linux-kernel - Re: [PATCH -next 2/5] block: add ioctl to read the disk sequence number

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Message-ID: <CAFnufp3gLfjKPsq4YaG6XtbsfJHUfVdJ65gmaZ-miNeUE8TLeA@mail.gmail.com>
Date:   Mon, 15 Mar 2021 21:34:26 +0100
From:   Matteo Croce <mcroce@...ux.microsoft.com>
To:     Matthew Wilcox <willy@...radead.org>
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 9:13 PM Matthew Wilcox <willy@...radead.org> wrote:
>
> 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.

Note taken, thanks!

-- 
per aspera ad upstream