mimalloc: Restore allow_large_os_pages and abandoned_page_purge options

source/mimalloc/src/options.c

@@ -62,13 +62,13 @@ static mi_option_desc_t options[_mi_option_last] =
   { 1, UNINIT, MI_OPTION(eager_commit) },               // commit per segment directly (4MiB)  (but see also `eager_commit_delay`)
   { 2, UNINIT, MI_OPTION_LEGACY(arena_eager_commit,eager_region_commit) }, // eager commit arena's? 2 is used to enable this only on an OS that has overcommit (i.e. linux)
   { 1, UNINIT, MI_OPTION_LEGACY(purge_decommits,reset_decommits) },        // purge decommits memory (instead of reset) (note: on linux this uses MADV_DONTNEED for decommit)
-  { 0, UNINIT, MI_OPTION_LEGACY(allow_large_os_pages,large_os_pages) },    // use large OS pages, use only with eager commit to prevent fragmentation of VMA's
+  { 1, UNINIT, MI_OPTION_LEGACY(allow_large_os_pages,large_os_pages) },    // use large OS pages, use only with eager commit to prevent fragmentation of VMA's
   { 0, UNINIT, MI_OPTION(reserve_huge_os_pages) },      // per 1GiB huge pages
   {-1, UNINIT, MI_OPTION(reserve_huge_os_pages_at) },   // reserve huge pages at node N
   { 0, UNINIT, MI_OPTION(reserve_os_memory)     },      // reserve OS memory in advance
   { 0, UNINIT, MI_OPTION(deprecated_segment_cache) },   // cache N segments per thread
   { 0, UNINIT, MI_OPTION(deprecated_page_reset) },      // reset page memory on free
-  { 0, UNINIT, MI_OPTION(abandoned_page_purge) },       // purge free page memory when a thread terminates
+  { 1, UNINIT, MI_OPTION(abandoned_page_purge) },       // purge free page memory when a thread terminates
   { 0, UNINIT, MI_OPTION(deprecated_segment_reset) },   // reset segment memory on free (needs eager commit)
 #if defined(__NetBSD__)
   { 0, UNINIT, MI_OPTION(eager_commit_delay) },         // the first N segments per thread are not eagerly committed