On 2024/6/10 22:53, Daniel Gomez wrote:
Hi Baolin,
On Thu, Jun 06, 2024 at 07:58:54PM +0800, Baolin Wang wrote:
To support shmem large folio swapout in the following patches, using
xa_get_order() to get the order of the swap entry to calculate the swap
usage of shmem.
Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
---
mm/shmem.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/mm/shmem.c b/mm/shmem.c
index eefdf5c61c04..0ac71580decb 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -865,13 +865,16 @@ unsigned long shmem_partial_swap_usage(struct address_space *mapping,
struct page *page;
unsigned long swapped = 0;
unsigned long max = end - 1;
+ int order;
rcu_read_lock();
xas_for_each(&xas, page, max) {
if (xas_retry(&xas, page))
continue;
- if (xa_is_value(page))
- swapped++;
+ if (xa_is_value(page)) {
+ order = xa_get_order(xas.xa, xas.xa_index);
+ swapped += 1 << order;
I'd get rid of order and simply do:
swapped += 1UL << xa_get_order()
OK. Will do.
