musl - musl - an implementation of the standard library for Linux-based systems

sys/mman.h: add MADV_COLD and MADV_PAGEOUT from linux v5.4

These were mainly introduced so android can optimize the memory usage of unused apps. MADV_COLD hints that the memory range is currently not needed (unlike with MADV_FREE the content is not garbage, it needs to be swapped): linux commit 9c276cc65a58faf98be8e56962745ec99ab87636 mm: introduce MADV_COLD MADV_PAGEOUT hints that the memory range is not needed for a long time so it can be reclaimed immediately independently of memory pressure (unlike with MADV_DONTNEED the content is not garbage): linux commit 1a4e58cce84ee88129d5d49c064bd2852b481357 mm: introduce MADV_PAGEOUT

Diffstat (limited to 'include/sys/mman.h')

1 files changed, 2 insertions, 0 deletions