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| author |   Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-01-21 11:27:31 -0500 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-03-21 12:59:03 -0400 |
| commit | b3ac04132c4b9bc5c9c14608424d410e7ca3b400 (patch) | |
| tree | 8cb5d7604e0a6c332fa49291a9fcbc04823b4564 /mm/vmscan.c | |
| parent | mm/mlock: Add mlock_vma_folio() (diff) | |
| download | linux-dev-b3ac04132c4b9bc5c9c14608424d410e7ca3b400.tar.xz linux-dev-b3ac04132c4b9bc5c9c14608424d410e7ca3b400.zip | |
mm/rmap: Turn page_referenced() into folio_referenced()
Both its callers pass a page which was previously on an LRU list,
so were passing a folio by definition. Use the type system to enforce
that and remove a few calls to compound_head().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 94729d2d1125..38f124c41bcd 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1386,11 +1386,12 @@ enum page_references { static enum page_references page_check_references(struct page *page, struct scan_control *sc) { + struct folio *folio = page_folio(page); int referenced_ptes, referenced_page; unsigned long vm_flags; - referenced_ptes = page_referenced(page, 1, sc->target_mem_cgroup, - &vm_flags); + referenced_ptes = folio_referenced(folio, 1, sc->target_mem_cgroup, + &vm_flags); referenced_page = TestClearPageReferenced(page); /* @@ -2490,7 +2491,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec, * * If the pages are mostly unmapped, the processing is fast and it is * appropriate to hold lru_lock across the whole operation. But if - * the pages are mapped, the processing is slow (page_referenced()), so + * the pages are mapped, the processing is slow (folio_referenced()), so * we should drop lru_lock around each page. It's impossible to balance * this, so instead we remove the pages from the LRU while processing them. * It is safe to rely on PG_active against the non-LRU pages in here because @@ -2510,7 +2511,6 @@ static void shrink_active_list(unsigned long nr_to_scan, LIST_HEAD(l_hold); /* The pages which were snipped off */ LIST_HEAD(l_active); LIST_HEAD(l_inactive); - struct page *page; unsigned nr_deactivate, nr_activate; unsigned nr_rotated = 0; int file = is_file_lru(lru); @@ -2532,9 +2532,13 @@ static void shrink_active_list(unsigned long nr_to_scan, spin_unlock_irq(&lruvec->lru_lock); while (!list_empty(&l_hold)) { + struct folio *folio; + struct page *page; + cond_resched(); - page = lru_to_page(&l_hold); - list_del(&page->lru); + folio = lru_to_folio(&l_hold); + list_del(&folio->lru); + page = &folio->page; if (unlikely(!page_evictable(page))) { putback_lru_page(page); @@ -2549,8 +2553,8 @@ static void shrink_active_list(unsigned long nr_to_scan, } } - if (page_referenced(page, 0, sc->target_mem_cgroup, - &vm_flags)) { + if (folio_referenced(folio, 0, sc->target_mem_cgroup, + &vm_flags)) { /* * Identify referenced, file-backed active pages and * give them one more trip around the active list. So |