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On Wed, May 13, 2020 at 08:56:42AM +0200, Christoph Hellwig wrote:

Hi Al,

this series fixes a few issues and cleans up the helpers that read from
or write to kernel space buffers, and ensures that we don't change the
address limit if we are using the ->read_iter and ->write_iter methods
that don't need the changed address limit.

Changes since v1:
 - __kernel_write must not take sb_writers
 - unexported __kernel_write

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