From: Yongpeng Yang <yangyongpeng@xiaomi.com>
Date: Sat, 27 Dec 2025 07:34:31 +0000 (+0800)
Subject: f2fs: remove non-uptodate folio from the page cache in move_data_block
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9609dd704725a40cd63d915f2ab6c44248a44598;p=thirdparty%2Fkernel%2Flinux.git

f2fs: remove non-uptodate folio from the page cache in move_data_block

During data movement, move_data_block acquires file folio without
triggering a file read. Such folio are typically not uptodate, they need
to be removed from the page cache after gc complete. This patch marks
folio with the PG_dropbehind flag and uses folio_end_dropbehind to
remove folio from the page cache.

Signed-off-by: Yunlei He <heyunlei@xiaomi.com>
Signed-off-by: Yongpeng Yang <yangyongpeng@xiaomi.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 58b291d19f06..d889f7d9a70f 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1453,7 +1453,11 @@ up_out:
 put_out:
 	f2fs_put_dnode(&dn);
 out:
-	f2fs_folio_put(folio, true);
+	if (!folio_test_uptodate(folio))
+		__folio_set_dropbehind(folio);
+	folio_unlock(folio);
+	folio_end_dropbehind(folio);
+	folio_put(folio);
 	return err;
 }