f2fs: call sync_fs when f2fs is idle

The sync_fs in f2fs_balance_fs_bg must avoid interrupting current user requests.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-12-05 11:37:14 -08:00
commit f455c8a5f0