[PATCH 4/5] xfs: use xfs_ilock_map_shared in xfs_attr_get

[Dave Chinner]

On Thu, Dec 05, 2013 at 01:01:59PM -0800, Christoph Hellwig wrote:
> On Fri, Dec 06, 2013 at 07:59:10AM +1100, Dave Chinner wrote:
> > I think the locking here should be moved inside xfs_attr_get_int()
> 
> Or we could just kill xfs_attr_get_int..
> 
> > so that it uses the same locking pattern as xfs_attr_set() and
> > xfs_attr_remove().
> > 
> > Also, xfs_attr_list() needs this treatment (the attr version of
> > readdir) as well (and it has the locking inside xfs_attr_list_int(),
> > too ;).
> >
> > It looks like xfs_readlink needs fixing, too.
> 
> Haven't really done an in-depth audit, mostly just looking at
> where the asserts kick in..

Right - I just did a scan with cscope on the users of
XFS_ILOCK_SHARED, and those two were the only ones that stuck out
that weren't handled correctly....

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com