mm: only enforce stable page writes if the backing device requires it

[linux-block.git] / mm / filemap.c

diff --git a/mm/filemap.c b/mm/filemap.c
index 24a7ea583f0cf4039525d824ac047f5f9d7eddb0..c610076c30e137118872f74bec80cfa0592e5f6e 100644 (file)
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1728,6 +1728,7 @@ int filemap_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
         * see the dirty page and writeprotect it again.
         */
        set_page_dirty(page);
+       wait_for_stable_page(page);
 out:
        sb_end_pagefault(inode->i_sb);
        return ret;
@@ -2274,7 +2275,7 @@ repeat:
                return NULL;
        }
 found:
-       wait_on_page_writeback(page);
+       wait_for_stable_page(page);
        return page;
 }
 EXPORT_SYMBOL(grab_cache_page_write_begin);