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Howlett" Subject: [PATCH] maple_tree: not necessary to filter MAPLE_PARENT_ROOT since it is not a root Date: Sun, 13 Nov 2022 00:56:18 +0000 Message-Id: <20221113005618.29679-1-richard.weiyang@gmail.com> X-Mailer: git-send-email 2.11.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749341209368550991?= X-GMAIL-MSGID: =?utf-8?q?1749341209368550991?= Root node is return at the beginning, so we are sure bit 0 is not set. Signed-off-by: Wei Yang CC: Liam R. Howlett --- 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 9aad98c24f3e..f8c4755e7c75 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -436,7 +436,7 @@ enum maple_type mte_parent_enum(struct maple_enode *p_enode, return 0; /* Validated in the caller. */ p_type &= MAPLE_NODE_MASK; - p_type = p_type & ~(MAPLE_PARENT_ROOT | mte_parent_slot_mask(p_type)); + p_type = p_type & ~mte_parent_slot_mask(p_type); switch (p_type) { case MAPLE_PARENT_RANGE64: /* or MAPLE_PARENT_ARANGE64 */