mm: remove zone_id() and make use of zone_idx() in is_dev_zone()

is_dev_zone() is using zone_id() to check if the zone is ZONE_DEVICE.
zone_id() looks pretty much the same as zone_idx(), and while the use of
zone_idx() is quite spread in the kernel, zone_id() is only being used by
is_dev_zone().

This patch removes zone_id() and makes is_dev_zone() use zone_idx() to
check the zone, so we do not have two things with the same functionality
around.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Oscar Salvador <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Reviewed-by: Pavel Tatashin <[email protected]>
Cc: Pasha Tatashin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions