From: Matthew Wilcox <willy@infradead.org>
To: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
maple-tree@lists.infradead.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, pedro.falcato@gmail.com,
stable <stable@kernel.org>
Subject: Re: [PATCH 2/2] maple_tree: Add MAS_UNDERFLOW and MAS_OVERFLOW states
Date: Thu, 21 Sep 2023 19:40:29 +0100 [thread overview]
Message-ID: <ZQyOHcQFhHqO7JAY@casper.infradead.org> (raw)
In-Reply-To: <20230921181236.509072-3-Liam.Howlett@oracle.com>
On Thu, Sep 21, 2023 at 02:12:36PM -0400, Liam R. Howlett wrote:
> Since MAS_NONE is used for handling of the maple tree when it's a single
> entry at 0 (just a pointer), changing the handling of MAS_NONE in
> mas_find() would make the code more complicated and error prone.
Single entry at index 0 is MAS_ROOT, not MAS_NONE.
next prev parent reply other threads:[~2023-09-21 18:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-21 18:12 [PATCH 0/2] maple_tree: Fix mas_prev() state regression Liam R. Howlett
2023-09-21 18:12 ` [PATCH 1/2] maple_tree: Add mas_active() to detect in-tree walks Liam R. Howlett
2023-09-21 18:12 ` [PATCH 2/2] maple_tree: Add MAS_UNDERFLOW and MAS_OVERFLOW states Liam R. Howlett
2023-09-21 18:40 ` Matthew Wilcox [this message]
2023-09-21 18:47 ` Liam R. Howlett
2023-09-21 18:25 ` [PATCH 0/2] maple_tree: Fix mas_prev() state regression Andrew Morton
2023-09-21 18:53 ` Liam R. Howlett
2023-09-21 19:23 ` Matthew Wilcox
2023-09-21 23:27 ` Andrew Morton
2023-09-21 23:34 ` Liam R. Howlett
2023-09-21 23:41 ` Pedro Falcato
2023-09-21 23:51 ` Liam R. Howlett
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