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Tue, 24 Oct 2023 01:34:09 -0700 (PDT) Received: from GL4FX4PXWL.bytedance.net ([203.208.167.147]) by smtp.gmail.com with ESMTPSA id y21-20020aa79af5000000b0068be348e35fsm7236977pfp.166.2023.10.24.01.34.03 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 24 Oct 2023 01:34:09 -0700 (PDT) From: Peng Zhang To: Liam.Howlett@oracle.com, corbet@lwn.net, akpm@linux-foundation.org, willy@infradead.org, brauner@kernel.org, surenb@google.com, michael.christie@oracle.com, mjguzik@gmail.com, mathieu.desnoyers@efficios.com, npiggin@gmail.com, peterz@infradead.org, oliver.sang@intel.com, mst@redhat.com Cc: zhangpeng.00@bytedance.com, maple-tree@lists.infradead.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH v6 09/10] maple_tree: Preserve the tree attributes when destroying maple tree Date: Tue, 24 Oct 2023 16:32:57 +0800 Message-Id: <20231024083258.65750-10-zhangpeng.00@bytedance.com> X-Mailer: git-send-email 2.39.3 (Apple Git-145) In-Reply-To: <20231024083258.65750-1-zhangpeng.00@bytedance.com> References: <20231024083258.65750-1-zhangpeng.00@bytedance.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 861674000E X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: dh9m7gi5ua8r47fomm6y9noh1jq84frz X-HE-Tag: 1698136450-659578 X-HE-Meta: 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 NGEJzTYL jY74C48hEOEJrsL6nPI1wIBYZcrx+WwkePThuq24DCl/BceIVBA4wZ9VyVZgUT/H0MyOOOAJl7AODUEcsEIlcbi7cBfDSHc5iPlTXBPPWByRQ0cuPO1O9GzpwttkLe68nk6YSG9ba2q1Nbg3FOiSJyU3C+fHVOWwvjtK6euQgiWrZPNHDaXfQ/lmLQQz1MsJr3oOMpFBd0vbRQ3ZopKz1/jWehu4p0sE6ca0pYiBbYX/e6zdlp+tyW31T30r5eDu3JghHWDpA7B2zhWKMAXeDVY/clBTQ8NrIfKuwz4uM+MlsuErJ7cqERCfuw6KxeMATNDvl5pWJNx6i504sTs2mBc0guAoDjwPH3jD3hJcrvkTS1SjztQV/nnEHB5jsbH8C3sQ1NvIOv3/AIsaGR/7gDI1H1+YhDfHbui6QUf1keCi79M0Xt4wLsAeckPnfa1tf1OIyNhZ3ajQ58MJ/eKm4BeM/pQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: When destroying maple tree, preserve its attributes and then turn it into an empty tree. This allows it to be reused without needing to be reinitialized. Signed-off-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 6704b5c507b2..b9e238e7a7af 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -6765,7 +6765,7 @@ void __mt_destroy(struct maple_tree *mt) if (xa_is_node(root)) mte_destroy_walk(root, mt); - mt->ma_flags = 0; + mt->ma_flags = mt_attr(mt); } EXPORT_SYMBOL_GPL(__mt_destroy); -- 2.20.1