Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932266AbVKJXXa (ORCPT ); Thu, 10 Nov 2005 18:23:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932267AbVKJXXa (ORCPT ); Thu, 10 Nov 2005 18:23:30 -0500 Received: from e34.co.us.ibm.com ([32.97.110.152]:40119 "EHLO e34.co.us.ibm.com") by vger.kernel.org with ESMTP id S932266AbVKJXX3 (ORCPT ); Thu, 10 Nov 2005 18:23:29 -0500 Subject: [RFC] sys_punchhole() From: Badari Pulavarty To: akpm@osdl.org, andrea@suse.de, hugh@veritas.com Cc: lkml , linux-mm Content-Type: text/plain Date: Thu, 10 Nov 2005 15:23:14 -0800 Message-Id: <1131664994.25354.36.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.0.4 (2.0.4-4) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 854 Lines: 27 Hi Andrew, We discussed this in madvise(REMOVE) thread - to add support for sys_punchhole(fd, offset, len) to complete the functionality (in the future). http://marc.theaimsgroup.com/?l=linux-mm&m=113036713810002&w=2 What I am wondering is, should I invest time now to do it ? Or wait till need arises ? My thought line is, I would add a generic_zeroblocks_range() function which would zero out the given range of pages and flush to disk. Use this as a default operation, if the filesystems doesn't provide a specific function to free up the blocks. Would this work ? Suggestions ? Thanks, Badari - 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/