[PATCH 08/12] SQUASHME: objio alloc/free lseg Bugs fixes

[Boaz Harrosh <bharrosh@panasas.com>]

Wrong allocation and pointering in lseg_alloc.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
---
 fs/nfs/objlayout/objio_osd.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c
index a4201d8..167cd1e 100644
--- a/fs/nfs/objlayout/objio_osd.c
+++ b/fs/nfs/objlayout/objio_osd.c
@@ -117,7 +117,7 @@ struct objio_segment {
 	unsigned comps_index;
 	unsigned num_comps;
 	/* variable length */
-	struct objio_dev_ent *ods[1];
+	struct objio_dev_ent *ods[0];
 };
 
 static inline struct objio_segment *
@@ -278,7 +278,6 @@ extern int objio_alloc_lseg(struct pnfs_layout_segment **outp,
 	struct pnfs_osd_layout layout;
 	struct pnfs_osd_object_cred *cur_comp, src_comp;
 	struct caps_buffers *caps_p;
-
 	int err;
 
 	err = pnfs_osd_xdr_decode_layout_map(&layout, &iter, xdr);
@@ -289,14 +288,16 @@ extern int objio_alloc_lseg(struct pnfs_layout_segment **outp,
 	if (unlikely(err))
 		return err;
 
-	objio_seg = kzalloc(sizeof(*objio_seg) +
+	objio_seg = kzalloc(sizeof(*objio_seg) + 
+			    sizeof(objio_seg->ods[0]) * layout.olo_num_comps +
 			    sizeof(*objio_seg->comps) * layout.olo_num_comps +
 			    sizeof(struct caps_buffers) * layout.olo_num_comps,
 			    gfp_flags);
 	if (!objio_seg)
 		return -ENOMEM;
 
-	cur_comp = objio_seg->comps = (void *)(objio_seg + 1);
+	objio_seg->comps = (void *)(objio_seg->ods + layout.olo_num_comps);
+	cur_comp = objio_seg->comps;
 	caps_p = (void *)(cur_comp + layout.olo_num_comps);
 	while (pnfs_osd_xdr_decode_layout_comp(&src_comp, &iter, xdr, &err))
 		copy_single_comp(cur_comp++, &src_comp, caps_p++);
-- 
1.7.2.3