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From: Wei-Lin Chang <weilin.chang@arm.com>
To: maple-tree@lists.infradead.org, linux-mm@kvack.org,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: "Liam R . Howlett" <Liam.Howlett@oracle.com>,
	Alice Ryhl <aliceryhl@google.com>,
	Andrew Ballance <andrewjballance@gmail.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Shuah Khan <skhan@linuxfoundation.org>,
	Wei-Lin Chang <weilin.chang@arm.com>
Subject: [RFC PATCH 0/2] Documentation: maple_tree: Improve statements on reserved values
Date: Sat, 18 Apr 2026 21:47:52 +0100	[thread overview]
Message-ID: <20260418204754.120405-1-weilin.chang@arm.com> (raw)

Hi,

While using the maple tree and reading its documentation, I found a few
bits confusing, mainly about the reserved values. So here are some
changes hoping to make things clearer.

I am not familiar with the implementation, so I might be getting things
wrong, hence this being RFC.

While looking at the code I also found that although the doc claims the
normal API blocks reserved value stores, the code checks this using
xa_is_advanced(), which only blocks values up to 1026, not up to the max
maple tree reserved value 4094. For this part I am not sure whether the
code needs to be changed or we can also improve the doc.

Any feedback is appreciated, thanks!

Wei-Lin Chang (2):
  Documentation: maple_tree: Point out constraint when using xa_{mk,
    to}_value
  Documentation: maple_tree: Clarify behavior when using reserved values

 Documentation/core-api/maple_tree.rst | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

-- 
2.43.0



             reply	other threads:[~2026-04-18 20:49 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-18 20:47 Wei-Lin Chang [this message]
2026-04-18 20:47 ` [RFC PATCH 1/2] Documentation: maple_tree: Point out constraint when using xa_{mk, to}_value Wei-Lin Chang
2026-04-18 20:47 ` [RFC PATCH 2/2] Documentation: maple_tree: Clarify behavior when using reserved values Wei-Lin Chang

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