From 95b134ea02a3e2c2508f907db4ab1379ffdb0bef Mon Sep 17 00:00:00 2001 From: Uri Lublin Date: Tue, 19 May 2009 14:08:53 +0300 Subject: migrate.c: migrate_fd_put_buffer: Do not busyloop: stop writing if EWOULDBLOCK The migration code is non-blocking, designed for live migration. Practically migrate_fd_put_buffer busy-loops trying to write, as on many machines EWOULDBLOCK==EAGAIN (look in include/asm-generic/errno.h). Signed-off-by: Uri Lublin --- migration.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'migration.c') diff --git a/migration.c b/migration.c index 859d945..ca397fa 100644 --- a/migration.c +++ b/migration.c @@ -176,7 +176,7 @@ ssize_t migrate_fd_put_buffer(void *opaque, const void *data, size_t size) do { ret = s->write(s, data, size); - } while (ret == -1 && ((s->get_error(s)) == EINTR || (s->get_error(s)) == EWOULDBLOCK)); + } while (ret == -1 && ((s->get_error(s)) == EINTR)); if (ret == -1) ret = -(s->get_error(s)); -- cgit v1.1