diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/memory.c b/mm/memory.c index e17669d4f72f..f2bc6dd15eb8 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3499,6 +3499,16 @@ static bool wp_can_reuse_anon_folio(struct folio *folio, struct vm_area_struct *vma) { /* + * We could currently only reuse a subpage of a large folio if no + * other subpages of the large folios are still mapped. However, + * let's just consistently not reuse subpages even if we could + * reuse in that scenario, and give back a large folio a bit + * sooner. + */ + if (folio_test_large(folio)) + return false; + + /* * We have to verify under folio lock: these early checks are * just an optimization to avoid locking the folio and freeing * the swapcache if there is little hope that we can reuse. |