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authorRobin Murphy <robin.murphy@arm.com>2018-12-10 14:00:30 +0000
committerChristoph Hellwig <hch@lst.de>2018-12-11 14:31:18 +0100
commitceb51173b2b5bd7af0d99079f6bbacdcfc58fe08 (patch)
treebc9245f7e98c8e07a1d203d143da808330c244fd /mm/frontswap.c
parent2b9d9ac02b9d8d32c515c82bb17401c429f160ab (diff)
dma-debug: Make leak-like behaviour apparent
Now that we can dynamically allocate DMA debug entries to cope with drivers maintaining excessively large numbers of live mappings, a driver which *does* actually have a bug leaking mappings (and is not unloaded) will no longer trigger the "DMA-API: debugging out of memory - disabling" message until it gets to actual kernel OOM conditions, which means it could go unnoticed for a while. To that end, let's inform the user each time the pool has grown to a multiple of its initial size, which should make it apparent that they either have a leak or might want to increase the preallocation size. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Qian Cai <cai@lca.pw> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'mm/frontswap.c')
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