On Thu, Feb 24, 2022 at 09:43:44AM +0800, Yang Li wrote: > mm/rmap.c:2086: warning: Function parameter or member 'folio' not > described in 'folio_make_device_exclusive' > mm/rmap.c:2086: warning: expecting prototype for > page_make_device_exclusive(). Prototype was for > folio_make_device_exclusive() instead /** - * page_make_device_exclusive - mark the page exclusively owned by a device - * @page: the page to replace page table entries for - * @mm: the mm_struct where the page is expected to be mapped - * @address: address where the page is expected to be mapped + * folio_make_device_exclusive - Mark the folio exclusively owned by a device. + * @folio: The folio to replace page table entries for. + * @mm: The mm_struct where the folio is expected to be mapped. + * @address: Address where the folio is expected to be mapped. * @owner: passed to MMU_NOTIFY_EXCLUSIVE range notifier callbacks * - * Tries to remove all the page table entries which are mapping this page and - * replace them with special device exclusive swap entries to grant a device - * exclusive access to the page. Caller must hold the page lock. + * Tries to remove all the page table entries which are mapping this + * folio and replace them with special device exclusive swap entries to + * grant a device exclusive access to the folio. * - * Returns false if the page is still mapped, or if it could not be unmapped + * Context: Caller must hold the folio lock. + * Return: false if the page is still mapped, or if it could not be unmapped * from the expected address. Otherwise returns true (success). */
