On Tue, Oct 19, 2010 at 06:12:07PM +0200, Miklos Szeredi wrote:
quoted text
> On Tue, 19 Oct 2010, npiggin@kernel.d wrote:
> > @@ -422,7 +422,11 @@
> >  			/*
> >  			 * The inode is clean
> >  			 */
> > -			list_move(&inode->i_list, &inode_unused);
> > +			list_del_init(&inode->i_io);
> > +			if (list_empty(&inode->i_lru)) {
> > +				list_add(&inode->i_lru, &inode_unused);
> > +				inodes_stat.nr_unused++;
> 
> It's not obvious where this came from.  How come nr_unused was
> correctly accounted with the previous, list_move() version?

Yes... inode is considered unused if it has 0 refcount, even if
it is dirty. This hunk must have crept in from somewhere else,
good catch.

Thanks,
Nick

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