[PATCH 6/9] ext4: add support for passing in write hints for buffered writes

[Jens Axboe]

Reviewed-by: Andreas Dilger <adil...@dilger.ca>
Reviewed-by: Martin K. Petersen <martin.peter...@oracle.com>
Signed-off-by: Jens Axboe <ax...@kernel.dk>
---
 fs/ext4/page-io.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 930ca0fc9a0f..02e5a7b8d60b 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -350,6 +350,7 @@ void ext4_io_submit(struct ext4_io_submit *io)
        if (bio) {
                int io_op_flags = io->io_wbc->sync_mode == WB_SYNC_ALL ?
                                  REQ_SYNC : 0;
+               io_op_flags |= inode_hint_to_opf(io->io_end->inode);
                bio_set_op_attrs(io->io_bio, REQ_OP_WRITE, io_op_flags);
                submit_bio(io->io_bio);
        }
@@ -397,6 +398,7 @@ static int io_submit_add_bh(struct ext4_io_submit *io,
                ret = io_submit_init_bio(io, bh);
                if (ret)
                        return ret;
+               io->io_bio->bi_opf |= inode_hint_to_opf(inode);
        }
        ret = bio_add_page(io->io_bio, page, bh->b_size, bh_offset(bh));
        if (ret != bh->b_size)
-- 
2.7.4