diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/vma/include/dup.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/tools/testing/vma/include/dup.h b/tools/testing/vma/include/dup.h index 3962278f577b..a4a0e2b40504 100644 --- a/tools/testing/vma/include/dup.h +++ b/tools/testing/vma/include/dup.h @@ -1417,7 +1417,7 @@ static inline void vma_iter_set(struct vma_iterator *vmi, unsigned long addr) mas_set(&vmi->mas, addr); } -static inline bool vma_is_anonymous(struct vm_area_struct *vma) +static inline bool vma_is_anonymous(const struct vm_area_struct *vma) { return !vma->vm_ops; } @@ -1610,3 +1610,26 @@ static inline pgprot_t vma_get_page_prot(const struct vm_area_struct *vma) { return vma_flags_to_page_prot(vma->flags); } + +static inline pgoff_t __linear_virt_page_index(const struct vm_area_struct *vma, + const unsigned long address) +{ + pgoff_t pgoff; + + pgoff = linear_page_delta(vma, address); + pgoff += vma_start_virt_pgoff(vma); + return pgoff; +} + +static inline pgoff_t linear_virt_page_index(const struct vm_area_struct *vma, + const unsigned long address) +{ + const pgoff_t pgoff = __linear_virt_page_index(vma, address); + + VM_WARN_ON_ONCE(vma_test(vma, VMA_SHARED_BIT)); + /* Account for MAP_PRIVATE-/dev/zero which is only semi-anonymous. */ + if (vma_is_anonymous(vma) && !vma->vm_file) + VM_WARN_ON_ONCE(pgoff != linear_page_index(vma, address)); + + return pgoff; +} |