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| author | Chanho Min | 2016-05-20 02:11:57 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2016-05-20 04:12:14 +0200 |
| commit | 29f9cb53d25cd9916537b44b0af7f0b95a2e4438 (patch) | |
| tree | e3a230c8660143be59b2d0ae4cd5b90a8e385fdd /include/linux/mmzone.h | |
| parent | mm, compaction: skip blocks where isolation fails in async direct compaction (diff) | |
| download | kernel-qcow2-linux-29f9cb53d25cd9916537b44b0af7f0b95a2e4438.tar.gz kernel-qcow2-linux-29f9cb53d25cd9916537b44b0af7f0b95a2e4438.tar.xz kernel-qcow2-linux-29f9cb53d25cd9916537b44b0af7f0b95a2e4438.zip | |
mm/highmem: simplify is_highmem()
is_highmem() can be simplified by use of is_highmem_idx(). This patch
removes redundant code and will make it easier to maintain if the zone
policy is changed or a new zone is added.
(akpm: saves me 25 bytes of text per is_highmem() callsite)
Signed-off-by: Chanho Min <chanho.min@lge.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mmzone.h')
| -rw-r--r-- | include/linux/mmzone.h | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index c60df9257cc7..150c6049f961 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -828,10 +828,7 @@ static inline int is_highmem_idx(enum zone_type idx) static inline int is_highmem(struct zone *zone) { #ifdef CONFIG_HIGHMEM - int zone_off = (char *)zone - (char *)zone->zone_pgdat->node_zones; - return zone_off == ZONE_HIGHMEM * sizeof(*zone) || - (zone_off == ZONE_MOVABLE * sizeof(*zone) && - zone_movable_is_highmem()); + return is_highmem_idx(zone_idx(zone)); #else return 0; #endif |