From: Asias He <asias@redhat.com>
To: Nicholas Bellinger <nab@linux-iscsi.org>
Cc: kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>,
virtualization@lists.linux-foundation.org,
target-devel@vger.kernel.org,
Stefan Hajnoczi <stefanha@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: [PATCH V2 2/6] tcm_vhost: Introduce tcm_vhost_check_feature()
Date: Fri, 8 Mar 2013 10:21:43 +0800 [thread overview]
Message-ID: <1362709307-12554-3-git-send-email-asias@redhat.com> (raw)
In-Reply-To: <1362709307-12554-1-git-send-email-asias@redhat.com>
This helper is useful to check if a feature is supported.
Signed-off-by: Asias He <asias@redhat.com>
---
drivers/vhost/tcm_vhost.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c
index b3e50d7..39654f4 100644
--- a/drivers/vhost/tcm_vhost.c
+++ b/drivers/vhost/tcm_vhost.c
@@ -91,6 +91,18 @@ static int iov_num_pages(struct iovec *iov)
((unsigned long)iov->iov_base & PAGE_MASK)) >> PAGE_SHIFT;
}
+static bool tcm_vhost_check_feature(struct vhost_scsi *vs, int feature)
+{
+ bool ret = false;
+
+ mutex_lock(&vs->dev.mutex);
+ if (vhost_has_feature(&vs->dev, feature))
+ ret = true;
+ mutex_unlock(&vs->dev.mutex);
+
+ return ret;
+}
+
static int tcm_vhost_check_true(struct se_portal_group *se_tpg)
{
return 1;
--
1.8.1.4
next prev parent reply other threads:[~2013-03-08 2:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-08 2:21 [PATCH V2 0/6] tcm_vhost hotplug/hotunplug support and locking/flushing fix Asias He
2013-03-08 2:21 ` [PATCH V2 1/6] tcm_vhost: Add missed lock in vhost_scsi_clear_endpoint() Asias He
2013-03-08 2:21 ` Asias He [this message]
2013-03-08 2:21 ` [PATCH V2 3/6] tcm_vhost: Introduce tcm_vhost_check_endpoint() Asias He
2013-03-08 2:21 ` [PATCH V2 4/6] tcm_vhost: Fix vs->vs_endpoint checking in vhost_scsi_handle_vq() Asias He
2013-03-08 2:21 ` [PATCH V2 5/6] tcm_vhost: Add hotplug/hotunplug support Asias He
2013-03-08 2:21 ` [PATCH V2 6/6] tcm_vhost: Flush vhost_work in vhost_scsi_flush() Asias He
2013-03-08 8:24 ` [PATCH V2 0/6] tcm_vhost hotplug/hotunplug support and locking/flushing fix Stefan Hajnoczi
2013-03-11 12:03 ` Michael S. Tsirkin
2013-03-12 2:31 ` Asias He
2013-03-12 9:55 ` Michael S. Tsirkin
2013-03-13 3:29 ` Asias He
2013-03-13 8:11 ` Paolo Bonzini
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