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(parent: 53a7706) | patch
mempolicy: remove tasklist_lock from migrate_pages
authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Thu, 13 Jan 2011 23:46:14 +0000 (15:46 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 14 Jan 2011 01:32:36 +0000 (17:32 -0800)
commit1e50df39f6e2c3a4a3394df62baa8a213df16c54
treed437981aec4fc5cf84178f7afcca83f0ef40aea1tree | snapshot
parent53a7706d5ed8f1a53ba062b318773160cc476ddecommit | diff
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>
mm/mempolicy.c diff | blob | history
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