CacheFiles: Implement invalidation

[karo-tx-linux.git] / fs / cachefiles / rdwr.c

diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c
index 93a0815e04984f9331d046bd947cb326cb231818..2c994885520a392dd5ae498e4ecef71167210881 100644 (file)
--- a/fs/cachefiles/rdwr.c
+++ b/fs/cachefiles/rdwr.c
@@ -174,7 +174,10 @@ static void cachefiles_read_copier(struct fscache_operation *_op)
                _debug("- copy {%lu}", monitor->back_page->index);
 
        recheck:
-               if (PageUptodate(monitor->back_page)) {
+               if (test_bit(FSCACHE_COOKIE_INVALIDATING,
+                            &object->fscache.cookie->flags)) {
+                       error = -ESTALE;
+               } else if (PageUptodate(monitor->back_page)) {
                        copy_highpage(monitor->netfs_page, monitor->back_page);
                        fscache_mark_page_cached(monitor->op,
                                                 monitor->netfs_page);