NFS: Drop inode after rename

 When doing a rename on top of an existing file that is not in use,
 the inode of the overwritten file will remain in the icache.

 The fix is to decrement i_nlink of the overwritten inode, like we
 do for unlink, rmdir etc already.

 Problem diagnosed by Olaf Kirch. This patch is a slight variation
 on his fix.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 2df639f..94a7fce 100644 (file)
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1539,7 +1539,8 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 #endif
                        goto out;
                }
-       }
+       } else
+               new_inode->i_nlink--;
 
 go_ahead:
        /*