RE: [PATCH] fs/configfs: allow to create groups on demand

[Andrzej Pietrasiewicz <andrzej.p@samsung.com>]

On Thursday, November 29, 2012 5:41 PM Sebastian Andrzej Siewior wrote:
> Subject: [PATCH] fs/configfs: allow to create groups on demand
> 
> This patch adds a function add a group to an existing one and its
> counterart. The newly created group behaves as it would be created via
> default_groups[] which means the user can't rmdir it.
> This should be used by the upcomming USB gadget interface in order to
> add the currently available UDCs as a child of the UDC node. The UDC
> itself will appear once the hardware driver is loaded and can appear
> later.

Yeah, this mode of operation will be required.

> 
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> ---
>  fs/configfs/dir.c        |   63 ++++++++++++++++++++++++++++++++++-------
> -----
>  include/linux/configfs.h |    4 +++
>  2 files changed, 51 insertions(+), 16 deletions(-)
> 
> diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
> index 7414ae2..50ee2bd 100644
> --- a/fs/configfs/dir.c
> +++ b/fs/configfs/dir.c
> @@ -1663,19 +1663,13 @@ const struct file_operations
> configfs_dir_operations = {
>  	.readdir	= configfs_readdir,
>  };
> 
> -int configfs_register_subsystem(struct configfs_subsystem *subsys)
> +static int __create_group(struct config_group *group, struct dentry
*root)
>  {

Can __create_group be also used in create_default_group?


Andrzej