If we are in an interrupt context then simply defer the free via a workqueue. Removing a virtual mappping *must* be done with interrupts enabled since tlb_xx functions are called that rely on interrupts for processor to processor communications. Signed-off-by: Christoph Lameter --- mm/page_alloc.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) Index: linux-2.6/mm/page_alloc.c =================================================================== --- linux-2.6.orig/mm/page_alloc.c 2007-10-03 20:00:37.000000000 -0700 +++ linux-2.6/mm/page_alloc.c 2007-10-03 20:01:09.000000000 -0700 @@ -294,10 +294,20 @@ static void __free_vcompound(void *addr) kfree(pages); } +static void vcompound_free_work(struct work_struct *w) +{ + __free_vcompound((void *)w); +} static void free_vcompound(void *addr) { - __free_vcompound(addr); + struct work_struct *w = addr; + + if (irqs_disabled() || in_interrupt()) { + INIT_WORK(w, vcompound_free_work); + schedule_work(w); + } else + __free_vcompound(w); } static void free_compound_page(struct page *page) -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/