From: Paul Menage <menage@google.com>
Date: Mon, 16 Jul 2007 06:40:11 +0000 (-0700)
Subject: Reduce cpuset.c write_lock_irq() to read_lock()
X-Git-Tag: v2.6.23-rc1~920
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c2aef333c98b41eeb0f0d55b7faa7d4625a6160b;p=pandora-kernel.git

Reduce cpuset.c write_lock_irq() to read_lock()

cpuset.c:update_nodemask() uses a write_lock_irq() on tasklist_lock to
block concurrent forks; a read_lock() suffices and is less intrusive.

Signed-off-by: Paul Menage<menage@google.com>
Acked-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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