read() called twice for /proc files

From: Tim Hockin (
Date: Mon Sep 24 2001 - 20:29:49 EST

Is there a general solution to the case of read() being called minimum
twice for a file in /proc? I have a small file in /proc, whose data takes
a fair time to generate. My read() handler gets called once for the data,
and once so I can return 0 to terminate read().

This results in the actual read taking twice as long. Perhaps I am missing

Tim Hockin
Systems Software Engineer
Sun Microsystems, Cobalt Server Appliances
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

This archive was generated by hypermail 2b29 : Sun Sep 30 2001 - 21:00:28 EST