[PATCH -V8 01/21] swap: Enable PMD swap operations for CONFIG_THP_SWAP

Currently, "the swap entry" in the page tables is used for a number of things outside of actual swap, like page migration, etc. We support the THP/PMD "swap entry" for page migration currently and the functions behind this are tied to page migration's config option

[PATCH -V8 01/21] swap: Enable PMD swap operations for CONFIG_THP_SWAP

Currently, "the swap entry" in the page tables is used for a number of things outside of actual swap, like page migration, etc. We support the THP/PMD "swap entry" for page migration currently and the functions behind this are tied to page migration's config option