diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/iscsi.c | 59 |
1 files changed, 30 insertions, 29 deletions
diff --git a/block/iscsi.c b/block/iscsi.c index 7b09795..4828b83 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -83,12 +83,20 @@ iscsi_bh_cb(void *p) acb->common.cb(acb->common.opaque, acb->status); } + if (acb->task != NULL) { + scsi_free_scsi_task(acb->task); + acb->task = NULL; + } + qemu_aio_release(acb); } static void iscsi_schedule_bh(IscsiAIOCB *acb) { + if (acb->bh) { + return; + } acb->bh = qemu_bh_new(iscsi_bh_cb, acb); qemu_bh_schedule(acb->bh); } @@ -98,6 +106,10 @@ static void iscsi_abort_task_cb(struct iscsi_context *iscsi, int status, void *command_data, void *private_data) { + IscsiAIOCB *acb = private_data; + + acb->status = -ECANCELED; + iscsi_schedule_bh(acb); } static void @@ -106,15 +118,19 @@ iscsi_aio_cancel(BlockDriverAIOCB *blockacb) IscsiAIOCB *acb = (IscsiAIOCB *)blockacb; IscsiLun *iscsilun = acb->iscsilun; - acb->common.cb(acb->common.opaque, -ECANCELED); + if (acb->status != -EINPROGRESS) { + return; + } + acb->canceled = 1; /* send a task mgmt call to the target to cancel the task on the target */ iscsi_task_mgmt_abort_task_async(iscsilun->iscsi, acb->task, - iscsi_abort_task_cb, NULL); + iscsi_abort_task_cb, acb); - /* then also cancel the task locally in libiscsi */ - iscsi_scsi_task_cancel(iscsilun->iscsi, acb->task); + while (acb->status == -EINPROGRESS) { + qemu_aio_wait(); + } } static AIOPool iscsi_aio_pool = { @@ -192,9 +208,6 @@ iscsi_aio_write16_cb(struct iscsi_context *iscsi, int status, g_free(acb->buf); if (acb->canceled != 0) { - qemu_aio_release(acb); - scsi_free_scsi_task(acb->task); - acb->task = NULL; return; } @@ -206,8 +219,6 @@ iscsi_aio_write16_cb(struct iscsi_context *iscsi, int status, } iscsi_schedule_bh(acb); - scsi_free_scsi_task(acb->task); - acb->task = NULL; } static int64_t sector_qemu2lun(int64_t sector, IscsiLun *iscsilun) @@ -236,6 +247,8 @@ iscsi_aio_writev(BlockDriverState *bs, int64_t sector_num, acb->qiov = qiov; acb->canceled = 0; + acb->bh = NULL; + acb->status = -EINPROGRESS; /* XXX we should pass the iovec to write16 to avoid the extra copy */ /* this will allow us to get rid of 'buf' completely */ @@ -293,9 +306,6 @@ iscsi_aio_read16_cb(struct iscsi_context *iscsi, int status, trace_iscsi_aio_read16_cb(iscsi, status, acb, acb->canceled); if (acb->canceled != 0) { - qemu_aio_release(acb); - scsi_free_scsi_task(acb->task); - acb->task = NULL; return; } @@ -307,8 +317,6 @@ iscsi_aio_read16_cb(struct iscsi_context *iscsi, int status, } iscsi_schedule_bh(acb); - scsi_free_scsi_task(acb->task); - acb->task = NULL; } static BlockDriverAIOCB * @@ -334,6 +342,8 @@ iscsi_aio_readv(BlockDriverState *bs, int64_t sector_num, acb->qiov = qiov; acb->canceled = 0; + acb->bh = NULL; + acb->status = -EINPROGRESS; acb->read_size = qemu_read_size; acb->buf = NULL; @@ -409,9 +419,6 @@ iscsi_synccache10_cb(struct iscsi_context *iscsi, int status, IscsiAIOCB *acb = opaque; if (acb->canceled != 0) { - qemu_aio_release(acb); - scsi_free_scsi_task(acb->task); - acb->task = NULL; return; } @@ -423,8 +430,6 @@ iscsi_synccache10_cb(struct iscsi_context *iscsi, int status, } iscsi_schedule_bh(acb); - scsi_free_scsi_task(acb->task); - acb->task = NULL; } static BlockDriverAIOCB * @@ -439,6 +444,8 @@ iscsi_aio_flush(BlockDriverState *bs, acb->iscsilun = iscsilun; acb->canceled = 0; + acb->bh = NULL; + acb->status = -EINPROGRESS; acb->task = iscsi_synchronizecache10_task(iscsi, iscsilun->lun, 0, 0, 0, 0, @@ -463,9 +470,6 @@ iscsi_unmap_cb(struct iscsi_context *iscsi, int status, IscsiAIOCB *acb = opaque; if (acb->canceled != 0) { - qemu_aio_release(acb); - scsi_free_scsi_task(acb->task); - acb->task = NULL; return; } @@ -477,8 +481,6 @@ iscsi_unmap_cb(struct iscsi_context *iscsi, int status, } iscsi_schedule_bh(acb); - scsi_free_scsi_task(acb->task); - acb->task = NULL; } static BlockDriverAIOCB * @@ -495,6 +497,8 @@ iscsi_aio_discard(BlockDriverState *bs, acb->iscsilun = iscsilun; acb->canceled = 0; + acb->bh = NULL; + acb->status = -EINPROGRESS; list[0].lba = sector_qemu2lun(sector_num, iscsilun); list[0].num = nb_sectors * BDRV_SECTOR_SIZE / iscsilun->block_size; @@ -523,9 +527,6 @@ iscsi_aio_ioctl_cb(struct iscsi_context *iscsi, int status, IscsiAIOCB *acb = opaque; if (acb->canceled != 0) { - qemu_aio_release(acb); - scsi_free_scsi_task(acb->task); - acb->task = NULL; return; } @@ -554,8 +555,6 @@ iscsi_aio_ioctl_cb(struct iscsi_context *iscsi, int status, } iscsi_schedule_bh(acb); - scsi_free_scsi_task(acb->task); - acb->task = NULL; } static BlockDriverAIOCB *iscsi_aio_ioctl(BlockDriverState *bs, @@ -573,6 +572,8 @@ static BlockDriverAIOCB *iscsi_aio_ioctl(BlockDriverState *bs, acb->iscsilun = iscsilun; acb->canceled = 0; + acb->bh = NULL; + acb->status = -EINPROGRESS; acb->buf = NULL; acb->ioh = buf; |