2.6.22-stable review patch. If anyone has any objections, please let us
know.
------------------
From: Christoph Lameter <[EMAIL PROTECTED]>
patch 421d99193537a6522aac2148286f08792167d5fd in mainline.
This ensures that the quicklists are drained. Otherwise draining may only
occur when the processor reaches an idle state.
Fixes fatal leakage of pgd_t's on 2.6.22 and later.
Signed-off-by: Christoph Lameter <[EMAIL PROTECTED]>
Reported-by: Dhaval Giani <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
include/asm-generic/tlb.h | 4 ++++
1 file changed, 4 insertions(+)
--- a/include/asm-generic/tlb.h
+++ b/include/asm-generic/tlb.h
@@ -14,6 +14,7 @@
#define _ASM_GENERIC__TLB_H
#include <linux/swap.h>
+#include <linux/quicklist.h>
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
@@ -85,6 +86,9 @@ tlb_flush_mmu(struct mmu_gather *tlb, un
static inline void
tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
{
+#ifdef CONFIG_QUICKLIST
+ tlb->need_flush += &__get_cpu_var(quicklist)[0].nr_pages != 0;
+#endif
tlb_flush_mmu(tlb, start, end);
/* keep the page table cache within bounds */
--
--
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