Mikulas Patocka 1ecd01d77c 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>

2022-06-09 10:20:54 +02:00

..

coherent.c

dma-mapping: split <linux/dma-mapping.h>

2020-10-06 07:07:03 +02:00

contiguous.c

dma-mapping updates for 5.10

2020-10-15 14:43:29 -07:00

debug.c

dma-debug: change allocation mode from GFP_NOWAIT to GFP_ATIOMIC

2022-06-09 10:20:54 +02:00

debug.h

dma-mapping: move dma-debug.h to kernel/dma/

2020-10-06 07:07:05 +02:00

direct.c

kernel/: fix repeated words in comments

2020-10-16 11:11:19 -07:00

direct.h

dma-direct: avoid redundant memory sync for swiotlb

2022-04-20 09:23:30 +02:00

dummy.c

dma-mapping: split <linux/dma-mapping.h>

2020-10-06 07:07:03 +02:00

Kconfig

dma-mapping: merge <linux/dma-contiguous.h> into <linux/dma-map-ops.h>

2020-10-06 07:07:04 +02:00

Makefile

dma-mapping: move dma_common_{mmap,get_sgtable} out of mapping.c

2020-09-11 09:14:56 +02:00

mapping.c

dma-mapping: move large parts of <linux/dma-direct.h> to kernel/dma

2020-10-06 07:07:06 +02:00

ops_helpers.c

dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}

2021-07-28 14:35:38 +02:00

pool.c

dma/pool: create dma atomic pool only if dma zone has managed pages

2022-01-27 10:53:44 +01:00

remap.c

dma-mapping: move more functions to dma-map-ops.h

2020-10-20 10:41:07 +02:00

swiotlb.c

Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE""

2022-05-25 09:17:55 +02:00

virt.c

dma-mapping: split <linux/dma-mapping.h>

2020-10-06 07:07:03 +02:00