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



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.

So there are the two distinct parts to the fs-grow procedure.  The first
is writing to the rindex and statfs files -- this is what was missing in
gfs2, and I'm ignoring that part for now.

The second part is gfs detecting that a grow took place and updating its
list of rg's.  I don't think this part needs any changing at all, it
should work the same way it always has -- this is what I'm focussing on.

I'll re-test test the original code path to make sure that this part of
the fix is still really necessary.

Regards,

Bob Peterson
Red Hat Cluster Suite


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