linux-kernel - Re: TRIM/UNMAP/DISCARD via ATA Passthrough

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Message-ID: <20160913174514.GA3484@khazad-dum.debian.net>
Date:   Tue, 13 Sep 2016 14:45:14 -0300
From:   Henrique de Moraes Holschuh <hmh@....eng.br>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     linux-scsi@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: TRIM/UNMAP/DISCARD via ATA Passthrough

On Mon, 12 Sep 2016, Jason A. Donenfeld wrote:
> I was wondering if it'd be possible to have the uas driver -- or
> perhaps somewhere else in the stack -- fall back to using
> ATA-passthrough-TRIM for UNMAP, so that discard can work properly.
> AFAIK, the Windows drivers do exactly this.
> 
> If the answer is, "yes we want this! but we don't have the man power,"
> please tell me where I can start looking, so that I can submit the
> patch myself.

Whomever implements this, please add a "chicken bit" to allow the user
to disable it if the enclosure misbehaves.

-- 
  Henrique Holschuh