From 4ff70ea40c56196c3d7c30e11571799d27a18381 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Tue, 26 Jan 2021 17:00:42 -0800 Subject: [PATCH] FROMGIT: f2fs: flush data when enabling checkpoint back During checkpoint=disable period, f2fs bypasses all the synchronous IOs such as sync and fsync. So, when enabling it back, we must flush all of them in order to keep the data persistent. Otherwise, suddern power-cut right after enabling checkpoint will cause data loss. Bug: 171063590 Fixes: 4354994f097d ("f2fs: checkpoint disabling") Cc: stable@vger.kernel.org Signed-off-by: Jaegeuk Kim Reviewed-by: Chao Yu (cherry picked from commit 8d52dbb373579b48f5758dd0cdd2ac0fb4e5be7f git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git dev) Signed-off-by: Jaegeuk Kim Change-Id: Iaca2d6fc1841fffa8677d5d592732c94241fb3fb --- fs/f2fs/super.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b4a07fe62d1a..972736d71fa4 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1796,6 +1796,9 @@ restore_flag: static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) { + /* we should flush all the data to keep data consistency */ + sync_inodes_sb(sbi->sb); + down_write(&sbi->gc_lock); f2fs_dirty_to_prefree(sbi);