diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-09-29 10:10:05 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-09-29 10:10:05 +0200 |
| commit | 17eb8812917b10ce4146b5595f91d8e45bfe68cc (patch) | |
| tree | f905aa6c71212f4b460e23ceaec98346b999066a /drivers/vhost/net.c | |
| parent | 57610d69f909ea2ea072775c6ad64ba9fad590bb (diff) | |
| parent | 23199d2aa6dcaf6dd2da772f93d2c94317d71459 (diff) | |
Merge tag 'linux-cpupower-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux
Merge cpupower utility updates for 6.18-rc1 from Shuah Khan:
"Fixes incorrect return vale in cpupower_write_sysfs() error path
and passing incorrect size to cpuidle_state_write_file() while
writing status to disable file in cpuidle_state_disable()."
* tag 'linux-cpupower-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux: (1125 commits)
tools/cpupower: Fix incorrect size in cpuidle_state_disable()
tools/cpupower: fix error return value in cpupower_write_sysfs()
Linux 6.17-rc6
MAINTAINERS: Input: Drop melfas-mip4 section
USB: core: remove the move buf action
MAINTAINERS: Update the DMA Rust entry
erofs: fix long xattr name prefix placement
Revert "net: usb: asix: ax88772: drop phylink use in PM to avoid MDIO runtime PM wakeups"
hsr: hold rcu and dev lock for hsr_get_port_ndev
hsr: use hsr_for_each_port_rtnl in hsr_port_get_hsr
hsr: use rtnl lock when iterating over ports
wifi: nl80211: completely disable per-link stats for now
net: usb: asix: ax88772: drop phylink use in PM to avoid MDIO runtime PM wakeups
net: ethtool: fix wrong type used in struct kernel_ethtool_ts_info
selftests/bpf: Skip timer cases when bpf_timer is not supported
bpf: Reject bpf_timer for PREEMPT_RT
libceph: fix invalid accesses to ceph_connection_v1_info
PM: hibernate: Restrict GFP mask in hibernation_snapshot()
MAINTAINERS: add Phil as netfilter reviewer
netfilter: nf_tables: restart set lookup on base_seq change
...
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) |