From patchwork Tue Jun 25 00:45:32 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Sandeen X-Patchwork-Id: 11014443 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E75A576 for ; Tue, 25 Jun 2019 00:45:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D667D287ED for ; Tue, 25 Jun 2019 00:45:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C6C2D288D3; Tue, 25 Jun 2019 00:45:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0C06D287ED for ; Tue, 25 Jun 2019 00:45:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728002AbfFYApd (ORCPT ); Mon, 24 Jun 2019 20:45:33 -0400 Received: from sandeen.net ([63.231.237.45]:37644 "EHLO sandeen.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727769AbfFYApd (ORCPT ); Mon, 24 Jun 2019 20:45:33 -0400 Received: from [10.0.0.4] (liberator [10.0.0.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by sandeen.net (Postfix) with ESMTPSA id 619CC78CF; Mon, 24 Jun 2019 19:45:24 -0500 (CDT) Subject: [PATCH 1/2] xfs: factor range zeroing out of xfs_free_file_space To: Eric Sandeen , linux-xfs References: From: Eric Sandeen Openpgp: preference=signencrypt Autocrypt: addr=sandeen@sandeen.net; prefer-encrypt=mutual; keydata= mQINBE6x99QBEADMR+yNFBc1Y5avoUhzI/sdR9ANwznsNpiCtZlaO4pIWvqQJCjBzp96cpCs nQZV32nqJBYnDpBDITBqTa/EF+IrHx8gKq8TaSBLHUq2ju2gJJLfBoL7V3807PQcI18YzkF+ WL05ODFQ2cemDhx5uLghHEeOxuGj+1AI+kh/FCzMedHc6k87Yu2ZuaWF+Gh1W2ix6hikRJmQ vj5BEeAx7xKkyBhzdbNIbbjV/iGi9b26B/dNcyd5w2My2gxMtxaiP7q5b6GM2rsQklHP8FtW ZiYO7jsg/qIppR1C6Zr5jK1GQlMUIclYFeBbKggJ9mSwXJH7MIftilGQ8KDvNuV5AbkronGC sEEHj2khs7GfVv4pmUUHf1MRIvV0x3WJkpmhuZaYg8AdJlyGKgp+TQ7B+wCjNTdVqMI1vDk2 BS6Rg851ay7AypbCPx2w4d8jIkQEgNjACHVDU89PNKAjScK1aTnW+HNUqg9BliCvuX5g4z2j gJBs57loTWAGe2Ve3cMy3VoQ40Wt3yKK0Eno8jfgzgb48wyycINZgnseMRhxc2c8hd51tftK LKhPj4c7uqjnBjrgOVaVBupGUmvLiePlnW56zJZ51BR5igWnILeOJ1ZIcf7KsaHyE6B1mG+X dmYtjDhjf3NAcoBWJuj8euxMB6TcQN2MrSXy5wSKaw40evooGwARAQABtCVFcmljIFIuIFNh bmRlZW4gPHNhbmRlZW5Ac2FuZGVlbi5uZXQ+iQI7BBMBAgAlAhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgAUCUzMzbAIZAQAKCRAgrhaS4T3e4Fr7D/wO+fenqVvHjq21SCjDCrt8HdVj aJ28B1SqSU2toxyg5I160GllAxEHpLFGdbFAhQfBtnmlY9eMjwmJb0sCIrkrB6XNPSPA/B2B UPISh0z2odJv35/euJF71qIFgWzp2czJHkHWwVZaZpMWWNvsLIroXoR+uA9c2V1hQFVAJZyk EE4xzfm1+oVtjIC12B9tTCuS00pY3AUy21yzNowT6SSk7HAzmtG/PJ/uSB5wEkwldB6jVs2A sjOg1wMwVvh/JHilsQg4HSmDfObmZj1d0RWlMWcUE7csRnCE0ZWBMp/ttTn+oosioGa09HAS 9jAnauznmYg43oQ5Akd8iQRxz5I58F/+JsdKvWiyrPDfYZtFS+UIgWD7x+mHBZ53Qjazszox gjwO9ehZpwUQxBm4I0lPDAKw3HJA+GwwiubTSlq5PS3P7QoCjaV8llH1bNFZMz2o8wPANiDx 5FHgpRVgwLHakoCU1Gc+LXHXBzDXt7Cj02WYHdFzMm2hXaslRdhNGowLo1SXZFXa41KGTlNe 4di53y9CK5ynV0z+YUa+5LR6RdHrHtgywdKnjeWdqhoVpsWIeORtwWGX8evNOiKJ7j0RsHha WrePTubr5nuYTDsQqgc2r4aBIOpeSRR2brlT/UE3wGgy9LY78L4EwPR0MzzecfE1Ws60iSqw Pu3vhb7h3bkCDQROsffUARAA0DrUifTrXQzqxO8aiQOC5p9Tz25Np/Tfpv1rofOwL8VPBMvJ X4P5l1V2yd70MZRUVgjmCydEyxLJ6G2YyHO2IZTEajUY0Up+b3ErOpLpZwhvgWatjifpj6bB SKuDXeThqFdkphF5kAmgfVAIkan5SxWK3+S0V2F/oxstIViBhMhDwI6XsRlnVBoLLYcEilxA 2FlRUS7MOZGmRJkRtdGD5koVZSM6xVZQSmfEBaYQ/WJBGJQdPy94nnlAVn3lH3+N7pXvNUuC GV+t4YUt3tLcRuIpYBCOWlc7bpgeCps5Xa0dIZgJ8Louu6OBJ5vVXjPxTlkFdT0S0/uerCG5 1u8p6sGRLnUeAUGkQfIUqGUjW2rHaXgWNvzOV6i3tf9YaiXKl3avFaNW1kKBs0T5M1cnlWZU Utl6k04lz5OjoNY9J/bGyV3DSlkblXRMK87iLYQSrcV6cFz9PRl4vW1LGff3xRQHngeN5fPx ze8X5NE3hb+SSwyMSEqJxhVTXJVfQWWW0dQxP7HNwqmOWYF/6m+1gK/Y2gY3jAQnsWTru4RV TZGnKwEPmOCpSUvsTRXsVHgsWJ70qd0yOSjWuiv4b8vmD3+QFgyvCBxPMdP3xsxN5etheLMO gRwWpLn6yNFq/xtgs+ECgG+gR78yXQyA7iCs5tFs2OrMqV5juSMGmn0kxJUAEQEAAYkCHwQY AQIACQUCTrH31AIbDAAKCRAgrhaS4T3e4BKwD/0ZOOmUNOZCSOLAMjZx3mtYtjYgfUNKi0ki YPveGoRWTqbis8UitPtNrG4XxgzLOijSdOEzQwkdOIp/QnZhGNssMejCnsluK0GQd+RkFVWN mcQT78hBeGcnEMAXZKq7bkIKzvc06GFmkMbX/gAl6DiNGv0UNAX+5FYh+ucCJZSyAp3sA+9/ LKjxnTedX0aygXA6rkpX0Y0FvN/9dfm47+LGq7WAqBOyYTU3E6/+Z72bZoG/cG7ANLxcPool LOrU43oqFnD8QwcN56y4VfFj3/jDF2MX3xu4v2OjglVjMEYHTCxP3mpxesGHuqOit/FR+mF0 MP9JGfj6x+bj/9JMBtCW1bY/aPeMdPGTJvXjGtOVYblGZrSjXRn5++Uuy36CvkcrjuziSDG+ JEexGxczWwN4mrOQWhMT5Jyb+18CO+CWxJfHaYXiLEW7dI1AynL4jjn4W0MSiXpWDUw+fsBO Pk6ah10C4+R1Jc7dyUsKksMfvvhRX1hTIXhth85H16706bneTayZBhlZ/hK18uqTX+s0onG/ m1F3vYvdlE4p2ts1mmixMF7KajN9/E5RQtiSArvKTbfsB6Two4MthIuLuf+M0mI4gPl9SPlf fWCYVPhaU9o83y1KFbD/+lh1pjP7bEu/YudBvz7F2Myjh4/9GUAijrCTNeDTDAgvIJDjXuLX pA== Message-ID: <23867a36-6f3b-81fb-e463-dc941617e9de@sandeen.net> Date: Mon, 24 Jun 2019 19:45:32 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Factor out the range zeroing part of xfs_free_file_space into a new function, xfs_zero_range, which is a wrapper around iomap_zero_range + EOF handling. Signed-off-by: Eric Sandeen diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 2a7e10f26bb0..0a96c4d1718e 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -1061,6 +1061,37 @@ xfs_flush_unmap_range( return 0; } +/* + * Ensure that the specified range is all zeros. + * Unmapped or unwritten blocks are left alone by the iomap mechanism, + * as they already return zero on read. + * This will happily extend i_size if asked to do so. + */ +static int +xfs_zero_range( + struct xfs_inode *ip, + xfs_off_t offset, + xfs_off_t len) +{ + int error; + + error = iomap_zero_range(VFS_I(ip), offset, len, NULL, &xfs_iomap_ops); + if (error) + return error; + /* + * If we zeroed right up to EOF and EOF straddles a page boundary we + * must make sure that the post-EOF area is also zeroed because the + * page could be mmap'd and iomap_zero_range doesn't do that for us. + * Writeback of the eof page will do this, albeit clumsily. + */ + if (offset + len >= XFS_ISIZE(ip) && offset_in_page(offset + len) > 0) { + error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, + round_down(offset + len, PAGE_SIZE), LLONG_MAX); + } + + return error; +} + int xfs_free_file_space( struct xfs_inode *ip, @@ -1101,28 +1132,15 @@ xfs_free_file_space( } /* - * Now that we've unmap all full blocks we'll have to zero out any - * partial block at the beginning and/or end. iomap_zero_range is smart - * enough to skip any holes, including those we just created, but we - * must take care not to zero beyond EOF and enlarge i_size. - */ - if (offset >= XFS_ISIZE(ip)) - return 0; - if (offset + len > XFS_ISIZE(ip)) - len = XFS_ISIZE(ip) - offset; - error = iomap_zero_range(VFS_I(ip), offset, len, NULL, &xfs_iomap_ops); - if (error) - return error; - - /* - * If we zeroed right up to EOF and EOF straddles a page boundary we - * must make sure that the post-EOF area is also zeroed because the - * page could be mmap'd and iomap_zero_range doesn't do that for us. - * Writeback of the eof page will do this, albeit clumsily. + * Now that we've unmapped all full blocks we'll have to zero out any + * partial block at the beginning and/or end. xfs_zero_range is smart + * enough to skip any holes, including those we just created. We don't + * want to zero beyond EOF and enlarge i_size. */ - if (offset + len >= XFS_ISIZE(ip) && offset_in_page(offset + len) > 0) { - error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, - round_down(offset + len, PAGE_SIZE), LLONG_MAX); + if (offset < XFS_ISIZE(ip)) { + if (offset + len > XFS_ISIZE(ip)) + len = XFS_ISIZE(ip) - offset; + error = xfs_zero_range(ip, offset, len); } return error; From patchwork Tue Jun 25 00:48:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Sandeen X-Patchwork-Id: 11014445 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D270076 for ; Tue, 25 Jun 2019 00:48:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BEEFA28B35 for ; Tue, 25 Jun 2019 00:48:14 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AF69B28B3B; Tue, 25 Jun 2019 00:48:14 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4B57528B35 for ; Tue, 25 Jun 2019 00:48:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729654AbfFYAsN (ORCPT ); Mon, 24 Jun 2019 20:48:13 -0400 Received: from sandeen.net ([63.231.237.45]:37882 "EHLO sandeen.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727648AbfFYAsN (ORCPT ); Mon, 24 Jun 2019 20:48:13 -0400 Received: from [10.0.0.4] (liberator [10.0.0.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by sandeen.net (Postfix) with ESMTPSA id 3DAE1325F; Mon, 24 Jun 2019 19:48:04 -0500 (CDT) Subject: [PATCH 2/2] xfs: convert extents in place for ZERO_RANGE To: Eric Sandeen , linux-xfs References: From: Eric Sandeen Openpgp: preference=signencrypt Autocrypt: addr=sandeen@sandeen.net; 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Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Rather than completely removing and re-allocating a range during ZERO_RANGE fallocate calls, convert whole blocks in the range using xfs_alloc_file_space(XFS_BMAPI_PREALLOC|XFS_BMAPI_CONVERT) and then zero the edges with xfs_zero_range() (Note that this changes the rounding direction of the xfs_alloc_file_space range, because we only want to hit whole blocks within the range.) Signed-off-by: Eric Sandeen --- diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 0a96c4d1718e..eae202bfe134 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -1164,23 +1164,25 @@ xfs_zero_file_space( blksize = 1 << mp->m_sb.sb_blocklog; + error = xfs_flush_unmap_range(ip, offset, len); + if (error) + return error; /* - * Punch a hole and prealloc the range. We use hole punch rather than - * unwritten extent conversion for two reasons: - * - * 1.) Hole punch handles partial block zeroing for us. - * - * 2.) If prealloc returns ENOSPC, the file range is still zero-valued - * by virtue of the hole punch. + * Convert whole blocks in the range to unwritten, then call iomap + * via xfs_zero_range to zero the range. iomap will skip holes and + * unwritten extents, and just zero the edges if needed. If conversion + * fails, iomap will simply write zeros to the whole range. + * nb: always_cow doesn't support unwritten extents. */ - error = xfs_free_file_space(ip, offset, len); - if (error || xfs_is_always_cow_inode(ip)) - return error; + if (!xfs_is_always_cow_inode(ip)) + xfs_alloc_file_space(ip, round_up(offset, blksize), + round_down(offset + len, blksize) - + round_up(offset, blksize), + XFS_BMAPI_PREALLOC|XFS_BMAPI_CONVERT); - return xfs_alloc_file_space(ip, round_down(offset, blksize), - round_up(offset + len, blksize) - - round_down(offset, blksize), - XFS_BMAPI_PREALLOC); + error = xfs_zero_range(ip, offset, len); + + return error; } static int