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Thu, 27 Apr 2023 19:45:40 -0700 (PDT) Message-ID: Date: Fri, 28 Apr 2023 10:45:35 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.10.1 Subject: Re: [PATCH 21/34] maple_tree: mas_start() reset depth on dead node To: "Liam R. Howlett" Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, maple-tree@lists.infradead.org, Andrew Morton References: <20230425140955.3834476-1-Liam.Howlett@oracle.com> <20230425140955.3834476-22-Liam.Howlett@oracle.com> From: Peng Zhang In-Reply-To: <20230425140955.3834476-22-Liam.Howlett@oracle.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 6FFBE40009 X-Stat-Signature: ab8nqdceuzgrwjfpoz7whrxukxdkuz31 X-Rspam-User: X-HE-Tag: 1682649942-827440 X-HE-Meta: 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 NAfDkFUC 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000010, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 在 2023/4/25 22:09, Liam R. Howlett 写道: > When a dead node is detected, the depth has already been set to 1 so > reset it to 0. > > Signed-off-by: Liam R. Howlett Reviewed-by: Peng Zhang > --- > lib/maple_tree.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/lib/maple_tree.c b/lib/maple_tree.c > index 35c6e12ca9482..1542274dc2b7f 100644 > --- a/lib/maple_tree.c > +++ b/lib/maple_tree.c > @@ -1397,9 +1397,9 @@ static inline struct maple_enode *mas_start(struct ma_state *mas) > > mas->min = 0; > mas->max = ULONG_MAX; > - mas->depth = 0; > > retry: > + mas->depth = 0; > root = mas_root(mas); > /* Tree with nodes */ > if (likely(xa_is_node(root))) {