Re: [PATCH v4 1/2] mm: store zero pages to be swapped out in a bitmap

[Yosry Ahmed]

[..]
> /*
>  * Check if all entries have consistent zeromap status, return true if
>  * all entries are zeromap or non-zeromap, else return false;
>  */
> static inline bool swap_zeromap_entries_check(swp_entry_t entry, int nr)

Let's also rename this now to swap_zeromap_entries_same(), "check" is
a little vague.

> {
>         struct swap_info_struct *sis = swp_swap_info(entry);
>         unsigned long start = swp_offset(entry);
>         unsigned long end = start + *nr;
>
>         if (find_next_bit(sis->zeromap, end, start) == end)
>                 return true;
>         if (find_next_zero_bit(sis->zeromap, end, start) == end)
>                 return true;
>
>         return false;
> }
>