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mm: remove is_longterm_pinnable_page() and reimplement folio_is_longterm_pinnable()

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folio_is_longterm_pinnable() already exists as a wrapper function.  Now
that the whole implementation of is_longterm_pinnable_page() can be
implemented using folios, folio_is_longterm_pinnable() can be made its own
standalone function - and we can remove is_longterm_pinnable_page().

Link: https://lkml.kernel.org/r/20230614021312.34085-6-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Vishal Moola (Oracle) 2023-06-13 19:13:12 -07:00 committed by Andrew Morton
parent 503670ee6d
commit 5d949953f8
1 changed files with 9 additions and 13 deletions
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22
include/linux/mm.h
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@ -1902,39 +1902,35 @@ static inline bool page_needs_cow_for_dma(struct vm_area_struct *vma,
return page_maybe_dma_pinned(page);
}
/* MIGRATE_CMA and ZONE_MOVABLE do not allow pin pages */
/* MIGRATE_CMA and ZONE_MOVABLE do not allow pin folios */
#ifdef CONFIG_MIGRATION
static inline bool is_longterm_pinnable_page(struct page *page)
static inline bool folio_is_longterm_pinnable(struct folio *folio)
{
#ifdef CONFIG_CMA
int mt = get_pageblock_migratetype(page);
int mt = folio_migratetype(folio);
if (mt == MIGRATE_CMA || mt == MIGRATE_ISOLATE)
return false;
#endif
/* The zero page may always be pinned */
if (is_zero_pfn(page_to_pfn(page)))
if (is_zero_pfn(folio_pfn(folio)))
return true;
/* Coherent device memory must always allow eviction. */
if (is_device_coherent_page(page))
if (folio_is_device_coherent(folio))
return false;
/* Otherwise, non-movable zone pages can be pinned. */
return !is_zone_movable_page(page);
/* Otherwise, non-movable zone folios can be pinned. */
return !folio_is_zone_movable(folio);
}
#else
static inline bool is_longterm_pinnable_page(struct page *page)
static inline bool folio_is_longterm_pinnable(struct folio *folio)
{
return true;
}
#endif
static inline bool folio_is_longterm_pinnable(struct folio *folio)
{
return is_longterm_pinnable_page(&folio->page);
}
static inline void set_page_zone(struct page *page, enum zone_type zone)
{
page->flags &= ~(ZONES_MASK << ZONES_PGSHIFT);