diff options
| author | Jan Kara <jack@suse.cz> | 2016-12-14 15:07:16 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-14 16:04:09 -0800 |
| commit | 2994302bc8a17180788fac66a47102d338d5d0ec (patch) | |
| tree | 1f575e8b39fdba1dcf647b26739d874c00d9cf7c /mm/khugepaged.c | |
| parent | fe82221f57ea6840a4238a8e077e3f93f257a03f (diff) | |
| download | op-kernel-dev-2994302bc8a17180788fac66a47102d338d5d0ec.zip op-kernel-dev-2994302bc8a17180788fac66a47102d338d5d0ec.tar.gz | |
mm: add orig_pte field into vm_fault
Add orig_pte field to vm_fault structure to allow ->page_mkwrite
handlers to fully handle the fault.
This also allows us to save some passing of extra arguments around.
Link: http://lkml.kernel.org/r/1479460644-25076-8-git-send-email-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/khugepaged.c')
| -rw-r--r-- | mm/khugepaged.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index f062d54..7434a63 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -875,7 +875,6 @@ static bool __collapse_huge_page_swapin(struct mm_struct *mm, unsigned long address, pmd_t *pmd, int referenced) { - pte_t pteval; int swapped_in = 0, ret = 0; struct vm_fault vmf = { .vma = vma, @@ -893,11 +892,11 @@ static bool __collapse_huge_page_swapin(struct mm_struct *mm, vmf.pte = pte_offset_map(pmd, address); for (; vmf.address < address + HPAGE_PMD_NR*PAGE_SIZE; vmf.pte++, vmf.address += PAGE_SIZE) { - pteval = *vmf.pte; - if (!is_swap_pte(pteval)) + vmf.orig_pte = *vmf.pte; + if (!is_swap_pte(vmf.orig_pte)) continue; swapped_in++; - ret = do_swap_page(&vmf, pteval); + ret = do_swap_page(&vmf); /* do_swap_page returns VM_FAULT_RETRY with released mmap_sem */ if (ret & VM_FAULT_RETRY) { |
