actualizado script libera_ram.sh
Revert "swap: discard while swapping only if SWAP_FLAG_DISCARD_PAGES"

This reverts commit d786db3cca40c4ec5a47ce2d0e8a74fd37e5627b.
Revert "mm: add support for a filesystem to activate swap files and use direct_IO for writing swap pages"

This reverts commit accf621e405a0ad6bbed0c730e448a8064fea56a.