diff options
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 27 |
1 files changed, 12 insertions, 15 deletions
diff --git a/mm/memory.c b/mm/memory.c index ad452898e6c00..82e7689e3059e 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2102,8 +2102,7 @@ static void fault_dirty_shared_page(struct vm_area_struct *vma, * case, all we need to do here is to mark the page as writable and update * any related book-keeping. */ -static inline int wp_page_reuse(struct vm_fault *vmf, - int page_mkwrite, int dirty_shared) +static inline void wp_page_reuse(struct vm_fault *vmf) __releases(vmf->ptl) { struct vm_area_struct *vma = vmf->vma; @@ -2123,16 +2122,6 @@ static inline int wp_page_reuse(struct vm_fault *vmf, if (ptep_set_access_flags(vma, vmf->address, vmf->pte, entry, 1)) update_mmu_cache(vma, vmf->address, vmf->pte); pte_unmap_unlock(vmf->pte, vmf->ptl); - - if (dirty_shared) { - if (!page_mkwrite) - lock_page(page); - - fault_dirty_shared_page(vma, page); - put_page(page); - } - - return VM_FAULT_WRITE; } /* @@ -2307,7 +2296,8 @@ static int wp_pfn_shared(struct vm_fault *vmf) return 0; } } - return wp_page_reuse(vmf, 0, 0); + wp_page_reuse(vmf); + return VM_FAULT_WRITE; } static int wp_page_shared(struct vm_fault *vmf) @@ -2345,7 +2335,13 @@ static int wp_page_shared(struct vm_fault *vmf) page_mkwrite = 1; } - return wp_page_reuse(vmf, page_mkwrite, 1); + wp_page_reuse(vmf); + if (!page_mkwrite) + lock_page(vmf->page); + fault_dirty_shared_page(vma, vmf->page); + put_page(vmf->page); + + return VM_FAULT_WRITE; } /* @@ -2420,7 +2416,8 @@ static int do_wp_page(struct vm_fault *vmf) page_move_anon_rmap(vmf->page, vma); } unlock_page(vmf->page); - return wp_page_reuse(vmf, 0, 0); + wp_page_reuse(vmf); + return VM_FAULT_WRITE; } unlock_page(vmf->page); } else if (unlikely((vma->vm_flags & (VM_WRITE|VM_SHARED)) == |