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On Wed, May 31, 2023 at 5:14?PM Oleg Nesterov <oleg at redhat.com> wrote: > > On 05/31, Jason Wang wrote: > > > > On Wed, May 31, 2023 at 3:25?PM Oleg Nesterov <oleg at redhat.com> wrote: > > > > > > On 05/31, Jason Wang wrote: > > > > > > > > ? 2023/5/23 20:15, Oleg Nesterov ??: > > > > > > > > >

On 05/31, Jason Wang wrote: > > On Wed, May 31, 2023 at 3:25?PM Oleg Nesterov <oleg at redhat.com> wrote: > > > > On 05/31, Jason Wang wrote: > > > > > > ? 2023/5/23 20:15, Oleg Nesterov ??: > > > > > > > > /* make sure flag is seen after deletion */ > > > > smp_wmb(); > > > >

This drops the cmd completion list spin lock and makes the cmd completion queue lock-less. Signed-off-by: Asias He <asias at redhat.com> --- drivers/vhost/tcm_vhost.c | 46 +++++++++++++--------------------------------- drivers/vhost/tcm_vhost.h | 2 +- 2 files changed, 14 insertions(+), 34 deletions(-) diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index

This drops the cmd completion list spin lock and makes the cmd completion queue lock-less. Signed-off-by: Asias He <asias at redhat.com> --- drivers/vhost/tcm_vhost.c | 46 +++++++++++++--------------------------------- drivers/vhost/tcm_vhost.h | 2 +- 2 files changed, 14 insertions(+), 34 deletions(-) diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index

This patch makes vhost_scsi_flush() wait for all the pending requests issued before the flush operation to be finished. Changes in v4: - Introduce vhost_scsi_inflight - Drop array to track flush Changes in v3: - Rebase - Drop 'tcm_vhost: Wait for pending requests in vhost_scsi_clear_endpoint()' in this series, we already did that in 'tcm_vhost: Use vq->private_data to indicate

This patch makes vhost_scsi_flush() wait for all the pending requests issued before the flush operation to be finished. Changes in v4: - Introduce vhost_scsi_inflight - Drop array to track flush Changes in v3: - Rebase - Drop 'tcm_vhost: Wait for pending requests in vhost_scsi_clear_endpoint()' in this series, we already did that in 'tcm_vhost: Use vq->private_data to indicate

In commit 365a7150094 ([SCSI] virtio-scsi: hotplug support for virtio-scsi), hotplug support is added to virtio-scsi. This patch adds hotplug and hotunplug support to tcm_vhost. You can create or delate a LUN in targetcli to hotplug or hotplug a LUN in guest. Signed-off-by: Asias He <asias at redhat.com> --- drivers/vhost/tcm_vhost.c | 171 ++++++++++++++++++++++++++++++++++++++++++++--

In commit 365a7150094 ([SCSI] virtio-scsi: hotplug support for virtio-scsi), hotplug support is added to virtio-scsi. This patch adds hotplug and hotunplug support to tcm_vhost. You can create or delate a LUN in targetcli to hotplug or hotplug a LUN in guest. Signed-off-by: Asias He <asias at redhat.com> --- drivers/vhost/tcm_vhost.c | 171 ++++++++++++++++++++++++++++++++++++++++++++--

Asias He (4): tcm_vhost: Refactor the lock nesting rule tcm_vhost: Add hotplug/hotunplug support tcm_vhost: Add ioctl to get and set events missed flag tcm_vhost: Enable VIRTIO_SCSI_F_HOTPLUG drivers/vhost/tcm_vhost.c | 262 +++++++++++++++++++++++++++++++++++++++++++--- drivers/vhost/tcm_vhost.h | 13 +++ 2 files changed, 259 insertions(+), 16 deletions(-) -- 1.8.1.4

Asias He (4): tcm_vhost: Refactor the lock nesting rule tcm_vhost: Add hotplug/hotunplug support tcm_vhost: Add ioctl to get and set events missed flag tcm_vhost: Enable VIRTIO_SCSI_F_HOTPLUG drivers/vhost/tcm_vhost.c | 262 +++++++++++++++++++++++++++++++++++++++++++--- drivers/vhost/tcm_vhost.h | 13 +++ 2 files changed, 259 insertions(+), 16 deletions(-) -- 1.8.1.4

Changes in v2: - Increase/Decrease inflight requests in vhost_scsi_{allocate,free}_cmd and tcm_vhost_{allocate,free}_evt Asias He (3): tcm_vhost: Wait for pending requests in vhost_scsi_flush() tcm_vhost: Wait for pending requests in vhost_scsi_clear_endpoint() tcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq drivers/vhost/tcm_vhost.c | 131

Changes in v2: - Increase/Decrease inflight requests in vhost_scsi_{allocate,free}_cmd and tcm_vhost_{allocate,free}_evt Asias He (3): tcm_vhost: Wait for pending requests in vhost_scsi_flush() tcm_vhost: Wait for pending requests in vhost_scsi_clear_endpoint() tcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq drivers/vhost/tcm_vhost.c | 131

Asias He (5): vhost-scsi: Remove unnecessary forward struct vhost_scsi declaration vhost-scsi: Rename struct vhost_scsi *s to *vs vhost-scsi: Make func indention more consistent vhost-scsi: Rename struct tcm_vhost_tpg *tv_tpg to *tpg vhost-scsi: Rename struct tcm_vhost_cmd *tv_cmd to *cmd drivers/vhost/scsi.c | 469 +++++++++++++++++++++++++++------------------------ 1 file changed,

Asias He (5): vhost-scsi: Remove unnecessary forward struct vhost_scsi declaration vhost-scsi: Rename struct vhost_scsi *s to *vs vhost-scsi: Make func indention more consistent vhost-scsi: Rename struct tcm_vhost_tpg *tv_tpg to *tpg vhost-scsi: Rename struct tcm_vhost_cmd *tv_cmd to *cmd drivers/vhost/scsi.c | 469 +++++++++++++++++++++++++++------------------------ 1 file changed,

Changes in v11 - Drop change log histroy in commit log Changes in v10 - Drop comments about lun - Add Enable VIRTIO_SCSI_F_HOTPLUG to this series Changes in v9 - Drop tcm_vhost_check_feature - Add Refactor the lock nesting rule to this sereis Asias He (4): tcm_vhost: Refactor the lock nesting rule tcm_vhost: Add hotplug/hotunplug support tcm_vhost: Add ioctl to get and set events missed

Changes in v11 - Drop change log histroy in commit log Changes in v10 - Drop comments about lun - Add Enable VIRTIO_SCSI_F_HOTPLUG to this series Changes in v9 - Drop tcm_vhost_check_feature - Add Refactor the lock nesting rule to this sereis Asias He (4): tcm_vhost: Refactor the lock nesting rule tcm_vhost: Add hotplug/hotunplug support tcm_vhost: Add ioctl to get and set events missed

Asias He (2): tcm_vhost: Introduce tcm_vhost_check_feature() tcm_vhost: Add hotplug/hotunplug support drivers/vhost/tcm_vhost.c | 224 ++++++++++++++++++++++++++++++++++++++++++++-- drivers/vhost/tcm_vhost.h | 10 +++ 2 files changed, 229 insertions(+), 5 deletions(-) -- 1.8.1.4

Asias He (2): tcm_vhost: Introduce tcm_vhost_check_feature() tcm_vhost: Add hotplug/hotunplug support drivers/vhost/tcm_vhost.c | 224 ++++++++++++++++++++++++++++++++++++++++++++-- drivers/vhost/tcm_vhost.h | 10 +++ 2 files changed, 229 insertions(+), 5 deletions(-) -- 1.8.1.4

Changes in v2: - Remove code duplication in tcm_vhost_{hotplug,hotunplug} - Fix racing of vs_events_nr - Add flush fix patch to this series Asias He (6): tcm_vhost: Add missed lock in vhost_scsi_clear_endpoint() tcm_vhost: Introduce tcm_vhost_check_feature() tcm_vhost: Introduce tcm_vhost_check_endpoint() tcm_vhost: Fix vs->vs_endpoint checking in vhost_scsi_handle_vq() tcm_vhost:

Changes in v2: - Remove code duplication in tcm_vhost_{hotplug,hotunplug} - Fix racing of vs_events_nr - Add flush fix patch to this series Asias He (6): tcm_vhost: Add missed lock in vhost_scsi_clear_endpoint() tcm_vhost: Introduce tcm_vhost_check_feature() tcm_vhost: Introduce tcm_vhost_check_endpoint() tcm_vhost: Fix vs->vs_endpoint checking in vhost_scsi_handle_vq() tcm_vhost: