pnfs: support multiple verfs per direct req
Support direct requests that span multiple pnfs data servers by
comparing nfs_pgio_header->verf to a cached verf in pnfs_commit_bucket.
Continue to use dreq->verf if the MDS is used / non-pNFS.
Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index ae63601..9a1396e 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1112,6 +1112,7 @@
struct list_head committing;
struct pnfs_layout_segment *wlseg;
struct pnfs_layout_segment *clseg;
+ struct nfs_writeverf direct_verf;
};
struct pnfs_ds_commit_info {
@@ -1294,6 +1295,7 @@
__u64 mds_offset; /* Filelayout dense stripe */
struct nfs_page_array pages;
struct nfs_client *ds_clp; /* pNFS data server */
+ int ds_idx; /* ds index if ds_clp is set */
};
struct nfs_rw_header {