From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#23904: Btrfs clone support in copy operations Date: Wed, 06 Jul 2016 17:58:15 +0300 Message-ID: <83oa6an794.fsf@gnu.org> References: <1467745602.28158.17.camel@kcolford.com> <577C5588.3060608@cs.ucla.edu> <7d9c224b-e525-de33-426e-15bc328e7108@yandex.ru> <577CF00A.80707@cs.ucla.edu> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1467817595 13954 80.91.229.3 (6 Jul 2016 15:06:35 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 6 Jul 2016 15:06:35 +0000 (UTC) Cc: sbaugh@catern.com, kieran@kcolford.com, dmantipov@yandex.ru, 23904@debbugs.gnu.org To: Paul Eggert Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Jul 06 17:06:22 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1bKoP7-0005NA-G4 for geb-bug-gnu-emacs@m.gmane.org; Wed, 06 Jul 2016 17:06:21 +0200 Original-Received: from localhost ([::1]:34068 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKoP6-0002ee-Mz for geb-bug-gnu-emacs@m.gmane.org; Wed, 06 Jul 2016 11:06:20 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51521) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKoJ7-0004Dc-73 for bug-gnu-emacs@gnu.org; Wed, 06 Jul 2016 11:00:15 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bKoJ0-0003GN-KQ for bug-gnu-emacs@gnu.org; Wed, 06 Jul 2016 11:00:08 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:55552) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKoJ0-0003GG-H9 for bug-gnu-emacs@gnu.org; Wed, 06 Jul 2016 11:00:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1bKoJ0-0001Jd-Aw for bug-gnu-emacs@gnu.org; Wed, 06 Jul 2016 11:00:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 06 Jul 2016 15:00:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 23904 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 23904-submit@debbugs.gnu.org id=B23904.14678171494970 (code B ref 23904); Wed, 06 Jul 2016 15:00:02 +0000 Original-Received: (at 23904) by debbugs.gnu.org; 6 Jul 2016 14:59:09 +0000 Original-Received: from localhost ([127.0.0.1]:39656 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bKoI9-0001I6-7i for submit@debbugs.gnu.org; Wed, 06 Jul 2016 10:59:09 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:60028) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bKoI7-0001Hi-KV for 23904@debbugs.gnu.org; Wed, 06 Jul 2016 10:59:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bKoI1-0002wy-OB for 23904@debbugs.gnu.org; Wed, 06 Jul 2016 10:59:02 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:35277) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKoHa-0002pm-Do; Wed, 06 Jul 2016 10:58:34 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:4420 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1bKoHW-0007zB-0j; Wed, 06 Jul 2016 10:58:30 -0400 In-reply-to: <577CF00A.80707@cs.ucla.edu> (message from Paul Eggert on Wed, 6 Jul 2016 13:48:26 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:120494 Archived-At: > From: Paul Eggert > Date: Wed, 6 Jul 2016 13:48:26 +0200 > Cc: sbaugh@catern.com, Kieran Colford > > Revised patch attached. Basically untested, since I don't use any file > systems that support FIOCLONERANGE. The patch still has FIXMEs for what > happens if the FIOCLONERANGE ioctl is interrupted by a signal, and for a > good clone chunk size (the patch guesses 1 GiB). Thanks. However, I wonder: are we sure users will always want this unconditionally, completely out of their control? Does 'cp' from Coreutils do the same unconditionally, for example?