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
something...
What if the proc generic stuff used file->private_data as an EOF flag. It
seems really bizarre that the read loop loops until return 0 or eof is
set. We promptly throw away the EOF information that the read() handler
set.
Would it break anything? Is there something I am not seeing in the larger
picture?
-- Tim Hockin Systems Software Engineer Sun Microsystems, Cobalt Server Appliances thockin@sun.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/