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| author | Mikulas Patocka <mpatocka@redhat.com> | 2022-05-10 13:17:32 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-09 10:20:54 +0200 |
| commit | 1ecd01d77c9bf5517617862d87b817804b67c771 (patch) | |
| tree | 711ef7d27a2e532a0f54976f4069132489325bf1 /arch/sh/mm | |
| parent | a61583744ef63157d52117bb1cf08ad4de455ebf (diff) | |
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>
Diffstat (limited to 'arch/sh/mm')
0 files changed, 0 insertions, 0 deletions