NFSv4.1: Convert slotid from u8 to u32

It is perfectly legal to negotiate up to 2^32-1 slots in the protocol,
and with 10GigE, we are already seeing that 255 slots is far too limiting.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

2 files changed, 5 insertions, 4 deletions

diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 9e101c1b81cf..2ae57f2f645b 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -191,6 +191,7 @@ struct nfs_server {
 
 /* maximum number of slots to use */
 #define NFS4_MAX_SLOT_TABLE (128U)
+#define NFS4_NO_SLOT ((u32)-1)
 
 #if defined(CONFIG_NFS_V4)
 
@@ -201,10 +202,10 @@ struct nfs4_slot_table {
         unsigned long   used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */
         spinlock_t      slot_tbl_lock;
         struct rpc_wait_queue   slot_tbl_waitq; /* allocators may wait here */
-        int             max_slots;              /* # slots in table */
-        int             highest_used_slotid;    /* sent to server on each SEQ.
+        u32             max_slots;              /* # slots in table */
+        u32             highest_used_slotid;    /* sent to server on each SEQ.
                                                  * op for dynamic resizing */
-        int             target_max_slots;       /* Set by CB_RECALL_SLOT as
+        u32             target_max_slots;       /* Set by CB_RECALL_SLOT as
                                                  * the new max_slots */
         struct completion complete;
 };
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 144419a9cbd3..adbc84ac345f 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -181,7 +181,7 @@ struct nfs4_slot {
 
 struct nfs4_sequence_args {
         struct nfs4_session     *sa_session;
-        u8                      sa_slotid;
+        u32                     sa_slotid;
         u8                      sa_cache_this;
 };