diff options
| author | Mark Brown <broonie@kernel.org> | 2025-09-01 23:47:23 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-09-01 23:47:23 +0100 |
| commit | 4de51e81379aa3acbceddb7aec18a36b733fb6cb (patch) | |
| tree | 5d607ac61193a5d0fc4c5e56913af25f59593d37 /drivers/vhost/net.c | |
| parent | 7446284023e8ef694fb392348185349c773eefb3 (diff) | |
| parent | 431f6c88cb5d2d62d579d4d78f5c1a2583465ffb (diff) | |
spi: spi-fsl-lpspi: Generic fixes and support for
Merge series from James Clark <james.clark@linaro.org>:
Various fixes for LPSI along with some refactorings. None of the fixes
are strictly related to S32G, however these changes all originate from
the work to support S32G devices. The only commits that are strictly
related are for the new s32g2 and s32g3 compatible strings.
Diffstat (limited to 'drivers/vhost/net.c')
| -rw-r--r-- | drivers/vhost/net.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 6edac0c1ba9b..c6508fe0d5c8 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -99,6 +99,7 @@ struct vhost_net_ubuf_ref { atomic_t refcount; wait_queue_head_t wait; struct vhost_virtqueue *vq; + struct rcu_head rcu; }; #define VHOST_NET_BATCH 64 @@ -250,9 +251,13 @@ vhost_net_ubuf_alloc(struct vhost_virtqueue *vq, bool zcopy) static int vhost_net_ubuf_put(struct vhost_net_ubuf_ref *ubufs) { - int r = atomic_sub_return(1, &ubufs->refcount); + int r; + + rcu_read_lock(); + r = atomic_sub_return(1, &ubufs->refcount); if (unlikely(!r)) wake_up(&ubufs->wait); + rcu_read_unlock(); return r; } @@ -265,7 +270,7 @@ static void vhost_net_ubuf_put_and_wait(struct vhost_net_ubuf_ref *ubufs) static void vhost_net_ubuf_put_wait_and_free(struct vhost_net_ubuf_ref *ubufs) { vhost_net_ubuf_put_and_wait(ubufs); - kfree(ubufs); + kfree_rcu(ubufs, rcu); } static void vhost_net_clear_ubuf_info(struct vhost_net *n) |