From b960d6c43a63ebd2d8518b328da3816b833ee8cc Mon Sep 17 00:00:00 2001 From: Stefano Stabellini Date: Tue, 27 Mar 2012 14:52:44 +0100 Subject: [PATCH] xen/p2m: m2p_find_override: use list_for_each_entry_safe Use list_for_each_entry_safe and remove the spin_lock acquisition in m2p_find_override. Signed-off-by: Stefano Stabellini Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/p2m.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 1b267e75158d..7ed8cc3434c5 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -809,21 +809,17 @@ struct page *m2p_find_override(unsigned long mfn) { unsigned long flags; struct list_head *bucket = &m2p_overrides[mfn_hash(mfn)]; - struct page *p, *ret; + struct page *p, *t, *ret; ret = NULL; - spin_lock_irqsave(&m2p_override_lock, flags); - - list_for_each_entry(p, bucket, lru) { + list_for_each_entry_safe(p, t, bucket, lru) { if (page_private(p) == mfn) { ret = p; break; } } - spin_unlock_irqrestore(&m2p_override_lock, flags); - return ret; } -- 2.20.1