Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

[safe/jmp/linux-2.6] / mm / highmem.c

diff --git a/mm/highmem.c b/mm/highmem.c
index 33587de..66baa20 100644 (file)
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -220,7 +220,7 @@ EXPORT_SYMBOL(kmap_high);
  * @page: &struct page to pin
  *
  * Returns the page's current virtual memory address, or NULL if no mapping
- * exists.  When and only when a non null address is returned then a
+ * exists.  If and only if a non null address is returned then a
  * matching call to kunmap_high() is necessary.
  *
  * This can be called from any context.
@@ -422,7 +422,7 @@ void __init page_address_init(void)
 
 #endif /* defined(CONFIG_HIGHMEM) && !defined(WANT_PAGE_VIRTUAL) */
 
-#if defined(CONFIG_DEBUG_HIGHMEM) && defined(CONFIG_TRACE_IRQFLAGS_SUPPORT)
+#ifdef CONFIG_DEBUG_HIGHMEM
 
 void debug_kmap_atomic(enum km_type type)
 {
@@ -432,10 +432,15 @@ void debug_kmap_atomic(enum km_type type)
                return;
 
        if (unlikely(in_interrupt())) {
-               if (in_irq()) {
+               if (in_nmi()) {
+                       if (type != KM_NMI && type != KM_NMI_PTE) {
+                               WARN_ON(1);
+                               warn_count--;
+                       }
+               } else if (in_irq()) {
                        if (type != KM_IRQ0 && type != KM_IRQ1 &&
                            type != KM_BIO_SRC_IRQ && type != KM_BIO_DST_IRQ &&
-                           type != KM_BOUNCE_READ) {
+                           type != KM_BOUNCE_READ && type != KM_IRQ_PTE) {
                                WARN_ON(1);
                                warn_count--;
                        }
@@ -452,7 +457,9 @@ void debug_kmap_atomic(enum km_type type)
        }
 
        if (type == KM_IRQ0 || type == KM_IRQ1 || type == KM_BOUNCE_READ ||
-                       type == KM_BIO_SRC_IRQ || type == KM_BIO_DST_IRQ) {
+                       type == KM_BIO_SRC_IRQ || type == KM_BIO_DST_IRQ ||
+                       type == KM_IRQ_PTE || type == KM_NMI ||
+                       type == KM_NMI_PTE ) {
                if (!irqs_disabled()) {
                        WARN_ON(1);
                        warn_count--;