[RFC PATCH 08/15] fs: proc: use PAGES_PER_SECTION for page offline checking period.

From: Zi Yan
Date: Thu Aug 05 2021 - 15:04:06 EST


From: Zi Yan <ziy@xxxxxxxxxx>

It keeps the existing behavior after MAX_ORDER is increased beyond
a section size.

Signed-off-by: Zi Yan <ziy@xxxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: Ying Chen <chenying.kernel@xxxxxxxxxxxxx>
Cc: Feng Zhou <zhoufeng.zf@xxxxxxxxxxxxx>
Cc: linux-fsdevel@xxxxxxxxxxxxxxx
Cc: linux-mm@xxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
fs/proc/kcore.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index 3f148759a5fd..77b7ba48fb44 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -486,7 +486,7 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos)
}
}

- if (page_offline_frozen++ % MAX_ORDER_NR_PAGES == 0) {
+ if (page_offline_frozen++ % PAGES_PER_SECTION == 0) {
page_offline_thaw();
cond_resched();
page_offline_freeze();
--
2.30.2