From: Zhiguo Jiang <justinjiang@vivo.com>
To: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: opensource.kernel@vivo.com, Zhiguo Jiang <justinjiang@vivo.com>
Subject: [PATCH] mm: fix shrink nr.unqueued_dirty counter issue
Date: Fri, 8 Dec 2023 19:29:32 +0800 [thread overview]
Message-ID: <20231208112933.1385-1-justinjiang@vivo.com> (raw)
It is needed to ensure sc->nr.unqueued_dirty > 0, which can avoid to
set PGDAT_DIRTY flag when sc->nr.unqueued_dirty and sc->nr.file_taken
are both zero at the same time.
Signed-off-by: Zhiguo Jiang <justinjiang@vivo.com>
---
mm/vmscan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
mode change 100644 => 100755 mm/vmscan.c
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 4e3b835c6b4a..12680c392bb0
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -5908,7 +5908,7 @@ static void shrink_node(pg_data_t *pgdat, struct scan_control *sc)
set_bit(PGDAT_WRITEBACK, &pgdat->flags);
/* Allow kswapd to start writing pages during reclaim.*/
- if (sc->nr.unqueued_dirty == sc->nr.file_taken)
+ if (sc->nr.unqueued_dirty && sc->nr.unqueued_dirty == sc->nr.file_taken)
set_bit(PGDAT_DIRTY, &pgdat->flags);
/*
--
2.39.0
next reply other threads:[~2023-12-08 11:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-08 11:29 Zhiguo Jiang [this message]
2024-01-12 1:23 [PATCH] mm: fix shrink nr.unqueued_dirty counter issue Zhiguo Jiang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20231208112933.1385-1-justinjiang@vivo.com \
--to=justinjiang@vivo.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=opensource.kernel@vivo.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.