git: kernel - Refactor lockmgr() (2)
dillon at crater.dragonflybsd.org
Tue Oct 31 10:49:59 PDT 2017
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date: Fri Oct 27 18:55:43 2017 -0700
kernel - Refactor lockmgr() (2)
* Remove the global vfs_spin() lock and single vnode_active_list
and single vnode_inactive_list.
* Replace with a pcpu array of spinlocks and lists. However, for
this initial push the array is simply hashed based on the vnode
pointer, so it isn't really being acted on pcpu.
* Significantly reduces numerous bottlenecks when vnodes start to get
recycled by vnlru(). Cache line bounces are still a problem,
but direct spinlock conflicts are essentially gone.
Summary of changes:
sys/kern/vfs_lock.c | 187 +++++++++++++++++++++++++++++++++-------------------
1 file changed, 118 insertions(+), 69 deletions(-)
DragonFly BSD source repository
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