tree 3f26f286806d4b2bee83eef75faa38884e5bf725
parent 0ef849d751408a7d0c769807af037de31b88f761
author Amit Shah <amit.shah@redhat.com> 1257258594 +0530
committer Anthony Liguori <aliguori@us.ibm.com> 1258466610 -0600

char: don't limit data sent to backends to 1k per buffer

chardevs have a 'can_read' function via which backends specify
the amount of data they can receive. When can_read returns > 0,
apps can start sending data. However, each chardev driver here
allows a max. of 1k bytes inspite of the backend being able to
receive more.

The best we can do here is to allocate s->max_size bytes from
the heap on each call (which is the number returned by the
backend from the can_read call).

This is an intermediate step to bump up the bytes written in
each call to 4k.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>