Mikulas Patocka a4d4e55e34
dma-debug: change allocation mode from GFP_NOWAIT to GFP_ATIOMIC ...
[ Upstream commit 84bc4f1dbbbb5f8aa68706a96711dccb28b518e5 ]
We observed the error "cacheline tracking ENOMEM, dma-debug disabled"
during a light system load (copying some files). The reason for this error
is that the dma_active_cacheline radix tree uses GFP_NOWAIT allocation -
so it can't access the emergency memory reserves and it fails as soon as
anybody reaches the watermark.
This patch changes GFP_NOWAIT to GFP_ATOMIC, so that it can access the
emergency memory reserves.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com >
Signed-off-by: Christoph Hellwig <hch@lst.de >
Signed-off-by: Sasha Levin <sashal@kernel.org >
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a4d4e55e34