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Re: [Qemu-devel] [PATCH v2] vmdk: Use bdrv_nb_sectors() where sectors, n
From: |
Benoît Canet |
Subject: |
Re: [Qemu-devel] [PATCH v2] vmdk: Use bdrv_nb_sectors() where sectors, not bytes are wanted |
Date: |
Thu, 21 Aug 2014 19:38:16 +0200 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
The Thursday 21 Aug 2014 à 14:36:19 (+0200), Markus Armbruster wrote :
> Instead of bdrv_getlength().
>
> Commit 57322b7 did this all over block, but one more bdrv_getlength()
> has crept in since.
>
> Signed-off-by: Markus Armbruster <address@hidden>
> ---
> v2: Actually use bdrv_nb_sectors() as advertized [Fam]
> Passes ./check -T -vmdk -g quick
>
> block/vmdk.c | 11 +++++------
> 1 file changed, 5 insertions(+), 6 deletions(-)
>
> diff --git a/block/vmdk.c b/block/vmdk.c
> index 01412a8..6ca8684 100644
> --- a/block/vmdk.c
> +++ b/block/vmdk.c
> @@ -397,7 +397,7 @@ static int vmdk_add_extent(BlockDriverState *bs,
> {
> VmdkExtent *extent;
> BDRVVmdkState *s = bs->opaque;
> - int64_t length;
> + int64_t nb_sectors;
>
> if (cluster_sectors > 0x200000) {
> /* 0x200000 * 512Bytes = 1GB for one cluster is unrealistic */
> @@ -413,9 +413,9 @@ static int vmdk_add_extent(BlockDriverState *bs,
> return -EFBIG;
> }
>
> - length = bdrv_getlength(file);
> - if (length < 0) {
> - return length;
> + nb_sectors = bdrv_nb_sectors(file);
> + if (nb_sectors < 0) {
> + return nb_sectors;
> }
>
> s->extents = g_realloc(s->extents,
> @@ -433,8 +433,7 @@ static int vmdk_add_extent(BlockDriverState *bs,
> extent->l1_entry_sectors = l2_size * cluster_sectors;
> extent->l2_size = l2_size;
> extent->cluster_sectors = flat ? sectors : cluster_sectors;
> - extent->next_cluster_sector =
> - ROUND_UP(DIV_ROUND_UP(length, BDRV_SECTOR_SIZE), cluster_sectors);
> + extent->next_cluster_sector = ROUND_UP(nb_sectors, cluster_sectors);
>
> if (s->num_extents > 1) {
> extent->end_sector = (*(extent - 1)).end_sector + extent->sectors;
> --
> 1.9.3
>
>
Reviewed-by: Benoît Canet <address@hidden>