From: Konstantin Khlebnikov <khlebnikov@openvz.org>
Date: Mon, 21 Feb 2011 21:28:34 +0000 (+0300)
Subject: NFS: account direct-io into task io accounting
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7ec10f26e1fd5fcceb9c96e508c1292a816199f7;p=openwrt%2Fstaging%2Fblogic.git

NFS: account direct-io into task io accounting

Account NFS direct-io reads and writes into Task I/O Accounting.
Do it before complition to handle aio.

NFS have unusual direct-io implementation,
thus accounting in generic code does not work.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index f493bdd74f78..8eea25366717 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -45,6 +45,7 @@
 #include <linux/pagemap.h>
 #include <linux/kref.h>
 #include <linux/slab.h>
+#include <linux/task_io_accounting_ops.h>
 
 #include <linux/nfs_fs.h>
 #include <linux/nfs_page.h>
@@ -937,6 +938,8 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, const struct iovec *iov,
 	if (retval)
 		goto out;
 
+	task_io_account_read(count);
+
 	retval = nfs_direct_read(iocb, iov, nr_segs, pos);
 	if (retval > 0)
 		iocb->ki_pos = pos + retval;
@@ -998,6 +1001,8 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, const struct iovec *iov,
 	if (retval)
 		goto out;
 
+	task_io_account_write(count);
+
 	retval = nfs_direct_write(iocb, iov, nr_segs, pos, count);
 
 	if (retval > 0)