linux-kernel - Re: [PATCH -next] mm/rmap: Fix argument list that the kdoc format and script verified.

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Date:   Thu, 24 Feb 2022 22:11:03 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Yang Li <yang.lee@...ux.alibaba.com>
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Abaci Robot <abaci@...ux.alibaba.com>
Subject: Re: [PATCH -next] mm/rmap: Fix argument list that the kdoc format
 and script verified.

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).
  */