linux-kernel - [PATCH v3 7/7] docs/core-api: mm-api: add section about GFP flags

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

Message-Id: <1532626360-16650-8-git-send-email-rppt@linux.vnet.ibm.com>
Date:   Thu, 26 Jul 2018 20:32:40 +0300
From:   Mike Rapoport <rppt@...ux.vnet.ibm.com>
To:     Jonathan Corbet <corbet@....net>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...nel.org>, linux-doc@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>
Subject: [PATCH v3 7/7] docs/core-api: mm-api: add section about GFP flags

Signed-off-by: Mike Rapoport <rppt@...ux.vnet.ibm.com>
---
 Documentation/core-api/mm-api.rst | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Documentation/core-api/mm-api.rst b/Documentation/core-api/mm-api.rst
index b5913aa..46ae353 100644
--- a/Documentation/core-api/mm-api.rst
+++ b/Documentation/core-api/mm-api.rst
@@ -14,6 +14,27 @@ User Space Memory Access
 .. kernel-doc:: mm/util.c
    :functions: get_user_pages_fast
 
+Memory Allocation Controls
+==========================
+
+Functions which need to allocate memory often use GFP flags to express
+how that memory should be allocated. The GFP acronym stands for "get
+free pages", the underlying memory allocation function. Not every GFP
+flag is allowed to every function which may allocate memory. Most
+users will want to use a plain ``GFP_KERNEL``.
+
+.. kernel-doc:: include/linux/gfp.h
+   :doc: Page mobility and placement hints
+
+.. kernel-doc:: include/linux/gfp.h
+   :doc: Watermark modifiers
+
+.. kernel-doc:: include/linux/gfp.h
+   :doc: Reclaim modifiers
+
+.. kernel-doc:: include/linux/gfp.h
+   :doc: Common combinations
+
 The Slab Cache
 ==============
 
-- 
2.7.4