drm/radeon: fix page flipping hangs on r300/r400

[mv-sheeva.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index 753f44d17047d80ff1b1cb64e9d53d09fd054cb4..2ec8eb5a9cdd0b4ae2e20471858bd4e09d83af00 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -254,7 +254,15 @@ SYSCALL_DEFINE1(brk, unsigned long, brk)
        down_write(&mm->mmap_sem);
 
 #ifdef CONFIG_COMPAT_BRK
-       min_brk = mm->end_code;
+       /*
+        * CONFIG_COMPAT_BRK can still be overridden by setting
+        * randomize_va_space to 2, which will still cause mm->start_brk
+        * to be arbitrarily shifted
+        */
+       if (mm->start_brk > PAGE_ALIGN(mm->end_data))
+               min_brk = mm->start_brk;
+       else
+               min_brk = mm->end_data;
 #else
        min_brk = mm->start_brk;
 #endif
@@ -589,6 +597,8 @@ again:                      remove_next = 1 + (end > next->vm_end);
                }
        }
 
+       vma_adjust_trans_huge(vma, start, end, adjust_next);
+
        /*
         * When changing only vma->vm_end, we don't really need anon_vma
         * lock. This is a fairly rare case by itself, but the anon_vma