[Drbd-dev] [PATCH 23/23] block: remove the discard_zeroes_data flag

[hch at lst.de]

On Tue, Mar 28, 2017 at 05:00:48PM +0000, Bart Van Assche wrote:
> 
> It seems to me like the documentation in Documentation/ABI/testing/sysfs-block
> and the above code are not in sync. I think the above code will cause reading
> from the discard_zeroes_data attribute to return an empty string ("") instead
> of "0\n".

Thanks, fine with me.

> 
> BTW, my personal preference is to remove this attribute entirely because keeping
> it will cause confusion, no matter how well we document the behavior of this
> attribute.

Jens, any opinion?  I'd like to remove it too, but I fear it might
break things.  We could deprecate it first with a warning when read
and then remove it a few releases down the road.