====== vfs子树：虚拟文件系统信息和行为控制 ======

直辖变量：

||vfs.altbufferflushes|| ||
||vfs.bdwriteskip|| ||
||vfs.bufdefragcnt|| ||
||vfs.buffreekvacnt|| ||
||vfs.bufmallocspace|| ||
||vfs.bufreusecnt|| ||
||vfs.bufspace|| ||
||vfs.conflist|| ||
||vfs.ctl|| ||
||vfs.dirtybufferflushes|| ||
||vfs.dirtybufthresh|| ||
||vfs.flushwithdeps|| ||
||vfs.freevnodes|| ||
||vfs.getnewbufcalls|| ||
||vfs.getnewbufrestarts|| ||
||vfs.hibufspace|| ||
||vfs.hidirtybuffers|| ||
||vfs.hifreebuffers|| ||
||vfs.hirunningspace|| ||
||vfs.lobufspace|| ||
||vfs.lodirtybuffers|| ||
||vfs.lofreebuffers|| ||
||vfs.lookup_shared|| ||
||vfs.lorunningspace|| ||
||vfs.maxbufspace|| ||
||vfs.maxmallocbufspace|| ||
||vfs.numdirtybuffers|| ||
||vfs.numfreebuffers|| ||
||vfs.numvnodes|| ||
||vfs.read_max|| ||
||vfs.reassignbufcalls|| ||
||vfs.recursiveflushes|| ||
||vfs.runningbufspace|| ||
||vfs.timestamp_precision|| ||
||vfs.usermount|| ||
||vfs.vmiodirenable|| ||
||vfs.wantfreevnodes|| ||
||vfs.worklist_len|| ||
||vfs.write_behind|| ||

子树：

  * [[doc:s:sysctl:vfs.cache]]
  * [[doc:s:sysctl:vfs.devfs]]
  * [[doc:s:sysctl:vfs.ffs]]
  * [[doc:s:sysctl:vfs.nfs]]
  * [[doc:s:sysctl:vfs.nfs4]]
  * [[doc:s:sysctl:vfs.nfsrv]]
  * [[doc:s:sysctl:vfs.pfs]]
  * [[doc:s:sysctl:vfs.ufs]]
  * [[doc:s:sysctl:vfs.zfs]]