| From: Miaohe Lin <linmiaohe@huawei.com> |
| Subject: mm/vmscan: activate swap-backed executable folios after first usage |
| |
| We should activate swap-backed executable folios (e.g. tmpfs) after first |
| usage so that executable code gets yet better chance to stay in memory. |
| |
| Link: https://lkml.kernel.org/r/20220425111232.23182-4-linmiaohe@huawei.com |
| Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> |
| Suggested-by: Huang, Ying <ying.huang@intel.com> |
| Reviewed-by: Huang, Ying <ying.huang@intel.com> |
| Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> |
| Cc: Christoph Hellwig <hch@lst.de> |
| Cc: Oscar Salvador <osalvador@suse.de> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| --- |
| |
| mm/vmscan.c | 4 ++-- |
| 1 file changed, 2 insertions(+), 2 deletions(-) |
| |
| --- a/mm/vmscan.c~mm-vmscan-activate-swap-backed-executable-folios-after-first-usage |
| +++ a/mm/vmscan.c |
| @@ -1412,9 +1412,9 @@ static enum page_references folio_check_ |
| return PAGEREF_ACTIVATE; |
| |
| /* |
| - * Activate file-backed executable folios after first usage. |
| + * Activate executable folios after first usage. |
| */ |
| - if ((vm_flags & VM_EXEC) && !folio_test_swapbacked(folio)) |
| + if (vm_flags & VM_EXEC) |
| return PAGEREF_ACTIVATE; |
| |
| return PAGEREF_KEEP; |
| _ |
