From 14861c47400b4a1669956d8b027fe4b7855e39f1 Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Date: Wed, 9 May 2018 10:02:01 -0700
Subject: xfs: add helpers to calculate btree size
Add a bunch of helper functions that calculate the sizes of various
btrees. These will be used to repair btrees and btree headers.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
---
fs/xfs/libxfs/xfs_ialloc_btree.c | 9 +++++++++
1 file changed, 9 insertions(+)
(limited to 'fs/xfs/libxfs/xfs_ialloc_btree.c')
diff --git a/fs/xfs/libxfs/xfs_ialloc_btree.c b/fs/xfs/libxfs/xfs_ialloc_btree.c
index 367e9a0726e6..ba053a4c124f 100644
--- a/fs/xfs/libxfs/xfs_ialloc_btree.c
+++ b/fs/xfs/libxfs/xfs_ialloc_btree.c
@@ -608,3 +608,12 @@ xfs_finobt_calc_reserves(
*used += tree_len;
return 0;
}
+
+/* Calculate the inobt btree size for some records. */
+xfs_extlen_t
+xfs_iallocbt_calc_size(
+ struct xfs_mount *mp,
+ unsigned long long len)
+{
+ return xfs_btree_calc_size(mp->m_inobt_mnr, len);
+}
--
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