Re: [PATCH 1/5] cramfs: direct memory access support

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To: Nicolas Pitre <nicolas.pitre@xxxxxxxxxx>
Subject: Re: [PATCH 1/5] cramfs: direct memory access support
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Sat, 12 Aug 2017 00:49:27 -0700
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, linux-embedded@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Chris Brandt <Chris.Brandt@xxxxxxxxxxx>
In-reply-to: <20170811192252.19062-2-nicolas.pitre@linaro.org>
User-agent: Mutt/1.8.3 (2017-05-23)

Direct physical memory access in a file system is never safe.
Please make sure this goes through struct dax_operations.

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- Re: [PATCH 1/5] cramfs: direct memory access support
  - From: Nicolas Pitre

References:
- [PATCH 0/5] cramfs refresh for embedded usage
  - From: Nicolas Pitre
- [PATCH 1/5] cramfs: direct memory access support
  - From: Nicolas Pitre

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