md/raid5: add exact old and new llbitmap mapping helpers

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Teach RAID5 to export exact old and new llbitmap mappings and the
corresponding sync and array sizes for reshape-aware bitmap users.

Tested-by: Mykola Marzhan <mykola@meshstor.io>
Link: https://patch.msgid.link/20260802195038.164272-27-yukuai@kernel.org
Signed-off-by: Yu Kuai <yukuai@fygo.io>

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Yu Kuai 2026-08-03 03:50:35 +08:00

parent aa648f26a9

commit 9f59258d30

1 changed files with 53 additions and 20 deletions

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drivers/md/raid5.c

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