[PATCH 09/11] mount.cc: Implement poor-man's cache

[Ben]

On 18-01-2021 12:51, Corinna Vinschen via Cygwin-patches wrote:
> Ok, so hash_prefix reduces the path to a drive letter or the UNC path
> prefix and hashes it.  However, what about partitions mounted to a
> subdir of, say, drive C?  In that case the hashing goes awry, because
> you're comparing with the hash of drive C while the path is actually
> pointing to another partition.
> 
How can I mount a partition as a subdir of drive C?
For some reason I can't:
$ mount /cygdrive/e/Temp/dummy /cygdrive/c/Temp/dummy/dummyone
mount: /cygdrive/c/Temp/dummy/dummyone: Invalid argument