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Revert "ANDROID: mm: skip pte_alloc during speculative page fault"

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This reverts commit b12d6d9506.

Change-Id: I0891749da9dc05c7f9a3ad909a9d054e74a45e2b
Signed-off-by: Alexander Winkowski <dereference23@outlook.com>
This commit is contained in:
Alexander Winkowski 2024-01-12 05:00:10 +00:00
commit f3fcee6d90
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1 changed files with 0 additions and 5 deletions
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5
mm/memory.c
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@ -3336,10 +3336,6 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
if (vmf->vma_flags & VM_SHARED)
return VM_FAULT_SIGBUS;
/* Do not check unstable pmd, if it's changed will retry later */
if (vmf->flags & FAULT_FLAG_SPECULATIVE)
goto skip_pmd_checks;
/*
* Use pte_alloc() instead of pte_alloc_map(). We can't run
* pte_offset_map() on pmds where a huge pmd might be created
@ -3357,7 +3353,6 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
if (unlikely(pmd_trans_unstable(vmf->pmd)))
return 0;
skip_pmd_checks:
/* Use the zero-page for reads */
if (!(vmf->flags & FAULT_FLAG_WRITE) &&
!mm_forbids_zeropage(vma->vm_mm)) {