[PATCH v4 09/11] xfs: add finobt support to growfs

[Brian Foster <bfoster@xxxxxxxxxx>]

Add finobt support to growfs. Initialize the agi root/level fields
and the root finobt block.

Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
Reviewed-by: Dave Chinner <david@xxxxxxxxxxxxx>
---
 fs/xfs/xfs_fsops.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 02fb943..96e4eb0 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -316,6 +316,10 @@ xfs_growfs_data_private(
                agi->agi_dirino = cpu_to_be32(NULLAGINO);
                if (xfs_sb_version_hascrc(&mp->m_sb))
                        uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_uuid);
+               if (xfs_sb_version_hasfinobt(&mp->m_sb)) {
+                       agi->agi_free_root = cpu_to_be32(XFS_FIBT_BLOCK(mp));
+                       agi->agi_free_level = cpu_to_be32(1);
+               }
                for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++)
                        agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO);
 
@@ -407,6 +411,34 @@ xfs_growfs_data_private(
                xfs_buf_relse(bp);
                if (error)
                        goto error0;
+
+               /*
+                * FINO btree root block
+                */
+               if (xfs_sb_version_hasfinobt(&mp->m_sb)) {
+                       bp = xfs_growfs_get_hdr_buf(mp,
+                               XFS_AGB_TO_DADDR(mp, agno, XFS_FIBT_BLOCK(mp)),
+                               BTOBB(mp->m_sb.sb_blocksize), 0,
+                               &xfs_inobt_buf_ops);
+                       if (!bp) {
+                               error = ENOMEM;
+                               goto error0;
+                       }
+
+                       if (xfs_sb_version_hascrc(&mp->m_sb))
+                               xfs_btree_init_block(mp, bp, XFS_FIBT_CRC_MAGIC,
+                                                    0, 0, agno,
+                                                    XFS_BTREE_CRC_BLOCKS);
+                       else
+                               xfs_btree_init_block(mp, bp, XFS_FIBT_MAGIC, 0,
+                                                    0, agno, 0);
+
+                       error = xfs_bwrite(bp);
+                       xfs_buf_relse(bp);
+                       if (error)
+                               goto error0;
+               }
+
        }
        xfs_trans_agblocks_delta(tp, nfree);
        /*
-- 
1.8.3.1