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block: use int64_t instead of uint64_t in copy_range driver handlers 

We are generally moving to int64_t for both offset and bytes parameters
on all io paths.

Main motivation is realization of 64-bit write_zeroes operation for
fast zeroing large disk chunks, up to the whole disk.

We chose signed type, to be consistent with off_t (which is signed) and
with possibility for signed return type (where negative value means
error).

So, convert driver copy_range handlers parameters which are already
64bit to signed type.

Now let's consider all callers. Simple

  git grep '\->bdrv_co_copy_range'

shows the only caller:

  bdrv_co_copy_range_internal(), which does bdrv_check_request32(),
  so everything is OK.

Still, the functions may be called directly, not only by drv->...
Let's check:

git grep '\.bdrv_co_copy_range_\(from\|to\)\s*=' | \
awk '{print $4}' | sed 's/,//' | sed 's/&//' | sort | uniq | \
while read func; do git grep "$func(" | \
grep -v "$func(BlockDriverState"; done

shows no more callers. So, we are done.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210903102807.27127-6-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2021-09-03 13:28:01 +03:00 committed by Eric Blake
parent e75abedab7
commit 485350497b
5 changed files with 31 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
block/file-posix.c
View File

@ -3203,8 +3203,8 @@ static void raw_abort_perm_update(BlockDriverState *bs)
}
static int coroutine_fn raw_co_copy_range_from(
BlockDriverState *bs, BdrvChild *src, uint64_t src_offset,
BdrvChild *dst, uint64_t dst_offset, uint64_t bytes,
BlockDriverState *bs, BdrvChild *src, int64_t src_offset,
BdrvChild *dst, int64_t dst_offset, int64_t bytes,
BdrvRequestFlags read_flags, BdrvRequestFlags write_flags)
{
return bdrv_co_copy_range_to(src, src_offset, dst, dst_offset, bytes,
@ -3213,10 +3213,10 @@ static int coroutine_fn raw_co_copy_range_from(
static int coroutine_fn raw_co_copy_range_to(BlockDriverState *bs,
BdrvChild *src,
uint64_t src_offset,
int64_t src_offset,
BdrvChild *dst,
uint64_t dst_offset,
uint64_t bytes,
int64_t dst_offset,
int64_t bytes,
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{

12
block/iscsi.c
View File

@ -2169,10 +2169,10 @@ static void coroutine_fn iscsi_co_invalidate_cache(BlockDriverState *bs,
static int coroutine_fn iscsi_co_copy_range_from(BlockDriverState *bs,
BdrvChild *src,
uint64_t src_offset,
int64_t src_offset,
BdrvChild *dst,
uint64_t dst_offset,
uint64_t bytes,
int64_t dst_offset,
int64_t bytes,
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{
@ -2310,10 +2310,10 @@ static void iscsi_xcopy_data(struct iscsi_data *data,
static int coroutine_fn iscsi_co_copy_range_to(BlockDriverState *bs,
BdrvChild *src,
uint64_t src_offset,
int64_t src_offset,
BdrvChild *dst,
uint64_t dst_offset,
uint64_t bytes,
int64_t dst_offset,
int64_t bytes,
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{

12
block/qcow2.c
View File

@ -4026,9 +4026,9 @@ static coroutine_fn int qcow2_co_pdiscard(BlockDriverState *bs,
static int coroutine_fn
qcow2_co_copy_range_from(BlockDriverState *bs,
BdrvChild *src, uint64_t src_offset,
BdrvChild *dst, uint64_t dst_offset,
uint64_t bytes, BdrvRequestFlags read_flags,
BdrvChild *src, int64_t src_offset,
BdrvChild *dst, int64_t dst_offset,
int64_t bytes, BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{
BDRVQcow2State *s = bs->opaque;
@ -4109,9 +4109,9 @@ out:
static int coroutine_fn
qcow2_co_copy_range_to(BlockDriverState *bs,
BdrvChild *src, uint64_t src_offset,
BdrvChild *dst, uint64_t dst_offset,
uint64_t bytes, BdrvRequestFlags read_flags,
BdrvChild *src, int64_t src_offset,
BdrvChild *dst, int64_t dst_offset,
int64_t bytes, BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{
BDRVQcow2State *s = bs->opaque;

16
block/raw-format.c
View File

@ -532,16 +532,16 @@ static int raw_probe_geometry(BlockDriverState *bs, HDGeometry *geo)
static int coroutine_fn raw_co_copy_range_from(BlockDriverState *bs,
BdrvChild *src,
uint64_t src_offset,
int64_t src_offset,
BdrvChild *dst,
uint64_t dst_offset,
uint64_t bytes,
int64_t dst_offset,
int64_t bytes,
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{
int ret;
ret = raw_adjust_offset(bs, (int64_t *)&src_offset, bytes, false);
ret = raw_adjust_offset(bs, &src_offset, bytes, false);
if (ret) {
return ret;
}
@ -551,16 +551,16 @@ static int coroutine_fn raw_co_copy_range_from(BlockDriverState *bs,
static int coroutine_fn raw_co_copy_range_to(BlockDriverState *bs,
BdrvChild *src,
uint64_t src_offset,
int64_t src_offset,
BdrvChild *dst,
uint64_t dst_offset,
uint64_t bytes,
int64_t dst_offset,
int64_t bytes,
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{
int ret;
ret = raw_adjust_offset(bs, (int64_t *)&dst_offset, bytes, true);
ret = raw_adjust_offset(bs, &dst_offset, bytes, true);
if (ret) {
return ret;
}

12
include/block/block_int.h
View File

@ -314,10 +314,10 @@ struct BlockDriver {
*/
int coroutine_fn (*bdrv_co_copy_range_from)(BlockDriverState *bs,
BdrvChild *src,
uint64_t offset,
int64_t offset,
BdrvChild *dst,
uint64_t dst_offset,
uint64_t bytes,
int64_t dst_offset,
int64_t bytes,
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags);
@ -331,10 +331,10 @@ struct BlockDriver {
*/
int coroutine_fn (*bdrv_co_copy_range_to)(BlockDriverState *bs,
BdrvChild *src,
uint64_t src_offset,
int64_t src_offset,
BdrvChild *dst,
uint64_t dst_offset,
uint64_t bytes,
int64_t dst_offset,
int64_t bytes,
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags);