cvs commit: src/sys/ufs/ffs ffs_softdep.c

[Jeff Roberson]

jeff        2005-01-24 10:18:31 UTC

  FreeBSD src repository

  Modified files:
    sys/ufs/ffs          ffs_softdep.c 
  Log:
   - Convert the global LK lock to a mutex.
   - Expand the scope of lk to cover not only interrupt races, but also
     top-half races, which includes many new uses over global top-half
     only data.
   - Get rid of interlocked_sleep() and use msleep or BUF_LOCK where
     appropriate.
   - Use the lk mutex in place of the various hand rolled semaphores.
   - Stop dropping the lk lock before we panic.
   - Fix getdirtybuf() callers so that they reacquire access to whatever
     softdep datastructure they were inxpecting in the failure/retry
     case.  Previously, sleeps in getdirtybuf() could leave us with
     pointers to bad memory.
   - Update handling of ffs to be compatible with ffs locking changes.
  
  Sponsored By:   Isilon Systems, Inc.
  
  Revision  Changes    Path
  1.166     +455 -739  src/sys/ufs/ffs/ffs_softdep.c