[Cluster-devel] [PATCH] GFS2: kernel changes to support new gfs2_grow command (Try 3)

[David Teigland]

On Fri, May 04, 2007 at 04:48:24PM -0500, Robert Peterson wrote:
> David Teigland wrote:
> >On Wed, May 02, 2007 at 08:57:08PM -0500, Robert Peterson wrote:
> >>@@ -978,18 +1038,25 @@ int gfs2_inplace_reserve_i(struct gfs2_inode *ip, 
> >
> >>-	error = gfs2_rindex_hold(sdp, &al->al_ri_gh);
> >>+	/* We need to hold the rindex unless the inode we're using is
> >>+	   the rindex itself, in which case it's already held. */
> >>+	if (ip != GFS2_I(sdp->sd_rindex))
> >>+		error = gfs2_rindex_hold(sdp, &al->al_ri_gh);
> >>+	else if (!sdp->sd_rgrps) /* We may not have the rindex read in, so: 
> >>*/
> >>+		error = gfs2_check_rindex_version(sdp);
> >>+
> >
> >I don't see why we need this change, the original looks correct.
> 
> If we're updating through the meta_fs, the rindex file will already be
> glocked and held through its inode.

You don't have to worry about other holders or the state of the glock,
just let gfs_rindex_hold() enqueue its own shared holder and everything
should work fine.