Patch-mainline: v5.15-rc3
Git-commit: 96f5bd03e1be606987644b71899ea56a8d05f825
References: git-fixes
From: Juergen Gross <jgross@suse.com>
Date: Mon, 20 Sep 2021 12:03:45 +0200
Subject: [PATCH] xen/balloon: fix balloon kthread freezing
Commit 8480ed9c2bbd56 ("xen/balloon: use a kernel thread instead a
workqueue") switched the Xen balloon driver to use a kernel thread.
Unfortunately the patch omitted to call try_to_freeze() or to use
wait_event_freezable_timeout(), causing a system suspend to fail.
Fixes: 8480ed9c2bbd56 ("xen/balloon: use a kernel thread instead a workqueue")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20210920100345.21939-1-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
---
drivers/xen/balloon.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 2d2803883306..43ebfe36ac27 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -522,8 +522,8 @@ static int balloon_thread(void *unused)
timeout = 3600 * HZ;
credit = current_credit();
- wait_event_interruptible_timeout(balloon_thread_wq,
- balloon_thread_cond(state, credit), timeout);
+ wait_event_freezable_timeout(balloon_thread_wq,
+ balloon_thread_cond(state, credit), timeout);
if (kthread_should_stop())
return 0;
--
2.35.3