blk-crypto: use mempool_alloc_bulk for encrypted bio page allocation

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Calling mempool_alloc in a loop is not safe unless the maximum allocation
size times the maximum number of threads using it is less than the
minimum pool size.  Use the new mempool_alloc_bulk helper to allocate
all missing elements in one pass to remove this deadlock risk.  This
also means that non-pool allocations now use alloc_pages_bulk which can
be significantly faster than a loop over individual page allocations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2026-01-09 07:07:47 +01:00 • committed by Jens Axboe

parent 2f655dcb2d

commit 3d939695e6

1 changed files with 62 additions and 14 deletions

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block/blk-crypto-fallback.c

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