diff options
| -rw-r--r-- | include/linux/huge_mm.h | 3 | ||||
| -rw-r--r-- | mm/huge_memory.c | 35 |
2 files changed, 18 insertions, 20 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 8e6c8c42bc3c..df29c8fde36b 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -57,7 +57,8 @@ extern pmd_t *page_check_address_pmd(struct page *page, (transparent_hugepage_flags & \ (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG) && \ ((__vma)->vm_flags & VM_HUGEPAGE))) && \ - !((__vma)->vm_flags & VM_NOHUGEPAGE)) + !((__vma)->vm_flags & VM_NOHUGEPAGE) && \ + !is_vma_temporary_stack(__vma)) #define transparent_hugepage_defrag(__vma) \ ((transparent_hugepage_flags & \ (1<<TRANSPARENT_HUGEPAGE_DEFRAG_FLAG)) || \ diff --git a/mm/huge_memory.c b/mm/huge_memory.c index e62ddb8f24b6..3e29781ee762 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1811,6 +1811,8 @@ static void collapse_huge_page(struct mm_struct *mm, /* VM_PFNMAP vmas may have vm_ops null but vm_file set */ if (!vma->anon_vma || vma->vm_ops || vma->vm_file) goto out; + if (is_vma_temporary_stack(vma)) + goto out; VM_BUG_ON(is_linear_pfn_mapping(vma) || is_pfn_mapping(vma)); pgd = pgd_offset(mm, address); @@ -2032,32 +2034,27 @@ static unsigned int khugepaged_scan_mm_slot(unsigned int pages, if ((!(vma->vm_flags & VM_HUGEPAGE) && !khugepaged_always()) || (vma->vm_flags & VM_NOHUGEPAGE)) { + skip: progress++; continue; } - /* VM_PFNMAP vmas may have vm_ops null but vm_file set */ - if (!vma->anon_vma || vma->vm_ops || vma->vm_file) { - khugepaged_scan.address = vma->vm_end; - progress++; - continue; - } + if (!vma->anon_vma || vma->vm_ops || vma->vm_file) + goto skip; + if (is_vma_temporary_stack(vma)) + goto skip; + VM_BUG_ON(is_linear_pfn_mapping(vma) || is_pfn_mapping(vma)); hstart = (vma->vm_start + ~HPAGE_PMD_MASK) & HPAGE_PMD_MASK; hend = vma->vm_end & HPAGE_PMD_MASK; - if (hstart >= hend) { - progress++; - continue; - } + if (hstart >= hend) + goto skip; + if (khugepaged_scan.address > hend) + goto skip; if (khugepaged_scan.address < hstart) khugepaged_scan.address = hstart; - if (khugepaged_scan.address > hend) { - khugepaged_scan.address = hend + HPAGE_PMD_SIZE; - progress++; - continue; - } - BUG_ON(khugepaged_scan.address & ~HPAGE_PMD_MASK); + VM_BUG_ON(khugepaged_scan.address & ~HPAGE_PMD_MASK); while (khugepaged_scan.address < hend) { int ret; @@ -2086,7 +2083,7 @@ breakouterloop: breakouterloop_mmap_sem: spin_lock(&khugepaged_mm_lock); - BUG_ON(khugepaged_scan.mm_slot != mm_slot); + VM_BUG_ON(khugepaged_scan.mm_slot != mm_slot); /* * Release the current mm_slot if this mm is about to die, or * if we scanned all vmas of this mm. @@ -2241,9 +2238,9 @@ static int khugepaged(void *none) for (;;) { mutex_unlock(&khugepaged_mutex); - BUG_ON(khugepaged_thread != current); + VM_BUG_ON(khugepaged_thread != current); khugepaged_loop(); - BUG_ON(khugepaged_thread != current); + VM_BUG_ON(khugepaged_thread != current); mutex_lock(&khugepaged_mutex); if (!khugepaged_enabled()) |
