From: Daniel Drake <dsd@gentoo.org>

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@gentoo.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 25-akpm/fs/proc/base.c |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diff -puN fs/proc/base.c~procfs-fix-hardlink-counts fs/proc/base.c
--- 25/fs/proc/base.c~procfs-fix-hardlink-counts	Fri Apr  1 13:33:41 2005
+++ 25-akpm/fs/proc/base.c	Fri Apr  1 13:33:41 2005
@@ -1800,8 +1800,12 @@ 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;
 
@@ -1855,8 +1859,12 @@ 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;
 
_