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mm/hmm: replace the block argument to hmm_range_fault with a flags value

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This allows easier expansion to other flags, and also makes the callers a
little easier to read.

Link: https://lore.kernel.org/r/20190726005650.2566-4-rcampbell@nvidia.com
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Christoph Hellwig
2019-07-25 17:56:46 -07:00
committed by Jason Gunthorpe
parent d2e8d55116
commit 9a4903e49e
4 changed files with 48 additions and 41 deletions
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11
include/linux/hmm.h
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@@ -407,12 +407,19 @@ int hmm_range_register(struct hmm_range *range,
unsigned long end,
unsigned page_shift);
void hmm_range_unregister(struct hmm_range *range);
/*
* Retry fault if non-blocking, drop mmap_sem and return -EAGAIN in that case.
*/
#define HMM_FAULT_ALLOW_RETRY (1 << 0)
long hmm_range_snapshot(struct hmm_range *range);
long hmm_range_fault(struct hmm_range *range, bool block);
long hmm_range_fault(struct hmm_range *range, unsigned int flags);
long hmm_range_dma_map(struct hmm_range *range,
struct device *device,
dma_addr_t *daddrs,
bool block);
unsigned int flags);
long hmm_range_dma_unmap(struct hmm_range *range,
struct vm_area_struct *vma,
struct device *device,