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[PATCH v4 13/20] xfsprogs/repair: account for finobt in ag 0 geometry pr

To: xfs@xxxxxxxxxxx
Subject: [PATCH v4 13/20] xfsprogs/repair: account for finobt in ag 0 geometry pre-calculation
From: Brian Foster <bfoster@xxxxxxxxxx>
Date: Wed, 7 May 2014 08:21:52 -0400
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <1399465319-65066-1-git-send-email-bfoster@xxxxxxxxxx>
References: <1399465319-65066-1-git-send-email-bfoster@xxxxxxxxxx>
Account for the finobt in calc_mkfs().

Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
---
 repair/xfs_repair.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/repair/xfs_repair.c b/repair/xfs_repair.c
index 08b25f0..9eb2fa4 100644
--- a/repair/xfs_repair.c
+++ b/repair/xfs_repair.c
@@ -399,14 +399,18 @@ calc_mkfs(xfs_mount_t *mp)
        do_inoalign = mp->m_sinoalign;
 
        /*
-        * pre-calculate geometry of ag 0.  We know what it looks
-        * like because we know what mkfs does -- 3 btree roots,
-        * and some number of blocks to prefill the agfl.
+        * Pre-calculate the geometry of ag 0. We know what it looks like
+        * because we know what mkfs does: 2 allocation btree roots (by block
+        * and by size), the inode allocation btree root, the free inode
+        * allocation btree root (if enabled) and some number of blocks to
+        * prefill the agfl.
         */
        bnobt_root = howmany(4 * mp->m_sb.sb_sectsize, mp->m_sb.sb_blocksize);
        bcntbt_root = bnobt_root + 1;
        inobt_root = bnobt_root + 2;
        fino_bno = inobt_root + XFS_MIN_FREELIST_RAW(1, 1, mp) + 1;
+       if (xfs_sb_version_hasfinobt(&mp->m_sb))
+               fino_bno++;
 
        /*
         * If the log is allocated in the first allocation group we need to
-- 
1.8.3.1

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