diff mbox series

[v1,05/12] fs: proc: use pageblock_nr_pages for reschedule period in read_kcore()

Message ID 20220922011252.2266780-6-zi.yan@sent.com (mailing list archive)
State New
Headers show
Series Make MAX_ORDER adjustable as a kernel boot time parameter. | expand

Commit Message

Zi Yan Sept. 22, 2022, 1:12 a.m. UTC 
From: Zi Yan <ziy@nvidia.com>

MAX_ORDER_NR_PAGES can be increased when it becomes a boot time parameter
in later commits. To make sure read_kcore() reschedule its work in a
constant period, use pageblock_nr_pages instead for reschedule period,
since pageblock_nr_pages is a constant and either the same or half of
MAX_ORDER_NR_PAGES.

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Zi Yan <ziy@nvidia.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Ying Chen <chenying.kernel@bytedance.com>
Cc: Feng Zhou <zhoufeng.zf@bytedance.com>
Cc: linux-fsdevel@vger.kernel.org
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
---
 fs/proc/kcore.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index dff921f7ca33..7dc09d211b48 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -491,7 +491,7 @@  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++ % pageblock_nr_pages == 0) {
 			page_offline_thaw();
 			cond_resched();
 			page_offline_freeze();