diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-10 12:03:30 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-10 12:03:30 -0700 |
commit | 1abaf3326bf2a2fabd6a0b6258e9cb33d734050a (patch) | |
tree | dd51de5b7036139c6c17f27cbae8b259bebdeb75 | |
parent | a651d7997978bdecfc9891b05b9ee3dccb42f588 (diff) | |
parent | d0fc63f7bd07cb779a06dc1cdd0c5a14e7f5d562 (diff) |
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86 mmiotrace: fix remove_kmmio_fault_pages()
-rw-r--r-- | arch/x86/mm/kmmio.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/x86/mm/kmmio.c b/arch/x86/mm/kmmio.c index 9f205030d9a..6a518dd08a3 100644 --- a/arch/x86/mm/kmmio.c +++ b/arch/x86/mm/kmmio.c @@ -451,23 +451,24 @@ static void rcu_free_kmmio_fault_pages(struct rcu_head *head) static void remove_kmmio_fault_pages(struct rcu_head *head) { - struct kmmio_delayed_release *dr = container_of( - head, - struct kmmio_delayed_release, - rcu); + struct kmmio_delayed_release *dr = + container_of(head, struct kmmio_delayed_release, rcu); struct kmmio_fault_page *p = dr->release_list; struct kmmio_fault_page **prevp = &dr->release_list; unsigned long flags; + spin_lock_irqsave(&kmmio_lock, flags); while (p) { - if (!p->count) + if (!p->count) { list_del_rcu(&p->list); - else + prevp = &p->release_next; + } else { *prevp = p->release_next; - prevp = &p->release_next; + } p = p->release_next; } spin_unlock_irqrestore(&kmmio_lock, flags); + /* This is the real RCU destroy call. */ call_rcu(&dr->rcu, rcu_free_kmmio_fault_pages); } |