3 files changed, 27 insertions, 10 deletions

diff --git a/fs/nfs/iostat.h b/fs/nfs/iostat.h
index dc080e5..7a74951 100644
--- a/fs/nfs/iostat.h
+++ b/fs/nfs/iostat.h
@@ -103,6 +103,7 @@ enum nfs_stat_eventcounters {
 	NFSIOS_SILLYRENAME,
 	NFSIOS_SHORTREAD,
 	NFSIOS_SHORTWRITE,
+	NFSIOS_DELAY,
 	__NFSIOS_COUNTSMAX,
 };
 
@@ -116,28 +117,38 @@ struct nfs_iostats {
 	unsigned long		events[__NFSIOS_COUNTSMAX];
 } ____cacheline_aligned;
 
-static inline void nfs_inc_stats(struct inode *inode, enum nfs_stat_eventcounters stat)
+static inline void nfs_inc_server_stats(struct nfs_server *server, enum nfs_stat_eventcounters stat)
 {
 	struct nfs_iostats *iostats;
 	int cpu;
 
 	cpu = get_cpu();
-	iostats = per_cpu_ptr(NFS_SERVER(inode)->io_stats, cpu);
+	iostats = per_cpu_ptr(server->io_stats, cpu);
 	iostats->events[stat] ++;
 	put_cpu_no_resched();
 }
 
-static inline void nfs_add_stats(struct inode *inode, enum nfs_stat_bytecounters stat, unsigned long addend)
+static inline void nfs_inc_stats(struct inode *inode, enum nfs_stat_eventcounters stat)
+{
+	nfs_inc_server_stats(NFS_SERVER(inode), stat);
+}
+
+static inline void nfs_add_server_stats(struct nfs_server *server, enum nfs_stat_bytecounters stat, unsigned long addend)
 {
 	struct nfs_iostats *iostats;
 	int cpu;
 
 	cpu = get_cpu();
-	iostats = per_cpu_ptr(NFS_SERVER(inode)->io_stats, cpu);
+	iostats = per_cpu_ptr(server->io_stats, cpu);
 	iostats->bytes[stat] += addend;
 	put_cpu_no_resched();
 }
 
+static inline void nfs_add_stats(struct inode *inode, enum nfs_stat_bytecounters stat, unsigned long addend)
+{
+	nfs_add_server_stats(NFS_SERVER(inode), stat, addend);
+}
+
 static inline struct nfs_iostats *nfs_alloc_iostats(void)
 {
 	return alloc_percpu(struct nfs_iostats);
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index ed67567..7204ba5 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -19,6 +19,8 @@
 #include <linux/smp_lock.h>
 #include <linux/nfs_mount.h>
 
+#include "iostat.h"
+
 #define NFSDBG_FACILITY		NFSDBG_PROC
 
 extern struct rpc_procinfo nfs3_procedures[];
@@ -58,10 +60,11 @@ nfs3_rpc_call_wrapper(struct rpc_clnt *clnt, u32 proc, void *argp, void *resp, i
 		nfs3_rpc_wrapper(clnt, msg, flags)
 
 static int
-nfs3_async_handle_jukebox(struct rpc_task *task)
+nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
 {
 	if (task->tk_status != -EJUKEBOX)
 		return 0;
+	nfs_inc_stats(inode, NFSIOS_DELAY);
 	task->tk_status = 0;
 	rpc_restart_call(task);
 	rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
@@ -447,7 +450,7 @@ nfs3_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
 	struct rpc_message *msg = &task->tk_msg;
 	struct nfs_fattr	*dir_attr;
 
-	if (nfs3_async_handle_jukebox(task))
+	if (nfs3_async_handle_jukebox(task, dir->d_inode))
 		return 1;
 	if (msg->rpc_argp) {
 		dir_attr = (struct nfs_fattr*)msg->rpc_resp;
@@ -748,7 +751,7 @@ static void nfs3_read_done(struct rpc_task *task, void *calldata)
 {
 	struct nfs_read_data *data = calldata;
 
-	if (nfs3_async_handle_jukebox(task))
+	if (nfs3_async_handle_jukebox(task, data->inode))
 		return;
 	/* Call back common NFS readpage processing */
 	if (task->tk_status >= 0)
@@ -786,7 +789,7 @@ static void nfs3_write_done(struct rpc_task *task, void *calldata)
 {
 	struct nfs_write_data *data = calldata;
 
-	if (nfs3_async_handle_jukebox(task))
+	if (nfs3_async_handle_jukebox(task, data->inode))
 		return;
 	if (task->tk_status >= 0)
 		nfs_post_op_update_inode(data->inode, data->res.fattr);
@@ -833,7 +836,7 @@ static void nfs3_commit_done(struct rpc_task *task, void *calldata)
 {
 	struct nfs_write_data *data = calldata;
 
-	if (nfs3_async_handle_jukebox(task))
+	if (nfs3_async_handle_jukebox(task, data->inode))
 		return;
 	if (task->tk_status >= 0)
 		nfs_post_op_update_inode(data->inode, data->res.fattr);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 77a565e..f1ff4fa 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -51,6 +51,7 @@
 
 #include "nfs4_fs.h"
 #include "delegation.h"
+#include "iostat.h"
 
 #define NFSDBG_FACILITY		NFSDBG_PROC
 
@@ -2755,8 +2756,10 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server)
 				rpc_wake_up_task(task);
 			task->tk_status = 0;
 			return -EAGAIN;
-		case -NFS4ERR_GRACE:
 		case -NFS4ERR_DELAY:
+			nfs_inc_server_stats((struct nfs_server *) server,
+						NFSIOS_DELAY);
+		case -NFS4ERR_GRACE:
 			rpc_delay(task, NFS4_POLL_RETRY_MAX);
 			task->tk_status = 0;
 			return -EAGAIN;