On Thu, Dec 02, 2021 at 04:48:53PM +0800, Shiyang Ruan wrote:
> @@ -254,6 +254,15 @@ static inline bool dax_mapping(struct address_space
> *mapping)
> {
> return mapping->host && IS_DAX(mapping->host);
> }
> +static inline unsigned long pgoff_address(pgoff_t pgoff,
> + struct vm_area_struct *vma)
Empty lines between functions please.
Also this name is a bit generic for something in dax.h, but then again
it does not seem to be DAX-specific, so it might want to move into
a generic MM header with a proper name and kerneldoc comment.
I think a calling conventions that puts the vma before the pgoff would
seem a little more logical as well.
Last but not least such a move should be in a separate patch.
> +extern int mf_dax_kill_procs(struct address_space *mapping, pgoff_t index,
> + unsigned long count, int mf_flags);
No need for the extern here.
> -static unsigned long dev_pagemap_mapping_shift(struct page *page,
> +static unsigned long dev_pagemap_mapping_shift(unsigned long address,
> struct vm_area_struct *vma)
Passing the vma first would seem more logical again.
> + if (is_zone_device_page(p)) {
> + /*
> + * Since page->mapping is no more used for fsdax, we should
> + * calculate the address in a fsdax way.
> + */
/*
* Since page->mapping is not used for fsdax, we need
* calculate the address based on the vma.
*/
> +static void collect_procs_fsdax(struct page *page, struct address_space
> *mapping,
> + pgoff_t pgoff, struct list_head *to_kill)
Overly long line here.
