mm: flush dcache before writing into page to avoid alias

[sfrench/cifs-2.6.git] / fs / fuse / file.c

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index c18913a777ae3865148c9bbd679d0c09ff092f4f..a9f5e137f1d31547f86bbfdb87df11c07daf963f 100644 (file)
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -828,6 +828,9 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req,
                if (!page)
                        break;
 
+               if (mapping_writably_mapped(mapping))
+                       flush_dcache_page(page);
+
                pagefault_disable();
                tmp = iov_iter_copy_from_user_atomic(page, ii, offset, bytes);
                pagefault_enable();