[git pull] core fixes

Ingo Molnar
2009-01-13T01:16:41Z

Linus,

Please pull the latest core-fixes-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git core-fixes-for-linus

Thanks,

Ingo

------------------>
Ingo Molnar (1):
smp_call_function_single(): be slightly less stupid, fix #2

Peter Zijlstra (1):
lockdep, mm: fix might_fault() annotation

kernel/up.c | 1 +
mm/memory.c | 9 +++++++++
2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/kernel/up.c b/kernel/up.c
index c04b9dc..1ff27a2 100644
--- a/kernel/up.c
+++ b/kernel/up.c
@@ -2,6 +2,7 @@
* Uniprocessor-only support functions. The counterpart to kernel/smp.c
*/

+#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/smp.h>
diff --git a/mm/memory.c b/mm/memory.c
index e009ce8..c2d4c47 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3165,6 +3165,15 @@ void print_vma_addr(char *prefix, unsigned long ip)
#ifdef CONFIG_PROVE_LOCKING
void might_fault(void)
{
+ /*
+ * Some code (nfs/sunrpc) uses socket ops on kernel memory while
+ * holding the mmap_sem, this is safe because kernel memory doesn't
+ * get paged out, therefore we'll never actually fault, and the
+ * below annotations will generate false positives.
+ */
+ if (segment_eq(get_fs(), KERNEL_DS))
+ return;
+
might_sleep();
/*
* it would be nicer only to annotate paths which are not under