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| author |   Christoph Hellwig <hch@lst.de> | 2019-08-06 19:05:49 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2019-08-07 14:58:06 -0300 |
| commit | 9d3973d60f0abd3985229bd895f45e2b8974344c (patch) | |
| tree | 501783ad7739a3daca4fcb0801db4ff3ed52313a /mm/hmm.c | |
| parent | mm/hmm: only define hmm_vma_walk_pud if needed (diff) | |
| download | wireguard-linux-9d3973d60f0abd3985229bd895f45e2b8974344c.tar.xz wireguard-linux-9d3973d60f0abd3985229bd895f45e2b8974344c.zip | |
mm/hmm: cleanup the hmm_vma_handle_pmd stub
Stub out the whole function when CONFIG_TRANSPARENT_HUGEPAGE is not set to
make the function easier to read.
Link: https://lore.kernel.org/r/20190806160554.14046-12-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'mm/hmm.c')
| -rw-r--r-- | mm/hmm.c | 18 |
1 files changed, 8 insertions, 10 deletions
@@ -456,13 +456,10 @@ static inline uint64_t pmd_to_hmm_pfn_flags(struct hmm_range *range, pmd_t pmd) range->flags[HMM_PFN_VALID]; } -static int hmm_vma_handle_pmd(struct mm_walk *walk, - unsigned long addr, - unsigned long end, - uint64_t *pfns, - pmd_t pmd) -{ #ifdef CONFIG_TRANSPARENT_HUGEPAGE +static int hmm_vma_handle_pmd(struct mm_walk *walk, unsigned long addr, + unsigned long end, uint64_t *pfns, pmd_t pmd) +{ struct hmm_vma_walk *hmm_vma_walk = walk->private; struct hmm_range *range = hmm_vma_walk->range; unsigned long pfn, npages, i; @@ -493,11 +490,12 @@ static int hmm_vma_handle_pmd(struct mm_walk *walk, } hmm_vma_walk->last = end; return 0; -#else - /* If THP is not enabled then we should never reach this code ! */ - return -EINVAL; -#endif } +#else /* CONFIG_TRANSPARENT_HUGEPAGE */ +/* stub to allow the code below to compile */ +int hmm_vma_handle_pmd(struct mm_walk *walk, unsigned long addr, + unsigned long end, uint64_t *pfns, pmd_t pmd); +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ static inline uint64_t pte_to_hmm_pfn_flags(struct hmm_range *range, pte_t pte) { |