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| author | Uri Lublin <uril@redhat.com> | 2009-05-19 14:08:53 +0300 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2009-05-20 09:12:57 -0500 |
| commit | 95b134ea02a3e2c2508f907db4ab1379ffdb0bef (patch) | |
| tree | a45e38e31af24878b2a34caaa57454f8f8822fb2 /migration.c | |
| parent | 76ae317f7c16aec6b469604b1764094870a75470 (diff) | |
| download | qemu-95b134ea02a3e2c2508f907db4ab1379ffdb0bef.zip qemu-95b134ea02a3e2c2508f907db4ab1379ffdb0bef.tar.gz qemu-95b134ea02a3e2c2508f907db4ab1379ffdb0bef.tar.bz2 | |
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>
Diffstat (limited to 'migration.c')
| -rw-r--r-- | migration.c | 2 |
1 files changed, 1 insertions, 1 deletions
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)); |