| commit | c61e9637340e1d0672c6f0c0b11aa81d7262c49d | [log] [tgz] |
|---|---|---|
| author | Christoph Hellwig <hch@lst.de> | Tue Jan 09 23:39:03 2018 +0100 |
| committer | Christoph Hellwig <hch@lst.de> | Mon Jan 15 09:35:12 2018 +0100 |
| tree | 2e38215dba2ec8b18ac7f89e4a24c0a0b7da7b52 | |
| parent | 21f237e4d08511eb662b59d8ff1b64be68e0c2bc [diff] |
dma-direct: add support for allocation from ZONE_DMA and ZONE_DMA32 This allows to dip into zones for lower memory if they are available. If one of the zones is not available the corresponding GFP_* flag will evaluate to 0 so they won't change anything. We provide an arch tunable for those architectures that do not use GFP_DMA for the lowest 24-bits, given that there are a few. Roughly based on the x86 code. Signed-off-by: Christoph Hellwig <hch@lst.de>