tree 6b207a5296063e1a773f36fb724402ea7cbab7eb
parent 7fbb36451a91de6e8f9ece4f1f1ee9bd8ebf838a
author Oleg Nesterov <oleg@tv-sign.ru> 1158118555 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1158157934 -0700

[PATCH] rcu_do_batch: make ->qlen decrement irq safe

rcu_do_batch() decrements rdp->qlen with irqs enabled.  This is not good,
it can also be modified by call_rcu() from interrupt.

Decrement ->qlen once with irqs disabled, after a main loop.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Dipankar Sarma <dipankar@in.ibm.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>