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Subject: Re: [PATCH 4/4] loop: Add LOOP_SET_FD_AND_STATUS ioctl.
To:     Martijn Coenen <maco@android.com>, axboe@kernel.dk, hch@lst.de,
        ming.lei@redhat.com
Cc:     narayan@google.com, zezeozue@google.com, kernel-team@android.com,
        linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
        maco@google.com, Chaitanya.Kulkarni@wdc.com
References: <20200420080409.111693-1-maco@android.com>
 <20200420080409.111693-5-maco@android.com>
From:   Bart Van Assche <bvanassche@acm.org>
Message-ID: <9eaa4dc8-cd8f-a4e9-e83d-f49f8b00ec0e@acm.org>
Date:   Wed, 22 Apr 2020 08:10:56 -0700
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On 4/20/20 1:04 AM, Martijn Coenen wrote:
> diff --git a/include/uapi/linux/loop.h b/include/uapi/linux/loop.h
> index 080a8df134ef..fcc9a693b588 100644
> --- a/include/uapi/linux/loop.h
> +++ b/include/uapi/linux/loop.h
> @@ -60,6 +60,11 @@ struct loop_info64 {
>   	__u64		   lo_init[2];
>   };
>   
> +struct loop_fd_and_status {
> +	struct loop_info64	info;
> +	__u32			fd;
> +};
> +
>   /*
>    * Loop filter types
>    */
> @@ -90,6 +95,7 @@ struct loop_info64 {
>   #define LOOP_SET_CAPACITY	0x4C07
>   #define LOOP_SET_DIRECT_IO	0x4C08
>   #define LOOP_SET_BLOCK_SIZE	0x4C09
> +#define LOOP_SET_FD_AND_STATUS	0x4C0A
>   
>   /* /dev/loop-control interface */
>   #define LOOP_CTL_ADD		0x4C80

Should linux-api be Cc'ed for this patch or the entire patch series? 
 From https://www.kernel.org/doc/man-pages/linux-api-ml.html: "Among 
other things, a primary goal of the list is to help answer the question: 
How do we even know when an interface has been added or changed?".

Thanks,

Bart.