dm-verity-fec: simplify computation of rsb

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To compute 'rsb', verity_fec_decode() divides 'offset' by
'v->fec->region_blocks << v->data_dev_block_bits', then subtracts the
quotient times that divisor.  That's simply the long way to do a modulo
operation, i.e. a - b * floor(a / b) instead of just a % b.  Use
div64_u64_rem() to get the remainder more concisely.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

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Eric Biggers 2026-02-05 20:59:32 -08:00 • committed by Mikulas Patocka

parent 41208f3707

commit 8ef45923fd

1 changed files with 3 additions and 3 deletions

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drivers/md/dm-verity-fec.c

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