The patch titled
Subject: mm: compaction: Fix compiler warning
has been added to the -mm tree. Its filename is
mm-compaction-fix-compiler-warning.patch
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------------------------------------------------------
From: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
Subject: mm: compaction: Fix compiler warning
compact_capture_page() is only used if compaction is enabled so it should
be moved into the corresponding #ifdef.
Signed-off-by: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 108 +++++++++++++++++++++++-----------------------
1 file changed, 54 insertions(+), 54 deletions(-)
diff -puN mm/compaction.c~mm-compaction-fix-compiler-warning mm/compaction.c
--- a/mm/compaction.c~mm-compaction-fix-compiler-warning
+++ a/mm/compaction.c
@@ -215,60 +215,6 @@ static bool suitable_migration_target(st
return false;
}
-static void compact_capture_page(struct compact_control *cc)
-{
- unsigned long flags;
- int mtype, mtype_low, mtype_high;
-
- if (!cc->page || *cc->page)
- return;
-
- /*
- * For MIGRATE_MOVABLE allocations we capture a suitable page ASAP
- * regardless of the migratetype of the freelist is is captured from.
- * This is fine because the order for a high-order MIGRATE_MOVABLE
- * allocation is typically at least a pageblock size and overall
- * fragmentation is not impaired. Other allocation types must
- * capture pages from their own migratelist because otherwise they
- * could pollute other pageblocks like MIGRATE_MOVABLE with
- * difficult to move pages and making fragmentation worse overall.
- */
- if (cc->migratetype == MIGRATE_MOVABLE) {
- mtype_low = 0;
- mtype_high = MIGRATE_PCPTYPES;
- } else {
- mtype_low = cc->migratetype;
- mtype_high = cc->migratetype + 1;
- }
-
- /* Speculatively examine the free lists without zone lock */
- for (mtype = mtype_low; mtype < mtype_high; mtype++) {
- int order;
- for (order = cc->order; order < MAX_ORDER; order++) {
- struct page *page;
- struct free_area *area;
- area = &(cc->zone->free_area[order]);
- if (list_empty(&area->free_list[mtype]))
- continue;
-
- /* Take the lock and attempt capture of the page */
- if (!compact_trylock_irqsave(&cc->zone->lock, &flags, cc))
- return;
- if (!list_empty(&area->free_list[mtype])) {
- page = list_entry(area->free_list[mtype].next,
- struct page, lru);
- if (capture_free_page(page, cc->order, mtype)) {
- spin_unlock_irqrestore(&cc->zone->lock,
- flags);
- *cc->page = page;
- return;
- }
- }
- spin_unlock_irqrestore(&cc->zone->lock, flags);
- }
- }
-}
-
/*
* Isolate free pages onto a private freelist. Caller must hold zone->lock.
* If @strict is true, will abort returning 0 on any invalid PFNs or non-free
@@ -945,6 +891,60 @@ unsigned long compaction_suitable(struct
return COMPACT_CONTINUE;
}
+static void compact_capture_page(struct compact_control *cc)
+{
+ unsigned long flags;
+ int mtype, mtype_low, mtype_high;
+
+ if (!cc->page || *cc->page)
+ return;
+
+ /*
+ * For MIGRATE_MOVABLE allocations we capture a suitable page ASAP
+ * regardless of the migratetype of the freelist is is captured from.
+ * This is fine because the order for a high-order MIGRATE_MOVABLE
+ * allocation is typically at least a pageblock size and overall
+ * fragmentation is not impaired. Other allocation types must
+ * capture pages from their own migratelist because otherwise they
+ * could pollute other pageblocks like MIGRATE_MOVABLE with
+ * difficult to move pages and making fragmentation worse overall.
+ */
+ if (cc->migratetype == MIGRATE_MOVABLE) {
+ mtype_low = 0;
+ mtype_high = MIGRATE_PCPTYPES;
+ } else {
+ mtype_low = cc->migratetype;
+ mtype_high = cc->migratetype + 1;
+ }
+
+ /* Speculatively examine the free lists without zone lock */
+ for (mtype = mtype_low; mtype < mtype_high; mtype++) {
+ int order;
+ for (order = cc->order; order < MAX_ORDER; order++) {
+ struct page *page;
+ struct free_area *area;
+ area = &(cc->zone->free_area[order]);
+ if (list_empty(&area->free_list[mtype]))
+ continue;
+
+ /* Take the lock and attempt capture of the page */
+ if (!compact_trylock_irqsave(&cc->zone->lock, &flags, cc))
+ return;
+ if (!list_empty(&area->free_list[mtype])) {
+ page = list_entry(area->free_list[mtype].next,
+ struct page, lru);
+ if (capture_free_page(page, cc->order, mtype)) {
+ spin_unlock_irqrestore(&cc->zone->lock,
+ flags);
+ *cc->page = page;
+ return;
+ }
+ }
+ spin_unlock_irqrestore(&cc->zone->lock, flags);
+ }
+ }
+}
+
static int compact_zone(struct zone *zone, struct compact_control *cc)
{
int ret;
_
Patches currently in -mm which might be from thierry.reding@xxxxxxxxxxxxxxxxx are
linux-next.patch
mm-compaction-fix-compiler-warning.patch
drivers-video-backlight-lp855x_blc-use-generic-pwm-functions.patch
drivers-video-backlight-lp855x_blc-use-generic-pwm-functions-fix.patch
drivers-video-backlight-lp855x_blc-remove-unnecessary-mutex-code.patch
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