linux-kernel - [PATCH 3/3] f2fs: fix to cover meta flush with cp

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Date:   Wed, 27 May 2020 18:27:53 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     <jaegeuk@...nel.org>
CC:     <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>, <chao@...nel.org>,
        Chao Yu <yuchao0@...wei.com>
Subject: [PATCH 3/3] f2fs: fix to cover meta flush with cp_lock

meta inode page should be flushed under cp_lock, fix it.

Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
 fs/f2fs/file.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index f7de2a1da528..0fcae4d90074 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2260,7 +2260,9 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
 		set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
 		break;
 	case F2FS_GOING_DOWN_METAFLUSH:
+		mutex_lock(&sbi->cp_mutex);
 		f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
+		mutex_unlock(&sbi->cp_mutex);
 		f2fs_stop_checkpoint(sbi, false);
 		set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
 		break;
-- 
2.18.0.rc1