1 files changed, 15 insertions, 13 deletions

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 59bb1764273d..cfb55434a469 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1174,6 +1174,8 @@ static int clone_backref_node(struct btrfs_trans_handle *trans,
                         list_add_tail(&new_edge->list[UPPER],
                                       &new_node->lower);
                 }
+        } else {
+                list_add_tail(&new_node->lower, &cache->leaves);
         }
 
         rb_node = tree_insert(&cache->rb_root, new_node->bytenr,
@@ -2041,8 +2043,7 @@ static noinline_for_stack int merge_reloc_root(struct reloc_control *rc,
                 BUG_ON(IS_ERR(trans));
                 trans->block_rsv = rc->block_rsv;
 
-                ret = btrfs_block_rsv_check(trans, root, rc->block_rsv,
-                                            min_reserved, 0);
+                ret = btrfs_block_rsv_refill(root, rc->block_rsv, min_reserved);
                 if (ret) {
                         BUG_ON(ret != -EAGAIN);
                         ret = btrfs_commit_transaction(trans, root);
@@ -2152,8 +2153,7 @@ int prepare_to_merge(struct reloc_control *rc, int err)
 again:
         if (!err) {
                 num_bytes = rc->merging_rsv_size;
-                ret = btrfs_block_rsv_add(NULL, root, rc->block_rsv,
-                                          num_bytes);
+                ret = btrfs_block_rsv_add(root, rc->block_rsv, num_bytes);
                 if (ret)
                         err = ret;
         }
@@ -2427,7 +2427,7 @@ static int reserve_metadata_space(struct btrfs_trans_handle *trans,
         num_bytes = calcu_metadata_size(rc, node, 1) * 2;
 
         trans->block_rsv = rc->block_rsv;
-        ret = btrfs_block_rsv_add(trans, root, rc->block_rsv, num_bytes);
+        ret = btrfs_block_rsv_add(root, rc->block_rsv, num_bytes);
         if (ret) {
                 if (ret == -EAGAIN)
                         rc->commit_transaction = 1;
@@ -2922,6 +2922,7 @@ static int relocate_file_extent_cluster(struct inode *inode,
         unsigned long last_index;
         struct page *page;
         struct file_ra_state *ra;
+        gfp_t mask = btrfs_alloc_write_mask(inode->i_mapping);
         int nr = 0;
         int ret = 0;
 
@@ -2946,7 +2947,9 @@ static int relocate_file_extent_cluster(struct inode *inode,
         index = (cluster->start - offset) >> PAGE_CACHE_SHIFT;
         last_index = (cluster->end - offset) >> PAGE_CACHE_SHIFT;
         while (index <= last_index) {
+                mutex_lock(&inode->i_mutex);
                 ret = btrfs_delalloc_reserve_metadata(inode, PAGE_CACHE_SIZE);
+                mutex_unlock(&inode->i_mutex);
                 if (ret)
                         goto out;
 
@@ -2956,7 +2959,7 @@ static int relocate_file_extent_cluster(struct inode *inode,
                                                   ra, NULL, index,
                                                   last_index + 1 - index);
                         page = find_or_create_page(inode->i_mapping, index,
-                                                   GFP_NOFS);
+                                                   mask);
                         if (!page) {
                                 btrfs_delalloc_release_metadata(inode,
                                                         PAGE_CACHE_SIZE);
@@ -3323,8 +3326,11 @@ static int find_data_references(struct reloc_control *rc,
         }
 
         key.objectid = ref_objectid;
-        key.offset = ref_offset;
         key.type = BTRFS_EXTENT_DATA_KEY;
+        if (ref_offset > ((u64)-1 << 32))
+                key.offset = 0;
+        else
+                key.offset = ref_offset;
 
         path->search_commit_root = 1;
         path->skip_locking = 1;
@@ -3645,14 +3651,11 @@ int prepare_to_relocate(struct reloc_control *rc)
          * btrfs_init_reloc_root will use them when there
          * is no reservation in transaction handle.
          */
-        ret = btrfs_block_rsv_add(NULL, rc->extent_root, rc->block_rsv,
+        ret = btrfs_block_rsv_add(rc->extent_root, rc->block_rsv,
                                   rc->extent_root->nodesize * 256);
         if (ret)
                 return ret;
 
-        rc->block_rsv->refill_used = 1;
-        btrfs_add_durable_block_rsv(rc->extent_root->fs_info, rc->block_rsv);
-
         memset(&rc->cluster, 0, sizeof(rc->cluster));
         rc->search_start = rc->block_group->key.objectid;
         rc->extents_found = 0;
@@ -3777,8 +3780,7 @@ restart:
                         }
                 }
 
-                ret = btrfs_block_rsv_check(trans, rc->extent_root,
-                                            rc->block_rsv, 0, 5);
+                ret = btrfs_block_rsv_check(rc->extent_root, rc->block_rsv, 5);
                 if (ret < 0) {
                         if (ret != -EAGAIN) {
                                 err = ret;