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LU-190 opencreate without mode can crash llite
[fs/lustre-release.git] / lustre / llite / namei.c
index 17388df..f9f9bc7 100644 (file)
@@ -1,22 +1,37 @@
 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
  * vim:expandtab:shiftwidth=8:tabstop=8:
  *
- *  Copyright (c) 2002, 2003 Cluster File Systems, Inc.
+ * GPL HEADER START
  *
- *   This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
- *   Lustre is free software; you can redistribute it and/or
- *   modify it under the terms of version 2 of the GNU General Public
- *   License as published by the Free Software Foundation.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
  *
- *   Lustre is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
  *
- *   You should have received a copy of the GNU General Public License
- *   along with Lustre; if not, write to the Free Software
- *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
  */
 
 #include <linux/fs.h>
@@ -37,9 +52,6 @@
 #include <lustre_mdc.h>
 #include "llite_internal.h"
 
-/* methods */
-extern struct dentry_operations ll_d_ops;
-
 /*
  * Check if we have something mounted at the named dchild.
  * In such a case there would always be dentry present.
@@ -70,6 +82,39 @@ int ll_unlock(__u32 mode, struct lustre_handle *lockh)
         RETURN(0);
 }
 
+
+/* called from iget5_locked->find_inode() under inode_lock spinlock */
+static int ll_test_inode(struct inode *inode, void *opaque)
+{
+        struct ll_inode_info *lli = ll_i2info(inode);
+        struct lustre_md     *md = opaque;
+
+        if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
+                CERROR("MDS body missing FID\n");
+                return 0;
+        }
+
+        if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
+                return 0;
+
+        return 1;
+}
+
+static int ll_set_inode(struct inode *inode, void *opaque)
+{
+        struct ll_inode_info *lli = ll_i2info(inode);
+        struct mdt_body *body = ((struct lustre_md *)opaque)->body;
+
+        if (unlikely(!(body->valid & OBD_MD_FLID))) {
+                CERROR("MDS body missing FID\n");
+                return -EINVAL;
+        }
+
+        lli->lli_fid = body->fid1;
+        return 0;
+}
+
+
 /*
  * Get an inode by inode number (already instantiated by the intent lookup).
  * Returns inode or NULL
@@ -77,31 +122,39 @@ int ll_unlock(__u32 mode, struct lustre_handle *lockh)
 struct inode *ll_iget(struct super_block *sb, ino_t hash,
                       struct lustre_md *md)
 {
-        struct ll_inode_info *lli;
-        struct inode *inode;
+        struct inode         *inode;
+        ENTRY;
+
         LASSERT(hash != 0);
+        inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 
-        inode = iget_locked(sb, hash);
         if (inode) {
                 if (inode->i_state & I_NEW) {
-                        lli = ll_i2info(inode);
+                        int rc;
+
                         ll_read_inode2(inode, md);
-                        unlock_new_inode(inode);
-                } else {
-                        if (!(inode->i_state & (I_FREEING | I_CLEAR)))
+                        rc = cl_inode_init(inode, md);
+                        if (rc != 0) {
+                                md->lsm = NULL;
+                                make_bad_inode(inode);
+                                unlock_new_inode(inode);
+                                iput(inode);
+                                inode = ERR_PTR(rc);
+                        } else
+                                unlock_new_inode(inode);
+                } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
                                 ll_update_inode(inode, md);
-                }
-                CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n",
-                       inode->i_ino, inode->i_generation, inode);
+                CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
+                       inode, PFID(&md->body->fid1));
         }
-
-        return inode;
+        RETURN(inode);
 }
 
 static void ll_drop_negative_dentry(struct inode *dir)
-{ 
+{
         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 
+        cfs_spin_lock(&ll_lookup_lock);
         spin_lock(&dcache_lock);
 restart:
         list_for_each_entry_safe(dentry, tmp_alias,
@@ -122,6 +175,7 @@ restart:
                 }
         }
         spin_unlock(&dcache_lock);
+        cfs_spin_unlock(&ll_lookup_lock);
 }
 
 
@@ -143,22 +197,25 @@ int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
                 break;
         case LDLM_CB_CANCELING: {
                 struct inode *inode = ll_inode_from_lock(lock);
+                struct ll_inode_info *lli;
                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
                 struct lu_fid *fid;
+                ldlm_mode_t mode = lock->l_req_mode;
 
                 /* Invalidate all dentries associated with this inode */
                 if (inode == NULL)
                         break;
 
                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
+                /* For OPEN locks we differentiate between lock modes - CR, CW. PR - bug 22891 */
                 if ((bits & MDS_INODELOCK_LOOKUP) &&
-                    ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
+                    ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP, LCK_MINMODE))
                         bits &= ~MDS_INODELOCK_LOOKUP;
                 if ((bits & MDS_INODELOCK_UPDATE) &&
-                    ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
+                    ll_have_md_lock(inode, MDS_INODELOCK_UPDATE, LCK_MINMODE))
                         bits &= ~MDS_INODELOCK_UPDATE;
                 if ((bits & MDS_INODELOCK_OPEN) &&
-                    ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
+                    ll_have_md_lock(inode, MDS_INODELOCK_OPEN, mode))
                         bits &= ~MDS_INODELOCK_OPEN;
 
                 fid = ll_inode2fid(inode);
@@ -189,8 +246,9 @@ int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
                         ll_md_real_close(inode, flags);
                 }
 
+                lli = ll_i2info(inode);
                 if (bits & MDS_INODELOCK_UPDATE)
-                        ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
+                        lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 
                 if (S_ISDIR(inode->i_mode) &&
                      (bits & MDS_INODELOCK_UPDATE)) {
@@ -216,7 +274,7 @@ int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 
 __u32 ll_i2suppgid(struct inode *i)
 {
-        if (in_group_p(i->i_gid))
+        if (cfs_curproc_is_in_groups(i->i_gid))
                 return (__u32)i->i_gid;
         else
                 return (__u32)(-1);
@@ -281,7 +339,7 @@ static void ll_d_add(struct dentry *de, struct inode *inode)
                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
                 LBUG();
         }
-        __d_rehash(de, 0);
+        d_rehash_cond(de, 0);
 }
 
 /* Search "inode"'s alias list for a dentry that has the same name and parent
@@ -290,12 +348,13 @@ static void ll_d_add(struct dentry *de, struct inode *inode)
  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
  */
-struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
+static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 {
         struct list_head *tmp;
         struct dentry *dentry;
         struct dentry *last_discon = NULL;
+
+        cfs_spin_lock(&ll_lookup_lock);
         spin_lock(&dcache_lock);
         list_for_each(tmp, &inode->i_dentry) {
                 dentry = list_entry(tmp, struct dentry, d_alias);
@@ -328,12 +387,11 @@ struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
                 dget_locked(dentry);
                 lock_dentry(dentry);
                 __d_drop(dentry);
-#ifdef DCACHE_LUSTRE_INVALID
-                dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
-#endif
                 unlock_dentry(dentry);
-                __d_rehash(dentry, 0); /* avoid taking dcache_lock inside */
+                ll_dops_init(dentry, 0);
+                d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
                 spin_unlock(&dcache_lock);
+                cfs_spin_unlock(&ll_lookup_lock);
                 iput(inode);
                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
                        "refc %d\n", de->d_name.len, de->d_name.name, de,
@@ -346,23 +404,30 @@ struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
                         "refc %d\n", last_discon, last_discon->d_inode,
                         atomic_read(&last_discon->d_count));
                 dget_locked(last_discon);
+                lock_dentry(last_discon);
+                last_discon->d_flags |= DCACHE_LUSTRE_INVALID;
+                unlock_dentry(last_discon);
                 spin_unlock(&dcache_lock);
+                cfs_spin_unlock(&ll_lookup_lock);
+                ll_dops_init(last_discon, 1);
                 d_rehash(de);
                 d_move(last_discon, de);
                 iput(inode);
                 return last_discon;
         }
-
+        lock_dentry(de);
+        de->d_flags |= DCACHE_LUSTRE_INVALID;
+        unlock_dentry(de);
         ll_d_add(de, inode);
 
         spin_unlock(&dcache_lock);
+        cfs_spin_unlock(&ll_lookup_lock);
 
         return de;
 }
 
-static int lookup_it_finish(struct ptlrpc_request *request,
-                            struct lookup_intent *it,
-                            void *data)
+int ll_lookup_it_finish(struct ptlrpc_request *request,
+                        struct lookup_intent *it, void *data)
 {
         struct it_cb_data *icbd = data;
         struct dentry **de = icbd->icbd_childp;
@@ -370,11 +435,13 @@ static int lookup_it_finish(struct ptlrpc_request *request,
         struct ll_sb_info *sbi = ll_i2sbi(parent);
         struct inode *inode = NULL;
         int rc;
+        ENTRY;
 
         /* NB 1 request reference will be taken away by ll_intent_lock()
          * when I return */
         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
-                ENTRY;
+                struct dentry *save = *de;
+                __u32 bits;
 
                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
                 if (rc)
@@ -383,7 +450,7 @@ static int lookup_it_finish(struct ptlrpc_request *request,
                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
                        inode, inode->i_ino, inode->i_generation);
                 md_set_lock_data(sbi->ll_md_exp,
-                                 &it->d.lustre.it_lock_handle, inode);
+                                 &it->d.lustre.it_lock_handle, inode, &bits);
 
                 /* We used to query real size from OSTs here, but actually
                    this is not needed. For stat() calls size would be updated
@@ -391,20 +458,39 @@ static int lookup_it_finish(struct ptlrpc_request *request,
                    2.4 and
                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
                    Everybody else who needs correct file size would call
-                   ll_glimpse_size or some equivalent themselves anyway.
+                   cl_glimpse_size or some equivalent themselves anyway.
                    Also see bug 7198. */
-
+                ll_dops_init(*de, 1);
                 *de = ll_find_alias(inode, *de);
+                if (*de != save) {
+                        struct ll_dentry_data *lld = ll_d2d(*de);
+
+                        /* just make sure the ll_dentry_data is ready */
+                        if (unlikely(lld == NULL))
+                                ll_dops_init(*de, 1);
+                }
+                /* we have lookup look - unhide dentry */
+                if (bits & MDS_INODELOCK_LOOKUP) {
+                        lock_dentry(*de);
+                        (*de)->d_flags &= ~DCACHE_LUSTRE_INVALID;
+                        unlock_dentry(*de);
+                }
         } else {
-                ENTRY;
+                ll_dops_init(*de, 1);
                 /* Check that parent has UPDATE lock. If there is none, we
                    cannot afford to hash this dentry (done by ll_d_add) as it
                    might get picked up later when UPDATE lock will appear */
-                if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
+                if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE, LCK_MINMODE)) {
                         spin_lock(&dcache_lock);
-                        ll_d_add(*de, inode);
+                        ll_d_add(*de, NULL);
                         spin_unlock(&dcache_lock);
                 } else {
+                        /* negative lookup - and don't have update lock to
+                         * parent */
+                        lock_dentry(*de);
+                        (*de)->d_flags |= DCACHE_LUSTRE_INVALID;
+                        unlock_dentry(*de);
+
                         (*de)->d_inode = NULL;
                         /* We do not want to hash the dentry if don`t have a
                          * lock, but if this dentry is later used in d_move,
@@ -416,9 +502,6 @@ static int lookup_it_finish(struct ptlrpc_request *request,
                 }
         }
 
-        ll_set_dd(*de);
-        (*de)->d_op = &ll_d_ops;
-
         RETURN(0);
 }
 
@@ -431,7 +514,7 @@ static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
         struct md_op_data *op_data;
         struct it_cb_data icbd;
         __u32 opc;
-        int rc;
+        int rc, first = 0;
         ENTRY;
 
         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
@@ -450,11 +533,21 @@ static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
          * not valid, revalidate it here. */
         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
             (it->it_op & (IT_OPEN | IT_CREAT))) {
-                rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
+                rc = ll_inode_revalidate_it(parent->i_sb->s_root, it,
+                                            MDS_INODELOCK_LOOKUP);
                 if (rc)
                         RETURN(ERR_PTR(rc));
         }
 
+        if (it->it_op == IT_GETATTR) {
+                first = ll_statahead_enter(parent, &dentry, 1);
+                if (first >= 0) {
+                        ll_statahead_exit(parent, dentry, first);
+                        if (first == 1)
+                                RETURN(retval = dentry);
+                }
+        }
+
         icbd.icbd_childp = &dentry;
         icbd.icbd_parent = parent;
 
@@ -470,7 +563,7 @@ static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
         if (IS_ERR(op_data))
                 RETURN((void *)op_data);
 
-        it->it_create_mode &= ~current->fs->umask;
+        it->it_create_mode &= ~cfs_curproc_umask();
 
         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
                             lookup_flags, &req, ll_md_blocking_ast, 0);
@@ -478,12 +571,15 @@ static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
         if (rc < 0)
                 GOTO(out, retval = ERR_PTR(rc));
 
-        rc = lookup_it_finish(req, it, &icbd);
+        rc = ll_lookup_it_finish(req, it, &icbd);
         if (rc != 0) {
                 ll_intent_release(it);
                 GOTO(out, retval = ERR_PTR(rc));
         }
 
+        if (first == -EEXIST)
+                ll_statahead_mark(parent, dentry);
+
         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
             !S_ISREG(dentry->d_inode->i_mode) &&
             !S_ISDIR(dentry->d_inode->i_mode)) {
@@ -501,21 +597,6 @@ static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
         return retval;
 }
 
-#ifdef HAVE_VFS_INTENT_PATCHES
-static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
-                                   struct nameidata *nd)
-{
-        struct dentry *de;
-        ENTRY;
-
-        if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
-                de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
-        else
-                de = ll_lookup_it(parent, dentry, NULL, 0);
-
-        RETURN(de);
-}
-#else
 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
                                         int lookup_flags)
 {
@@ -529,7 +610,7 @@ struct lookup_intent *ll_convert_intent(struct open_intent *oit,
                 it->it_op = IT_OPEN;
                 if (lookup_flags & LOOKUP_CREATE)
                         it->it_op |= IT_CREAT;
-                it->it_create_mode = oit->create_mode;
+                it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
                 it->it_flags = oit->flags;
         } else {
                 it->it_op = IT_GETATTR;
@@ -562,11 +643,16 @@ static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
                         if (IS_ERR(nd->intent.open.file))
                                 RETURN((struct dentry *)nd->intent.open.file);
 #endif
-
                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
                         it = ll_d2d(dentry)->lld_it;
                         ll_d2d(dentry)->lld_it = NULL;
                 } else {
+                        if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
+                                /* We are sure this is new dentry, so we need to create
+                                   our private data and set the dentry ops */ 
+                                ll_dops_init(dentry, 1);
+                                RETURN(NULL);
+                        }
                         it = ll_convert_intent(&nd->intent.open, nd->flags);
                         if (IS_ERR(it))
                                 RETURN((struct dentry *)it);
@@ -586,19 +672,23 @@ static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
                                                        (struct ptlrpc_request *)
                                                           it->d.lustre.it_data);
                                 } else {
-                                        struct file *filp;
-                                        nd->intent.open.file->private_data = it;
-                                        filp =lookup_instantiate_filp(nd,dentry,
-                                                                      NULL);
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 /* 2.6.1[456] have a bug in open_namei() that forgets to check
  * nd->intent.open.file for error, so we need to return it as lookup's result
  * instead */
+                                        struct file *filp;
+                                        nd->intent.open.file->private_data = it;
+                                        filp =lookup_instantiate_filp(nd,dentry,
+                                                                      NULL);
                                         if (IS_ERR(filp)) {
                                                 if (de)
                                                         dput(de);
                                                 de = (struct dentry *) filp;
                                         }
+#else
+                                        nd->intent.open.file->private_data = it;
+                                        (void)lookup_instantiate_filp(nd,dentry,
+                                                                      NULL);
 #endif
 
                                 }
@@ -628,7 +718,6 @@ static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 
         RETURN(de);
 }
-#endif
 
 /* We depend on "mode" being set with the proper file type/umask by now */
 static struct inode *ll_create_node(struct inode *dir, const char *name,
@@ -659,7 +748,7 @@ static struct inode *ll_create_node(struct inode *dir, const char *name,
         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
                inode, inode->i_ino, inode->i_generation);
         md_set_lock_data(sbi->ll_md_exp,
-                         &it->d.lustre.it_lock_handle, inode);
+                         &it->d.lustre.it_lock_handle, inode, NULL);
         EXIT;
  out:
         ptlrpc_req_finished(request);
@@ -697,9 +786,8 @@ static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 
         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
                                NULL, 0, mode, 0, it);
-        if (IS_ERR(inode)) {
+        if (IS_ERR(inode))
                 RETURN(PTR_ERR(inode));
-        }
 
         d_instantiate(dentry, inode);
         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
@@ -707,7 +795,7 @@ static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
          * successful create. Hash it here. */
         spin_lock(&dcache_lock);
         if (d_unhashed(dentry))
-                __d_rehash(dentry, 0);
+                d_rehash_cond(dentry, 0);
         spin_unlock(&dcache_lock);
         RETURN(0);
 }
@@ -719,21 +807,15 @@ static void ll_update_times(struct ptlrpc_request *request,
                                                        &RMF_MDT_BODY);
 
         LASSERT(body);
-        /* 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_FLMTIME &&
+            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;
+        }
         if (body->valid & OBD_MD_FLCTIME &&
-            body->ctime >= LTIME_S(inode->i_ctime)) {
+            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,
-                               LTIME_S(inode->i_mtime), body->mtime);
-                        LTIME_S(inode->i_mtime) = body->mtime;
-                }
-        }
 }
 
 static int ll_new_node(struct inode *dir, struct qstr *name,
@@ -757,8 +839,8 @@ static int ll_new_node(struct inode *dir, struct qstr *name,
                 GOTO(err_exit, err = PTR_ERR(op_data));
 
         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
-                        current->fsuid, current->fsgid,
-                        current->cap_effective, rdev, &request);
+                        cfs_curproc_fsuid(), cfs_curproc_fsgid(),
+                        cfs_curproc_cap_pack(), rdev, &request);
         ll_finish_md_op_data(op_data);
         if (err)
                 GOTO(err_exit, err);
@@ -772,8 +854,8 @@ static int ll_new_node(struct inode *dir, struct qstr *name,
 
                 d_drop(dchild);
                 d_instantiate(dchild, inode);
-                EXIT;
         }
+        EXIT;
 err_exit:
         ptlrpc_req_finished(request);
 
@@ -790,7 +872,7 @@ static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
                name->len, name->name, dir->i_ino, dir->i_generation, dir,
                mode, rdev);
 
-        mode &= ~current->fs->umask;
+        mode &= ~cfs_curproc_umask();
 
         switch (mode & S_IFMT) {
         case 0:
@@ -812,7 +894,6 @@ static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
         RETURN(err);
 }
 
-#ifndef HAVE_VFS_INTENT_PATCHES
 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
                         int mode, struct nameidata *nd)
 {
@@ -846,17 +927,6 @@ out:
 
         return rc;
 }
-#else
-static int ll_create_nd(struct inode *dir, struct dentry *dentry,
-                        int mode, struct nameidata *nd)
-{
-        if (!nd || !nd->intent.d.lustre.it_disposition)
-                /* No saved request? Just mknod the file */
-                return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
-
-        return ll_create_it(dir, dentry, mode, &nd->intent);
-}
-#endif
 
 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
                               const char *tgt, struct dentry *dchild)
@@ -916,7 +986,7 @@ static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 
-        mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
+        mode = (mode & (S_IRWXUGO|S_ISVTX) & ~cfs_curproc_umask()) | S_IFDIR;
         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
 
         RETURN(err);
@@ -928,7 +998,7 @@ static void ll_get_child_fid(struct inode * dir, struct qstr *name,
                              struct lu_fid *fid)
 {
         struct dentry *parent, *child;
-        
+
         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
         child = d_lookup(parent, name);
         if (child) {
@@ -945,7 +1015,7 @@ static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
         struct md_op_data *op_data;
         int rc;
         ENTRY;
-        
+
         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 
@@ -973,6 +1043,7 @@ int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
         struct lov_stripe_md *lsm = NULL;
         struct obd_trans_info oti = { 0 };
         struct obdo *oa;
+        struct obd_capa *oc = NULL;
         int rc;
         ENTRY;
 
@@ -1001,22 +1072,18 @@ int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
         }
         LASSERT(rc >= sizeof(*lsm));
 
-        rc = obd_checkmd(ll_i2dtexp(dir), ll_i2mdexp(dir), lsm);
-        if (rc)
-                GOTO(out_free_memmd, rc);
-
         OBDO_ALLOC(oa);
         if (oa == NULL)
                 GOTO(out_free_memmd, rc = -ENOMEM);
 
         oa->o_id = lsm->lsm_object_id;
-        oa->o_gr = lsm->lsm_object_gr;
+        oa->o_seq = lsm->lsm_object_seq;
         oa->o_mode = body->mode & S_IFMT;
         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
 
         if (body->valid & OBD_MD_FLCOOKIE) {
                 oa->o_valid |= OBD_MD_FLCOOKIE;
-                oti.oti_logcookies = 
+                oti.oti_logcookies =
                         req_capsule_server_sized_get(&request->rq_pill,
                                                      &RMF_LOGCOOKIES,
                                                    sizeof(struct llog_cookie) *
@@ -1027,7 +1094,14 @@ int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
                 }
         }
 
-        rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir));
+        if (body->valid & OBD_MD_FLOSSCAPA) {
+                rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
+                if (rc)
+                        GOTO(out_free_memmd, rc);
+        }
+
+        rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir), oc);
+        capa_put(oc);
         OBDO_FREE(oa);
         if (rc)
                 CERROR("obd destroy objid "LPX64" error %d\n",
@@ -1038,6 +1112,10 @@ int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
         return rc;
 }
 
+/* ll_unlink_generic() doesn't update the inode with the new link count.
+ * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
+ * is any lock existing. They will recycle dentries and inodes based upon locks
+ * too. b=20433 */
 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
                              struct dentry *dchild, struct qstr *name)
 {
@@ -1115,43 +1193,6 @@ static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
         RETURN(err);
 }
 
-#ifdef HAVE_VFS_INTENT_PATCHES
-static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
-{
-        return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
-}
-static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
-{
-        return ll_rename_generic(srcnd->dentry->d_inode, srcnd->dentry,
-                                 NULL, &srcnd->last,
-                                 tgtnd->dentry->d_inode, tgtnd->dentry,
-                                 NULL, &tgtnd->last);
-}
-static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
-{
-        return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
-                               &tgtnd->last, NULL);
-}
-static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
-{
-        return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
-}
-static int ll_rmdir_raw(struct nameidata *nd)
-{
-        return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, NULL,
-                                &nd->last);
-}
-static int ll_mkdir_raw(struct nameidata *nd, int mode)
-{
-        return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
-}
-static int ll_unlink_raw(struct nameidata *nd)
-{
-        return ll_unlink_generic(nd->dentry->d_inode, nd->dentry, NULL,
-                                 &nd->last);
-}
-#endif
-
 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
                     ll_dev_t rdev)
 {
@@ -1185,24 +1226,21 @@ static int ll_link(struct dentry *old_dentry, struct inode *dir,
 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
                      struct inode *new_dir, struct dentry *new_dentry)
 {
-        return ll_rename_generic(old_dir, NULL,
+        int err;
+        err = ll_rename_generic(old_dir, NULL,
                                  old_dentry, &old_dentry->d_name,
                                  new_dir, NULL, new_dentry,
                                  &new_dentry->d_name);
+        if (!err) {
+#ifndef HAVE_FS_RENAME_DOES_D_MOVE
+                if (!S_ISDIR(old_dentry->d_inode->i_mode))
+#endif
+                        d_move(old_dentry, new_dentry);
+        }
+        return err;
 }
 
 struct inode_operations ll_dir_inode_operations = {
-#ifdef HAVE_VFS_INTENT_PATCHES
-        .link_raw           = ll_link_raw,
-        .unlink_raw         = ll_unlink_raw,
-        .symlink_raw        = ll_symlink_raw,
-        .mkdir_raw          = ll_mkdir_raw,
-        .rmdir_raw          = ll_rmdir_raw,
-        .mknod_raw          = ll_mknod_raw,
-        .rename_raw         = ll_rename_raw,
-        .setattr            = ll_setattr,
-        .setattr_raw        = ll_setattr_raw,
-#endif
         .mknod              = ll_mknod,
         .lookup             = ll_lookup_nd,
         .create             = ll_create_nd,
@@ -1223,9 +1261,6 @@ struct inode_operations ll_dir_inode_operations = {
 };
 
 struct inode_operations ll_special_inode_operations = {
-#ifdef HAVE_VFS_INTENT_PATCHES
-        .setattr_raw    = ll_setattr_raw,
-#endif
         .setattr        = ll_setattr,
         .getattr        = ll_getattr,
         .permission     = ll_inode_permission,