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-rw-r--r--mm/memory-failure.c1
-rw-r--r--mm/memory_hotplug.c2
-rw-r--r--mm/mempolicy.c10
-rw-r--r--mm/migrate.c12
4 files changed, 18 insertions, 7 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 44a8cef..1243241 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1292,6 +1292,7 @@ static int soft_offline_huge_page(struct page *page, int flags)
list_add(&hpage->lru, &pagelist);
ret = migrate_huge_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL, 0);
if (ret) {
+ putback_lru_pages(&pagelist);
pr_debug("soft offline: %#lx: migration failed %d, type %lx\n",
pfn, ret, page->flags);
if (ret > 0)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 06662c5..4821338 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -731,6 +731,8 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
goto out;
/* this function returns # of failed pages */
ret = migrate_pages(&source, hotremove_migrate_alloc, 0, 1);
+ if (ret)
+ putback_lru_pages(&source);
out:
return ret;
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index f969da5..21243b2 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -931,8 +931,11 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest,
check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask,
flags | MPOL_MF_DISCONTIG_OK, &pagelist);
- if (!list_empty(&pagelist))
+ if (!list_empty(&pagelist)) {
err = migrate_pages(&pagelist, new_node_page, dest, 0);
+ if (err)
+ putback_lru_pages(&pagelist);
+ }
return err;
}
@@ -1147,9 +1150,12 @@ static long do_mbind(unsigned long start, unsigned long len,
err = mbind_range(mm, start, end, new);
- if (!list_empty(&pagelist))
+ if (!list_empty(&pagelist)) {
nr_failed = migrate_pages(&pagelist, new_vma_page,
(unsigned long)vma, 0);
+ if (nr_failed)
+ putback_lru_pages(&pagelist);
+ }
if (!err && nr_failed && (flags & MPOL_MF_STRICT))
err = -EIO;
diff --git a/mm/migrate.c b/mm/migrate.c
index d917ac3..35e4541 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -883,8 +883,9 @@ out:
*
* The function returns after 10 attempts or if no pages
* are movable anymore because to has become empty
- * or no retryable pages exist anymore. All pages will be
- * returned to the LRU or freed.
+ * or no retryable pages exist anymore.
+ * Caller should call putback_lru_pages to return pages to the LRU
+ * or free list.
*
* Return: Number of pages not migrated or error code.
*/
@@ -931,8 +932,6 @@ out:
if (!swapwrite)
current->flags &= ~PF_SWAPWRITE;
- putback_lru_pages(from);
-
if (rc)
return rc;
@@ -1087,9 +1086,12 @@ set_status:
}
err = 0;
- if (!list_empty(&pagelist))
+ if (!list_empty(&pagelist)) {
err = migrate_pages(&pagelist, new_page_node,
(unsigned long)pm, 0);
+ if (err)
+ putback_lru_pages(&pagelist);
+ }
up_read(&mm->mmap_sem);
return err;