diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memremap.c | 20 | ||||
| -rw-r--r-- | mm/swap.c | 10 |
2 files changed, 10 insertions, 20 deletions
diff --git a/mm/memremap.c b/mm/memremap.c index 55d23e9f5c04..f41233a67edb 100644 --- a/mm/memremap.c +++ b/mm/memremap.c @@ -502,24 +502,22 @@ void free_devmap_managed_page(struct page *page) page->pgmap->ops->page_free(page); } -void put_devmap_managed_page(struct page *page) +bool __put_devmap_managed_page(struct page *page) { - int count; - - if (WARN_ON_ONCE(!page_is_devmap_managed(page))) - return; - - count = page_ref_dec_return(page); - /* * devmap page refcounts are 1-based, rather than 0-based: if * refcount is 1, then the page is free and the refcount is * stable because nobody holds a reference on the page. */ - if (count == 1) + switch (page_ref_dec_return(page)) { + case 1: free_devmap_managed_page(page); - else if (!count) + break; + case 0: __put_page(page); + break; + } + return true; } -EXPORT_SYMBOL(put_devmap_managed_page); +EXPORT_SYMBOL(__put_devmap_managed_page); #endif /* CONFIG_DEV_PAGEMAP_OPS */ diff --git a/mm/swap.c b/mm/swap.c index e499df864ef7..db8d0eea13d7 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -930,16 +930,8 @@ void release_pages(struct page **pages, int nr) unlock_page_lruvec_irqrestore(lruvec, flags); lruvec = NULL; } - /* - * ZONE_DEVICE pages that return 'false' from - * page_is_devmap_managed() do not require special - * processing, and instead, expect a call to - * put_page_testzero(). - */ - if (page_is_devmap_managed(page)) { - put_devmap_managed_page(page); + if (put_devmap_managed_page(page)) continue; - } if (put_page_testzero(page)) put_dev_pagemap(page->pgmap); continue; |