git: kernel - Fix NFS server deadlock
dillon at crater.dragonflybsd.org
Mon Sep 27 08:21:07 PDT 2010
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date: Mon Sep 27 08:15:31 2010 -0700
kernel - Fix NFS server deadlock
* _cache_cleanneg() was calling cache_zap() with the non-blocking argument
set to FALSE, causing numerous out-of-order locking situations which
could march up the topology and cause a deadlock.
Fixed by calling cache_zap() with the non-blocking argument set to TRUE.
* This was particularly obvious when running a buildworld with a loopback
NFS mount for /usr/obj, which generates lots of negative cache activity,
but theoretically could cause deadlocks even without using NFS.
Reported-by: YONETANI Tomokazu <qhwt.dfly at les.ath.cx>
Summary of changes:
sys/kern/vfs_cache.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
DragonFly BSD source repository
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