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...new requests are submitted to virtqueue and and request will end with error -ENOTCONN. Signed-off-by: Vivek Goyal <vgoyal at redhat.com> --- fs/fuse/virtio_fs.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index f68a25ca9e9d..90e7b2f345e5 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -493,10 +493,24 @@ static int virtio_fs_probe(struct virtio_device *vdev) return ret; } +static void virtio_fs_stop_all_queues(struct virtio_fs *fs) +{ + struct virtio_fs_vq *fsvq; + int i; + + for (i = 0; i < fs->nvqs; i++) {...

...hen device is going away, drain all pending requests. Signed-off-by: Vivek Goyal <vgoyal at redhat.com> --- fs/fuse/virtio_fs.c | 83 ++++++++++++++++++++++++++++----------------- 1 file changed, 51 insertions(+), 32 deletions(-) diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index 90e7b2f345e5..d5730a50b303 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -63,6 +63,55 @@ static inline struct fuse_pqueue *vq_to_fpq(struct virtqueue *vq) return &vq_to_fsvq(vq)->fud->pq; } +static void virtio_fs_drain_queue(struct virtio_fs_vq *fsvq) +{ + WARN_ON(fsvq->in_flig...

Hi, Michael Tsirkin pointed out issues w.r.t various locking related TODO items and races w.r.t device removal. In this first round of cleanups, I have taken care of most pressing issues. These patches apply on top of following. git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git#virtiofs-v4 I have tested these patches with mount/umount and device removal using qemu monitor. For