diff options
Diffstat (limited to 'mm/gup.c')
| -rw-r--r-- | mm/gup.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/mm/gup.c b/mm/gup.c index 7017abea9fd6b..70d65e4015a49 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -241,13 +241,6 @@ struct page *follow_page_mask(struct vm_area_struct *vma, spin_unlock(ptl); return follow_page_pte(vma, address, pmd, flags); } - - if (unlikely(pmd_trans_splitting(*pmd))) { - spin_unlock(ptl); - wait_split_huge_page(vma->anon_vma, pmd); - return follow_page_pte(vma, address, pmd, flags); - } - if (flags & FOLL_SPLIT) { int ret; page = pmd_page(*pmd); @@ -1068,9 +1061,6 @@ struct page *get_dump_page(unsigned long addr) * *) HAVE_RCU_TABLE_FREE is enabled, and tlb_remove_table is used to free * pages containing page tables. * - * *) THP splits will broadcast an IPI, this can be achieved by overriding - * pmdp_splitting_flush. - * * *) ptes can be read atomically by the architecture. * * *) access_ok is sufficient to validate userspace address ranges. @@ -1267,7 +1257,7 @@ static int gup_pmd_range(pud_t pud, unsigned long addr, unsigned long end, pmd_t pmd = READ_ONCE(*pmdp); next = pmd_addr_end(addr, end); - if (pmd_none(pmd) || pmd_trans_splitting(pmd)) + if (pmd_none(pmd)) return 0; if (unlikely(pmd_trans_huge(pmd) || pmd_huge(pmd))) { |