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

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

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 05ab5ae..1596502 100644 (file)
--- 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;