1 files changed, 30 insertions, 0 deletions

diff --git a/fs/nfs/objlayout/objlayout.h b/fs/nfs/objlayout/objlayout.h
index b0bb975058e4..a8244c8e042d 100644
--- a/fs/nfs/objlayout/objlayout.h
+++ b/fs/nfs/objlayout/objlayout.h
@@ -51,6 +51,14 @@
 struct objlayout {
         struct pnfs_layout_hdr pnfs_layout;
 
+         /* for layout_commit */
+        enum osd_delta_space_valid_enum {
+                OBJ_DSU_INIT = 0,
+                OBJ_DSU_VALID,
+                OBJ_DSU_INVALID,
+        } delta_space_valid;
+        s64 delta_space_used;  /* consumed by write ops */
+
          /* for layout_return */
         spinlock_t lock;
         struct list_head err_list;
@@ -119,6 +127,23 @@ extern void objlayout_io_set_result(struct objlayout_io_state *state,
                         unsigned index, struct pnfs_osd_objid *pooid,
                         int osd_error, u64 offset, u64 length, bool is_write);
 
+static inline void
+objlayout_add_delta_space_used(struct objlayout_io_state *state, s64 space_used)
+{
+        struct objlayout *objlay = OBJLAYOUT(state->lseg->pls_layout);
+
+        /* If one of the I/Os errored out and the delta_space_used was
+         * invalid we render the complete report as invalid. Protocol mandate
+         * the DSU be accurate or not reported.
+         */
+        spin_lock(&objlay->lock);
+        if (objlay->delta_space_valid != OBJ_DSU_INVALID) {
+                objlay->delta_space_valid = OBJ_DSU_VALID;
+                objlay->delta_space_used += space_used;
+        }
+        spin_unlock(&objlay->lock);
+}
+
 extern void objlayout_read_done(struct objlayout_io_state *state,
                                 ssize_t status, bool sync);
 extern void objlayout_write_done(struct objlayout_io_state *state,
@@ -149,6 +174,11 @@ extern enum pnfs_try_status objlayout_write_pagelist(
         struct nfs_write_data *,
         int how);
 
+extern void objlayout_encode_layoutcommit(
+        struct pnfs_layout_hdr *,
+        struct xdr_stream *,
+        const struct nfs4_layoutcommit_args *);
+
 extern void objlayout_encode_layoutreturn(
         struct pnfs_layout_hdr *,
         struct xdr_stream *,