The patch titled
Subject: mm/swap: convert activate_page to a folio_batch
has been added to the -mm mm-unstable branch. Its filename is
mm-swap-convert-activate_page-to-a-folio_batch.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-swap-convert-activate_page-to-a-folio_batch.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: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm/swap: convert activate_page to a folio_batch
Date: Fri, 17 Jun 2022 18:50:06 +0100
Rename it to just 'activate', saving 696 bytes of text from removals
of compound_page() and the pagevec_lru_move_fn() infrastructure.
Inline need_activate_page_drain() into its only caller.
Link: https://lkml.kernel.org/r/20220617175020.717127-9-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/swap.c | 81 ++++++++++------------------------------------------
1 file changed, 16 insertions(+), 65 deletions(-)
--- a/mm/swap.c~mm-swap-convert-activate_page-to-a-folio_batch
+++ a/mm/swap.c
@@ -66,7 +66,7 @@ struct lru_pvecs {
struct folio_batch lru_deactivate;
struct folio_batch lru_lazyfree;
#ifdef CONFIG_SMP
- struct pagevec activate_page;
+ struct folio_batch activate;
#endif
};
static DEFINE_PER_CPU(struct lru_pvecs, lru_pvecs) = {
@@ -188,44 +188,6 @@ int get_kernel_pages(const struct kvec *
}
EXPORT_SYMBOL_GPL(get_kernel_pages);
-static void pagevec_lru_move_fn(struct pagevec *pvec,
- void (*move_fn)(struct page *page, struct lruvec *lruvec))
-{
- int i;
- struct lruvec *lruvec = NULL;
- unsigned long flags = 0;
-
- for (i = 0; i < pagevec_count(pvec); i++) {
- struct page *page = pvec->pages[i];
- struct folio *folio = page_folio(page);
-
- /* block memcg migration during page moving between lru */
- if (!TestClearPageLRU(page))
- continue;
-
- lruvec = folio_lruvec_relock_irqsave(folio, lruvec, &flags);
- (*move_fn)(page, lruvec);
-
- SetPageLRU(page);
- }
- if (lruvec)
- unlock_page_lruvec_irqrestore(lruvec, flags);
- release_pages(pvec->pages, pvec->nr);
- pagevec_reinit(pvec);
-}
-
-/* return true if pagevec needs to drain */
-static bool pagevec_add_and_need_flush(struct pagevec *pvec, struct page *page)
-{
- bool ret = false;
-
- if (!pagevec_add(pvec, page) || PageCompound(page) ||
- lru_cache_disabled())
- ret = true;
-
- return ret;
-}
-
typedef void (*move_fn_t)(struct lruvec *lruvec, struct folio *folio);
static void lru_add_fn(struct lruvec *lruvec, struct folio *folio)
@@ -380,7 +342,7 @@ void lru_note_cost_folio(struct folio *f
folio_nr_pages(folio));
}
-static void __folio_activate(struct folio *folio, struct lruvec *lruvec)
+static void folio_activate_fn(struct lruvec *lruvec, struct folio *folio)
{
if (!folio_test_active(folio) && !folio_test_unevictable(folio)) {
long nr_pages = folio_nr_pages(folio);
@@ -397,41 +359,30 @@ static void __folio_activate(struct foli
}
#ifdef CONFIG_SMP
-static void __activate_page(struct page *page, struct lruvec *lruvec)
-{
- return __folio_activate(page_folio(page), lruvec);
-}
-
-static void activate_page_drain(int cpu)
+static void folio_activate_drain(int cpu)
{
- struct pagevec *pvec = &per_cpu(lru_pvecs.activate_page, cpu);
-
- if (pagevec_count(pvec))
- pagevec_lru_move_fn(pvec, __activate_page);
-}
+ struct folio_batch *fbatch = &per_cpu(lru_pvecs.activate, cpu);
-static bool need_activate_page_drain(int cpu)
-{
- return pagevec_count(&per_cpu(lru_pvecs.activate_page, cpu)) != 0;
+ if (folio_batch_count(fbatch))
+ folio_batch_move_lru(fbatch, folio_activate_fn);
}
static void folio_activate(struct folio *folio)
{
if (folio_test_lru(folio) && !folio_test_active(folio) &&
!folio_test_unevictable(folio)) {
- struct pagevec *pvec;
+ struct folio_batch *fbatch;
folio_get(folio);
local_lock(&lru_pvecs.lock);
- pvec = this_cpu_ptr(&lru_pvecs.activate_page);
- if (pagevec_add_and_need_flush(pvec, &folio->page))
- pagevec_lru_move_fn(pvec, __activate_page);
+ fbatch = this_cpu_ptr(&lru_pvecs.activate);
+ folio_batch_add_and_move(fbatch, folio, folio_activate_fn);
local_unlock(&lru_pvecs.lock);
}
}
#else
-static inline void activate_page_drain(int cpu)
+static inline void folio_activate_drain(int cpu)
{
}
@@ -441,7 +392,7 @@ static void folio_activate(struct folio
if (folio_test_clear_lru(folio)) {
lruvec = folio_lruvec_lock_irq(folio);
- __folio_activate(folio, lruvec);
+ folio_activate_fn(lruvec, folio);
unlock_page_lruvec_irq(lruvec);
folio_set_lru(folio);
}
@@ -500,9 +451,9 @@ void folio_mark_accessed(struct folio *f
*/
} else if (!folio_test_active(folio)) {
/*
- * If the page is on the LRU, queue it for activation via
- * lru_pvecs.activate_page. Otherwise, assume the page is on a
- * pagevec, mark it active and it'll be moved to the active
+ * If the folio is on the LRU, queue it for activation via
+ * lru_pvecs.activate. Otherwise, assume the folio is in a
+ * folio_batch, mark it active and it'll be moved to the active
* LRU on the next drain.
*/
if (folio_test_lru(folio))
@@ -697,7 +648,7 @@ void lru_add_drain_cpu(int cpu)
if (folio_batch_count(fbatch))
folio_batch_move_lru(fbatch, lru_lazyfree_fn);
- activate_page_drain(cpu);
+ folio_activate_drain(cpu);
}
/**
@@ -901,7 +852,7 @@ static inline void __lru_add_drain_all(b
folio_batch_count(&per_cpu(lru_pvecs.lru_deactivate_file, cpu)) ||
folio_batch_count(&per_cpu(lru_pvecs.lru_deactivate, cpu)) ||
folio_batch_count(&per_cpu(lru_pvecs.lru_lazyfree, cpu)) ||
- need_activate_page_drain(cpu) ||
+ folio_batch_count(&per_cpu(lru_pvecs.activate, cpu)) ||
need_mlock_page_drain(cpu) ||
has_bh_in_lru(cpu, NULL)) {
INIT_WORK(work, lru_add_drain_per_cpu);
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-add-vma-iterator.patch
mmap-use-the-vma-iterator-in-count_vma_pages_range.patch
proc-remove-vma-rbtree-use-from-nommu.patch
arm64-remove-mmap-linked-list-from-vdso.patch
parisc-remove-mmap-linked-list-from-cache-handling.patch
powerpc-remove-mmap-linked-list-walks.patch
s390-remove-vma-linked-list-walks.patch
x86-remove-vma-linked-list-walks.patch
xtensa-remove-vma-linked-list-walks.patch
cxl-remove-vma-linked-list-walk.patch
optee-remove-vma-linked-list-walk.patch
um-remove-vma-linked-list-walk.patch
coredump-remove-vma-linked-list-walk.patch
exec-use-vma-iterator-instead-of-linked-list.patch
fs-proc-task_mmu-stop-using-linked-list-and-highest_vm_end.patch
acct-use-vma-iterator-instead-of-linked-list.patch
perf-use-vma-iterator.patch
sched-use-maple-tree-iterator-to-walk-vmas.patch
fork-use-vma-iterator.patch
mm-khugepaged-stop-using-vma-linked-list.patch
mm-ksm-use-vma-iterators-instead-of-vma-linked-list.patch
mm-mlock-use-vma-iterator-and-maple-state-instead-of-vma-linked-list.patch
mm-pagewalk-use-vma_find-instead-of-vma-linked-list.patch
i915-use-the-vma-iterator.patch
nommu-remove-uses-of-vma-linked-list.patch
mm-vmscan-convert-reclaim_clean_pages_from_list-to-folios.patch
mm-vmscan-convert-isolate_lru_pages-to-use-a-folio.patch
mm-vmscan-convert-move_pages_to_lru-to-use-a-folio.patch
mm-vmscan-convert-shrink_active_list-to-use-a-folio.patch
mm-vmscan-convert-reclaim_pages-to-use-a-folio.patch
mm-add-folios_put.patch
mm-swap-add-folio_batch_move_lru.patch
mm-swap-make-__pagevec_lru_add-static.patch
mm-swap-convert-lru_add-to-a-folio_batch.patch
mm-swap-convert-lru_deactivate_file-to-a-folio_batch.patch
mm-swap-convert-lru_deactivate-to-a-folio_batch.patch
mm-swap-convert-lru_lazyfree-to-a-folio_batch.patch
mm-swap-convert-activate_page-to-a-folio_batch.patch
mm-swap-rename-lru_pvecs-to-cpu_fbatches.patch
mm-swap-pull-the-cpu-conditional-out-of-__lru_add_drain_all.patch
mm-swap-optimise-lru_add_drain_cpu.patch
mm-swap-convert-try_to_free_swap-to-use-a-folio.patch
mm-swap-convert-release_pages-to-use-a-folio-internally.patch
mm-swap-convert-put_pages_list-to-use-folios.patch
mm-swap-convert-__put_page-to-__folio_put.patch
mm-swap-convert-__put_single_page-to-__folio_put_small.patch
mm-swap-convert-__put_compound_page-to-__folio_put_large.patch
mm-swap-convert-__page_cache_release-to-use-a-folio.patch
mm-convert-destroy_compound_page-to-destroy_large_folio.patch
mm-convert-page_swap_flags-to-folio_swap_flags.patch
mm-swap-convert-delete_from_swap_cache-to-take-a-folio.patch
mm-swap-convert-__delete_from_swap_cache-to-a-folio.patch
