[PULL 23/36] scsi: account unmap operations

[Max Reitz <mreitz@redhat.com>]

From: Anton Nefedov <anton.nefedov@virtuozzo.com>

Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20190923121737.83281-8-anton.nefedov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 hw/scsi/scsi-disk.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index a002fdabe8..68b1675fd9 100644
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -1617,10 +1617,16 @@ static void scsi_unmap_complete_noio(UnmapCBData *data, int ret)
         r->sector_count = (ldl_be_p(&data->inbuf[8]) & 0xffffffffULL)
             * (s->qdev.blocksize / BDRV_SECTOR_SIZE);
         if (!check_lba_range(s, r->sector, r->sector_count)) {
+            block_acct_invalid(blk_get_stats(s->qdev.conf.blk),
+                               BLOCK_ACCT_UNMAP);
             scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
             goto done;
         }
 
+        block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,
+                         r->sector_count * BDRV_SECTOR_SIZE,
+                         BLOCK_ACCT_UNMAP);
+
         r->req.aiocb = blk_aio_pdiscard(s->qdev.conf.blk,
                                         r->sector * BDRV_SECTOR_SIZE,
                                         r->sector_count * BDRV_SECTOR_SIZE,
@@ -1647,10 +1653,11 @@ static void scsi_unmap_complete(void *opaque, int ret)
     r->req.aiocb = NULL;
 
     aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
-    if (scsi_disk_req_check_error(r, ret, false)) {
+    if (scsi_disk_req_check_error(r, ret, true)) {
         scsi_req_unref(&r->req);
         g_free(data);
     } else {
+        block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
         scsi_unmap_complete_noio(data, ret);
     }
     aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
@@ -1682,6 +1689,7 @@ static void scsi_disk_emulate_unmap(SCSIDiskReq *r, uint8_t *inbuf)
     }
 
     if (blk_is_read_only(s->qdev.conf.blk)) {
+        block_acct_invalid(blk_get_stats(s->qdev.conf.blk), BLOCK_ACCT_UNMAP);
         scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
         return;
     }
@@ -1697,10 +1705,12 @@ static void scsi_disk_emulate_unmap(SCSIDiskReq *r, uint8_t *inbuf)
     return;
 
 invalid_param_len:
+    block_acct_invalid(blk_get_stats(s->qdev.conf.blk), BLOCK_ACCT_UNMAP);
     scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
     return;
 
 invalid_field:
+    block_acct_invalid(blk_get_stats(s->qdev.conf.blk), BLOCK_ACCT_UNMAP);
     scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
 }
 
-- 
2.21.0