On Tue, 15 Nov 2011, Yong Zhang wrote:
Subject: slub: move discard_slab out of node lock
Lockdep reports there is potential deadlock for slub node list_lock.
discard_slab() is called with the lock hold in unfreeze_partials(),
which could trigger a slab allocation, which could hold the lock again.
discard_slab() doesn't need hold the lock actually, if the slab is
already removed from partial list.
Reported-and-tested-by: Yong Zhang <yong.zhang0@xxxxxxxxx>
Reported-and-tested-by: Julie Sullivan <kernelmail.jms@xxxxxxxxx>
Signed-off-by: Shaohua Li <shaohua.li@xxxxxxxxx>
Tested-by: Yong Zhang <yong.zhang0@xxxxxxxxx>
Applied, thanks!
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>