From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lamorak.hansenpartnership.com (lamorak.hansenpartnership.com [198.37.111.173]) (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 5E1B721E098; Sat, 20 Dec 2025 04:27:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.37.111.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766204854; cv=none; b=A+qlvGzWU0h0wU3T5cN5Ndlo55Ixm8i+HbK93ROZ6TKbKWpKy4bs4GXlGTJFirqh06+0Bpx5uC/G4+7Y2cdkbWnmTKD2hf5Jnw40+cByKcQIJNyQ70JKrA5Ib6sQppF/YOHxq8WNtXQl9haokonrCcq3vbmP5dpAAlyoToViecg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766204854; c=relaxed/simple; bh=GPqQQS0+tuQCPai/9d2h3BVtsFBiwVs3JfY0fwzBYI8=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=F81lZINfVk/bdZj14xx0SUIzHyhB15CEybFL8/DBs1qKJzVb7I7/ET0+4QX4goamq3fvX4UiGHh7c6SJm54Qeg+M4ssWbVQg+01guujSx33wASncgq27qCnwJqI3kFw/VHJtRYPSQjvYzna/ulbo91nhn8ROc++BPnqDfrBLZ+A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=HansenPartnership.com; spf=pass smtp.mailfrom=HansenPartnership.com; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b=FmiOpluS; arc=none smtp.client-ip=198.37.111.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=HansenPartnership.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=HansenPartnership.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b="FmiOpluS" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=hansenpartnership.com; s=20151216; t=1766204851; bh=GPqQQS0+tuQCPai/9d2h3BVtsFBiwVs3JfY0fwzBYI8=; h=Message-ID:Subject:From:To:Date:In-Reply-To:References:From; b=FmiOpluSU1W42S/bbY67YjWgoCpLDRLyXhc0CcNojeChINunFEjEk510OEgvtlDDu O/MrmhvZCk/hYDfCrC8hKQ9JO1alEBDXro+mpBmcEiKuY/J8luD+Jc8rFpemKiy3UC Ak8Fn2LMJ1WVXlxCR2YyIduC4Os/l4h8u/LymGBE= Received: from lingrow.int.hansenpartnership.com (unknown [IPv6:2601:5c4:4300:d341::a774]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lamorak.hansenpartnership.com (Postfix) with ESMTPSA id ABEDE1C01CC; Fri, 19 Dec 2025 23:27:30 -0500 (EST) Message-ID: Subject: Re: [PATCH 0/2] scsi: target+fcoe: replace -EEXIST with -EBUSY in module_init() paths From: James Bottomley To: Daniel Gomez , "Martin K. Petersen" , Hannes Reinecke Cc: Luis Chamberlain , Petr Pavlu , Sami Tolvanen , Aaron Tomlin , Lucas De Marchi , linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-modules@vger.kernel.org, linux-kernel@vger.kernel.org, Daniel Gomez Date: Fri, 19 Dec 2025 23:27:30 -0500 In-Reply-To: <20251220-dev-module-init-eexists-linux-scsi-v1-0-5379db749d54@samsung.com> References: <20251220-dev-module-init-eexists-linux-scsi-v1-0-5379db749d54@samsung.com> Autocrypt: addr=James.Bottomley@HansenPartnership.com; prefer-encrypt=mutual; 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 8mT2Eh9SkH+YVOmaKsajgZgrBxA7fWmGoxXswEVxJIFj3vW7yNc0C5HaUdYa5iGOMs4kg2ht4s7yy7NRQuh7BifWjo6BQ6k4S1H+6axZucxhSV1L6zN9d+lr3Xo/vy1unzA== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.3 Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Sat, 2025-12-20 at 04:37 +0100, Daniel Gomez wrote: > The error code -EEXIST is reserved by the kernel module loader to > indicate that a module with the same name is already loaded. When a > module's init function returns -EEXIST, kmod interprets this as > "module already loaded" and reports success instead of failure [1]. That reference doesn't sufficiently explain why this error code should be unique to modules. EEXIST is used all over the kernel to indicate that something being attempted has already happened or does already exist and that seems perfectly logical .... please explain why you're trying to push it back to being a single use case for modules alone. Regards, James