mm: allow drivers to prevent new writable mappings

[pandora-kernel.git] / fs / inode.c

diff --git a/fs/inode.c b/fs/inode.c
index d62cb51..6953cd5 100644 (file)
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -174,6 +174,7 @@ int inode_init_always(struct super_block *sb, struct inode *inode)
        mapping->a_ops = &empty_aops;
        mapping->host = inode;
        mapping->flags = 0;
+       atomic_set(&mapping->i_mmap_writable, 0);
        mapping_set_gfp_mask(mapping, GFP_HIGHUSER_MOVABLE);
        mapping->assoc_mapping = NULL;
        mapping->backing_dev_info = &default_backing_dev_info;