[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-commits] [COMMIT 95b134e] migrate.c: migrate_fd_put_buffer: Do no
From: |
Anthony Liguori |
Subject: |
[Qemu-commits] [COMMIT 95b134e] migrate.c: migrate_fd_put_buffer: Do not busyloop:stop writing if EWOULDBLOCK |
Date: |
Wed, 20 May 2009 14:26:57 -0000 |
From: Uri Lublin <address@hidden>
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 <address@hidden>
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));
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Qemu-commits] [COMMIT 95b134e] migrate.c: migrate_fd_put_buffer: Do not busyloop:stop writing if EWOULDBLOCK,
Anthony Liguori <=