Re: [PATCH 2/2] block: create ioctl to discard-or-zeroout a range of blocks

On Thu, Mar 17, 2016 at 10:50 AM, Ric Wheeler [off-list ref] wrote:

quoted

That argues against worrying about this all in the kernel unless there
are other users.

Just a note, when Greg says "user space solution", Ceph is looking at
writing directly to raw block devices which is kind of a through back to
early enterprise database trends.

Right, I understand. But that makes it kind of pointless to worry
about NO_HIDE_STALE, since it wouldn't get used anyway. The issues
with filesystem preallocation just don't exist.

Of course, if there are other possible users, we should keep this on
the table, but ...

                 Linus