| Message ID | 20230223024332.1337578-1-sunke@kylinos.cn (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [RESEND,RFC] mm: pagemap: add vma(VM_PFNMAP) support in pagemap_pte_hole() | expand |
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index af1c49ae11b1..297c7b9dc630 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1400,6 +1400,11 @@ static int pagemap_pte_hole(unsigned long start, unsigned long end, if (vma->vm_flags & VM_SOFTDIRTY) pme = make_pme(0, PM_SOFT_DIRTY); for (; addr < min(end, vma->vm_end); addr += PAGE_SIZE) { + if ((vma->vm_flags & VM_PFNMAP) && vma->vm_pgoff) { + unsigned long pgoff = (addr - vma->vm_start) >> PAGE_SHIFT; + + pme = make_pme(vma->vm_pgoff + pgoff, PM_PRESENT); + } err = add_to_pagemap(addr, &pme, pm); if (err) goto out;
pagemap currently does not support vma(FIXMAP), add support in pagemap_pte_hole(). Signed-off-by: Ke Sun <sunke@kylinos.cn> --- fs/proc/task_mmu.c | 5 +++++ 1 file changed, 5 insertions(+)