btrfs: extent-tree: Use ref_node to replace unneeded parameters in __inc_extent_ref...

__btrfs_inc_extent_ref() and __btrfs_free_extent() have already had too
many parameters, but three of them can be extracted from
btrfs_delayed_ref_node struct.

So use btrfs_delayed_ref_node struct as a single parameter to replace
the bytenr/num_byte/no_quota parameters.

The real objective of this patch is to allow btrfs_qgroup_record_ref()
get the delayed_ref_node in incoming qgroup patches.

Other functions calling btrfs_qgroup_record_ref() are not affected since
the rest will only add/sub exclusive extents, where node is not used.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index adf0eedde50273d017b78522f2ac68e0d2c3b3db..236a12f7d5f7377422e4748c76c2ba3865315c70 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -79,11 +79,10 @@ static int update_block_group(struct btrfs_trans_handle *trans,
                              u64 num_bytes, int alloc);
 static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
                                struct btrfs_root *root,
-                               u64 bytenr, u64 num_bytes, u64 parent,
+                               struct btrfs_delayed_ref_node *node, u64 parent,
                                u64 root_objectid, u64 owner_objectid,
                                u64 owner_offset, int refs_to_drop,
-                               struct btrfs_delayed_extent_op *extra_op,
-                               int no_quota);
+                               struct btrfs_delayed_extent_op *extra_op);
 static void __run_delayed_extent_op(struct btrfs_delayed_extent_op *extent_op,
                                    struct extent_buffer *leaf,
                                    struct btrfs_extent_item *ei);
@@ -1967,10 +1966,9 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
 
 static int __btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
                                  struct btrfs_root *root,
-                                 u64 bytenr, u64 num_bytes,
+                                 struct btrfs_delayed_ref_node *node,
                                  u64 parent, u64 root_objectid,
                                  u64 owner, u64 offset, int refs_to_add,
-                                 int no_quota,
                                  struct btrfs_delayed_extent_op *extent_op)
 {
        struct btrfs_fs_info *fs_info = root->fs_info;
@@ -1978,8 +1976,11 @@ static int __btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
        struct extent_buffer *leaf;
        struct btrfs_extent_item *item;
        struct btrfs_key key;
+       u64 bytenr = node->bytenr;
+       u64 num_bytes = node->num_bytes;
        u64 refs;
        int ret;
+       int no_quota = node->no_quota;
        enum btrfs_qgroup_operation_type type = BTRFS_QGROUP_OPER_ADD_EXCL;
 
        path = btrfs_alloc_path();
@@ -2087,17 +2088,15 @@ static int run_delayed_data_ref(struct btrfs_trans_handle *trans,
                                                 ref->objectid, ref->offset,
                                                 &ins, node->ref_mod);
        } else if (node->action == BTRFS_ADD_DELAYED_REF) {
-               ret = __btrfs_inc_extent_ref(trans, root, node->bytenr,
-                                            node->num_bytes, parent,
+               ret = __btrfs_inc_extent_ref(trans, root, node, parent,
                                             ref_root, ref->objectid,
                                             ref->offset, node->ref_mod,
-                                            node->no_quota, extent_op);
+                                            extent_op);
        } else if (node->action == BTRFS_DROP_DELAYED_REF) {
-               ret = __btrfs_free_extent(trans, root, node->bytenr,
-                                         node->num_bytes, parent,
+               ret = __btrfs_free_extent(trans, root, node, parent,
                                          ref_root, ref->objectid,
                                          ref->offset, node->ref_mod,
-                                         extent_op, node->no_quota);
+                                         extent_op);
        } else {
                BUG();
        }
@@ -2255,15 +2254,14 @@ static int run_delayed_tree_ref(struct btrfs_trans_handle *trans,
                                                ref->level, &ins,
                                                node->no_quota);
        } else if (node->action == BTRFS_ADD_DELAYED_REF) {
-               ret = __btrfs_inc_extent_ref(trans, root, node->bytenr,
-                                            node->num_bytes, parent, ref_root,
-                                            ref->level, 0, 1, node->no_quota,
+               ret = __btrfs_inc_extent_ref(trans, root, node,
+                                            parent, ref_root,
+                                            ref->level, 0, 1,
                                             extent_op);
        } else if (node->action == BTRFS_DROP_DELAYED_REF) {
-               ret = __btrfs_free_extent(trans, root, node->bytenr,
-                                         node->num_bytes, parent, ref_root,
-                                         ref->level, 0, 1, extent_op,
-                                         node->no_quota);
+               ret = __btrfs_free_extent(trans, root, node,
+                                         parent, ref_root,
+                                         ref->level, 0, 1, extent_op);
        } else {
                BUG();
        }
@@ -6119,11 +6117,10 @@ static void add_pinned_bytes(struct btrfs_fs_info *fs_info, u64 num_bytes,
 
 static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
                                struct btrfs_root *root,
-                               u64 bytenr, u64 num_bytes, u64 parent,
+                               struct btrfs_delayed_ref_node *node, u64 parent,
                                u64 root_objectid, u64 owner_objectid,
                                u64 owner_offset, int refs_to_drop,
-                               struct btrfs_delayed_extent_op *extent_op,
-                               int no_quota)
+                               struct btrfs_delayed_extent_op *extent_op)
 {
        struct btrfs_key key;
        struct btrfs_path *path;
@@ -6137,8 +6134,11 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
        int extent_slot = 0;
        int found_extent = 0;
        int num_to_del = 1;
+       int no_quota = node->no_quota;
        u32 item_size;
        u64 refs;
+       u64 bytenr = node->bytenr;
+       u64 num_bytes = node->num_bytes;
        int last_ref = 0;
        enum btrfs_qgroup_operation_type type = BTRFS_QGROUP_OPER_SUB_EXCL;
        bool skinny_metadata = btrfs_fs_incompat(root->fs_info,