ALSA: usb-audio: Add sanity checks for endpoint accesses

[cascardo/linux.git] / mm / filemap.c

diff --git a/mm/filemap.c b/mm/filemap.c
index 23edcce..3461d97 100644 (file)
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -446,7 +446,8 @@ int filemap_write_and_wait(struct address_space *mapping)
 {
        int err = 0;
 
-       if (mapping->nrpages) {
+       if ((!dax_mapping(mapping) && mapping->nrpages) ||
+           (dax_mapping(mapping) && mapping->nrexceptional)) {
                err = filemap_fdatawrite(mapping);
                /*
                 * Even if the above returned error, the pages may be
@@ -482,13 +483,8 @@ int filemap_write_and_wait_range(struct address_space *mapping,
 {
        int err = 0;
 
-       if (dax_mapping(mapping) && mapping->nrexceptional) {
-               err = dax_writeback_mapping_range(mapping, lstart, lend);
-               if (err)
-                       return err;
-       }
-
-       if (mapping->nrpages) {
+       if ((!dax_mapping(mapping) && mapping->nrpages) ||
+           (dax_mapping(mapping) && mapping->nrexceptional)) {
                err = __filemap_fdatawrite_range(mapping, lstart, lend,
                                                 WB_SYNC_ALL);
                /* See comment of filemap_write_and_wait() */