From: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
To: "Liam.Howlett@oracle.com" <Liam.Howlett@oracle.com>,
"zhangpeng.00@bytedance.com" <zhangpeng.00@bytedance.com>
Cc: "maple-tree@lists.infradead.org" <maple-tree@lists.infradead.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"Stable@vger.kernel.org" <Stable@vger.kernel.org>,
"support@spotco.us" <support@spotco.us>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"mgkeyes@vigovproductions.net" <mgkeyes@vigovproductions.net>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>
Subject: Re: [PATCH v2] maple_tree: Make maple state reusable after mas_empty_area()
Date: Fri, 5 May 2023 17:36:55 +0000 [thread overview]
Message-ID: <0f397dcef25fc57cf7e3ddf705992f5733f27365.camel@intel.com> (raw)
In-Reply-To: <20230505145829.74574-1-zhangpeng.00@bytedance.com>
On Fri, 2023-05-05 at 22:58 +0800, Peng Zhang wrote:
> Make mas->min and mas->max point to a node range instead of a leaf
> entry
> range. This allows mas to still be usable after mas_empty_area()
> returns.
> Users would get unexpected results from other operations on the maple
> state after calling the affected function.
>
> Reported-by: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
> Reported-by: Tad <support@spotco.us>
> Reported-by: Michael Keyes <mgkeyes@vigovproductions.net>
> Link:
> https://lore.kernel.org/linux-mm/32f156ba80010fd97dbaf0a0cdfc84366608624d.camel@intel.com/
> Link:
> https://lore.kernel.org/linux-mm/e6108286ac025c268964a7ead3aab9899f9bc6e9.camel@spotco.us/
> Fixes: 54a611b60590 ("Maple Tree: add new data structure")
> Cc: <Stable@vger.kernel.org>
> Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com>
> ---
Yep, this also works for me. Thanks.
prev parent reply other threads:[~2023-05-05 17:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-05 14:58 Peng Zhang
2023-05-05 16:00 ` Liam R. Howlett
2023-05-05 17:36 ` Edgecombe, Rick P [this message]
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