[GFS2] Fixes to scanning of glocks (again)

This really is the correct fix this time. We just ignore all
glocks associated with inodes until the inodes are pushed
from the inode cache. At that point the glocks are queued for
reclaim, so we don't need to do it here.

Also fix one or two other minor bugs.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 6499c4f..f4c4839 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -325,6 +325,7 @@
 	uint32_t nlink;
 	int error;
 
+	BUG_ON(ip->i_di.di_nlink != ip->i_inode.i_nlink);
 	nlink = ip->i_di.di_nlink + diff;
 
 	/* If we are reducing the nlink count, but the new value ends up being
@@ -341,6 +342,7 @@
 
 	ip->i_di.di_nlink = nlink;
 	ip->i_di.di_ctime = get_seconds();
+	ip->i_inode.i_nlink = nlink;
 
 	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
 	gfs2_dinode_out(&ip->i_di, dibh->b_data);