From: JP Abgrall Subject: Re: [PATCH] ext4: Add support for SFITRIM, an ioctl for secure FITRIM. Date: Fri, 13 Jun 2014 13:12:25 -0700 Message-ID: References: <1402625647-31439-1-git-send-email-jpa@google.com> <539A63C1.8010809@redhat.com> <20140613031538.GR4453@dastard> <20140613033029.GS4453@dastard> <20140613050703.GT4453@dastard> <20140613142054.GA23180@thunk.org> <20140613143157.GB23180@thunk.org> <539B579F.5000403@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Cc: "Theodore Ts'o" , Dave Chinner , linux-ext4@vger.kernel.org, Geremy Condra , "linux-fsdevel@vger.kernel.org" To: Eric Sandeen Return-path: Received: from mail-ob0-f177.google.com ([209.85.214.177]:40715 "EHLO mail-ob0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751836AbaFMUMp (ORCPT ); Fri, 13 Jun 2014 16:12:45 -0400 Received: by mail-ob0-f177.google.com with SMTP id uy5so3218473obc.36 for ; Fri, 13 Jun 2014 13:12:45 -0700 (PDT) In-Reply-To: <539B579F.5000403@redhat.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Fri, Jun 13, 2014 at 12:57 PM, Eric Sandeen wrote: > I don't know what device you're running on, At least Nexus devices that will get updates. :) > but figured it might > be worth pointing out that not all hardware even supports this > capability. True. For future devices, the feature will be for certain eMMC devices, certain kernels, certain FSes only. All stuff that we don't control, but we can give advice on.