[PATCH 5/8]fs/ext4: Evalue bio->bi_rw after calling bio_alloc() and before calling bio_add_page().

[majianpeng]

Because call bio_alloc, the bi_rw is zero by default,but in
bio_add_page used the bi_rw. So evalue bi_rw.

Signed-off-by: Jianpeng Ma <majianpeng at gmail.com>
---
 fs/ext4/page-io.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index dcdeef1..c875502 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -304,6 +304,7 @@ static int io_submit_init(struct ext4_io_submit *io,
 	io->io_bio = bio;
 	io->io_op = (wbc->sync_mode == WB_SYNC_ALL ?  WRITE_SYNC : WRITE);
 	io->io_next_block = bh->b_blocknr;
+	bio->bi_rw = io->io_op;
 	return 0;
 }
 
-- 
1.7.9.5