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Redirtied inodes could be seen in really fast writes.
They should really be synced as soon as possible.
redirty_tail() could delay the inode for up to 30s.
Kill the delay by using requeue_io() instead.
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 | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
--- linux-mm.orig/fs/fs-writeback.c
+++ linux-mm/fs/fs-writeback.c
@@ -294,7 +294,7 @@ __sync_single_inode(struct inode *inode,
* Someone redirtied the inode while were writing back
* the pages.
*/
- redirty_tail(inode);
+ requeue_io(inode);
} else if (atomic_read(&inode->i_count)) {
/*
* The inode is clean, inuse
--
--
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