btrfs: pass walk_control structure to overwrite_item()

Instead of passing the transaction and subvolume root as arguments to
overwrite_item(), pass the walk_control structure as we can grab them
from the structure. This reduces the number of arguments passed and it's
going to be needed by an incoming change that improves error reporting
for log replay.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 01a0f7cbcd4b00ca3f47df0aaf5f7a02743da788..2060f0d99f6e109b589b032c9b584a706ce637c4 100644 (file)
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -410,12 +410,13 @@ static int process_one_buffer(struct extent_buffer *eb,
  *
  * If the key isn't in the destination yet, a new item is inserted.
  */
-static int overwrite_item(struct btrfs_trans_handle *trans,
-                         struct btrfs_root *root,
+static int overwrite_item(struct walk_control *wc,
                          struct btrfs_path *path,
                          struct extent_buffer *eb, int slot,
                          struct btrfs_key *key)
 {
+       struct btrfs_trans_handle *trans = wc->trans;
+       struct btrfs_root *root = wc->root;
        int ret;
        u32 item_size;
        u64 saved_i_size = 0;
@@ -739,7 +740,7 @@ static noinline int replay_one_extent(struct walk_control *wc,
 
        if (found_type == BTRFS_FILE_EXTENT_INLINE) {
                /* inline extents are easy, we just overwrite them */
-               ret = overwrite_item(trans, root, path, eb, slot, key);
+               ret = overwrite_item(wc, path, eb, slot, key);
                if (ret)
                        goto out;
                goto update_inode;
@@ -1607,7 +1608,7 @@ next:
                goto out;
 
        /* finally write the back reference in the inode */
-       ret = overwrite_item(trans, root, path, eb, slot, key);
+       ret = overwrite_item(wc, path, eb, slot, key);
 out:
        btrfs_release_path(path);
        kfree(name.name);
@@ -2657,7 +2658,7 @@ static int replay_one_buffer(struct extent_buffer *eb,
                                if (ret)
                                        break;
                        }
-                       ret = overwrite_item(trans, root, path, eb, i, &key);
+                       ret = overwrite_item(wc, path, eb, i, &key);
                        if (ret)
                                break;
 
@@ -2721,7 +2722,7 @@ static int replay_one_buffer(struct extent_buffer *eb,
 
                /* these keys are simply copied */
                if (key.type == BTRFS_XATTR_ITEM_KEY) {
-                       ret = overwrite_item(trans, root, path, eb, i, &key);
+                       ret = overwrite_item(wc, path, eb, i, &key);
                        if (ret)
                                break;
                } else if (key.type == BTRFS_INODE_REF_KEY ||