K 10
svn:author
V 7
rwatson
K 8
svn:date
V 27
2009-08-28T20:07:38.373026Z
K 7
svn:log
V 557
Merge r196482 from head to stable/8:

  Rather than using IFNET_RLOCK() when iterating over (and modifying) the
  ifnet list during if_ef load, directly acquire the ifnet_sxlock
  exclusively.  That way when if_alloc() recurses the lock, it's a write
  recursion rather than a read->write recursion.

  This code structure is arguably a bug, so add a comment indicating that
  this is the case.  Post-8.0, we should fix this, but this commit
  resolves panic-on-load for if_ef.

  Discussed with:       bz, julian
  Reported by:  phk

Approved by:	re (kib)

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