Re: [Qemu-devel] [PATCH v8 4/9] ide: account UNMAP (TRIM) operations

[Max Reitz <mreitz@redhat.com>]

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On 16.05.19 16:33, Anton Nefedov wrote:
> Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---
>  hw/ide/core.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/hw/ide/core.c b/hw/ide/core.c
> index 6afadf894f..3a7ac93777 100644
> --- a/hw/ide/core.c
> +++ b/hw/ide/core.c
> @@ -441,6 +441,14 @@ static void ide_issue_trim_cb(void *opaque, int ret)
>      TrimAIOCB *iocb = opaque;
>      IDEState *s = iocb->s;
>  
> +    if (iocb->i >= 0) {
> +        if (ret >= 0) {
> +            block_acct_done(blk_get_stats(s->blk), &s->acct);
> +        } else {
> +            block_acct_failed(blk_get_stats(s->blk), &s->acct);

Hmm, in other places (ide_handle_rw_error() here or
scsi_handle_rw_error() in scsi-disk) only report this with
BLOCK_ERROR_ACTION_REPORT.

So I’m wondering whether the same should be done here.

Max

> +        }
> +    }
> +
>      if (ret >= 0) {
>          while (iocb->j < iocb->qiov->niov) {
>              int j = iocb->j;
> @@ -458,10 +466,14 @@ static void ide_issue_trim_cb(void *opaque, int ret)
>                  }
>  
>                  if (!ide_sect_range_ok(s, sector, count)) {
> +                    block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_UNMAP);
>                      iocb->ret = -EINVAL;
>                      goto done;
>                  }
>  
> +                block_acct_start(blk_get_stats(s->blk), &s->acct,
> +                                 count << BDRV_SECTOR_BITS, BLOCK_ACCT_UNMAP);
> +
>                  /* Got an entry! Submit and exit.  */
>                  iocb->aiocb = blk_aio_pdiscard(s->blk,
>                                                 sector << BDRV_SECTOR_BITS,
> 



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