commit 899eb297501681913674633aa0823adb6809437c
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Tue Jul 14 00:14:12 2009 -0700
HAMMER - new hammer_lock code, fix mplock bug in last commit, mpsafe getattr.
* Fix a mplock bug in the last commit that can cause a panic in hammer_read.
The mplock check code wasn't setting up the hammer transaction properly.
* VMP_GETATTR is now set on all HAMMER vnodes. If sysctl vfs.getattr_mpsafe=1
all fstat() operations will run without the MP lock.
* Rewrite HAMMER's lock code, making it MPSAFE. The new lock code uses
atomic_cmpset_int().
Summary of changes:
sys/vfs/hammer/hammer.h | 23 +++-
sys/vfs/hammer/hammer_inode.c | 3 +-
sys/vfs/hammer/hammer_subs.c | 284 +++++++++++++++++++++++++++--------------
sys/vfs/hammer/hammer_vnops.c | 16 ++-
4 files changed, 222 insertions(+), 104 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/899eb297501681913674633aa0823adb6809437c
--
DragonFly BSD source repository