kho: allow destroying KHO radix tree

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Add kho_radix_destroy_tree() which allows destroying the radix tree and
freeing all its pages.

This is will be used by the upcoming scratch extension mechanism. It
creates a radix tree to track free blocks and then frees them after
telling memblock about them.

Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Pratyush Yadav (Google) <pratyush@kernel.org>
Link: https://patch.msgid.link/20260801084833.1897543-12-pratyush@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>

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Pratyush Yadav (Google) 2026-08-01 10:48:20 +02:00 • committed by Mike Rapoport (Microsoft)

parent 3ab43ce410

commit a8ea530d7d

2 changed files with 38 additions and 0 deletions

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3

include/linux/kho_radix_tree.h

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35

kernel/liveupdate/kexec_handover.c

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