[CIFS] CIFS Stats improvements

New cifs_writepages routine was not updated bytes written in cifs stats.
Also added ability to clear /proc/fs/cifs/Stats by writing (0 or 1) to it.
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index b2a9383..f554a70 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -9,7 +9,7 @@
 supports large readx/writex, even when directio mount flag not specified.
 Write size will in many cases now be 16K instead of 4K which greatly helps
 file copy performance on lightly loaded networks.  Fix oops in dnotify
-when experimental config flag enabled.
+when experimental config flag enabled. Make cifsFYI more granular.
 
 Version 1.37
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