Do the per-cpu dereferencing of the fbatches once which saves 14 bytes
of text and several percpu relocations.
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
mm/swap.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/mm/swap.c b/mm/swap.c
index 7966aa6bdd3f..5ea6ae795f0d 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -620,7 +620,8 @@ static void lru_lazyfree_fn(struct lruvec *lruvec, struct folio *folio)
*/
void lru_add_drain_cpu(int cpu)
{
- struct folio_batch *fbatch = &per_cpu(cpu_fbatches.lru_add, cpu);
+ struct cpu_fbatches *fbatches = &per_cpu(cpu_fbatches, cpu);
+ struct folio_batch *fbatch = &fbatches->lru_add;
if (folio_batch_count(fbatch))
folio_batch_move_lru(fbatch, lru_add_fn);
@@ -636,15 +637,15 @@ void lru_add_drain_cpu(int cpu)
local_unlock_irqrestore(&lru_rotate.lock, flags);
}
- fbatch = &per_cpu(cpu_fbatches.lru_deactivate_file, cpu);
+ fbatch = &fbatches->lru_deactivate_file;
if (folio_batch_count(fbatch))
folio_batch_move_lru(fbatch, lru_deactivate_file_fn);
- fbatch = &per_cpu(cpu_fbatches.lru_deactivate, cpu);
+ fbatch = &fbatches->lru_deactivate;
if (folio_batch_count(fbatch))
folio_batch_move_lru(fbatch, lru_deactivate_fn);
- fbatch = &per_cpu(cpu_fbatches.lru_lazyfree, cpu);
+ fbatch = &fbatches->lru_lazyfree;
if (folio_batch_count(fbatch))
folio_batch_move_lru(fbatch, lru_lazyfree_fn);
--
2.35.1
