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xfs: add refcount btree support to growfs 

Modify the growfs code to initialize new refcount btree blocks.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
hifive-unleashed-5.1
Darrick J. Wong 2016-10-03 09:11:18 -07:00
parent 1946b91cee
commit ac4fef6938
1 changed files with 39 additions and 0 deletions
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39
fs/xfs/xfs_fsops.c
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@ -259,6 +259,12 @@ 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);
agf->agf_refcount_blocks = cpu_to_be32(1);
}
error = xfs_bwrite(bp);
xfs_buf_relse(bp);
@ -450,6 +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)
@ -507,6 +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);
/*