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-rw-r--r--include/linux/migrate.h2
-rw-r--r--mm/memory-failure.c8
-rw-r--r--mm/migrate.c29
3 files changed, 16 insertions, 23 deletions
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index f015c059e159..2a411bc0097f 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -35,7 +35,6 @@ enum migrate_reason {
#ifdef CONFIG_MIGRATION
-extern void putback_lru_pages(struct list_head *l);
extern void putback_movable_pages(struct list_head *l);
extern int migrate_page(struct address_space *,
struct page *, struct page *, enum migrate_mode);
@@ -59,7 +58,6 @@ extern int migrate_page_move_mapping(struct address_space *mapping,
int extra_count);
#else
-static inline void putback_lru_pages(struct list_head *l) {}
static inline void putback_movable_pages(struct list_head *l) {}
static inline int migrate_pages(struct list_head *l, new_page_t x,
unsigned long private, enum migrate_mode mode, int reason)
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 9fa6586d5275..b25ed321e667 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1585,7 +1585,13 @@ static int __soft_offline_page(struct page *page, int flags)
ret = migrate_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL,
MIGRATE_SYNC, MR_MEMORY_FAILURE);
if (ret) {
- putback_lru_pages(&pagelist);
+ if (!list_empty(&pagelist)) {
+ list_del(&page->lru);
+ dec_zone_page_state(page, NR_ISOLATED_ANON +
+ page_is_file_cache(page));
+ putback_lru_page(page);
+ }
+
pr_info("soft offline: %#lx: migration failed %d, type %lx\n",
pfn, ret, page->flags);
if (ret > 0)
diff --git a/mm/migrate.c b/mm/migrate.c
index 13bedcc4656b..8a73d66be102 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -72,28 +72,12 @@ int migrate_prep_local(void)
}
/*
- * Add isolated pages on the list back to the LRU under page lock
- * to avoid leaking evictable pages back onto unevictable list.
- */
-void putback_lru_pages(struct list_head *l)
-{
- struct page *page;
- struct page *page2;
-
- list_for_each_entry_safe(page, page2, l, lru) {
- list_del(&page->lru);
- dec_zone_page_state(page, NR_ISOLATED_ANON +
- page_is_file_cache(page));
- putback_lru_page(page);
- }
-}
-
-/*
* Put previously isolated pages back onto the appropriate lists
* from where they were once taken off for compaction/migration.
*
- * This function shall be used instead of putback_lru_pages(),
- * whenever the isolated pageset has been built by isolate_migratepages_range()
+ * This function shall be used whenever the isolated pageset has been
+ * built from lru, balloon, hugetlbfs page. See isolate_migratepages_range()
+ * and isolate_huge_page().
*/
void putback_movable_pages(struct list_head *l)
{
@@ -1725,7 +1709,12 @@ int migrate_misplaced_page(struct page *page, struct vm_area_struct *vma,
nr_remaining = migrate_pages(&migratepages, alloc_misplaced_dst_page,
node, MIGRATE_ASYNC, MR_NUMA_MISPLACED);
if (nr_remaining) {
- putback_lru_pages(&migratepages);
+ if (!list_empty(&migratepages)) {
+ list_del(&page->lru);
+ dec_zone_page_state(page, NR_ISOLATED_ANON +
+ page_is_file_cache(page));
+ putback_lru_page(page);
+ }
isolated = 0;
} else
count_vm_numa_event(NUMA_PAGE_MIGRATE);