Re: [Qemu-devel] [PATCH v3 03/10] qcow2: Pull check_refblocks() up

["Benoît Canet" <benoit.canet@nodalink.com>]

On Fri, Aug 22, 2014 at 06:31:37PM +0200, Max Reitz wrote:
> Pull check_refblocks() before calculate_refcounts() so we can drop its
> static declaration.
> 
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> ---
>  block/qcow2-refcount.c | 102 ++++++++++++++++++++++++-------------------------
>  1 file changed, 49 insertions(+), 53 deletions(-)
> 
> diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
> index 5f0920b..2b728ef 100644
> --- a/block/qcow2-refcount.c
> +++ b/block/qcow2-refcount.c
> @@ -1496,59 +1496,6 @@ done:
>      return new_offset;
>  }
>  
> -static int check_refblocks(BlockDriverState *bs, BdrvCheckResult *res,
> -                           BdrvCheckMode fix, uint16_t **refcount_table,
> -                           int64_t *nb_clusters);
> -
> -/*
> - * Calculates an in-memory refcount table.
> - */
> -static int calculate_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
> -                               BdrvCheckMode fix, uint16_t **refcount_table,
> -                               int64_t *nb_clusters)
> -{
> -    BDRVQcowState *s = bs->opaque;
> -    int64_t i;
> -    QCowSnapshot *sn;
> -    int ret;
> -
> -    *refcount_table = g_try_new0(uint16_t, *nb_clusters);
> -    if (*nb_clusters && *refcount_table == NULL) {
> -        res->check_errors++;
> -        return -ENOMEM;
> -    }
> -
> -    /* header */
> -    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
> -        0, s->cluster_size);
> -
> -    /* current L1 table */
> -    ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
> -                             s->l1_table_offset, s->l1_size, CHECK_FRAG_INFO);
> -    if (ret < 0) {
> -        return ret;
> -    }
> -
> -    /* snapshots */
> -    for (i = 0; i < s->nb_snapshots; i++) {
> -        sn = s->snapshots + i;
> -        ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
> -            sn->l1_table_offset, sn->l1_size, 0);
> -        if (ret < 0) {
> -            return ret;
> -        }
> -    }
> -    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
> -        s->snapshots_offset, s->snapshots_size);
> -
> -    /* refcount data */
> -    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
> -        s->refcount_table_offset,
> -        s->refcount_table_size * sizeof(uint64_t));
> -
> -    return check_refblocks(bs, res, fix, refcount_table, nb_clusters);
> -}
> -
>  /*
>   * Checks consistency of refblocks and accounts for each refblock in
>   * *refcount_table.
> @@ -1626,6 +1573,55 @@ static int check_refblocks(BlockDriverState *bs, BdrvCheckResult *res,
>  }
>  
>  /*
> + * Calculates an in-memory refcount table.
> + */
> +static int calculate_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
> +                               BdrvCheckMode fix, uint16_t **refcount_table,
> +                               int64_t *nb_clusters)
> +{
> +    BDRVQcowState *s = bs->opaque;
> +    int64_t i;
> +    QCowSnapshot *sn;
> +    int ret;
> +
> +    *refcount_table = g_try_new0(uint16_t, *nb_clusters);
> +    if (*nb_clusters && *refcount_table == NULL) {
> +        res->check_errors++;
> +        return -ENOMEM;
> +    }
> +
> +    /* header */
> +    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
> +        0, s->cluster_size);
> +
> +    /* current L1 table */
> +    ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
> +                             s->l1_table_offset, s->l1_size, CHECK_FRAG_INFO);
> +    if (ret < 0) {
> +        return ret;
> +    }
> +
> +    /* snapshots */
> +    for (i = 0; i < s->nb_snapshots; i++) {
> +        sn = s->snapshots + i;
> +        ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
> +            sn->l1_table_offset, sn->l1_size, 0);
> +        if (ret < 0) {
> +            return ret;
> +        }
> +    }
> +    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
> +        s->snapshots_offset, s->snapshots_size);
> +
> +    /* refcount data */
> +    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
> +        s->refcount_table_offset,
> +        s->refcount_table_size * sizeof(uint64_t));
> +
> +    return check_refblocks(bs, res, fix, refcount_table, nb_clusters);
> +}
> +
> +/*
>   * Compares the actual reference count for each cluster in the image against the
>   * refcount as reported by the refcount structures on-disk.
>   */
> -- 
> 2.0.4
> 

Reviewed-by: Benoît Canet <benoit.canet@nodalink.com>