Re: Multiple simultaneous writes
Alan Cox (alan@lxorguk.ukuu.org.uk)
Sun, 24 Jan 1999 20:53:56 +0000 (GMT)
> I am writing a device driver that needs to handle multiple simultaneous
> writes. However, something external to the device driver seems to prevent
> this. If a write is pending, no other writes get through to the driver
> (even though the pending process is nicely sleeping away). Other I/O calls
> get through fine (a new open() call comes through while there is a write
> pending, for example), but not additional writes.
>
> Is there something I need to do to tell the "powers that be" that my
> driver can handle multiple writes?
Look at the tty code - you need to drop the inode write semaphore, then all
will work the way you wish.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/