btrfs: open code btrfs_after_dev_replace_commit

Too trivial, the purpose can be simply documented in a comment.
Reviewed-by: NOmar Sandoval <osandov@fb.com>
Reviewed-by: NAnand Jain <anand.jain@oracle.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/dev-replace.c

@@ -382,14 +382,6 @@ int btrfs_run_dev_replace(struct btrfs_trans_handle *trans,
 	return ret;
 }
 
-void btrfs_after_dev_replace_commit(struct btrfs_fs_info *fs_info)
-{
-	struct btrfs_dev_replace *dev_replace = &fs_info->dev_replace;
-
-	dev_replace->committed_cursor_left =
-		dev_replace->cursor_left_last_write_of_item;
-}
-
 static char* btrfs_dev_name(struct btrfs_device *device)
 {
 	if (!device || test_bit(BTRFS_DEV_STATE_MISSING, &device->dev_state))

fs/btrfs/dev-replace.h

@@ -11,7 +11,6 @@ struct btrfs_ioctl_dev_replace_args;
 int btrfs_init_dev_replace(struct btrfs_fs_info *fs_info);
 int btrfs_run_dev_replace(struct btrfs_trans_handle *trans,
 			  struct btrfs_fs_info *fs_info);
-void btrfs_after_dev_replace_commit(struct btrfs_fs_info *fs_info);
 int btrfs_dev_replace_by_ioctl(struct btrfs_fs_info *fs_info,
 			    struct btrfs_ioctl_dev_replace_args *args);
 int btrfs_dev_replace_start(struct btrfs_fs_info *fs_info,

fs/btrfs/transaction.c

@@ -1198,7 +1198,10 @@ static noinline int commit_cowonly_roots(struct btrfs_trans_handle *trans)
 
 	list_add_tail(&fs_info->extent_root->dirty_list,
 		      &trans->transaction->switch_commits);
-	btrfs_after_dev_replace_commit(fs_info);
+
+	/* Update dev-replace pointer once everything is committed */
+	fs_info->dev_replace.committed_cursor_left =
+		fs_info->dev_replace.cursor_left_last_write_of_item;
 
 	return 0;
 }