From: Ronnie Sahlberg <ronniesahlb...@gmail.com>
Otherwise, If we add an event for -is-writeable but the socket is
already writeable there may be a delay before the event callback
is actually triggered.
Those delays would in particular hurt performance during BIOS boot and
when the GRUB bootloader reads the kernel and initrd.
Signed-off-by: Ronnie Sahlberg <ronniesahlb...@gmail.com>
---
block/iscsi.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/block/iscsi.c b/block/iscsi.c
index d37c4ee..f956824 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -109,6 +109,13 @@ iscsi_set_events(IscsiLun *iscsilun)
(iscsi_which_events(iscsi) & POLLOUT)
? iscsi_process_write : NULL,
iscsi_process_flush, iscsilun);
+
+ /* If we just added the event for writeable we must call
+ and the socket is already writeable the callback might
+ not be invoked until after a short delay unless we call
+ qemu_notify_event().
+ */
+ qemu_notify_event();
}
static void
--
1.7.10.1
