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To: Warner Losh <imp@bsdimp.com>
cc: Alan Somers <asomers@freebsd.org>, FreeBSD FS <freebsd-fs@freebsd.org>,
 FreeBSD Current <freebsd-current@freebsd.org>,
 "freebsd-arch@freebsd.org" <freebsd-arch@freebsd.org>
Subject: Re: Hole-punching, TRIM, etc
In-reply-to: <CANCZdfp5UDcH-SLDVvvhkB0dTnhuP0tZ8YT0tUJkF8egAZgYuA@mail.gmail.com>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
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Date: Tue, 13 Nov 2018 22:59:44 +0000
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--------
In message <CANCZdfp5UDcH-SLDVvvhkB0dTnhuP0tZ8YT0tUJkF8egAZgYuA@mail.gmail=
.com>
, Warner Losh writes:

>On a raw device it would be translated into a BIO_DELETE command directly=
,
>correct?

We already have ioctl(DIOCGDELETE) for that.  newfs(8) uses it.

-- =

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    =

Never attribute to malice what can adequately be explained by incompetence=
.