git: DragonFly_RELEASE_3_2 kernel - Fix improper assertion panic in vinvalbuf()
dillon at crater.dragonflybsd.org
Thu Dec 13 19:17:33 PST 2012
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date: Sat Dec 8 14:22:15 2012 -0800
kernel - Fix improper assertion panic in vinvalbuf()
* Related to the removal of vhold/vdrop from buffer cache buffers, the
state of a vnode being cleaned can now contain more active buffers and
I/O's at the time of the vinvalbuf() call.
* Remove the 'vinvalbuf: dirty bufs' assertion and panic. It is no longer
a correct assertion. Note that we've also had sporatic reports of this
panic even prior to the work so it might not have been a completely
correct assertion before either.
* Rework the vinvalbuf buffer-flushing and I/O-waiting code a bit. We
have to wait for I/O at least once and it is probably a good idea to
wait for I/O after each buffer flush pass too, to avoid live-locks.
Summary of changes:
sys/kern/vfs_subr.c | 43 ++++++++++++++++++++++++-------------------
1 files changed, 24 insertions(+), 19 deletions(-)
DragonFly BSD source repository
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