        lsm.lsm_stripe_count = desc.ld_default_stripe_count;
-        def_easize = obd_size_diskmd(dt_exp, &lsm);
-
-        cookiesize = stripes * sizeof(struct llog_cookie);
-
-        CDEBUG(D_HA, "updating max_mdsize/max_cookiesize: %d/%d\n",
-               easize, cookiesize);
-
-        rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize);
-        RETURN(rc);
-}
-
 static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
 {
         struct inode *root = 0;
         struct ll_sb_info *sbi = ll_s2sbi(sb);
         struct obd_device *obd;
-        struct lu_fid rootfid;
         struct obd_capa *oc = NULL;
         struct obd_statfs osfs;
         struct ptlrpc_request *request = NULL;
-        struct lustre_handle dt_conn = {0, };
-        struct lustre_handle md_conn = {0, };
         struct obd_connect_data *data = NULL;
+        struct obd_uuid *uuid;
+        struct md_op_data *op_data;
         struct lustre_md lmd;
         obd_valid valid;
         int size, err, checksum;
@@ -229,7 +196,9 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                                   OBD_CONNECT_JOIN     | OBD_CONNECT_ATTRFID  |
                                   OBD_CONNECT_VERSION  | OBD_CONNECT_MDS_CAPA |
                                   OBD_CONNECT_OSS_CAPA | OBD_CONNECT_CANCELSET|
-                                  OBD_CONNECT_FID      | OBD_CONNECT_AT;
+                                  OBD_CONNECT_FID      | OBD_CONNECT_AT |
+                                  OBD_CONNECT_LOV_V3 | OBD_CONNECT_RMT_CLIENT |
+                                  OBD_CONNECT_VBR      | OBD_CONNECT_SOM;
 
 #ifdef HAVE_LRU_RESIZE_SUPPORT
         if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
@@ -250,7 +219,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
         /* force vfs to use lustre handler for flock() calls - bug 10743 */
         sb->s_flags |= MS_FLOCK_LOCK;
 #endif
-        
+
         if (sbi->ll_flags & LL_SBI_FLOCK)
                 sbi->ll_fop = &ll_file_operations_flock;
         else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
@@ -260,15 +229,10 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
 
         /* real client */
         data->ocd_connect_flags |= OBD_CONNECT_REAL;
-        if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
-                data->ocd_connect_flags &= ~OBD_CONNECT_LCL_CLIENT;
-                data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT;
-        } else {
-                data->ocd_connect_flags &= ~OBD_CONNECT_RMT_CLIENT;
-                data->ocd_connect_flags |= OBD_CONNECT_LCL_CLIENT;
-        }
+        if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
+                data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
 
-        err = obd_connect(NULL, &md_conn, obd, &sbi->ll_sb_uuid, data, NULL);
+        err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
         if (err == -EBUSY) {
                 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
                                    "recovery, of which this client is not a "
@@ -279,7 +243,6 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                 CERROR("cannot connect to %s: rc = %d\n", md, err);
                 GOTO(out, err);
         }
-        sbi->ll_md_exp = class_conn2export(&md_conn);
 
         err = obd_fid_init(sbi->ll_md_exp);
         if (err) {
@@ -288,13 +251,13 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                 GOTO(out_md, err);
         }
 
-        err = obd_statfs(obd, &osfs, cfs_time_current_64() - HZ, 0);
+        err = obd_statfs(obd, &osfs, cfs_time_current_64() - CFS_HZ, 0);
         if (err)
                 GOTO(out_md_fid, err);
 
         size = sizeof(*data);
         err = obd_get_info(sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
-                           KEY_CONN_DATA,  &size, data);
+                           KEY_CONN_DATA,  &size, data, NULL);
         if (err) {
                 CERROR("Get connect data failed: %d \n", err);
                 GOTO(out_md, err);
@@ -312,7 +275,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
          *
          * it will check if *ppos is greater than max. However, max equals to
          * s_maxbytes, which is a negative integer in a x86_64 box since loff_t
-         * has been defined as a signed long long ineger in linux kernel. */
+         * has been defined as a signed long long integer in linux kernel. */
 #if BITS_PER_LONG == 64
         sb->s_maxbytes = PAGE_CACHE_MAXBYTES >> 1;
 #else
@@ -341,24 +304,16 @@ 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_JOIN)
-                sbi->ll_flags |= LL_SBI_JOIN;
-
-        if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
-                if (!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT)) {
-                        /* sometimes local client claims to be remote, but mdt
-                         * will disagree when client gss not applied. */
-                        LCONSOLE_INFO("client claims to be remote, but server "
-                                      "rejected, forced to be local.\n");
-                        sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
+        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 (!(data->ocd_connect_flags & OBD_CONNECT_LCL_CLIENT)) {
-                        /* with gss applied, remote client can not claim to be
-                         * local, so mdt maybe force client to be remote. */
-                        LCONSOLE_INFO("client claims to be local, but server "
-                                      "rejected, forced to be remote.\n");
-                        sbi->ll_flags |= LL_SBI_RMT_CLIENT;
+                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");
                 }
         }
 
@@ -372,19 +327,6 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                 sbi->ll_flags |= LL_SBI_OSS_CAPA;
         }
 
-        sbi->ll_sdev_orig = sb->s_dev;
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
-        /* 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. */
-
-        /* XXX: this will not work with LMV */
-        sb->s_dev = get_uuid2int(sbi2mdc(sbi)->cl_target_uuid.uuid,
-                                 strlen(sbi2mdc(sbi)->cl_target_uuid.uuid));
-#endif
-
         obd = class_name2obd(dt);
         if (!obd) {
                 CERROR("DT %s: not setup or attached\n", dt);
@@ -395,9 +337,9 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                                   OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
                                   OBD_CONNECT_CANCELSET | OBD_CONNECT_FID      |
                                   OBD_CONNECT_SRVLOCK   | OBD_CONNECT_TRUNCLOCK|
-                                  OBD_CONNECT_AT;
-        if (sbi->ll_flags & LL_SBI_OSS_CAPA)
-                data->ocd_connect_flags |= OBD_CONNECT_OSS_CAPA;
+                                  OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
+                                  OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
+                                  OBD_CONNECT_SOM;
 
         if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
                 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
@@ -416,15 +358,18 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
 #ifdef HAVE_LRU_RESIZE_SUPPORT
         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;
+
         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 = ll_ocd_update;
+        obd->obd_upcall.onu_upcall = cl_ocd_update;
         data->ocd_brw_size = PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT;
 
-        err = obd_connect(NULL, &dt_conn, obd, &sbi->ll_sb_uuid, data, NULL);
+        err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data, NULL);
         if (err == -EBUSY) {
                 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
                                    "recovery, of which this client is not a "
@@ -436,65 +381,30 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                 GOTO(out_md_fid, err);
         }
 
-        sbi->ll_dt_exp = class_conn2export(&dt_conn);
-
         err = obd_fid_init(sbi->ll_dt_exp);
         if (err) {
                 CERROR("Can't init data layer FID infrastructure, "
                        "rc %d\n", err);
                 GOTO(out_dt, err);
         }
-        
-        spin_lock(&sbi->ll_lco.lco_lock);
-        sbi->ll_lco.lco_flags = data->ocd_connect_flags;
-        spin_unlock(&sbi->ll_lco.lco_lock);
-
-        err = obd_register_page_removal_cb(sbi->ll_dt_exp,
-                                           ll_page_removal_cb, 
-                                           ll_pin_extent_cb);
-        if (err) {
-                CERROR("cannot register page removal callback: rc = %d\n",err);
-                GOTO(out_dt, err);
-        }
-        err = obd_register_lock_cancel_cb(sbi->ll_dt_exp,
-                                          ll_extent_lock_cancel_cb);
-        if (err) {
-                CERROR("cannot register lock cancel callback: rc = %d\n", err);
-                GOTO(out_page_rm_cb, err);
-        }
-
-        err = ll_init_ea_size(sbi->ll_md_exp, sbi->ll_dt_exp);;
-        if (err) {
-                CERROR("cannot set max EA and cookie sizes: rc = %d\n", err);
-                GOTO(out_lock_cn_cb, err);
-        }
-
-        err = obd_prep_async_page(sbi->ll_dt_exp, NULL, NULL, NULL,
-                                  0, NULL, NULL, NULL, 0, NULL);
-        if (err < 0) {
-                LCONSOLE_ERROR_MSG(0x151, "There are no OST's in this "
-                                   "filesystem. There must be at least one "
-                                   "active OST for a client to start.\n");
-                GOTO(out_lock_cn_cb, err);
-        }
 
-        if (!ll_async_page_slab) {
-                ll_async_page_slab_size =
-                        size_round(sizeof(struct ll_async_page)) + err;
-                ll_async_page_slab = cfs_mem_cache_create("ll_async_page",
-                                                          ll_async_page_slab_size,
-                                                          0, 0);
-                if (!ll_async_page_slab)
-                        GOTO(out_lock_cn_cb, err = -ENOMEM);
-        }
+        cfs_mutex_down(&sbi->ll_lco.lco_lock);
+        sbi->ll_lco.lco_flags = data->ocd_connect_flags;
+        sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
+        sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
+        cfs_mutex_up(&sbi->ll_lco.lco_lock);
 
-        err = md_getstatus(sbi->ll_md_exp, &rootfid, &oc);
+        fid_zero(&sbi->ll_root_fid);
+        err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
         if (err) {
                 CERROR("cannot mds_connect: rc = %d\n", err);
                 GOTO(out_lock_cn_cb, err);
         }
-        CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&rootfid));
-        sbi->ll_root_fid = rootfid;
+        if (!fid_is_sane(&sbi->ll_root_fid)) {
+                CERROR("Invalid root fid during mount\n");
+                GOTO(out_lock_cn_cb, err = -EINVAL);
+        }
+        CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
 
         sb->s_op = &lustre_super_operations;
         sb->s_export_op = &lustre_export_operations;
@@ -507,9 +417,19 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
         else if (sbi->ll_flags & LL_SBI_ACL)
                 valid |= OBD_MD_FLACL;
 
-        err = md_getattr(sbi->ll_md_exp, &rootfid, oc, valid, 0, &request);
+        OBD_ALLOC_PTR(op_data);
+        if (op_data == NULL) 
+                GOTO(out_lock_cn_cb, err = -ENOMEM);
+
+        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)
-                free_capa(oc);
+                capa_put(oc);
+        OBD_FREE_PTR(op_data);
         if (err) {
                 CERROR("md_getattr failed for root: rc = %d\n", err);
                 GOTO(out_lock_cn_cb, err);
@@ -524,11 +444,11 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
         }
 
         LASSERT(fid_is_sane(&sbi->ll_root_fid));
-        root = ll_iget(sb, ll_fid_build_ino(sbi, &sbi->ll_root_fid), &lmd);
+        root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid), &lmd);
         md_free_lustre_md(sbi->ll_md_exp, &lmd);
         ptlrpc_req_finished(request);
 
-        if (root == NULL || is_bad_inode(root)) {
+        if (root == NULL || IS_ERR(root)) {
                 if (lmd.lsm)
                         obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
 #ifdef CONFIG_FS_POSIX_ACL
@@ -537,8 +457,10 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
                         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 = -EBADF);
+                GOTO(out_root, err);
         }
 
         err = ll_close_thread_start(&sbi->ll_lcq);
@@ -558,21 +480,30 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
         err = obd_set_info_async(sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
                                  KEY_CHECKSUM, sizeof(checksum), &checksum,
                                  NULL);
+        cl_sb_init(sb);
 
         sb->s_root = d_alloc_root(root);
         if (data != NULL)
                 OBD_FREE(data, sizeof(*data));
+
         sb->s_root->d_op = &ll_d_root_ops;
+
+        sbi->ll_sdev_orig = sb->s_dev;
+
+        /* 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));
+
         RETURN(err);
 out_root:
         if (root)
                 iput(root);
 out_lock_cn_cb:
-        obd_unregister_lock_cancel_cb(sbi->ll_dt_exp,
-                                      ll_extent_lock_cancel_cb);
-out_page_rm_cb:
-        obd_unregister_page_removal_cb(sbi->ll_dt_exp,
-                                       ll_page_removal_cb);
         obd_fid_fini(sbi->ll_dt_exp);
 out_dt:
         obd_disconnect(sbi->ll_dt_exp);
@@ -596,7 +527,7 @@ int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
         *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
         size = sizeof(int);
         rc = obd_get_info(sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
-                          KEY_MAX_EASIZE, &size, lmmsize);
+                          KEY_MAX_EASIZE, &size, lmmsize, NULL);
         if (rc)
                 CERROR("Get max mdsize error rc %d \n", rc);
 
@@ -640,109 +571,12 @@ void lustre_dump_dentry(struct dentry *dentry, int recur)
         if (recur == 0)
                 return;
 
-        list_for_each(tmp, &dentry->d_subdirs) {
+       list_for_each(tmp, &dentry->d_subdirs) {
                 struct dentry *d = list_entry(tmp, struct dentry, d_child);
                 lustre_dump_dentry(d, recur - 1);
         }
 }
 
-#ifdef HAVE_EXPORT___IGET
-static void prune_dir_dentries(struct inode *inode)
-{
-        struct dentry *dentry, *prev = NULL;
-
-        /* due to lustre specific logic, a directory
-         * can have few dentries - a bug from VFS POV */
-restart:
-        spin_lock(&dcache_lock);
-        if (!list_empty(&inode->i_dentry)) {
-                dentry = list_entry(inode->i_dentry.prev,
-                                    struct dentry, d_alias);
-                /* in order to prevent infinite loops we
-                 * break if previous dentry is busy */
-                if (dentry != prev) {
-                        prev = dentry;
-                        dget_locked(dentry);
-                        spin_unlock(&dcache_lock);
-
-                        /* try to kill all child dentries */
-                        lock_dentry(dentry);
-                        shrink_dcache_parent(dentry);
-                        unlock_dentry(dentry);
-                        dput(dentry);
-
-                        /* now try to get rid of current dentry */
-                        d_prune_aliases(inode);
-                        goto restart;
-                }
-        }
-        spin_unlock(&dcache_lock);
-}
-
-static void prune_deathrow_one(struct ll_inode_info *lli)
-{
-        struct inode *inode = ll_info2i(lli);
-
-        /* first, try to drop any dentries - they hold a ref on the inode */
-        if (S_ISDIR(inode->i_mode))
-                prune_dir_dentries(inode);
-        else
-                d_prune_aliases(inode);
-
-
-        /* if somebody still uses it, leave it */
-        LASSERT(atomic_read(&inode->i_count) > 0);
-        if (atomic_read(&inode->i_count) > 1)
-                goto out;
-
-        CDEBUG(D_INODE, "inode %lu/%u(%d) looks a good candidate for prune\n",
-               inode->i_ino,inode->i_generation, atomic_read(&inode->i_count));
-
-        /* seems nobody uses it anymore */
-        inode->i_nlink = 0;
-
-out:
-        iput(inode);
-        return;
-}
-
-static void prune_deathrow(struct ll_sb_info *sbi, int try)
-{
-        struct ll_inode_info *lli;
-        int empty;
-
-        do {
-                if (need_resched() && try)
-                        break;
-
-                if (try) {
-                        if (!spin_trylock(&sbi->ll_deathrow_lock))
-                                break;
-                } else {
-                        spin_lock(&sbi->ll_deathrow_lock);
-                }
-
-                empty = 1;
-                lli = NULL;
-                if (!list_empty(&sbi->ll_deathrow)) {
-                        lli = list_entry(sbi->ll_deathrow.next,
-                                         struct ll_inode_info,
-                                         lli_dead_list);
-                        list_del_init(&lli->lli_dead_list);
-                        if (!list_empty(&sbi->ll_deathrow))
-                                empty = 0;
-                }
-                spin_unlock(&sbi->ll_deathrow_lock);
-
-                if (lli)
-                        prune_deathrow_one(lli);
-
-        } while (empty == 0);
-}
-#else /* !HAVE_EXPORT___IGET */
-#define prune_deathrow(sbi, try) do {} while (0)
-#endif /* HAVE_EXPORT___IGET */
-
 void client_common_put_super(struct super_block *sb)
 {
         struct ll_sb_info *sbi = ll_s2sbi(sb);
@@ -759,10 +593,9 @@ void client_common_put_super(struct super_block *sb)
 
         ll_close_thread_shutdown(sbi->ll_lcq);
 
-        /* destroy inodes in deathrow */
-        prune_deathrow(sbi, 0);
+        cl_sb_fini(sb);
 
-        list_del(&sbi->ll_conn_chain);
+        cfs_list_del(&sbi->ll_conn_chain);
 
         obd_fid_fini(sbi->ll_dt_exp);
         obd_disconnect(sbi->ll_dt_exp);
@@ -835,7 +668,7 @@ static int ll_options(char *options, int *flags)
         char *s1 = options, *s2;
         ENTRY;
 
-        if (!options) 
+        if (!options)
                 RETURN(0);
 
         CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
@@ -909,6 +742,16 @@ static int ll_options(char *options, int *flags)
                         *flags &= ~tmp;
                         goto next;
                 }
+                tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
+                if (tmp) {
+                        *flags |= tmp;
+                        goto next;
+                }
+                tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
+                if (tmp) {
+                        *flags &= ~tmp;
+                        goto next;
+                }
 
                 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
                                    s1);
@@ -927,24 +770,24 @@ next:
 void ll_lli_init(struct ll_inode_info *lli)
 {
         lli->lli_inode_magic = LLI_INODE_MAGIC;
-        sema_init(&lli->lli_size_sem, 1);
-        sema_init(&lli->lli_write_sem, 1);
+        cfs_sema_init(&lli->lli_size_sem, 1);
+        cfs_sema_init(&lli->lli_write_sem, 1);
+        cfs_sema_init(&lli->lli_trunc_sem, 1);
         lli->lli_flags = 0;
         lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
-        spin_lock_init(&lli->lli_lock);
-        INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
-        INIT_LIST_HEAD(&lli->lli_close_list);
+        cfs_spin_lock_init(&lli->lli_lock);
+        CFS_INIT_LIST_HEAD(&lli->lli_close_list);
         lli->lli_inode_magic = LLI_INODE_MAGIC;
-        sema_init(&lli->lli_och_sem, 1);
+        cfs_sema_init(&lli->lli_och_sem, 1);
         lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
         lli->lli_mds_exec_och = NULL;
         lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
         lli->lli_open_fd_exec_count = 0;
-        INIT_LIST_HEAD(&lli->lli_dead_list);
+        CFS_INIT_LIST_HEAD(&lli->lli_dead_list);
         lli->lli_remote_perms = NULL;
         lli->lli_rmtperm_utime = 0;
-        sema_init(&lli->lli_rmtperm_sem, 1);
-        INIT_LIST_HEAD(&lli->lli_oss_capas);
+        cfs_sema_init(&lli->lli_rmtperm_sem, 1);
+        CFS_INIT_LIST_HEAD(&lli->lli_oss_capas);
 }
 
 int ll_fill_super(struct super_block *sb)
@@ -966,12 +809,12 @@ int ll_fill_super(struct super_block *sb)
         /* client additional sb info */
         lsi->lsi_llsbi = sbi = ll_init_sbi();
         if (!sbi) {
-                cfs_module_put();
+                cfs_module_put(THIS_MODULE);
                 RETURN(-ENOMEM);
         }
 
         err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
-        if (err) 
+        if (err)
                 GOTO(out_free, err);
 
         /* Generate a string unique to this super, in case some joker tries
@@ -1018,15 +861,17 @@ out_free:
                 OBD_FREE(md, strlen(md) + 1);
         if (dt)
                 OBD_FREE(dt, strlen(dt) + 1);
-        if (err) 
+        if (err)
                 ll_put_super(sb);
         else
-                LCONSOLE_WARN("Client %s has started\n", profilenm);        
+                LCONSOLE_WARN("Client %s has started\n", profilenm);
 
         RETURN(err);
 } /* ll_fill_super */
 
 
+void lu_context_keys_dump(void);
+
 void ll_put_super(struct super_block *sb)
 {
         struct config_llog_instance cfg;
@@ -1045,14 +890,14 @@ void ll_put_super(struct super_block *sb)
         sprintf(ll_instance, "%p", sb);
         cfg.cfg_instance = ll_instance;
         lustre_end_log(sb, NULL, &cfg);
-        
+
         if (sbi->ll_md_exp) {
                 obd = class_exp2obd(sbi->ll_md_exp);
-                if (obd) 
+                if (obd)
                         force = obd->obd_force;
         }
-        
-        /* We need to set force before the lov_disconnect in 
+
+        /* We need to set force before the lov_disconnect in
            lustre_common_put_super, since l_d cleans up osc's as well. */
         if (force) {
                 next = 0;
@@ -1060,12 +905,13 @@ void ll_put_super(struct super_block *sb)
                                                      &next)) != NULL) {
                         obd->obd_force = force;
                 }
-        }                       
+        }
 
         if (sbi->ll_lcq) {
                 /* Only if client_common_fill_super succeeded */
                 client_common_put_super(sb);
         }
+
         next = 0;
         while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
                 class_manual_cleanup(obd);
@@ -1079,39 +925,15 @@ void ll_put_super(struct super_block *sb)
 
         lustre_common_put_super(sb);
 
+        cl_env_cache_purge(~0);
+
         LCONSOLE_WARN("client %s umount complete\n", ll_instance);
-        
-        cfs_module_put();
+
+        cfs_module_put(THIS_MODULE);
 
         EXIT;
 } /* client_put_super */
 
-#ifdef HAVE_REGISTER_CACHE
-#include <linux/cache_def.h>
-#ifdef HAVE_CACHE_RETURN_INT
-static int
-#else
-static void
-#endif
-ll_shrink_cache(int priority, unsigned int gfp_mask)
-{
-        struct ll_sb_info *sbi;
-        int count = 0;
-
-        list_for_each_entry(sbi, &ll_super_blocks, ll_list)
-                count += llap_shrink_cache(sbi, priority);
-
-#ifdef HAVE_CACHE_RETURN_INT
-        return count;
-#endif
-}
-
-struct cache_definition ll_cache_definition = {
-        .name = "llap_cache",
-        .shrink = ll_shrink_cache
-};
-#endif /* HAVE_REGISTER_CACHE */
-
 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
 {
         struct inode *inode = NULL;
@@ -1178,14 +1000,6 @@ void ll_clear_inode(struct inode *inode)
         if (lli->lli_mds_read_och)
                 ll_md_real_close(inode, FMODE_READ);
 
-        if (lli->lli_smd) {
-                obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
-                                  null_if_equal, inode);
-
-                obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
-                lli->lli_smd = NULL;
-        }
-
         if (lli->lli_symlink_name) {
                 OBD_FREE(lli->lli_symlink_name,
                          strlen(lli->lli_symlink_name) + 1);
@@ -1201,7 +1015,7 @@ void ll_clear_inode(struct inode *inode)
         }
 #ifdef CONFIG_FS_POSIX_ACL
         else if (lli->lli_posix_acl) {
-                LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
+                LASSERT(cfs_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;
@@ -1209,12 +1023,18 @@ void ll_clear_inode(struct inode *inode)
 #endif
         lli->lli_inode_magic = LLI_INODE_DEAD;
 
-#ifdef HAVE_EXPORT___IGET
-        spin_lock(&sbi->ll_deathrow_lock);
-        list_del_init(&lli->lli_dead_list);
-        spin_unlock(&sbi->ll_deathrow_lock);
-#endif
         ll_clear_inode_capas(inode);
+        /*
+         * XXX This has to be done before lsm is freed below, because
+         * cl_object still uses inode lsm.
+         */
+        cl_inode_fini(inode);
+
+        if (lli->lli_smd) {
+                obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
+                lli->lli_smd = NULL;
+        }
+
 
         EXIT;
 }
@@ -1227,13 +1047,13 @@ int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
         struct ptlrpc_request *request = NULL;
         int rc;
         ENTRY;
-        
-        op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0, 
+
+        op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
                                      LUSTRE_OPC_ANY, NULL);
         if (IS_ERR(op_data))
                 RETURN(PTR_ERR(op_data));
 
-        rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0, 
+        rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
                         &request, mod);
         if (rc) {
                 ptlrpc_req_finished(request);
@@ -1282,7 +1102,7 @@ static int ll_setattr_done_writing(struct inode *inode,
         struct ll_inode_info *lli = ll_i2info(inode);
         int rc = 0;
         ENTRY;
-        
+
         LASSERT(op_data != NULL);
         if (!S_ISREG(inode->i_mode))
                 RETURN(0);
@@ -1290,13 +1110,15 @@ static int ll_setattr_done_writing(struct inode *inode,
         CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
                op_data->op_ioepoch, PFID(&lli->lli_fid));
 
-        op_data->op_flags = MF_EPOCH_CLOSE | MF_SOM_CHANGE;
+        op_data->op_flags = MF_EPOCH_CLOSE;
+        ll_done_writing_attr(inode, op_data);
+        ll_pack_inode2opdata(inode, op_data, NULL);
+
         rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
         if (rc == -EAGAIN) {
                 /* MDS has instructed us to obtain Size-on-MDS attribute
                  * from OSTs and send setattr to back to MDS. */
-                rc = ll_sizeonmds_update(inode, mod, &op_data->op_handle,
-                                         op_data->op_ioepoch);
+                rc = ll_som_update(inode, op_data);
         } else if (rc) {
                 CERROR("inode %lu mdc truncate failed: rc = %d\n",
                        inode->i_ino, rc);
@@ -1304,86 +1126,24 @@ static int ll_setattr_done_writing(struct inode *inode,
         RETURN(rc);
 }
 
-static int ll_setattr_do_truncate(struct inode *inode, loff_t new_size)
+static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
 {
-        struct ll_sb_info *sbi = ll_i2sbi(inode);
-        struct ll_inode_info *lli = ll_i2info(inode);
-        struct lov_stripe_md *lsm = lli->lli_smd;
+        struct obd_capa *capa;
         int rc;
-        ldlm_policy_data_t policy = { .l_extent = {new_size,
-                                                   OBD_OBJECT_EOF } };
-        struct lustre_handle lockh = { 0 };
-        int local_lock = 0; /* 0 - no local lock;
-                             * 1 - lock taken by lock_extent;
-                             * 2 - by obd_match*/
-        int ast_flags;
-        int err;
-        ENTRY;
 
-        UNLOCK_INODE_MUTEX(inode);
-        UP_WRITE_I_ALLOC_SEM(inode);
-
-        if (sbi->ll_lockless_truncate_enable &&
-            (sbi->ll_lco.lco_flags & OBD_CONNECT_TRUNCLOCK)) {
-                ast_flags = LDLM_FL_BLOCK_GRANTED;
-                rc = obd_match(sbi->ll_dt_exp, lsm, LDLM_EXTENT,
-                               &policy, LCK_PW, &ast_flags, inode, &lockh);
-                if (rc > 0) {
-                        local_lock = 2;
-                        rc = 0;
-                } else if (rc == 0) {
-                        rc = ll_file_punch(inode, new_size, 1);
-                }
-        } else {
-                /* XXX when we fix the AST intents to pass the discard-range
-                 * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
-                 * XXX here. */
-                ast_flags = (new_size == 0) ? LDLM_AST_DISCARD_DATA : 0;
-                rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy,
-                                    &lockh, ast_flags);
-                if (likely(rc == 0))
-                        local_lock = 1;
-        }
+        if (attr->ia_valid & ATTR_SIZE)
+                capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
+        else
+                capa = ll_mdscapa_get(inode);
 
-        LOCK_INODE_MUTEX(inode);
-        DOWN_WRITE_I_ALLOC_SEM(inode);
-
-        if (likely(rc == 0)) {
-                /* Only ll_inode_size_lock is taken at this level.
-                 * lov_stripe_lock() is grabbed by ll_truncate() only over
-                 * call to obd_adjust_kms().  If vmtruncate returns 0, then
-                 * ll_truncate dropped ll_inode_size_lock() */
-                ll_inode_size_lock(inode, 0);
-                if (!local_lock) {
-                        spin_lock(&lli->lli_lock);
-                        lli->lli_flags |= LLIF_SRVLOCK;
-                        spin_unlock(&lli->lli_lock);
-                }
-                rc = vmtruncate(inode, new_size);
-                if (!local_lock) {
-                        spin_lock(&lli->lli_lock);
-                        lli->lli_flags &= ~LLIF_SRVLOCK;
-                        spin_unlock(&lli->lli_lock);
-                }
-                if (rc != 0) {
-                        LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
-                        ll_inode_size_unlock(inode, 0);
-                }
-        }
+        rc = cl_setattr_ost(inode, attr, capa);
 
-        if (local_lock) {
-                if (local_lock == 2)
-                        err = obd_cancel(sbi->ll_dt_exp, lsm, LCK_PW, &lockh);
-                else
-                        err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
-                if (unlikely(err != 0)){
-                        CERROR("extent unlock failed: err=%d,"
-                               " unlock method =%d\n", err, local_lock);
-                        if (rc == 0)
-                                rc = err;
-                }
-        }
-        RETURN(rc);
+        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
@@ -1403,7 +1163,6 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
 {
         struct ll_inode_info *lli = ll_i2info(inode);
         struct lov_stripe_md *lsm = lli->lli_smd;
-        struct ll_sb_info *sbi = ll_i2sbi(inode);
         struct md_op_data *op_data = NULL;
         struct md_open_data *mod = NULL;
         int ia_valid = attr->ia_valid;
@@ -1426,33 +1185,24 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
 
         /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
         if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
-                if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
+                if (cfs_curproc_fsuid() != inode->i_uid &&
+                    !cfs_capable(CFS_CAP_FOWNER))
                         RETURN(-EPERM);
         }
 
         /* We mark all of the fields "set" so MDS/OST does not re-set them */
         if (attr->ia_valid & ATTR_CTIME) {
-                attr->ia_ctime = CURRENT_TIME;
+                attr->ia_ctime = CFS_CURRENT_TIME;
                 attr->ia_valid |= ATTR_CTIME_SET;
         }
         if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
-                attr->ia_atime = CURRENT_TIME;
+                attr->ia_atime = CFS_CURRENT_TIME;
                 attr->ia_valid |= ATTR_ATIME_SET;
         }
         if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
-                attr->ia_mtime = CURRENT_TIME;
+                attr->ia_mtime = CFS_CURRENT_TIME;
                 attr->ia_valid |= ATTR_MTIME_SET;
         }
-        if ((attr->ia_valid & ATTR_CTIME) && !(attr->ia_valid & ATTR_MTIME)) {
-                /* To avoid stale mtime on mds, obtain it from ost and send 
-                   to mds. */
-                rc = ll_glimpse_size(inode, 0);
-                if (rc) 
-                        RETURN(rc);
-                
-                attr->ia_valid |= ATTR_MTIME_SET | ATTR_MTIME;
-                attr->ia_mtime = inode->i_mtime;
-        }
 
         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
                 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
@@ -1471,69 +1221,41 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
         if (op_data == NULL)
                 RETURN(-ENOMEM);
 
+        UNLOCK_INODE_MUTEX(inode);
+        if (ia_valid & ATTR_SIZE)
+                UP_WRITE_I_ALLOC_SEM(inode);
+        cfs_down(&lli->lli_trunc_sem);
+        LOCK_INODE_MUTEX(inode);
+        if (ia_valid & ATTR_SIZE)
+                DOWN_WRITE_I_ALLOC_SEM(inode);
+
         memcpy(&op_data->op_attr, attr, sizeof(*attr));
 
         /* Open epoch for truncate. */
-        if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
-            (ia_valid & ATTR_SIZE))
+        if (exp_connect_som(ll_i2mdexp(inode)) &&
+            (ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
                 op_data->op_flags = MF_EPOCH_OPEN;
 
         rc = ll_md_setattr(inode, op_data, &mod);
         if (rc)
                 GOTO(out, rc);
 
-        if (op_data->op_ioepoch)
-                CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID" for "
-                       "truncate\n", op_data->op_ioepoch, PFID(&lli->lli_fid));
-
+        ll_ioepoch_open(lli, op_data->op_ioepoch);
         if (!lsm || !S_ISREG(inode->i_mode)) {
                 CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
                 GOTO(out, rc = 0);
         }
 
-        /* We really need to get our PW lock before we change inode->i_size.
-         * If we don't we can race with other i_size updaters on our node, like
-         * ll_file_read.  We can also race with i_size propogation to other
-         * nodes through dirtying and writeback of final cached pages.  This
-         * last one is especially bad for racing o_append users on other
-         * nodes. */
-        if (ia_valid & ATTR_SIZE) {
-                rc = ll_setattr_do_truncate(inode, attr->ia_size);
-        } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
-                obd_flag flags;
-                struct obd_info oinfo = { { { 0 } } };
-                struct obdo *oa;
-
-                CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
-                       inode->i_ino, LTIME_S(attr->ia_mtime));
-
-                OBDO_ALLOC(oa);
-                if (oa) {
-                        oa->o_id = lsm->lsm_object_id;
-                        oa->o_gr = lsm->lsm_object_gr;
-                        oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
-
-                        flags = OBD_MD_FLTYPE | OBD_MD_FLATIME |
-                                OBD_MD_FLMTIME | OBD_MD_FLCTIME |
-                                OBD_MD_FLFID | OBD_MD_FLGENER | 
-                                OBD_MD_FLGROUP;
-
-                        obdo_from_inode(oa, inode, flags);
-
-                        oinfo.oi_oa = oa;
-                        oinfo.oi_md = lsm;
-                        oinfo.oi_capa = ll_mdscapa_get(inode);
-
-                        /* XXX: this looks unnecessary now. */
-                        rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
-                        capa_put(oinfo.oi_capa);
-                        if (rc)
-                                CERROR("obd_setattr_async fails: rc=%d\n", rc);
-                        OBDO_FREE(oa);
-                } else {
-                        rc = -ENOMEM;
-                }
-        }
+        if (ia_valid & ATTR_SIZE)
+                attr->ia_valid |= ATTR_SIZE;
+        if ((ia_valid & ATTR_SIZE) | 
+            ((ia_valid | ATTR_ATIME | ATTR_ATIME_SET) &&
+             LTIME_S(attr->ia_atime) < LTIME_S(attr->ia_ctime)) ||
+            ((ia_valid | ATTR_MTIME | ATTR_MTIME_SET) &&
+             LTIME_S(attr->ia_mtime) < LTIME_S(attr->ia_ctime)))
+                /* perform truncate and setting mtime/atime to past under PW
+                 * 0:EOF extent lock (new_size:EOF for truncate) */
+                rc = ll_setattr_ost(inode, attr);
         EXIT;
 out:
         if (op_data) {
@@ -1541,17 +1263,26 @@ out:
                         rc1 = ll_setattr_done_writing(inode, op_data, mod);
                 ll_finish_md_op_data(op_data);
         }
+        cfs_up(&lli->lli_trunc_sem);
         return rc ? rc : rc1;
 }
 
 int ll_setattr(struct dentry *de, struct iattr *attr)
 {
-        int mode;
-
         if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
             (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
                 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
 
+        if ((de->d_inode->i_mode & S_ISUID) &&
+            !(attr->ia_mode & S_ISUID) &&
+            !(attr->ia_valid & ATTR_KILL_SUID))
+                attr->ia_valid |= ATTR_KILL_SUID;
+
+        if (((de->d_inode->i_mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
+            !(attr->ia_mode & S_ISGID) &&
+            !(attr->ia_valid & ATTR_KILL_SGID))
+                attr->ia_valid |= ATTR_KILL_SGID;
+
         return ll_setattr_raw(de->d_inode, attr);
 }
 
@@ -1574,6 +1305,9 @@ int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
         CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
 
+        if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
+                flags |= OBD_STATFS_NODELAY;
+
         rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
                               &obd_osfs, max_age, flags);
         if (rc) {
@@ -1653,7 +1387,7 @@ void ll_inode_size_lock(struct inode *inode, int lock_lsm)
 
         lli = ll_i2info(inode);
         LASSERT(lli->lli_size_sem_owner != current);
-        down(&lli->lli_size_sem);
+        cfs_down(&lli->lli_size_sem);
         LASSERT(lli->lli_size_sem_owner == NULL);
         lli->lli_size_sem_owner = current;
         lsm = lli->lli_smd;
@@ -1676,24 +1410,7 @@ void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
                 lov_stripe_unlock(lsm);
         LASSERT(lli->lli_size_sem_owner == current);
         lli->lli_size_sem_owner = NULL;
-        up(&lli->lli_size_sem);
-}
-
-static void ll_replace_lsm(struct inode *inode, struct lov_stripe_md *lsm)
-{
-        struct ll_inode_info *lli = ll_i2info(inode);
-
-        dump_lsm(D_INODE, lsm);
-        dump_lsm(D_INODE, lli->lli_smd);
-        LASSERTF(lsm->lsm_magic == LOV_MAGIC_JOIN,
-                 "lsm must be joined lsm %p\n", lsm);
-        obd_free_memmd(ll_i2dtexp(inode), &lli->lli_smd);
-        CDEBUG(D_INODE, "replace lsm %p to lli_smd %p for inode %lu%u(%p)\n",
-               lsm, lli->lli_smd, inode->i_ino, inode->i_generation, inode);
-        lli->lli_smd = lsm;
-        lli->lli_maxbytes = lsm->lsm_maxbytes;
-        if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
-                lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
+        cfs_up(&lli->lli_size_sem);
 }
 
 void ll_update_inode(struct inode *inode, struct lustre_md *md)
@@ -1705,36 +1422,39 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
 
         LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
         if (lsm != NULL) {
+                cfs_down(&lli->lli_och_sem);
                 if (lli->lli_smd == NULL) {
-                        if (lsm->lsm_magic != LOV_MAGIC &&
-                            lsm->lsm_magic != LOV_MAGIC_JOIN) {
+                        if (lsm->lsm_magic != LOV_MAGIC_V1 &&
+                            lsm->lsm_magic != LOV_MAGIC_V3) {
                                 dump_lsm(D_ERROR, lsm);
                                 LBUG();
                         }
                         CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
                                lsm, inode->i_ino, inode->i_generation, inode);
-                        /* ll_inode_size_lock() requires it is only called
-                         * with lli_smd != NULL or lock_lsm == 0 or we can
-                         * race between lock/unlock.  bug 9547 */
+                        /* cl_inode_init must go before lli_smd or a race is
+                         * possible where client thinks the file has stripes,
+                         * but lov raid0 is not setup yet and parallel e.g.
+                         * glimpse would try to use uninitialized lov */
+                        cl_inode_init(inode, md);
                         lli->lli_smd = lsm;
+                        cfs_up(&lli->lli_och_sem);
                         lli->lli_maxbytes = lsm->lsm_maxbytes;
                         if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
                                 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
                 } else {
-                        if (lli->lli_smd->lsm_magic == lsm->lsm_magic &&
-                             lli->lli_smd->lsm_stripe_count ==
-                                        lsm->lsm_stripe_count) {
-                                if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
-                                        CERROR("lsm mismatch for inode %ld\n",
-                                                inode->i_ino);
-                                        CERROR("lli_smd:\n");
-                                        dump_lsm(D_ERROR, lli->lli_smd);
-                                        CERROR("lsm:\n");
-                                        dump_lsm(D_ERROR, lsm);
-                                        LBUG();
-                                }
-                        } else
-                                ll_replace_lsm(inode, lsm);
+                        cfs_up(&lli->lli_och_sem);
+                        LASSERT(lli->lli_smd->lsm_magic == lsm->lsm_magic &&
+                                lli->lli_smd->lsm_stripe_count ==
+                                lsm->lsm_stripe_count);
+                        if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
+                                CERROR("lsm mismatch for inode %ld\n",
+                                       inode->i_ino);
+                                CERROR("lli_smd:\n");
+                                dump_lsm(D_ERROR, lli->lli_smd);
+                                CERROR("lsm:\n");
+                                dump_lsm(D_ERROR, lsm);
+                                LBUG();
+                        }
                 }
                 if (lli->lli_smd != lsm)
                         obd_free_memmd(ll_i2dtexp(inode), &lsm);
@@ -1746,37 +1466,40 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
         }
 #ifdef CONFIG_FS_POSIX_ACL
         else if (body->valid & OBD_MD_FLACL) {
-                spin_lock(&lli->lli_lock);
+                cfs_spin_lock(&lli->lli_lock);
                 if (lli->lli_posix_acl)
                         posix_acl_release(lli->lli_posix_acl);
                 lli->lli_posix_acl = md->posix_acl;
-                spin_unlock(&lli->lli_lock);
+                cfs_spin_unlock(&lli->lli_lock);
         }
 #endif
-        inode->i_ino = ll_fid_build_ino(sbi, &body->fid1);
-
-        if (body->valid & OBD_MD_FLATIME &&
-            body->atime > LTIME_S(inode->i_atime))
-                LTIME_S(inode->i_atime) = body->atime;
-        
-        /* mtime is always updated with ctime, but can be set in past.
-           As write and utime(2) may happen within 1 second, and utime's
-           mtime has a priority over write's one, so take mtime from mds 
-           for the same ctimes. */
-        if (body->valid & OBD_MD_FLCTIME &&
-            body->ctime >= LTIME_S(inode->i_ctime)) {
-                LTIME_S(inode->i_ctime) = body->ctime;
-                if (body->valid & OBD_MD_FLMTIME) {
-                        CDEBUG(D_INODE, "setting ino %lu mtime "
-                               "from %lu to "LPU64"\n", inode->i_ino, 
+        inode->i_ino = cl_fid_build_ino(&body->fid1);
+        inode->i_generation = cl_fid_build_gen(&body->fid1);
+
+        if (body->valid & OBD_MD_FLATIME) {
+                if (body->atime > LTIME_S(inode->i_atime))
+                        LTIME_S(inode->i_atime) = body->atime;
+                lli->lli_lvb.lvb_atime = body->atime;
+        }
+        if (body->valid & OBD_MD_FLMTIME) {
+                if (body->mtime > LTIME_S(inode->i_mtime)) {
+                        CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
+                               "to "LPU64"\n", inode->i_ino,
                                LTIME_S(inode->i_mtime), body->mtime);
                         LTIME_S(inode->i_mtime) = body->mtime;
                 }
+                lli->lli_lvb.lvb_mtime = body->mtime;
+        }
+        if (body->valid & OBD_MD_FLCTIME) {
+                if (body->ctime > LTIME_S(inode->i_ctime))
+                        LTIME_S(inode->i_ctime) = body->ctime;
+                lli->lli_lvb.lvb_ctime = body->ctime;
         }
         if (body->valid & OBD_MD_FLMODE)
                 inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
         if (body->valid & OBD_MD_FLTYPE)
                 inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
+        LASSERT(inode->i_mode != 0);
         if (S_ISREG(inode->i_mode)) {
                 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
         } else {
@@ -1804,20 +1527,20 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
                                  " to the "DFID", inode %lu/%u(%p)\n",
                                  PFID(&lli->lli_fid), PFID(&body->fid1),
                                  inode->i_ino, inode->i_generation, inode);
-                } else 
+                } else
                         lli->lli_fid = body->fid1;
         }
 
         LASSERT(fid_seq(&lli->lli_fid) != 0);
 
         if (body->valid & OBD_MD_FLSIZE) {
-                if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
+                if (exp_connect_som(ll_i2mdexp(inode)) &&
                     S_ISREG(inode->i_mode) && lli->lli_smd) {
                         struct lustre_handle lockh;
                         ldlm_mode_t mode;
-                        
+
                         /* As it is possible a blocking ast has been processed
-                         * by this time, we need to check there is an UPDATE 
+                         * by this time, we need to check there is an UPDATE
                          * lock on the client and set LLIF_MDS_SIZE_LOCK holding
                          * it. */
                         mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
@@ -1944,14 +1667,19 @@ int ll_iocontrol(struct inode *inode, struct file *file,
         ENTRY;
 
         switch(cmd) {
-        case EXT3_IOC_GETFLAGS: {
+        case FSFILT_IOC_GETFLAGS: {
                 struct mdt_body *body;
-                struct obd_capa *oc;
+                struct md_op_data *op_data;
 
-                oc = ll_mdscapa_get(inode);
-                rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
-                                OBD_MD_FLFLAGS, 0, &req);
-                capa_put(oc);
+                op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
+                                             0, 0, LUSTRE_OPC_ANY,
+                                             NULL);
+                if (op_data == NULL)
+                        RETURN(-ENOMEM);
+
+                op_data->op_valid = OBD_MD_FLFLAGS;
+                rc = md_getattr(sbi->ll_md_exp, op_data, &req);
+                ll_finish_md_op_data(op_data);
                 if (rc) {
                         CERROR("failure %d inode %lu\n", rc, inode->i_ino);
                         RETURN(-abs(rc));
@@ -1965,7 +1693,7 @@ int ll_iocontrol(struct inode *inode, struct file *file,
 
                 RETURN(put_user(flags, (int *)arg));
         }
-        case EXT3_IOC_SETFLAGS: {
+        case FSFILT_IOC_SETFLAGS: {
                 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
                 struct obd_info oinfo = { { { 0 } } };
                 struct md_op_data *op_data;
@@ -1989,15 +1717,20 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                                 NULL, 0, NULL, 0, &req, NULL);
                 ll_finish_md_op_data(op_data);
                 ptlrpc_req_finished(req);
-                if (rc || lsm == NULL) {
+                if (rc) {
                         OBDO_FREE(oinfo.oi_oa);
                         RETURN(rc);
                 }
 
+                if (lsm == NULL) {
+                        OBDO_FREE(oinfo.oi_oa);
+                        GOTO(update_cache, rc);
+                }
+
                 oinfo.oi_oa->o_id = lsm->lsm_object_id;
                 oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
                 oinfo.oi_oa->o_flags = flags;
-                oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | 
+                oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
                                        OBD_MD_FLGROUP;
                 oinfo.oi_capa = ll_mdscapa_get(inode);
 
@@ -2008,13 +1741,14 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                 OBDO_FREE(oinfo.oi_oa);
                 if (rc) {
                         if (rc != -EPERM && rc != -EACCES)
-                                CERROR("md_setattr_async fails: rc = %d\n", rc);
+                                CERROR("osc_setattr_async fails: rc = %d\n",rc);
                         RETURN(rc);
                 }
 
-                inode->i_flags = ll_ext_to_inode_flags(flags |
-                                                       MDS_BFLAG_EXT_FLAGS);
-                RETURN(0);
+                EXIT;
+update_cache:
+                inode->i_flags = ll_ext_to_inode_flags(flags);
+                return 0;
         }
         default:
                 RETURN(-ENOSYS);
@@ -2027,7 +1761,7 @@ int ll_flush_ctx(struct inode *inode)
 {
         struct ll_sb_info  *sbi = ll_i2sbi(inode);
 
-        CDEBUG(D_SEC, "flush context for user %d\n", current->uid);
+        CDEBUG(D_SEC, "flush context for user %d\n", cfs_curproc_uid());
 
         obd_set_info_async(sbi->ll_md_exp,
                            sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
@@ -2050,7 +1784,7 @@ void ll_umount_begin(struct super_block *sb)
         struct lustre_sb_info *lsi = s2lsi(sb);
         struct ll_sb_info *sbi = ll_s2sbi(sb);
         struct obd_device *obd;
-        struct obd_ioctl_data ioc_data = { 0 };
+        struct obd_ioctl_data *ioc_data;
         ENTRY;
 
 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
@@ -2074,8 +1808,6 @@ void ll_umount_begin(struct super_block *sb)
                 return;
         }
         obd->obd_force = 1;
-        obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp, sizeof ioc_data,
-                      &ioc_data, NULL);
 
         obd = class_exp2obd(sbi->ll_dt_exp);
         if (obd == NULL) {
@@ -2084,16 +1816,35 @@ void ll_umount_begin(struct super_block *sb)
                 EXIT;
                 return;
         }
-
         obd->obd_force = 1;
-        obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp, sizeof ioc_data,
-                      &ioc_data, NULL);
+
+        OBD_ALLOC_PTR(ioc_data);
+        if (ioc_data) {
+                obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
+                              sizeof ioc_data, ioc_data, NULL);
+
+                obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
+                              sizeof ioc_data, ioc_data, NULL);
+
+                OBD_FREE_PTR(ioc_data);
+        }
+
 
         /* Really, we'd like to wait until there are no requests outstanding,
          * and then continue.  For now, we just invalidate the requests,
-         * schedule, and hope.
+         * schedule() and sleep one second if needed, and hope.
          */
-        schedule();
+        cfs_schedule();
+#ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
+        if (atomic_read(&vfsmnt->mnt_count) > 2) {
+                cfs_schedule_timeout_and_set_state(CFS_TASK_INTERRUPTIBLE,
+                                                   cfs_time_seconds(1));
+                if (atomic_read(&vfsmnt->mnt_count) > 2)
+                        LCONSOLE_WARN("Mount still busy with %d refs! You "
+                                      "may try to umount it a bit later\n",
+                                      atomic_read(&vfsmnt->mnt_count));
+        }
+#endif
 
         EXIT;
 }
@@ -2130,12 +1881,11 @@ int ll_prep_inode(struct inode **inode,
 {
         struct ll_sb_info *sbi = NULL;
         struct lustre_md md;
-        int rc = 0;
+        int rc;
         ENTRY;
 
         LASSERT(*inode || sb);
         sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
-        prune_deathrow(sbi, 1);
         memset(&md, 0, sizeof(struct lustre_md));
 
         rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
@@ -2154,8 +1904,8 @@ int ll_prep_inode(struct inode **inode,
                  */
                 LASSERT(fid_is_sane(&md.body->fid1));
 
-                *inode = ll_iget(sb, ll_fid_build_ino(sbi, &md.body->fid1), &md);
-                if (*inode == NULL || is_bad_inode(*inode)) {
+                *inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1), &md);
+                if (*inode == NULL || IS_ERR(*inode)) {
                         if (md.lsm)
                                 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
 #ifdef CONFIG_FS_POSIX_ACL
@@ -2164,46 +1914,18 @@ int ll_prep_inode(struct inode **inode,
                                 md.posix_acl = NULL;
                         }
 #endif
-                        rc = -ENOMEM;
+                        rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
+                        *inode = NULL;
                         CERROR("new_inode -fatal: rc %d\n", rc);
                         GOTO(out, rc);
                 }
         }
 
-        rc = obd_checkmd(sbi->ll_dt_exp, sbi->ll_md_exp,
-                         ll_i2info(*inode)->lli_smd);
 out:
         md_free_lustre_md(sbi->ll_md_exp, &md);
         RETURN(rc);
 }
 
-char *llap_origins[] = {
-        [LLAP_ORIGIN_UNKNOWN] = "--",
-        [LLAP_ORIGIN_READPAGE] = "rp",
-        [LLAP_ORIGIN_READAHEAD] = "ra",
-        [LLAP_ORIGIN_COMMIT_WRITE] = "cw",
-        [LLAP_ORIGIN_WRITEPAGE] = "wp",
-        [LLAP_ORIGIN_LOCKLESS_IO] = "ls"
-};
-
-struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi,
-                                             struct list_head *list)
-{
-        struct ll_async_page *llap;
-        struct list_head *pos;
-
-        list_for_each(pos, list) {
-                if (pos == &sbi->ll_pglist)
-                        return NULL;
-                llap = list_entry(pos, struct ll_async_page, llap_pglist_item);
-                if (llap->llap_page == NULL)
-                        continue;
-                return llap;
-        }
-        LBUG();
-        return NULL;
-}
-
 int ll_obd_statfs(struct inode *inode, void *arg)
 {
         struct ll_sb_info *sbi = NULL;
@@ -2225,12 +1947,18 @@ int ll_obd_statfs(struct inode *inode, void *arg)
             !data->ioc_pbuf1 || !data->ioc_pbuf2)
                 GOTO(out_statfs, rc = -EINVAL);
 
+        if (data->ioc_inllen1 != sizeof(__u32) ||
+            data->ioc_inllen2 != sizeof(__u32) ||
+            data->ioc_plen1 != sizeof(struct obd_statfs) ||
+            data->ioc_plen2 != sizeof(struct obd_uuid))
+                GOTO(out_statfs, rc = -EINVAL);
+
         memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
         if (type == LL_STATFS_MDC)
                 exp = sbi->ll_md_exp;
         else if (type == LL_STATFS_LOV)
                 exp = sbi->ll_dt_exp;
-        else 
+        else
                 GOTO(out_statfs, rc = -ENODEV);
 
         rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
@@ -2247,14 +1975,14 @@ int ll_process_config(struct lustre_cfg *lcfg)
         char *ptr;
         void *sb;
         struct lprocfs_static_vars lvars;
-        unsigned long x; 
+        unsigned long x;
         int rc = 0;
 
         lprocfs_llite_init_vars(&lvars);
 
         /* The instance name contains the sb: lustre-client-aacfe000 */
         ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
-        if (!ptr || !*(++ptr)) 
+        if (!ptr || !*(++ptr))
                 return -EINVAL;
         if (sscanf(ptr, "%lx", &x) != 1)
                 return -EINVAL;
@@ -2262,10 +1990,12 @@ int ll_process_config(struct lustre_cfg *lcfg)
         /* This better be a real Lustre superblock! */
         LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
 
-        /* Note we have not called client_common_fill_super yet, so 
+        /* Note we have not called client_common_fill_super yet, so
            proc fns must be able to handle that! */
         rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
                                       lcfg, sb);
+        if (rc > 0)
+                rc = 0;
         return(rc);
 }
 
@@ -2279,10 +2009,10 @@ struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
 
         if (namelen > ll_i2sbi(i1)->ll_namelen)
                 return ERR_PTR(-ENAMETOOLONG);
-        
+
         if (op_data == NULL)
                 OBD_ALLOC_PTR(op_data);
-        
+
         if (op_data == NULL)
                 return ERR_PTR(-ENOMEM);
 
@@ -2302,9 +2032,9 @@ struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
         op_data->op_namelen = namelen;
         op_data->op_mode = mode;
         op_data->op_mod_time = cfs_time_current_sec();
-        op_data->op_fsuid = current->fsuid;
-        op_data->op_fsgid = current->fsgid;
-        op_data->op_cap = current->cap_effective;
+        op_data->op_fsuid = cfs_curproc_fsuid();
+        op_data->op_fsgid = cfs_curproc_fsgid();
+        op_data->op_cap = cfs_curproc_cap_pack();
         op_data->op_bias = MDS_CHECK_SPLIT;
         op_data->op_opc = opc;
         op_data->op_mds = 0;
@@ -2319,3 +2049,31 @@ void ll_finish_md_op_data(struct md_op_data *op_data)
         capa_put(op_data->op_capa2);
         OBD_FREE_PTR(op_data);
 }
+
+int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
+{
+        struct ll_sb_info *sbi;
+
+        LASSERT((seq != NULL) && (vfs != NULL));
+        sbi = ll_s2sbi(vfs->mnt_sb);
+
+        if (sbi->ll_flags & LL_SBI_NOLCK)
+                seq_puts(seq, ",nolock");
+
+        if (sbi->ll_flags & LL_SBI_FLOCK)
+                seq_puts(seq, ",flock");
+
+        if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
+                seq_puts(seq, ",localflock");
+
+        if (sbi->ll_flags & LL_SBI_USER_XATTR)
+                seq_puts(seq, ",user_xattr");
+
+        if (sbi->ll_flags & LL_SBI_ACL)
+                seq_puts(seq, ",acl");
+
+        if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
+                seq_puts(seq, ",lazystatfs");
+
+        RETURN(0);
+}