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From: Jeff Roberson <jeff@FreeBSD.org>
Date: Tue, 24 Sep 2002 19:22:21 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/kern vfs_subr.c src/sys/sys vnode.h
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jeff        2002/09/24 19:22:21 PDT

  Modified files:
    sys/kern             vfs_subr.c 
    sys/sys              vnode.h 
  Log:
   - Lock down the syncer with sync_mtx.
   - Enable vfs_badlock_mutex by default.
   - Assert that the vp is locked in VOP_UNLOCK.
   - Use standard interlock macros in remaining code.
   - Correct a race in getnewvnode().
   - Lock access to v_numoutput with interlock.
   - Lock access to buf lists and splay tree with interlock.
   - Add VOP and VI asserts.
   - Lock b_vnbufs with the vnode interlock.
   - Add vrefcnt() for callers who want to retreive the vnode ref without
     holding a lock.  Add a comment that describes when this is safe.
   - Add vholdl() and vdropl() so that callers who already own the interlock
     can avoid race conditions and unnecessary unlocking.
   - Move the VOP_GETATTR() in vflush() into the WRITECLOSE conditional case.
   - Hold the interlock before droping the mntlist_mtx in vflush() to avoid
     a race.
   - Fix locking in vfs_msync().
  
  Revision  Changes    Path
  1.406     +188 -74   src/sys/kern/vfs_subr.c
  1.211     +3 -0      src/sys/sys/vnode.h

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