[PATCH 47/47] nfs: trace nfs_commit_release()

[Wu Fengguang]

Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx>
---
 fs/nfs/write.c             |    3 +++
 include/trace/events/nfs.h |   31 +++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

--- linux-next.orig/fs/nfs/write.c	2010-12-08 22:44:38.000000000 +0800
+++ linux-next/fs/nfs/write.c	2010-12-08 22:44:38.000000000 +0800
@@ -1475,6 +1475,9 @@ static void nfs_commit_release(void *cal
 	}
 	nfs_commit_clear_lock(NFS_I(data->inode));
 	nfs_commit_wakeup(NFS_SERVER(data->inode));
+	trace_nfs_commit_release(data->inode,
+				 data->args.offset,
+				 data->args.count);
 	nfs_commitdata_release(calldata);
 }
 
--- linux-next.orig/include/trace/events/nfs.h	2010-12-08 22:44:38.000000000 +0800
+++ linux-next/include/trace/events/nfs.h	2010-12-08 22:44:38.000000000 +0800
@@ -51,6 +51,37 @@ TRACE_EVENT(nfs_commit_unstable_pages,
 	)
 );
 
+TRACE_EVENT(nfs_commit_release,
+
+	TP_PROTO(struct inode *inode,
+		 unsigned long offset,
+		 unsigned long len),
+
+	TP_ARGS(inode, offset, len),
+
+	TP_STRUCT__entry(
+		__array(char, name, 32)
+		__field(unsigned long,	ino)
+		__field(unsigned long,	offset)
+		__field(unsigned long,	len)
+	),
+
+	TP_fast_assign(
+		strncpy(__entry->name,
+			dev_name(inode->i_mapping->backing_dev_info->dev), 32);
+		__entry->ino		= inode->i_ino;
+		__entry->offset		= offset;
+		__entry->len		= len;
+	),
+
+	TP_printk("bdi %s: ino=%lu offset=%lu len=%lu",
+		  __entry->name,
+		  __entry->ino,
+		  __entry->offset,
+		  __entry->len
+	)
+);
+
 
 #endif /* _TRACE_NFS_H */
 


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