2 files changed, 7 insertions, 7 deletions

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index f82f8db02275..ac61c50a3311 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1285,16 +1285,16 @@ static noinline void reada_for_search(struct btrfs_root *root,
                 }
                 search = btrfs_node_blockptr(node, nr);
                 if ((search >= lowest_read && search <= highest_read) ||
-                    (search < lowest_read && lowest_read - search <= 32768) ||
-                    (search > highest_read && search - highest_read <= 32768)) {
+                    (search < lowest_read && lowest_read - search <= 16384) ||
+                    (search > highest_read && search - highest_read <= 16384)) {
                         readahead_tree_block(root, search, blocksize,
                                      btrfs_node_ptr_generation(node, nr));
                         nread += blocksize;
                 }
                 nscan++;
-                if (path->reada < 2 && (nread > (256 * 1024) || nscan > 32))
+                if (path->reada < 2 && (nread > (64 * 1024) || nscan > 32))
                         break;
-                if(nread > (1024 * 1024) || nscan > 128)
+                if(nread > (256 * 1024) || nscan > 128)
                         break;
 
                 if (search < lowest_read)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 1bb54d69fbb2..3b0e974a9e9c 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -605,7 +605,7 @@ static int btree_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
                 BUG_ON(ret);
 
                 return btrfs_map_bio(BTRFS_I(inode)->root, rw, bio,
-                                     mirror_num, 1);
+                                     mirror_num, 0);
         }
         return btrfs_wq_submit_bio(BTRFS_I(inode)->root->fs_info,
                                    inode, rw, bio, mirror_num, 0,
@@ -1139,11 +1139,11 @@ static int btrfs_congested_fn(void *congested_data, int bdi_bits)
         struct list_head *cur;
         struct btrfs_device *device;
         struct backing_dev_info *bdi;
-
+#if 0
         if ((bdi_bits & (1 << BDI_write_congested)) &&
             btrfs_congested_async(info, 0))
                 return 1;
-
+#endif
         list_for_each(cur, &info->fs_devices->devices) {
                 device = list_entry(cur, struct btrfs_device, dev_list);
                 if (!device->bdev)