tree c85f2b2acac9bf9b88e0c19d90d252b1780e0d35
parent 017f2b239dabb2740b91df162e004371b861f371
author Lai Jiangshan <laijs@cn.fujitsu.com> 1292925314 +0800
committer Steven Rostedt <rostedt@goodmis.org> 1299874406 -0500

plist: Shrink struct plist_head

struct plist_head is used in struct task_struct as well as struct
rtmutex. If we can make it smaller, it will also make these structures
smaller as well.

The field prio_list in struct plist_head is seldom used and we can get
its information from the plist_nodes. Removing this field will decrease
the size of plist_head by half.

Signed-off-by:  Lai Jiangshan <laijs@cn.fujitsu.com>
LKML-Reference: <4D107982.9090700@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>