Updated with sepcifics of how we determine sendfile.

Jeremy.

diff --git a/docs/smbdotconf/tuning/usesendfile.xml b/docs/smbdotconf/tuning/usesendfile.xml
index 8c26fa2a52a9bc4e7829b2934088f48a65394e5e..0fa3340abcadc0edfdaa1539c67f694f6ad044b3 100644 (file)
--- a/docs/smbdotconf/tuning/usesendfile.xml
+++ b/docs/smbdotconf/tuning/usesendfile.xml
@@ -6,7 +6,9 @@
        <para>If this parameter is <constant>yes</constant>, and the <constant>sendfile()</constant> system call is supported by the underlying operating system, then some SMB read calls (mainly ReadAndX
     and ReadRaw) will use the more efficient sendfile system call for files that
     are exclusively oplocked. This may make more efficient use of the system CPU's
-    and cause Samba to be faster. 
+    and cause Samba to be faster. Samba automatically turns this off for clients
+    that use protocol levels lower than NT LM 0.12 and when it detects a client is
+    Windows 9x (using sendfile from Linux will cause these clients to fail).
     </para>
 </description>