diff options
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/mm/memory.c b/mm/memory.c index cf74f7ca911b..02504cd4ca0e 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2844,9 +2844,8 @@ static int __do_fault(struct vm_fault *vmf) int ret; ret = vma->vm_ops->fault(vma, vmf); - if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY))) - return ret; - if (ret & VM_FAULT_DAX_LOCKED) + if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY | + VM_FAULT_DAX_LOCKED | VM_FAULT_DONE_COW))) return ret; if (unlikely(PageHWPoison(vmf->page))) { @@ -3226,7 +3225,6 @@ static int do_read_fault(struct vm_fault *vmf) static int do_cow_fault(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma; - struct mem_cgroup *memcg; int ret; if (unlikely(anon_vma_prepare(vma))) @@ -3237,7 +3235,7 @@ static int do_cow_fault(struct vm_fault *vmf) return VM_FAULT_OOM; if (mem_cgroup_try_charge(vmf->cow_page, vma->vm_mm, GFP_KERNEL, - &memcg, false)) { + &vmf->memcg, false)) { put_page(vmf->cow_page); return VM_FAULT_OOM; } @@ -3245,12 +3243,14 @@ static int do_cow_fault(struct vm_fault *vmf) ret = __do_fault(vmf); if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY))) goto uncharge_out; + if (ret & VM_FAULT_DONE_COW) + return ret; if (!(ret & VM_FAULT_DAX_LOCKED)) copy_user_highpage(vmf->cow_page, vmf->page, vmf->address, vma); __SetPageUptodate(vmf->cow_page); - ret |= alloc_set_pte(vmf, memcg, vmf->cow_page); + ret |= alloc_set_pte(vmf, vmf->memcg, vmf->cow_page); if (vmf->pte) pte_unmap_unlock(vmf->pte, vmf->ptl); if (!(ret & VM_FAULT_DAX_LOCKED)) { @@ -3263,7 +3263,7 @@ static int do_cow_fault(struct vm_fault *vmf) goto uncharge_out; return ret; uncharge_out: - mem_cgroup_cancel_charge(vmf->cow_page, memcg, false); + mem_cgroup_cancel_charge(vmf->cow_page, vmf->memcg, false); put_page(vmf->cow_page); return ret; } |