Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[karo-tx-linux.git] / mm / memory.c

diff --git a/mm/memory.c b/mm/memory.c
index 482f089765ff3a5fae87e8491c5361e893fb688a..57361708d1a57d7bc11c8f34d269a35c50317dbb 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2650,6 +2650,9 @@ reuse:
                if (!page_mkwrite) {
                        wait_on_page_locked(dirty_page);
                        set_page_dirty_balance(dirty_page, page_mkwrite);
+                       /* file_update_time outside page_lock */
+                       if (vma->vm_file)
+                               file_update_time(vma->vm_file);
                }
                put_page(dirty_page);
                if (page_mkwrite) {
@@ -2667,10 +2670,6 @@ reuse:
                        }
                }
 
-               /* file_update_time outside page_lock */
-               if (vma->vm_file)
-                       file_update_time(vma->vm_file);
-
                return ret;
        }
 
@@ -3339,12 +3338,13 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 
        if (dirty_page) {
                struct address_space *mapping = page->mapping;
+               int dirtied = 0;
 
                if (set_page_dirty(dirty_page))
-                       page_mkwrite = 1;
+                       dirtied = 1;
                unlock_page(dirty_page);
                put_page(dirty_page);
-               if (page_mkwrite && mapping) {
+               if ((dirtied || page_mkwrite) && mapping) {
                        /*
                         * Some device drivers do not set page.mapping but still
                         * dirty their pages
@@ -3353,7 +3353,7 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
                }
 
                /* file_update_time outside page_lock */
-               if (vma->vm_file)
+               if (vma->vm_file && !page_mkwrite)
                        file_update_time(vma->vm_file);
        } else {
                unlock_page(vmf.page);