diff options
author | Matthew Wilcox (Oracle) | 2022-06-17 18:50:06 +0100 |
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committer | akpm | 2022-07-03 18:08:46 -0700 |
commit | 3a44610b126399021095b4495941926a7dd756c4 (patch) | |
tree | f85cb140c797aacbf3de900292154102a818a0d2 | |
parent | cec394bafab5d921d21e273b0db94a4802d9a991 (diff) |
mm/swap: convert activate_page to a folio_batch
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@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-rw-r--r-- | mm/swap.c | 81 |
1 files changed, 16 insertions, 65 deletions
diff --git a/mm/swap.c b/mm/swap.c index 4a2f866c8878..3f402d351ad5 100644 --- a/mm/swap.c +++ b/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 *kiov, int nr_segs, int write, } 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 *folio) 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 folio *folio, struct lruvec *lruvec) } #ifdef CONFIG_SMP -static void __activate_page(struct page *page, struct lruvec *lruvec) +static void folio_activate_drain(int cpu) { - return __folio_activate(page_folio(page), lruvec); -} + struct folio_batch *fbatch = &per_cpu(lru_pvecs.activate, cpu); -static void activate_page_drain(int cpu) -{ - struct pagevec *pvec = &per_cpu(lru_pvecs.activate_page, cpu); - - if (pagevec_count(pvec)) - pagevec_lru_move_fn(pvec, __activate_page); -} - -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 *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 *folio) */ } 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(bool force_all_cpus) 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); |