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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

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