From owner-freebsd-hackers@freebsd.org Mon Dec 14 20:59:08 2015 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 24BFAA44AB2 for ; Mon, 14 Dec 2015 20:59:08 +0000 (UTC) (envelope-from killing@multiplay.co.uk) Received: from mail-wm0-x22c.google.com (mail-wm0-x22c.google.com [IPv6:2a00:1450:400c:c09::22c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id BA4BC1A1D for ; Mon, 14 Dec 2015 20:59:07 +0000 (UTC) (envelope-from killing@multiplay.co.uk) Received: by mail-wm0-x22c.google.com with SMTP id n186so65622261wmn.0 for ; Mon, 14 Dec 2015 12:59:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=multiplay-co-uk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-type:content-transfer-encoding; bh=x+ByrY7f8wfkPJo+TVRbaMzDxvTfJfHH141WFkH4g+4=; b=HcRbBUDIOBwbrKuoEzmxfZrKJPYlBoGhDGIrqXsf+WswH87zjSxflOD1TI4KoseNtc UZwgXmZG8C3BbvaDxEgT/0uAddiu9MQvo2WjJ5s7aB2c2vtcysB2C8idu8AzafZ8GMpG zlm8QKjZQ+TtYfhhbWBUpHB/Bna1w2+pEzfsM2C9WssOMSRdU//wYUu+aQc6VcG4fHws qUnlFFkDo62yGEQ8KVjyrP2xQ4CRZeJA2w82sy1PREijWJIp+Vf2Vt/584TvGLVQ8Mzl 2tcQPQVAIDP25a/lp2AIRRPBAFHW5yRd97B4t9jQiLQUZbUi3ILK9cNM1p1AGcA/xeA0 +KUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-type :content-transfer-encoding; bh=x+ByrY7f8wfkPJo+TVRbaMzDxvTfJfHH141WFkH4g+4=; b=NOEaB0f922h3djjOzTdCKDhmBPBVkZb1fADbH1EkycMnZd+s9oybWBaHWian/79hZC eFWODXQj0dI2i3KB3iKjeyq93KH9slpoveSn9MAeSq5pmrlUWY+RoY84HHvsAwvHje0E kV+b185vyXtLe3dbOXA2fOr8aUcaqLvwrNQBaAkFeIzx0KmJnJZoawy+0g4Fw3c737be PMW7G60OMG22eoARWZAapn9mszyPsZdkkleXQ2Ehz3jlwpk3PjOQSlYK6mNppmTRA4Y4 mNZlBwj0egk3nRVLDLVRT8rASnJePBj5JWH+oZUvqoy2OQibD+vRgF0ja6RS8UnGNSSV jaEw== X-Gm-Message-State: ALoCoQnBahD44nfOm8EonEaJ5Bl+ZJ94QoggEBPNoLH4yCmqgUJh8TkLfTl8g2sfcAZlyrMsXkVlMUcMjvWKhFq/0CQp6tMFHw== X-Received: by 10.194.88.102 with SMTP id bf6mr44564767wjb.129.1450126746017; Mon, 14 Dec 2015 12:59:06 -0800 (PST) Received: from [10.10.1.58] (liv3d.labs.multiplay.co.uk. [82.69.141.171]) by smtp.gmail.com with ESMTPSA id xs9sm3880148wjc.43.2015.12.14.12.59.04 for (version=TLSv1/SSLv3 cipher=OTHER); Mon, 14 Dec 2015 12:59:04 -0800 (PST) Subject: Re: Initiate TRIM/DELETE to a range of blocks from userland? To: freebsd-hackers@freebsd.org References: From: Steven Hartland Message-ID: <566F2D9C.5010106@multiplay.co.uk> Date: Mon, 14 Dec 2015 20:59:08 +0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Dec 2015 20:59:08 -0000 http://blog.multiplay.co.uk/dropzone/freebsd/ioctl-delete.c will do this for you. Be aware it will just do it so you can really shoot your self in the foot if your not careful. On 14/12/2015 20:52, Maxim Sobolev wrote: > Hi guys, let's say I have a raw device (e.g. "ada1") and I want to > generate BIO_DELETE to a range of offsets on that device. Is there any > way to do it now, and if not, what do you think would be the most > proper way to get something like this implemented? New ioctl and some > new flag for the dd(1)? > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"