On Wed, Nov 21, 2018 at 01:59:09PM -0500, Josef Bacik wrote:
> From: Josef Bacik <jbacik@xxxxxx>
>
> The cleanup_extent_op function actually would run the extent_op if it
> needed running, which made the name sort of a misnomer. Change it to
> run_and_cleanup_extent_op, and move the actual cleanup work to
> cleanup_extent_op so it can be used by check_ref_cleanup() in order to
> unify the extent op handling.
>
> Signed-off-by: Josef Bacik <jbacik@xxxxxx>
> ---
> fs/btrfs/extent-tree.c | 36 +++++++++++++++++++++++-------------
> 1 file changed, 23 insertions(+), 13 deletions(-)
>
> diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
> index e3ed3507018d..8a776dc9cb38 100644
> --- a/fs/btrfs/extent-tree.c
> +++ b/fs/btrfs/extent-tree.c
> @@ -2424,19 +2424,33 @@ static void unselect_delayed_ref_head(struct btrfs_delayed_ref_root *delayed_ref
> btrfs_delayed_ref_unlock(head);
> }
>
> -static int cleanup_extent_op(struct btrfs_trans_handle *trans,
> - struct btrfs_delayed_ref_head *head)
> +static struct btrfs_delayed_extent_op *
> +cleanup_extent_op(struct btrfs_trans_handle *trans,
> + struct btrfs_delayed_ref_head *head)
Please keep the type and function name on one line, if the arguments
would overflow, then move it on the next line and un-indent as
necessary. I fix such things when merging, no need to resend.
> {
> struct btrfs_delayed_extent_op *extent_op = head->extent_op;
> - int ret;
>
> if (!extent_op)
> - return 0;
> - head->extent_op = NULL;
> + return NULL;
> +
> if (head->must_insert_reserved) {
> + head->extent_op = NULL;
> btrfs_free_delayed_extent_op(extent_op);
> - return 0;
> + return NULL;
> }
> + return extent_op;
> +}
> +
> +static int run_and_cleanup_extent_op(struct btrfs_trans_handle *trans,
> + struct btrfs_delayed_ref_head *head)
> +{
> + struct btrfs_delayed_extent_op *extent_op =
> + cleanup_extent_op(trans, head);
I prefer to do non-trivial initializations in the statement block, it's
easy to overlook that in among the declarations. Simple variable init,
pointer dereferenes or using simple helpers is fine but cleanup_extent_op
does not seem to fit to that. It's in other patches too so I can update
that unless there are other things that would need a resend.
