Hi all, After merging the vhost tree, today's linux-next build (x86_64 allmodconfig) failed like this: drivers/vdpa/vdpa_user/vduse_dev.c: In function 'vduse_vdpa_kick_vq': drivers/vdpa/vdpa_user/vduse_dev.c:489:6: error: implicit declaration of function 'eventfd_signal_count'; did you mean 'eventfd_signal_allowed'? [-Werror=implicit-function-declaration] 489 | if (eventfd_signal_count()) { | ^~~~~~~~~~~~~~~~~~~~ | eventfd_signal_allowed Caused by commit b66219796563 ("vduse: Introduce VDUSE - vDPA Device in Userspace") interacting with commit b542e383d8c0 ("eventfd: Make signal recursion protection a task bit") from Linus' tree. I have applied the following merge fix patch for today. From: Stephen Rothwell Date: Mon, 6 Sep 2021 12:43:32 +1000 Subject: [PATCH] fix up for "eventfd: Make signal recursion protection a task bit" Signed-off-by: Stephen Rothwell --- drivers/vdpa/vdpa_user/vduse_dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vduse_dev.c index 59a93e5b967a..5c25ff6483ad 100644 --- a/drivers/vdpa/vdpa_user/vduse_dev.c +++ b/drivers/vdpa/vdpa_user/vduse_dev.c @@ -486,7 +486,7 @@ static void vduse_vdpa_kick_vq(struct vdpa_device *vdpa, u16 idx) struct vduse_dev *dev = vdpa_to_vduse(vdpa); struct vduse_virtqueue *vq = &dev->vqs[idx]; - if (eventfd_signal_count()) { + if (eventfd_signal_allowed()) { schedule_work(&vq->kick); return; } -- 2.32.0 -- Cheers, Stephen Rothwell