X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=inline;f=fs%2Framfs%2Ffile-nommu.c;fp=fs%2Framfs%2Ffile-nommu.c;h=677139b48e000d0d98100122c851eff5572aa14a;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=f443a84b98a5a300b21fbf298f7aa2587e6e83eb;hpb=4e76c8a9fa413ccc09d3f7f664183dcce3555d57;p=linux-2.6.git

diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index f443a84b9..677139b48 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -27,7 +27,7 @@
 
 static int ramfs_nommu_setattr(struct dentry *, struct iattr *);
 
-struct address_space_operations ramfs_aops = {
+const struct address_space_operations ramfs_aops = {
 	.readpage		= simple_readpage,
 	.prepare_write		= simple_prepare_write,
 	.commit_write		= simple_commit_write
@@ -283,9 +283,9 @@ unsigned long ramfs_nommu_get_unmapped_area(struct file *file,
 
 /*****************************************************************************/
 /*
- * set up a mapping
+ * set up a mapping for shared memory segments
  */
 int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma)
 {
-	return 0;
+	return vma->vm_flags & VM_SHARED ? 0 : -ENOSYS;
 }