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(parent: 9420139) | patch
dma-pool: Only allocate from CMA when in same memory zone dma-mapping-5.9-1
authorNicolas Saenz Julienne <nsaenzjulienne@suse.de>
Fri, 14 Aug 2020 10:26:23 +0000 (12:26 +0200)
committerChristoph Hellwig <hch@lst.de>
Fri, 14 Aug 2020 14:27:05 +0000 (16:27 +0200)
commitd7e673ec2c8e0ea39c4c70fc490d67d7fbda869d
tree53d4869dd16cfe73992ceb71094b0914566d5f3dtree
parent9420139f516d7fbc248ce17f35275cb005ed98eacommit | diff
dma-pool: Only allocate from CMA when in same memory zone

There is no guarantee to CMA's placement, so allocating a zone specific
atomic pool from CMA might return memory from a completely different
memory zone. To get around this double check CMA's placement before
allocating from it.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
kernel/dma/pool.c diff | blob | history
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