From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-m16.yeah.net (mail-m16.yeah.net [220.197.32.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F38612472A2; Tue, 7 Jul 2026 03:30:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=220.197.32.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783395043; cv=none; b=Xu+1rHtI6s7P/qin6x0bm60LVVKtkaA+gtiqn7rLRbdFlTyu/pO/qvnFB+FJnlol0zqxY2r93AfhA9CklroqRlbU0ZrO5/opJnBPk0/r7jcIXHX6INyDWTo3YvbNdgFC8+jMkhV+fFD59uW94RN43OUkWWOvPlwQykWeTmQ5nTg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783395043; c=relaxed/simple; bh=65eWBW76n6xnTDAEVX1mX0bMCICpLCKgnSftt0Le7VI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=KrUMyzpGCEo5GH5aMRaPq7UJeVs88iZqPqb/tgMPlsEirdzQUncWfqmH7Ijs9qfAPWiPp86RjRJoJS64CXQqcnAjNdFB7M9eVa2s7J7yoPUdRKVJN08owzLjcWm2kqWzqtEm+VBgtMimfWVh1/9Ut/NneATDbt5YOlucP7MJfhM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=yeah.net; spf=pass smtp.mailfrom=yeah.net; dkim=pass (1024-bit key) header.d=yeah.net header.i=@yeah.net header.b=eIX8ncNr; arc=none smtp.client-ip=220.197.32.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=yeah.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=yeah.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=yeah.net header.i=@yeah.net header.b="eIX8ncNr" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yeah.net; s=s110527; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=+5 m/UemJIU0WVqwjiIZfNMwHQhAxT0m+4XEKg0K3rIw=; b=eIX8ncNrHfGyVCnXO9 fL/wfo7kam+d7FKkgVGRG6DtSRKCmArUARRs8vlRb84Jf65KZiGaqQWpuS7JZJFL j7sPVFGph8qopb/XIqSsh6MHfI2tGXnH87tAV7QkcavruEI3w2u5S9vbRm+8zcOz gSQlYEuDG+I7ieOEi01PbbVmo= Received: from zhang.. (unknown []) by gzsmtp1 (Coremail) with UTF8SMTPSA id Mc8vCgCHs8TKckxq0bQsAQ--.4589S4; Tue, 07 Jul 2026 11:30:20 +0800 (CST) From: Ziran Zhang To: Anders Larsen Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Ziran Zhang Subject: [Question] QNX4 write support? Date: Tue, 7 Jul 2026 11:29:50 +0800 Message-ID: <20260707032950.3999-1-zhangcoder@yeah.net> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:Mc8vCgCHs8TKckxq0bQsAQ--.4589S4 X-Coremail-Antispam: 1Uf129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7v73 VFW2AGmfu7bjvjm3AaLaJ3UbIYCTnIWIevJa73UjIFyTuYvj4RJUUUUUUUU X-CM-SenderInfo: x2kd0wpfrgv2o61htxgoqh3/1tbiOQx9PmpMcszPGAAA35 Hi Anders, I noticed the QNX4 filesystem in the Linux kernel is read-only. Just curious why write support is missing? Is it due to lack of documentation? Thanks, Ziran Zhang