pnfs-obj: objlayout_encode_layoutcommit implementation
* Define API for io-engines to report delta_space_used in IOs
* Encode the osd-layout specific information of the layoutcommit
XDR buffer.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c
index f7caecff..dc3956c 100644
--- a/fs/nfs/objlayout/objlayout.c
+++ b/fs/nfs/objlayout/objlayout.c
@@ -225,6 +225,7 @@
struct objlayout *objlay = OBJLAYOUT(state->lseg->pls_layout);
spin_lock(&objlay->lock);
+ objlay->delta_space_valid = OBJ_DSU_INVALID;
list_add(&objlay->err_list, &state->err_list);
spin_unlock(&objlay->lock);
}
@@ -433,6 +434,35 @@
return PNFS_ATTEMPTED;
}
+void
+objlayout_encode_layoutcommit(struct pnfs_layout_hdr *pnfslay,
+ struct xdr_stream *xdr,
+ const struct nfs4_layoutcommit_args *args)
+{
+ struct objlayout *objlay = OBJLAYOUT(pnfslay);
+ struct pnfs_osd_layoutupdate lou;
+ __be32 *start;
+
+ dprintk("%s: Begin\n", __func__);
+
+ spin_lock(&objlay->lock);
+ lou.dsu_valid = (objlay->delta_space_valid == OBJ_DSU_VALID);
+ lou.dsu_delta = objlay->delta_space_used;
+ objlay->delta_space_used = 0;
+ objlay->delta_space_valid = OBJ_DSU_INIT;
+ lou.olu_ioerr_flag = !list_empty(&objlay->err_list);
+ spin_unlock(&objlay->lock);
+
+ start = xdr_reserve_space(xdr, 4);
+
+ BUG_ON(pnfs_osd_xdr_encode_layoutupdate(xdr, &lou));
+
+ *start = cpu_to_be32((xdr->p - start - 1) * 4);
+
+ dprintk("%s: Return delta_space_used %lld err %d\n", __func__,
+ lou.dsu_delta, lou.olu_ioerr_flag);
+}
+
static int
err_prio(u32 oer_errno)
{