Re: [5.14-rc1 regression] 7fe1e79b59ba configfs: implement the .read_iter and .write_iter methods - affects targetcli restore

[Bart Van Assche <bvanassche@acm.org>]

On 7/12/21 12:10 PM, Yanko Kaneti wrote:
> Bisected a problem that I have with targetcli restore to:
> 
> 7fe1e79b59ba configfs: implement the .read_iter and .write_iter methods
> 
> With it reads of /sys/kernel/config/target/dbroot  go on infinitely,
> returning  the config value over and over again.
> 
> e.g.
> 
> $ modprobe target_core_user
> $ head -n 2 /sys/kernel/config/target/dbroot
> /etc/target
> /etc/target
> 
> Don't know if that's a problem with the commit or the target code, but
> could perhaps be affecting other places.

The dbroot show method looks fine to me:

static ssize_t target_core_item_dbroot_show(struct config_item *item,
					    char *page)
{
	return sprintf(page, "%s\n", db_root);
}

Anyway, I can reproduce this behavior. I will take a look at this.

Bart.