scsi.c (e7802212ea4bbbd5db99181942a19ab36ca4b914) scsi.c (22fa90c7fb479694d6affebc049d21f06b714be6)
1/*******************************************************************************
2 * Vhost kernel TCM fabric driver for virtio SCSI initiators
3 *
4 * (C) Copyright 2010-2012 RisingTide Systems LLC.
5 * (C) Copyright 2010-2012 IBM Corp.
6 *
7 * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
8 *

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1218 mutex_unlock(&tpg->tv_tpg_mutex);
1219 }
1220
1221 if (match) {
1222 memcpy(vs->vs_vhost_wwpn, t->vhost_wwpn,
1223 sizeof(vs->vs_vhost_wwpn));
1224 for (i = 0; i < VHOST_SCSI_MAX_VQ; i++) {
1225 vq = &vs->vqs[i].vq;
1/*******************************************************************************
2 * Vhost kernel TCM fabric driver for virtio SCSI initiators
3 *
4 * (C) Copyright 2010-2012 RisingTide Systems LLC.
5 * (C) Copyright 2010-2012 IBM Corp.
6 *
7 * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
8 *

--- 1209 unchanged lines hidden (view full) ---

1218 mutex_unlock(&tpg->tv_tpg_mutex);
1219 }
1220
1221 if (match) {
1222 memcpy(vs->vs_vhost_wwpn, t->vhost_wwpn,
1223 sizeof(vs->vs_vhost_wwpn));
1224 for (i = 0; i < VHOST_SCSI_MAX_VQ; i++) {
1225 vq = &vs->vqs[i].vq;
1226 /* Flushing the vhost_work acts as synchronize_rcu */
1227 mutex_lock(&vq->mutex);
1226 mutex_lock(&vq->mutex);
1228 rcu_assign_pointer(vq->private_data, vs_tpg);
1227 vq->private_data = vs_tpg;
1229 vhost_init_used(vq);
1230 mutex_unlock(&vq->mutex);
1231 }
1232 ret = 0;
1233 } else {
1234 ret = -EEXIST;
1235 }
1236

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1299 tpg->vhost_scsi = NULL;
1300 vs->vs_tpg[target] = NULL;
1301 match = true;
1302 mutex_unlock(&tpg->tv_tpg_mutex);
1303 }
1304 if (match) {
1305 for (i = 0; i < VHOST_SCSI_MAX_VQ; i++) {
1306 vq = &vs->vqs[i].vq;
1228 vhost_init_used(vq);
1229 mutex_unlock(&vq->mutex);
1230 }
1231 ret = 0;
1232 } else {
1233 ret = -EEXIST;
1234 }
1235

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1298 tpg->vhost_scsi = NULL;
1299 vs->vs_tpg[target] = NULL;
1300 match = true;
1301 mutex_unlock(&tpg->tv_tpg_mutex);
1302 }
1303 if (match) {
1304 for (i = 0; i < VHOST_SCSI_MAX_VQ; i++) {
1305 vq = &vs->vqs[i].vq;
1307 /* Flushing the vhost_work acts as synchronize_rcu */
1308 mutex_lock(&vq->mutex);
1306 mutex_lock(&vq->mutex);
1309 rcu_assign_pointer(vq->private_data, NULL);
1307 vq->private_data = NULL;
1310 mutex_unlock(&vq->mutex);
1311 }
1312 }
1313 /*
1314 * Act as synchronize_rcu to make sure access to
1315 * old vs->vs_tpg is finished.
1316 */
1317 vhost_scsi_flush(vs);

--- 837 unchanged lines hidden --- 		1308 mutex_unlock(&vq->mutex);
1309 }
1310 }
1311 /*
1312 * Act as synchronize_rcu to make sure access to
1313 * old vs->vs_tpg is finished.
1314 */
1315 vhost_scsi_flush(vs);

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