From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <BATV+250fd2a736c995bcc4cb+4957+infradead.org+hch@bombadil.srs.infradead.org>
From: Christoph Hellwig <hch@lst.de>
To: tj@kernel.org,
	martin.petersen@oracle.com,
	axboe@kernel.dk
Cc: linux-ide@vger.kernel.org,
	linux-scsi@vger.kernel.org,
	linux-block@vger.kernel.org
Subject: support ranges TRIM for libata
Date: Mon, 20 Mar 2017 16:43:12 -0400
Message-Id: <20170320204319.12628-1-hch@lst.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
List-ID: <linux-block@vger.kernel.org>

This series implements rangeѕ discard for ATA SSDs.  Compared to the
initial NVMe support there are two things that complicate the ATA
support:

 - ATA only suports 16-bit long ranges
 - the whole mess of generating a SCSI command first and then
   translating it to an ATA one.

This series adds support for limited range size to the block layer,
and stops translating discard commands - instead we add a new
Vendor Specific SCSI command that contains the TRIM payload when
the device asks for it.