pnfs-obj: define per-inode private structure
allocate and deallocate per-inode private pnfs_layout_hdr
in preparation for I/O implementation.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
diff --git a/fs/nfs/objlayout/objlayout.h b/fs/nfs/objlayout/objlayout.h
index 0814271..fa02621 100644
--- a/fs/nfs/objlayout/objlayout.h
+++ b/fs/nfs/objlayout/objlayout.h
@@ -46,6 +46,19 @@
#include "../pnfs.h"
/*
+ * per-inode layout
+ */
+struct objlayout {
+ struct pnfs_layout_hdr pnfs_layout;
+};
+
+static inline struct objlayout *
+OBJLAYOUT(struct pnfs_layout_hdr *lo)
+{
+ return container_of(lo, struct objlayout, pnfs_layout);
+}
+
+/*
* Raid engine I/O API
*/
extern int objio_alloc_lseg(struct pnfs_layout_segment **outp,
@@ -66,6 +79,10 @@
/*
* exported generic objects function vectors
*/
+
+extern struct pnfs_layout_hdr *objlayout_alloc_layout_hdr(struct inode *, gfp_t gfp_flags);
+extern void objlayout_free_layout_hdr(struct pnfs_layout_hdr *);
+
extern struct pnfs_layout_segment *objlayout_alloc_lseg(
struct pnfs_layout_hdr *,
struct nfs4_layoutget_res *,