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block: Use bdrv_nb_sectors() where sectors, not bytes are wanted

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Instead of bdrv_getlength().

Aside: a few of these callers don't handle errors.  I didn't
investigate whether they should.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Markus Armbruster 2014-06-26 13:23:22 +02:00 committed by Kevin Wolf
parent 43716fa805
commit 57322b7811
4 changed files with 8 additions and 11 deletions
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9
block-migration.c
View file

@ -186,7 +186,7 @@ static int bmds_aio_inflight(BlkMigDevState *bmds, int64_t sector)
{
int64_t chunk = sector / (int64_t)BDRV_SECTORS_PER_DIRTY_CHUNK;
if ((sector << BDRV_SECTOR_BITS) < bdrv_getlength(bmds->bs)) {
if (sector < bdrv_nb_sectors(bmds->bs)) {
return !!(bmds->aio_bitmap[chunk / (sizeof(unsigned long) * 8)] &
(1UL << (chunk % (sizeof(unsigned long) * 8))));
} else {
@ -223,8 +223,7 @@ static void alloc_aio_bitmap(BlkMigDevState *bmds)
BlockDriverState *bs = bmds->bs;
int64_t bitmap_size;
bitmap_size = (bdrv_getlength(bs) >> BDRV_SECTOR_BITS) +
BDRV_SECTORS_PER_DIRTY_CHUNK * 8 - 1;
bitmap_size = bdrv_nb_sectors(bs) + BDRV_SECTORS_PER_DIRTY_CHUNK * 8 - 1;
bitmap_size /= BDRV_SECTORS_PER_DIRTY_CHUNK * 8;
bmds->aio_bitmap = g_malloc0(bitmap_size);
@ -350,7 +349,7 @@ static void init_blk_migration_it(void *opaque, BlockDriverState *bs)
int64_t sectors;
if (!bdrv_is_read_only(bs)) {
sectors = bdrv_getlength(bs) >> BDRV_SECTOR_BITS;
sectors = bdrv_nb_sectors(bs);
if (sectors <= 0) {
return;
}
@ -799,7 +798,7 @@ static int block_load(QEMUFile *f, void *opaque, int version_id)
if (bs != bs_prev) {
bs_prev = bs;
total_sectors = bdrv_getlength(bs) >> BDRV_SECTOR_BITS;
total_sectors = bdrv_nb_sectors(bs);
if (total_sectors <= 0) {
error_report("Error getting length of block device %s",
device_name);

3
block.c
View file

@ -5283,13 +5283,12 @@ BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs, int granularity,
granularity >>= BDRV_SECTOR_BITS;
assert(granularity);
bitmap_size = bdrv_getlength(bs);
bitmap_size = bdrv_nb_sectors(bs);
if (bitmap_size < 0) {
error_setg_errno(errp, -bitmap_size, "could not get length of device");
errno = -bitmap_size;
return NULL;
}
bitmap_size >>= BDRV_SECTOR_BITS;
bitmap = g_malloc0(sizeof(BdrvDirtyBitmap));
bitmap->bitmap = hbitmap_alloc(bitmap_size, ffs(granularity) - 1);
QLIST_INSERT_HEAD(&bs->dirty_bitmaps, bitmap, list);

2
block/qcow2.c
View file

@ -1557,7 +1557,7 @@ static int preallocate(BlockDriverState *bs)
int ret;
QCowL2Meta *meta;
nb_sectors = bdrv_getlength(bs) >> BDRV_SECTOR_BITS;
nb_sectors = bdrv_nb_sectors(bs);
offset = 0;
while (nb_sectors) {

5
block/vmdk.c
View file

@ -669,8 +669,7 @@ static int vmdk_open_vmdk4(BlockDriverState *bs,
if (le32_to_cpu(header.flags) & VMDK4_FLAG_RGD) {
l1_backup_offset = le64_to_cpu(header.rgd_offset) << 9;
}
if (bdrv_getlength(file) <
le64_to_cpu(header.grain_offset) * BDRV_SECTOR_SIZE) {
if (bdrv_nb_sectors(file) < le64_to_cpu(header.grain_offset)) {
error_setg(errp, "File truncated, expecting at least %" PRId64 " bytes",
(int64_t)(le64_to_cpu(header.grain_offset)
* BDRV_SECTOR_SIZE));
@ -1999,7 +1998,7 @@ static int vmdk_check(BlockDriverState *bs, BdrvCheckResult *result,
BDRVVmdkState *s = bs->opaque;
VmdkExtent *extent = NULL;
int64_t sector_num = 0;
int64_t total_sectors = bdrv_getlength(bs) / BDRV_SECTOR_SIZE;
int64_t total_sectors = bdrv_nb_sectors(bs);
int ret;
uint64_t cluster_offset;