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LU-658 liblustre: free sbi too early
[fs/lustre-release.git] / lustre / liblustre / super.c
index 0b2088d..3f3788a 100644 (file)
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2013, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
 # include <sys/statfs.h>
 #endif
 
-#include <sysio.h>
-#ifdef HAVE_XTIO_H
-#include <xtio.h>
-#endif
-#include <fs.h>
-#include <mount.h>
-#include <inode.h>
-#ifdef HAVE_FILE_H
-#include <file.h>
-#endif
-
-#undef LIST_HEAD
-
 #include "llite_lib.h"
 
 #ifndef MAY_EXEC
@@ -82,10 +69,10 @@ static int ll_permission(struct inode *inode, int mask)
         struct intnl_stat *st = llu_i2stat(inode);
         mode_t mode = st->st_mode;
 
-        if (current->fsuid == st->st_uid)
-                mode >>= 6;
-        else if (in_group_p(st->st_gid))
-                mode >>= 3;
+       if (current->fsuid == st->st_uid)
+               mode >>= 6;
+       else if (in_group_p(st->st_gid))
+               mode >>= 3;
 
         if ((mode & mask & (MAY_READ|MAY_WRITE|MAY_EXEC)) == mask)
                 return 0;
@@ -111,7 +98,7 @@ static void llu_fsop_gone(struct filesys *fs)
         int next = 0;
         ENTRY;
 
-        list_del(&sbi->ll_conn_chain);
+        cfs_list_del(&sbi->ll_conn_chain);
         cl_sb_fini(sbi);
         obd_disconnect(sbi->ll_dt_exp);
         obd_disconnect(sbi->ll_md_exp);
@@ -133,7 +120,7 @@ static ldlm_mode_t llu_take_md_lock(struct inode *inode, __u64 bits,
         ldlm_policy_data_t policy = { .l_inodebits = {bits}};
         struct lu_fid *fid;
         ldlm_mode_t rc;
-        int flags;
+       __u64 flags;
         ENTRY;
 
         fid = &llu_i2info(inode)->lli_fid;
@@ -160,39 +147,33 @@ void llu_update_inode(struct inode *inode, struct lustre_md *md)
                 st->st_mode = (st->st_mode & ~S_IFMT)|(body->mode & S_IFMT);
 
         if (lsm != NULL) {
-                if (lli->lli_smd == NULL) {
-                        cl_inode_init(inode, md);
-                        lli->lli_smd = lsm;
-                        lli->lli_maxbytes = lsm->lsm_maxbytes;
-                        if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
-                                lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
-                } else {
-                        if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
-                                CERROR("lsm mismatch for inode %lld\n",
-                                       (long long)st->st_ino);
-                                LBUG();
-                        }
-                }
-        }
-
-        if (body->valid & OBD_MD_FLMTIME &&
-            body->mtime > LTIME_S(st->st_mtime))
-                LTIME_S(st->st_mtime) = body->mtime;
-        if (body->valid & OBD_MD_FLATIME &&
-            body->atime > LTIME_S(st->st_atime))
-                LTIME_S(st->st_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(st->st_ctime)) {
-                LTIME_S(st->st_ctime) = body->ctime;
-                if (body->valid & OBD_MD_FLMTIME)
+               if (!lli->lli_has_smd) {
+                       cl_file_inode_init(inode, md);
+                       lli->lli_has_smd = true;
+                       lli->lli_maxbytes = lsm->lsm_maxbytes;
+                       if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
+                               lli->lli_maxbytes = MAX_LFS_FILESIZE;
+               }
+               if (md->lsm != NULL)
+                       obd_free_memmd(llu_i2obdexp(inode), &md->lsm);
+        }
+
+        if (body->valid & OBD_MD_FLATIME) {
+                if (body->atime > LTIME_S(st->st_atime))
+                        LTIME_S(st->st_atime) = body->atime;
+                lli->lli_lvb.lvb_atime = body->atime;
+        }
+        if (body->valid & OBD_MD_FLMTIME) {
+                if (body->mtime > LTIME_S(st->st_mtime))
                         LTIME_S(st->st_mtime) = body->mtime;
+                lli->lli_lvb.lvb_mtime = body->mtime;
+        }
+        if (body->valid & OBD_MD_FLCTIME) {
+                if (body->ctime > LTIME_S(st->st_ctime))
+                        LTIME_S(st->st_ctime) = body->ctime;
+                lli->lli_lvb.lvb_ctime = body->ctime;
         }
-       if (S_ISREG(st->st_mode))
+        if (S_ISREG(st->st_mode))
                 st->st_blksize = min(2UL * PTLRPC_MAX_BRW_SIZE, LL_MAX_BLKSIZE);
         else
                 st->st_blksize = 4096;
@@ -208,7 +189,7 @@ void llu_update_inode(struct inode *inode, struct lustre_md *md)
                 lli->lli_st_flags = body->flags;
         if (body->valid & OBD_MD_FLSIZE) {
                 if ((llu_i2sbi(inode)->ll_lco.lco_flags & OBD_CONNECT_SOM) &&
-                    S_ISREG(st->st_mode) && lli->lli_smd) {
+                   S_ISREG(st->st_mode) && lli->lli_has_smd) {
                         struct lustre_handle lockh;
                         ldlm_mode_t mode;
 
@@ -239,9 +220,13 @@ void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid)
 
         valid &= src->o_valid;
 
+       LASSERTF(!(valid & (OBD_MD_FLTYPE | OBD_MD_FLGENER | OBD_MD_FLFID |
+                           OBD_MD_FLID | OBD_MD_FLGROUP)),
+                "object "DOSTID", valid %x\n", POSTID(&src->o_oi), valid);
+
         if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
                 CDEBUG(D_INODE,"valid "LPX64", cur time "CFS_TIME_T"/"CFS_TIME_T
-                      ", new %lu/%lu\n",
+                       ", new %lu/%lu\n",
                        src->o_valid,
                        LTIME_S(st->st_mtime), LTIME_S(st->st_ctime),
                        (long)src->o_mtime, (long)src->o_ctime);
@@ -270,99 +255,37 @@ void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid)
                 lli->lli_st_flags = src->o_flags;
 }
 
-#define S_IRWXUGO       (S_IRWXU|S_IRWXG|S_IRWXO)
-#define S_IALLUGO       (S_ISUID|S_ISGID|S_ISVTX|S_IRWXUGO)
-
-void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid)
-{
-        struct llu_inode_info *lli = llu_i2info(src);
-        struct intnl_stat *st = llu_i2stat(src);
-        obd_flag newvalid = 0;
-
-        if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
-                CDEBUG(D_INODE, "valid %x, new time "CFS_TIME_T"/"CFS_TIME_T"\n",
-                       valid, LTIME_S(st->st_mtime),
-                       LTIME_S(st->st_ctime));
-
-        if (valid & OBD_MD_FLATIME) {
-                dst->o_atime = LTIME_S(st->st_atime);
-                newvalid |= OBD_MD_FLATIME;
-        }
-        if (valid & OBD_MD_FLMTIME) {
-                dst->o_mtime = LTIME_S(st->st_mtime);
-                newvalid |= OBD_MD_FLMTIME;
-        }
-        if (valid & OBD_MD_FLCTIME) {
-                dst->o_ctime = LTIME_S(st->st_ctime);
-                newvalid |= OBD_MD_FLCTIME;
-        }
-        if (valid & OBD_MD_FLSIZE) {
-                dst->o_size = st->st_size;
-                newvalid |= OBD_MD_FLSIZE;
-        }
-        if (valid & OBD_MD_FLBLOCKS) {  /* allocation of space (x512 bytes) */
-                dst->o_blocks = st->st_blocks;
-                newvalid |= OBD_MD_FLBLOCKS;
-        }
-        if (valid & OBD_MD_FLBLKSZ) {   /* optimal block size */
-                dst->o_blksize = st->st_blksize;
-                newvalid |= OBD_MD_FLBLKSZ;
-        }
-        if (valid & OBD_MD_FLTYPE) {
-                dst->o_mode = (dst->o_mode & S_IALLUGO)|(st->st_mode & S_IFMT);
-                newvalid |= OBD_MD_FLTYPE;
-        }
-        if (valid & OBD_MD_FLMODE) {
-                dst->o_mode = (dst->o_mode & S_IFMT)|(st->st_mode & S_IALLUGO);
-                newvalid |= OBD_MD_FLMODE;
-        }
-        if (valid & OBD_MD_FLUID) {
-                dst->o_uid = st->st_uid;
-                newvalid |= OBD_MD_FLUID;
-        }
-        if (valid & OBD_MD_FLGID) {
-                dst->o_gid = st->st_gid;
-                newvalid |= OBD_MD_FLGID;
-        }
-        if (valid & OBD_MD_FLFLAGS) {
-                dst->o_flags = lli->lli_st_flags;
-                newvalid |= OBD_MD_FLFLAGS;
-        }
-        if (valid & OBD_MD_FLGENER) {
-                dst->o_generation = lli->lli_st_generation;
-                newvalid |= OBD_MD_FLGENER;
-        }
-        if (valid & OBD_MD_FLFID) {
-                dst->o_fid = st->st_ino;
-                newvalid |= OBD_MD_FLFID;
-        }
-
-        dst->o_valid |= newvalid;
-}
-
-/*
- * really does the getattr on the inode and updates its fields
+/**
+ * Performs the getattr on the inode and updates its fields.
+ * If @sync != 0, perform the getattr under the server-side lock.
  */
-int llu_inode_getattr(struct inode *inode, struct obdo *obdo)
+int llu_inode_getattr(struct inode *inode, struct obdo *obdo,
+                      __u64 ioepoch, int sync)
 {
-        struct llu_inode_info *lli = llu_i2info(inode);
-        struct ptlrpc_request_set *set;
-        struct lov_stripe_md *lsm = lli->lli_smd;
-        struct obd_info oinfo = { { { 0 } } };
-        int rc;
-        ENTRY;
+       struct ptlrpc_request_set *set;
+       struct lov_stripe_md *lsm = NULL;
+       struct obd_info oinfo = { { { 0 } } };
+       int rc;
+       ENTRY;
 
+       lsm = ccc_inode_lsm_get(inode);
         LASSERT(lsm);
 
         oinfo.oi_md = lsm;
         oinfo.oi_oa = obdo;
-        oinfo.oi_oa->o_id = lsm->lsm_object_id;
-        oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
+       oinfo.oi_oa->o_oi = lsm->lsm_oi;
         oinfo.oi_oa->o_mode = S_IFREG;
+        oinfo.oi_oa->o_ioepoch = ioepoch;
         oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE |
                                OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
                                OBD_MD_FLBLKSZ | OBD_MD_FLMTIME |
-                               OBD_MD_FLCTIME | OBD_MD_FLGROUP;
+                               OBD_MD_FLCTIME | OBD_MD_FLGROUP |
+                               OBD_MD_FLATIME | OBD_MD_FLEPOCH;
+        obdo_set_parent_fid(oinfo.oi_oa, &llu_i2info(inode)->lli_fid);
+        if (sync) {
+                oinfo.oi_oa->o_valid |= OBD_MD_FLFLAGS;
+                oinfo.oi_oa->o_flags |= OBD_FL_SRVLOCK;
+        }
 
         set = ptlrpc_prep_set();
         if (set == NULL) {
@@ -374,6 +297,7 @@ int llu_inode_getattr(struct inode *inode, struct obdo *obdo)
                         rc = ptlrpc_set_wait(set);
                 ptlrpc_set_destroy(set);
         }
+       ccc_inode_lsm_put(inode, lsm);
         if (rc)
                 RETURN(rc);
 
@@ -381,13 +305,13 @@ int llu_inode_getattr(struct inode *inode, struct obdo *obdo)
                                OBD_MD_FLMTIME | OBD_MD_FLCTIME |
                                OBD_MD_FLSIZE;
 
-        obdo_refresh_inode(inode, oinfo.oi_oa, oinfo.oi_oa->o_valid);
-        CDEBUG(D_INODE, "objid "LPX64" size %Lu, blocks %Lu, "
-               "blksize %Lu\n", lli->lli_smd->lsm_object_id,
-               (long long unsigned)llu_i2stat(inode)->st_size,
-               (long long unsigned)llu_i2stat(inode)->st_blocks,
-               (long long unsigned)llu_i2stat(inode)->st_blksize);
-        RETURN(0);
+       obdo_refresh_inode(inode, oinfo.oi_oa, oinfo.oi_oa->o_valid);
+       CDEBUG(D_INODE, "objid "DOSTID" size %llu, blocks %llu, "
+              "blksize %llu\n", POSTID(&oinfo.oi_oa->o_oi),
+              (long long unsigned)llu_i2stat(inode)->st_size,
+              (long long unsigned)llu_i2stat(inode)->st_blocks,
+              (long long unsigned)llu_i2stat(inode)->st_blksize);
+       RETURN(0);
 }
 
 static struct inode* llu_new_inode(struct filesys *fs,
@@ -417,7 +341,7 @@ static struct inode* llu_new_inode(struct filesys *fs,
 
         /* initialize lli here */
         lli->lli_sbi = llu_fs2sbi(fs);
-        lli->lli_smd = NULL;
+       lli->lli_has_smd = false;
         lli->lli_symlink_name = NULL;
         lli->lli_flags = 0;
         lli->lli_maxbytes = (__u64)(~0UL);
@@ -442,7 +366,7 @@ static int llu_have_md_lock(struct inode *inode, __u64 lockpart)
         struct lustre_handle lockh;
         ldlm_policy_data_t policy = { .l_inodebits = { lockpart } };
         struct lu_fid *fid;
-        int flags;
+       __u64 flags;
         ENTRY;
 
         LASSERT(inode);
@@ -460,7 +384,8 @@ static int llu_have_md_lock(struct inode *inode, __u64 lockpart)
 
 static int llu_inode_revalidate(struct inode *inode)
 {
-        struct lov_stripe_md *lsm = NULL;
+        struct llu_inode_info *lli = llu_i2info(inode);
+        struct intnl_stat *st = llu_i2stat(inode);
         ENTRY;
 
         if (!inode) {
@@ -472,20 +397,25 @@ static int llu_inode_revalidate(struct inode *inode)
                 struct lustre_md md;
                 struct ptlrpc_request *req = NULL;
                 struct llu_sb_info *sbi = llu_i2sbi(inode);
+                struct md_op_data op_data = { { 0 } };
                 unsigned long valid = OBD_MD_FLGETATTR;
                 int rc, ealen = 0;
 
                 /* Why don't we update all valid MDS fields here, if we're
                  * doing an RPC anyways?  -phil */
-                if (S_ISREG(llu_i2stat(inode)->st_mode)) {
+                if (S_ISREG(st->st_mode)) {
                         ealen = obd_size_diskmd(sbi->ll_dt_exp, NULL);
                         valid |= OBD_MD_FLEASIZE;
                 }
-                rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode),
-                                NULL, valid, ealen, &req);
+
+                llu_prep_md_op_data(&op_data, inode, NULL, NULL, 0, ealen,
+                                    LUSTRE_OPC_ANY);
+                op_data.op_valid = valid;
+
+                rc = md_getattr(sbi->ll_md_exp, &op_data, &req);
                 if (rc) {
                         CERROR("failure %d inode %llu\n", rc,
-                               (long long)llu_i2stat(inode)->st_ino);
+                               (long long)st->st_ino);
                         RETURN(-abs(rc));
                 }
                 rc = md_get_lustre_md(sbi->ll_md_exp, req,
@@ -507,14 +437,18 @@ static int llu_inode_revalidate(struct inode *inode)
 
 
                 llu_update_inode(inode, &md);
-                if (md.lsm != NULL && llu_i2info(inode)->lli_smd != md.lsm)
-                        obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
-                ptlrpc_req_finished(req);
-        }
-
-        lsm = llu_i2info(inode)->lli_smd;
-        if (!lsm)       /* object not yet allocated, don't validate size */
+               if (md.lsm != NULL)
+                       obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
+               ptlrpc_req_finished(req);
+       }
+
+       if (!lli->lli_has_smd) {
+                /* object not yet allocated, don't validate size */
+                st->st_atime = lli->lli_lvb.lvb_atime;
+                st->st_mtime = lli->lli_lvb.lvb_mtime;
+                st->st_ctime = lli->lli_lvb.lvb_ctime;
                 RETURN(0);
+        }
 
         /* ll_glimpse_size will prefer locally cached writes if they extend
          * the file */
@@ -570,8 +504,9 @@ static int null_if_equal(struct ldlm_lock *lock, void *data)
 
 void llu_clear_inode(struct inode *inode)
 {
-        struct llu_inode_info *lli = llu_i2info(inode);
-        struct llu_sb_info *sbi = llu_i2sbi(inode);
+       struct llu_inode_info *lli = llu_i2info(inode);
+       struct llu_sb_info *sbi = llu_i2sbi(inode);
+       struct lov_stripe_md *lsm;
         ENTRY;
 
         CDEBUG(D_VFSTRACE, "VFS Op:inode=%llu/%lu(%p)\n",
@@ -579,19 +514,15 @@ void llu_clear_inode(struct inode *inode)
                inode);
 
         lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
-        md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
-                         null_if_equal, inode);
+       md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
 
-        if (lli->lli_smd)
-                obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
-                                  null_if_equal, inode);
+       lsm = ccc_inode_lsm_get(inode);
+       if (lsm != NULL)
+               obd_change_cbdata(sbi->ll_dt_exp, lsm, null_if_equal, inode);
+       ccc_inode_lsm_put(inode, lsm);
 
-        cl_inode_fini(inode);
-
-        if (lli->lli_smd) {
-                obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
-                lli->lli_smd = NULL;
-        }
+       cl_inode_fini(inode);
+       lli->lli_has_smd = false;
 
         if (lli->lli_symlink_name) {
                 OBD_FREE(lli->lli_symlink_name,
@@ -624,7 +555,7 @@ static int inode_setattr(struct inode * inode, struct iattr * attr)
          * inode_setattr() is only ever invoked with ATTR_SIZE (by
          * llu_setattr_raw()) when file has no bodies. Check this.
          */
-        LASSERT(ergo(ia_valid & ATTR_SIZE, llu_i2info(inode)->lli_smd == NULL));
+       LASSERT(ergo(ia_valid & ATTR_SIZE, !llu_i2info(inode)->lli_has_smd));
 
         if (ia_valid & ATTR_SIZE)
                 st->st_size = attr->ia_size;
@@ -638,11 +569,12 @@ static int inode_setattr(struct inode * inode, struct iattr * attr)
                 st->st_mtime = attr->ia_mtime;
         if (ia_valid & ATTR_CTIME)
                 st->st_ctime = attr->ia_ctime;
-        if (ia_valid & ATTR_MODE) {
-                st->st_mode = attr->ia_mode;
-                if (!in_group_p(st->st_gid) && !cfs_capable(CFS_CAP_FSETID))
-                        st->st_mode &= ~S_ISGID;
-        }
+       if (ia_valid & ATTR_MODE) {
+               st->st_mode = attr->ia_mode;
+               if (!in_group_p(st->st_gid) &&
+                   !cfs_capable(CFS_CAP_FSETID))
+                       st->st_mode &= ~S_ISGID;
+       }
         /* mark_inode_dirty(inode); */
         return error;
 }
@@ -704,13 +636,15 @@ static int llu_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;
+        llu_done_writing_attr(inode, op_data);
+        llu_pack_inode2opdata(inode, op_data, NULL);
+
         rc = md_done_writing(llu_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 = llu_sizeonmds_update(inode, &op_data->op_handle,
-                                          op_data->op_ioepoch);
+                rc = llu_som_update(inode, op_data);
         } else if (rc) {
                 CERROR("inode %llu mdc truncate failed: rc = %d\n",
                        (unsigned long long)st->st_ino, rc);
@@ -733,7 +667,7 @@ static int llu_setattr_done_writing(struct inode *inode,
  */
 int llu_setattr_raw(struct inode *inode, struct iattr *attr)
 {
-        struct lov_stripe_md *lsm = llu_i2info(inode)->lli_smd;
+       int has_lsm = llu_i2info(inode)->lli_has_smd;
         struct intnl_stat *st = llu_i2stat(inode);
         int ia_valid = attr->ia_valid;
         struct md_op_data op_data = { { 0 } };
@@ -756,47 +690,37 @@ int llu_setattr_raw(struct inode *inode, struct iattr *attr)
 
         /* 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 = cl_glimpse_size(inode);
-                if (rc)
-                        RETURN(rc);
-
-                attr->ia_valid |= ATTR_MTIME_SET | ATTR_MTIME;
-                attr->ia_mtime = inode->i_stbuf.st_mtime;
-        }
 
         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
                 CDEBUG(D_INODE, "setting mtime "CFS_TIME_T", ctime "CFS_TIME_T
                       ", now = "CFS_TIME_T"\n",
-                       LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
-                       LTIME_S(CURRENT_TIME));
-
-        /* NB: ATTR_SIZE will only be set after this point if the size
-         * resides on the MDS, ie, this file has no objects. */
-        if (lsm)
-                attr->ia_valid &= ~ATTR_SIZE;
-
-        /* If only OST attributes being set on objects, don't do MDS RPC.
-         * In that case, we need to check permissions and update the local
-         * inode ourselves so we can call obdo_from_inode() always. */
-        if (ia_valid & (lsm ? ~(ATTR_FROM_OPEN | ATTR_RAW) : ~0)) {
+                      LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
+                      LTIME_S(CFS_CURRENT_TIME));
+
+       /* NB: ATTR_SIZE will only be set after this point if the size
+        * resides on the MDS, ie, this file has no objects. */
+       if (has_lsm)
+               attr->ia_valid &= ~ATTR_SIZE;
+
+       /* If only OST attributes being set on objects, don't do MDS RPC.
+        * In that case, we need to check permissions and update the local
+        * inode ourselves so we can call obdo_from_inode() always. */
+       if (ia_valid & (has_lsm ? ~(ATTR_FROM_OPEN | ATTR_RAW) : ~0)) {
                 memcpy(&op_data.op_attr, attr, sizeof(*attr));
 
                 /* Open epoch for truncate. */
-                if ((llu_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
+                if (exp_connect_som(llu_i2mdexp(inode)) &&
                     (ia_valid & ATTR_SIZE))
                         op_data.op_flags = MF_EPOCH_OPEN;
                 rc = llu_md_setattr(inode, &op_data, &mod);
@@ -804,7 +728,7 @@ int llu_setattr_raw(struct inode *inode, struct iattr *attr)
                         RETURN(rc);
 
                 llu_ioepoch_open(llu_i2info(inode), op_data.op_ioepoch);
-                if (!lsm || !S_ISREG(st->st_mode)) {
+               if (!has_lsm || !S_ISREG(st->st_mode)) {
                         CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
                         GOTO(out, rc);
                 }
@@ -833,13 +757,18 @@ int llu_setattr_raw(struct inode *inode, struct iattr *attr)
                 inode_setattr(inode, attr);
         }
 
-        if (ia_valid & ATTR_SIZE) {
-                rc = cl_setattr_do_truncate(inode, attr->ia_size, NULL);
-        } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
-                CDEBUG(D_INODE, "set mtime on OST inode %llu to %lu\n",
-                       (long long unsigned)st->st_ino, LTIME_S(attr->ia_mtime));
-                rc = cl_setattr_ost(inode, NULL);
-        }
+        if (ia_valid & ATTR_SIZE)
+                attr->ia_valid |= ATTR_SIZE;
+        if (ia_valid & (ATTR_SIZE |
+                        ATTR_ATIME | ATTR_ATIME_SET |
+                        ATTR_MTIME | ATTR_MTIME_SET))
+                /* on truncate and utimes send attributes to osts, setting
+                 * mtime/atime to past will be performed under PW 0:EOF extent
+                 * lock (new_size:EOF for truncate)
+                 * it may seem excessive to send mtime/atime updates to osts
+                 * when not setting times to past, but it is necessary due to
+                 * possible time de-synchronization */
+                rc = cl_setattr_ost(inode, attr, NULL);
         EXIT;
 out:
         if (op_data.op_ioepoch)
@@ -892,7 +821,7 @@ static int llu_iop_setattr(struct pnode *pno,
         }
 
         iattr.ia_valid |= ATTR_RAW | ATTR_CTIME;
-        iattr.ia_ctime = CURRENT_TIME;
+        iattr.ia_ctime = CFS_CURRENT_TIME;
 
         rc = llu_setattr_raw(ino, &iattr);
         liblustre_wait_idle();
@@ -936,6 +865,7 @@ static int llu_readlink_internal(struct inode *inode,
         struct llu_sb_info *sbi = llu_i2sbi(inode);
         struct mdt_body *body;
         struct intnl_stat *st = llu_i2stat(inode);
+        struct md_op_data op_data = {{ 0 }};
         int rc, symlen = st->st_size + 1;
         ENTRY;
 
@@ -948,8 +878,11 @@ static int llu_readlink_internal(struct inode *inode,
                 RETURN(0);
         }
 
-        rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode), NULL,
-                        OBD_MD_LINKNAME, symlen, request);
+        llu_prep_md_op_data(&op_data, inode, NULL, NULL, 0, symlen,
+                            LUSTRE_OPC_ANY);
+        op_data.op_valid = OBD_MD_LINKNAME;
+
+        rc = md_getattr(sbi->ll_md_exp, &op_data, request);
         if (rc) {
                 CERROR("inode %llu: rc = %d\n", (long long)st->st_ino, rc);
                 RETURN(rc);
@@ -1154,7 +1087,7 @@ static int llu_statfs_internal(struct llu_sb_info *sbi,
         int rc;
         ENTRY;
 
-        rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, 0);
+        rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, 0);
         if (rc) {
                 CERROR("md_statfs fails: rc = %d\n", rc);
                 RETURN(rc);
@@ -1201,7 +1134,8 @@ static int llu_statfs(struct llu_sb_info *sbi, struct statfs *sfs)
         /* For now we will always get up-to-date statfs values, but in the
          * future we may allow some amount of caching on the client (e.g.
          * from QOS or lprocfs updates). */
-        rc = llu_statfs_internal(sbi, &osfs, cfs_time_current_64() - HZ);
+        rc = llu_statfs_internal(sbi, &osfs,
+                                 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS));
         if (rc)
                 return rc;
 
@@ -1326,20 +1260,23 @@ static int llu_file_flock(struct inode *ino,
                           int cmd,
                           struct file_lock *file_lock)
 {
-        struct llu_inode_info *lli = llu_i2info(ino);
-        struct intnl_stat *st = llu_i2stat(ino);
-        struct ldlm_res_id res_id =
-                { .name = {fid_seq(&lli->lli_fid),
-                           fid_oid(&lli->lli_fid),
-                           fid_ver(&lli->lli_fid),
-                           LDLM_FLOCK} };
-        struct ldlm_enqueue_info einfo = { LDLM_FLOCK, 0, NULL,
-                ldlm_flock_completion_ast, NULL, NULL, file_lock };
-
-        struct lustre_handle lockh = {0};
-        ldlm_policy_data_t flock;
-        int flags = 0;
-        int rc;
+       struct llu_inode_info *lli = llu_i2info(ino);
+       struct ldlm_res_id res_id =
+               { .name = {fid_seq(&lli->lli_fid),
+                          fid_oid(&lli->lli_fid),
+                          fid_ver(&lli->lli_fid),
+                          LDLM_FLOCK} };
+       struct ldlm_enqueue_info einfo = {
+               .ei_type        = LDLM_FLOCK,
+               .ei_mode        = 0,
+               .ei_cb_cp       = ldlm_flock_completion_ast,
+               .ei_cbdata      = file_lock,
+       };
+       struct intnl_stat     *st  = llu_i2stat(ino);
+       struct lustre_handle lockh = {0};
+       ldlm_policy_data_t flock;
+       __u64 flags = 0;
+       int rc;
 
         CDEBUG(D_VFSTRACE, "VFS Op:inode=%llu file_lock=%p\n",
                (unsigned long long)st->st_ino, file_lock);
@@ -1394,7 +1331,7 @@ static int llu_file_flock(struct inode *ino,
                 LBUG();
         }
 
-        CDEBUG(D_DLMTRACE, "inode=%llu, pid=%u, cmd=%d, flags=%#x, mode=%u, "
+       CDEBUG(D_DLMTRACE, "inode=%llu, pid=%u, cmd=%d, flags=%#llx, mode=%u, "
                "start="LPX64", end="LPX64"\n", (unsigned long long)st->st_ino,
                flock.l_flock.pid, cmd, flags, einfo.ei_mode, flock.l_flock.start,
                flock.l_flock.end);
@@ -1408,11 +1345,12 @@ static int llu_file_flock(struct inode *ino,
                 if (lmv->desc.ld_tgt_count < 1)
                         RETURN(rc = -ENODEV);
 
-                if (lmv->tgts[0].ltd_exp != NULL)
-                        rc = ldlm_cli_enqueue(lmv->tgts[0].ltd_exp, NULL, &einfo, &res_id,
-                                              &flock, &flags, NULL, 0, NULL, &lockh, 0);
-                else
-                        rc = -ENODEV;
+               if (lmv->tgts[0] != NULL && lmv->tgts[0]->ltd_exp != NULL)
+                       rc = ldlm_cli_enqueue(lmv->tgts[0]->ltd_exp, NULL,
+                                             &einfo, &res_id, &flock, &flags,
+                                             NULL, 0, LVB_T_NONE, &lockh, 0);
+               else
+                       rc = -ENODEV;
         }
         RETURN(rc);
 }
@@ -1662,7 +1600,7 @@ static int llu_lov_dir_setstripe(struct inode *ino, unsigned long arg)
         LASSERT(sizeof(lum) == sizeof(*lump));
         LASSERT(sizeof(lum.lmm_objects[0]) ==
                 sizeof(lump->lmm_objects[0]));
-        if (copy_from_user(&lum, lump, sizeof(lum)))
+       if (copy_from_user(&lum, lump, sizeof(lum)))
                 return(-EFAULT);
 
         switch (lum.lmm_magic) {
@@ -1700,25 +1638,29 @@ static int llu_lov_dir_setstripe(struct inode *ino, unsigned long arg)
 }
 
 static int llu_lov_setstripe_ea_info(struct inode *ino, int flags,
-                                     struct lov_user_md *lum, int lum_size)
+                                    struct lov_user_md *lum, int lum_size)
 {
-        struct llu_sb_info *sbi = llu_i2sbi(ino);
-        struct llu_inode_info *lli = llu_i2info(ino);
-        struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
-        struct ldlm_enqueue_info einfo = { LDLM_IBITS, LCK_CR,
-                llu_md_blocking_ast, ldlm_completion_ast, NULL, NULL, NULL };
-        struct ptlrpc_request *req = NULL;
-        struct lustre_md md;
-        struct md_op_data data = {{ 0 }};
-        struct lustre_handle lockh;
-        int rc = 0;
-        ENTRY;
-
-        if (lli->lli_smd) {
-                CDEBUG(D_IOCTL, "stripe already exists for ino "DFID"\n",
-                       PFID(&lli->lli_fid));
-                return -EEXIST;
-        }
+       struct llu_sb_info *sbi = llu_i2sbi(ino);
+       struct llu_inode_info *lli = llu_i2info(ino);
+       struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
+       struct ldlm_enqueue_info einfo = {
+               .ei_type        = LDLM_IBITS,
+               .ei_mode        = LCK_CR,
+               .ei_cb_bl       = llu_md_blocking_ast,
+               .ei_cb_cp       = ldlm_completion_ast,
+       };
+       struct ptlrpc_request *req = NULL;
+       struct lustre_md md;
+       struct md_op_data data = {{ 0 }};
+       struct lustre_handle lockh;
+       int rc = 0;
+       ENTRY;
+
+       if (lli->lli_has_smd) {
+               CDEBUG(D_IOCTL, "stripe already exists for ino "DFID"\n",
+                      PFID(&lli->lli_fid));
+               return -EEXIST;
+       }
 
         llu_prep_md_op_data(&data, NULL, ino, NULL, 0, O_RDWR,
                             LUSTRE_OPC_ANY);
@@ -1770,7 +1712,7 @@ static int llu_lov_file_setstripe(struct inode *ino, unsigned long arg)
 
         LASSERT(sizeof(lum) == sizeof(*lump));
         LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lump->lmm_objects[0]));
-        if (copy_from_user(&lum, lump, sizeof(lum)))
+       if (copy_from_user(&lum, lump, sizeof(lum)))
                 RETURN(-EFAULT);
 
         rc = llu_lov_setstripe_ea_info(ino, flags, &lum, sizeof(lum));
@@ -1790,13 +1732,15 @@ static int llu_lov_setstripe(struct inode *ino, unsigned long arg)
 
 static int llu_lov_getstripe(struct inode *ino, unsigned long arg)
 {
-        struct lov_stripe_md *lsm = llu_i2info(ino)->lli_smd;
-
-        if (!lsm)
-                RETURN(-ENODATA);
-
-        return obd_iocontrol(LL_IOC_LOV_GETSTRIPE, llu_i2obdexp(ino), 0, lsm,
-                            (void *)arg);
+       struct lov_stripe_md *lsm = NULL;
+       int rc = -ENODATA;
+
+       lsm = ccc_inode_lsm_get(ino);
+       if (lsm != NULL)
+               rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, llu_i2obdexp(ino), 0, lsm,
+                                  (void *)arg);
+       ccc_inode_lsm_put(ino, lsm);
+       return rc;
 }
 
 static int llu_iop_ioctl(struct inode *ino, unsigned long int request,
@@ -1907,12 +1851,14 @@ llu_fsswop_mount(const char *source,
         struct lustre_md md;
         class_uuid_t uuid;
         struct config_llog_instance cfg = {0, };
-        char ll_instance[sizeof(sbi) * 2 + 1];
         struct lustre_profile *lprof;
         char *zconf_mgsnid, *zconf_profile;
         char *osc = NULL, *mdc = NULL;
         int async = 1, err = -EINVAL;
         struct obd_connect_data ocd = {0,};
+        struct md_op_data op_data = {{0}};
+        /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
+        const int instlen = sizeof(cfg.cfg_instance) * 2 + 2;
 
         ENTRY;
 
@@ -1937,10 +1883,9 @@ llu_fsswop_mount(const char *source,
 
         /* generate a string unique to this super, let's try
          the address of the super itself.*/
-        sprintf(ll_instance, "%p", sbi);
+        cfg.cfg_instance = sbi;
 
         /* retrive & parse config log */
-        cfg.cfg_instance = ll_instance;
         cfg.cfg_uuid = sbi->ll_sb_uuid;
         err = liblustre_process_log(&cfg, zconf_mgsnid, zconf_profile, 1);
         if (err < 0) {
@@ -1953,11 +1898,11 @@ llu_fsswop_mount(const char *source,
                 CERROR("No profile found: %s\n", zconf_profile);
                 GOTO(out_free, err = -EINVAL);
         }
-        OBD_ALLOC(osc, strlen(lprof->lp_dt) + strlen(ll_instance) + 2);
-        sprintf(osc, "%s-%s", lprof->lp_dt, ll_instance);
+        OBD_ALLOC(osc, strlen(lprof->lp_dt) + instlen + 2);
+        sprintf(osc, "%s-%p", lprof->lp_dt, cfg.cfg_instance);
 
-        OBD_ALLOC(mdc, strlen(lprof->lp_md) + strlen(ll_instance) + 2);
-        sprintf(mdc, "%s-%s", lprof->lp_md, ll_instance);
+        OBD_ALLOC(mdc, strlen(lprof->lp_md) + instlen + 2);
+        sprintf(mdc, "%s-%p", lprof->lp_md, cfg.cfg_instance);
 
         if (!osc) {
                 CERROR("no osc\n");
@@ -1979,12 +1924,14 @@ llu_fsswop_mount(const char *source,
                 CERROR("MDC %s: not setup or attached\n", mdc);
                 GOTO(out_free, err = -EINVAL);
         }
-        obd_set_info_async(obd->obd_self_export, sizeof(KEY_ASYNC), KEY_ASYNC,
-                           sizeof(async), &async, NULL);
+        obd_set_info_async(NULL, obd->obd_self_export, sizeof(KEY_ASYNC),
+                           KEY_ASYNC, sizeof(async), &async, NULL);
 
         ocd.ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_VERSION |
                                 OBD_CONNECT_FID | OBD_CONNECT_AT |
-                                OBD_CONNECT_VBR | OBD_CONNECT_SOM;
+                               OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
+                               OBD_CONNECT_LVB_TYPE;
+
 #ifdef LIBLUSTRE_POSIX_ACL
         ocd.ocd_connect_flags |= OBD_CONNECT_ACL;
 #endif
@@ -1998,7 +1945,7 @@ llu_fsswop_mount(const char *source,
                 GOTO(out_free, err);
         }
 
-        err = obd_statfs(obd, &osfs, 100000000, 0);
+        err = obd_statfs(NULL, sbi->ll_md_exp, &osfs, 100000000, 0);
         if (err)
                 GOTO(out_md, err);
 
@@ -2012,8 +1959,8 @@ llu_fsswop_mount(const char *source,
                 CERROR("OSC %s: not setup or attached\n", osc);
                 GOTO(out_md, err = -EINVAL);
         }
-        obd_set_info_async(obd->obd_self_export, sizeof(KEY_ASYNC), KEY_ASYNC,
-                           sizeof(async), &async, NULL);
+        obd_set_info_async(NULL, obd->obd_self_export, sizeof(KEY_ASYNC),
+                           KEY_ASYNC, sizeof(async), &async, NULL);
 
         obd->obd_upcall.onu_owner = &sbi->ll_lco;
         obd->obd_upcall.onu_upcall = cl_ocd_update;
@@ -2021,7 +1968,8 @@ llu_fsswop_mount(const char *source,
         ocd.ocd_connect_flags = OBD_CONNECT_SRVLOCK | OBD_CONNECT_REQPORTAL |
                                 OBD_CONNECT_VERSION | OBD_CONNECT_TRUNCLOCK |
                                 OBD_CONNECT_FID | OBD_CONNECT_AT |
-                                OBD_CONNECT_SOM;
+                               OBD_CONNECT_FULL20 | OBD_CONNECT_EINPROGRESS |
+                               OBD_CONNECT_LVB_TYPE;
 
         ocd.ocd_version = LUSTRE_VERSION_CODE;
         err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, &ocd, NULL);
@@ -2045,9 +1993,10 @@ llu_fsswop_mount(const char *source,
         }
         CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
 
+        op_data.op_fid1 = sbi->ll_root_fid;
+        op_data.op_valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS;
         /* fetch attr of root inode */
-        err = md_getattr(sbi->ll_md_exp, &sbi->ll_root_fid, NULL,
-                         OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS, 0, &request);
+        err = md_getattr(sbi->ll_md_exp, &op_data, &request);
         if (err) {
                 CERROR("md_getattr failed for root: rc = %d\n", err);
                 GOTO(out_lock_cn_cb, err);
@@ -2088,9 +2037,8 @@ llu_fsswop_mount(const char *source,
         ptlrpc_req_finished(request);
 
         CDEBUG(D_SUPER, "LibLustre: %s mounted successfully!\n", source);
-        liblustre_wait_idle();
-
-        return 0;
+        err = 0;
+        goto out_free;
 
 out_inode:
         _sysio_i_gone(root);
@@ -2102,10 +2050,11 @@ out_md:
         obd_disconnect(sbi->ll_md_exp);
 out_free:
         if (osc)
-                OBD_FREE(osc, strlen(osc) + 1);
+                OBD_FREE(osc, strlen(lprof->lp_dt) + instlen + 2);
         if (mdc)
-                OBD_FREE(mdc, strlen(mdc) + 1);
-        OBD_FREE(sbi, sizeof(*sbi));
+                OBD_FREE(mdc, strlen(lprof->lp_md) + instlen + 2);
+        if (err != 0)
+                OBD_FREE(sbi, sizeof(*sbi));
         liblustre_wait_idle();
         return err;
 }