f2fs: flush bios to handle cp_error in put_super

Sometimes, if cp_error is set, there remains under-writeback pages, resulting in
kernel hang in put_super.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-01-29 08:57:59 -08:00
commit 17c19120eb