diff options
| author |   Christoph Hellwig <hch@lst.de> | 2019-07-25 17:56:46 -0700 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2019-07-26 11:10:53 -0300 |
| commit | 9a4903e49e495bfd2650862dfae4178bebe4db9c (patch) | |
| tree | 1e51233f6535642e0aa1dbfea20f4a3eba02a9f5 /include/linux/hmm.h | |
| parent | mm/hmm: a few more C style and comment clean ups (diff) | |
| download | linux-dev-9a4903e49e495bfd2650862dfae4178bebe4db9c.tar.xz linux-dev-9a4903e49e495bfd2650862dfae4178bebe4db9c.zip | |
mm/hmm: replace the block argument to hmm_range_fault with a flags value
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>
Diffstat (limited to 'include/linux/hmm.h')
| -rw-r--r-- | include/linux/hmm.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/hmm.h b/include/linux/hmm.h index 4f870f7017cb..89a141060e5b 100644 --- a/include/linux/hmm.h +++ b/include/linux/hmm.h @@ -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, |