K 10
svn:author
V 8
mckusick
K 8
svn:date
V 27
2011-09-28T19:38:47.736880Z
K 7
svn:log
V 588
MFC r225807:
This update eliminates a lock-order reversal warning discovered
whle tracking down the system hang reported in kern/160662 and
corrected in revision 225806 (MFC'ed as 225850). The LOR is not
the cause of the system hang and indeed cannot cause an actual
deadlock. However, it can be easily eliminated by defering the
acquisition of a buflock until after all the vnode locks have
been acquired.

As journaled soft updates first appeared in 9.0, this will be the
only MFC of this change.

Approved by:     re (kib)
Reported by:     Hans Ottevanger
PR:              kern/160662

END