From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Darrick J. Wong" Subject: [PATCH 38/58] xfs: add refcount btree support to growfs Date: Tue, 06 Oct 2015 21:59:20 -0700 Message-ID: <20151007045920.30457.11526.stgit@birch.djwong.org> References: <20151007045443.30457.47038.stgit@birch.djwong.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: linux-fsdevel@vger.kernel.org, xfs@oss.sgi.com To: david@fromorbit.com, darrick.wong@oracle.com Return-path: Received: from userp1040.oracle.com ([156.151.31.81]:44780 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752998AbbJGE7Y (ORCPT ); Wed, 7 Oct 2015 00:59:24 -0400 In-Reply-To: <20151007045443.30457.47038.stgit@birch.djwong.org> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Modify the growfs code to initialize new refcount btree blocks. Signed-off-by: Darrick J. Wong --- fs/xfs/xfs_fsops.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index 64bb02b..7c37c22 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -260,6 +260,11 @@ xfs_growfs_data_private( agf->agf_longest = cpu_to_be32(tmpsize); if (xfs_sb_version_hascrc(&mp->m_sb)) uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid); + if (xfs_sb_version_hasreflink(&mp->m_sb)) { + agf->agf_refcount_root = cpu_to_be32( + xfs_refc_block(mp)); + agf->agf_refcount_level = cpu_to_be32(1); + } error = xfs_bwrite(bp); xfs_buf_relse(bp); @@ -451,6 +456,17 @@ xfs_growfs_data_private( rrec->rm_offset = 0; be16_add_cpu(&block->bb_numrecs, 1); + /* account for refc btree root */ + if (xfs_sb_version_hasreflink(&mp->m_sb)) { + rrec = XFS_RMAP_REC_ADDR(block, 5); + rrec->rm_startblock = cpu_to_be32( + xfs_refc_block(mp)); + rrec->rm_blockcount = cpu_to_be32(1); + rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_REFC); + rrec->rm_offset = 0; + be16_add_cpu(&block->bb_numrecs, 1); + } + error = xfs_bwrite(bp); xfs_buf_relse(bp); if (error) @@ -508,6 +524,28 @@ xfs_growfs_data_private( goto error0; } + /* + * refcount btree root block + */ + if (xfs_sb_version_hasreflink(&mp->m_sb)) { + bp = xfs_growfs_get_hdr_buf(mp, + XFS_AGB_TO_DADDR(mp, agno, xfs_refc_block(mp)), + BTOBB(mp->m_sb.sb_blocksize), 0, + &xfs_refcountbt_buf_ops); + if (!bp) { + error = -ENOMEM; + goto error0; + } + + xfs_btree_init_block(mp, bp, XFS_REFC_CRC_MAGIC, + 0, 0, agno, + XFS_BTREE_CRC_BLOCKS); + + error = xfs_bwrite(bp); + xfs_buf_relse(bp); + if (error) + goto error0; + } } xfs_trans_agblocks_delta(tp, nfree); /*