linux-kernel - [PATCH v2] mm: Remove an ambiguous sentence from kmap_local

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230105120424.30055-1-fmdefrancesco@gmail.com>
Date:   Thu,  5 Jan 2023 13:04:24 +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 v2] mm: Remove an ambiguous 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 exactly how it has
previously been done for the kmap_local_page() kdocs in
commit 72f1c55adf70 ("highmem: delete a sentence from kmap_local_page() kdocs").

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