Re: [PATCH 3/3] block: implement (some of) fallocate for block devices

[Linus Torvalds]

On Fri, Mar 4, 2016 at 4:56 PM, Darrick J. Wong <darrick.wong@xxxxxxxxxx> wrote:
> +       /* Only punch if the device can do zeroing discard. */
> +       if ((mode & FALLOC_FL_PUNCH_HOLE) &&
> +           (!blk_queue_discard(q) || !q->limits.discard_zeroes_data))
> +               return -EOPNOTSUPP;

I'm ok with this, but suspect that some users would prefer to just
turn this into ZERO_RANGE silently.

Comments from people who would be expected to use this?

            Linus