linux-kernel - [PATCH 15/22] mm: document maple tree pointer at unmap

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Message-Id: <d2690118414c5458c448348cc94f831d8e8444ce.1656409369.git.mchehab@kernel.org>
Date:   Tue, 28 Jun 2022 10:46:19 +0100
From:   Mauro Carvalho Chehab <mchehab@...nel.org>
To:     Linux Doc Mailing List <linux-doc@...r.kernel.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        "Jonathan Corbet" <corbet@....net>,
        "Liam R. Howlett" <Liam.Howlett@...cle.com>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        "Mauro Carvalho Chehab" <mchehab+huawei@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH 15/22] mm: document maple tree pointer at unmap_vmas() at memory.c

A maple tree pointer parameter was added at unmap_vmas() without
description:

	mm/memory.c:1729: warning: Function parameter or member 'mt' not described in 'unmap_vmas'

Document it it.

Fixes: 5966e5c968b2 ("mm: remove the vma linked list")
Fixes: f8acc5e9581e ("Maple Tree: add new data structure")
Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH 00/22] at: https://lore.kernel.org/all/cover.1656409369.git.mchehab@kernel.org/

 mm/memory.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/memory.c b/mm/memory.c
index e3d3596068f2..771b61444507 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1707,6 +1707,8 @@ static void unmap_single_vma(struct mmu_gather *tlb,
 /**
  * unmap_vmas - unmap a range of memory covered by a list of vma's
  * @tlb: address of the caller's struct mmu_gather
+ * @mt: maple tree pointer. A maple tree is a RCU-safe range based B-tree
+ *	designed to use modern processor cache efficiently
  * @vma: the starting vma
  * @start_addr: virtual address at which to start unmapping
  * @end_addr: virtual address at which to end unmapping
-- 
2.36.1