mm: shift VM_GROWS* check from mmap_region() to do_mmap_pgoff()

[pandora-kernel.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index f5762ea..76cabd2 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1049,6 +1049,8 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
 
                        if (!file->f_op || !file->f_op->mmap)
                                return -ENODEV;
+                       if (vm_flags & (VM_GROWSDOWN|VM_GROWSUP))
+                               return -EINVAL;
                        break;
 
                default:
@@ -1057,6 +1059,8 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
        } else {
                switch (flags & MAP_TYPE) {
                case MAP_SHARED:
+                       if (vm_flags & (VM_GROWSDOWN|VM_GROWSUP))
+                               return -EINVAL;
                        /*
                         * Ignore pgoff.
                         */
@@ -1271,11 +1275,7 @@ munmap_back:
        vma->vm_pgoff = pgoff;
        INIT_LIST_HEAD(&vma->anon_vma_chain);
 
-       error = -EINVAL;        /* when rejecting VM_GROWSDOWN|VM_GROWSUP */
-
        if (file) {
-               if (vm_flags & (VM_GROWSDOWN|VM_GROWSUP))
-                       goto free_vma;
                if (vm_flags & VM_DENYWRITE) {
                        error = deny_write_access(file);
                        if (error)