f2fs_io: support unset subcommand for pinfile

This patch adds unset subcommand for pinfile command.

Usage: f2fs_io pinfile unset [target_file]

Signed-off-by: Chao Yu <chao@kernel.org>
Reviewed-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2 files changed