pnfs: alloc and free layout_hdr layoutdriver methods

[gfp_flags]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index f37ab3539cbf..925d6ef8ba79 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -73,6 +73,10 @@ struct pnfs_layoutdriver_type {
         const u32 id;
         const char *name;
         struct module *owner;
+
+        struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags);
+        void (*free_layout_hdr) (struct pnfs_layout_hdr *);
+
         struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags);
         void (*free_lseg) (struct pnfs_layout_segment *lseg);