1 files changed, 16 insertions, 2 deletions

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 3fe782d70a71..0b3064079fa5 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -284,7 +284,17 @@ __sync_single_inode(struct inode *inode, struct writeback_control *wbc)
                                  * soon as the queue becomes uncongested.
                                  */
                                 inode->i_state |= I_DIRTY_PAGES;
-                                requeue_io(inode);
+                                if (wbc->nr_to_write <= 0) {
+                                        /*
+                                         * slice used up: queue for next turn
+                                         */
+                                        requeue_io(inode);
+                                } else {
+                                        /*
+                                         * somehow blocked: retry later
+                                         */
+                                        redirty_tail(inode);
+                                }
                         } else {
                                 /*
                                  * Otherwise fully redirty the inode so that
@@ -468,8 +478,12 @@ sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc)
                 iput(inode);
                 cond_resched();
                 spin_lock(&inode_lock);
-                if (wbc->nr_to_write <= 0)
+                if (wbc->nr_to_write <= 0) {
+                        wbc->more_io = 1;
                         break;
+                }
+                if (!list_empty(&sb->s_more_io))
+                        wbc->more_io = 1;
         }
         return;         /* Leave any unwritten inodes on s_io */
 }