[PATCH] procfs: Fix hardlink counts

[Daniel Drake]

The pid directories in /proc/ currently return the wrong hardlink count - 3, 
when there are actually 4 : ".", "..", "fd", and "task".

This is easy to notice using find(1):
	cd /proc/<pid>
	find

In the output, you'll see a message similar to:
find: WARNING: Hard link count is wrong for .: this may be a bug in your 
filesystem driver.  Automatically turning on find's -noleaf option.  Earlier 
results may have failed to include directories that should have been searched.

http://bugs.gentoo.org/show_bug.cgi?id=86031

I also noticed that CONFIG_SECURITY can add a 5th: attr, and performed a 
similar fix on the task directories too.

Signed-off-by: Daniel Drake <dsd@xxxxxxxxxx>

--- linux-2.6.11-gentoo-r5/fs/proc/base.c.orig	2005-04-01 14:06:43.000000000 +0100
+++ linux-2.6.11-gentoo-r5/fs/proc/base.c	2005-04-01 14:35:39.000000000 +0100
@@ -1702,8 +1702,12 @@ struct dentry *proc_pid_lookup(struct in
 	inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
 	inode->i_op = &proc_tgid_base_inode_operations;
 	inode->i_fop = &proc_tgid_base_operations;
-	inode->i_nlink = 3;
 	inode->i_flags|=S_IMMUTABLE;
+#ifdef CONFIG_SECURITY
+	inode->i_nlink = 5;
+#else
+	inode->i_nlink = 4;
+#endif
 
 	dentry->d_op = &pid_base_dentry_operations;
 
@@ -1757,8 +1761,12 @@ static struct dentry *proc_task_lookup(s
 	inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
 	inode->i_op = &proc_tid_base_inode_operations;
 	inode->i_fop = &proc_tid_base_operations;
-	inode->i_nlink = 3;
 	inode->i_flags|=S_IMMUTABLE;
+#ifdef CONFIG_SECURITY
+	inode->i_nlink = 4;
+#else
+	inode->i_nlink = 3;
+#endif
 
 	dentry->d_op = &pid_base_dentry_operations;