1 files changed, 5 insertions, 0 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index fec18b43c2c..a6b83744b05 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -579,6 +579,10 @@ int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode,
         async->bio_flags = bio_flags;
 
         atomic_inc(&fs_info->nr_async_submits);
+
+        if (rw & (1 << BIO_RW_SYNCIO))
+                btrfs_set_work_high_prio(&async->work);
+
         btrfs_queue_worker(&fs_info->workers, &async->work);
 #if 0
         int limit = btrfs_async_submit_limit(fs_info);
@@ -656,6 +660,7 @@ static int btree_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
                 return btrfs_map_bio(BTRFS_I(inode)->root, rw, bio,
                                      mirror_num, 0);
         }
+
         /*
          * kthread helpers are used to submit writes so that checksumming
          * can happen in parallel across all CPUs