+ mm-swap-remove-unneeded-cgroup_throttle_swaprate.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm: swap: remove unneeded cgroup_throttle_swaprate()
has been added to the -mm mm-unstable branch.  Its filename is
     mm-swap-remove-unneeded-cgroup_throttle_swaprate.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-swap-remove-unneeded-cgroup_throttle_swaprate.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: mm: swap: remove unneeded cgroup_throttle_swaprate()
Date: Thu, 12 Jan 2023 16:30:06 +0800

All the callers of cgroup_throttle_swaprate() are converted to
folio_throttle_swaprate(), so make __cgroup_throttle_swaprate() to take a
folio, and drop unused cgroup_throttle_swaprate().

Link: https://lkml.kernel.org/r/20230112083006.163393-8-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/swap.h |   12 ++++--------
 mm/swapfile.c        |    4 ++--
 2 files changed, 6 insertions(+), 10 deletions(-)

--- a/include/linux/swap.h~mm-swap-remove-unneeded-cgroup_throttle_swaprate
+++ a/include/linux/swap.h
@@ -641,22 +641,18 @@ extern atomic_t zswap_stored_pages;
 #endif
 
 #if defined(CONFIG_SWAP) && defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP)
-extern void __cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask);
-static inline  void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask)
+extern void __cgroup_throttle_swaprate(struct folio *folio, gfp_t gfp_mask);
+static inline void folio_throttle_swaprate(struct folio *folio, gfp_t gfp_mask)
 {
 	if (mem_cgroup_disabled())
 		return;
-	__cgroup_throttle_swaprate(page, gfp_mask);
+	__cgroup_throttle_swaprate(folio, gfp_mask);
 }
 #else
-static inline void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask)
+static inline void folio_throttle_swaprate(struct folio *folio, gfp_t gfp_mask)
 {
 }
 #endif
-static inline void folio_throttle_swaprate(struct folio *folio, gfp_t gfp)
-{
-	cgroup_throttle_swaprate(&folio->page, gfp);
-}
 
 #if defined(CONFIG_MEMCG) && defined(CONFIG_SWAP)
 void mem_cgroup_swapout(struct folio *folio, swp_entry_t entry);
--- a/mm/swapfile.c~mm-swap-remove-unneeded-cgroup_throttle_swaprate
+++ a/mm/swapfile.c
@@ -3636,10 +3636,10 @@ static void free_swap_count_continuation
 }
 
 #if defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP)
-void __cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask)
+void __cgroup_throttle_swaprate(struct folio *folio, gfp_t gfp_mask)
 {
 	struct swap_info_struct *si, *next;
-	int nid = page_to_nid(page);
+	int nid = folio_nid(folio);
 
 	if (!(gfp_mask & __GFP_IO))
 		return;
_

Patches currently in -mm which might be from wangkefeng.wang@huawei.com are

mm-hwposion-support-recovery-from-ksm_might_need_to_copy.patch
mm-hwposion-support-recovery-from-ksm_might_need_to_copy-v3.patch
mm-huge_memory-convert-madvise_free_huge_pmd-to-use-a-folio.patch
mm-swap-convert-mark_page_lazyfree-to-folio_mark_lazyfree.patch
mm-huge_memory-convert-split_huge_pages_all-to-use-a-folio.patch
mm-page_idle-convert-page-idle-to-use-a-folio.patch
mm-damon-introduce-damon_get_folio.patch
mm-damon-convert-damon_ptep-pmdp_mkold-to-use-a-folio.patch
mm-damon-paddr-convert-damon_pa_-to-use-a-folio.patch
mm-damon-vaddr-convert-damon_young_pmd_entry-to-use-a-folio.patch
mm-damon-remove-unneeded-damon_get_page.patch
mm-damon-vaddr-convert-hugetlb-related-functions-to-use-a-folio.patch
mm-madvise-use-vm_normal_folio-in-madvise_free_pte_range.patch
mm-huge_memory-make-__do_huge_pmd_anonymous_page-to-take-a-folio.patch
mm-memory-convert-do_anonymous_page-to-use-a-folio.patch
mm-memory-convert-do_cow_fault-to-use-folios.patch
mm-memory-convert-page_copy_prealloc-to-use-a-folio.patch
mm-memory-convert-wp_page_copy-to-use-folios.patch
mm-memory-use-folio_throttle_swaprate-in-do_swap_page.patch
mm-swap-remove-unneeded-cgroup_throttle_swaprate.patch