io-mapping: Always create a struct to hold metadata about the io-mapping

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Currently, we only allocate a structure to hold metadata if we need to
allocate an ioremap for every access, such as on x86-32. However, it
would be useful to store basic information about the io-mapping, such as
its page protection, on all platforms.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: linux-mm@kvack.org
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160819155428.1670-4-chris@chris-wilson.co.uk

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Chris Wilson 2016-08-19 16:54:26 +01:00

parent 8678fdaf39

commit cafaf14a5d

1 changed files with 57 additions and 35 deletions

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92

include/linux/io-mapping.h

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