diff options
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 003886606a22..337a40201c82 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1987,6 +1987,13 @@ int migrate_misplaced_page(struct page *page, struct vm_area_struct *vma, goto out; /* + * Also do not migrate dirty pages as not all filesystems can move + * dirty pages in MIGRATE_ASYNC mode which is a waste of cycles. + */ + if (page_is_file_cache(page) && PageDirty(page)) + goto out; + + /* * Rate-limit the amount of data that is being migrated to a node. * Optimal placement is no good if the memory bus is saturated and * all the time is being spent migrating! |