pnfs-obj: report errors and .encode_layoutreturn Implementation.

[pandora-kernel.git] / fs / nfs / objlayout / objlayout.h

diff --git a/fs/nfs/objlayout/objlayout.h b/fs/nfs/objlayout/objlayout.h
index 9a405e8..b0bb975 100644 (file)
--- a/fs/nfs/objlayout/objlayout.h
+++ b/fs/nfs/objlayout/objlayout.h
@@ -50,6 +50,10 @@
  */
 struct objlayout {
        struct pnfs_layout_hdr pnfs_layout;
+
+        /* for layout_return */
+       spinlock_t lock;
+       struct list_head err_list;
 };
 
 static inline struct objlayout *
@@ -76,6 +80,16 @@ struct objlayout_io_state {
        int status;             /* res */
        int eof;                /* res */
        int committed;          /* res */
+
+       /* Error reporting (layout_return) */
+       struct list_head err_list;
+       unsigned num_comps;
+       /* Pointer to array of error descriptors of size num_comps.
+        * It should contain as many entries as devices in the osd_layout
+        * that participate in the I/O. It is up to the io_engine to allocate
+        * needed space and set num_comps.
+        */
+       struct pnfs_osd_ioerr *ioerrs;
 };
 
 /*
@@ -101,6 +115,10 @@ extern ssize_t objio_write_pagelist(struct objlayout_io_state *ol_state,
 /*
  * callback API
  */
+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);
+
 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,
@@ -131,4 +149,9 @@ extern enum pnfs_try_status objlayout_write_pagelist(
        struct nfs_write_data *,
        int how);
 
+extern void objlayout_encode_layoutreturn(
+       struct pnfs_layout_hdr *,
+       struct xdr_stream *,
+       const struct nfs4_layoutreturn_args *);
+
 #endif /* _OBJLAYOUT_H */