checkroot.sh: should not skip running fsck with JFS root

[Dmitry Bogatov]

[2007-01-29 17:37] Ari Sovijärvi <apz at flipperit.net>
> The JFS filesystem replays its journal when FSCK is run. Without
> journal replay the filesystem will not allow mount as RW. When running
> on batteries and the root filesystem is JFS, after a crash the system is
> left in unusable state since FSCK is skipped and as a result the remount
> to read/write attempt fails.
> 
> Maybe we need a check if we're using JFS and then unconditionally run
> FSCK.

While adding yet another special check into `checkroot.sh' would
definitely solve problem at hand, probably there is something better,
less ad-hoc? Any ideas?