From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=95.215.58.250 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794192989; b=J8RrwaIS44j6QiVAC1SXx5ToJYlK57ruTlLq8F2EaKUnhWobGoMRVkm/OAOyz1gceqca zo9opbwN3UC/Mkj1HjmBTPvcvm2nvssYlgX358t0t3Enpi8HsT87fH+1Mnc0lW1mmR79d qBEnzC16u/T24WEH9ueh5Gza3DmCx3st5g+7vX3lABwYScicJ93lsq2GVVsLJR5rNCBYd 0EtkCPwCs/j8rUUxhtsQ8LwCcuKpOdeZbqJqsvKULnP67rw9DkiWaSpcVu2Q/PVTvU61D dyV4hJHjPgduC2MetRbPmyiiT0htA+WELNtzy6lbBPETjl6KpxjQuxnn1wEiV9BRbOw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794192989; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:Message-ID:Date:MIME-Version:User-Agent: Subject:To:Cc:References:From:In-Reply-To:Content-Type: Content-Transfer-Encoding; bh=n+4TwEwtUO3KwUkahtVVwASlPtdRGoMNVNlYwVFyhNM=; b=Exwsf7Pevua+YQgGGY5HQ5/2/mgrl8gPbtbCRZQz4i5pB1pC2vgImSNbBdKJtfVwweh5 KgJ7mm6GOWIux8SfaAbdb3HKwV+2QdCeTmITTX0iEQtPCb3WRfYFQhvGgijaGmAUyMvoG xd03rJogMKDu4fVd7501mVW9UJ2SrK6Y2oAOUh+5Qe0TZnM+HjMsCJe7UCByWYMPBfvft WjdWn7RlPtjgmcKDMf5k1XblQ4zckpHD3xFU+sM7+wDnVVVp+egDEq7VvlsdY4tg+Mw8z GrD1bcQaj6SwyFppZfIMC9N8+jQ3u+gX7RwLfY3AA/xvf8v7Iy9bGdRS3IkzlORgVVA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=dLqtx658; arc=none smtp.remote-ip=95.215.58.250 Received: from mta1.migadu.com (out-250.mta1.migadu.com [95.215.58.250]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D3B94606A322 for ; Mon, 9 Nov 2026 02:56:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org D3B94606A322 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=dLqtx658 X-Envelope-To: nvdimm@lists.linux.dev DKIM-Signature: a=rsa-sha256; bh=E6nbi2q9BWguhq7sUJJq5GhBbCo7Z1GUqwFoBaxZTl4=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1794192987; v=1; x=1794797787; b=dLqtx658wixUpSvGUIYbocKc3P4pgfJX8GTgBwqreDl3IuJU6xbu+Lu0V4Umg9JCwNa60YC9 TXnhYXjCKoABDlBeUDyWdbEosq2Ehcab/fUJtYs9+j5MXJSm2RKsiD2PjThwK0KisbmXtWAPIOk Hcc2N5mMkDWoyD9t1jt7md5o= X-Envelope-To: nvdimm@lists.linux.dev Received: by smtp.migadu.com with ESMTPS id f9c8e6b6d36b6895; Mon, 09 Nov 2026 02:56:26 +0000 X-Mizu-Trace-ID: f9c8e6b6d36b6895 X-Migadu-Flow: FLOW_OUT Message-ID: Date: Mon, 9 Nov 2026 10:56:11 +0800 X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC 5/6] iomap: refuse dmabuf iterators on contents-encrypted inodes To: Christoph Hellwig Cc: Jens Axboe , Dan Williams , Matthew Wilcox , Jan Kara , Alexander Viro , Christian Brauner , tytso@mit.edu, Andreas Dilger , Baokun Li , Ojaswin Mujoo , "Ritesh Harjani (IBM)" , Zhang Yi , "Darrick J. Wong" , Andrew Morton , asml.silence@gmail.com, Anuj Gupta , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, nvdimm@lists.linux.dev, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-mm@kvack.org, Li Wang References: <20261105065847.196540-1-mengmeng.zhao@linux.dev> <20261105065847.196540-6-mengmeng.zhao@linux.dev> <20261106104403.GC5668@lst.de> From: Mengmeng Zhao In-Reply-To: <20261106104403.GC5668@lst.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 11/6/26 18:44, Christoph Hellwig wrote: > I think contents-encrypted should be content-encrypted. > > But we really need to find a way to make these checks more > systematic instead of sprinkling them everywhere. E.g. have a flag > in file->f_mode to allow it, which then only leaves the direct I/O > to buffered I/O fallback as a special case. > Agreed, adding the check to every file system is quite tedious. We'll look into redesigning the implementation based on your suggestion. Thanks for your time!