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-rw-r--r--mm/compaction.c20
1 files changed, 9 insertions, 11 deletions
diff --git a/mm/compaction.c b/mm/compaction.c
index 3a509fbf2bea..621508e0ecd5 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1297,8 +1297,7 @@ move_freelist_head(struct list_head *freelist, struct page *freepage)
if (!list_is_last(freelist, &freepage->lru)) {
list_cut_before(&sublist, freelist, &freepage->lru);
- if (!list_empty(&sublist))
- list_splice_tail(&sublist, freelist);
+ list_splice_tail(&sublist, freelist);
}
}
@@ -1315,8 +1314,7 @@ move_freelist_tail(struct list_head *freelist, struct page *freepage)
if (!list_is_first(freelist, &freepage->lru)) {
list_cut_position(&sublist, freelist, &freepage->lru);
- if (!list_empty(&sublist))
- list_splice_tail(&sublist, freelist);
+ list_splice_tail(&sublist, freelist);
}
}
@@ -1380,7 +1378,7 @@ static int next_search_order(struct compact_control *cc, int order)
static unsigned long
fast_isolate_freepages(struct compact_control *cc)
{
- unsigned int limit = min(1U, freelist_scan_limit(cc) >> 1);
+ unsigned int limit = max(1U, freelist_scan_limit(cc) >> 1);
unsigned int nr_scanned = 0;
unsigned long low_pfn, min_pfn, highest = 0;
unsigned long nr_isolated = 0;
@@ -1492,11 +1490,11 @@ fast_isolate_freepages(struct compact_control *cc)
spin_unlock_irqrestore(&cc->zone->lock, flags);
/*
- * Smaller scan on next order so the total scan ig related
+ * Smaller scan on next order so the total scan is related
* to freelist_scan_limit.
*/
if (order_scanned >= limit)
- limit = min(1U, limit >> 1);
+ limit = max(1U, limit >> 1);
}
if (!page) {
@@ -2722,9 +2720,9 @@ int sysctl_compaction_handler(struct ctl_table *table, int write,
}
#if defined(CONFIG_SYSFS) && defined(CONFIG_NUMA)
-static ssize_t sysfs_compact_node(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static ssize_t compact_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
{
int nid = dev->id;
@@ -2737,7 +2735,7 @@ static ssize_t sysfs_compact_node(struct device *dev,
return count;
}
-static DEVICE_ATTR(compact, 0200, NULL, sysfs_compact_node);
+static DEVICE_ATTR_WO(compact);
int compaction_register_node(struct node *node)
{