Re: [PATCH v2] documentation: fix Generic Block Device Capability

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On Mon, Jan 16, 2023 at 07:14:41PM +0100, Fabio Fantoni wrote:
> Il 16/01/2023 18:53, Christoph Hellwig ha scritto:
> > On Tue, Jan 10, 2023 at 02:21:04PM +0100, Fabio Fantoni wrote:
> > > - * ``GENHD_FL_REMOVABLE``: indicates that the block device gives access to
> > > + * ``GENHD_FL_REMOVABLE`` (0x01): indicates that the block device gives access to
> > The numberic values really do not belong into the documentation.  They
> > are just implementation details.
> > 
> Thanks for reply, if values are not into the documentation see from
> /sys/block/<disk>/capability output what flags are enabled will require look
> to source code of include/linux/blkdev.h and
> Documentation/block/capability.rst will be less useful, or I'm wrong?

Urgg.  I think this file is generally just a bad idea.  The flags are
kernel internal and not isolated from userspace.  It seems nothing broke
with the various renumbering lately, but we need to isolate it from
the implementation details.  And if it really should be a user API
we need a text version of it.



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