Convert to requeue_io_wait() for case:

	inode is locked.

Cc: Michael Rubin <mrubin@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn>
---
 fs/fs-writeback.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)

--- linux-mm.orig/fs/fs-writeback.c
+++ linux-mm/fs/fs-writeback.c
@@ -329,12 +329,9 @@ __writeback_single_inode(struct inode *i
 	if ((wbc->sync_mode != WB_SYNC_ALL) && (inode->i_state & I_SYNC)) {
 		/*
 		 * We're skipping this inode because it's locked, and we're not
-		 * doing writeback-for-data-integrity.  Move it to s_more_io so
-		 * that writeback can proceed with the other inodes on s_io.
-		 * We'll have another go at writing back this inode when we
-		 * completed a full scan of s_io.
+		 * doing writeback-for-data-integrity. Recheck it after a while.
 		 */
-		requeue_io(inode);
+		requeue_io_wait(inode);
 		return 0;
 	}
 

-- 
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