diff options
Diffstat (limited to 'include/linux/mm.h')
-rw-r--r-- | include/linux/mm.h | 34 |
1 files changed, 10 insertions, 24 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index a9d6473fc045..8a59f0456149 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1094,33 +1094,24 @@ static inline bool is_zone_movable_page(const struct page *page) #ifdef CONFIG_DEV_PAGEMAP_OPS DECLARE_STATIC_KEY_FALSE(devmap_managed_key); -static inline bool page_is_devmap_managed(struct page *page) +bool __put_devmap_managed_page(struct page *page); +static inline bool put_devmap_managed_page(struct page *page) { if (!static_branch_unlikely(&devmap_managed_key)) return false; if (!is_zone_device_page(page)) return false; - switch (page->pgmap->type) { - case MEMORY_DEVICE_PRIVATE: - case MEMORY_DEVICE_FS_DAX: - return true; - default: - break; - } - return false; + if (page->pgmap->type != MEMORY_DEVICE_PRIVATE && + page->pgmap->type != MEMORY_DEVICE_FS_DAX) + return false; + return __put_devmap_managed_page(page); } -void put_devmap_managed_page(struct page *page); - #else /* CONFIG_DEV_PAGEMAP_OPS */ -static inline bool page_is_devmap_managed(struct page *page) +static inline bool put_devmap_managed_page(struct page *page) { return false; } - -static inline void put_devmap_managed_page(struct page *page) -{ -} #endif /* CONFIG_DEV_PAGEMAP_OPS */ static inline bool is_device_private_page(const struct page *page) @@ -1220,16 +1211,11 @@ static inline void put_page(struct page *page) struct folio *folio = page_folio(page); /* - * For devmap managed pages we need to catch refcount transition from - * 2 to 1, when refcount reach one it means the page is free and we - * need to inform the device driver through callback. See - * include/linux/memremap.h and HMM for details. + * For some devmap managed pages we need to catch refcount transition + * from 2 to 1: */ - if (page_is_devmap_managed(&folio->page)) { - put_devmap_managed_page(&folio->page); + if (put_devmap_managed_page(&folio->page)) return; - } - folio_put(folio); } |