Jan Kara <jack@xxxxxxx> writes: > Well, one of the problems with keeping compressed data is that for mmap(2) > you have to have pages decompressed so that CPU can access them. So keeping > compressed data in the page cache would add a bunch of complexity. That > being said keeping compressed data cached somewhere else than in the page > cache may certainly me worth it and then just filling page cache on demand > from this data... True... Did that multi generational LRU cache ever get merged? I was thinking you could use that to make sure that the kernel prefers to reclaim the decompressed pages in favor of keeping the compressed ones around.
