[PATCH 10/11] btrfs: add support for passing in write hints for buffered writes

[Jens Axboe]

Reviewed-by: Andreas Dilger <adil...@dilger.ca>
Signed-off-by: Chris Mason <c...@fb.com>
Signed-off-by: Jens Axboe <ax...@kernel.dk>
---
 fs/btrfs/extent_io.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index d3619e010005..2bc2dfca87c2 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2826,6 +2826,7 @@ static int submit_extent_page(int op, int op_flags, 
struct extent_io_tree *tree,
        bio_add_page(bio, page, page_size, offset);
        bio->bi_end_io = end_io_func;
        bio->bi_private = tree;
+       op_flags |= bio_op_write_hint(inode_write_hint(page->mapping->host));
        bio_set_op_attrs(bio, op, op_flags);
        if (wbc) {
                wbc_init_bio(wbc, bio);
-- 
2.7.4