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| author | Mike Christie <michael.christie@oracle.com> | 2023-03-21 05:06:21 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-04-21 10:02:30 +0300 |
| commit | eb1b291466376ad4d2f0a42392a2cd9f0e4983e5 (patch) | |
| tree | 4338cd310489fcbc03e903a0648e460bf632caf7 /drivers/vhost/scsi.c | |
| parent | 9a10cb4de33f4c914bd2e33ac05cff3ddb6a67b0 (diff) | |
| download | linux-eb1b291466376ad4d2f0a42392a2cd9f0e4983e5.tar.xz | |
vhost-scsi: Drop device mutex use in vhost_scsi_do_plug
We don't need the device mutex in vhost_scsi_do_plug because:
1. we have the vhost_scsi_mutex so the tpg->vhost_scsi pointer will not
change on us and the vhost_scsi can't be freed from under us if it was
set.
2. vhost_scsi_clear_endpoint will stop the virtqueues and flush them while
holding the vhost_scsi_mutex so we know once vhost_scsi_clear_endpoint
has completed that vhost_scsi_do_plug can't send new events and any
queued ones have completed.
So this patch drops the device mutex use in vhost_scsi_do_plug.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230321020624.13323-5-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/scsi.c')
| -rw-r--r-- | drivers/vhost/scsi.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index 502d6803df0b..c945136ecf18 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -2003,8 +2003,6 @@ vhost_scsi_do_plug(struct vhost_scsi_tpg *tpg, if (!vs) return; - mutex_lock(&vs->dev.mutex); - if (plug) reason = VIRTIO_SCSI_EVT_RESET_RESCAN; else @@ -2016,7 +2014,6 @@ vhost_scsi_do_plug(struct vhost_scsi_tpg *tpg, vhost_scsi_send_evt(vs, tpg, lun, VIRTIO_SCSI_T_TRANSPORT_RESET, reason); mutex_unlock(&vq->mutex); - mutex_unlock(&vs->dev.mutex); } static void vhost_scsi_hotplug(struct vhost_scsi_tpg *tpg, struct se_lun *lun) |