From: Miklos Szeredi <mszeredi@suse.cz>
Date: Mon, 21 Nov 2011 11:11:32 +0000 (+0100)
Subject: vfs: count unlinked inodes
X-Git-Tag: v3.3-rc1~170^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7ada4db88634429f4da690ad1c4eb73c93085f0c;p=pandora-kernel.git

vfs: count unlinked inodes

Add a new counter to the superblock that keeps track of unlinked but
not yet deleted inodes.

Do not WARN_ON if set_nlink is called with zero count, just do a
ratelimited printk.  This happens on xfs and probably other
filesystems after an unclean shutdown when the filesystem reads inodes
which already have zero i_nlink.  Reported by Christoph Hellwig.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Tested-by: Toshiyuki Okajima <toshi.okajima@jp.fujitsu.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

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