1 files changed, 10 insertions, 3 deletions

diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index e056a22075cf..8945aac31392 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -78,6 +78,8 @@ struct writeback_control {
          */
         unsigned no_cgroup_owner:1;
 
+        unsigned punt_to_cgroup:1;      /* cgrp punting, see __REQ_CGROUP_PUNT */
+
 #ifdef CONFIG_CGROUP_WRITEBACK
         struct bdi_writeback *wb;       /* wb this writeback is issued under */
         struct inode *inode;            /* inode being written out */
@@ -94,12 +96,17 @@ struct writeback_control {
 
 static inline int wbc_to_write_flags(struct writeback_control *wbc)
 {
+        int flags = 0;
+
+        if (wbc->punt_to_cgroup)
+                flags = REQ_CGROUP_PUNT;
+
         if (wbc->sync_mode == WB_SYNC_ALL)
-                return REQ_SYNC;
+                flags |= REQ_SYNC;
         else if (wbc->for_kupdate || wbc->for_background)
-                return REQ_BACKGROUND;
+                flags |= REQ_BACKGROUND;
 
-        return 0;
+        return flags;
 }
 
 static inline struct cgroup_subsys_state *