From: Markus Armbruster <arm...@redhat.com>
socket_writev_buffer() writes in a loop, using g_poll() to block. If
g_poll() fails, it tries to write more before the file descriptor is
ready. In theory, this could go into a tight loop. In practice,
errors other than EINTR are really unlikely, and when they happen,
we're probably screwed anyway, so we can just as well loop.
Clean it up a bit: retry poll on EINTR, keep ignoring other errors.
Signed-off-by: Markus Armbruster <arm...@redhat.com>
Reviewed-by: Paolo Bonzini <pbonz...@redhat.com>
Reviewed-by: Juan Quintela <quint...@redhat.com>
Signed-off-by: Juan Quintela <quint...@redhat.com>
---
migration/qemu-file-unix.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/migration/qemu-file-unix.c b/migration/qemu-file-unix.c
index c503b02..6ca53e7 100644
--- a/migration/qemu-file-unix.c
+++ b/migration/qemu-file-unix.c
@@ -72,7 +72,8 @@ static ssize_t socket_writev_buffer(void *opaque, struct
iovec *iov, int iovcnt,
pfd.fd = s->fd;
pfd.events = G_IO_OUT | G_IO_ERR;
pfd.revents = 0;
- g_poll(&pfd, 1 /* 1 fd */, -1 /* no timeout */);
+ TFR(err = g_poll(&pfd, 1, -1 /* no timeout */));
+ /* Errors other than EINTR intentionally ignored */
}
}
--
2.5.0
