linux-kernel - Re: [PATCH v4 4/5] cramfs: add mmap support

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Message-ID: <20171001083052.GB17116@infradead.org>
Date:   Sun, 1 Oct 2017 01:30:52 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Nicolas Pitre <nicolas.pitre@...aro.org>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-embedded@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Chris Brandt <Chris.Brandt@...esas.com>
Subject: Re: [PATCH v4 4/5] cramfs: add mmap support

up_read(&mm->mmap_sem) in the fault path is a still a complete
no-go,

NAK