We need to use count_swpout_vm_event() for sio_write_complete() and
sio_read_complete(), to get correct counting.
This patch should be squased into
MM: handle THP in swap_*page_fs()
Reported-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Signed-off-by: NeilBrown <neilb@xxxxxxx>
---
mm/page_io.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/mm/page_io.c b/mm/page_io.c
index d636a3531cad..3e2e9029ce50 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -280,8 +280,10 @@ static void sio_write_complete(struct kiocb *iocb, long ret)
set_page_dirty(page);
ClearPageReclaim(page);
}
- } else
- count_vm_events(PSWPOUT, sio->pages);
+ } else {
+ for (p = 0; p < sio->pages; p++)
+ count_swpout_vm_event(sio->bvec[p].bv_page);
+ }
for (p = 0; p < sio->pages; p++)
end_page_writeback(sio->bvec[p].bv_page);
@@ -390,9 +392,9 @@ static void sio_read_complete(struct kiocb *iocb, long ret)
struct page *page = sio->bvec[p].bv_page;
SetPageUptodate(page);
+ count_swpout_vm_event(page);
unlock_page(page);
}
- count_vm_events(PSWPIN, sio->pages);
} else {
for (p = 0; p < sio->pages; p++) {
struct page *page = sio->bvec[p].bv_page;
--
2.36.0
