diff options
Diffstat (limited to 'mm/memremap.c')
| -rw-r--r-- | mm/memremap.c | 20 |
1 files changed, 9 insertions, 11 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 */ |