From: Jason Gunthorpe jgg@mellanox.com
This code can be compiled when CONFIG_TRANSPARENT_HUGEPAGE is off, so remove the ifdef.
The function is only ever called under
if (pmd_devmap(pmd) || pmd_trans_huge(pmd))
Which is statically false if !CONFIG_TRANSPARENT_HUGEPAGE, so the compiler reliably eliminates all of this code.
Reviewed-by: Ralph Campbell rcampbell@nvidia.com Reviewed-by: Christoph Hellwig hch@lst.de Tested-by: Ralph Campbell rcampbell@nvidia.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com --- mm/hmm.c | 6 ------ 1 file changed, 6 deletions(-)
diff --git a/mm/hmm.c b/mm/hmm.c index 8dbd9e1d0308b4..3a71ec72b0a42f 100644 --- a/mm/hmm.c +++ b/mm/hmm.c @@ -193,7 +193,6 @@ static inline uint64_t pmd_to_hmm_pfn_flags(struct hmm_range *range, pmd_t pmd) range->flags[HMM_PFN_VALID]; }
-#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) { @@ -216,11 +215,6 @@ static int hmm_vma_handle_pmd(struct mm_walk *walk, unsigned long addr, hmm_vma_walk->last = end; return 0; } -#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 bool hmm_is_device_private_entry(struct hmm_range *range, swp_entry_t entry)