tree d437981aec4fc5cf84178f7afcca83f0ef40aea1
parent 53a7706d5ed8f1a53ba062b318773160cc476dde
author KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> 1294962374 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1294968756 -0800

mempolicy: remove tasklist_lock from migrate_pages

Today, tasklist_lock in migrate_pages doesn't protect anything.
rcu_read_lock() provide enough protection from pid hash walk.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reported-by: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>