//-----------------------------------------------------------------------------
// Populates directory
//-----------------------------------------------------------------------------
static struct dentry * janfs_create_file(struct super_block *sb,
                                         struct dentry *dir,
                                         struct FileDesc desc)
{
    struct dentry* dentry;
    struct inode *i;
    struct qstr hname;

    // Hashed version of the name
    hname.name = desc.name;
    hname.len = strlen (desc.name);
    hname.hash = full_name_hash(desc.name, hname.len);

    // Create dentry and the inode to associate with it
    dentry = d_alloc(dir, &hname);
    if (!dentry)
        goto out_err;

    i = janfs_get_inode(sb, NULL, S_IFREG | 0755, 0);
    if (!i)
        goto out_err_put;

    // Add inode to dentry cache
    d_add(dentry, i);

	printk("janfs_create_file created name[%s], type[%c], size[%lu].\n", desc.name, desc.type, desc.size);

    return dentry;

out_err_put:
    dput(dentry);
out_err:
    return 0;
}

/**
 * tacafs_create_dentry - Crea una entrada al sistema de fitxers
 *
 * Crea el dentry i inode corresponents i els posa a la dentry cache
 * Retorna el dentry generat o l'error corresponent (IS_ERR, PTR_ERR).
 **/
static inline struct dentry *tacafs_create_dentry (struct super_block *sb,
	struct dentry *dir, int inobase, const char *name, int mode, void *data,
	int datasize, struct inode_operations *iops,
	struct dentry_operations *dops, struct file_operations *fops)
{
    struct dentry *dentry, *res;
    struct qstr qname;

    /* Versio amb hash del nom per anar a la dentry cache */
    qname.name = name;
    qname.len = strlen (name);
    qname.hash = full_name_hash(name, qname.len);

    /* Creem el dentry */
    dentry = d_alloc(dir, &qname);
    if (!dentry)
	return ERR_PTR(-ENOMEM);

    /* Creem i omplim l'inode que hi associem */
    res = tacafs_fill_dentry (sb, dentry, inobase, mode, data, datasize,
	    iops, dops, fops);
    if (!res)
	res = dentry;
    else
	dput(dentry);

    return res;
}

/*
 * Lookup or create a dentry from within the filesystem.
 *
 * We need to use this instead of lookup_dentry, as the 
 * directory semaphore lock is already held.
 */
struct dentry *umsdos_lookup_dentry(struct dentry *parent, char *name, int len,
					int real)
{
	struct dentry *result, *dentry;
	struct qstr qstr;

	qstr.name = name;
	qstr.len  = len;
	qstr.hash = full_name_hash(name, len);
	result = d_lookup(parent, &qstr);
	if (!result) {
		result = ERR_PTR(-ENOMEM);
		dentry = d_alloc(parent, &qstr);
		if (dentry) {
			result = real ?
				UMSDOS_rlookup(parent->d_inode, dentry) :
				UMSDOS_lookup(parent->d_inode, dentry);
			if (result)
				goto out_fail;
			return dentry;
		}
	}
out:
	return result;

out_fail:
	dput(dentry);
	goto out;
}

static struct dentry *vperfctr_d_alloc_root(struct inode *inode)
{
	struct qstr this;
	char name[32];
	struct dentry *dentry;

	sprintf(name, "[%lu]", inode->i_ino);
	this.name = name;
	this.len = strlen(name);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
	this.hash = 0;
#else
	this.hash = inode->i_ino; /* will go */
#endif
	dentry = d_alloc(vperfctr_mnt->mnt_sb->s_root, &this);
	if (dentry) {
		dentry->d_op = &vperfctrfs_dentry_operations;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
		/*
		 * We dont want to publish this dentry into global dentry hash table.
		 * We pretend dentry is already hashed, by unsetting DCACHE_UNHASHED
		 * This permits a working /proc/$pid/fd/XXX on vperfctrs
		 */
		dentry->d_flags &= ~DCACHE_UNHASHED;
		d_instantiate(dentry, inode);
#else
		d_add(dentry, inode);
#endif
	}
	return dentry;
}

/**
 * anon_inode_getfd - creates a new file instance by hooking it up to an
 *                    anonymous inode, and a dentry that describe the "class"
 *                    of the file
 *
 * @name:    [in]    name of the "class" of the new file
 * @fops:    [in]    file operations for the new file
 * @priv:    [in]    private data for the new file (will be file's private_data)
 * @flags:   [in]    flags
 *
 * Creates a new file by hooking it on a single inode. This is useful for files
 * that do not need to have a full-fledged inode in order to operate correctly.
 * All the files created with anon_inode_getfile() will share a single inode,
 * hence saving memory and avoiding code duplication for the file/inode/dentry
 * setup.  Returns the newly created file* or an error pointer.
 */
struct file *anon_inode_getfile(const char *name,
                               const struct file_operations *fops,
                               void *priv, int flags)
{
       struct qstr this;
       struct dentry *dentry;
       struct file *file;
       int error;

       if (IS_ERR(anon_inode_inode))
               return ERR_PTR(-ENODEV);

       if (fops->owner && !try_module_get(fops->owner))
               return ERR_PTR(-ENOENT);

       /*
        * Link the inode to a directory entry by creating a unique name
        * using the inode sequence number.
        */
       error = -ENOMEM;
       this.name = name;
       this.len = strlen(name);
       this.hash = 0;
       dentry = d_alloc(anon_inode_mnt->mnt_sb->s_root, &this);
       if (!dentry)
               goto err_module;

       /*
        * We know the anon_inode inode count is always greater than zero,
        * so we can avoid doing an igrab() and we can use an open-coded
        * atomic_inc().
        */
       atomic_inc(&anon_inode_inode->i_count);

       dentry->d_op = &anon_inodefs_dentry_operations;
       /* Do not publish this dentry inside the global dentry hash table */
       dentry->d_flags &= ~DCACHE_UNHASHED;
       d_instantiate(dentry, anon_inode_inode);

       error = -ENFILE;
       file = alloc_file(anon_inode_mnt, dentry,
                         FMODE_READ | FMODE_WRITE, fops);
       if (!file)
               goto err_dput;
       file->f_mapping = anon_inode_inode->i_mapping;

       file->f_pos = 0;
       file->f_flags = O_RDWR | (flags & O_NONBLOCK);
       file->f_version = 0;
       file->private_data = priv;

       return file;

err_dput:
       dput(dentry);
err_module:
       module_put(fops->owner);
       return ERR_PTR(error);
}

int dcache_dir_open(struct inode *inode, struct file *file)
{
	static struct qstr cursor_name = QSTR_INIT(".", 1);

	file->private_data = d_alloc(file->f_path.dentry, &cursor_name);

	return file->private_data ? 0 : -ENOMEM;
}

/**
 * anon_inode_getfd - creates a new file instance by hooking it up to an
 *                    anonymous inode, and a dentry that describe the "class"
 *                    of the file
 *
 * @name:    [in]    name of the "class" of the new file
 * @fops:    [in]    file operations for the new file
 * @priv:    [in]    private data for the new file (will be file's private_data)
 * @flags:   [in]    flags
 *
 * Creates a new file by hooking it on a single inode. This is useful for files
 * that do not need to have a full-fledged inode in order to operate correctly.
 * All the files created with anon_inode_getfile() will share a single inode,
 * hence saving memory and avoiding code duplication for the file/inode/dentry
 * setup.  Returns the newly created file* or an error pointer.
 */
struct file *anon_inode_getfile(const char *name,
				const struct file_operations *fops,
				void *priv, int flags)
{
	struct qstr this;
	struct path path;
	struct file *file;
	int error;

	if (IS_ERR(anon_inode_inode))
		return ERR_PTR(-ENODEV);

	if (fops->owner && !try_module_get(fops->owner))
		return ERR_PTR(-ENOENT);

	/*
	 * Link the inode to a directory entry by creating a unique name
	 * using the inode sequence number.
	 */
	error = -ENOMEM;
	this.name = name;
	this.len = strlen(name);
	this.hash = 0;
	path.dentry = d_alloc(anon_inode_mnt->mnt_sb->s_root, &this);
	if (!path.dentry)
		goto err_module;

	path.mnt = mntget(anon_inode_mnt);
	/*
	 * We know the anon_inode inode count is always greater than zero,
	 * so we can avoid doing an igrab() and we can use an open-coded
	 * atomic_inc().
	 */
	atomic_inc(&anon_inode_inode->i_count);

	path.dentry->d_op = &anon_inodefs_dentry_operations;
	d_instantiate(path.dentry, anon_inode_inode);

	error = -ENFILE;
	file = alloc_file(&path, OPEN_FMODE(flags), fops);
	if (!file)
		goto err_dput;
	file->f_mapping = anon_inode_inode->i_mapping;

	file->f_pos = 0;
	file->f_flags = flags & (O_ACCMODE | O_NONBLOCK);
	file->f_version = 0;
	file->private_data = priv;

	return file;

err_dput:
	path_put(&path);
err_module:
	module_put(fops->owner);
	return ERR_PTR(error);
}

/*
 * Find the dentry that matches "name". If there isn't one, create one. If it's
 * a negative dentry or the uniqueid changed, then drop it and recreate it.
 */
static struct dentry *
cifs_readdir_lookup(struct dentry *parent, struct qstr *name,
		    struct cifs_fattr *fattr)
{
	struct dentry *dentry, *alias;
	struct inode *inode;
	struct super_block *sb = parent->d_inode->i_sb;

	cFYI(1, "For %s", name->name);

	if (parent->d_op && parent->d_op->d_hash)
		parent->d_op->d_hash(parent, parent->d_inode, name);
	else
		name->hash = full_name_hash(name->name, name->len);

	dentry = d_lookup(parent, name);
	if (dentry) {
		inode = dentry->d_inode;
		/* update inode in place if i_ino didn't change */
		if (inode && CIFS_I(inode)->uniqueid == fattr->cf_uniqueid) {
			cifs_fattr_to_inode(inode, fattr);
			return dentry;
		}
		d_drop(dentry);
		dput(dentry);
	}

	/*
	 * If we know that the inode will need to be revalidated immediately,
	 * then don't create a new dentry for it. We'll end up doing an on
	 * the wire call either way and this spares us an invalidation.
	 */
	if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL)
		return NULL;

	dentry = d_alloc(parent, name);
	if (dentry == NULL)
		return NULL;

	inode = cifs_iget(sb, fattr);
	if (!inode) {
		dput(dentry);
		return NULL;
	}

	alias = d_materialise_unique(dentry, inode);
	if (alias != NULL) {
		dput(dentry);
		if (IS_ERR(alias))
			return NULL;
		dentry = alias;
	}

	return dentry;
}

/*
 * Attempt to preload the dcache with the results from the FIND_FIRST/NEXT
 *
 * Find the dentry that matches "name". If there isn't one, create one. If it's
 * a negative dentry or the uniqueid changed, then drop it and recreate it.
 */
static void
cifs_prime_dcache(struct dentry *parent, struct qstr *name,
		    struct cifs_fattr *fattr)
{
	struct dentry *dentry, *alias;
	struct inode *inode;
	struct super_block *sb = parent->d_inode->i_sb;
	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);

	cFYI(1, "%s: for %s", __func__, name->name);

	dentry = d_hash_and_lookup(parent, name);
	if (unlikely(IS_ERR(dentry)))
		return;

	if (dentry) {
		int err;

		inode = dentry->d_inode;
		if (inode) {
			/*
			 * If we're generating inode numbers, then we don't
			 * want to clobber the existing one with the one that
			 * the readdir code created.
			 */
			if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM))
				fattr->cf_uniqueid = CIFS_I(inode)->uniqueid;

			/* update inode in place if i_ino didn't change */
			if (CIFS_I(inode)->uniqueid == fattr->cf_uniqueid) {
				cifs_fattr_to_inode(inode, fattr);
				goto out;
			}
		}
		err = d_invalidate(dentry);
		dput(dentry);
		if (err)
			return;
	}

	dentry = d_alloc(parent, name);
	if (!dentry)
		return;

	inode = cifs_iget(sb, fattr);
	if (!inode)
		goto out;

	alias = d_materialise_unique(dentry, inode);
	if (alias && !IS_ERR(alias))
		dput(alias);
out:
	dput(dentry);
}

struct sysfs_dirent *sysfs_create_shadow_dir(struct kobject *kobj)
{
	struct sysfs_dirent *parent_sd = kobj->sd->s_parent;
	struct dentry *dir, *parent, *shadow;
	struct inode *inode;
	struct sysfs_dirent *sd;
	struct sysfs_addrm_cxt acxt;

	dir = sysfs_get_dentry(kobj->sd);
	if (IS_ERR(dir)) {
		sd = (void *)dir;
		goto out;
	}
	parent = dir->d_parent;

	inode = dir->d_inode;
	sd = ERR_PTR(-EINVAL);
	if (!sysfs_is_shadowed_inode(inode))
		goto out_dput;

	shadow = d_alloc(parent, &dir->d_name);
	if (!shadow)
		goto nomem;

	sd = sysfs_new_dirent("_SHADOW_", inode->i_mode, SYSFS_DIR);
	if (!sd)
		goto nomem;
	sd->s_elem.dir.kobj = kobj;

	sysfs_addrm_start(&acxt, parent_sd);

	/* add but don't link into children list */
	sysfs_add_one(&acxt, sd);

	/* attach and instantiate dentry */
	sysfs_attach_dentry(sd, shadow);
	d_instantiate(shadow, igrab(inode));
	inc_nlink(inode);	/* tj: synchronization? */

	sysfs_addrm_finish(&acxt);

	dget(shadow);		/* Extra count - pin the dentry in core */

	goto out_dput;

 nomem:
	dput(shadow);
	sd = ERR_PTR(-ENOMEM);
 out_dput:
	dput(dir);
 out:
	return sd;
}

/*
 * shmem_file_setup - get an unlinked file living in tmpfs
 *
 * @name: name for dentry (to be seen in /proc/<pid>/maps
 * @size: size to be set for the file
 *
 */
struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags)
{
	int error;
	struct file *file;
	struct inode *inode;
	struct dentry *dentry, *root;
	struct qstr this;

	if (IS_ERR(shm_mnt))
		return (void *)shm_mnt;

	error = -ENOMEM;
	this.name = name;
	this.len = strlen(name);
	this.hash = 0; /* will go */
	root = shm_mnt->mnt_root;
	dentry = d_alloc(root, &this);
	if (!dentry)
		goto put_memory;

	error = -ENFILE;
	file = get_empty_filp();
	if (!file)
		goto put_dentry;

	error = -ENOSPC;
	inode = ramfs_get_inode(root->d_sb, S_IFREG | S_IRWXUGO, 0);
	if (!inode)
		goto close_file;

	d_instantiate(dentry, inode);
	inode->i_nlink = 0;	/* It is unlinked */

	file->f_path.mnt = mntget(shm_mnt);
	file->f_path.dentry = dentry;
	file->f_mapping = inode->i_mapping;
	file->f_op = &ramfs_file_operations;
	file->f_mode = FMODE_WRITE | FMODE_READ;

	/* notify everyone as to the change of file size */
	error = do_truncate(dentry, size, 0, file);
	if (error < 0)
		goto close_file;

	return file;

close_file:
	put_filp(file);
put_dentry:
	dput(dentry);
put_memory:
	return ERR_PTR(error);
}

/* Might check in the future if inode number changed so we can rehash inode */
static int construct_dentry(struct qstr *qstring, struct file *file,
	struct inode **ptmp_inode, struct dentry **pnew_dentry)
{
	struct dentry *tmp_dentry;
	struct cifs_sb_info *cifs_sb;
	struct cifsTconInfo *pTcon;
	int rc = 0;

	cFYI(1, ("For %s", qstring->name));
	cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
	pTcon = cifs_sb->tcon;

	qstring->hash = full_name_hash(qstring->name, qstring->len);
	tmp_dentry = d_lookup(file->f_path.dentry, qstring);
	if (tmp_dentry) {
		cFYI(0, ("existing dentry with inode 0x%p",
			 tmp_dentry->d_inode));
		*ptmp_inode = tmp_dentry->d_inode;
/* BB overwrite old name? i.e. tmp_dentry->d_name and tmp_dentry->d_name.len??*/
		if (*ptmp_inode == NULL) {
			*ptmp_inode = new_inode(file->f_path.dentry->d_sb);
			if (*ptmp_inode == NULL)
				return rc;
			rc = 1;
		}
		if (file->f_path.dentry->d_sb->s_flags & MS_NOATIME)
			(*ptmp_inode)->i_flags |= S_NOATIME | S_NOCMTIME;
	} else {
		tmp_dentry = d_alloc(file->f_path.dentry, qstring);
		if (tmp_dentry == NULL) {
			cERROR(1, ("Failed allocating dentry"));
			*ptmp_inode = NULL;
			return rc;
		}

		*ptmp_inode = new_inode(file->f_path.dentry->d_sb);
		if (pTcon->nocase)
			tmp_dentry->d_op = &cifs_ci_dentry_ops;
		else
			tmp_dentry->d_op = &cifs_dentry_ops;
		if (*ptmp_inode == NULL)
			return rc;
		if (file->f_path.dentry->d_sb->s_flags & MS_NOATIME)
			(*ptmp_inode)->i_flags |= S_NOATIME | S_NOCMTIME;
		rc = 2;
	}

	tmp_dentry->d_time = jiffies;
	*pnew_dentry = tmp_dentry;
	return rc;
}

/* this routine links an IS_ROOT dentry into the dcache tree.  It gains "parent"
 * as a parent and "name" as a name
 * It should possibly go in dcache.c
 */
int d_splice(struct dentry *target, struct dentry *parent, struct qstr *name)
{
	struct dentry *tdentry;
#ifdef NFSD_PARANOIA
	if (!IS_ROOT(target))
		printk("nfsd: d_splice with no-root target: %s/%s\n", parent->d_name.name, name->name);
	if (!(target->d_flags & DCACHE_NFSD_DISCONNECTED))
		printk("nfsd: d_splice with non-DISCONNECTED target: %s/%s\n", parent->d_name.name, name->name);
#endif
	tdentry = d_alloc(parent, name);
	if (tdentry == NULL)
		return -ENOMEM;
	d_move(target, tdentry);

	/* tdentry will have been made a "child" of target (the parent of target)
	 * make it an IS_ROOT instead
	 */
	spin_lock(&dcache_lock);
	list_del_init(&tdentry->d_child);
	tdentry->d_parent = tdentry;
	spin_unlock(&dcache_lock);
	d_rehash(target);
	dput(tdentry);

	/* if parent is properly connected, then we can assert that
	 * the children are connected, but it must be a singluar (non-forking)
	 * branch
	 */
	if (!(parent->d_flags & DCACHE_NFSD_DISCONNECTED)) {
		while (target) {
			target->d_flags &= ~DCACHE_NFSD_DISCONNECTED;
			parent = target;
			spin_lock(&dcache_lock);
			if (list_empty(&parent->d_subdirs))
				target = NULL;
			else {
				target = list_entry(parent->d_subdirs.next, struct dentry, d_child);
#ifdef NFSD_PARANOIA
				/* must be only child */
				if (target->d_child.next != &parent->d_subdirs
				    || target->d_child.prev != &parent->d_subdirs)
					printk("nfsd: d_splice found non-singular disconnected branch: %s/%s\n",
					       parent->d_name.name, target->d_name.name);
#endif
			}
			spin_unlock(&dcache_lock);
		}
	}
	return 0;
}

int dcache_dir_open(struct inode *inode, struct file *file)
{
	static struct qstr cursor_name = {.len = 1, .name = "."};

	file->private_data = d_alloc(file->f_path.dentry, &cursor_name);

	return file->private_data ? 0 : -ENOMEM;
}

int dcache_dir_close(struct inode *inode, struct file *file)
{
	dput(file->private_data);
	return 0;
}

/* Might check in the future if inode number changed so we can rehash inode */
static int
construct_dentry(struct qstr *qstring, struct file *file,
		 struct inode **ptmp_inode, struct dentry **pnew_dentry,
		 __u64 *inum)
{
	struct dentry *tmp_dentry = NULL;
	struct super_block *sb = file->f_path.dentry->d_sb;
	int rc = 0;

	cFYI(1, ("For %s", qstring->name));

	qstring->hash = full_name_hash(qstring->name, qstring->len);
	tmp_dentry = d_lookup(file->f_path.dentry, qstring);
	if (tmp_dentry) {
		/* BB: overwrite old name? i.e. tmp_dentry->d_name and
		 * tmp_dentry->d_name.len??
		 */
		cFYI(0, ("existing dentry with inode 0x%p",
			 tmp_dentry->d_inode));
		*ptmp_inode = tmp_dentry->d_inode;
		if (*ptmp_inode == NULL) {
			*ptmp_inode = cifs_new_inode(sb, inum);
			if (*ptmp_inode == NULL)
				return rc;
			rc = 1;
		}
	} else {
		tmp_dentry = d_alloc(file->f_path.dentry, qstring);
		if (tmp_dentry == NULL) {
			cERROR(1, ("Failed allocating dentry"));
			*ptmp_inode = NULL;
			return rc;
		}

		if (CIFS_SB(sb)->tcon->nocase)
			tmp_dentry->d_op = &cifs_ci_dentry_ops;
		else
			tmp_dentry->d_op = &cifs_dentry_ops;

		*ptmp_inode = cifs_new_inode(sb, inum);
		if (*ptmp_inode == NULL)
			return rc;
		rc = 2;
	}

	tmp_dentry->d_time = jiffies;
	*pnew_dentry = tmp_dentry;
	return rc;
}

static struct dentry *
cifs_readdir_lookup(struct dentry *parent, struct qstr *name,
		    struct cifs_fattr *fattr)
{
	struct dentry *dentry, *alias;
	struct inode *inode;
	struct super_block *sb = parent->d_inode->i_sb;

	cFYI(1, "For %s", name->name);

	if (parent->d_op && parent->d_op->d_hash)
		parent->d_op->d_hash(parent, parent->d_inode, name);
	else
		name->hash = full_name_hash(name->name, name->len);

	dentry = d_lookup(parent, name);
	if (dentry) {
		
		inode = dentry->d_inode;
		/* update inode in place if i_ino didn't change */
		if (inode && CIFS_I(inode)->uniqueid == fattr->cf_uniqueid) {
			cifs_fattr_to_inode(inode, fattr);
 			return dentry;
		}
		d_drop(dentry);
		dput(dentry);
	}

	dentry = d_alloc(parent, name);
	if (dentry == NULL)
		return NULL;

	inode = cifs_iget(sb, fattr);
	if (!inode) {
		dput(dentry);
		return NULL;
	}

	alias = d_materialise_unique(dentry, inode);
	if (alias != NULL) {
		dput(dentry);
		if (IS_ERR(alias))
			return NULL;
		dentry = alias;
	}

	return dentry;
}

static struct dentry *vperfctr_d_alloc_root(struct inode *inode)
{
	struct qstr this;
	char name[32];
	struct dentry *dentry;

	sprintf(name, "[%lu]", inode->i_ino);
	this.name = name;
	this.len = strlen(name);
	this.hash = inode->i_ino; /* will go */
	dentry = d_alloc(vperfctr_mnt->mnt_sb->s_root, &this);
	if (dentry) {
		dentry->d_op = &vperfctrfs_dentry_operations;
		d_add(dentry, inode);
	}
	return dentry;
}

/* Might check in the future if inode number changed so we can rehash inode */
static int construct_dentry(struct qstr *qstring, struct file *file,
	struct inode **ptmp_inode, struct dentry **pnew_dentry)
{
	struct dentry *tmp_dentry;
	struct cifs_sb_info *cifs_sb;
	struct cifsTconInfo *pTcon;
	int rc = 0;

	cFYI(1, ("For %s", qstring->name));
	cifs_sb = CIFS_SB(file->f_dentry->d_sb);
	pTcon = cifs_sb->tcon;

	qstring->hash = full_name_hash(qstring->name, qstring->len);
	tmp_dentry = d_lookup(file->f_dentry, qstring);
	if (tmp_dentry) {
		cFYI(0, ("existing dentry with inode 0x%p", tmp_dentry->d_inode));
		*ptmp_inode = tmp_dentry->d_inode;
/* BB overwrite old name? i.e. tmp_dentry->d_name and tmp_dentry->d_name.len??*/
		if(*ptmp_inode == NULL) {
			*ptmp_inode = new_inode(file->f_dentry->d_sb);
			if(*ptmp_inode == NULL)
				return rc;
			rc = 1;
			d_instantiate(tmp_dentry, *ptmp_inode);
		}
	} else {
		tmp_dentry = d_alloc(file->f_dentry, qstring);
		if(tmp_dentry == NULL) {
			cERROR(1,("Failed allocating dentry"));
			*ptmp_inode = NULL;
			return rc;
		}

		*ptmp_inode = new_inode(file->f_dentry->d_sb);
		tmp_dentry->d_op = &cifs_dentry_ops;
		if(*ptmp_inode == NULL)
			return rc;
		rc = 1;
		d_instantiate(tmp_dentry, *ptmp_inode);
		d_rehash(tmp_dentry);
	}

	tmp_dentry->d_time = jiffies;
	*pnew_dentry = tmp_dentry;
	return rc;
}

/*
 * Find the dentry that matches "name". If there isn't one, create one. If it's
 * a negative dentry or the uniqueid changed, then drop it and recreate it.
 */
static struct dentry *
cifs_readdir_lookup(struct dentry *parent, struct qstr *name,
		    struct cifs_fattr *fattr)
{
	struct dentry *dentry, *alias;
	struct inode *inode;
	struct super_block *sb = parent->d_inode->i_sb;

	cFYI(1, ("For %s", name->name));

	dentry = d_lookup(parent, name);
	if (dentry) {
		/* FIXME: check for inode number changes? */
		if (dentry->d_inode != NULL)
			return dentry;
		d_drop(dentry);
		dput(dentry);
	}

	dentry = d_alloc(parent, name);
	if (dentry == NULL)
		return NULL;

	inode = cifs_iget(sb, fattr);
	if (!inode) {
		dput(dentry);
		return NULL;
	}

	if (CIFS_SB(sb)->tcon->nocase)
		dentry->d_op = &cifs_ci_dentry_ops;
	else
		dentry->d_op = &cifs_dentry_ops;

	alias = d_materialise_unique(dentry, inode);
	if (alias != NULL) {
		dput(dentry);
		if (IS_ERR(alias))
			return NULL;
		dentry = alias;
	}

	return dentry;
}

static
struct super_block *
perfctr_get_sb_pseudo(struct file_system_type *fs_type, char *name,
	struct super_operations *ops, unsigned long magic)
{
	struct super_block *s = sget(fs_type, NULL, set_anon_super, NULL);
	static struct super_operations default_ops = {.statfs = simple_statfs};
	struct dentry *dentry;
	struct inode *root;
	struct qstr d_name = {.name = name, .len = strlen(name)};

	if (IS_ERR(s))
		return s;

	s->s_flags = MS_NOUSER;
	s->s_maxbytes = ~0ULL;
	s->s_blocksize = 1024;
	s->s_blocksize_bits = 10;
	s->s_magic = magic;
	s->s_op = ops ? ops : &default_ops;
	root = new_inode(s);
	if (!root)
		goto Enomem;
	root->i_mode = S_IFDIR | S_IRUSR | S_IWUSR;
	root->i_uid = root->i_gid = 0;
	root->i_atime = root->i_mtime = root->i_ctime = CURRENT_TIME;
	dentry = d_alloc(NULL, &d_name);
	if (!dentry) {
		iput(root);
		goto Enomem;
	}
	dentry->d_sb = s;
	dentry->d_parent = dentry;
	d_instantiate(dentry, root);
	s->s_root = dentry;
	s->s_flags |= MS_ACTIVE;
	return s;

Enomem:
	up_write(&s->s_umount);
	deactivate_super(s);
	return ERR_PTR(-ENOMEM);
}