X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=Documentation%2Ffilesystems%2Frelay.txt;h=7fbb6ffe576910695a5aecabd21c1c428497304f;hb=98b96173c777c67daaa7d163a35e591e1928a164;hp=d6788dae034948ce35eab71bfa80e013217864ac;hpb=1b8b22f44bc68b066c571ca2b5ab4fda123c15bd;p=powerpc.git

diff --git a/Documentation/filesystems/relay.txt b/Documentation/filesystems/relay.txt
index d6788dae03..7fbb6ffe57 100644
--- a/Documentation/filesystems/relay.txt
+++ b/Documentation/filesystems/relay.txt
@@ -157,7 +157,7 @@ TBD(curr. line MT:/API/)
   channel management functions:
 
     relay_open(base_filename, parent, subbuf_size, n_subbufs,
-               callbacks)
+               callbacks, private_data)
     relay_close(chan)
     relay_flush(chan)
     relay_reset(chan)
@@ -251,7 +251,7 @@ static struct rchan_callbacks relay_callbacks =
 
 And an example relay_open() invocation using them:
 
-  chan = relay_open("cpu", NULL, SUBBUF_SIZE, N_SUBBUFS, &relay_callbacks);
+  chan = relay_open("cpu", NULL, SUBBUF_SIZE, N_SUBBUFS, &relay_callbacks, NULL);
 
 If the create_buf_file() callback fails, or isn't defined, channel
 creation and thus relay_open() will fail.
@@ -289,6 +289,11 @@ they use the proper locking for such a buffer, either by wrapping
 writes in a spinlock, or by copying a write function from relay.h and
 creating a local version that internally does the proper locking.
 
+The private_data passed into relay_open() allows clients to associate
+user-defined data with a channel, and is immediately available
+(including in create_buf_file()) via chan->private_data or
+buf->chan->private_data.
+
 Channel 'modes'
 ---------------