Re: kdbus: add node and filesystem implementation

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Hi

On Fri, Nov 21, 2014 at 4:55 PM, Sasha Levin <sasha.levin@xxxxxxxxxx> wrote:
> On 11/21/2014 12:02 AM, Greg Kroah-Hartman wrote:
>> +static struct dentry *fs_dir_iop_lookup(struct inode *dir,
>> +                                     struct dentry *dentry,
>> +                                     unsigned int flags)
>> +{
>> +     struct dentry *dnew = NULL;
>> +     struct kdbus_node *parent;
>> +     struct kdbus_node *node;
>> +     struct inode *inode;
>> +
>> +     parent = kdbus_node_from_dentry(dentry->d_parent);
>> +     if (!kdbus_node_acquire(parent))
>> +             return NULL;
>> +
>> +     /* returns reference to _acquired_ child node */
>> +     node = kdbus_node_find_child(parent, dentry->d_name.name);
>> +     if (node) {
>> +             dentry->d_fsdata = node;
>> +             inode = fs_inode_get(dir->i_sb, node);
>> +             if (IS_ERR(inode))
>> +                     dnew = ERR_CAST(inode);
>> +             else
>> +                     dnew = d_materialise_unique(dentry, inode);
>
> d_materialise_unique() is gone in Al's fs tree:
>
> [mandatory]
>         d_materialise_unique() is gone; d_splice_alias() does everything you
>         need now.  Remember that they have opposite orders of arguments ;-/

That was actually pushed after we prepared v2, so I haven't seen it
yet. I now rebased on top of vfs.git#for-next, with
d_materialise_unique() -> d_splice_alias(). Thanks for the hint!

> Maybe it's worth basing your git tree on top of Al's rather than a random
> -rc, since it's now a filesystem?

Sure, sounds good.

Thanks
David
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