[PATCH 3/8] writeback: use WRITE_BG for kupdate and background writeback

From: Jens Axboe
Date: Wed Oct 26 2016 - 16:54:44 EST


If we're doing background type writes, then use the appropriate
write command for that.

Signed-off-by: Jens Axboe <axboe@xxxxxx>
---
include/linux/writeback.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 78b87c517b5f..f12f0b34daca 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -104,6 +104,8 @@ static inline int wbc_to_write_flags(struct writeback_control *wbc)
{
if (wbc->sync_mode == WB_SYNC_ALL)
return WRITE_SYNC;
+ else if (wbc->for_kupdate || wbc->for_background)
+ return WRITE_BG;

return 0;
}
--
2.7.4