ocfs2: implement i_op->permission

Implement .permission() in ocfs2_file_iops, ocfs2_special_file_iops and
ocfs2_dir_iops.

This helps us avoid some multi-node races with mode change and vfs
operations.

Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/ocfs2/file.h b/fs/ocfs2/file.h
index 475ed8aee8b..601a453f18a 100644
--- a/fs/ocfs2/file.h
+++ b/fs/ocfs2/file.h
@@ -48,6 +48,8 @@ int ocfs2_do_extend_allocation(struct ocfs2_super *osb,
 int ocfs2_setattr(struct dentry *dentry, struct iattr *attr);
 int ocfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
                   struct kstat *stat);
+int ocfs2_permission(struct inode *inode, int mask,
+                     struct nameidata *nd);
 
 int ocfs2_set_inode_size(handle_t *handle,
                          struct inode *inode,