Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755381AbbDTM6s (ORCPT ); Mon, 20 Apr 2015 08:58:48 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:34105 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754577AbbDTM6q (ORCPT ); Mon, 20 Apr 2015 08:58:46 -0400 Date: Mon, 20 Apr 2015 13:58:35 +0100 From: Al Viro To: Christoph Hellwig Cc: David Howells , NeilBrown , Chris Mason , Josef Bacik , David Sterba , Dave Chinner , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org Subject: Re: [PATCH 3/3] btrfs: set FS_SUPPORTS_SEEK_HOLE flag. Message-ID: <20150420125835.GJ889@ZenIV.linux.org.uk> References: <20150420193347.29378d69@notabene.brown> <20150420052752.26554.13596.stgit@notabene.brown> <20150420052558.26554.97143.stgit@notabene.brown> <30419.1429519662@warthog.procyon.org.uk> <31824.1429523209@warthog.procyon.org.uk> <20150420094855.GA21116@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150420094855.GA21116@infradead.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 715 Lines: 19 On Mon, Apr 20, 2015 at 02:48:55AM -0700, Christoph Hellwig wrote: > On Mon, Apr 20, 2015 at 10:46:49AM +0100, David Howells wrote: > > NeilBrown wrote: > > > > > Missing patch 2 of the 3-patch series? > > > > Yes. :-) > > > > Do ext4 and xfs support this, do you know? > > Yes. As do f2fs, ocfs2, gfs2, ceph and NFSv4.2 Er... Nominally, gfs2 supports it. By treating all files as "there's a hole starting at EOF". Same as ext2 or even minix... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/