---

yaml --- r: 160979 b: refs/heads/master c: 7929eb9 h: refs/heads/master i: 160977: 8463640 160975: f494cd3 v: v3
git-mirror · Sep 4, 2009 · 9f7bb65 · 9f7bb65
1 parent dc9955b
commit 9f7bb65
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c47a830c08a26a7c210ae16a0ffe3f56ba86ea69
+refs/heads/master: 7929eb9cf643ae416e5081b2a6fa558d37b9854c
diff --git a/trunk/arch/arm/mm/highmem.c b/trunk/arch/arm/mm/highmem.c
@@ -40,11 +40,16 @@ void *kmap_atomic(struct page *page, enum km_type type)
 {
 	unsigned int idx;
 	unsigned long vaddr;
+	void *kmap;
 
 	pagefault_disable();
 	if (!PageHighMem(page))
 		return page_address(page);
 
+	kmap = kmap_high_get(page);
+	if (kmap)
+		return kmap;
+
 	idx = type + KM_TYPE_NR * smp_processor_id();
 	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
 #ifdef CONFIG_DEBUG_HIGHMEM
@@ -80,6 +85,9 @@ void kunmap_atomic(void *kvaddr, enum km_type type)
 #else
 		(void) idx;  /* to kill a warning */
 #endif
+	} else if (vaddr >= PKMAP_ADDR(0) && vaddr < PKMAP_ADDR(LAST_PKMAP)) {
+		/* this address was obtained through kmap_high_get() */
+		kunmap_high(pte_page(pkmap_page_table[PKMAP_NR(vaddr)]));
 	}
 	pagefault_enable();
 }