mm: use IS_ENABLED(CONFIG_COMPACTION) instead of COMPACTION_BUILD
We don't need custom COMPACTION_BUILD anymore, since we have handy
IS_ENABLED().
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 815e584..dd9900c 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -687,13 +687,6 @@
/* Trap pasters of __FUNCTION__ at compile-time */
#define __FUNCTION__ (__func__)
-/* This helps us avoid #ifdef CONFIG_COMPACTION */
-#ifdef CONFIG_COMPACTION
-#define COMPACTION_BUILD 1
-#else
-#define COMPACTION_BUILD 0
-#endif
-
/* This helps us to avoid #ifdef CONFIG_SYMBOL_PREFIX */
#ifdef CONFIG_SYMBOL_PREFIX
#define SYMBOL_PREFIX CONFIG_SYMBOL_PREFIX
diff --git a/mm/vmscan.c b/mm/vmscan.c
index b7ed376..a1ce17f 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1752,7 +1752,7 @@
/* Use reclaim/compaction for costly allocs or under memory pressure */
static bool in_reclaim_compaction(struct scan_control *sc)
{
- if (COMPACTION_BUILD && sc->order &&
+ if (IS_ENABLED(CONFIG_COMPACTION) && sc->order &&
(sc->order > PAGE_ALLOC_COSTLY_ORDER ||
sc->priority < DEF_PRIORITY - 2))
return true;
@@ -2005,7 +2005,7 @@
if (zone->all_unreclaimable &&
sc->priority != DEF_PRIORITY)
continue; /* Let kswapd poll it */
- if (COMPACTION_BUILD) {
+ if (IS_ENABLED(CONFIG_COMPACTION)) {
/*
* If we already have plenty of memory free for
* compaction in this zone, don't free any more.
@@ -2421,7 +2421,8 @@
balance_gap, classzone_idx, 0))
return false;
- if (COMPACTION_BUILD && order && !compaction_suitable(zone, order))
+ if (IS_ENABLED(CONFIG_COMPACTION) && order &&
+ !compaction_suitable(zone, order))
return false;
return true;
@@ -2684,7 +2685,7 @@
* Do not reclaim more than needed for compaction.
*/
testorder = order;
- if (COMPACTION_BUILD && order &&
+ if (IS_ENABLED(CONFIG_COMPACTION) && order &&
compaction_suitable(zone, order) !=
COMPACT_SKIPPED)
testorder = 0;