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由 Todd Kjos 提交于
Now that alloc->buffer points to the userspace vm_area rename buffer->data to buffer->user_data and rename local pointers that hold user addresses. Also use the "__user" tag to annotate all user pointers so sparse can flag cases where user pointer vaues are copied to kernel pointers. Refactor code to use offsets instead of user pointers. Signed-off-by: NTodd Kjos <tkjos@google.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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