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xfs: split out a btree type from the btree ops geometry flags

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Two of the btree cursor flags are always used together and encode
the fundamental btree type.  There currently are two such types:

 1) an on-disk AG-rooted btree with 32-bit pointers
 2) an on-disk inode-rooted btree with 64-bit pointers

and we're about to add:

 3) an in-memory btree with 64-bit pointers

Introduce a new enum and a new type field in struct xfs_btree_geom
to encode this type directly instead of using flags and change most
code to switch on this enum.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
[djwong: make the pointer lengths explicit]
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Christoph Hellwig 2024-02-22 12:36:17 -08:00 • committed by Darrick J. Wong
commit 4f0cd5a555
12 changed files with 74 additions and 52 deletions
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