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mm: convert lru_add_page_tail() to lru_add_split_folio()

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Remove three hidden calls to compound_head() and accesses to page->lru.

Link: https://lkml.kernel.org/r/20250313151458.4145978-1-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2025-03-13 15:14:56 +00:00 committed by Andrew Morton
parent f841ad9ca5
commit 8defffa4c7
1 changed files with 9 additions and 9 deletions
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18
mm/huge_memory.c
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@ -3262,25 +3262,25 @@ static void remap_page(struct folio *folio, unsigned long nr, int flags)
}
}
static void lru_add_page_tail(struct folio *folio, struct page *tail,
static void lru_add_split_folio(struct folio *folio, struct folio *new_folio,
struct lruvec *lruvec, struct list_head *list)
{
VM_BUG_ON_FOLIO(PageLRU(tail), folio);
VM_BUG_ON_FOLIO(folio_test_lru(new_folio), folio);
lockdep_assert_held(&lruvec->lru_lock);
if (list) {
/* page reclaim is reclaiming a huge page */
VM_WARN_ON(folio_test_lru(folio));
get_page(tail);
list_add_tail(&tail->lru, list);
folio_get(new_folio);
list_add_tail(&new_folio->lru, list);
} else {
/* head is still on lru (and we have it frozen) */
VM_WARN_ON(!folio_test_lru(folio));
if (folio_test_unevictable(folio))
tail->mlock_count = 0;
new_folio->mlock_count = 0;
else
list_add_tail(&tail->lru, &folio->lru);
SetPageLRU(tail);
list_add_tail(&new_folio->lru, &folio->lru);
folio_set_lru(new_folio);
}
}
@ -3581,8 +3581,8 @@ static int __split_unmapped_folio(struct folio *folio, int new_order,
((mapping || swap_cache) ?
folio_nr_pages(release) : 0));
lru_add_page_tail(origin_folio, &release->page,
lruvec, list);
lru_add_split_folio(origin_folio, release, lruvec,
list);
/* Some pages can be beyond EOF: drop them from cache */
if (release->index >= end) {