cvs commit: src/sys/kern vfs_syscalls.c

[Don Lewis]

truckman    2003/06/18 21:10:56 PDT

  FreeBSD src repository

  Modified files:
    sys/kern             vfs_syscalls.c 
  Log:
  FILE_LOCK() uses a pool mutex, as does the vnode v_vnlock.  Since pool
  mutexes are supposed to only be used as leaf mutexes, and what appear
  to be separate pool mutexes could be aliased together, it is bad idea
  for a thread to attempt to hold two pool mutexes at the same time.
  
  Slightly rearrange the code in kern_open() so that FILE_UNLOCK() is
  called before calling VOP_GETVOBJECT(), which will grab the v_vnlock
  mutex.
  
  Revision  Changes    Path
  1.320     +5 -5      src/sys/kern/vfs_syscalls.c