Andrea Righi cfbc6a9221 staging: zcache: avoid AB-BA deadlock condition ... Commit 9256a47 fixed a deadlock condition, being sure that the buddy list spinlock is always taken before the page spinlock. However in zbud_free_and_delist() locking order is the opposite (page lock -> list lock). Possible unsafe locking scenario (reported by lockdep): CPU0 CPU1 ---- ---- lock(&(&zbpg->lock)->rlock); lock(zbud_budlists_spinlock); lock(&(&zbpg->lock)->rlock); lock(zbud_budlists_spinlock); Fix by grabbing the locks in opposite order in zbud_free_and_delist(). Signed-off-by: Andrea Righi <andrea@betterlinux.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-02-24 11:59:59 -08:00
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Kconfig	staging: fix powerpc linux-next break on zsmalloc	2012-02-13 06:57:17 -08:00
Makefile	staging: fix zcache building	2011-08-02 16:06:18 -07:00
tmem.c	Staging: zcache: signedness bug in tmem_get()	2011-08-23 14:52:20 -07:00
tmem.h	staging: zcache: support multiple clients, prep for KVM and RAMster	2011-07-08 14:18:53 -07:00
zcache-main.c	staging: zcache: avoid AB-BA deadlock condition	2012-02-24 11:59:59 -08:00