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Message-ID: <20210315201331.GA2577561@casper.infradead.org>
Date:   Mon, 15 Mar 2021 20:13:31 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Matteo Croce <mcroce@...ux.microsoft.com>
Cc:     linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Lennart Poettering <lennart@...ttering.net>,
        Luca Boccassi <bluca@...ian.org>, Jens Axboe <axboe@...nel.dk>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Damien Le Moal <damien.lemoal@....com>,
        Tejun Heo <tj@...nel.org>,
        Javier González <javier@...igon.com>,
        Niklas Cassel <niklas.cassel@....com>,
        Johannes Thumshirn <johannes.thumshirn@....com>,
        Hannes Reinecke <hare@...e.de>,
        Ajay Joshi <ajay.joshi@....com>,
        Christoph Hellwig <hch@....de>,
        Matias Bjorling <matias.bjorling@....com>,
        Hans Holmberg <hans.holmberg@....com>,
        Dmitry Fomichev <dmitry.fomichev@....com>,
        Keith Busch <kbusch@...nel.org>,
        "Dmitry V. Levin" <ldv@...linux.org>
Subject: Re: [PATCH -next 2/5] block: add ioctl to read the disk sequence
 number

On Mon, Mar 15, 2021 at 09:02:39PM +0100, Matteo Croce wrote:
> +++ b/include/uapi/linux/fs.h
> @@ -184,6 +184,7 @@ struct fsxattr {
>  #define BLKSECDISCARD _IO(0x12,125)
>  #define BLKROTATIONAL _IO(0x12,126)
>  #define BLKZEROOUT _IO(0x12,127)
> +#define BLKGETDISKSEQ _IOR(0x12,128,__u64)
>  /*
>   * A jump here: 130-131 are reserved for zoned block devices
>   * (see uapi/linux/blkzoned.h)

Not your bug, but this is now 130-136.

+cc all the people who signed off on the commits that added those ioctl
numbers without updating this comment.  Perhaps one of them will figure
out how to stop this happening in future.

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