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authorMel Gorman <mgorman@techsingularity.net>2016-05-20 02:14:13 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-20 04:12:14 +0200
commit93ea9964d14ad583492ffb9ab7543f015876aaf2 (patch)
tree1225c8ae0c5d85b40e386d860abcd24f44664633 /mm/internal.h
parentmm, page_alloc: avoid looking up the first zone in a zonelist twice (diff)
downloadlinux-93ea9964d14ad583492ffb9ab7543f015876aaf2.tar.xz
linux-93ea9964d14ad583492ffb9ab7543f015876aaf2.zip
mm, page_alloc: remove field from alloc_context
The classzone_idx can be inferred from preferred_zoneref so remove the unnecessary field and save stack space. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
-rw-r--r--mm/internal.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/internal.h b/mm/internal.h
index d1ddd71c1bbf..3ac544f1963f 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -103,12 +103,13 @@ struct alloc_context {
struct zonelist *zonelist;
nodemask_t *nodemask;
struct zoneref *preferred_zoneref;
- int classzone_idx;
int migratetype;
enum zone_type high_zoneidx;
bool spread_dirty_pages;
};
+#define ac_classzone_idx(ac) zonelist_zone_idx(ac->preferred_zoneref)
+
/*
* Locate the struct page for both the matching buddy in our
* pair (buddy1) and the combined O(n+1) page they form (page).