| Message ID | 20230915184130.403366-20-den@openvz.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | implement discard operation for Parallels images | expand |
On 9/15/23 20:41, Denis V. Lunev wrote: > Replace 'space' representing the amount of data to preallocate with > 'bytes'. > > Rationale: > * 'space' at each place is converted to bytes > * the unit is more close to the variable name > > Signed-off-by: Denis V. Lunev <den@openvz.org> > --- > block/parallels.c | 13 +++++-------- > 1 file changed, 5 insertions(+), 8 deletions(-) > > diff --git a/block/parallels.c b/block/parallels.c > index 2efa578e21..76aedfd7c4 100644 > --- a/block/parallels.c > +++ b/block/parallels.c > @@ -279,7 +279,8 @@ allocate_clusters(BlockDriverState *bs, int64_t sector_num, > first_free = find_first_zero_bit(s->used_bmap, s->used_bmap_size); > if (first_free == s->used_bmap_size) { > uint32_t new_usedsize; > - int64_t space = to_allocate * s->tracks + s->prealloc_size; > + int64_t bytes = to_allocate * s->cluster_size; > + bytes += s->prealloc_size * BDRV_SECTOR_SIZE; > > host_off = s->data_end * BDRV_SECTOR_SIZE; > > @@ -289,8 +290,7 @@ allocate_clusters(BlockDriverState *bs, int64_t sector_num, > * force the safer-but-slower fallocate. > */ > if (s->prealloc_mode == PRL_PREALLOC_MODE_TRUNCATE) { > - ret = bdrv_co_truncate(bs->file, > - (s->data_end + space) << BDRV_SECTOR_BITS, > + ret = bdrv_co_truncate(bs->file, host_off + bytes, > false, PREALLOC_MODE_OFF, > BDRV_REQ_ZERO_WRITE, NULL); > if (ret == -ENOTSUP) { > @@ -298,16 +298,13 @@ allocate_clusters(BlockDriverState *bs, int64_t sector_num, > } > } > if (s->prealloc_mode == PRL_PREALLOC_MODE_FALLOCATE) { > - ret = bdrv_co_pwrite_zeroes(bs->file, > - s->data_end << BDRV_SECTOR_BITS, > - space << BDRV_SECTOR_BITS, 0); > + ret = bdrv_co_pwrite_zeroes(bs->file, host_off, bytes, 0); > } > if (ret < 0) { > return ret; > } > > - new_usedsize = s->used_bmap_size + > - (space << BDRV_SECTOR_BITS) / s->cluster_size; > + new_usedsize = s->used_bmap_size + bytes / s->cluster_size; > s->used_bmap = bitmap_zero_extend(s->used_bmap, s->used_bmap_size, > new_usedsize); > s->used_bmap_size = new_usedsize; Reviewed-by: Alexander Ivanov <alexander.ivanov@virtuozzo.com>
diff --git a/block/parallels.c b/block/parallels.c index 2efa578e21..76aedfd7c4 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -279,7 +279,8 @@ allocate_clusters(BlockDriverState *bs, int64_t sector_num, first_free = find_first_zero_bit(s->used_bmap, s->used_bmap_size); if (first_free == s->used_bmap_size) { uint32_t new_usedsize; - int64_t space = to_allocate * s->tracks + s->prealloc_size; + int64_t bytes = to_allocate * s->cluster_size; + bytes += s->prealloc_size * BDRV_SECTOR_SIZE; host_off = s->data_end * BDRV_SECTOR_SIZE; @@ -289,8 +290,7 @@ allocate_clusters(BlockDriverState *bs, int64_t sector_num, * force the safer-but-slower fallocate. */ if (s->prealloc_mode == PRL_PREALLOC_MODE_TRUNCATE) { - ret = bdrv_co_truncate(bs->file, - (s->data_end + space) << BDRV_SECTOR_BITS, + ret = bdrv_co_truncate(bs->file, host_off + bytes, false, PREALLOC_MODE_OFF, BDRV_REQ_ZERO_WRITE, NULL); if (ret == -ENOTSUP) { @@ -298,16 +298,13 @@ allocate_clusters(BlockDriverState *bs, int64_t sector_num, } } if (s->prealloc_mode == PRL_PREALLOC_MODE_FALLOCATE) { - ret = bdrv_co_pwrite_zeroes(bs->file, - s->data_end << BDRV_SECTOR_BITS, - space << BDRV_SECTOR_BITS, 0); + ret = bdrv_co_pwrite_zeroes(bs->file, host_off, bytes, 0); } if (ret < 0) { return ret; } - new_usedsize = s->used_bmap_size + - (space << BDRV_SECTOR_BITS) / s->cluster_size; + new_usedsize = s->used_bmap_size + bytes / s->cluster_size; s->used_bmap = bitmap_zero_extend(s->used_bmap, s->used_bmap_size, new_usedsize); s->used_bmap_size = new_usedsize;
Replace 'space' representing the amount of data to preallocate with 'bytes'. Rationale: * 'space' at each place is converted to bytes * the unit is more close to the variable name Signed-off-by: Denis V. Lunev <den@openvz.org> --- block/parallels.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-)