Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (41 commits)
  fs: add documentation on fallocate hole punching
  Gfs2: fail if we try to use hole punch
  Btrfs: fail if we try to use hole punch
  Ext4: fail if we try to use hole punch
  Ocfs2: handle hole punching via fallocate properly
  XFS: handle hole punching via fallocate properly
  fs: add hole punching to fallocate
  vfs: pass struct file to do_truncate on O_TRUNC opens (try #2)
  fix signedness mess in rw_verify_area() on 64bit architectures
  fs: fix kernel-doc for dcache::prepend_path
  fs: fix kernel-doc for dcache::d_validate
  sanitize ecryptfs ->mount()
  switch afs
  move internal-only parts of ncpfs headers to fs/ncpfs
  switch ncpfs
  switch 9p
  pass default dentry_operations to mount_pseudo()
  switch hostfs
  switch affs
  switch configfs
  ...

108 files changed, 424 insertions, 582 deletions

diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting
index 07a32b42cf9..266d2059b9b 100644
--- a/Documentation/filesystems/porting
+++ b/Documentation/filesystems/porting
@@ -385,3 +385,12 @@ Documentation/filesystems/vfs.txt for more details.
 on many or all directory inodes on the way down a path walk (to check for
 exec permission). These must now be rcu-walk aware (flags & IPERM_RCU). See
 Documentation/filesystems/vfs.txt for more details.
+ 
+--
+[mandatory]
+        In ->fallocate() you must check the mode option passed in.  If your
+filesystem does not support hole punching (deallocating space in the middle of a
+file) you must return -EOPNOTSUPP if FALLOC_FL_PUNCH_HOLE is set in mode.
+Currently you can only have FALLOC_FL_PUNCH_HOLE with FALLOC_FL_KEEP_SIZE set,
+so the i_size should not change when hole punching, even when puching the end of
+a file off.
diff --git a/Documentation/magic-number.txt b/Documentation/magic-number.txt
index 505f1960754..4b12abcb2ad 100644
--- a/Documentation/magic-number.txt
+++ b/Documentation/magic-number.txt
@@ -150,7 +150,7 @@ NBD_REPLY_MAGIC       0x96744668  nbd_reply         include/linux/nbd.h
 STL_BOARDMAGIC        0xa2267f52  stlbrd            include/linux/stallion.h
 ENI155_MAGIC          0xa54b872d  midway_eprom      drivers/atm/eni.h
 SCI_MAGIC             0xbabeface  gs_port           drivers/char/sh-sci.h
-CODA_MAGIC            0xC0DAC0DA  coda_file_info    include/linux/coda_fs_i.h
+CODA_MAGIC            0xC0DAC0DA  coda_file_info    fs/coda/coda_fs_i.h
 DPMEM_MAGIC           0xc0ffee11  gdt_pci_sram      drivers/scsi/gdth.h
 STLI_PORTMAGIC        0xe671c7a1  stliport          include/linux/istallion.h
 YAM_MAGIC             0xF10A7654  yam_port          drivers/net/hamradio/yam.c
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index d92d5b5161f..ac76da099a6 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -617,11 +617,14 @@ pfm_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len,
         return get_unmapped_area(file, addr, len, pgoff, flags);
 }
 
+/* forward declaration */
+static static const struct dentry_operations pfmfs_dentry_operations;
 
 static struct dentry *
 pfmfs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data)
 {
-        return mount_pseudo(fs_type, "pfm:", NULL, PFMFS_MAGIC);
+        return mount_pseudo(fs_type, "pfm:", NULL, &pfmfs_dentry_operations,
+                        PFMFS_MAGIC);
 }
 
 static struct file_system_type pfm_fs_type = {
@@ -2232,7 +2235,6 @@ pfm_alloc_file(pfm_context_t *ctx)
         }
         path.mnt = mntget(pfmfs_mnt);
 
-        d_set_d_op(path.dentry, &pfmfs_dentry_operations);
         d_add(path.dentry, inode);
 
         file = alloc_file(&path, FMODE_READ, &pfm_file_ops);
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index f511dd15fd3..ee4bb3330bd 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -1134,7 +1134,7 @@ static const struct file_operations mtd_fops = {
 static struct dentry *mtd_inodefs_mount(struct file_system_type *fs_type,
                                 int flags, const char *dev_name, void *data)
 {
-        return mount_pseudo(fs_type, "mtd_inode:", NULL, MTD_INODE_FS_MAGIC);
+        return mount_pseudo(fs_type, "mtd_inode:", NULL, NULL, MTD_INODE_FS_MAGIC);
 }
 
 static struct file_system_type mtd_inodefs_type = {
diff --git a/drivers/staging/pohmelfs/net.c b/drivers/staging/pohmelfs/net.c
index 9279897ff16..b2e91862208 100644
--- a/drivers/staging/pohmelfs/net.c
+++ b/drivers/staging/pohmelfs/net.c
@@ -413,7 +413,7 @@ static int pohmelfs_readdir_response(struct netfs_state *st)
                                 if (dentry) {
                                         alias = d_materialise_unique(dentry, &npi->vfs_inode);
                                         if (alias)
-                                                dput(dentry);
+                                                dput(alias);
                                 }
 
                                 dput(dentry);
diff --git a/drivers/staging/smbfs/dir.c b/drivers/staging/smbfs/dir.c
index dd612f50749..87a3a9bd584 100644
--- a/drivers/staging/smbfs/dir.c
+++ b/drivers/staging/smbfs/dir.c
@@ -403,12 +403,6 @@ smb_delete_dentry(const struct dentry *dentry)
 void
 smb_new_dentry(struct dentry *dentry)
 {
-        struct smb_sb_info *server = server_from_dentry(dentry);
-
-        if (server->mnt->flags & SMB_MOUNT_CASE)
-                d_set_d_op(dentry, &smbfs_dentry_operations_case);
-        else
-                d_set_d_op(dentry, &smbfs_dentry_operations);
         dentry->d_time = jiffies;
 }
 
@@ -440,7 +434,6 @@ smb_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
         struct smb_fattr finfo;
         struct inode *inode;
         int error;
-        struct smb_sb_info *server;
 
         error = -ENAMETOOLONG;
         if (dentry->d_name.len > SMB_MAXNAMELEN)
@@ -468,12 +461,6 @@ smb_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
                 inode = smb_iget(dir->i_sb, &finfo);
                 if (inode) {
         add_entry:
-                        server = server_from_dentry(dentry);
-                        if (server->mnt->flags & SMB_MOUNT_CASE)
-                                d_set_d_op(dentry, &smbfs_dentry_operations_case);
-                        else
-                                d_set_d_op(dentry, &smbfs_dentry_operations);
-
                         d_add(dentry, inode);
                         smb_renew_times(dentry);
                         error = 0;
diff --git a/drivers/staging/smbfs/inode.c b/drivers/staging/smbfs/inode.c
index 244319dc970..0778589d9e9 100644
--- a/drivers/staging/smbfs/inode.c
+++ b/drivers/staging/smbfs/inode.c
@@ -614,6 +614,10 @@ static int smb_fill_super(struct super_block *sb, void *raw_data, int silent)
                 printk(KERN_ERR "smbfs: failed to start smbiod\n");
                 goto out_no_smbiod;
         }
+        if (server->mnt->flags & SMB_MOUNT_CASE)
+                sb->s_d_op = &smbfs_dentry_operations_case;
+        else
+                sb->s_d_op = &smbfs_dentry_operations;
 
         /*
          * Keep the super block locked while we get the root inode.
diff --git a/drivers/staging/smbfs/proto.h b/drivers/staging/smbfs/proto.h
index 05939a6f43e..3883cb16a3f 100644
--- a/drivers/staging/smbfs/proto.h
+++ b/drivers/staging/smbfs/proto.h
@@ -38,6 +38,8 @@ extern void smb_install_null_ops(struct smb_ops *ops);
 extern const struct file_operations smb_dir_operations;
 extern const struct inode_operations smb_dir_inode_operations;
 extern const struct inode_operations smb_dir_inode_operations_unix;
+extern const struct dentry_operations smbfs_dentry_operations_case;
+extern const struct dentry_operations smbfs_dentry_operations;
 extern void smb_new_dentry(struct dentry *dentry);
 extern void smb_renew_times(struct dentry *dentry);
 /* cache.c */
diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h
index bab0eac873f..b789f8e597e 100644
--- a/fs/9p/v9fs_vfs.h
+++ b/fs/9p/v9fs_vfs.h
@@ -59,7 +59,6 @@ void v9fs_stat2inode_dotl(struct p9_stat_dotl *, struct inode *);
 int v9fs_dir_release(struct inode *inode, struct file *filp);
 int v9fs_file_open(struct inode *inode, struct file *file);
 void v9fs_inode2stat(struct inode *inode, struct p9_wstat *stat);
-void v9fs_dentry_release(struct dentry *);
 int v9fs_uflags2omode(int uflags, int extended);
 
 ssize_t v9fs_file_readn(struct file *, char *, char __user *, u32, u64);
diff --git a/fs/9p/vfs_dentry.c b/fs/9p/vfs_dentry.c
index 466d2a4fc5c..233b7d4ffe5 100644
--- a/fs/9p/vfs_dentry.c
+++ b/fs/9p/vfs_dentry.c
@@ -86,7 +86,7 @@ static int v9fs_cached_dentry_delete(const struct dentry *dentry)
  *
  */
 
-void v9fs_dentry_release(struct dentry *dentry)
+static void v9fs_dentry_release(struct dentry *dentry)
 {
         struct v9fs_dentry *dent;
         struct p9_fid *temp, *current_fid;
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 5076eeb9550..b76a40bdf4c 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -699,11 +699,6 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
                 goto error_iput;
 
 inst_out:
-        if (v9ses->cache)
-                d_set_d_op(dentry, &v9fs_cached_dentry_operations);
-        else
-                d_set_d_op(dentry, &v9fs_dentry_operations);
-
         d_add(dentry, inode);
         return NULL;
 
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index c55c614500a..dbaabe3b813 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -141,6 +141,11 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
         }
         v9fs_fill_super(sb, v9ses, flags, data);
 
+        if (v9ses->cache)
+                sb->s_d_op = &v9fs_cached_dentry_operations;
+        else
+                sb->s_d_op = &v9fs_dentry_operations;
+
         inode = v9fs_get_inode(sb, S_IFDIR | mode);
         if (IS_ERR(inode)) {
                 retval = PTR_ERR(inode);
@@ -217,9 +222,6 @@ static void v9fs_kill_super(struct super_block *s)
 
         P9_DPRINTK(P9_DEBUG_VFS, " %p\n", s);
 
-        if (s->s_root)
-                v9fs_dentry_release(s->s_root); /* clunk root */
-
         kill_anon_super(s);
 
         v9fs_session_cancel(v9ses);
diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index bf7693c384f..3b4a764ed78 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -276,7 +276,6 @@ adfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
         struct object_info obj;
         int error;
 
-        d_set_d_op(dentry, &adfs_dentry_operations);
         lock_kernel();
         error = adfs_dir_lookup_byname(dir, &dentry->d_name, &obj);
         if (error == 0) {
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index a4041b52fbc..2d7954049fb 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -473,6 +473,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
                 asb->s_namelen = ADFS_F_NAME_LEN;
         }
 
+        sb->s_d_op = &adfs_dentry_operations;
         root = adfs_iget(sb, &root_obj);
         sb->s_root = d_alloc_root(root);
         if (!sb->s_root) {
@@ -483,8 +484,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
                 kfree(asb->s_map);
                 adfs_error(sb, "get root inode failed\n");
                 goto error;
-        } else
-                d_set_d_op(sb->s_root, &adfs_dentry_operations);
+        }
         unlock_kernel();
         return 0;
 
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index a8cbdeb3402..0e95f73a702 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -201,6 +201,7 @@ extern const struct address_space_operations	 affs_aops;
 extern const struct address_space_operations     affs_aops_ofs;
 
 extern const struct dentry_operations    affs_dentry_operations;
+extern const struct dentry_operations    affs_intl_dentry_operations;
 
 static inline void
 affs_set_blocksize(struct super_block *sb, int size)
diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index 944a4042fb6..e3e9efc1fdd 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -32,7 +32,7 @@ const struct dentry_operations affs_dentry_operations = {
         .d_compare      = affs_compare_dentry,
 };
 
-static const struct dentry_operations affs_intl_dentry_operations = {
+const struct dentry_operations affs_intl_dentry_operations = {
         .d_hash         = affs_intl_hash_dentry,
         .d_compare      = affs_intl_compare_dentry,
 };
@@ -240,7 +240,6 @@ affs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
                 if (IS_ERR(inode))
                         return ERR_CAST(inode);
         }
-        d_set_d_op(dentry, AFFS_SB(sb)->s_flags & SF_INTL ? &affs_intl_dentry_operations : &affs_dentry_operations);
         d_add(dentry, inode);
         return NULL;
 }
diff --git a/fs/affs/super.c b/fs/affs/super.c
index d39081bbe7c..b31507d0f9b 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -477,12 +477,16 @@ got_root:
                 goto out_error_noinode;
         }
 
+        if (AFFS_SB(sb)->s_flags & SF_INTL)
+                sb->s_d_op = &affs_intl_dentry_operations;
+        else
+                sb->s_d_op = &affs_dentry_operations;
+
         sb->s_root = d_alloc_root(root_inode);
         if (!sb->s_root) {
                 printk(KERN_ERR "AFFS: Get root inode failed\n");
                 goto out_error;
         }
-        d_set_d_op(sb->s_root, &affs_dentry_operations);
 
         pr_debug("AFFS: s_flags=%lX\n",sb->s_flags);
         return 0;
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 34a3263d60a..e6a4ab980e3 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -62,7 +62,7 @@ const struct inode_operations afs_dir_inode_operations = {
         .setattr        = afs_setattr,
 };
 
-static const struct dentry_operations afs_fs_dentry_operations = {
+const struct dentry_operations afs_fs_dentry_operations = {
         .d_revalidate   = afs_d_revalidate,
         .d_delete       = afs_d_delete,
         .d_release      = afs_d_release,
@@ -582,8 +582,6 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
         }
 
 success:
-        d_set_d_op(dentry, &afs_fs_dentry_operations);
-
         d_add(dentry, inode);
         _leave(" = 0 { vn=%u u=%u } -> { ino=%lu v=%llu }",
                fid.vnode,
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 6d4bc1c8ff6..ab6db5abaf5 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -486,6 +486,7 @@ extern bool afs_cm_incoming_call(struct afs_call *);
  * dir.c
  */
 extern const struct inode_operations afs_dir_inode_operations;
+extern const struct dentry_operations afs_fs_dentry_operations;
 extern const struct file_operations afs_dir_file_operations;
 
 /*
diff --git a/fs/afs/super.c b/fs/afs/super.c
index f901a9d7c11..fb240e8766d 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -336,6 +336,7 @@ static int afs_fill_super(struct super_block *sb, void *data)
         if (!root)
                 goto error;
 
+        sb->s_d_op = &afs_fs_dentry_operations;
         sb->s_root = root;
 
         _leave(" = 0");
diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 98edb657b84..cbe57f3c4d8 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -26,12 +26,6 @@ static struct vfsmount *anon_inode_mnt __read_mostly;
 static struct inode *anon_inode_inode;
 static const struct file_operations anon_inode_fops;
 
-static struct dentry *anon_inodefs_mount(struct file_system_type *fs_type,
-                                int flags, const char *dev_name, void *data)
-{
-        return mount_pseudo(fs_type, "anon_inode:", NULL, ANON_INODE_FS_MAGIC);
-}
-
 /*
  * anon_inodefs_dname() is called from d_path().
  */
@@ -41,14 +35,22 @@ static char *anon_inodefs_dname(struct dentry *dentry, char *buffer, int buflen)
                                 dentry->d_name.name);
 }
 
+static const struct dentry_operations anon_inodefs_dentry_operations = {
+        .d_dname        = anon_inodefs_dname,
+};
+
+static struct dentry *anon_inodefs_mount(struct file_system_type *fs_type,
+                                int flags, const char *dev_name, void *data)
+{
+        return mount_pseudo(fs_type, "anon_inode:", NULL,
+                        &anon_inodefs_dentry_operations, ANON_INODE_FS_MAGIC);
+}
+
 static struct file_system_type anon_inode_fs_type = {
         .name           = "anon_inodefs",
         .mount          = anon_inodefs_mount,
         .kill_sb        = kill_anon_super,
 };
-static const struct dentry_operations anon_inodefs_dentry_operations = {
-        .d_dname        = anon_inodefs_dname,
-};
 
 /*
  * nop .set_page_dirty method so that people can use .page_mkwrite on
@@ -113,7 +115,6 @@ struct file *anon_inode_getfile(const char *name,
          */
         ihold(anon_inode_inode);
 
-        d_set_d_op(path.dentry, &anon_inodefs_dentry_operations);
         d_instantiate(path.dentry, anon_inode_inode);
 
         error = -ENFILE;
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 771f2352701..88da70355aa 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -473,7 +473,7 @@ static const struct super_operations bdev_sops = {
 static struct dentry *bd_mount(struct file_system_type *fs_type,
         int flags, const char *dev_name, void *data)
 {
-        return mount_pseudo(fs_type, "bdev:", &bdev_sops, 0x62646576);
+        return mount_pseudo(fs_type, "bdev:", &bdev_sops, NULL, 0x62646576);
 }
 
 static struct file_system_type bd_type = {
diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index 0ccf9a8afcd..9786963b07e 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -65,7 +65,6 @@ static struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid,
 {
         struct btrfs_fs_info *fs_info = btrfs_sb(sb)->fs_info;
         struct btrfs_root *root;
-        struct dentry *dentry;
         struct inode *inode;
         struct btrfs_key key;
         int index;
@@ -108,10 +107,7 @@ static struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid,
                 return ERR_PTR(-ESTALE);
         }
 
-        dentry = d_obtain_alias(inode);
-        if (!IS_ERR(dentry))
-                d_set_d_op(dentry, &btrfs_dentry_operations);
-        return dentry;
+        return d_obtain_alias(inode);
 fail:
         srcu_read_unlock(&fs_info->subvol_srcu, index);
         return ERR_PTR(err);
@@ -166,7 +162,6 @@ static struct dentry *btrfs_fh_to_dentry(struct super_block *sb, struct fid *fh,
 static struct dentry *btrfs_get_parent(struct dentry *child)
 {
         struct inode *dir = child->d_inode;
-        struct dentry *dentry;
         struct btrfs_root *root = BTRFS_I(dir)->root;
         struct btrfs_path *path;
         struct extent_buffer *leaf;
@@ -223,10 +218,7 @@ static struct dentry *btrfs_get_parent(struct dentry *child)
 
         key.type = BTRFS_INODE_ITEM_KEY;
         key.offset = 0;
-        dentry = d_obtain_alias(btrfs_iget(root->fs_info->sb, &key, root, NULL));
-        if (!IS_ERR(dentry))
-                d_set_d_op(dentry, &btrfs_dentry_operations);
-        return dentry;
+        return d_obtain_alias(btrfs_iget(root->fs_info->sb, &key, root, NULL));
 fail:
         btrfs_free_path(path);
         return ERR_PTR(ret);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index a0ff46a4789..a3798a3aa0d 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4084,8 +4084,6 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry)
         int index;
         int ret;
 
-        d_set_d_op(dentry, &btrfs_dentry_operations);
-
         if (dentry->d_name.len > BTRFS_NAME_LEN)
                 return ERR_PTR(-ENAMETOOLONG);
 
@@ -7117,6 +7115,10 @@ static long btrfs_fallocate(struct inode *inode, int mode,
         alloc_start = offset & ~mask;
         alloc_end =  (offset + len + mask) & ~mask;
 
+        /* We only support the FALLOC_FL_KEEP_SIZE mode */
+        if (mode && (mode != FALLOC_FL_KEEP_SIZE))
+                return -EOPNOTSUPP;
+
         /*
          * wait for ordered IO before we have any locks.  We'll loop again
          * below with the locks held.
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 883c6fa1367..22acdaa78ce 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -460,6 +460,7 @@ static int btrfs_fill_super(struct super_block *sb,
         sb->s_maxbytes = MAX_LFS_FILESIZE;
         sb->s_magic = BTRFS_SUPER_MAGIC;
         sb->s_op = &btrfs_super_ops;
+        sb->s_d_op = &btrfs_dentry_operations;
         sb->s_export_op = &btrfs_export_ops;
         sb->s_xattr = btrfs_xattr_handlers;
         sb->s_time_gran = 1;
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 5e7075d5f13..d9f652a522a 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -174,6 +174,12 @@ cifs_read_super(struct super_block *sb, void *data,
                 goto out_no_root;
         }
 
+        /* do that *after* d_alloc_root() - we want NULL ->d_op for root here */
+        if (cifs_sb_master_tcon(cifs_sb)->nocase)
+                sb->s_d_op = &cifs_ci_dentry_ops;
+        else
+                sb->s_d_op = &cifs_dentry_ops;
+
 #ifdef CONFIG_CIFS_EXPERIMENTAL
         if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
                 cFYI(1, "export ops supported");
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 2e773825835..1e95dd63563 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -130,17 +130,6 @@ cifs_bp_rename_retry:
         return full_path;
 }
 
-static void setup_cifs_dentry(struct cifsTconInfo *tcon,
-                              struct dentry *direntry,
-                              struct inode *newinode)
-{
-        if (tcon->nocase)
-                d_set_d_op(direntry, &cifs_ci_dentry_ops);
-        else
-                d_set_d_op(direntry, &cifs_dentry_ops);
-        d_instantiate(direntry, newinode);
-}
-
 /* Inode operations in similar order to how they appear in Linux file fs.h */
 
 int
@@ -327,7 +316,7 @@ cifs_create_get_file_info:
 
 cifs_create_set_dentry:
         if (rc == 0)
-                setup_cifs_dentry(tcon, direntry, newinode);
+                d_instantiate(direntry, newinode);
         else
                 cFYI(1, "Create worked, get_inode_info failed rc = %d", rc);
 
@@ -418,10 +407,6 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode,
 
                 rc = cifs_get_inode_info_unix(&newinode, full_path,
                                                 inode->i_sb, xid);
-                if (pTcon->nocase)
-                        d_set_d_op(direntry, &cifs_ci_dentry_ops);
-                else
-                        d_set_d_op(direntry, &cifs_dentry_ops);
 
                 if (rc == 0)
                         d_instantiate(direntry, newinode);
@@ -601,10 +586,6 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
                                 parent_dir_inode->i_sb, xid, NULL);
 
         if ((rc == 0) && (newInode != NULL)) {
-                if (pTcon->nocase)
-                        d_set_d_op(direntry, &cifs_ci_dentry_ops);
-                else
-                        d_set_d_op(direntry, &cifs_dentry_ops);
                 d_add(direntry, newInode);
                 if (posix_open) {
                         filp = lookup_instantiate_filp(nd, direntry,
@@ -631,10 +612,6 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
         } else if (rc == -ENOENT) {
                 rc = 0;
                 direntry->d_time = jiffies;
-                if (pTcon->nocase)
-                        d_set_d_op(direntry, &cifs_ci_dentry_ops);
-                else
-                        d_set_d_op(direntry, &cifs_dentry_ops);
                 d_add(direntry, NULL);
         /*      if it was once a directory (but how can we tell?) we could do
                 shrink_dcache_parent(direntry); */
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 0c7e36910e3..b06b6062024 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1324,10 +1324,6 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
 /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need
         to set uid/gid */
                         inc_nlink(inode);
-                        if (pTcon->nocase)
-                                d_set_d_op(direntry, &cifs_ci_dentry_ops);
-                        else
-                                d_set_d_op(direntry, &cifs_dentry_ops);
 
                         cifs_unix_basic_to_fattr(&fattr, pInfo, cifs_sb);
                         cifs_fill_uniqueid(inode->i_sb, &fattr);
@@ -1368,10 +1364,6 @@ mkdir_get_info:
                         rc = cifs_get_inode_info(&newinode, full_path, NULL,
                                                  inode->i_sb, xid, NULL);
 
-                if (pTcon->nocase)
-                        d_set_d_op(direntry, &cifs_ci_dentry_ops);
-                else
-                        d_set_d_op(direntry, &cifs_dentry_ops);
                 d_instantiate(direntry, newinode);
                  /* setting nlink not necessary except in cases where we
                   * failed to get it from the server or was set bogus */
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index fe2f6a93c49..306769de2fb 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -524,10 +524,6 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
                         cFYI(1, "Create symlink ok, getinodeinfo fail rc = %d",
                               rc);
                 } else {
-                        if (pTcon->nocase)
-                                d_set_d_op(direntry, &cifs_ci_dentry_ops);
-                        else
-                                d_set_d_op(direntry, &cifs_dentry_ops);
                         d_instantiate(direntry, newinode);
                 }
         }
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 76b1b37c9e6..7f25cc3d225 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -102,11 +102,6 @@ cifs_readdir_lookup(struct dentry *parent, struct qstr *name,
                 return NULL;
         }
 
-        if (cifs_sb_master_tcon(CIFS_SB(sb))->nocase)
-                d_set_d_op(dentry, &cifs_ci_dentry_ops);
-        else
-                d_set_d_op(dentry, &cifs_dentry_ops);
-
         alias = d_materialise_unique(dentry, inode);
         if (alias != NULL) {
                 dput(dentry);
diff --git a/fs/coda/cache.c b/fs/coda/cache.c
index 5525e1c660f..69015787618 100644
--- a/fs/coda/cache.c
+++ b/fs/coda/cache.c
@@ -20,10 +20,9 @@
 #include <linux/spinlock.h>
 
 #include <linux/coda.h>
-#include <linux/coda_linux.h>
 #include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
-#include <linux/coda_cache.h>
+#include "coda_linux.h"
+#include "coda_cache.h"
 
 static atomic_t permission_epoch = ATOMIC_INIT(0);
 
diff --git a/fs/coda/cnode.c b/fs/coda/cnode.c
index 602240569c8..6475877b076 100644
--- a/fs/coda/cnode.c
+++ b/fs/coda/cnode.c
@@ -7,9 +7,8 @@
 #include <linux/time.h>
 
 #include <linux/coda.h>
-#include <linux/coda_linux.h>
-#include <linux/coda_fs_i.h>
 #include <linux/coda_psdev.h>
+#include "coda_linux.h"
 
 static inline int coda_fideq(struct CodaFid *fid1, struct CodaFid *fid2)
 {
diff --git a/include/linux/coda_cache.h b/fs/coda/coda_cache.h
index c910b5eb1ce..c910b5eb1ce 100644
--- a/include/linux/coda_cache.h
+++ b/fs/coda/coda_cache.h
diff --git a/include/linux/coda_fs_i.h b/fs/coda/coda_fs_i.h
index e35071b1de0..e35071b1de0 100644
--- a/include/linux/coda_fs_i.h
+++ b/fs/coda/coda_fs_i.h
diff --git a/fs/coda/coda_linux.c b/fs/coda/coda_linux.c
index bf4a3fd3c8e..2bdbcc11b37 100644
--- a/fs/coda/coda_linux.c
+++ b/fs/coda/coda_linux.c
@@ -17,9 +17,8 @@
 #include <linux/string.h>
 
 #include <linux/coda.h>
-#include <linux/coda_linux.h>
 #include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
+#include "coda_linux.h"
 
 /* initialize the debugging variables */
 int coda_fake_statfs;
diff --git a/include/linux/coda_linux.h b/fs/coda/coda_linux.h
index 4ccc59c1ea8..9b0c5323890 100644
--- a/include/linux/coda_linux.h
+++ b/fs/coda/coda_linux.h
@@ -20,13 +20,15 @@
 #include <linux/wait.h>         
 #include <linux/types.h>
 #include <linux/fs.h>
-#include <linux/coda_fs_i.h>
+#include "coda_fs_i.h"
 
 /* operations */
 extern const struct inode_operations coda_dir_inode_operations;
 extern const struct inode_operations coda_file_inode_operations;
 extern const struct inode_operations coda_ioctl_inode_operations;
 
+extern const struct dentry_operations coda_dentry_operations;
+
 extern const struct address_space_operations coda_file_aops;
 extern const struct address_space_operations coda_symlink_aops;
 
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index 29badd91360..2b8dae4d121 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -23,10 +23,9 @@
 #include <asm/uaccess.h>
 
 #include <linux/coda.h>
-#include <linux/coda_linux.h>
 #include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
-#include <linux/coda_cache.h>
+#include "coda_linux.h"
+#include "coda_cache.h"
 
 #include "coda_int.h"
 
@@ -61,7 +60,7 @@ static int coda_return_EIO(void)
 }
 #define CODA_EIO_ERROR ((void *) (coda_return_EIO))
 
-static const struct dentry_operations coda_dentry_operations =
+const struct dentry_operations coda_dentry_operations =
 {
         .d_revalidate   = coda_dentry_revalidate,
         .d_delete       = coda_dentry_delete,
@@ -126,8 +125,6 @@ static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, struc
                 return ERR_PTR(error);
 
 exit:
-        d_set_d_op(entry, &coda_dentry_operations);
-
         if (inode && (type & CODA_NOCACHE))
                 coda_flag_inode(inode, C_VATTR | C_PURGE);
 
diff --git a/fs/coda/file.c b/fs/coda/file.c
index c8b50ba4366..0433057be33 100644
--- a/fs/coda/file.c
+++ b/fs/coda/file.c
@@ -21,10 +21,9 @@
 #include <asm/uaccess.h>
 
 #include <linux/coda.h>
-#include <linux/coda_linux.h>
-#include <linux/coda_fs_i.h>
 #include <linux/coda_psdev.h>
 
+#include "coda_linux.h"
 #include "coda_int.h"
 
 static ssize_t
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index f065a5d31a1..871b2771546 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -28,10 +28,9 @@
 #include <linux/vmalloc.h>
 
 #include <linux/coda.h>
-#include <linux/coda_linux.h>
 #include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
-#include <linux/coda_cache.h>
+#include "coda_linux.h"
+#include "coda_cache.h"
 
 #include "coda_int.h"
 
@@ -193,6 +192,7 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent)
         sb->s_blocksize_bits = 12;
         sb->s_magic = CODA_SUPER_MAGIC;
         sb->s_op = &coda_super_operations;
+        sb->s_d_op = &coda_dentry_operations;
         sb->s_bdi = &vc->bdi;
 
         /* get root fid from Venus: this needs the root inode */
diff --git a/fs/coda/pioctl.c b/fs/coda/pioctl.c
index 741f0bd0391..6cbb3afb36d 100644
--- a/fs/coda/pioctl.c
+++ b/fs/coda/pioctl.c
@@ -19,10 +19,10 @@
 #include <asm/uaccess.h>
 
 #include <linux/coda.h>
-#include <linux/coda_linux.h>
-#include <linux/coda_fs_i.h>
 #include <linux/coda_psdev.h>
 
+#include "coda_linux.h"
+
 /* pioctl ops */
 static int coda_ioctl_permission(struct inode *inode, int mask, unsigned int flags);
 static long coda_pioctl(struct file *filp, unsigned int cmd,
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index 62647a8595e..8f616e0e252 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -43,10 +43,10 @@
 #include <asm/uaccess.h>
 
 #include <linux/coda.h>
-#include <linux/coda_linux.h>
-#include <linux/coda_fs_i.h>
 #include <linux/coda_psdev.h>
 
+#include "coda_linux.h"
+
 #include "coda_int.h"
 
 /* statistics */
diff --git a/fs/coda/symlink.c b/fs/coda/symlink.c
index af78f007a2b..ab94ef63cae 100644
--- a/fs/coda/symlink.c
+++ b/fs/coda/symlink.c
@@ -16,9 +16,9 @@
 #include <linux/pagemap.h>
 
 #include <linux/coda.h>
-#include <linux/coda_linux.h>
 #include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
+
+#include "coda_linux.h"
 
 static int coda_symlink_filler(struct file *file, struct page *page)
 {
diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c
index c3563cab975..9727e0c5257 100644
--- a/fs/coda/upcall.c
+++ b/fs/coda/upcall.c
@@ -33,10 +33,9 @@
 #include <linux/vfs.h>
 
 #include <linux/coda.h>
-#include <linux/coda_linux.h>
 #include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
-#include <linux/coda_cache.h>
+#include "coda_linux.h"
+#include "coda_cache.h"
 
 #include "coda_int.h"
 
diff --git a/fs/configfs/configfs_internal.h b/fs/configfs/configfs_internal.h
index 026cf68553a..82bda8fdfc1 100644
--- a/fs/configfs/configfs_internal.h
+++ b/fs/configfs/configfs_internal.h
@@ -90,6 +90,7 @@ extern const struct file_operations configfs_file_operations;
 extern const struct file_operations bin_fops;
 extern const struct inode_operations configfs_dir_inode_operations;
 extern const struct inode_operations configfs_symlink_inode_operations;
+extern const struct dentry_operations configfs_dentry_ops;
 
 extern int configfs_symlink(struct inode *dir, struct dentry *dentry,
                             const char *symname);
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 36637a8c1ed..90ff3cb10de 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -72,7 +72,7 @@ static int configfs_d_delete(const struct dentry *dentry)
         return 1;
 }
 
-static const struct dentry_operations configfs_dentry_ops = {
+const struct dentry_operations configfs_dentry_ops = {
         .d_iput         = configfs_d_iput,
         /* simple_delete_dentry() isn't exported */
         .d_delete       = configfs_d_delete,
@@ -442,7 +442,6 @@ static int configfs_attach_attr(struct configfs_dirent * sd, struct dentry * den
                 return error;
         }
 
-        d_set_d_op(dentry, &configfs_dentry_ops);
         d_rehash(dentry);
 
         return 0;
@@ -489,7 +488,6 @@ static struct dentry * configfs_lookup(struct inode *dir,
                  */
                 if (dentry->d_name.len > NAME_MAX)
                         return ERR_PTR(-ENAMETOOLONG);
-                d_set_d_op(dentry, &configfs_dentry_ops);
                 d_add(dentry, NULL);
                 return NULL;
         }
@@ -683,7 +681,6 @@ static int create_default_group(struct config_group *parent_group,
         ret = -ENOMEM;
         child = d_alloc(parent, &name);
         if (child) {
-                d_set_d_op(child, &configfs_dentry_ops);
                 d_add(child, NULL);
 
                 ret = configfs_attach_group(&parent_group->cg_item,
@@ -1681,7 +1678,6 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys)
         err = -ENOMEM;
         dentry = d_alloc(configfs_sb->s_root, &name);
         if (dentry) {
-                d_set_d_op(dentry, &configfs_dentry_ops);
                 d_add(dentry, NULL);
 
                 err = configfs_attach_group(sd->s_element, &group->cg_item,
diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c
index 7d3607febe1..ecc62178bed 100644
--- a/fs/configfs/mount.c
+++ b/fs/configfs/mount.c
@@ -101,6 +101,7 @@ static int configfs_fill_super(struct super_block *sb, void *data, int silent)
         configfs_root_group.cg_item.ci_dentry = root;
         root->d_fsdata = &configfs_root;
         sb->s_root = root;
+        sb->s_d_op = &configfs_dentry_ops; /* the rest get that */
         return 0;
 }
 
diff --git a/fs/dcache.c b/fs/dcache.c
index 5699d4c027c..0c6d5c549d8 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1320,6 +1320,7 @@ struct dentry *d_alloc(struct dentry * parent, const struct qstr *name)
                 __dget_dlock(parent);
                 dentry->d_parent = parent;
                 dentry->d_sb = parent->d_sb;
+                d_set_d_op(dentry, dentry->d_sb->s_d_op);
                 list_add(&dentry->d_u.d_child, &parent->d_subdirs);
                 spin_unlock(&parent->d_lock);
         }
@@ -1335,6 +1336,7 @@ struct dentry *d_alloc_pseudo(struct super_block *sb, const struct qstr *name)
         struct dentry *dentry = d_alloc(NULL, name);
         if (dentry) {
                 dentry->d_sb = sb;
+                d_set_d_op(dentry, dentry->d_sb->s_d_op);
                 dentry->d_parent = dentry;
                 dentry->d_flags |= DCACHE_DISCONNECTED;
         }
@@ -1507,6 +1509,7 @@ struct dentry * d_alloc_root(struct inode * root_inode)
                 res = d_alloc(NULL, &name);
                 if (res) {
                         res->d_sb = root_inode->i_sb;
+                        d_set_d_op(res, res->d_sb->s_d_op);
                         res->d_parent = res;
                         d_instantiate(res, root_inode);
                 }
@@ -1567,6 +1570,7 @@ struct dentry *d_obtain_alias(struct inode *inode)
         /* attach a disconnected dentry */
         spin_lock(&tmp->d_lock);
         tmp->d_sb = inode->i_sb;
+        d_set_d_op(tmp, tmp->d_sb->s_d_op);
         tmp->d_inode = inode;
         tmp->d_flags |= DCACHE_DISCONNECTED;
         list_add(&tmp->d_alias, &inode->i_dentry);
@@ -1966,7 +1970,7 @@ out:
 /**
  * d_validate - verify dentry provided from insecure source (deprecated)
  * @dentry: The dentry alleged to be valid child of @dparent
- * @dparent: The parent dentry (known to be valid)
+ * @parent: The parent dentry (known to be valid)
  *
  * An insecure source has sent us a dentry, here we verify it and dget() it.
  * This is used by ncpfs in its readdir implementation.
@@ -2449,8 +2453,7 @@ static int prepend_name(char **buffer, int *buflen, struct qstr *name)
 }
 
 /**
- * Prepend path string to a buffer
- *
+ * prepend_path - Prepend path string to a buffer
  * @path: the dentry/vfsmount to report
  * @root: root vfsmnt/dentry (may be modified by this function)
  * @buffer: pointer to the end of the buffer
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 337352a9475..64ff0233075 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -441,7 +441,6 @@ static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,
         struct qstr lower_name;
         int rc = 0;
 
-        d_set_d_op(ecryptfs_dentry, &ecryptfs_dops);
         if ((ecryptfs_dentry->d_name.len == 1
              && !strcmp(ecryptfs_dentry->d_name.name, "."))
             || (ecryptfs_dentry->d_name.len == 2
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 35103867537..9ed47690632 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -141,21 +141,9 @@ int ecryptfs_init_persistent_file(struct dentry *ecryptfs_dentry)
         return rc;
 }
 
-/**
- * ecryptfs_interpose
- * @lower_dentry: Existing dentry in the lower filesystem
- * @dentry: ecryptfs' dentry
- * @sb: ecryptfs's super_block
- * @flags: flags to govern behavior of interpose procedure
- *
- * Interposes upper and lower dentries.
- *
- * Returns zero on success; non-zero otherwise
- */
-int ecryptfs_interpose(struct dentry *lower_dentry, struct dentry *dentry,
-                       struct super_block *sb, u32 flags)
+static inode *ecryptfs_get_inode(struct inode *lower_inode,
+                       struct super_block *sb)
 {
-        struct inode *lower_inode;
         struct inode *inode;
         int rc = 0;
 
@@ -189,17 +177,38 @@ int ecryptfs_interpose(struct dentry *lower_dentry, struct dentry *dentry,
         if (special_file(lower_inode->i_mode))
                 init_special_inode(inode, lower_inode->i_mode,
                                    lower_inode->i_rdev);
-        d_set_d_op(dentry, &ecryptfs_dops);
         fsstack_copy_attr_all(inode, lower_inode);
         /* This size will be overwritten for real files w/ headers and
          * other metadata */
         fsstack_copy_inode_size(inode, lower_inode);
+        return inode;
+out:
+        return ERR_PTR(rc);
+}
+
+/**
+ * ecryptfs_interpose
+ * @lower_dentry: Existing dentry in the lower filesystem
+ * @dentry: ecryptfs' dentry
+ * @sb: ecryptfs's super_block
+ * @flags: flags to govern behavior of interpose procedure
+ *
+ * Interposes upper and lower dentries.
+ *
+ * Returns zero on success; non-zero otherwise
+ */
+int ecryptfs_interpose(struct dentry *lower_dentry, struct dentry *dentry,
+                       struct super_block *sb, u32 flags)
+{
+        struct inode *lower_inode = lower_dentry->d_inode;
+        struct inode *inode = ecryptfs_get_inode(lower_inode, sb);
+        if (IS_ERR(inode)
+                return PTR_ERR(inode);
         if (flags & ECRYPTFS_INTERPOSE_FLAG_D_ADD)
                 d_add(dentry, inode);
         else
                 d_instantiate(dentry, inode);
-out:
-        return rc;
+        return 0;
 }
 
 enum { ecryptfs_opt_sig, ecryptfs_opt_ecryptfs_sig,
@@ -492,59 +501,11 @@ struct kmem_cache *ecryptfs_sb_info_cache;
 static struct file_system_type ecryptfs_fs_type;
 
 /**
- * ecryptfs_read_super
- * @sb: The ecryptfs super block
- * @dev_name: The path to mount over
- *
- * Read the super block of the lower filesystem, and use
- * ecryptfs_interpose to create our initial inode and super block
- * struct.
- */
-static int ecryptfs_read_super(struct super_block *sb, const char *dev_name)
-{
-        struct path path;
-        int rc;
-
-        rc = kern_path(dev_name, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &path);
-        if (rc) {
-                ecryptfs_printk(KERN_WARNING, "path_lookup() failed\n");
-                goto out;
-        }
-        if (path.dentry->d_sb->s_type == &ecryptfs_fs_type) {
-                rc = -EINVAL;
-                printk(KERN_ERR "Mount on filesystem of type "
-                        "eCryptfs explicitly disallowed due to "
-                        "known incompatibilities\n");
-                goto out_free;
-        }
-        ecryptfs_set_superblock_lower(sb, path.dentry->d_sb);
-        sb->s_maxbytes = path.dentry->d_sb->s_maxbytes;
-        sb->s_blocksize = path.dentry->d_sb->s_blocksize;
-        ecryptfs_set_dentry_lower(sb->s_root, path.dentry);
-        ecryptfs_set_dentry_lower_mnt(sb->s_root, path.mnt);
-        rc = ecryptfs_interpose(path.dentry, sb->s_root, sb, 0);
-        if (rc)
-                goto out_free;
-        rc = 0;
-        goto out;
-out_free:
-        path_put(&path);
-out:
-        return rc;
-}
-
-/**
  * ecryptfs_get_sb
  * @fs_type
  * @flags
  * @dev_name: The path to mount over
  * @raw_data: The options passed into the kernel
- *
- * The whole ecryptfs_get_sb process is broken into 3 functions:
- * ecryptfs_parse_options(): handle options passed to ecryptfs, if any
- * ecryptfs_read_super(): this accesses the lower filesystem and uses
- *                        ecryptfs_interpose to perform most of the linking
- * ecryptfs_interpose(): links the lower filesystem into ecryptfs (inode.c)
  */
 static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags,
                         const char *dev_name, void *raw_data)
@@ -553,6 +514,8 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
         struct ecryptfs_sb_info *sbi;
         struct ecryptfs_dentry_info *root_info;
         const char *err = "Getting sb failed";
+        struct inode *inode;
+        struct path path;
         int rc;
 
         sbi = kmem_cache_zalloc(ecryptfs_sb_info_cache, GFP_KERNEL);
@@ -575,10 +538,8 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
 
         s->s_flags = flags;
         rc = bdi_setup_and_register(&sbi->bdi, "ecryptfs", BDI_CAP_MAP_COPY);
-        if (rc) {
-                deactivate_locked_super(s);
-                goto out;
-        }
+        if (rc)
+                goto out1;
 
         ecryptfs_set_superblock_private(s, sbi);
         s->s_bdi = &sbi->bdi;
@@ -586,34 +547,54 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
         /* ->kill_sb() will take care of sbi after that point */
         sbi = NULL;
         s->s_op = &ecryptfs_sops;
+        s->s_d_op = &ecryptfs_dops;
 
-        rc = -ENOMEM;
-        s->s_root = d_alloc(NULL, &(const struct qstr) {
-                             .hash = 0,.name = "/",.len = 1});
+        err = "Reading sb failed";
+        rc = kern_path(dev_name, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &path);
+        if (rc) {
+                ecryptfs_printk(KERN_WARNING, "kern_path() failed\n");
+                goto out1;
+        }
+        if (path.dentry->d_sb->s_type == &ecryptfs_fs_type) {
+                rc = -EINVAL;
+                printk(KERN_ERR "Mount on filesystem of type "
+                        "eCryptfs explicitly disallowed due to "
+                        "known incompatibilities\n");
+                goto out_free;
+        }
+        ecryptfs_set_superblock_lower(s, path.dentry->d_sb);
+        s->s_maxbytes = path.dentry->d_sb->s_maxbytes;
+        s->s_blocksize = path.dentry->d_sb->s_blocksize;
+
+        inode = ecryptfs_get_inode(path.dentry->d_inode, s);
+        rc = PTR_ERR(inode);
+        if (IS_ERR(inode))
+                goto out_free;
+
+        s->s_root = d_alloc_root(inode);
         if (!s->s_root) {
-                deactivate_locked_super(s);
-                goto out;
+                iput(inode);
+                rc = -ENOMEM;
+                goto out_free;
         }
-        d_set_d_op(s->s_root, &ecryptfs_dops);
-        s->s_root->d_sb = s;
-        s->s_root->d_parent = s->s_root;
 
+        rc = -ENOMEM;
         root_info = kmem_cache_zalloc(ecryptfs_dentry_info_cache, GFP_KERNEL);
-        if (!root_info) {
-                deactivate_locked_super(s);
-                goto out;
-        }
+        if (!root_info)
+                goto out_free;
+
         /* ->kill_sb() will take care of root_info */
         ecryptfs_set_dentry_private(s->s_root, root_info);
+        ecryptfs_set_dentry_lower(s->s_root, path.dentry);
+        ecryptfs_set_dentry_lower_mnt(s->s_root, path.mnt);
+
         s->s_flags |= MS_ACTIVE;
-        rc = ecryptfs_read_super(s, dev_name);
-        if (rc) {
-                deactivate_locked_super(s);
-                err = "Reading sb failed";
-                goto out;
-        }
         return dget(s->s_root);
 
+out_free:
+        path_put(&path);
+out1:
+        deactivate_locked_super(s);
 out:
         if (sbi) {
                 ecryptfs_destroy_mount_crypt_stat(&sbi->mount_crypt_stat);
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index d202d765dad..c4068f6abf0 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -3644,6 +3644,10 @@ long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len)
         struct ext4_map_blocks map;
         unsigned int credits, blkbits = inode->i_blkbits;
 
+        /* We only support the FALLOC_FL_KEEP_SIZE mode */
+        if (mode && (mode != FALLOC_FL_KEEP_SIZE))
+                return -EOPNOTSUPP;
+
         /*
          * currently supporting (pre)allocate mode for extent-based
          * files _only_
diff --git a/fs/fat/fat.h b/fs/fat/fat.h
index d75a77f85c2..f50408901f7 100644
--- a/fs/fat/fat.h
+++ b/fs/fat/fat.h
@@ -319,7 +319,8 @@ extern struct inode *fat_build_inode(struct super_block *sb,
                         struct msdos_dir_entry *de, loff_t i_pos);
 extern int fat_sync_inode(struct inode *inode);
 extern int fat_fill_super(struct super_block *sb, void *data, int silent,
-                        const struct inode_operations *fs_dir_inode_ops, int isvfat);
+                        const struct inode_operations *fs_dir_inode_ops,
+                        int isvfat, void (*setup)(struct super_block *));
 
 extern int fat_flush_inodes(struct super_block *sb, struct inode *i1,
                             struct inode *i2);
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 206351af7c5..86753fe10bd 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -703,7 +703,6 @@ static struct dentry *fat_fh_to_dentry(struct super_block *sb,
                 struct fid *fid, int fh_len, int fh_type)
 {
         struct inode *inode = NULL;
-        struct dentry *result;
         u32 *fh = fid->raw;
 
         if (fh_len < 5 || fh_type != 3)
@@ -748,10 +747,7 @@ static struct dentry *fat_fh_to_dentry(struct super_block *sb,
          * the fat_iget lookup again.  If that fails, then we are totally out
          * of luck.  But all that is for another day
          */
-        result = d_obtain_alias(inode);
-        if (!IS_ERR(result))
-                d_set_d_op(result, sb->s_root->d_op);
-        return result;
+        return d_obtain_alias(inode);
 }
 
 static int
@@ -799,8 +795,6 @@ static struct dentry *fat_get_parent(struct dentry *child)
         brelse(bh);
 
         parent = d_obtain_alias(inode);
-        if (!IS_ERR(parent))
-                d_set_d_op(parent, sb->s_root->d_op);
 out:
         unlock_super(sb);
 
@@ -1244,7 +1238,8 @@ static int fat_read_root(struct inode *inode)
  * Read the super block of an MS-DOS FS.
  */
 int fat_fill_super(struct super_block *sb, void *data, int silent,
-                   const struct inode_operations *fs_dir_inode_ops, int isvfat)
+                   const struct inode_operations *fs_dir_inode_ops, int isvfat,
+                   void (*setup)(struct super_block *))
 {
         struct inode *root_inode = NULL, *fat_inode = NULL;
         struct buffer_head *bh;
@@ -1280,6 +1275,8 @@ int fat_fill_super(struct super_block *sb, void *data, int silent,
         if (error)
                 goto out_fail;
 
+        setup(sb); /* flavour-specific stuff that needs options */
+
         error = -EIO;
         sb_min_blocksize(sb, 512);
         bh = sb_bread(sb, 0);
diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c
index 35ffe43afa4..711499040eb 100644
--- a/fs/fat/namei_msdos.c
+++ b/fs/fat/namei_msdos.c
@@ -227,11 +227,7 @@ static struct dentry *msdos_lookup(struct inode *dir, struct dentry *dentry,
         }
 out:
         unlock_super(sb);
-        d_set_d_op(dentry, &msdos_dentry_operations);
-        dentry = d_splice_alias(inode, dentry);
-        if (dentry)
-                d_set_d_op(dentry, &msdos_dentry_operations);
-        return dentry;
+        return d_splice_alias(inode, dentry);
 
 error:
         unlock_super(sb);
@@ -661,21 +657,16 @@ static const struct inode_operations msdos_dir_inode_operations = {
         .getattr        = fat_getattr,
 };
 
-static int msdos_fill_super(struct super_block *sb, void *data, int silent)
+static void setup(struct super_block *sb)
 {
-        int res;
-
-        lock_super(sb);
-        res = fat_fill_super(sb, data, silent, &msdos_dir_inode_operations, 0);
-        if (res) {
-                unlock_super(sb);
-                return res;
-        }
-
+        sb->s_d_op = &msdos_dentry_operations;
         sb->s_flags |= MS_NOATIME;
-        d_set_d_op(sb->s_root, &msdos_dentry_operations);
-        unlock_super(sb);
-        return 0;
+}
+
+static int msdos_fill_super(struct super_block *sb, void *data, int silent)
+{
+        return fat_fill_super(sb, data, silent, &msdos_dir_inode_operations,
+                             0, setup);
 }
 
 static struct dentry *msdos_mount(struct file_system_type *fs_type,
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index e3ffc5e1233..f88f752babd 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -772,13 +772,10 @@ static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
 
 out:
         unlock_super(sb);
-        d_set_d_op(dentry, sb->s_root->d_op);
         dentry->d_time = dentry->d_parent->d_inode->i_version;
         dentry = d_splice_alias(inode, dentry);
-        if (dentry) {
-                d_set_d_op(dentry, sb->s_root->d_op);
+        if (dentry)
                 dentry->d_time = dentry->d_parent->d_inode->i_version;
-        }
         return dentry;
 
 error:
@@ -1066,24 +1063,18 @@ static const struct inode_operations vfat_dir_inode_operations = {
         .getattr        = fat_getattr,
 };
 
-static int vfat_fill_super(struct super_block *sb, void *data, int silent)
+static void setup(struct super_block *sb)
 {
-        int res;
-
-        lock_super(sb);
-        res = fat_fill_super(sb, data, silent, &vfat_dir_inode_operations, 1);
-        if (res) {
-                unlock_super(sb);
-                return res;
-        }
-
         if (MSDOS_SB(sb)->options.name_check != 's')
-                d_set_d_op(sb->s_root, &vfat_ci_dentry_ops);
+                sb->s_d_op = &vfat_ci_dentry_ops;
         else
-                d_set_d_op(sb->s_root, &vfat_dentry_ops);
+                sb->s_d_op = &vfat_dentry_ops;
+}
 
-        unlock_super(sb);
-        return 0;
+static int vfat_fill_super(struct super_block *sb, void *data, int silent)
+{
+        return fat_fill_super(sb, data, silent, &vfat_dir_inode_operations,
+                             1, setup);
 }
 
 static struct dentry *vfat_mount(struct file_system_type *fs_type,
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 042af7346ec..bfed8447ed8 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -350,7 +350,6 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
         }
 
         entry = newent ? newent : entry;
-        d_set_d_op(entry, &fuse_dentry_operations);
         if (outarg_valid)
                 fuse_change_entry_timeout(entry, &outarg);
         else
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index f62b32cffea..9e3f68cc1bd 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -617,10 +617,8 @@ static struct dentry *fuse_get_dentry(struct super_block *sb,
                 goto out_iput;
 
         entry = d_obtain_alias(inode);
-        if (!IS_ERR(entry) && get_node_id(inode) != FUSE_ROOT_ID) {
-                d_set_d_op(entry, &fuse_dentry_operations);
+        if (!IS_ERR(entry) && get_node_id(inode) != FUSE_ROOT_ID)
                 fuse_invalidate_entry_cache(entry);
-        }
 
         return entry;
 
@@ -719,10 +717,8 @@ static struct dentry *fuse_get_parent(struct dentry *child)
         }
 
         parent = d_obtain_alias(inode);
-        if (!IS_ERR(parent) && get_node_id(inode) != FUSE_ROOT_ID) {
-                d_set_d_op(parent, &fuse_dentry_operations);
+        if (!IS_ERR(parent) && get_node_id(inode) != FUSE_ROOT_ID)
                 fuse_invalidate_entry_cache(parent);
-        }
 
         return parent;
 }
@@ -989,6 +985,8 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
                 iput(root);
                 goto err_put_conn;
         }
+        /* only now - we want root dentry with NULL ->d_op */
+        sb->s_d_op = &fuse_dentry_operations;
 
         init_req = fuse_request_alloc();
         if (!init_req)
diff --git a/fs/gfs2/export.c b/fs/gfs2/export.c
index 97012ecff56..9023db8184f 100644
--- a/fs/gfs2/export.c
+++ b/fs/gfs2/export.c
@@ -126,12 +126,7 @@ static int gfs2_get_name(struct dentry *parent, char *name,
 
 static struct dentry *gfs2_get_parent(struct dentry *child)
 {
-        struct dentry *dentry;
-
-        dentry = d_obtain_alias(gfs2_lookupi(child->d_inode, &gfs2_qdotdot, 1));
-        if (!IS_ERR(dentry))
-                d_set_d_op(dentry, &gfs2_dops);
-        return dentry;
+        return d_obtain_alias(gfs2_lookupi(child->d_inode, &gfs2_qdotdot, 1));
 }
 
 static struct dentry *gfs2_get_dentry(struct super_block *sb,
@@ -139,7 +134,6 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb,
 {
         struct gfs2_sbd *sdp = sb->s_fs_info;
         struct inode *inode;
-        struct dentry *dentry;
 
         inode = gfs2_ilookup(sb, inum->no_addr);
         if (inode) {
@@ -156,10 +150,7 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb,
                 return ERR_CAST(inode);
 
 out_inode:
-        dentry = d_obtain_alias(inode);
-        if (!IS_ERR(dentry))
-                d_set_d_op(dentry, &gfs2_dops);
-        return dentry;
+        return d_obtain_alias(inode);
 }
 
 static struct dentry *gfs2_fh_to_dentry(struct super_block *sb, struct fid *fid,
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 2aeabd4218c..693f4470a2d 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -440,7 +440,6 @@ static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr,
                 iput(inode);
                 return -ENOMEM;
         }
-        d_set_d_op(dentry, &gfs2_dops);
         *dptr = dentry;
         return 0;
 }
@@ -1106,6 +1105,7 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent
 
         sb->s_magic = GFS2_MAGIC;
         sb->s_op = &gfs2_super_ops;
+        sb->s_d_op = &gfs2_dops;
         sb->s_export_op = &gfs2_export_ops;
         sb->s_xattr = gfs2_xattr_handlers;
         sb->s_qcop = &gfs2_quotactl_ops;
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 1501db4f0e6..040b5a2e655 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -106,8 +106,6 @@ static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
 {
         struct inode *inode = NULL;
 
-        d_set_d_op(dentry, &gfs2_dops);
-
         inode = gfs2_lookupi(dir, &dentry->d_name, 0);
         if (inode && IS_ERR(inode))
                 return ERR_CAST(inode);
@@ -1427,6 +1425,10 @@ static long gfs2_fallocate(struct inode *inode, int mode, loff_t offset,
         loff_t next = (offset + len - 1) >> sdp->sd_sb.sb_bsize_shift;
         next = (next + 1) << sdp->sd_sb.sb_bsize_shift;
 
+        /* We only support the FALLOC_FL_KEEP_SIZE mode */
+        if (mode && (mode != FALLOC_FL_KEEP_SIZE))
+                return -EOPNOTSUPP;
+
         offset = (offset >> sdp->sd_sb.sb_bsize_shift) <<
                  sdp->sd_sb.sb_bsize_shift;
 
diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index ea4aefe7c65..afa66aaa223 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -25,8 +25,6 @@ static struct dentry *hfs_lookup(struct inode *dir, struct dentry *dentry,
         struct inode *inode = NULL;
         int res;
 
-        d_set_d_op(dentry, &hfs_dentry_operations);
-
         hfs_find_init(HFS_SB(dir->i_sb)->cat_tree, &fd);
         hfs_cat_build_key(dir->i_sb, fd.search_key, dir->i_ino, &dentry->d_name);
         res = hfs_brec_read(&fd, &rec, sizeof(rec));
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index 0bef62aa4f4..1b55f704fb2 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -429,13 +429,12 @@ static int hfs_fill_super(struct super_block *sb, void *data, int silent)
         if (!root_inode)
                 goto bail_no_root;
 
+        sb->s_d_op = &hfs_dentry_operations;
         res = -ENOMEM;
         sb->s_root = d_alloc_root(root_inode);
         if (!sb->s_root)
                 goto bail_iput;
 
-        d_set_d_op(sb->s_root, &hfs_dentry_operations);
-
         /* everything's okay */
         return 0;
 
diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index f896dc84302..4df5059c25d 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -37,7 +37,6 @@ static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
 
         sb = dir->i_sb;
 
-        d_set_d_op(dentry, &hfsplus_dentry_operations);
         dentry->d_fsdata = NULL;
         hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
         hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name);
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 6ee6ad20acf..9a3b4795f43 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -444,13 +444,13 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
                 err = PTR_ERR(root);
                 goto cleanup;
         }
+        sb->s_d_op = &hfsplus_dentry_operations;
         sb->s_root = d_alloc_root(root);
         if (!sb->s_root) {
                 iput(root);
                 err = -ENOMEM;
                 goto cleanup;
         }
-        d_set_d_op(sb->s_root, &hfsplus_dentry_operations);
 
         str.len = sizeof(HFSP_HIDDENDIR_NAME) - 1;
         str.name = HFSP_HIDDENDIR_NAME;
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index d3244d949a4..2638c834ed2 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -612,7 +612,6 @@ struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry,
                 goto out_put;
 
         d_add(dentry, inode);
-        d_set_d_op(dentry, &hostfs_dentry_ops);
         return NULL;
 
  out_put:
@@ -922,6 +921,7 @@ static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent)
         sb->s_blocksize_bits = 10;
         sb->s_magic = HOSTFS_SUPER_MAGIC;
         sb->s_op = &hostfs_sbops;
+        sb->s_d_op = &hostfs_dentry_ops;
         sb->s_maxbytes = MAX_LFS_FILESIZE;
 
         /* NULL is printed as <NULL> by sprintf: avoid that. */
diff --git a/fs/hpfs/dentry.c b/fs/hpfs/dentry.c
index 32c13a94e1e..05d4816e4e7 100644
--- a/fs/hpfs/dentry.c
+++ b/fs/hpfs/dentry.c
@@ -58,12 +58,7 @@ static int hpfs_compare_dentry(const struct dentry *parent,
         return 0;
 }
 
-static const struct dentry_operations hpfs_dentry_operations = {
+const struct dentry_operations hpfs_dentry_operations = {
         .d_hash         = hpfs_hash_dentry,
         .d_compare      = hpfs_compare_dentry,
 };
-
-void hpfs_set_dentry_operations(struct dentry *dentry)
-{
-        d_set_d_op(dentry, &hpfs_dentry_operations);
-}
diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c
index 2338130cceb..d32f63a569f 100644
--- a/fs/hpfs/dir.c
+++ b/fs/hpfs/dir.c
@@ -298,7 +298,6 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct name
 
         end:
         end_add:
-        hpfs_set_dentry_operations(dentry);
         unlock_kernel();
         d_add(dentry, result);
         return NULL;
diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h
index 2fee17d0d9a..1c43dbea55e 100644
--- a/fs/hpfs/hpfs_fn.h
+++ b/fs/hpfs/hpfs_fn.h
@@ -233,7 +233,7 @@ void hpfs_mark_4buffers_dirty(struct quad_buffer_head *);
 
 /* dentry.c */
 
-void hpfs_set_dentry_operations(struct dentry *);
+extern const struct dentry_operations hpfs_dentry_operations;
 
 /* dir.c */
 
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index 49935ba78db..b30426b1fc9 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -550,6 +550,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
         /* Fill superblock stuff */
         s->s_magic = HPFS_SUPER_MAGIC;
         s->s_op = &hpfs_sops;
+        s->s_d_op = &hpfs_dentry_operations;
 
         sbi->sb_root = superblock->root;
         sbi->sb_fs_size = superblock->n_sectors;
@@ -651,7 +652,6 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
                 iput(root);
                 goto bail0;
         }
-        hpfs_set_dentry_operations(s->s_root);
 
         /*
          * find the root directory's . pointer & finish filling in the inode
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 844a7903c72..a0f3833c0db 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -939,17 +939,18 @@ root_found:
                 goto out_iput;
         }
 
-        /* get the root dentry */
-        s->s_root = d_alloc_root(inode);
-        if (!(s->s_root))
-                goto out_no_root;
-
         table = 0;
         if (joliet_level)
                 table += 2;
         if (opt.check == 'r')
                 table++;
-        d_set_d_op(s->s_root, &isofs_dentry_ops[table]);
+
+        s->s_d_op = &isofs_dentry_ops[table];
+
+        /* get the root dentry */
+        s->s_root = d_alloc_root(inode);
+        if (!(s->s_root))
+                goto out_no_root;
 
         kfree(opt.iocharset);
 
diff --git a/fs/isofs/namei.c b/fs/isofs/namei.c
index 679a849c3b2..4fb3e8074fd 100644
--- a/fs/isofs/namei.c
+++ b/fs/isofs/namei.c
@@ -172,8 +172,6 @@ struct dentry *isofs_lookup(struct inode *dir, struct dentry *dentry, struct nam
         struct inode *inode;
         struct page *page;
 
-        d_set_d_op(dentry, dir->i_sb->s_root->d_op);
-
         page = alloc_page(GFP_USER);
         if (!page)
                 return ERR_PTR(-ENOMEM);
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 4414e3a4226..81ead850ddb 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1465,9 +1465,6 @@ static struct dentry *jfs_lookup(struct inode *dip, struct dentry *dentry, struc
 
         jfs_info("jfs_lookup: name = %s", name);
 
-        if (JFS_SBI(dip->i_sb)->mntflag & JFS_OS2)
-                d_set_d_op(dentry, &jfs_ci_dentry_operations);
-
         if ((name[0] == '.') && (len == 1))
                 inum = dip->i_ino;
         else if (strcmp(name, "..") == 0)
@@ -1492,12 +1489,7 @@ static struct dentry *jfs_lookup(struct inode *dip, struct dentry *dentry, struc
                 return ERR_CAST(ip);
         }
 
-        dentry = d_splice_alias(ip, dentry);
-
-        if (dentry && (JFS_SBI(dip->i_sb)->mntflag & JFS_OS2))
-                d_set_d_op(dentry, &jfs_ci_dentry_operations);
-
-        return dentry;
+        return d_splice_alias(ip, dentry);
 }
 
 static struct inode *jfs_nfs_get_inode(struct super_block *sb,
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 3150d766e0d..eeca48a031a 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -515,6 +515,9 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
 
         sb->s_magic = JFS_SUPER_MAGIC;
 
+        if (sbi->mntflag & JFS_OS2)
+                sb->s_d_op = &jfs_ci_dentry_operations;
+
         inode = jfs_iget(sb, ROOT_I);
         if (IS_ERR(inode)) {
                 ret = PTR_ERR(inode);
@@ -524,9 +527,6 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
         if (!sb->s_root)
                 goto out_no_root;
 
-        if (sbi->mntflag & JFS_OS2)
-                d_set_d_op(sb->s_root, &jfs_ci_dentry_operations);
-
         /* logical blocks are represented by 40 bits in pxd_t, etc. */
         sb->s_maxbytes = ((u64) sb->s_blocksize) << 40;
 #if BITS_PER_LONG == 32
diff --git a/fs/libfs.c b/fs/libfs.c
index 889311e3d06..c88eab55aec 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -217,7 +217,8 @@ static const struct super_operations simple_super_operations = {
  * will never be mountable)
  */
 struct dentry *mount_pseudo(struct file_system_type *fs_type, char *name,
-        const struct super_operations *ops, unsigned long magic)
+        const struct super_operations *ops,
+        const struct dentry_operations *dops, unsigned long magic)
 {
         struct super_block *s = sget(fs_type, NULL, set_anon_super, NULL);
         struct dentry *dentry;
@@ -254,6 +255,7 @@ struct dentry *mount_pseudo(struct file_system_type *fs_type, char *name,
         dentry->d_parent = dentry;
         d_instantiate(dentry, root);
         s->s_root = dentry;
+        s->s_d_op = dops;
         s->s_flags |= MS_ACTIVE;
         return dget(s->s_root);
 
diff --git a/fs/minix/namei.c b/fs/minix/namei.c
index 1b9e07728a9..ce7337ddfdb 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -23,8 +23,6 @@ static struct dentry *minix_lookup(struct inode * dir, struct dentry *dentry, st
         struct inode * inode = NULL;
         ino_t ino;
 
-        d_set_d_op(dentry, dir->i_sb->s_root->d_op);
-
         if (dentry->d_name.len > minix_sb(dir->i_sb)->s_namelen)
                 return ERR_PTR(-ENAMETOOLONG);
 
diff --git a/fs/namei.c b/fs/namei.c
index 24ece10470b..0b14f6910fc 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1950,8 +1950,9 @@ int may_open(struct path *path, int acc_mode, int flag)
         return break_lease(inode, flag);
 }
 
-static int handle_truncate(struct path *path)
+static int handle_truncate(struct file *filp)
 {
+        struct path *path = &filp->f_path;
         struct inode *inode = path->dentry->d_inode;
         int error = get_write_access(inode);
         if (error)
@@ -1965,7 +1966,7 @@ static int handle_truncate(struct path *path)
         if (!error) {
                 error = do_truncate(path->dentry, 0,
                                     ATTR_MTIME|ATTR_CTIME|ATTR_OPEN,
-                                    NULL);
+                                    filp);
         }
         put_write_access(inode);
         return error;
@@ -2063,7 +2064,7 @@ static struct file *finish_open(struct nameidata *nd,
         }
         if (!IS_ERR(filp)) {
                 if (will_truncate) {
-                        error = handle_truncate(&nd->path);
+                        error = handle_truncate(filp);
                         if (error) {
                                 fput(filp);
                                 filp = ERR_PTR(error);
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 28f136d4aae..f6946bb5cb5 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -21,9 +21,7 @@
 #include <asm/uaccess.h>
 #include <asm/byteorder.h>
 
-#include <linux/ncp_fs.h>
-
-#include "ncplib_kernel.h"
+#include "ncp_fs.h"
 
 static void ncp_read_volume_list(struct file *, void *, filldir_t,
                                 struct ncp_cache_control *);
@@ -82,7 +80,7 @@ static int ncp_compare_dentry(const struct dentry *, const struct inode *,
                 unsigned int, const char *, const struct qstr *);
 static int ncp_delete_dentry(const struct dentry *);
 
-static const struct dentry_operations ncp_dentry_operations =
+const struct dentry_operations ncp_dentry_operations =
 {
         .d_revalidate   = ncp_lookup_validate,
         .d_hash         = ncp_hash_dentry,
@@ -90,14 +88,6 @@ static const struct dentry_operations ncp_dentry_operations =
         .d_delete       = ncp_delete_dentry,
 };
 
-const struct dentry_operations ncp_root_dentry_operations =
-{
-        .d_hash         = ncp_hash_dentry,
-        .d_compare      = ncp_compare_dentry,
-        .d_delete       = ncp_delete_dentry,
-};
-
-
 #define ncp_namespace(i)        (NCP_SERVER(i)->name_space[NCP_FINFO(i)->volNumber])
 
 static inline int ncp_preserve_entry_case(struct inode *i, __u32 nscreator)
@@ -309,6 +299,9 @@ ncp_lookup_validate(struct dentry *dentry, struct nameidata *nd)
         int res, val = 0, len;
         __u8 __name[NCP_MAXPATHLEN + 1];
 
+        if (dentry == dentry->d_sb->s_root)
+                return 1;
+
         if (nd->flags & LOOKUP_RCU)
                 return -ECHILD;
 
@@ -637,7 +630,6 @@ ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
                 entry->ino = iunique(dir->i_sb, 2);
                 inode = ncp_iget(dir->i_sb, entry);
                 if (inode) {
-                        d_set_d_op(newdent, &ncp_dentry_operations);
                         d_instantiate(newdent, inode);
                         if (!hashed)
                                 d_rehash(newdent);
@@ -893,7 +885,6 @@ static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, struc
         if (inode) {
                 ncp_new_dentry(dentry);
 add_entry:
-                d_set_d_op(dentry, &ncp_dentry_operations);
                 d_add(dentry, inode);
                 error = 0;
         }
diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c
index cb50aaf981d..0ed65e0c3df 100644
--- a/fs/ncpfs/file.c
+++ b/fs/ncpfs/file.c
@@ -18,8 +18,7 @@
 #include <linux/vmalloc.h>
 #include <linux/sched.h>
 
-#include <linux/ncp_fs.h>
-#include "ncplib_kernel.h"
+#include "ncp_fs.h"
 
 static int ncp_fsync(struct file *file, int datasync)
 {
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index 9b39a5dd413..00a1d1c3d3a 100644
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -31,11 +31,9 @@
 #include <linux/seq_file.h>
 #include <linux/namei.h>
 
-#include <linux/ncp_fs.h>
-
 #include <net/sock.h>
 
-#include "ncplib_kernel.h"
+#include "ncp_fs.h"
 #include "getopt.h"
 
 #define NCP_DEFAULT_FILE_MODE 0600
@@ -544,6 +542,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
         sb->s_blocksize_bits = 10;
         sb->s_magic = NCP_SUPER_MAGIC;
         sb->s_op = &ncp_sops;
+        sb->s_d_op = &ncp_dentry_operations;
         sb->s_bdi = &server->bdi;
 
         server = NCP_SBP(sb);
@@ -723,7 +722,6 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
         sb->s_root = d_alloc_root(root_inode);
         if (!sb->s_root)
                 goto out_no_root;
-        d_set_d_op(sb->s_root, &ncp_root_dentry_operations);
         return 0;
 
 out_no_root:
diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index d40a547e337..790e92a9ec6 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -20,11 +20,9 @@
 #include <linux/vmalloc.h>
 #include <linux/sched.h>
 
-#include <linux/ncp_fs.h>
-
 #include <asm/uaccess.h>
 
-#include "ncplib_kernel.h"
+#include "ncp_fs.h"
 
 /* maximum limit for ncp_objectname_ioctl */
 #define NCP_OBJECT_NAME_MAX_LEN 4096
diff --git a/fs/ncpfs/mmap.c b/fs/ncpfs/mmap.c
index 56f5b3a0e1e..a7c07b44b10 100644
--- a/fs/ncpfs/mmap.c
+++ b/fs/ncpfs/mmap.c
@@ -16,12 +16,12 @@
 #include <linux/mman.h>
 #include <linux/string.h>
 #include <linux/fcntl.h>
-#include <linux/ncp_fs.h>
 
-#include "ncplib_kernel.h"
 #include <asm/uaccess.h>
 #include <asm/system.h>
 
+#include "ncp_fs.h"
+
 /*
  * Fill in the supplied page for mmap
  * XXX: how are we excluding truncate/invalidate here? Maybe need to lock
diff --git a/fs/ncpfs/ncp_fs.h b/fs/ncpfs/ncp_fs.h
new file mode 100644
index 00000000000..31831afe1c3
--- /dev/null
+++ b/fs/ncpfs/ncp_fs.h
@@ -0,0 +1,98 @@
+#include <linux/ncp_fs.h>
+#include "ncp_fs_i.h"
+#include "ncp_fs_sb.h"
+
+/* define because it is easy to change PRINTK to {*}PRINTK */
+#define PRINTK(format, args...) printk(KERN_DEBUG format , ## args)
+
+#undef NCPFS_PARANOIA
+#ifdef NCPFS_PARANOIA
+#define PPRINTK(format, args...) PRINTK(format , ## args)
+#else
+#define PPRINTK(format, args...)
+#endif
+
+#ifndef DEBUG_NCP
+#define DEBUG_NCP 0
+#endif
+#if DEBUG_NCP > 0
+#define DPRINTK(format, args...) PRINTK(format , ## args)
+#else
+#define DPRINTK(format, args...)
+#endif
+#if DEBUG_NCP > 1
+#define DDPRINTK(format, args...) PRINTK(format , ## args)
+#else
+#define DDPRINTK(format, args...)
+#endif
+
+#define NCP_MAX_RPC_TIMEOUT (6*HZ)
+
+
+struct ncp_entry_info {
+        struct nw_info_struct   i;
+        ino_t                   ino;
+        int                     opened;
+        int                     access;
+        unsigned int            volume;
+        __u8                    file_handle[6];
+};
+
+static inline struct ncp_server *NCP_SBP(const struct super_block *sb)
+{
+        return sb->s_fs_info;
+}
+
+#define NCP_SERVER(inode)       NCP_SBP((inode)->i_sb)
+static inline struct ncp_inode_info *NCP_FINFO(const struct inode *inode)
+{
+        return container_of(inode, struct ncp_inode_info, vfs_inode);
+}
+
+/* linux/fs/ncpfs/inode.c */
+int ncp_notify_change(struct dentry *, struct iattr *);
+struct inode *ncp_iget(struct super_block *, struct ncp_entry_info *);
+void ncp_update_inode(struct inode *, struct ncp_entry_info *);
+void ncp_update_inode2(struct inode *, struct ncp_entry_info *);
+
+/* linux/fs/ncpfs/dir.c */
+extern const struct inode_operations ncp_dir_inode_operations;
+extern const struct file_operations ncp_dir_operations;
+extern const struct dentry_operations ncp_dentry_operations;
+int ncp_conn_logged_in(struct super_block *);
+int ncp_date_dos2unix(__le16 time, __le16 date);
+void ncp_date_unix2dos(int unix_date, __le16 * time, __le16 * date);
+
+/* linux/fs/ncpfs/ioctl.c */
+long ncp_ioctl(struct file *, unsigned int, unsigned long);
+long ncp_compat_ioctl(struct file *, unsigned int, unsigned long);
+
+/* linux/fs/ncpfs/sock.c */
+int ncp_request2(struct ncp_server *server, int function,
+        void* reply, int max_reply_size);
+static inline int ncp_request(struct ncp_server *server, int function) {
+        return ncp_request2(server, function, server->packet, server->packet_size);
+}
+int ncp_connect(struct ncp_server *server);
+int ncp_disconnect(struct ncp_server *server);
+void ncp_lock_server(struct ncp_server *server);
+void ncp_unlock_server(struct ncp_server *server);
+
+/* linux/fs/ncpfs/symlink.c */
+#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
+extern const struct address_space_operations ncp_symlink_aops;
+int ncp_symlink(struct inode*, struct dentry*, const char*);
+#endif
+
+/* linux/fs/ncpfs/file.c */
+extern const struct inode_operations ncp_file_inode_operations;
+extern const struct file_operations ncp_file_operations;
+int ncp_make_open(struct inode *, int);
+
+/* linux/fs/ncpfs/mmap.c */
+int ncp_mmap(struct file *, struct vm_area_struct *);
+
+/* linux/fs/ncpfs/ncplib_kernel.c */
+int ncp_make_closed(struct inode *);
+
+#include "ncplib_kernel.h"
diff --git a/include/linux/ncp_fs_i.h b/fs/ncpfs/ncp_fs_i.h
index 4b0bec47784..4b0bec47784 100644
--- a/include/linux/ncp_fs_i.h
+++ b/fs/ncpfs/ncp_fs_i.h
diff --git a/include/linux/ncp_fs_sb.h b/fs/ncpfs/ncp_fs_sb.h
index d64b0e89433..4af803f1351 100644
--- a/include/linux/ncp_fs_sb.h
+++ b/fs/ncpfs/ncp_fs_sb.h
@@ -13,15 +13,30 @@
 #include <linux/net.h>
 #include <linux/mutex.h>
 #include <linux/backing-dev.h>
-
-#ifdef __KERNEL__
-
 #include <linux/workqueue.h>
 
 #define NCP_DEFAULT_OPTIONS 0           /* 2 for packet signatures */
 
 struct sock;
 
+struct ncp_mount_data_kernel {
+        unsigned long    flags;         /* NCP_MOUNT_* flags */
+        unsigned int     int_flags;     /* internal flags */
+#define NCP_IMOUNT_LOGGEDIN_POSSIBLE    0x0001
+        __kernel_uid32_t mounted_uid;   /* Who may umount() this filesystem? */
+        struct pid      *wdog_pid;      /* Who cares for our watchdog packets? */
+        unsigned int     ncp_fd;        /* The socket to the ncp port */
+        unsigned int     time_out;      /* How long should I wait after
+                                           sending a NCP request? */
+        unsigned int     retry_count;   /* And how often should I retry? */
+        unsigned char    mounted_vol[NCP_VOLNAME_LEN + 1];
+        __kernel_uid32_t uid;
+        __kernel_gid32_t gid;
+        __kernel_mode_t  file_mode;
+        __kernel_mode_t  dir_mode;
+        int              info_fd;
+};
+
 struct ncp_server {
 
         struct ncp_mount_data_kernel m; /* Nearly all of the mount data is of
@@ -158,7 +173,4 @@ static inline void ncp_invalidate_conn(struct ncp_server *server)
         server->conn_status |= 0x01;
 }
 
-#endif                          /* __KERNEL__ */
-
 #endif
- 
diff --git a/fs/ncpfs/ncplib_kernel.c b/fs/ncpfs/ncplib_kernel.c
index a95615a0b6a..981a95617fc 100644
--- a/fs/ncpfs/ncplib_kernel.c
+++ b/fs/ncpfs/ncplib_kernel.c
@@ -11,7 +11,7 @@
 
 
 
-#include "ncplib_kernel.h"
+#include "ncp_fs.h"
 
 static inline void assert_server_locked(struct ncp_server *server)
 {
diff --git a/fs/ncpfs/ncplib_kernel.h b/fs/ncpfs/ncplib_kernel.h
index 1220df75ff2..09881e6aa5a 100644
--- a/fs/ncpfs/ncplib_kernel.h
+++ b/fs/ncpfs/ncplib_kernel.h
@@ -32,8 +32,6 @@
 #include <linux/ctype.h>
 #endif /* CONFIG_NCPFS_NLS */
 
-#include <linux/ncp_fs.h>
-
 #define NCP_MIN_SYMLINK_SIZE    8
 #define NCP_MAX_SYMLINK_SIZE    512
 
diff --git a/fs/ncpfs/ncpsign_kernel.c b/fs/ncpfs/ncpsign_kernel.c
index d8b2d7e6910..08907599dcd 100644
--- a/fs/ncpfs/ncpsign_kernel.c
+++ b/fs/ncpfs/ncpsign_kernel.c
@@ -11,6 +11,7 @@
 #include <linux/string.h>
 #include <linux/ncp.h>
 #include <linux/bitops.h>
+#include "ncp_fs.h"
 #include "ncpsign_kernel.h"
 
 /* i386: 32-bit, little endian, handles mis-alignment */
diff --git a/fs/ncpfs/ncpsign_kernel.h b/fs/ncpfs/ncpsign_kernel.h
index 6451a68381c..d9a1438bb1f 100644
--- a/fs/ncpfs/ncpsign_kernel.h
+++ b/fs/ncpfs/ncpsign_kernel.h
@@ -8,8 +8,6 @@
 #ifndef _NCPSIGN_KERNEL_H
 #define _NCPSIGN_KERNEL_H
 
-#include <linux/ncp_fs.h>
-
 #ifdef CONFIG_NCPFS_PACKET_SIGNING
 void __sign_packet(struct ncp_server *server, const char *data, size_t size, __u32 totalsize, void *sign_buff);
 int sign_verify_reply(struct ncp_server *server, const char *data, size_t size, __u32 totalsize, const void *sign_buff);
diff --git a/fs/ncpfs/sock.c b/fs/ncpfs/sock.c
index 668bd267346..3a1587222c8 100644
--- a/fs/ncpfs/sock.c
+++ b/fs/ncpfs/sock.c
@@ -28,7 +28,7 @@
 #include <linux/poll.h>
 #include <linux/file.h>
 
-#include <linux/ncp_fs.h>
+#include "ncp_fs.h"
 
 #include "ncpsign_kernel.h"
 
diff --git a/fs/ncpfs/symlink.c b/fs/ncpfs/symlink.c
index c634fd17b33..661f861d80c 100644
--- a/fs/ncpfs/symlink.c
+++ b/fs/ncpfs/symlink.c
@@ -25,13 +25,11 @@
 
 #include <linux/errno.h>
 #include <linux/fs.h>
-#include <linux/ncp_fs.h>
 #include <linux/time.h>
 #include <linux/slab.h>
 #include <linux/mm.h>
 #include <linux/stat.h>
-#include "ncplib_kernel.h"
-
+#include "ncp_fs.h"
 
 /* these magic numbers must appear in the symlink file -- this makes it a bit
    more resilient against the magic attributes being set on random files. */
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index abe4f0c8dc5..95b081bc9e2 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -439,7 +439,6 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry)
         if (dentry == NULL)
                 return;
 
-        d_set_d_op(dentry, NFS_PROTO(dir)->dentry_ops);
         inode = nfs_fhget(dentry->d_sb, entry->fh, entry->fattr);
         if (IS_ERR(inode))
                 goto out;
@@ -1193,8 +1192,6 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
         if (dentry->d_name.len > NFS_SERVER(dir)->namelen)
                 goto out;
 
-        d_set_d_op(dentry, NFS_PROTO(dir)->dentry_ops);
-
         /*
          * If we're doing an exclusive create, optimize away the lookup
          * but don't hash the dentry.
@@ -1338,7 +1335,6 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
                 res = ERR_PTR(-ENAMETOOLONG);
                 goto out;
         }
-        d_set_d_op(dentry, NFS_PROTO(dir)->dentry_ops);
 
         /* Let vfs_create() deal with O_EXCL. Instantiate, but don't hash
          * the dentry. */
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index 5596c6a2881..b5ffe8fa291 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -119,9 +119,6 @@ struct dentry *nfs_get_root(struct super_block *sb, struct nfs_fh *mntfh)
         }
 
         security_d_instantiate(ret, inode);
-
-        if (ret->d_op == NULL)
-                d_set_d_op(ret, server->nfs_client->rpc_ops->dentry_ops);
 out:
         nfs_free_fattr(fsinfo.fattr);
         return ret;
@@ -227,9 +224,6 @@ struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh)
 
         security_d_instantiate(ret, inode);
 
-        if (ret->d_op == NULL)
-                d_set_d_op(ret, server->nfs_client->rpc_ops->dentry_ops);
-
 out:
         nfs_free_fattr(fattr);
         dprintk("<-- nfs4_get_root()\n");
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 0f9ea73e778..b68c8607770 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2202,6 +2202,7 @@ static int nfs_set_super(struct super_block *s, void *data)
 
         s->s_flags = sb_mntdata->mntflags;
         s->s_fs_info = server;
+        s->s_d_op = server->nfs_client->rpc_ops->dentry_ops;
         ret = set_anon_super(s, server);
         if (ret == 0)
                 server->s_dev = s->s_dev;
diff --git a/fs/ocfs2/export.c b/fs/ocfs2/export.c
index 6adafa57606..5dbc3062b4f 100644
--- a/fs/ocfs2/export.c
+++ b/fs/ocfs2/export.c
@@ -137,9 +137,7 @@ check_gen:
         }
 
         result = d_obtain_alias(inode);
-        if (!IS_ERR(result))
-                d_set_d_op(result, &ocfs2_dentry_ops);
-        else
+        if (IS_ERR(result))
                 mlog_errno(PTR_ERR(result));
 
 bail:
@@ -175,8 +173,6 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
         }
 
         parent = d_obtain_alias(ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0));
-        if (!IS_ERR(parent))
-                d_set_d_op(parent, &ocfs2_dentry_ops);
 
 bail_unlock:
         ocfs2_inode_unlock(dir, 0);
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index bdadbae0909..63e3fca266e 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1995,6 +1995,7 @@ static long ocfs2_fallocate(struct inode *inode, int mode, loff_t offset,
         struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
         struct ocfs2_space_resv sr;
         int change_size = 1;
+        int cmd = OCFS2_IOC_RESVSP64;
 
         if (!ocfs2_writes_unwritten_extents(osb))
                 return -EOPNOTSUPP;
@@ -2005,12 +2006,15 @@ static long ocfs2_fallocate(struct inode *inode, int mode, loff_t offset,
         if (mode & FALLOC_FL_KEEP_SIZE)
                 change_size = 0;
 
+        if (mode & FALLOC_FL_PUNCH_HOLE)
+                cmd = OCFS2_IOC_UNRESVSP64;
+
         sr.l_whence = 0;
         sr.l_start = (s64)offset;
         sr.l_len = (s64)len;
 
-        return __ocfs2_change_file_space(NULL, inode, offset,
-                                         OCFS2_IOC_RESVSP64, &sr, change_size);
+        return __ocfs2_change_file_space(NULL, inode, offset, cmd, &sr,
+                                         change_size);
 }
 
 int ocfs2_check_range_for_refcount(struct inode *inode, loff_t pos,
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 30c52314445..849fb4a2e81 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -147,7 +147,6 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
         spin_unlock(&oi->ip_lock);
 
 bail_add:
-        d_set_d_op(dentry, &ocfs2_dentry_ops);
         ret = d_splice_alias(inode, dentry);
 
         if (inode) {
@@ -415,7 +414,6 @@ static int ocfs2_mknod(struct inode *dir,
                 mlog_errno(status);
                 goto leave;
         }
-        d_set_d_op(dentry, &ocfs2_dentry_ops);
 
         status = ocfs2_add_entry(handle, dentry, inode,
                                  OCFS2_I(inode)->ip_blkno, parent_fe_bh,
@@ -743,7 +741,6 @@ static int ocfs2_link(struct dentry *old_dentry,
         }
 
         ihold(inode);
-        d_set_d_op(dentry, &ocfs2_dentry_ops);
         d_instantiate(dentry, inode);
 
 out_commit:
@@ -1797,7 +1794,6 @@ static int ocfs2_symlink(struct inode *dir,
                 mlog_errno(status);
                 goto bail;
         }
-        d_set_d_op(dentry, &ocfs2_dentry_ops);
 
         status = ocfs2_add_entry(handle, dentry, inode,
                                  le64_to_cpu(fe->i_blkno), parent_fe_bh,
@@ -2462,7 +2458,6 @@ int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
                 goto out_commit;
         }
 
-        d_set_d_op(dentry, &ocfs2_dentry_ops);
         d_instantiate(dentry, inode);
         status = 0;
 out_commit:
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 17ff46fa8a1..06d1f749ca8 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -2097,6 +2097,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
 
         sb->s_fs_info = osb;
         sb->s_op = &ocfs2_sops;
+        sb->s_d_op = &ocfs2_dentry_ops;
         sb->s_export_op = &ocfs2_export_ops;
         sb->s_qcop = &ocfs2_quotactl_ops;
         sb->dq_op = &ocfs2_quota_operations;
diff --git a/fs/open.c b/fs/open.c
index 4197b9ed023..5b6ef7e2859 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -223,7 +223,12 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
                 return -EINVAL;
 
         /* Return error if mode is not supported */
-        if (mode && !(mode & FALLOC_FL_KEEP_SIZE))
+        if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
+                return -EOPNOTSUPP;
+
+        /* Punch hole must have keep size set */
+        if ((mode & FALLOC_FL_PUNCH_HOLE) &&
+            !(mode & FALLOC_FL_KEEP_SIZE))
                 return -EOPNOTSUPP;
 
         if (!(file->f_mode & FMODE_WRITE))
diff --git a/fs/pipe.c b/fs/pipe.c
index 04151e2aee9..e2e95fb46a1 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -1004,7 +1004,6 @@ struct file *create_write_pipe(int flags)
                 goto err_inode;
         path.mnt = mntget(pipe_mnt);
 
-        d_set_d_op(path.dentry, &pipefs_dentry_operations);
         d_instantiate(path.dentry, inode);
 
         err = -ENFILE;
@@ -1266,7 +1265,8 @@ static const struct super_operations pipefs_ops = {
 static struct dentry *pipefs_mount(struct file_system_type *fs_type,
                          int flags, const char *dev_name, void *data)
 {
-        return mount_pseudo(fs_type, "pipe:", &pipefs_ops, PIPEFS_MAGIC);
+        return mount_pseudo(fs_type, "pipe:", &pipefs_ops,
+                        &pipefs_dentry_operations, PIPEFS_MAGIC);
 }
 
 static struct file_system_type pipe_fs_type = {
diff --git a/fs/read_write.c b/fs/read_write.c
index 5d431bacbea..5520f8ad550 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -30,18 +30,9 @@ const struct file_operations generic_ro_fops = {
 
 EXPORT_SYMBOL(generic_ro_fops);
 
-static int
-__negative_fpos_check(struct file *file, loff_t pos, size_t count)
+static inline int unsigned_offsets(struct file *file)
 {
-        /*
-         * pos or pos+count is negative here, check overflow.
-         * too big "count" will be caught in rw_verify_area().
-         */
-        if ((pos < 0) && (pos + count < pos))
-                return -EOVERFLOW;
-        if (file->f_mode & FMODE_UNSIGNED_OFFSET)
-                return 0;
-        return -EINVAL;
+        return file->f_mode & FMODE_UNSIGNED_OFFSET;
 }
 
 /**
@@ -75,7 +66,7 @@ generic_file_llseek_unlocked(struct file *file, loff_t offset, int origin)
                 break;
         }
 
-        if (offset < 0 && __negative_fpos_check(file, offset, 0))
+        if (offset < 0 && !unsigned_offsets(file))
                 return -EINVAL;
         if (offset > inode->i_sb->s_maxbytes)
                 return -EINVAL;
@@ -152,7 +143,7 @@ loff_t default_llseek(struct file *file, loff_t offset, int origin)
                         offset += file->f_pos;
         }
         retval = -EINVAL;
-        if (offset >= 0 || !__negative_fpos_check(file, offset, 0)) {
+        if (offset >= 0 || unsigned_offsets(file)) {
                 if (offset != file->f_pos) {
                         file->f_pos = offset;
                         file->f_version = 0;
@@ -252,9 +243,13 @@ int rw_verify_area(int read_write, struct file *file, loff_t *ppos, size_t count
         if (unlikely((ssize_t) count < 0))
                 return retval;
         pos = *ppos;
-        if (unlikely((pos < 0) || (loff_t) (pos + count) < 0)) {
-                retval = __negative_fpos_check(file, pos, count);
-                if (retval)
+        if (unlikely(pos < 0)) {
+                if (!unsigned_offsets(file))
+                        return retval;
+                if (count >= -pos) /* both values are in 0..LLONG_MAX */
+                        return -EOVERFLOW;
+        } else if (unlikely((loff_t) (pos + count) < 0)) {
+                if (!unsigned_offsets(file))
                         return retval;
         }
 
diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c
index b5e68da2db3..b427b1208c2 100644
--- a/fs/sysv/namei.c
+++ b/fs/sysv/namei.c
@@ -48,7 +48,6 @@ static struct dentry *sysv_lookup(struct inode * dir, struct dentry * dentry, st
         struct inode * inode = NULL;
         ino_t ino;
 
-        d_set_d_op(dentry, dir->i_sb->s_root->d_op);
         if (dentry->d_name.len > SYSV_NAMELEN)
                 return ERR_PTR(-ENAMETOOLONG);
         ino = sysv_inode_by_name(dentry);
diff --git a/fs/sysv/super.c b/fs/sysv/super.c
index 76712aefc4a..f60c196913e 100644
--- a/fs/sysv/super.c
+++ b/fs/sysv/super.c
@@ -332,6 +332,10 @@ static int complete_read_super(struct super_block *sb, int silent, int size)
         sb->s_magic = SYSV_MAGIC_BASE + sbi->s_type;
         /* set up enough so that it can read an inode */
         sb->s_op = &sysv_sops;
+        if (sbi->s_forced_ro)
+                sb->s_flags |= MS_RDONLY;
+        if (sbi->s_truncate)
+                sb->s_d_op = &sysv_dentry_operations;
         root_inode = sysv_iget(sb, SYSV_ROOT_INO);
         if (IS_ERR(root_inode)) {
                 printk("SysV FS: get root inode failed\n");
@@ -343,10 +347,6 @@ static int complete_read_super(struct super_block *sb, int silent, int size)
                 printk("SysV FS: get root dentry failed\n");
                 return 0;
         }
-        if (sbi->s_forced_ro)
-                sb->s_flags |= MS_RDONLY;
-        if (sbi->s_truncate)
-                d_set_d_op(sb->s_root, &sysv_dentry_operations);
         return 1;
 }
 
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 94d5fd6a297..da54403633b 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -516,6 +516,7 @@ xfs_vn_fallocate(
         loff_t          new_size = 0;
         xfs_flock64_t   bf;
         xfs_inode_t     *ip = XFS_I(inode);
+        int             cmd = XFS_IOC_RESVSP;
 
         /* preallocation on directories not yet supported */
         error = -ENODEV;
@@ -528,6 +529,9 @@ xfs_vn_fallocate(
 
         xfs_ilock(ip, XFS_IOLOCK_EXCL);
 
+        if (mode & FALLOC_FL_PUNCH_HOLE)
+                cmd = XFS_IOC_UNRESVSP;
+
         /* check the new inode size is valid before allocating */
         if (!(mode & FALLOC_FL_KEEP_SIZE) &&
             offset + len > i_size_read(inode)) {
@@ -537,8 +541,7 @@ xfs_vn_fallocate(
                         goto out_unlock;
         }
 
-        error = -xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf,
-                                       0, XFS_ATTR_NOLOCK);
+        error = -xfs_change_file_space(ip, cmd, &bf, 0, XFS_ATTR_NOLOCK);
         if (error)
                 goto out_unlock;
 
diff --git a/include/linux/falloc.h b/include/linux/falloc.h
index 3c155107d61..73e0b628e05 100644
--- a/include/linux/falloc.h
+++ b/include/linux/falloc.h
@@ -2,6 +2,7 @@
 #define _FALLOC_H_
 
 #define FALLOC_FL_KEEP_SIZE     0x01 /* default is extend size */
+#define FALLOC_FL_PUNCH_HOLE    0x02 /* de-allocates range */
 
 #ifdef __KERNEL__
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f84d9928bdb..c0701288d20 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1423,6 +1423,7 @@ struct super_block {
          * generic_show_options()
          */
         char __rcu *s_options;
+        const struct dentry_operations *s_d_op; /* default d_op for dentries */
 };
 
 extern struct timespec current_fs_time(struct super_block *sb);
@@ -1834,7 +1835,9 @@ struct super_block *sget(struct file_system_type *type,
                         int (*set)(struct super_block *,void *),
                         void *data);
 extern struct dentry *mount_pseudo(struct file_system_type *, char *,
-        const struct super_operations *ops, unsigned long);
+        const struct super_operations *ops,
+        const struct dentry_operations *dops,
+        unsigned long);
 extern void simple_set_mnt(struct vfsmount *mnt, struct super_block *sb);
 
 static inline void sb_mark_dirty(struct super_block *sb)
diff --git a/include/linux/ncp_fs.h b/include/linux/ncp_fs.h
index 1c27f201c85..e13eefef065 100644
--- a/include/linux/ncp_fs.h
+++ b/include/linux/ncp_fs.h
@@ -143,104 +143,4 @@ struct ncp_nls_ioctl
 #define NCP_MAXPATHLEN 255
 #define NCP_MAXNAMELEN 14
 
-#ifdef __KERNEL__
-
-#include <linux/ncp_fs_i.h>
-#include <linux/ncp_fs_sb.h>
-
-/* define because it is easy to change PRINTK to {*}PRINTK */
-#define PRINTK(format, args...) printk(KERN_DEBUG format , ## args)
-
-#undef NCPFS_PARANOIA
-#ifdef NCPFS_PARANOIA
-#define PPRINTK(format, args...) PRINTK(format , ## args)
-#else
-#define PPRINTK(format, args...)
-#endif
-
-#ifndef DEBUG_NCP
-#define DEBUG_NCP 0
-#endif
-#if DEBUG_NCP > 0
-#define DPRINTK(format, args...) PRINTK(format , ## args)
-#else
-#define DPRINTK(format, args...)
-#endif
-#if DEBUG_NCP > 1
-#define DDPRINTK(format, args...) PRINTK(format , ## args)
-#else
-#define DDPRINTK(format, args...)
-#endif
-
-#define NCP_MAX_RPC_TIMEOUT (6*HZ)
-
-
-struct ncp_entry_info {
-        struct nw_info_struct   i;
-        ino_t                   ino;
-        int                     opened;
-        int                     access;
-        unsigned int            volume;
-        __u8                    file_handle[6];
-};
-
-static inline struct ncp_server *NCP_SBP(const struct super_block *sb)
-{
-        return sb->s_fs_info;
-}
-
-#define NCP_SERVER(inode)       NCP_SBP((inode)->i_sb)
-static inline struct ncp_inode_info *NCP_FINFO(const struct inode *inode)
-{
-        return container_of(inode, struct ncp_inode_info, vfs_inode);
-}
-
-/* linux/fs/ncpfs/inode.c */
-int ncp_notify_change(struct dentry *, struct iattr *);
-struct inode *ncp_iget(struct super_block *, struct ncp_entry_info *);
-void ncp_update_inode(struct inode *, struct ncp_entry_info *);
-void ncp_update_inode2(struct inode *, struct ncp_entry_info *);
-
-/* linux/fs/ncpfs/dir.c */
-extern const struct inode_operations ncp_dir_inode_operations;
-extern const struct file_operations ncp_dir_operations;
-extern const struct dentry_operations ncp_root_dentry_operations;
-int ncp_conn_logged_in(struct super_block *);
-int ncp_date_dos2unix(__le16 time, __le16 date);
-void ncp_date_unix2dos(int unix_date, __le16 * time, __le16 * date);
-
-/* linux/fs/ncpfs/ioctl.c */
-long ncp_ioctl(struct file *, unsigned int, unsigned long);
-long ncp_compat_ioctl(struct file *, unsigned int, unsigned long);
-
-/* linux/fs/ncpfs/sock.c */
-int ncp_request2(struct ncp_server *server, int function,
-        void* reply, int max_reply_size);
-static inline int ncp_request(struct ncp_server *server, int function) {
-        return ncp_request2(server, function, server->packet, server->packet_size);
-}
-int ncp_connect(struct ncp_server *server);
-int ncp_disconnect(struct ncp_server *server);
-void ncp_lock_server(struct ncp_server *server);
-void ncp_unlock_server(struct ncp_server *server);
-
-/* linux/fs/ncpfs/symlink.c */
-#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
-extern const struct address_space_operations ncp_symlink_aops;
-int ncp_symlink(struct inode*, struct dentry*, const char*);
-#endif
-
-/* linux/fs/ncpfs/file.c */
-extern const struct inode_operations ncp_file_inode_operations;
-extern const struct file_operations ncp_file_operations;
-int ncp_make_open(struct inode *, int);
-
-/* linux/fs/ncpfs/mmap.c */
-int ncp_mmap(struct file *, struct vm_area_struct *);
-
-/* linux/fs/ncpfs/ncplib_kernel.c */
-int ncp_make_closed(struct inode *);
-
-#endif                          /* __KERNEL__ */
-
 #endif                          /* _LINUX_NCP_FS_H */
diff --git a/include/linux/ncp_mount.h b/include/linux/ncp_mount.h
index a2b549eb1ec..dfcbea2d889 100644
--- a/include/linux/ncp_mount.h
+++ b/include/linux/ncp_mount.h
@@ -68,26 +68,4 @@ struct ncp_mount_data_v4 {
 
 #define NCP_MOUNT_VERSION_V5    (5)     /* Text only */
 
-#ifdef __KERNEL__
-
-struct ncp_mount_data_kernel {
-        unsigned long    flags;         /* NCP_MOUNT_* flags */
-        unsigned int     int_flags;     /* internal flags */
-#define NCP_IMOUNT_LOGGEDIN_POSSIBLE    0x0001
-        __kernel_uid32_t mounted_uid;   /* Who may umount() this filesystem? */
-        struct pid      *wdog_pid;      /* Who cares for our watchdog packets? */
-        unsigned int     ncp_fd;        /* The socket to the ncp port */
-        unsigned int     time_out;      /* How long should I wait after
-                                           sending a NCP request? */
-        unsigned int     retry_count;   /* And how often should I retry? */
-        unsigned char    mounted_vol[NCP_VOLNAME_LEN + 1];
-        __kernel_uid32_t uid;
-        __kernel_gid32_t gid;
-        __kernel_mode_t  file_mode;
-        __kernel_mode_t  dir_mode;
-        int              info_fd;
-};
-
-#endif /* __KERNEL__ */
-
 #endif
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 51cddc11cd8..5c5f4cc2e99 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -763,8 +763,6 @@ EXPORT_SYMBOL_GPL(cgroup_unlock);
  * -> cgroup_mkdir.
  */
 
-static struct dentry *cgroup_lookup(struct inode *dir,
-                        struct dentry *dentry, struct nameidata *nd);
 static int cgroup_mkdir(struct inode *dir, struct dentry *dentry, int mode);
 static int cgroup_rmdir(struct inode *unused_dir, struct dentry *dentry);
 static int cgroup_populate_dir(struct cgroup *cgrp);
@@ -1451,6 +1449,10 @@ static int cgroup_set_super(struct super_block *sb, void *data)
 
 static int cgroup_get_rootdir(struct super_block *sb)
 {
+        static const struct dentry_operations cgroup_dops = {
+                .d_iput = cgroup_diput,
+        };
+
         struct inode *inode =
                 cgroup_new_inode(S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR, sb);
         struct dentry *dentry;
@@ -1468,6 +1470,8 @@ static int cgroup_get_rootdir(struct super_block *sb)
                 return -ENOMEM;
         }
         sb->s_root = dentry;
+        /* for everything else we want ->d_op set */
+        sb->s_d_op = &cgroup_dops;
         return 0;
 }
 
@@ -2191,7 +2195,7 @@ static const struct file_operations cgroup_file_operations = {
 };
 
 static const struct inode_operations cgroup_dir_inode_operations = {
-        .lookup = cgroup_lookup,
+        .lookup = simple_lookup,
         .mkdir = cgroup_mkdir,
         .rmdir = cgroup_rmdir,
         .rename = cgroup_rename,
@@ -2207,26 +2211,6 @@ static inline struct cftype *__file_cft(struct file *file)
         return __d_cft(file->f_dentry);
 }
 
-static int cgroup_delete_dentry(const struct dentry *dentry)
-{
-        return 1;
-}
-
-static struct dentry *cgroup_lookup(struct inode *dir,
-                        struct dentry *dentry, struct nameidata *nd)
-{
-        static const struct dentry_operations cgroup_dentry_operations = {
-                .d_delete = cgroup_delete_dentry,
-                .d_iput = cgroup_diput,
-        };
-
-        if (dentry->d_name.len > NAME_MAX)
-                return ERR_PTR(-ENAMETOOLONG);
-        d_set_d_op(dentry, &cgroup_dentry_operations);
-        d_add(dentry, NULL);
-        return NULL;
-}
-
 static int cgroup_create_file(struct dentry *dentry, mode_t mode,
                                 struct super_block *sb)
 {
diff --git a/net/socket.c b/net/socket.c
index ccc576a6a50..ac2219f90d5 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -306,20 +306,6 @@ static const struct super_operations sockfs_ops = {
         .statfs         = simple_statfs,
 };
 
-static struct dentry *sockfs_mount(struct file_system_type *fs_type,
-                         int flags, const char *dev_name, void *data)
-{
-        return mount_pseudo(fs_type, "socket:", &sockfs_ops, SOCKFS_MAGIC);
-}
-
-static struct vfsmount *sock_mnt __read_mostly;
-
-static struct file_system_type sock_fs_type = {
-        .name =         "sockfs",
-        .mount =        sockfs_mount,
-        .kill_sb =      kill_anon_super,
-};
-
 /*
  * sockfs_dname() is called from d_path().
  */
@@ -333,6 +319,21 @@ static const struct dentry_operations sockfs_dentry_operations = {
         .d_dname  = sockfs_dname,
 };
 
+static struct dentry *sockfs_mount(struct file_system_type *fs_type,
+                         int flags, const char *dev_name, void *data)
+{
+        return mount_pseudo(fs_type, "socket:", &sockfs_ops,
+                &sockfs_dentry_operations, SOCKFS_MAGIC);
+}
+
+static struct vfsmount *sock_mnt __read_mostly;
+
+static struct file_system_type sock_fs_type = {
+        .name =         "sockfs",
+        .mount =        sockfs_mount,
+        .kill_sb =      kill_anon_super,
+};
+
 /*
  *      Obtains the first available file descriptor and sets it up for use.
  *
@@ -368,7 +369,6 @@ static int sock_alloc_file(struct socket *sock, struct file **f, int flags)
         }
         path.mnt = mntget(sock_mnt);
 
-        d_set_d_op(path.dentry, &sockfs_dentry_operations);
         d_instantiate(path.dentry, SOCK_INODE(sock));
         SOCK_INODE(sock)->i_fop = &socket_file_ops;