Patch series "mm: remove cgroup_throttle_swaprate() completely", v2.

Convert all the caller functions of cgroup_throttle_swaprate() to use
folios, and use folio_throttle_swaprate(), which allows us to remove
cgroup_throttle_swaprate() completely.


This patch (of 7):

Convert from page to folio within __do_huge_pmd_anonymous_page(), as we
need the precise page which is to be stored at this PTE in the folio, the
function still keep a page as the parameter.

Link: https://lkml.kernel.org/r/20230302115835.105364-1-wangkefeng.wang@huawei.com
Link: https://lkml.kernel.org/r/20230302115835.105364-2-wangkefeng.wang@huawei.comSigned-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>