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mm/hmm: don't provide a stub for hmm_range_fault() 

All callers of hmm_range_fault depend on CONFIG_HMM_MIRROR, so don't
bother with a stub.

Link: https://lore.kernel.org/r/20200316135310.899364-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Christoph Hellwig 2020-03-16 14:53:06 +01:00 committed by Jason Gunthorpe
parent 24cee8ab41
commit ddfaed17a7
1 changed files with 0 additions and 7 deletions
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7
include/linux/hmm.h
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@ -225,17 +225,10 @@ static inline uint64_t hmm_device_entry_from_pfn(const struct hmm_range *range,
/* Don't fault in missing PTEs, just snapshot the current state. */
#define HMM_FAULT_SNAPSHOT (1 << 1)
#ifdef CONFIG_HMM_MIRROR
/*
* Please see Documentation/vm/hmm.rst for how to use the range API.
*/
long hmm_range_fault(struct hmm_range *range, unsigned int flags);
#else
static inline long hmm_range_fault(struct hmm_range *range, unsigned int flags)
{
return -EOPNOTSUPP;
}
#endif
/*
* HMM_RANGE_DEFAULT_TIMEOUT - default timeout (ms) when waiting for a range