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UPX creates anonymous pages that contain the decompressed payload, right? Those aren’t file-backed pages so how would the filesystem even know those pages exist
by Hackbraten 6y ago
UPX creates anonymous pages that contain the decompressed payload, right? Those aren’t file-backed pages so how would the filesystem even know those pages exist?
- dividuum 6y agoThat’s correct and I guess only page deduplication might help in that case. What I meant in my post was just to state that docker can use the page cache despite the massive indirection caused by overlays. I was wondering if that was even possible and it indeed is.