buffered_file: do not send more than s->bytes_xfer bytes per tick

Sending more was possible if the buffer was large.

Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
(cherry picked from commit bde54c08b4854aceee3dee25121a2b835cb81166)

Conflicts:
	buffered_file.c

1 files changed, 1 insertions, 0 deletions

diff --git a/buffered_file.c b/buffered_file.c
index f170aa046..1e9b0504f 100644
--- a/buffered_file.c
+++ b/buffered_file.c
@@ -85,6 +85,7 @@ static void buffered_flush(QEMUFileBuffered *s)
 
     while (offset < s->buffer_size) {
         ssize_t ret;
+        size_t to_send = MIN(s->buffer_size - offset, s->xfer_limit - offset);
 
         ret = s->put_buffer(s->opaque, s->buffer + offset,
                             s->buffer_size - offset);