1 files changed, 12 insertions, 4 deletions

diff --git a/arch/blackfin/include/asm/mmu_context.h b/arch/blackfin/include/asm/mmu_context.h
index ae8ef4ffd806..e1a9b4624f91 100644
--- a/arch/blackfin/include/asm/mmu_context.h
+++ b/arch/blackfin/include/asm/mmu_context.h
@@ -7,12 +7,13 @@
 #ifndef __BLACKFIN_MMU_CONTEXT_H__
 #define __BLACKFIN_MMU_CONTEXT_H__
 
-#include <linux/gfp.h>
+#include <linux/slab.h>
 #include <linux/sched.h>
 #include <asm/setup.h>
 #include <asm/page.h>
 #include <asm/pgalloc.h>
 #include <asm/cplbinit.h>
+#include <asm/sections.h>
 
 /* Note: L1 stacks are CPU-private things, so we bluntly disable this
    feature in SMP mode, and use the per-CPU scratch SRAM bank only to
@@ -117,9 +118,16 @@ static inline void protect_page(struct mm_struct *mm, unsigned long addr,
                                 unsigned long flags)
 {
         unsigned long *mask = mm->context.page_rwx_mask;
-        unsigned long page = addr >> 12;
-        unsigned long idx = page >> 5;
-        unsigned long bit = 1 << (page & 31);
+        unsigned long page;
+        unsigned long idx;
+        unsigned long bit;
+
+        if (unlikely(addr >= ASYNC_BANK0_BASE && addr < ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE))
+                page = (addr - (ASYNC_BANK0_BASE - _ramend)) >> 12;
+        else
+                page = addr >> 12;
+        idx = page >> 5;
+        bit = 1 << (page & 31);
 
         if (flags & VM_READ)
                 mask[idx] |= bit;