linux-kernel - [PATCH v4 06/10] maple_tree: Update the documentation of maple tree

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Message-Id: <20231009090320.64565-7-zhangpeng.00@bytedance.com>
Date:   Mon,  9 Oct 2023 17:03:16 +0800
From:   Peng Zhang <zhangpeng.00@...edance.com>
To:     Liam.Howlett@...cle.com, corbet@....net, akpm@...ux-foundation.org,
        willy@...radead.org, brauner@...nel.org, surenb@...gle.com,
        michael.christie@...cle.com, mjguzik@...il.com,
        mathieu.desnoyers@...icios.com, npiggin@...il.com,
        peterz@...radead.org, oliver.sang@...el.com, mst@...hat.com
Cc:     zhangpeng.00@...edance.com, maple-tree@...ts.infradead.org,
        linux-mm@...ck.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH v4 06/10] maple_tree: Update the documentation of maple tree

Introduce the new interface mtree_dup() in the documentation.

Signed-off-by: Peng Zhang <zhangpeng.00@...edance.com>
---
 Documentation/core-api/maple_tree.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/core-api/maple_tree.rst b/Documentation/core-api/maple_tree.rst
index 45defcf15da7..285e2d2b21ae 100644
--- a/Documentation/core-api/maple_tree.rst
+++ b/Documentation/core-api/maple_tree.rst
@@ -81,6 +81,9 @@ section.
 Sometimes it is necessary to ensure the next call to store to a maple tree does
 not allocate memory, please see :ref:`maple-tree-advanced-api` for this use case.
 
+You can use mtree_dup() to duplicate an entire maple tree. It is a more
+efficient way than inserting all elements one by one into a new tree.
+
 Finally, you can remove all entries from a maple tree by calling
 mtree_destroy().  If the maple tree entries are pointers, you may wish to free
 the entries first.
@@ -112,6 +115,7 @@ Takes ma_lock internally:
  * mtree_insert()
  * mtree_insert_range()
  * mtree_erase()
+ * mtree_dup()
  * mtree_destroy()
  * mt_set_in_rcu()
  * mt_clear_in_rcu()
-- 
2.20.1