1 files changed, 8 insertions, 0 deletions

diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c
index df5ac294c379..917b2f32f260 100644
--- a/arch/sh/kernel/sys_sh.c
+++ b/arch/sh/kernel/sys_sh.c
@@ -79,6 +79,10 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
                     (!vma || addr + len <= vma->vm_start))
                         return addr;
         }
+        if (len <= mm->cached_hole_size) {
+                mm->cached_hole_size = 0;
+                mm->free_area_cache = TASK_UNMAPPED_BASE;
+        }
         if (flags & MAP_PRIVATE)
                 addr = PAGE_ALIGN(mm->free_area_cache);
         else
@@ -95,6 +99,7 @@ full_search:
                          */
                         if (start_addr != TASK_UNMAPPED_BASE) {
                                 start_addr = addr = TASK_UNMAPPED_BASE;
+                                mm->cached_hole_size = 0;
                                 goto full_search;
                         }
                         return -ENOMEM;
@@ -106,6 +111,9 @@ full_search:
                         mm->free_area_cache = addr + len;
                         return addr;
                 }
+                if (addr + mm->cached_hole_size < vma->vm_start)
+                        mm->cached_hole_size = vma->vm_start - addr;
+
                 addr = vma->vm_end;
                 if (!(flags & MAP_PRIVATE))
                         addr = COLOUR_ALIGN(addr);