Fix fbcode TARGETS for compiling with procfs 0.15.1

Summary:
- Fix top level dirs:
  - frl_ee_infra
  - fbcode_devx
  - hermetic_infra
  - hphp/hack
  - remote_execution
  - service_capacity/projection_framework

Going to need to lean on people to help test here once CI passes ...

Reviewed By: aijayadams

Differential Revision: D49899458

fbshipit-source-id: 4eaa7c3b07bfcf5d23c4ed71a9050ffa2b9ac777

Author: cooperlees

detcore/src/procmaps.rs

@@ -26,12 +26,14 @@ fn display_pathname(p: &MMapPath) -> String {
         MMapPath::Other(s) => format!("[other: {}]", s),
         MMapPath::Anonymous => String::from("[annonymous]"),
         MMapPath::Path(s) => s.display().to_string(),
+        MMapPath::Rollup => String::from("[rollup]"),
+        MMapPath::Vsys(vsys) => vsys.to_string(),
     }
 }
 
 pub fn display(map: &MemoryMap) -> String {
     format!(
-        "{:#x}-{:#x} {} {:x} {:x}:{:x} {} {}",
+        "{:#x}-{:#x} {:?} {:x} {:x}:{:x} {} {}",
         map.address.0,
         map.address.1,
         map.perms,
@@ -57,8 +59,8 @@ where
     match procfs::process::Process::new(pid.as_raw()) {
         Ok(process) => match process.maps() {
             Ok(mut maps) => {
-                maps.retain(filter);
-                Ok(maps)
+                maps.memory_maps.retain(filter);
+                Ok(maps.memory_maps)
             }
             Err(err) => Err(map_error(err)),
         },

detcore/src/syscalls/sysinfo.rs

@@ -64,7 +64,7 @@ impl<T: RecordOrReplay> Detcore<T> {
 
     fn free_ram<G: Guest<Self>>(&self, guest: &mut G, total_ram: u64) -> anyhow::Result<u64> {
         let process = Process::new(guest.pid().as_raw())?;
-        let page_size = procfs::page_size()? as u64;
+        let page_size = procfs::page_size();
         let statm = process.statm()?;
         let used_memory = statm.resident * page_size;
         if used_memory > total_ram {