diff options
| author | Uri Lublin <uril@redhat.com> | 2009-05-19 14:08:53 +0300 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2009-05-20 13:21:24 -0500 |
| commit | 3978d7b4c8fe68dc45ea40097c76017938fb0ba7 (patch) | |
| tree | 248a40b0da30403d41099cfa3e199b0562c35a55 | |
| parent | dc0be040c2f1eae7bca164654cd21603c6c44dad (diff) | |
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 <uril@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
| -rw-r--r-- | migration.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/migration.c b/migration.c index ee9e20e4bb..06ea795cf1 100644 --- a/migration.c +++ b/migration.c @@ -168,7 +168,7 @@ 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)); |