cvs commit: src/sys/kern vfs_lookup.c

[Jeff Roberson]

jeff        2006-04-28 00:59:48 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             vfs_lookup.c 
  Log:
   - Consistently track ni_dvp and ni_vp with dvfslocked and vfslocked rather
     than trying to optimize it into a single lock.  This adds more calls to
     lock giant with non smpsafe filesystems but is the only way to reliably
     hold the correct lock.
   - Remove an invalid assert in the mountedhere case in lookup and fix the
     code to properly deal with the scenario.  We can actually have a lookup
     that returns dp == dvp with mountedhere set with certain unmount races.
  
  Tested by:      kris
  Reported by:    kris/mohans
  
  Revision  Changes    Path
  1.90      +15 -13    src/sys/kern/vfs_lookup.c