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imf22.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf22.hostedemail.com: domain of shikemeng@huaweicloud.com designates 45.249.212.51 as permitted sender) smtp.mailfrom=shikemeng@huaweicloud.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1734397176; a=rsa-sha256; cv=none; b=knwRtyZR+JNEG8pvK0FuVoUZd7VngFARHLy9UUNGnDprDF1+85W52oCvaf5IdZeXUXhwPE cfAo/INlRE7cVNObwtq18xQzWtRGjFj0D+RcOb8grbmJBNBqVoQ/Hf63db5qM4FZMJboW+ pvRgvqAstoCWxUyf19ca602mizCQi4M= Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4YBz3t609Vz4f3jjx for ; Tue, 17 Dec 2024 08:59:38 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.75]) by mail.maildlp.com (Postfix) with ESMTP id 453AA1A018C for ; Tue, 17 Dec 2024 08:59:53 +0800 (CST) Received: from [10.174.178.129] (unknown [10.174.178.129]) by APP2 (Coremail) with SMTP id Syh0CgAXd+MHzWBnW3wdEw--.2904S2; Tue, 17 Dec 2024 08:59:53 +0800 (CST) Subject: Re: [PATCH v3 1/5] Xarray: Do not return sibling entries from xas_find_marked() To: Matthew Wilcox Cc: Baolin Wang , akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-nfs@vger.kernel.org References: <20241213122523.12764-1-shikemeng@huaweicloud.com> <20241213122523.12764-2-shikemeng@huaweicloud.com> <1f8b523e-d68f-4382-8b1e-2475eb47ae81@linux.alibaba.com> <5d89f26a-8ac9-9768-5fc7-af155473f396@huaweicloud.com> From: Kemeng Shi Message-ID: <3278a51d-32e0-5c89-a5e5-b6f17af8ebde@huaweicloud.com> Date: Tue, 17 Dec 2024 08:59:51 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=gbk Content-Transfer-Encoding: 7bit X-CM-TRANSID:Syh0CgAXd+MHzWBnW3wdEw--.2904S2 X-Coremail-Antispam: 1UD129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7v73 VFW2AGmfu7bjvjm3AaLaJ3UjIYCTnIWjp_UUUYx7kC6x804xWl14x267AKxVW8JVW5JwAF c2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII 0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjxv20xvE14v26ryj6F1UM28EF7xv wVC0I7IYx2IY6xkF7I0E14v26F4j6r4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7 xvwVC2z280aVCY1x0267AKxVW0oVCq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40E FcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr 0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcVAKI48JMxk0xIA0c2IEe2xFo4CEbIxv r21l42xK82IYc2Ij64vIr41l4c8EcI0Ec7CjxVAaw2AFwI0_JF0_Jw1l4I8I3I0E4IkC6x 0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2 zVAF1VAY17CE14v26r126r1DMIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF 4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r1j6r4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWU CwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r1j6r4UYxBIda VFxhVjvjDU0xZFpf9x07UWE__UUUUU= X-CM-SenderInfo: 5vklyvpphqwq5kxd4v5lfo033gof0z/ X-Rspamd-Queue-Id: C544EC0013 X-Rspamd-Server: rspam12 X-Stat-Signature: n4yr3k8tsqpgrh11hhr4448kfhjy58bb X-Rspam-User: X-HE-Tag: 1734397166-609254 X-HE-Meta: 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 ETE06W6m lYCGolIgGO/ROIB2RM6+y/gIc38DRgp/+/P/GoqRKMA89v+l8FOquIWbUMFPybBnPGOkLaD8Nnsr3yFExlPJdbTgDXqWNsm+3sRLgCE+nutbCjhvwkwodmWcImVHpiBNugR476r9sM+8ZH/L+t4S8yPZxGOQZtDJ6GqbK2YwNzbjSpcqJal6MKTVKShN8RTrxrpqS X-Bogosity: Ham, tests=bogofilter, spamicity=0.000082, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: on 12/16/2024 10:04 PM, Matthew Wilcox wrote: > On Mon, Dec 16, 2024 at 03:05:26PM +0800, Kemeng Shi wrote: >> Ahhh, right. Thank you for correcting me. Then I would like to use nfs as low-level >> filesystem in example and the potential crash could be triggered in the same steps. > > Have you actually seen this crash, or do you just think it can happen? > I just think it can happen. Sorry for confusion...