On Wed 29-11-17 15:23:52, Luis R. Rodriguez wrote:
> This removes superflous freezer calls as they are no longer needed
> as the VFS now performs filesystem freezing/thaw if the filesystem has
> support for it.
>
> The following Coccinelle rule was used as follows:
>
> spatch --sp-file fs-freeze-cleanup.cocci --in-place fs/$FS/
I think your rule misses WQ_FREEZABLE flag for workqueues? That would be
also good to get rid of...
Honza
>
> @ has_freeze_fs @
> identifier super_ops;
> expression freeze_op;
> @@
>
> struct super_operations super_ops = {
> .freeze_fs = freeze_op,
> };
>
> @ remove_set_freezable depends on has_freeze_fs @
> expression time;
> statement S, S2, S3;
> expression task;
> @@
>
> (
> - set_freezable();
> |
> - if (try_to_freeze())
> - continue;
> |
> - try_to_freeze();
> |
> - freezable_schedule();
> + schedule();
> |
> - freezable_schedule_timeout(time);
> + schedule_timeout(time);
> |
> - if (freezing(task)) { S }
> |
> - if (freezing(task)) { S }
> - else
> { S2 }
> |
> - freezing(current)
> )
>
> Generated-by: Coccinelle SmPL
> Signed-off-by: Luis R. Rodriguez <mcg...@kernel.org>
> ---
> fs/xfs/xfs_trans_ail.c | 7 ++-----
> 1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
> index cef89f7127d3..1f3dd10a9d00 100644
> --- a/fs/xfs/xfs_trans_ail.c
> +++ b/fs/xfs/xfs_trans_ail.c
> @@ -513,7 +513,6 @@ xfsaild(
> long tout = 0; /* milliseconds */
>
> current->flags |= PF_MEMALLOC;
> - set_freezable();
>
> while (1) {
> if (tout && tout <= 20)
> @@ -551,19 +550,17 @@ xfsaild(
> if (!xfs_ail_min(ailp) &&
> ailp->xa_target == ailp->xa_target_prev) {
> spin_unlock(&ailp->xa_lock);
> - freezable_schedule();
> + schedule();
> tout = 0;
> continue;
> }
> spin_unlock(&ailp->xa_lock);
>
> if (tout)
> - freezable_schedule_timeout(msecs_to_jiffies(tout));
> + schedule_timeout(msecs_to_jiffies(tout));
>
> __set_current_state(TASK_RUNNING);
>
> - try_to_freeze();
> -
> tout = xfsaild_push(ailp);
> }
>
> --
> 2.15.0
>
--
Jan Kara <j...@suse.com>
SUSE Labs, CR
