The source code does not reveal anything of value, it appears it queries the indexer for the names of the photos and webkit is what is used to display the images.
Originally Posted by 60RH
Very primitive, why it is faster then the Touchpad app.
So the only way I know to kick off a refresh is to change the directory to a hidden for instance Photos to .Photos, then reboot then plug in USB, mount USB, using a computer rename the .Photos to Photos and then unplug the USB drive (not ejecting it first), this will cause it to run a fsck and re-index.
Ok looked a little deeper, there is a Framework called Photos, that defines the default Albums and where to get them from and what to do with them... Will look if there is more...
Ok now do not know what to make of it: /var/file-cache/mediathumbnail holds all the thumbnails indexed by the indexer.
I do not have this issue, but you might want to rename that directory, reboot and see if it fixes your photos issue?
Then you can remove the old directory you renamed assume it will create a new thumbnails directory...
But again, I have never had an issue on my Phone when it came to Photos or Music only my touchpad, now there might be a limit on size (amount of files in one directory, this is the case on iOS, so they broke up the DCIM folder)...