xfs: support the XFS_BTNUM_FINOBT free inode btree type

Define the AGI fields for the finobt root/level and add magic
numbers. Update the btree code to add support for the new
XFS_BTNUM_FINOBT inode btree.

The finobt root block is reserved immediately following the inobt
root block in the AG. Update XFS_PREALLOC_BLOCKS() to determine the
starting AG data block based on whether finobt support is enabled.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

1 files changed, 17 insertions, 1 deletions

diff --git a/fs/xfs/xfs_stats.h b/fs/xfs/xfs_stats.h
index c03ad38ceaeb..c8f238b8299a 100644
--- a/fs/xfs/xfs_stats.h
+++ b/fs/xfs/xfs_stats.h
@@ -183,7 +183,23 @@ struct xfsstats {
         __uint32_t              xs_ibt_2_alloc;
         __uint32_t              xs_ibt_2_free;
         __uint32_t              xs_ibt_2_moves;
-#define XFSSTAT_END_XQMSTAT             (XFSSTAT_END_IBT_V2+6)
+#define XFSSTAT_END_FIBT_V2             (XFSSTAT_END_IBT_V2+15)
+        __uint32_t              xs_fibt_2_lookup;
+        __uint32_t              xs_fibt_2_compare;
+        __uint32_t              xs_fibt_2_insrec;
+        __uint32_t              xs_fibt_2_delrec;
+        __uint32_t              xs_fibt_2_newroot;
+        __uint32_t              xs_fibt_2_killroot;
+        __uint32_t              xs_fibt_2_increment;
+        __uint32_t              xs_fibt_2_decrement;
+        __uint32_t              xs_fibt_2_lshift;
+        __uint32_t              xs_fibt_2_rshift;
+        __uint32_t              xs_fibt_2_split;
+        __uint32_t              xs_fibt_2_join;
+        __uint32_t              xs_fibt_2_alloc;
+        __uint32_t              xs_fibt_2_free;
+        __uint32_t              xs_fibt_2_moves;
+#define XFSSTAT_END_XQMSTAT             (XFSSTAT_END_FIBT_V2+6)
         __uint32_t              xs_qm_dqreclaims;
         __uint32_t              xs_qm_dqreclaim_misses;
         __uint32_t              xs_qm_dquot_dups;