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Date: Sun, 1 Oct 2017 01:30:52 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>, linux-mm@kvack.org,
        linux-fsdevel@vger.kernel.org, linux-embedded@vger.kernel.org,
        linux-kernel@vger.kernel.org, Chris Brandt <Chris.Brandt@renesas.com>
Subject: Re: [PATCH v4 4/5] cramfs: add mmap support
Message-ID: <20171001083052.GB17116@infradead.org>
References: <20170927233224.31676-1-nicolas.pitre@linaro.org>
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up_read(&mm->mmap_sem) in the fault path is a still a complete
no-go,

NAK