[PATCH] f2fs: don't issue flush in f2fs_flush_device_cache() for nobarrier case

[Chao Yu]

This patch changes f2fs_flush_device_cache() to skip issuing flush for
nobarrier case.

Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
---
 fs/f2fs/segment.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 13ecd2c2c361..f14499632b45 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -759,6 +759,9 @@ int f2fs_flush_device_cache(struct f2fs_sb_info *sbi)
 	if (!f2fs_is_multi_device(sbi))
 		return 0;
 
+	if (test_opt(sbi, NOBARRIER))
+		return 0;
+
 	for (i = 1; i < sbi->s_ndevs; i++) {
 		if (!f2fs_test_bit(i, (char *)&sbi->dirty_device))
 			continue;
-- 
2.26.2