From owner-freebsd-current Mon Feb 9 12:01:51 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id MAA13583 for current-outgoing; Mon, 9 Feb 1998 12:01:51 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from smtp03.primenet.com (smtp03.primenet.com [206.165.6.133]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id MAA13577 for ; Mon, 9 Feb 1998 12:01:50 -0800 (PST) (envelope-from tlambert@usr09.primenet.com) Received: (from daemon@localhost) by smtp03.primenet.com (8.8.8/8.8.8) id NAA16304; Mon, 9 Feb 1998 13:01:49 -0700 (MST) Received: from usr09.primenet.com(206.165.6.209) via SMTP by smtp03.primenet.com, id smtpd016280; Mon Feb 9 13:01:44 1998 Received: (from tlambert@localhost) by usr09.primenet.com (8.8.5/8.8.5) id NAA29822; Mon, 9 Feb 1998 13:01:43 -0700 (MST) From: Terry Lambert Message-Id: <199802092001.NAA29822@usr09.primenet.com> Subject: Re: Custom init(8) (and some ideas) To: jas@flyingfox.com (Jim Shankland) Date: Mon, 9 Feb 1998 20:01:42 +0000 (GMT) Cc: freebsd-current@FreeBSD.ORG In-Reply-To: <199802091806.KAA18225@biggusdiskus.flyingfox.com> from "Jim Shankland" at Feb 9, 98 10:06:52 am X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > On a related note, I did not understand the distinction between > mmap-ing the text section and "execute-in-place." If someone could > expand briefly, I'd appreciate it. In the first case, there is a backing object, so the pages can be discarded and recovered later to make room for dirty pages. In the second case, the backing object is compressed, and the pages are generated from decompressing the *entire* backing object, and appear as dirty pages (which can not be discarded, and some of which are never used). Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe current" in the body of the message