nfsd: Add ALLOCATE support

The ALLOCATE operation is used to preallocate space in a file.  I can do
this by using vfs_fallocate() to do the actual preallocation.

ALLOCATE only returns a status indicator, so we don't need to write a
special encode() function.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 5720e9457f33..eeaa0d0c4f79 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -428,6 +428,13 @@ struct nfsd4_reclaim_complete {
         u32 rca_one_fs;
 };
 
+struct nfsd4_fallocate {
+        /* request */
+        stateid_t       falloc_stateid;
+        loff_t          falloc_offset;
+        u64             falloc_length;
+};
+
 struct nfsd4_seek {
         /* request */
         stateid_t       seek_stateid;
@@ -486,6 +493,7 @@ struct nfsd4_op {
                 struct nfsd4_free_stateid       free_stateid;
 
                 /* NFSv4.2 */
+                struct nfsd4_fallocate          allocate;
                 struct nfsd4_seek               seek;
         } u;
         struct nfs4_replay *                    replay;