K 10
svn:author
V 6
dillon
K 8
svn:date
V 27
2001-12-25T01:44:45.000000Z
K 7
svn:log
V 967
MFC the following:

    * LK_TIMEOUT lock flag to separate lock acquisition with and without
      a timeout (dillon)

    * use of LK_TIMEOUT in BUF_TIMELOCK to avoid timeout race aginst
      BUF_LOCK (dillon)

    * use of LK_TIMEOUT in pageout vget() code to avoid deadlock (dillon)

    * move vnode reclaim into its own kthread to avoid deadlocks (Yahoo)

    * remove 'VXLOCK interlock avoided' messages.. they can occur
      under normal operation and create a choking hazzard on the console.

    * Adjust VMIGHTFREE macro used with vnode reclaim code to avoid
      eating large amounts of cpu with little to show for it in certain
      situations.

    * Add VREF/VRELE around UFS_UPDATE() call to avoid update/reclaim
      race (note: snuck in at last minute but I accidently did a partial
      commit a moment ago and the tree is broken until I commit the rest
      of it).  This is minor and will be tested heavily.

Approved by:	Release Engineers

END