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Message-Id: <60b130b9fc3e422bb91293a172c2113c85e9233a.1723434324.git.baolin.wang@linux.alibaba.com>
Date: Mon, 12 Aug 2024 15:42:03 +0800
From: Baolin Wang <baolin.wang@...ux.alibaba.com>
To: akpm@...ux-foundation.org,
hughd@...gle.com
Cc: willy@...radead.org,
david@...hat.com,
wangkefeng.wang@...wei.com,
chrisl@...nel.org,
ying.huang@...el.com,
21cnbao@...il.com,
ryan.roberts@....com,
shy828301@...il.com,
ziy@...dia.com,
ioworker0@...il.com,
da.gomez@...sung.com,
p.raghav@...sung.com,
baolin.wang@...ux.alibaba.com,
linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v5 2/9] mm: shmem: extend shmem_partial_swap_usage() to support large folio swap
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@...ux.alibaba.com>
---
mm/shmem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/shmem.c b/mm/shmem.c
index 22cdc10f27ea..02fb188d627f 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -890,7 +890,7 @@ unsigned long shmem_partial_swap_usage(struct address_space *mapping,
if (xas_retry(&xas, page))
continue;
if (xa_is_value(page))
- swapped++;
+ swapped += 1 << xa_get_order(xas.xa, xas.xa_index);
if (xas.xa_index == max)
break;
if (need_resched()) {
--
2.39.3
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