Re: Rootfs mounted from user space - problem with umount

[John Zielinski]

William Lee Irwin III wrote:

> Looks like either namespace->sem or sb->s_umount; you should be able
> to put some instrumentation code in down_write() and/or down_read() to
> see who acquired it first by checking to see if the sem acquired belongs
> to rootfs' sb or some namespace (doubtful you'll create many of them).
>
>
>  

Found it.  It was a stupid mistake.  I made the get_sb function return 
the same superblock when it was still get_sb_nodev.  When I switched it 
to the proper get_sb_single I forgot to remove the code that returned 
the old sb so it wasn't calling get_sb_single to increase the sb's usage 
count.  Doh!

John




-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/