diff options
| -rw-r--r-- | mm/memory.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/mm/memory.c b/mm/memory.c index eee7fec3ab54..7abd3899848b 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2369,11 +2369,14 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma, * address space wants to know that the page is about * to become writable */ - if (vma->vm_ops->page_mkwrite && - vma->vm_ops->page_mkwrite(vma, page) < 0) { - fdata.type = VM_FAULT_SIGBUS; - anon = 1; /* no anon but release faulted_page */ - goto out; + if (vma->vm_ops->page_mkwrite) { + unlock_page(page); + if (vma->vm_ops->page_mkwrite(vma, page) < 0) { + fdata.type = VM_FAULT_SIGBUS; + anon = 1; /* no anon but release faulted_page */ + goto out_unlocked; + } + lock_page(page); } } @@ -2425,6 +2428,7 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma, out: unlock_page(faulted_page); +out_unlocked: if (anon) page_cache_release(faulted_page); else if (dirty_page) { |