Hi, Not sure exactly where to direct this so I'm just hitting linux-mm and linux-kernel and hoping someone sees it. We're in the process of updating our embedded targets from Linux 4.4.x to the latest kernel (currently v5.6 but we're planning to go to v5.7 and maybe v5.8 depending on timing). We've hit an issue where across multiple architectures (at least arm, mips and powerpc) we're seeing a significant decrease in the amount of Free/Available memory (40 to 90 MB). It seems to get worse with more processes running but no single process is consuming a significantly greater amount of memory. Is anyone able to provide some hints as to where we should investigate or what in the kernel might have a per-process impact on memory used. Thanks, Chris
