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mm, page_alloc: remove field from alloc_context

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The classzone_idx can be inferred from preferred_zoneref so remove the
unnecessary field and save stack space.

Signed-off-by: Mel Gorman <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Jesper Dangaard Brouer <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Mel Gorman 2016-05-19 17:14:13 -07:00 • committed by Linus Torvalds
commit 93ea9964d1
3 changed files with 7 additions and 8 deletions
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4
mm/compaction.c
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@ -1602,7 +1602,7 @@ unsigned long try_to_compact_pages(gfp_t gfp_mask, unsigned int order,
status = compact_zone_order(zone, order, gfp_mask, mode,
&zone_contended, alloc_flags,
ac->classzone_idx);
ac_classzone_idx(ac));
rc = max(status, rc);
/*
* It takes at least one zone that wasn't lock contended
@ -1612,7 +1612,7 @@ unsigned long try_to_compact_pages(gfp_t gfp_mask, unsigned int order,
/* If a normal allocation would succeed, stop compacting */
if (zone_watermark_ok(zone, order, low_wmark_pages(zone),
ac->classzone_idx, alloc_flags)) {
ac_classzone_idx(ac), alloc_flags)) {
/*
* We think the allocation will succeed in this zone,
* but it is not certain, hence the false. The caller