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Subject[PATCH 07/13] writeback: defer writeback on locked inode
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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