> It almost needs a flag on the directory scan. One that says "just give
> me the inode number, don't try to access subdirectories until I need
> to". That would take care of disconnected NFS, AFS, external disks and
> CDs that are powered off, floppies that have been removed, etc.
It turns out that there is a simple solution, which is to change your
libc to use the new sys_getcwd() call. This just walks the dentry chain
without doing any revalidations, and will be much faster than the old
getcwd() as well. Check fs/dcache.c for details.
Apart from this, there's not much that can be done to make a traditional
getcwd() work for disconnected NFS or removed volumes -- the old-style
implementation works by reading the .. directories to look for an inode
number matching the current one.
Regards,
Bill
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