Re: [PATCH 08/22] memremap: pass a struct dev_pagemap to ->kill

[Jason Gunthorpe]

On Thu, Jun 13, 2019 at 11:43:11AM +0200, Christoph Hellwig wrote:
> Passing the actual typed structure leads to more understandable code
> vs the actual references.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
>  drivers/dax/device.c              | 7 +++----
>  drivers/nvdimm/pmem.c             | 6 +++---
>  drivers/pci/p2pdma.c              | 6 +++---
>  include/linux/memremap.h          | 2 +-
>  kernel/memremap.c                 | 4 ++--
>  mm/hmm.c                          | 4 ++--
>  tools/testing/nvdimm/test/iomap.c | 6 ++----
>  7 files changed, 16 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/dax/device.c b/drivers/dax/device.c
> index 4adab774dade..e23fa1bd8c97 100644
> +++ b/drivers/dax/device.c
> @@ -37,13 +37,12 @@ static void dev_dax_percpu_exit(void *data)
>  	percpu_ref_exit(ref);
>  }
>  
> -static void dev_dax_percpu_kill(struct percpu_ref *data)
> +static void dev_dax_percpu_kill(struct dev_pagemap *pgmap)
>  {

Looks like it was always like this, but I also can't see a reason to
use the percpu as a handle for a dev_pagemap callback.

Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>

Jason