linux-kernel - [PATCH] mm: Remove a sentence from kmap_local

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Date:   Wed,  4 Jan 2023 13:18:45 +0100
From:   "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Ira Weiny <ira.weiny@...el.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Alexander Potapenko <glider@...gle.com>,
        Bagas Sanjaya <bagasdotme@...il.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Tony Luck <tony.luck@...el.com>, linux-kernel@...r.kernel.org,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>, linux-mm@...ck.org
Cc:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Subject: [PATCH] mm: Remove a sentence from kmap_local_folio() kdocs

In the kdocs of kmap_local_folio() there is a an ambiguous sentence
which suggests to use this API "only when really necessary".

On the contrary, since kmap() and kmap_atomic() are deprecated, both
kmap_local_folio(), as well as kmap_local_page(), must be preferred
to the previous ones.

Therefore, remove the above-mentioned sentence.

Cc: Ira Weiny <ira.weiny@...el.com>
Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
---
 include/linux/highmem.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 44242268f53b..7b0085a61e67 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -120,8 +120,7 @@ static inline void *kmap_local_page(struct page *page);
  * temporarily mapped.
  *
  * While it is significantly faster than kmap() for the higmem case it
- * comes with restrictions about the pointer validity. Only use when really
- * necessary.
+ * comes with restrictions about the pointer validity.
  *
  * On HIGHMEM enabled systems mapping a highmem page has the side effect of
  * disabling migration in order to keep the virtual address stable across
-- 
2.39.0