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[Qemu-devel] [PATCH] xen: handle backend deletion from xenstore
From: |
Stefano Stabellini |
Subject: |
[Qemu-devel] [PATCH] xen: handle backend deletion from xenstore |
Date: |
Wed, 11 Apr 2012 14:42:19 +0100 |
Signed-off-by: Stefano Stabellini <address@hidden>
---
hw/xen_backend.c | 17 +++++++++--------
hw/xen_disk.c | 4 ++++
2 files changed, 13 insertions(+), 8 deletions(-)
diff --git a/hw/xen_backend.c b/hw/xen_backend.c
index d876cab..555da41 100644
--- a/hw/xen_backend.c
+++ b/hw/xen_backend.c
@@ -589,7 +589,7 @@ static void xenstore_update_be(char *watch, char *type, int
dom,
struct XenDevOps *ops)
{
struct XenDevice *xendev;
- char path[XEN_BUFSIZE], *dom0;
+ char path[XEN_BUFSIZE], *dom0, *bepath;
unsigned int len, dev;
dom0 = xs_get_domain_path(xenstore, 0);
@@ -608,15 +608,16 @@ static void xenstore_update_be(char *watch, char *type,
int dom,
return;
}
- if (0) {
- /* FIXME: detect devices being deleted from xenstore ... */
- xen_be_del_xendev(dom, dev);
- }
-
xendev = xen_be_get_xendev(type, dom, dev, ops);
if (xendev != NULL) {
- xen_be_backend_changed(xendev, path);
- xen_be_check_state(xendev);
+ bepath = xs_read(xenstore, 0, xendev->be, &len);
+ if (bepath == NULL) {
+ xen_be_del_xendev(dom, dev);
+ } else {
+ free(bepath);
+ xen_be_backend_changed(xendev, path);
+ xen_be_check_state(xendev);
+ }
}
}
diff --git a/hw/xen_disk.c b/hw/xen_disk.c
index e9bbbf7..8217109 100644
--- a/hw/xen_disk.c
+++ b/hw/xen_disk.c
@@ -824,6 +824,10 @@ static int blk_free(struct XenDevice *xendev)
struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
struct ioreq *ioreq;
+ if (blkdev->bs || blkdev->sring) {
+ blk_disconnect(xendev);
+ }
+
while (!QLIST_EMPTY(&blkdev->freelist)) {
ioreq = QLIST_FIRST(&blkdev->freelist);
QLIST_REMOVE(ioreq, list);
--
1.7.2.5
- [Qemu-devel] [PATCH] xen: handle backend deletion from xenstore,
Stefano Stabellini <=